SCTLK40-400-SCTLQ40-355_753944-768681e_Rev01

RENK WERK HANNOVER

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Instruction Manual (Translation)

Bearing SCTLK 40 - 400 SCTLQ 40 - 400

SCTLK 40 - 400 SCTLQ 40 - 400

Table of Contents

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11 .. PP rr ee ll ii mm ii nnaa rr yy NN oottee ss .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 66

1.1 . In t roduc t ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.2 . Descr ip t ion o f the used s igns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.3 . Safe ty ins t ruc t ions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

22 .. PP rr oodd uucc tt DDee ss cc rr ii pp tt ii oonn .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 11 11

2.1 . In t roduc t ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.2 . Coding o f the bear ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.3 . Descr ip t ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

33 .. OO vvee rr vv ii ee ww DDrr aa ww ii nnggss .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 11 44

3.1 . In t roduc t ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.2 . Bear ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.2.1. Designation of the parts and connections .......................................... 15

3.3 . She l l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.4 . Oi l r i ngs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.4.1. Fixed oil rings ..................................................................................... 17 3.4.2. Loose oil ring ...................................................................................... 18

3.5 . Sea l ing s ys tem s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.5.1. Rigid seal (Type 20) ........................................................................... 19

44 .. TTrr aa nnss ppoo rr tt // SS ttoo rr aa gg ee .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 22 00

4.1 . In t roduc t ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.2 . Transpor t and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.2.1. Weights .............................................................................................. 20 4.2.2. Transport of a slide bearing ............................................................... 20 4.2.3. Transport of an unit with mounted slide bearings .............................. 21 4.2.4. Eye bolts ............................................................................................ 22

4.3 . Cor ros ion pro tec t ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.3.1. Storage ............................................................................................... 22 4.3.1.1 Corrosion protection of mounted bearings ......................................... 23 4.3.1.2 In case the standstill period is longer than 1/2 year: .......................... 23 4.3.1.3 In case the standstill period lasts more years: ................................... 23 4.3.2. Hints to the corrosion preservative .................................................... 23 4.3.2.1 Coating the metallic surfaces ............................................................. 24 4.3.2.2 Removal of the protection film ........................................................... 24

55 .. MMoo uunn tt ii nngg // TTaa kk ii nngg ii nn ttoo OO rr ddee rr .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 22 55

5.1 . Too ls and equ ipm ent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5.2 . Prepara tor y work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 5.3 . Inser t ing the shaf t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 5.4 . Pre-a l ignm ent o f the hous ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.4.1. Alignment of the bearing .................................................................... 28 5.4.2. Cooler connection .............................................................................. 29

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5.4.2.1 Taking into order ................................................................................ 30 5.4.3. Lubricant filling ................................................................................... 31 5.4.3.1 Flushing the bearing........................................................................... 31 5.4.4. Further procedures............................................................................. 32 5.4.4.1 Connection of electrical instruments .................................................. 32

5.5 . Star t ing opera t ion a f te r s tands t i l l . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.6 . Star t ing opera t ion a f te r a d isassem bly o f the bear ing33 5.7 . Cont ro ls dur ing f i r s t opera t ion / tes t run . . . . . . . . . . . . . . . . . . 34 5.8 . Abnorm al tem pera tures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

66 .. CCaa rr ee aa nndd MMaa ii nn ttee nn aa nncc ee .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 33 77

6.1 . In t roduc t ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 6.2 . Main tenance and care ac t i v i t ies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 6.3 . Main tenance schedu le . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 6.4 . Non-opera t ing o f the un i t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 6.5 . Lubr icant change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

6.5.1. Check of the lubricant level ................................................................ 40 6.5.2. Drain the lubricant .............................................................................. 41 6.5.3. Filling in the lubricant. ........................................................................ 42

6.6 . Selec t ion o f l ubr icants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 6.7 . L i fe cyc le . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

77 .. DDii ss mm oouu nntt ii nn gg oo ff tt hhee BBee aa rr ii nngg .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 44 55

7.1 . In t roduc t ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 7.2 . Too ls and equ ipm ent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 7.3 . Dism ount ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

7.3.1. Preparatory work ................................................................................ 46 7.3.2. Sealing system ................................................................................... 46 7.3.2.1 Rigid seal (type 20) ............................................................................ 46 7.3.3. Top of the housing ............................................................................. 47 7.3.4. Top of the shell ................................................................................... 47 7.3.4.1 Bearings with axial parts .................................................................... 47 7.3.5. Oil rings .............................................................................................. 48 7.3.5.1 Fixed oil ring ....................................................................................... 48 7.3.5.2 Loose oil rings .................................................................................... 48 7.3.6. Bottom half of the shell ...................................................................... 49 7.3.7. Cooler ................................................................................................. 50

7.4 . Clean ing o f the Bear ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

7.4.1. Cleaning the cooler ............................................................................ 52

7.5 . Cont ro l f o r wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

7.5.1. Further controls for wear .................................................................... 54 7.5.2. Cooler check ...................................................................................... 54

88 .. AAss ss ee mm bbll yy oo ff tt hhee BBee aa rr ii nngg .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 55 55

8.1 . In t roduc t ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 8.2 . Sea l ing com pounds fo r RENK bear ings . . . . . . . . . . . . . . . . . . . 55 8.3 . Assem bly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

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8.3.1. Tools and equipment.......................................................................... 56 8.3.2. General hints ...................................................................................... 56 8.3.3. Preparing the shells ........................................................................... 57 8.3.4. Bottom of the shell ............................................................................. 58 8.3.5. Oil rings .............................................................................................. 59 8.3.5.1 Loose oil rings .................................................................................... 59 8.3.5.2 Fixed oil ring ....................................................................................... 60 8.3.6. Top half of the shell ............................................................................ 60 8.3.7. Closing of the bearing ........................................................................ 61 8.3.8. Oil scraper .......................................................................................... 62 8.3.9. Rigid seal (Type 20) ........................................................................... 63 8.3.10. Cooler ................................................................................................. 65 8.3.11. Final work ........................................................................................... 65

99 .. TToorr qq uuee RRaa ttee ss .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 66 77

9.1 . Genera l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

9.1.1. Cap screws, nuts and screw nuts ...................................................... 67 9.1.2. Screw plugs and adapters ................................................................. 67 9.1.3. Connections for pipes and hoses ....................................................... 67

11 00 .. SS ppaa rr ee PP aa rr ttss OO rr ddee rr ii nn gg .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 66 88

10.1 . In t roduc t ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 10.2 . Spare par ts o rder ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

AApp pp ee nn dd ii xx .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 66 99

AA.. TTee cc hh nn ii cc aa ll DDaa ttaa .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 77 00

BB.. TT yyppee PP ll aa ttee .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 77 11

CC.. AAdd dd ii tt ii oo nnaa ll DDoocc uumm ee nnttss .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 77 22

DD.. AAdd dd ii tt ii oo nnaa ll HH ii nn ttss .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 77 33

Pre-lubrication Device ............................................................................................ 74

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Adresses

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RENK AKTIENGESELLSCHAFT Werk Hannover Weltausstel lungsallee 21 D - 30539 Hannover Phone: (0511) 8601-0 Fax: (0511) 8601-266 E-mail : [email protected] Web: ht tp:/ /www.renk.eu Al l r ights reserved. Copy or reproduct ion without pr ior permission of RENK AG, Hannover Plant prohibited.

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http://www.renk.eu/�

SCTLK 40 - 400 SCTLQ 40 - 400

1.1 Pre l iminary Notes/ In t roduct ion

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1. Preliminary Notes

1.1. Introduction

The present operat ion inst ruct ions conta in informat ion on insta l la t ion, s tar t -up, care and maintenance as wel l as or -ders for spare parts.

The informat ion of th is inst ruct ion manual is addressed to qual i f ied technical personnel ( f i t ters, mechanic insta l lers , mechanic eng ineers) .

Make sure the safety instructions given in this documen-tat ion are careful ly observed.

General notes on safety are l is ted in th is f i rst chapter .

Specia l inst ruct ions are g iven at the beg inning of the indi -v idua l chapter.

Safety inst ruct ions refer r ing to act ions are g iven before the act ion i tse lf is descr ibed.

Page numbers are shown at the outer bot tom marg in. For example, 1/74 means: page 1, the operat ing instruct ion has 74 pages.

1.2. Description of the used signs

The fo l lowing indicat ions should be observed when reading these inst ruct ions.

Instruct ion fo l lows

Beg inning of an enumerat ion

( ) Par t number . The i tem numbers cor respond to the parts l ists and drawings sent together wi th th is documentat ion

SC… Instruct ions or recommendat ions refer r ing to a s ing le bear-ing type or s ize.

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1.3 Pre l iminary Notes/ Safety inst ruct ions

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1.3. Safety instructions

Sl ide bear ings of the RENK AG are used intended i f axia l and/ or radia l forces of rotat ing machine e lements or shaf t l ines are led sure at acceptable temperatures in to the foun-dat ion.

Use bear ings of the RENK AG a lways in tended accord-ing to the regulat ions and operat ing condi t ions.

Safety inst ruct ions are marked as fo l lows:

Bear ings type “SC” are to be incorporated in a machine or to be combined wi th other machines to make a complete ma-chine or a complete uni t . They must not be put in to service unt i l i t has been conf i rmed that the complete machine or complete system into which these products are to be incor-porated sat isfy the requirements of the legal regulat ions of safety, e.g . the EC Machinery Direct ive or respect ive ly the according nat ional regulat ions.

DANGER!

This symbol indicates an imminent ly hazardous si tua-t ion which, i f not avoided w il l resul t in ser ious injury or death.

WARNING!

This symbol indicates a potential ly hazardous situation which, i f not avoided can result in ser ious injury or death.

CAUTION!

This symbol indicates a potential ly hazardous situation which, i f not avoided, may result in minor or moderate injury.

NOTE!

This symbol indicates a potential ly hazardous situation which, i f not avoided, may result in property damage.

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In part icular, hazards may occur:

i f insuf f ic ient ly t ra ined personnel manipulates the prod-uct ,

i f the product is inexper t ly insta l led, operated and ser -viced,

i f the product is used for other than the in tended pur-poses.

All persons responsible for the operat ion of the plant or product must:

have def in i te ly read and understood the chapter "Notes on Safety" ,

know these Operat ing Instruct ions or at least be fami l iar wi th those parts where the respect ive act iv i ty and associ-ated dangers are descr ibed.

be fami l iar wi th shut -down procedures, e.g. "Emergen-cy-OFF", re lat ing to the ent i re p lant or to p lant i tems im-por tant to the re levant act iv i ty,

have adequate technical qual i f icat ions and be author-ized to perform the re levant act iv i ty,

know their specif ic dut ies and author i ty.

Moreover, i t is mandatory that these persons:

ref ra in f rom doing anyth ing that might cause bodi ly harm or const i tute a danger to heal th, the product or oth-er assets,

in form their super iors in charge or the operator of any modif icat ions made to the product ,

in form their super iors in charge or the operator of any changes detected in the operat ional behavior of the prod-uct , e .g. unusual running noise.

No modif icat ions to the product are permit ted unless the pr ior approval of RENK has been obtained.

The user shall undertake to:

ensure that the product and i ts surroundings are kept c lean and in good order,

operate the product only when in perfect condi t ion,

use the product exc lus ive ly for the in tended purpose,

use the product only in the f ramework of the f ix ing technical character is t ics

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safeguard rotat ing par ts by means of sui table protect ive systems,

inst ruct the personnel to wear protect ive c loth ing , to the extent deemed necessary,

d is t r ibute these operat ing inst ruct ions among the per-sonnel in charge.

Using the equipment for the in tended purpose as set out above a lso inc ludes observing the inst ruct ions g iven in th is operat ing manual .

In addi t ion to the procedures and instruct ions out - l ined in th is operat ing manual a l l general ly app l icable s tatutory and other acc ident prevent ion ru les and provis ions must be ob-served.

The warranty obl igat ions of RENK wil l become void:

i f the product is opened or modif ied wi thout our con-sent ,

in the event the inst ruct ions in th is manual are d isre-garded,

i f spare par ts and auxi l iary i tems are bui l t in or at -tached which have not been suppl ied or approved by us,

i f the product is subjected to over loads caused for ex-ample by tors ional ly v ibrat ions, torque impacts, d istor ted or deformed foundat ions or other impermiss ib le inf lu-ences,

i f the technical character is t ics specif ied are exceeded or fa l len short of ,

i f the product is improper ly handled or manipulated.

We reserve the r ight to implement technical changes for product improvement purposes.

The drawings shown in th is manual serve for explanat ion of the technical context and may be d if ferent f rom the actual des ign.

The informat ion and h ints g iven in th is manual have been revised carefu l ly. However , we exc lude any l iab i l i t y for pos-s ib le fa i lures conta ined here in.

Technical specif icat ions, measures and weights ind icated in th is manual do not guarantee for the actual proper t ies of the product .

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SCTLK 40 - 400 SCTLQ 40 - 400


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References to other products in th is manual do not ment ion poss ib le exis t ing patents, ut i l i ty patents or t rade marks re-la ted to these products. Omiss ion of such informat ion how-ever , does not mean that these products are not protected by t rademark laws or copyr ight regulat ions.

Unless otherwise s t ipu lated in the cont ract , any warranty c la ims shal l be deal t wi th in accordance wi th the “General Terms and Condit ions of Suppl ies and Services" of RENK AG appl icab le at the t ime the cont ract has been con-c luded.

Copyright:

The copyr ight on drawings, par ts l is ts , manuals etc. remains wi th us. Drawings must not be handed over or d isc losed to th i rd par t ies wi thout our consent in wr i t ing.

Any reproduct ion of drawings in whole or par ts is prohib i ted.

Cont ravent ions wi l l be prosecuted.

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2.1 Product Descr ip t ion / In t roduct ion

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2. Product Description

2.1. Introduction

This chapter g ives you an overal l v iew on the main features of the bear ing.

2.2. Coding of the bearing

Type Heat dissipation Shape of bore and type of lubrication

Thrust parts Size and Diameter

SC N

Natural cooling

C

Plain cylindrical bore without oil ring

A

elastically supported circular tilting pads (locating bearing)

17 Ø140-Ø170

20 Ø170-Ø200

25 Ø200-Ø250

T

Circulating pump and water cooling (finned tube cooler in oil sump)

F

Plain cylindrical bore with fixed oil ring

B

Plain shoulders (lo-cating bearing)

28 Ø250-Ø280

32 Ø280-Ø315

36 Ø315-Ø355

40 Ø355-Ø400

U

Circulating pump and natural cooling

L

Plain cylindrical bore with loose oil ring

E

Taper land faces for one sense of rotation (locating bearing)

45 Ø400-Ø450

56 Ø500-Ø560

63 Ø560-Ø630

W

Water cooling (finned tube cooler in oil sump)

V

Four lobe bore with-out oil ring

K

Taper land faces for both senses of rota-tion (locating bearing)

71 Ø630-Ø710

80 Ø710-Ø800

90 Ø800-Ø900

X

Lubrication by oil circulation with exter-nal oil cooling when oil throughput is high

Y

Two lobe bore („lem-on bore“) without oil ring

Q

Without thrust parts (non-locating bearing)

100 Ø 900-Ø1000

112 Ø1000-Ø1120

125 Ø1120-Ø1250

140 Ø1250-Ø1400

Z

Lubrication by oil circulation with exter-nal oil cooling

K

Insulated sphere

Example: SCTLK 40 - 400:

• Pedesta l bear ing type “SC”

• wi th c i rcu lat ing pump and water cool ing

• p la in cyl indr ica l bore wi th f ixed o i l r ing

• taper land faces for both senses of rotat ion ( locat ing bear ing)

• s ize 40, d iameter 400

11/74

SCTLK 40 - 400 SCTLQ 40 - 400

2.3 Product Descr ip t ion / Descr ip t ion

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2.3. Description

RENK s l ide bear ings ser ies “SC” are the product of a most recent development based on the modular component pr inc i -p le. These modular components can be put together in a l ter-nat ive ways to sui t the specif ic requirements of each bear ing appl icat ion.

They have been specia l ly des igned to car ry radia l loads on-ly. However , smal l axia l loads can be accommodated.

The main appl icat ion f ie lds for th is type of bear ing are the e lect r ic machines, turb ines and fans.

The housing of the SC bear ing is smooth and made f rom a h igh qual i ty cast i ron. Al ternat ive mater ia ls can a lso be sup-pl ied for specia l operat ion condit ions.

The shel ls are manufactured f rom steel and have a spher ica l seat ing. They are l ined wi th RENKmetal therm89.

For normal appl icat ions SC bear ings are f i t ted wi th r ig id seals . Rig id seals have the insulat ion c lass IP 44. Other seal ing systems are avai lab le.

According to the operat ing requirements the “SC” bear ings are suppl ied wi th sel f or forced lubr icat ion.

The self lubr icat ion is mainta ined by loose or f ixed o i l r ings. Star t ing at a bear ing-specif ic speed the o i l r ings car ry lubr i -cant f rom the lubr icat ion sump to the top of the housing.

Loose o i l r ings are made of a copper-zinc a l loy. They del iver the o i l d i rect to the shaf t journal .

Al ternat ive ly, a f ixed o i l r ing and o i l scraper arrangement can be used to t ransfer o i l f rom the sump to the work ing fac-es of the shel l . In case of heavier running condi t ions a forced lubr icat ion may be necessary. RENK AG suppl ies such lubr icat ion uni ts .

To prevent problems f rom electr ica l eddy cur rents, the bear-ings type SC can be e lect r ica l ly insulated, in ternal ly.

Heat generated by the bear ing is usual ly d iss ipated sole ly by radiat ion and convect ion. W ater cool ing can a lso be used through seawater res is tant coolers submerged in the o i l sump. Integrated o i l gu ide p lates improve the ef f ic iency of these coolers.

The bear ings are prepared to insta l l res is tance sensors to moni tor the temperatures.

12/74

SCTLK 40 - 400 SCTLQ 40 - 400

2.3 Product Descr ip t ion / Descr ip t ion

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NOTE!

We recommend the use of RENK resistance thermome-ters or RENK angle thermometers with direct reading for temperature monitor ing.

The necessary viscos i ty for each operat ing condi t ion wi l l be determined by the EDP-calculat ions. These calculat ions are a lways car r ied out at the design s tage.

13/74

SCTLK 40 - 400 SCTLQ 40 - 400

3.1 Overv iew Drawings/ In t roduct ion

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3. Overview Drawings

3.1. Introduction

This chapter g ives an overv iew about the components of a s l ide bear ing type “SC”.

3.2. Bearing

NOTE!

The i tem numbers used in this manual do not correspond w ith the i tem numbers of the part l ist or main drawing.

Fig 01: Bearing

14/74

SCTLK 40 - 400 SCTLQ 40 - 400

3.2 Overv iew Drawings/ Bear ing

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Hous ings content of bot tom and top par t . The halves are manufactured together and only avai lab le as a unit .

3.2.1. Designation of the parts and connections

1 Housing, complete 5 Taper p in (sp l i t l ine) 6 Screw (sp l i t l ine) 7 Screw (sp l i t l ine) 9 Ring bol t 10 Cover 11 Screw 12 Washer 21 Oi l dra in screw 22 Oi l eye

SC.W. SC.T.

13 Cooler 15 Gasket 16 Screw 16 Washer 18 Adapter 29 Oi l gu ide p late

39 Posi t ion ing p in (up to s ize 50) 40 Shel l 41 Screw (sp l i t l ine) 42 Taper p in (sp l i t l ine) 120 Rig id seal 96 Screw ( f lange r ig id seal) 97 Washer ( f lange r ig id seal) 98 Screw (spl i t l ine) 99 Washer (sp l i t l ine) 100 Guide bush (spl i t l ine)

Pre-lubricating

device

165 Hydrostat ic hose 166 Non-return valve 167 Hydrostat ic adapter 168 Hydrostat ic screw joint

A Mark ing H Pressure l ine (Hydrostat ic) Q Suct ion l ine (Hydrostat ic J Connect ion for thermo sensor ( radia l ) K Connect ion for thermo sensor (o i l sump)

15/74

SCTLK 40 - 400 SCTLQ 40 - 400

3.3 Overv iew Drawings/ She l l

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3.3. Shell

Bear ing shel ls belong to the main parts of a “SC” bear ing. The design depends on the operat ion condi t ions.

Bear ing shel ls content of bot tom and top par t . The halves are manufactured together and only avai lab le as a uni t .

SC..Q The spl i t shel l (40) a l lows an assembly around the mounted shaf t . At the spl i t l ine screws (41) and taper p ins (42) jo in the two the halves.

The outer d iameter has a spher ica l des ign. The bore is according to the d iameter of the shaf t and l ined wi th bear ing metal . To supply the journal wi th lubr icant the pockets “G” are insta l led in the bore.

40 Shel l 41 Screw (spl i t l ine) 42 Taper p in (sp l i t l ine)

SCZ.. The lower hal f of the shel l is provided wi th a hydrostat ic pocket ( „H“) . In co l laborat ion wi th the hydrostat ic jack ing uni t the shaf t is l i f ted dur ing the s tar t / -stop procedure to reduce the wear .

In the connect ion l ine is sup-pl ied wi th a non- return valve (165) .

3.4. Oil rings

To assure the lubr icat ion supply of the bear ing o i l r ings may be used.

Oi l r ings consis t of upper and lower par t to be insta l led around a shaf t . The halves of an o i l r ing are manufactured together . Oi l r ings are only avai lab le as uni ts .

Fig. 02: Shell

Fig. 03: Hydrostatic

16/74

SCTLK 40 - 400 SCTLQ 40 - 400

3.4 Overv iew Drawings/ Oi l r ings

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3.4.1. Fixed oi l r ings

SC.F. Fixed o i l r ings (60, red) are c lamped to the shaft by us ing the spl i t l ine bo l t ing (61-64). The best way to adjust the f ixed o i l r ings is a p la in gap in the shaf t .

Dur ing operat ion the rotat ing r ing convoys lubr icant f rom the o i l sump to the top of the bear ing. There i t is wiped by the o i l scraper (85, b lue marked) and led to the con-nect ing cup in the top of the shel l .

From th is cup (Fig. 06) the lubr icant is guided to the pockets ins ide the shel l .

40 Shel l 41 Screw (sp l i t l ine) 42 Pin (sp l i t l ine)

60 Fixed o i l r ing 61 Screw (sp l i t l ine) 64 Washer (sp l i t l ine) 63 Guide bush (sp l i t l ine) 85-87 Oi l scraper

Fig. 06: Oil flow

Fig. 04: Fixed oil ring

Fig. 05: Split line bolting

17/74

SCTLK 40 - 400 SCTLQ 40 - 400

3.5 Overv iew Drawings/ Seal ing systems

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3.4.2. Loose oi l ring

SC.L. Lubr icat ion by loose o i l r ings is used in bear ings up to s ize 71.

Loose o i l r ings are p laced f ree-whee l ing around the shaf t .

The rotat ion of the shaf t s tar ts the rotat ion of the loose o i l r ings. The lubr icant adheres at the in-ner d iameter of the r ing and is g iven at the top di rect ly to the shaf t . The shaf t leads the lubr i -cant to the inner shel l .

40 Shel l

41 Screw (spl i t l ine)

42

80 Loose o i l r ing

81 Screw (spl i t l ine)

82 Pin (sp l i t l ine)

3.5. Sealing systems

Typical ly the bear ings type “SC” are suppl ied wi th r ig id seals ( type 20) .

Rig id seals consis t of upper and lower part to be insta l led around a shaf t . The halves of a r ig id seal are manufactured together . Rig id seals are only avai lab le as uni ts.

For specia l operat ing condi t ions or by customer requests other seal ing systems ( l ike f loat ing labyr inth seals or radia l shaf t seals) are avai lab le.

Fig. 07: Loose oil ring

Fig. 08: Dismounting the loose oil ring

18/74

SCTLK 40 - 400 SCTLQ 40 - 400

3.5 Overv iew Drawings/ Seal ing systems

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3.5.1. Rigid seal (Type 20)

Type 20

96 Screw 97 Washer 98 Screw 99 Washer 100 Guide bush 120 Rig id seal

„O“ Mark ing

Fig. 09: Rigid seal

19/74

SCTLK 40 - 400 SCTLQ 40 - 400

4.1 T ransport / Storage/ In t roduct ion

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4. Transport/ Storage

4.1. Introduction

This chapter descr ibes how to handle and store the RENK products safe ly.

4.2. Transport and Storage

WARNING!

When handl ing the equipment make sure the carrying capaci ty of the crane is adequate.

Use exclusively approved handl ing equipment.

WARNING!

Before transport or l i f t ing check the perfect condit ion of al l l i f t ing elements (eye bol ts, l i f t ing devices, clevis etc.) to prevent accidents by fal l ing bearings or bearing parts.

Do not work under f loating loads.

4.2.1. Weights

4.2.2. Transport of a slide bearing

Depending to s ize and vers ion of the s l ide bear ings type “SC” r ing bol ts or jo int bars are used to at tach l i f t ing devic-es.

Par t Weight

SCTLK 40 - 400 SCTLQ 40 - 400

Bear ing , com ple te ~ 565 kg ~ 565 kg

Hous ing , t op ~ 115 kg ~ 115 kg

Hous ing , bo t tom ~ 245 kg ~ 245 kg

She l l , com ple te ~ 105 kg ~ 105 kg

Fig. 10: Lifting points fo SC bearings

20/74

SCTLK 40 - 400 SCTLQ 40 - 400

4.2 T ransport / Storage/ T ransport and Storage

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Fig. 11: Lifting of an unit

WARNING!

Attach the bearing careful ly at the pre-scribed l i f t ing points when connect ing i t w ith the crane hook.

Never l i f t or t ransport machines, etc. by the bearing l i f t -ing points. These are only intended for assembly and dismant l ing of the bearing.

4.2.3. Transport of an unit with mounted sl ide bearings

Do not l i f t the tota l uni t by us ing the l i f t ing points of the “SC” bear ing.

Carry out the cor ros ion protect ion as descr ibed before and apply suf f ic ient lubr icant on the work ing surfaces of the bear ing.

Pul l the rotor against the sub-f rame by us ing t imbers p laced across the shaf t and press f i rmly in to the bear-ing .

21/74

SCTLK 40 - 400 SCTLQ 40 - 400

4.3 T ransport / Storage/ Corrosion protec t ion

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4.2.4. Eye bolts

When us ing eye bol ts to l i f t parts of the bear ing fo l low the h ints below:

T ighten the eye bol ts in to the tapped holes.

Before moving the bear ing or par ts by the eye bol ts make sure that the screws at the spl i t l ine are t ight -ened, otherwise the bot tom half of the bear ing could become detached.

Make sure that the eye bol ts are not exposed to bend-ing st ress, otherwise the bol ts could break.

NOTE!

When l i f t ing the bearing make sure that the handling e l-ements do not cause damage to attachment parts.

4.3. Corrosion protection

Bear ings suppl ied by RENK AG are not f i l led wi th o i l .

Uncoated metal l ic surfaces (even ins ide) of products sup-pl ied by RENK are protected by Tectyl 511M.

NOTE!

Check the corrosion protect ion f i lm af ter removal of the transport packing. Only an undamaged corrosion protec-t ion f i lm protects against corrosion.

Bear ings suppl ied by RENK AG are protected against cor ro-s ion for a per iod of twelve months i f stored as wr i t ten below.

4.3.1. Storage

Store the RENK bear ings in dry and moderate ly heated rooms only.

RENK AG advises against storing sl ide bearings out-doors.

Store the radia l bear ings only in thei r in tended mount-ing posit ion.

Make sure that radia l bear ings rest mot ionless.

To store the bear ings for a longer per iod than twelve month specia l re-protect ion works are necessary. For detai ls p lease contact our Service Depar tment.

22/74

SCTLK 40 - 400 SCTLQ 40 - 400


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4.3.1.1 Corrosion protect ion of mounted bearings

I f you want to protect the bear ing mounted on an insta l la t ion against cor ros ion proceed as fo l lows:

Dismant le the bear ing.

Clean the bear ing.

Paint or spray the top hal f , the bot tom hal f of the shel l and the shaf t wi th Tectyl 511M.

Re-assemble the bear ing.

Close a l l connect ion holes wi th screw plugs.

Seal the gaps between:

shaf t seal and housing

shaf t seal and shaf t by us ing a self -adhesive, permanent tape.

Remove the top s ight g lass and spray the ant icor ros ive in to the bear ing.

Put a bag of des iccant (s i l icate gel) ins ide. The desic-cant absorbs the humidi ty and prevents the format ion of condensat ion water ins ide the bear ing.

Close the bear ing.

4.3.1.2 In case the standsti l l period is longer than 1/2 year:

Repeat the preservat ion procedures.

Put a new bag of des iccant in to the bear ing.

4.3.1.3 In case the standsti l l period lasts more years:

Dismant le the bear ing shel ls .

Preserve and store the bear ing parts.

4.3.2. Hints to the corrosion preservative

Tectyl 511M bui lds an o i ly non-hardening protect ive f i lm. I t is in minor quant i t ies soluble by mineral lubr icants. For the-se reasons Tectyl 511M has not to be erased f rom the pro-tected parts . Never theless RENK recommends removing a l l conservat ion careful ly (d i r t par t ic les may set t le in the pro-

NOTE!

I f the bearing was re-conservated three t imes a f lushing procedure is

23/74

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t ec t ive f i lm dur ing pack ing and t ranspor tat ion and would be dangerous for the operat ional safety) .

Af ter carrying out three re-conservat ions the RENK AG rec-ommends removing a l l conservat ion, check ing the condi t ion of the bear ing and i ts parts . F lush the bear ing before f i l l ing i t wi th lubr icant .

4.3.2.1 Coat ing the metal l ic surfaces

Par ts of the RENK AG may be coated wi th Tectyl 511M by brush-paint ing, d ip-paint ing and by spraying . The surfaces have to be c lean and f ree of lubr icants.

4.3.2.2 Removal of the protection f i lm

Tectyl 511M may be removed easi ly by whi te spi r i t , kero-sene, d iesel fuel or s imi lar so lvents.

Also poss ib le is the removal by a lka l ine s t ream c leaning sys-tems. W hen us ing th is method the par ts must be dr ied immi-nent ly, the c leaning f lu id should conta in an ant i -corros ive addi t ive.

NOTE!

RENK recommends removing the conservat ion pr ior to instal lat ion. Dir t part icles may sett le in the protect ive f i lm during packing and transportat ion which would possibly af fect the operational safety.

24/74

SCTLK 40 - 400 SCTLQ 40 - 400

5.1 M ount ing/ Taking in to Order / Tools and equipment

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5. Mounting/ Taking into Order

This chapter descr ibes the s teps to be car r ied out when tak-ing the thrust bear ing into service. The respect ive notes on safety shal l be duly observed.

5.1. Tools and equipment

Fol lowing tools and equipment are necessary:

Set of open-end wrenches

Set of socket wrenches

Set of a l len keys

Torque wrench

Feeler gauge (up 0.05 mm)

Emery paper, p la in scraper, o i l stone

S l ing ropes for bear ing par ts, thrust pads and shaf t

L i f t ing equipment and eye bol ts

L iquid seal ing compound and screw lock ing adhesive

Sui table o i l conta iner

O i l wi th the viscos i ty ind icated ( ISO VG 46)

St r ik ing tool for assembly and d isassembly of the taper and dowel p ins

Insta l la t ion drawing 27110195 27117375

DANGER!

For assembly works shut down the uni t !

The purchaser has to protect al l rotat ing parts against unintentional contact .

Do not touch any rotat ing parts.

In cases of emergency actuate EMERGENCY – OFF.

WARNING!

Do not work under f loating loads!

Do not grab such heavy bearing parts ( for example parts of the housing) during assembly or dismantl ing work. This could result in bruising or injury to hands!

25/74

SCTLK 40 - 400 SCTLQ 40 - 400

5.2 M ount ing/ Taking in to Order / Preparatory work

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5.2. Preparatory work

Please check a l l equipment suppl ied for completeness im-mediate ly upon receipt . Any deviat ions and t rans i t damage must be repor ted to RENK r ight away. A wr i t ten conf i rmat ion of such a report is also required.

RENK bear ings type ”SC” are del ivered pre-assembled. Con-sequent ly, i t is necessary to d ismant le the bear ing f i rst .

To avoid problems which might occur dur ing t ranspor t , cer -ta in bear ing components (e.g . f ixed o i l r ing , seals) are de-l ivered d isassembled. In such cases, sk ip the corresponding sect ions.

5.3. Inserting the shaft

To insert the shaf t in to the bear ing d ismant le the top of the housing.

Dismount the shaf t seal ing system (p lease refer chap-ter 7.3 ) .

Dismount the top of the housing (p lease refer chap-ter 7.3 ) .

Dismount the top of the shel l (p lease refer chap-ter 7.3 ) .

SC.F. Dismount the f ixed o i l r ing (p lease refer chapter 7.3 )

SC.L. Dismount he loose o i l r ings (p lease refer chapter 7.3 )

L i f t the bot tom of the shel l out of the housing (p lease refer chapter 7.3 ) .

Clean the inner surfaces of the housing and a l l d isman-t led parts thoroughly (p lease refer chapter 7.4 ) .

NOTE!

RENK wil l dispose of any packing mater ial suppl ied with the bearings when this is returned to the factory f ree of charge.

NOTE!

Ensure that no dirt or other contaminants are al lowed to enter the radial bear ing.

Remove the conservat ion pr ior to instal lat ion. Dirt part i -cles may sett le in the protect ive f i lm during packing and transportation which would possibly af fect the opera-t ional safety.

26/74

SCTLK 40 - 400 SCTLQ 40 - 400

5.4 M ount ing/ Taking in to Order / Pre-a l ignment of the housing

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Pr ior to mount ing c lean the bear ing carefu l ly.

Lubr icate the spher ica l faces of housing and shel l thor-oughly. Use the same type of lubr icant as indicated for bear ing operat ion ( ISO VG 46) .

The assembly works are descr ibed in chapter 8 .

5.4. Pre-alignment of the housing

NOTE!

Make sure that al l bear ings instal led on a shaft l ine are open. To open the bearings unt ighten the spl i t l ine bol t-ing of the housing.

Do not let the l i f t ing equipment touch the working sur-faces of the shaft .

L i f t the shaf t to get suf f ic ient p lace for assembly.

Secure the shaf t against unexpected movements.

Adjust the bot tom par t of the housing on the foundat ion on (p lease refer the technical documentat ion of the uni t ) .

NOTE!

Make sure that al l rest ing surfaces of the foot plate are completely supported. This is the only way to avoid de-f lect ion of the bearing.

Use l ining plates of adequate size for height adjustment.

SCT.. SCW..

When adjust ing the bear ing p lease observe the la ter pos i t ion of the water in let and out let p ipes.

WARNING!

Do not work under f loating loads!

Do not grab such heavy bearing parts ( for example parts of the housing) during assembly or dismantl ing work. This could result in bruising or injury to hands!

Fig. 12: Resting surfaces

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Twis t su i table foot screws loose in to the bores (about 4 turns) to f ix the bot tom half of the bear ing safe ly in i ts p lace.

Use 8.8 qual i ty screws wi th h igh radia l loads.

SC..B SC..E SC..K SC..A

Prepare the shel l (please refer chapter 8.3 )

Turn in the bot tom par t of the shel l (p lease refer chap-ter 8.3 )

SC.L. Mount the loose o i l r ings (p lease refer chapter 8.3 )

SC.F. Mount the f ixed o i l r ing (p lease refer chapter 8.3 )

Mount the top of the shel l (p lease refer chapter 8.3 )

Close the bear ing (p lease refer chapter 8.3)

5.4.1. Al ignment of the bearing

NOTE!

I f both a non-locat ing and a locating bearing are to be mounted on a shaft l ine, both bearings must be adjusted in turn.

Start with adjustment of the locating bearing.

Take the d istances (a, b, c, d) between both spigot bores ( f ront and rear) and shaf t . Before measur ing the d is tances t ighten the screws of the spl i t l ine bol t ing to the torque rates g iv-en in chapter 9 .

A l ign the bear ing unt i l the d if ference of the measured values is smal le r than 0,4 mm. W hen a l ign ing the bear ing unt ighten the spl i t l ine bol t ing .

Repeat the proce-dure unt i l the to ler-ance is kept .

Use l in ing p lates of for the height ad-justment .

Fig. 13: Alignment

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A f ter adjust ing both bear-ings, t ighten up the foot p late bol ts to the rated torque.

The rated torque depends on the used foot p late bol ts , the mater ia l of the housing and the anchor ing in the foundat ion ( refer a lso the technical documentat ion of the uni t ) .

Check the a l ignment .

Use the pre-dr i l led holes to inser t two a l ignment p in bores in to the foundat ion. Ream the bores to the take the a l ignment p ins.

Insert the a l ignment p ins.

Mount the shaf t seal ing systems (p lease refer chap-ter 8.3 ) .

5.4.2. Cooler connection

SCT.. SCW..

SC bear ings vers ion “SCT. .” and “SCW..” are suppl ied wi th coolers.

Observe the necessary space for d ismount ing the cool-ers dur ing maintenance or repair when p lanning the layout the tota l uni t ( refer draw-ing 27110195 27117375 ) .

WARNING!

Coolers are pressure devices.

Observe the rules of the German Industr ial Safety Regu-lat ions or respectively the according nat ional regula-t ions.

SCT.. SCW..

The coolers were bui l t as s ing le components wi thout l imi ta-t ion devices.

WARNING!

Instal l and adjust devices for l imitat ion and supervision of pressure, temperature and f low rate in the cool ing wa-ter circui t to hold the permissible values.

Take care for rel ief valves in the cooling circui t .

Fig. 14: Pre-drilled bores of the taper pin

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SCT.. SCW..

Connect the bui l t - in cooler to the cool ing c i rcu i t .

Some cooler ser ies are f i t ted wi th d iagonal p ipe connect ions. These coolers are sel f -b leeding i f you con-nect the in let to the lowest connect ion and the out le t p ipe to the upper connec-t ion.

NOTE!

Connect each of the bui l t - in coolers individual ly to the water supply.

SCT.. SCW..

Mount the p ipes of the cool ing water supply f ree f rom dis tor t ion.

Avoid the addi t ional lead- in of forces, bending mo-ments or osc i l la t ions in to cooler , f langes or p ipes.

T ighten a l l screws and screw jo ints according to the torque rates g iven in chapter 9 .

5.4.2.1 Taking into order

NOTE!

Cooler are subjects of smal l wear by the f low of the cool ing f luid and small part icles inside.

RENK recommends a running-in of the coolers with con-t inuous water f low over a per iod of approx. two weeks using clean and fresh water . This procedure generates a wear and corrosion reducing oxide layer in the pipes. Adjust the f low veloci ty during this procedure to a value of 1.5 m/ s.

This procedure is especial ly recommended by using sea-water as cooling f luid.

Fig. 15: Cooler connection

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SCT.. SCW..

Check the coolers and a l l p ip ing for leakage.

Use a cool ing f lu id of suf f ic ient qual i ty.

Use f i l ters to prevent the enter ing of di r t par t ic les in to the cool ing system.

5.4.3. Lubricant f i l l ing

The procedure of lubr icant f i l ing is descr ibed in chapter 6.5 .

NOTE!

Viscosi ty ISO VG 46

Quanti ty in the housing

SCTLK 40 - 400: ~53 l SCTLQ 40 - 400: ~53 l

The viscos i ty of the lubr icant is general ly wr i t ten on the type plate of the bear ing.

5.4.3.1 Flushing the bearing

Before the f i rst star t , af ter long per iods of standst i l l or a complete d isassembly RENK AG recommends f lushing the bear ing thoroughly before the f i rs t o i l f i l l ing . Residues of conservat ion or contaminat ions can be removed by th is pro-cedure.

Connect a f lushing pump to the bear ing ( In let : o i l f i l l ing bore, out let : o i l dra in bore, refer drawings 27110195 27117375 ) .

F i l l the bear ings wi th the appropr iate grade of lubr icant to the prescr ibed level .

NOTE!

RENK recommends a f low rate of approx. 25-30l / min during the f lushing procedure.

Use a f i l ter with a qual ity of 15 µm (or better) .

Run the f lushing pump for approx. 3-4 hours.

Stop the f lushing pump and dra in the lubr icant of f v ia the dra in p lug located in the bot tom of the sump.

NOTE!

RENK AG recommends using f i l ters with a f i l t rat ion level of 250 µm (or better ing).

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5.5 M ount ing/ Taking in to Order / Star t ing operat ion af te r s tandst i l l

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Once a l l the lubr icant has been dra ined of f , c lose up the dra in p lug ( torque rate refer chapter ) .

Ref i l l the bear ing wi th f resh lubr icant to the appropr iate grade and up to the prescr ibed o i l level .

I f a bear ing type “SC” had been corros ion protected for a long t ime by us ing Tectyl 511M, p lease refer chapter 4.3 for c leaning the bear ing and i ts parts.

5.4.4. Further procedures

NOTE!

Take care for a suff icient pressure balance between the inner bearing and environment .

Over pressure inside the bearing may result in leakages.

5.4.4.1 Connect ion of electr ical instruments

I f the bear ings are f i t ted wi th e lect r ica l / e lect ronical ly devic -es (e.g . supervis ion devices, heaters) you f ind addi t ional in format ion in the appendix .

5.5. Starting operation after standstill

Clean the outer surfaces of the bear ing. Dust and d i r t impede the heat radiat ion.

Check the condit ion of the lubr icant wi th the help of the lubr icant manufacturer data. Depending on the durat ion of the s tandst i l l an o i l change is e i ther prescr ibed or recommended. A f lushing procedure may be recom-mended af ter a long t ime of standst i l l .

Check the lubr icant leve l and re-f i l l the bear ing i f nec-essary.

SCX.. SCZ..

T ighten a l l connect ions of the lubr icat ion uni ts at the bear ing according to the torque rates g iven in chap-ter 9 .

I f res is tance thermometers and/ or o i l sump thermome-ters are insta l led their t ightness (according to the torque rates g iven by the manufacturer ) .

WARNING!

The electr ical connect ion of the resistance thermome-ters must be executed according to the val id rules of the instal lat ion of electr ical equipments by authorized spe-cial ists.

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T ighten a l l screw plugs according to the torque rates g iven in chapter 9 .

SCX.. SCZ..

Check the funct ion of the lubr icat ion uni t (p lease refer the inst ruct ion manual of the lubr icat ion uni t ) . The vol-ume and pressure of the o i l supply must meet the val-ues g iven in the bear ing calculat ion.

Check the condit ion of the e lect r ica l devices (e.g . heat -er , thermo sensors, and o i l level swi tches) .

SCT.. SCW.. SCX.. SCZ..

Check the c lean funct ion of the cool ing f lu id supply.

The bear ing is ready for operat ion.

5.6. Starting operation after a disassembly of the bearing

T ighten a l l screws, screw jo ints and screwed connec-t ions according to the torque rates g iven in chapter 9 .

If the bot-tom of the

bearing has been dismount-

ed:

T ighten the foot p late bol ts to the rated torque. The rated torque depends on the used foot p late bol ts , the mater ia l of the housing and the anchor ing in the foun-dat ion ( refer a lso the technical documentat ion of the uni t ) .

Take care for an adequate lubr icant level in the bear-ing (p lease refer chapter 6.5 )

SCT.. SCW..

Check the c lean funct ion of the cool ing f lu id supply.

SCX.. SCZ..

Check the funct ion of the lubr icat ion uni t (p lease refer the inst ruct ion manual of the lubr icat ion uni t ) . The quant i ty and pressures of the o i l f low must meet the values of the bear ing calculat ion.

Examine the condi t ion of the complete bear ing by a vis-ual inspect ion.

I f the bear ing is in a sat isfactory manner , the bear ing is ready for operat ion.

Execute a test run.

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5.7. Controls during first operation/ test run

RENK AG recommends a test run af ter a long t ime of stand st i l l , a d isassembly or the f i rs t run of the bear ing .

Check the lubr icant leve l before s tar t ing the uni t .

SCX.. SCZ..

Swi tch on the lubr icat ion uni t before star t ing the uni t .

Check the volume and pressure of the suppl ied lubr i -cant . They must meet the values g iven in the bear ing calculat ion.

NOTE!

H.P. uni ts:

Switch on H.P. unit before start ing operat ion of the whole unit .

Do not stop H.P. uni ts before the certain minimum speed has reached.

During shut down of the whole uni t start the H.P. uni t again (before the certain minimum speed is reached) .

Stop the lubrication uni t af ter stand st i l l of the shaft .

NOTE!

L.P. uni ts:

Switch on L.P. unit before start ing operat ion of the whole unit .

Do not stop L.P. uni ts before the operat ion has been ended.

Stop the lubrication uni t af ter stand st i l l of the shaft .

SCT.. SCU

Switch on the circulating pump before start ing op-erat ion of the whole unit .

Do not stop the circulating pump before the opera-t ion has been ended.

Stop the circulating pump after stand st i l l of the shaft .

Mon i tor the o i l level and o i l f low into the bear ing .

Mon i tor the temperature of the thrust bear ing dur ing operat ion.

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The temperatures g iven f rom local thermometers and the re-sistance thermometers should r ise evenly up to the set t led permanent operat ing temperature.

I f the temperature does not s tabi l ize be low the bear ing tem-peratures s tated in the bear ing calculat ion, the insta l la t ion must be s topped and the cause be found.

SCT.. SCW.. SCX.. SCZ..

When the bear ing o i l temperature r ises above 50 °C the cool ing water system has to be swi tched on.

Dur ing commiss ioning, check a l l bo l t ing, especia l ly be-low the o i l level l ine .

Stabi l i ty depends on many inf luences. I f the bear ing does not run quiet ly dur ing in i t ia l s tar t ing i t must be s topped im-mediate ly and the cause be found. Unbalance above a cer -ta in l imi t is admiss ib le only, i f a l ready s tated in the p lanning s tage and duly considered in the design of the bear ing .

Stop the uni t immediate ly i f the is not running quiet ly dur ing the t r ia l run and e l iminate the reason.

Supervise the bear ing dur ing a t r ia l run of several hours under operat ing condi t ions.

5.8. Abnormal temperatures

The bear ings of RENK are designed to ru le the operat ing condi t ions of the uni t g iven by the purchaser . Never theless i t is recommended to cont ro l the bear ing dur ing operat ion (re-fer “maintenance and care act iv i t ies“ , chapter 6) .

NOTE!

Any leakage found is to be recti f ied immediately.

Check whether al l bear ing bolt ing have been properly t ightened.

NOTE!

We recommend after a running period of 5 to 10 hours ( test run at the manufacturer) an inspect ion of the work-ing surfaces for signs of damage (edge loading, striae, pressure marks). Remove these spots by careful scrap-ing.

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I f the operat ing temperatures s tated by RENK cannot be reached (cold bear ing) , invest igate for the reasons. A possi-b le cause for instance may be a defect ive thermometer.

E l iminate the reason of the r ise of temperature to avoid damages of the bear ing.

Possib le causes of the malfunct ion may be:

canted mount ing

insuf f ic ient lubr icat ion by:

insuf f ic ient o i l vo lume

incorrect mounted f ixed o i l r ing

incor rect mounted oi l scraper

o i l loss by leakage

incor rect o i l v iscos i ty

ingress of water

inadequate cool ing power .

NOTE!

Do not operate before the certain minimum speed (refer the bearing calculat ion) is reached.

This prevents inadmissible operat ing condit ions which may result in damage or destruct ion of the bearing.

NOTE!

In case

• the admissible bearing temperature exceeds 15 K

• inadmissible vibrations occur

• unusual noises or odors are noticed

• monitor ing equipment tr iggers alarm

shut down the instal lat ion and inform the maintenance personnel in charge.

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6. Care and Maintenance

6.1. Introduction

This chapter ind icates maintenance rout ines and re lated safety measures.

6.2. Maintenance and care activities

The service l i f e of machinery and equipment can be consid-erably increased by tak ing appropr iate maintenance and care steps.

Check the o i l level only when the bear ing is in p lane posi t ion and the unit in standst i l l .

Perform visual inspect ions on a dai ly bas is . Check the bear ing for leakages.

Check the equipment regular ly for unusual noise.

To check the qual i ty of the o i l , perform oi l analyses regular ly. For th is reason a lubr icant measurement con-nect ion (81) is added to the bear ing .

Perform maintenance work according to the fo l lowing maintenance schedule.

DANGER!

Do not touch rotat ing components.

I f you intend to perform maintenance work shut down the uni t .

NOTE!

In case the admissible bearing temperature exceeds 15 K

• inadmissible vibrations occur

• unusual noises or odors are noticed

• monitor ing equipment tr iggers alarm

• shut down the instal lat ion and inform the mainte-nance personnel in charge.

Do not operate the bearing below the transi t ion speed values indicated in the bearing calculation, thus avoid-ing inadmissible operat ing condit ions, which could lead to damage to the bearing.

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C lean the external par ts of the bear ing. Dust and d i r t impede the radiat ion of the heat.

Clean a l l f i l ters ( i f exis ts) .

6.3. Maintenance schedule

Maintenance work Deadl ine

Visual check Dai ly

Check o i l level Dai ly

Check o i l for unusual noise Week ly

Cleaning of the exter ior any 100 - 1000 hours

Oi l change

Sel f lubr icat ion, reversal operat ion:

Sel f lubr icat ion, cont inuous operat ion:

External lubr icant supply:

Any 5 .000 operat ing hours

Any 8 .000 operat ing hours

Any 20.000 operat ing hours

Depending upon capaci ty of o i l tank and c i r -cu lat ing rate (p lease observe a lso the indi -cat ions for the use of the lubr icat ing o i l )

NOTE!

Should shorter intervals be required in the event of ex-traordinary ambient condit ions, an oi l analysis per-formed by mineral oi l companies may form the basis for decision as to whether the oi l in the bearing is st i l l sui table for use.

WARNING!

Do not contaminate the environment with lubricants.

Col lect spent oi l in sui table containers and dispose of the oi l in l ine with the respect ive regulations.

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Maintenance work Deadl ine

Inspect ion of the bear ing Dur ing prevent ion maintenance work.

Immediate ly i f

• the bear ing temperature exceeds 15 K over the indicated value (see the EDP-calculat ions)

• unusual operat ing noises occur

• you not ice unusual modif icat ions of the lubr icant

• increased o i l level in the case.

Hydrostat ic hoses Check annual ly

Change any s ix years

Seals made of p last ic Check dur ing bear ing inspect ion

Change any s ix years

Cooler inspect ion Visual inspect ion via bore scope:

• annual ly

• af ter unexpected tens ions or abnormal service condi t ions

In tens ive inspect ion:

• Every s ix years

6.4. Non-operating of the unit

In case of a susta ined in ter rupt ion of operat ion fo l low the h ints g iven in chapter 4.3 of the instruct ion manual.

SCT.. SCW..

I f there is no f low of cool ing water in the cooler (17):

Less than 3 days: keep the cooler wi th the stagnant water

More than 3 days: dra in the cooler complete ly and r inse wi th sal t f ree water .

Dur ing f reezing per iods dra in water f rom the cooler .

WARNING!

I f the cooler is under pressure, i t is str ict ly forbidden to unscrew any screw or screw joint of the coolers.

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6.5 Care and M aintenance/ Lubr icant change

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6.5. Lubricant change

WARNING!

Oil is f lammable. Consider the f ire hazard.

During a f i l l ing or a draining procedure make sure the lubricants do not contaminate the environment.

6.5.1. Check of the lubricant level

Bear ings type “SC” are suppl ied wi th lubr icant level ind icators, normal ly o i l s ight g lasses (Fig . 16) .

On customer requirement other lubr i -cant level gauges l ike the level ind ica-tor (F ig . 17), e lect r ica l or e lect ronical ly leve l measure systems are avai lab le. Addi t ional in format ion to e lectr ica l or e lect ronical ly level swi tches is g iven in the appendix .

Dur ing operat ion the rotat ing shaf t to-gether wi th the o i l r ings (or the o i l f low at the connect ions of an external lubr i -cat ion uni t ) generate an in ternal o i l f low ins ide the bear ing.

This resul ts in considerable f luctuat ions of the o i l level .

NOTE!

Check the oi l level i f the shaft is not rotat ing and the bearing is standing plain.

During operat ion the internal oi l f low may result in false information about the lubricant level .

General ly the viscos i ty ( ISO VG 46) of the lubr icant is shown at the type plate of the bear ing.

Fig. 16: Oil sight glass

Fig. 17: Level indicator

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6.5.2. Drain the lubricant

Af ter a long per iod of s tandst i l l or a complete d isassembl ing i t is recommended to f lush the bear ing thoroughly before the f i rs t o i l f i l l ing .

For dra in ing the lubr icant screw plugs (21) are in tegrated in the bear ing in the bot tom of the bear ing.

Dra in the lubr icat ing o i l in st i l l warm condi t ion. Impur i -t ies and res idues wi l l thus be scavenged.

CAUTION!

Do not contact the warm bearing. Don’t get your f ingers or your body burnt .

SCX.., SCZ..

Stop a l l lubr icat ion uni ts .

Close the in let and out le t connect ion between bear ing and lubr icat ion uni t .

Change the lubr icant of the supply uni t .

Clean the tank. Fur ther informat ion of maintenance work (e.g. c leaning/ chang ing of f i l ters) is g iven in the inst ruct ion manual of the lubr icat ion uni t .

To dra in the lubr icant complete ly, open the cover (10) at the top of the housing. This a l lows pressure equi ta-t ion between bear ings and environed.

CAUTION!

Any oi l spi l lage must be collected in sui table contain-ers. During a f i l l ing or a draining procedure make sure the lubricants do not contaminate the environment.

Unscrew the o i l out le t screw.

Dra in the lubr icat ing o i l and col lect i t .

WARNING!

The uni t has been taken out of service.

Make sure rel iable measures are taken to prevent the uni t f rom being activated inadvertently.

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NOTE!

In case the lubricat ing oi l contains unusual residues or is visibly changed, el iminate the causes. I f necessary, carry out an inspection.

6.5.3. Fi l l ing in the lubricant.

F i l l in f resh lubr icant of the viscos i ty

NOTE!

Viscosi ty ISO VG 46

Quanti ty in the housing

SCTLK 40 - 400: ~53 l SCTLQ 40 - 400: ~53 l

NOTE!

Check the level of the lubricant . The oi l level l imits are.

oi l s ight glass (22):

minimum: middle of oi l s ight glass minus 10mm

maximum: middle of oi l s ight glass plus 10mm

Level indicator (23) :

Level indicators are signed with markings for minimum and maximum.

SCT.., SCU..

Open the o i l f i l l ing screw (20) .

F i l l in f resh lubr icant , unt i l the level reaches the cent re mark ing of the level ind icator .

Star t the c i rcu lat ing pump for a shor t t ime for b leeding the tota l system.

Check the lubr icant level again, re- f i l l lubr icant i f nec-essary.

SCZ.. SCT.. SCX..

I f the bear ing i f f i t ted wi th a low pressure (L.P.) lubr icat ion uni t :

Clean the o i l tank and f i l ters before f i l l ing in f resh lub-r icant .

Star t the uni t for a shor t run unt i l the bear ing is f i l led wi th lubr icant .

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SCZ.. SCT.. SCX..

I f the bear ing i f f i t ted wi th a h igh pressure (H.P.) lubr icat ion uni t (hydrostat ic jack ing uni t ) :

Clean the o i l tank and f i l ters before f i l l ing in f resh lub-r icant .

F i l l the bear ing wi th lubr icant as descr ipt before.

Star t the uni t for a shor t run.

I f the calculated o i l f low is reached, the H.P. unit is b leed and the lubr icat ion uni t is ready for operat ion.

Check the level of the lubr icant af ter f in ish ing the pro-cedure. Re-f i l l lubr icant i f necessary.

Mount the lubr icat ion f i l l ing screw and t ighten i t accord-ing to the torque rates g iven in chapter 9 .

NOTE!

Not enough lubricant leads to temperature r ises and thus to damages to the bearing.

Too much lubricant leads to leakages.

SC.L. Too much lubricant could slowdown the oi l r ings con-siderably; this leads to less lubricat ion and damages the bearing.

Re-mount the cover (10).

Check the o i l level again before star ing the tota l uni t .

6.6. Selection of lubricants

For the lubr icat ion of RENK bear ings we recommend mineral o i ls of ISO-VG viscosi ty c lass i f ied acc. DIN 51517, par t 2 (Circulat ing o i l CL) and DIN 51524, par t 1 (Hydraul ic lube HL)

The use of lubr icants conta in ing EP addi t ives ( l ike CPL and HLP) is not a l lowed. Such lubr icants can lead to unwanted deposi ts on the s l ide faces of the bear ings and consequent ly to damages.

SAE c lass i f ied mineral-o i ls for eng ines are a lso a l lowed for use wi th RENK bear ings.

Synthet ic lubr icants are not general ly recommended for RENK bear ings. In such a case p lease contact our service depar tment.

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6.7. Life cycle

Using a proper ly se lected s l ide bear ing that is cor rect ly mainta ined and operat ing under hydrodynamic condi t ions, there are no wear ing parts and therefore no l i fe l imit .

Dur ing operat ion a var iety of condi t ions could occur , each having a negat ive inf luence on the service l i f e of the bear-ing . Such condit ions are for example vibrat ions, shock loads, dust or cor ros ion.

Bear ings type “SC” have, i f the ru les for insta l la t ion, mainte-nance and operat ing are kept , a l i f e t ime of several decades, even longer than the l i fe t ime of the tota l uni t .

S ing le components (e.g. radia l shaf t seal ing , o-r ings, and hydraul ic hoses) content e lastomer . These e lastomeres are subjects of a natura l deter iorat ion. Informat ion about the maintenance intervals are g iven in chapter 6 .

We recommend for a proper deposal at the end of l i f e t ime the fo l lowing methods.

Discharge and depose the lubr icants/ coolant of the bear-ing in profess ional manner.

Depose e lect ronical ly par ts (e.g. contro ls , sensory e le-ments, heaters, cable) mono-f ract ional ly and in profes-s ional manner.

Depose a l l non- i ron par ts (e.g . coolers, seal ing) mono-f ract ional ly.

Bear ing shel ls consis t of s teel carr iers and a RENKmetal s l id ing surface ( t in based, lead-f ree) .

SC..A Thrust pads consis t of s teel car r iers and a RENKmetal s l id-ing surface ( t in based, lead-f ree) .

Housings are made of cast i ron or cast s teel .

Recyc le these mater ia ls under s tr ic t ly at tent ion of the legal regulat ions.

NOTE!

Str ict ly fol low the legal regulations of ordinary disposal val id at the date of recycl ing and disposal .

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7. Dismounting of the Bearing

7.1. Introduction

This chapter descr ibes the procedure of d isassembly/ as-sembly the thrust bear ing. I t is mandatory to observe the safety notes.

7.2. Tools and equipment




Set of a l len keys




Sui table o i l conta iner

lubr icant (v iscos i ty ISO VG 46 or refer type plate )

St r ik ing tool for d isassembly of the taper and dowel p ins

Drawings 27110195 27117375

WARNING!



For handl ing the bearing make sure that the carrying capaci ty of the crane is suff icient. Use approved han-dl ing elements only.

Attach the radial bear ing careful ly to the l i f t ing hook. Make use of the l i f t ing points provided for this purpose (refer chapter 4) .


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7.3. Dismounting

7.3.1. Preparatory work

Close a l l external supply connect ions ( lubr icant , cool-ant , e tc. ) .

Remove a l l e lect r ica l connect ions at the top of the housing. The e lect r ica l d isconnect ion of the res is tance thermometers must be executed according to the val id ru les of the insta l la t ion of e lectr ica l equipments by au-thor ized specia l is ts .

Remove a l l connect ions ( lubr icant p ipes, capi l lary tubes, suppor ts, common auxi l iar ies) between top and bot tom half of the bear ing.

Dra in the lubr icant (chapter 6.5 ) .

Unload the bear ing f rom forces.

7.3.2. Sealing system

The fo l lowing chapter descr ibes the d isassembly procedure of the general ly used shaf t seal ( r ig id seal , type 20) .

I f another seal ing system is used you wi l l f ind informat ion in the appendix.

7.3.2.1 Rigid seal ( type 20)

Type 20 bearings size 17-32

Dismount the screws (96) .

Dismount the screws at the spl i t l ine (98) .

Take the r ig id seal in ax ia l d i rect ion away f rom the housing (120).

Type 20 bearings

size 36 and larger

Unt ighten a l l screws (96) at the f lange of the upper half of the r ig id seal .

Dismount the screws at the spl i t l ine (98) .

Dismount the guid ing bushes (101).

Insert a r ing bolt in to the thread in the top of the r ig id seal and add the l i f t ing device.

Dismount a l l screws (96) at the f lange of top of the r ig -id seal . Take the r ig id seal top in axia l d i rect ion away f rom the housing.

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Type 20 bearings

size 36 and larger

Insert two r ing bol ts in the threads at the spl i t l ine.

Dismount a l l screws (96) at the f lange of bot tom of the r ig id seal.

Dismount the gasket f rom the f lange surface of the housing. Replace damaged gaskets.

7.3.3. Top of the housing

Dismount the taper p ins (7) .

Dismount the screws at the spl i t l ine of the hous-ing (5, 6) .

Mount the l i f t ing device at the l i f t ing points (F ig. 01). L i f t up the top of the housing in ver t ica l d i rect ion.

Spherical insulation

bearing type „K“

Pay at tent ion to the l i f t ing procedure.

The top of the housing must not jam dur ing d ismount ing. This may damage the spher ica l insulat ion (whi te p last ic fo i l ) .

7.3.4. Top of the shell

Dismount the taper p ins (42).

Insert r ing bol ts in to the threads in the top of the shel l and at tach the l i f t ing device

Dismount the screws at the spl i t l ine (41) and l i f t of f the top of the shel l .

7.3.4.1 Bearings with axial parts

SC..B SC..E SC..K SC..A

The shel ls of such bear ings are p laced between two thrust co l lars of the shaf t .

L i f t up the top of the shel l very carefu l ly. Do not dam-age the sensi t ive s l id ing surfaces.

Fig. 18: Lubrication pockets type „B”, „E” und „K”

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SC..A Clamping r ings keep the thrust pads in thei r pos it ion.

L i f t up the top of the shel l very carefu l ly.

Pul l the thrust pads (54, 55) out of the shel l very carefu l ly.

Dismount the shroud r ing (52).

NOTE!

The sl iding surfaces of shel l and thrust pads are ex-tremely sensi t ive.

Do not damage these surfaces during disassembly work.

7.3.5. Oil r ings

7.3.5.1 Fixed oi l r ing

SC.F Turn the shaf t unt i l the spl i t l ine of the f ixed o i l r ing (60) is hor izonta l .

Secure the f ixed o i l r ing (e.g . suppor t ing f rom below) so that the lower hal f of the r ing cannot fa l l in to the bear ing dur ing d ismount ing work.

NOTE!

Do not damage the f ixed oi l r ing or the sl iding surface.

SC.F Dismount the spl i t l ine screw (61) and take out the lock washer (64).

L i f t up the top of the f ixed o i l r ing and take out the guide bush (62) .

Dismount the halves of the f ixed o i l r ing.

7.3.5.2 Loose oi l r ings

SC.L Div ide the halves of the of one o i l r ing (80) at the spl i t l ine.

SC.L bearing

size 17-40

one screw (81)

two p ins (82)


SC.L bearing

size 45-71

three screws (81)

two p ins (82)


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SC.L Dismount the p ins (82) and screw (81) . Divide the halves of the loose o i l r ings carefu l ly wi thout the usage of tools .

Take out both halves.

Assemble the halves again. This wi l l avoid defor-mat ions dur ing the t ime of storage outs ide the bear ing .

Check the geometry.

Dismount the second loose o i l r ing as descr ipt before.

7.3.6. Bottom half of the shell

NOTE!

Be sure that al l bear ings of the shaft l ine are open.

Unt ighten the spli t l ine bol ts for this reason.

Do not damage the sealing surfaces.

Do not damage the sl iding surfaces.

SCX.. SCZ..

Fig. 21: Hydrostatic hose

Dismount the hydrostat ic hose (165) wi th screw jo int (169) f rom the housing.

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Unload the lower hal f of the shel l f rom radia l loads ( l i f t or suppor t the shaf t ) . Secure the shaf t against unin-tended movement.

Turn the lower half of the shel l (40) out of the housing .

L i f t the half carefu l ly up f rom the shaf t .

7.3.7. Cooler

SCW.. SCT..

I t is not necessary to d isassemble other par ts of the bear ing to d ismount the cooler (13).

The cooler is at the f lange s ide f ixed by screws (16, 17). The other s ide is f i t ted wi th a p i lo t to suppor t the cooler . This p i lo t is guided by the adapter (18) . Several types of coolers are f i t ted wi th suppor ts under the cooler for th is purpose.

WARNING!

I f the cooler is under pressure, i t is str ict ly forbidden to unscrew any screw or screw joint of the coolers.

Beware of the r isk of gett ing burnt by warm coolers.

Fig. 23: Cooler anchorage

Fig. 22: Turning out the lower half of the shell

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SCW.. SCT..

I f the bear ing is open and you recognize s ludge at the cooler d ismount and c lean i t .

A cooler check may be necessary i f you f ind water in the lubr icant .

SCW.. SCT..

Stop the lubr icat ion uni t .

Dra in the lubr icant (p lease refer chapter 6.5)

Dismount the p ipes of the cool ing f lu id supply.

Dismount the screws (17) at the cooler f lange.

Pul l the cooler very carefu l ly out the housing.

NOTE!

Avoid contact between coolers and housing or f lange of the shaft . Do not damage the coolers or the gaskets.

Do not deform the cooler by l i f t ing devices.

7.4. Cleaning of the Bearing

NOTE!

Ensure that no dirt or other contaminants are al lowed to enter the bearing.

Remove the conservat ion pr ior to instal lat ion. Dir t part i -cles may sett le in the protective f i lm during packing and transportation which would possibly af fect the opera-t ional safety.

Use only non-aggress ive detergents, such as for in-s tance:

VALVOLINE 150

A lka l ine c leaning solvents (pH value 6 to 9, short reac-t ion t ime).

WARNING!

Observe the instruct ions for the use of the detergents.

Fig. 24: Cooler flange

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C lean thoroughly, removing a l l t races of d i r t , preserva-t ives, g rease, o i l etc .

Pay at tent ion that al l seal ing surfaces are f ree f rom rem-nants of used seal ing compound.

Clean a lso lubr icat ion uni ts , p ipes and hose and the sur-face of the cooler .

Use the c leaning detergents according to the inst ruct ions of the suppl ier .

NOTE!

Never use cleaning wool or loosely woven cloth. Resi -dues of such mater ials left in the bearing could lead to excessive temperatures and therefore to damage to the bearing.

7.4.1. Cleaning the cooler

In case the cooler (13) is incrusted wi th o i l s ludge remove the incrustat ion by us ing for instance a wire brush.

I f there are sedimentat ions c lean the cooler p ipes by us-ing a p ipe brush.

7.5. Control for wear

Check the condit ion of a l l bear ing par ts by visual in-spect ion.

Check the s l ide faces of thrust pads, shel ls , shaf t and shaf t thrust co l lar for wear .

The table below provides in format ion on the par ts that might be replaced in case of wear .

NOTE!

RENK recommends not using chemical detergents for cleaning the cooler .

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S l ight ly scuf fed areas of the s l ide faces of the bear ing metal can be smoothed and thus made operable again by carefu l re-scraping.

Bearing part Wear condit ion Maintenance measures

She l l Scor ing She l l tem pera ture be fore inspec t ion : • no t inc reased - no new pads • inc reased - new pads

W hi te m eta l la yer dam aged

new she l l

Bow wave r idges new she l l

Ax ia l par ts Scor ing Ax ia l par t tem pera ture be fore inspec-t ion : • no t inc reased - no new th rus t pads • inc reased - new th rus t pads

W hi te m eta l la yer dam aged

new th rus t pads

Bow wave r idges new th rus t pads

Shaf t sea ls Baf f les broken or dam aged

New shaf t sea l

Loose o i l r ing Geom et r y ( round-ness , evenness) v is -ib l y changed

New loose o i l r ing

F ixed o i l r ing Bur r ing and scor ing Debur r and c lean

O i l sc raper Broken edges New sc raper

Bur r ing and scor ing Debur r and c lean

Non- re turn va lve

Not re l iab le opera-t ion

Renew

Insu la t ing fo i l dam aged Renew (contac t RENK AG )

Coo ler Depos i ts C lean

Depos i ts a re no t rem ovab le : new coo ler

P las t ic par ts E las tom er hardened, re f rac tor y o r b lown

Renew

NOTE!

Never re-work such areas with emery paper since rem-nants of the emery corundum may cause signi f icant wear.

Ensure that no dirt or other contaminants are al lowed to enter the thrust bearing.

Contaminants destroy the sensit ive running surfaces!

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Re-f in ish the s l id ing surfaces only hold ing the geomet-r ic d imensions. I f necessary order spare parts .

NOTE!

I f dur ing re- f inishing work the permit ted tolerances are exceeded, special parts (e.g. the shel l ) must be manu-factured with oversize.

Please contact our service department in such cases.

The r ight evaluat ion of the wear condi t ion, especia l ly of the work ing surfaces of the bear ing shel l , requires a lo t of expe-r ience. I f in doubt, replace the worn par ts wi th new ones. The service depar tment of RENK is avai lab le for th is pur -pose.

7.5.1. Further controls for wear

SCX.. SCZ..

Check that the non-return valve (166) is work ing proper ly when the bear ing is d isassembled.


bearing type „K“

Check the spher ica l insulat ion (p last ic fo i l ) of the hous-ing (1) .

Please contact the service of the RENK AG i f the fo i l is damaged.

Check the condi t ion of a l l hoses.

Hoses have a l imi ted l i fe t ime. For th is reason RENK AG recommends to renew these par ts dur ing prevent ion mainte-nance work.

7.5.2. Cooler check

SCW.. SCT..

Inspect any s ix years the condi t ion of the cooler .

Any six years or during prevent ion maintenance work:

Depending on the type of cooler i f may be necessary to d isassemble the cooler . Hints for d isassembly of such coolers are g iven in the appendix.

Check the inner d iameter of the cooler p ipes for depos-i ts and corros ion.

Remove the deposits by us ing a p ipe brush.

I f a removal is not poss ib le renew the cooler .

NOTE!

RENK recommends not using chemical detergents for cleaning the cooler .

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8. Assembly of the Bearing

8.1. Introduction

Re-assemble the bear ing shel l by fo l lowing the s teps de-scr ibed above in reversed order.

8.2. Sealing compounds for RENK bearings

Outer sp l i t l ine surfaces l ike spl i t l ine of the housing or f lange surfaces must be sealed by non-hardening and per-manent e last ic seal ing compounds against leakages.

Such compounds are a lso used as secondary seal ing in combinat ion wi th f loat ing labyr inth seal systems.

NOTE!

Clean al l seal ing surfaces thoroughly f rom dir t and lub-r icant before using a sealing compound. This is abso-lutely necessary to get a sure seal ing.

WARNING!



For handl ing the bearing make sure that the carrying capaci ty of the crane is suff icient. Use approved han-dl ing elements only.

Attach the radial bear ing careful ly to the l i f t ing hook. Make use of the l i f t ing points provided for this purpose (refer chapter 4) .


WARNING!

Observe the securi ty instructions for the use of the seal ing compounds.

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NOTE!

Use the seal ing compound according to indicat ion of the manufacturer and check the resistance against the used lubricants.

Check i f the operator of the uni t accepts the seal ing compound.

I f , in very rare cases, i t is not poss ib le to get an opt imal seal ing p lease contact our service depar tment.

8.3. Assembly

8.3.1. Tools and equipment




Set of a l len keys

Torque wrench

Feeler gauge (up 0.05 mm)




L iquid seal ing compound

Sew lock ing adhesive

Lubr icant (v iscos i ty ISO VG 46 or refer type plate )

Drawings 27110195 27117375

8.3.2. General hints

NOTE!

Remove al l impurit ies or similar such as screws, nuts, dir t , swarf etc. from inside the bearing. I f left inside they could lead to damage to the bearing.

Cover up the opened bearing during breaks.

Carry out al l assembly operat ions without making use of force.

Use a l iquid screw locking compound (e.g. LOCTITE 242) for al l housing, spli t l ine and f lange screws.

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Apply some lubr icant (v iscos i ty ISO VG 46, p lease refer type plate ) to the spher ica l surfaces in the bot tom of the housing (2) and to the work ing surfaces of the shaf t . This reduces the f r ic t ion dur ing assembly work .

Seal the spl i t l ine between the halves of the housing.

Secure a l l screw connect ions marked in drawing 27110195 27117375 wi th screw lock ing adhesive re-spect ive ly seal ing compound.

T ighten a l l screws according to the torque rates g iven in chapter 9 .

A lways use new lock washers and self - lock ing nuts.

Check the bear ing for leakages at the beg inning of op-erat ion. Seal a l l leakages immediate ly.

8.3.3. Preparing the shells

NOTE!

Clean al l parts very careful ly before instal lat ion. Dir t and dust could damage the bearing ser iously.

SCZ.. Mount the hydros tat ic hose (165) wi th non-return valve (166) and screw jo int (168) at the shel l .

Regard the cor rect d i rect ion of insta l la t ion of the shel l (hose (165) => connect ion adapter (167) ins ide the housing).

SC..A Shel ls of bear ings type “SC. .A” are f i t ted wi th c i rcu lar pads. Notes to the used c ircu lar pads are g iven in the appendix .

Mount the shroud r ings (52) on the shel l (40).

NOTICE!

Make sure that the work place is clean.

Ensure that no dirt or other contaminants are al lowed to enter the bearing.

Contaminat ion and damages to the bearing, especial ly of the working surfaces, have a negat ive inf luence on the operat ing quali ty and could lead to premature wear.

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NOTE!

The shroud r ings are necessary for the circular pads. Two of these circular pads (55) are prepared for temper-ature sensors. To pick up these pads the shroud rings are f i t ted with special gaps for sensors and ant i - rotation pin. Instal l the shroud r ings on their exact posi t ion.

SC..A Press the RD c i rcu lar pads (55) in to the spe-c ia l p ick -up bores. Re-mark the gaps.

Press the RD c i rcu lar pads (54) in to the s tandard p ick -up bores.

The spr ings at the lower par ts keep the posi t ions of the c i rcu lar pads.

NOTE!

Avoid heavy blows when dismantl ing the equipment.

Make sure axial forces are not exerted during disman-t l ing.

8.3.4. Bottom of the shell

NOTE!

Take care not to mix up parts of several bearings. The bearings and their parts are marked to prevent such mistakes.

Apply some lubr icant (v iscos i ty ISO VG 46, p lease refer type plate ) to the spher ica l surfaces in the bot tom of the housing (2) and to the work ing surfaces of the shaf t . This reduces the f r ic t ion dur ing assembly work .

Shaft not inside the bearing

Locate the lower hal f of the shel l in the spher ica l sur -face of the housing.

Shaft in-side the bearing

P lace the lower half of the shel l (40) on the shel l ( refer Fig. 26) . Turn the shel l in to the bear ing wi th the spl i t l ines of housing and shel l in t rue a l ign-ment.

Fig. 25: Mounting a circular pad

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First in-stallation

I f the bot tom half of the shel l does not turn in eas i ly, readjust the bot tom hal f of the housing.

Installation after

inspection

I f the bot tom half of the shel l does not turn in eas i ly, check the d is tance between shaf t and housing. L i f t up the shaf t (by support or l i f t ing device) i f necessary.

SC..A SC..B SC..K

Put the lower hal f of the shel l very carefu l ly on the shaf t and turn i t in (Fig. 26) . Die axia l s l id ing surfaces must not get damaged.

SC..E

Take care to insta l l the shel l accord ing to the sense of rotat ion. (Fig. 18) .

NOTE!

Do not damage the sensit ive sl iding surfaces.

Lower down the shaf t unt i l i t rest in the lower hal f of the shel l .

8.3.5. Oil r ings

8.3.5.1 Loose oi l r ings

SC..L Div ide the parts of the loose o i l r ing (chapter 7.3 ) and p lace the halves in the gap of the shel l around the shaf t .

Insert a t both spl i t l ines of the loose o i l r ing the p ins (82). Do not use tools or other devices.

Adjust both halves of the loose o i l r ing t i l l the spl i t l ines match each other .

Insert the screws (81) .

T ighten the screws according to the torque rates g iven in (chapter 9) .

Check the mobi l i ty of the loose o i l r ing.

Fig. 26: Turning in the bottom half of shell

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8.3.5.2 Fixed oi l r ing

SC.F, Check the corresponding numbers at the halves of the f ixed o i l r ing (60).

Place both halves around the shaf t and secure them against fa l l ing down.

Insert the guide bushes (62) .

Insert the screws (61) at the spl i t l ine. Use a lways new lock washers (64) below the screws.

NOTE!

An incorrect placed oi l r ing can damage the oi l scraper and inf luence in a negat ive way the sel f lubrication.

SC.F, T ighten the screws according to the torque rates g iven in (chapter 9) .

8.3.6. Top half of the shell

Apply some lubr icant (v iscos i ty ISO VG 46, p lease refer type plate) on the sl id ing surfaces the shaf t and shel l .

SCZ.. Check the connect ion of the hydrostat ic hose (165) at shel l and housing.

Check the cor responding numbers (F) at the halves of the shel l (40).

Place the top of the shel l on the shaf t . The engraved numbers are on the same s ide.

NOTE!

An incorrect ly placed shel l could jam the shaft . This leads to the damage of both shaft and bearing.

Place the top half of the shel l careful ly on the shaft . Do not damage the axial sl iding surfaces (or circular pads) of the top of the shel l .

Insert the taper p ins (42) .

Insert the screws (41) and t ighten them according to the torque rates g iven in (chapter 9) .

Check the gap between the halves of the shel l by us ing a feeler gauge.

NOTE!

The gap of the shel l spl i t l ine should be less than 0.05 mm.

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I f the spl i t l ine gap exceeds this value, disman-t le (chapter 7.3) both top and bottom hal f of the shell .

Rework the spli t l ine surfaces of top and bottom of the shel l w ith an oi l stone. Clean the shel l careful ly before mount ing.

SC.X. SC.Y.

Connect the hydrostat ic hose (165) to the screw jo int (169) and mount both in to the adapter (167) at the inner wal l o f the housing .

SC.L. Check the f ree movement of the loose o i l r ings (80) .

8.3.7. Closing of the bearing

Bearings size

SC... 63 and larger

Larger SC housings are f i t ted wi th an addi t ional o- r ing seal (19) at the spl i t l ine.

Cut the o-r ing (Fig . 27, red) to the cor rect length.

Place the o- r ing in to the gap in the housing .

Check the t rue a l ignment of the spl i t l ines of shel l (40) and housing (1) .

Check the accordance of the housing mark ings („A“) .

Clean the surfaces of the spl i t l ine and apply seal ing compound over the who le surfaces of the spl i t l ine.

Lower the top of the housing (3) ver t ica l ly on the bot -tom (2) unt i l the spl i t l ine of the housing is perfect ly c losed.

Bearing size

SC…36 and larger

Tap the housing l ight ly so that the shel l pos i t ions i tse lf in the housing in such a way that the bear ing bore axis and the shaf t axis are para l le l . The l ight tap generates a h igh f requent ly osc i l la t ion which br ings about a re-duct ion in the s tat ic f r ic t ion between the spher ica l sur -faces, thereby a l lowing adjustment of the shel l .

Insert the taper p ins (7) .

Mount the spl i t l ine bol t ing (5, 6) .

T ighten the screws according to the torque rates g iven in chapter 9 .

Fig. 27: Split line seal

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8.3.8. Oil scraper

SC.F. The o i l scraper is a par t of the in ternal lubr icat ion supply of the bear ing . By the rotat ion of the f ixed o i l r ing the lubr icant is convoyed to the top of the housing. There the o i l scraper guides the lubr icant to the s l id ing surfaces (p lease re-fer Fig. 06) .

SC.F., design 1

The o i l scrap-er (85) must be f reely moveable. I t must not jam or contact the f ixed o i l r ing (60).

Place the o i l scraper on the f ixed o i l r ing .

Mount the p late (72).

F ix the p late by us ing the screws (86) at the housing.

Adjust the d is tance between f ixed o i l r ing and o i l scraper to a d is tance of 0.2 to 0.5 mm by us ing the sel f - lock ing nut (77).


SC.F., design 2

The studs (75) are g lued in to the top of the housing.

Dismount the screw plug (78).

Push the spr ings (76) on the s tuds.

Push the o i l sc rap-er (71) over the s tuds.

Use the self - lock ing nuts (77) to adjust the c learance.

Use the bore of the screw plug (78) to check the c lear -ance between f ixed o i l r ing (60) and o i l scraper.

NOTE!

Adjust the gap between oi l scraper and f ixed oi l r ing to a clearance of 0.3 to 0.5 mm!

Fig. 28: Oil scaper design 1

Fig. 29: Oil scraper design 2

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In no case the oi l scraper is al lowed to contact the f ixed oi l r ing! Metal abrasives would destroy the bearing!

I f the gap between oi l scraper and thrust col lar is too large, the oi l supply may not be suff icient and thus leads to damages of the bearing.

Always use new hexagon nuts.

SC.F., design 2

Re-mount the screw plug af ter f in ish ing the adjustment work .


8.3.9. Rigid seal (Type 20)

I f other seal ing systems than the r ig id seal is insta l led you f ind h ints for these a l ternate ly systems in the appendix .

Check the accordance of the mark-ings ( „O“) at the halves of r ig id seal (120).

Clean the r ig id seal , especia l ly the f lange and the spl i t l ine sur fac-es.

Clean the f lange surfaces designed for mount ing the r ig id seal of the housing.

Fig. 30: Applying sealing compound to rigid seal

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Bearings size

SC... 56 and larger

Under specia l operat ing condi t ions larger bear ings are addi t ional ly f i t ted wi th o- r ings between r ig id seal and housing (Fig. 31, red.

Cut the o-r ing to the correct length.

Insert the o- r ing in to the provided gap.

Apply seal ing compound onto a l l surfaces of f lange and spl i t l ine (F ig. 30) .

Place the r ig id seal around the shaf t .

Jo in the halves of the r ig id by us ing screws (98) , guide bushes (100) and wash-er (99) at the spi l t l ine.

Push the complete r ig id seal in to the spigot bore of the housing.

Place the spl i t l ine of the r ig id seal and the housing in para l le l a l ignment .


bearing type „k“

The r ig id seal (120) of spher ica l insu-lated bear ings is mounted insulated f rom the housing (1) .

The insulat ion of the r ig id seal con-tents of insulat ing bushes (105) and insulat ing washers (107) between the housing and the fastening (Fig . 32).

Place the insulat ing washers un-der the washers (97) of the screws (96).

Push the insulat ing bushes in to the bores of the screws (96).

Fig. 31: O-ring in the gap of the rigid seal

Fig. 32: Insulation

Fig. 32: Adjusting the rigid seal

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Insert some screws (96) wi th washers (97) and, i f nec-essary, the insulat ion parts . F ix the screws hand- t ight .

Press the r ig id labyr inth seal s l ight ly f rom below against the shaf t .

Adjust the r ig id labyr inth seal in such a way that the c learance " f " between shaf t and r ig id labyr inth seal at both spl i t l ines is coming equal .

Mount a l l screws (96) and washers (97) and, i f neces-sary the insulat ion par ts.

8.3.10. Cooler

SCT.. SCW..

Clean the f langes of the cooler (13)

Clean the f langes of the cooler -keeping window in the housing.

Replace damaged seals .

Mount the cooler .

Fur ther h ints to the cooler insta l la t ion are g iven in chapter 5.4 .


NOTE!

RENK recommends carrying out a t ightness test accord-ing to DIN 50104.

8.3.11. Final work

Mount a l l e lect r ica l sensors (e.g . Level swi tches, tem-perature sensors) and devices (e.g . heaters) in the pro-vided bores.

Close a l l not used for equipment by screw plugs.

Connect a l l e lect r ica l dev ices (e.g. power supply, su-pervis ion moni tor ing, and heaters) .

WARNING!

The electr ical connect ion of the resistance thermome-ters must be executed according to the val id rules of the instal lat ion of electr ical equipments by authorized spe-cial ists.

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F i l l in lubr icant (chapter 6.5 ) .

SCT.. SCU..

Connect the c i rcu lat ion pump.

Check the f lawless funct ion.

SCX.. SCY..

Connect the lubr icat ion uni t .

Adjust the pressures and f low rates of the hydrostat ic jack ing uni t .

Check pressures and f low rates.

Check the f lawless funct ion.

Check the uni t for leakages. Plug any leakage immedi-ate ly.

Check the correct torque rates (chapter 9) of a l l screws, nuts p lugs, adapters and screwed connect ions.

The star t ing procedure is descr ipt in chapter 5.6

NOTE!

RENK AG recommends a test run after a complete disas-sembly of the bearing.

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9.1 Torque Rates/ Genera l

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9. Torque Rates

9.1. General

The standard values are according to the VDI recommenda-t ion 2230 page 1. They take in to account a scat ter ing about ± 33% of the results due to the t ightening method wi th a torque set t ing wrench referr ing to a 90 % charge of the yie ld l imi t tak ing in to account a tota l adhesion factor µ g e s= 0,14 (property class 8.8) .

9.1.1. Cap screws, nuts and screw nuts

Size M4 M5 M6 M8 M10 M12 M16 M20 M24 M30 M36

To rque [Nm ] 2 ,5 4 ,9 8 ,5 20 41 70 170 350 600 1200 2100

To rque [ l b f f t ] 1 .8 3 .6 6 15 30 52 125 258 443 885 1550

9.1.2. Screw plugs and adapters

Size G1 /8 G1 /4 " G3 /8 " G1 /2 " G3 /4 " G1" G1 1 /2 " G2 1 /2 "

To rque [Nm ] 10 26 34 60 85 130 280 410

To rque [ l b f f t ] 7 .5 20 25 44 63 96 207 320

9.1.3. Connections for pipes and hoses

Size G1 /8 G1 /4 " G3 /8 " G1 /2 " G3 /4 " G1" G1 1 /4 " G1 1 /2 "

To rque [Nm ] 20 50 75 130 250 350 600 800

To rque [ l b f f t ] 15 37 56 96 41 258 443 590

NOTE!

Use the fol lowing torque rates in case the nut thread is in i ron mater ial or thread inserts.

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10.1 Spare Parts Order ing/ In t roduct ion

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10. Spare Parts Ordering

10.1. Introduction

RENK bear ings have a long operat ion t ime wi thout any d is-rupt ions. However , should there be a problem, th is chapter of fers informat ion on how to order spare parts .

10.2. Spare parts ordering

Spare par ts must sat isfy the technical requirements st ipu lat -ed by RENK . Or ig inal spares suppl ied by RENK a lways meet these demands.

Please submit your spare par ts orders in wr i t ing . In urgent cases, the order can a lso be p laced via phone, te legraph or fax. However , such orders must be conf i rmed in wr i t ing wi th-out delay.

Please send your spare parts order to RENK agency located in your area or send i t d i rect ly to our main of f ices.

Spares orders should speci fy the fol lowing detai ls:

the order number

the type of the bear ing

This informat ion is g iven on the type plate at tached to each product .

the i tem number

the exact des ignat ion of the spare part

the ID – Code

This informat ion is inc luded in the parts l ist .

the required spare par ts quant i ty

the type of sh ipment des ired (e.g . by express, f re ight , a i r f re ight , messenger etc .)

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Appendix

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Appendix

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A. Appendix/ Technical Data

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A. Technical Data

Both bearings

total weight : 565 kg lubricant

quant ity in housing : 53 l viscosity : ISO VG 46

Bearing : SCTLK 40 - 400

RENK ID : 753944

Bearing : SCTLQ 40 - 400

RENK ID : 768681

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B. Appendix/ Type Plate

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Type SCTLK 40 - 400

Oil viscosity : ISO VG 46

Oil quantity : 53 l

Order-No./ Item : xxx xxx / xx - 11

Type SCTLQ 40 - 400

Oil viscosity : ISO VG 46

Oil quantity : 53 l

Order-No./ Item : xxx xxx / xx - 11

B. Type Plate

The f i rst l ine shows the designat ion of the bear ing .

The fo l lowing l ines show impor tant operat ing informat ion.

The last l ine of t the type p late shows:

xxx xxx Order number

xx Posi t ion of order

11 Year of product ion

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C. Appendix/ Additional Documents

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C. Additional Documents

To this Instruction Manual belong the fol lowing doc-uments. They were sent together with this Manual. SCTLK 40 - 400 Main drawing 27110195 Parts l ist 753944e SCTLQ 40 - 400 Main drawing 27117375 Parts l ist 768681e

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D. Appendix/ Additional Hints

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D. Additional Hints

This chapter gives information about additional equipment

Pre- lubricat ion device

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D. Appendix/ Additional Hints

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Pre-lubrication Device

RENK bear ings, designed for hor izonta l shaf t l ines, may operate wi th sel f lubr i -cat ion by o i l r ings or forced lubr icat ion by lubr icat ion uni ts .

The lubr icat ion of se l f - lubr icated bear-ings depends on the speed, among others. W hen star t ing the operat ion the lubr icant is concent rated in the o i l sump. Especia l ly dur ing operat ions be-low the t rans i t ion speed ( turn ing or set -t ing mode) no lubr icant is convoyed to the s l id ing surfaces, the wear increas-es. To prevent th is r isk and to reduce the f r ic t ion a pre-lubr icat ion device is mounted la tera l to the bear ing .

Use the pre- lubr icat ion uni t before operat ion

Pump lubr icant in to the o i l pockets of the shel l .

The o i l pockets are now f i l led wi th lubr icant and supply the s l id ing surfaces of the bear ing temporary wi th lubr icant .

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Documents

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