B-Protech John Crane

8/16/2019 B-Protech John Crane

http://slidepdf.com/reader/full/b-protech-john-crane 1/6

ProTechTM

The Full Ra ng e o f Bea ring Isola tors

Uniq ue Solutions fo r Exte nde d Bea ring Life



ProTechTM

The Full Range of Bearing Isolators

ProTechTM

TechnologyThe unique ProTech technology has been developed over

a num ber of years to provide total bearing protection by

ensuring zero leakage of lubricant to atm osphere and total

exclusion of contam inants from the bearing housing. Lip

seals are prim arily designed to keep lubricants in, and are

not alw ays effective at keeping contam inants out. Surveys

have show n that even a tiny am ount of w ater or dirt in the

lubricant can drastically reduce bearing operating life.

Unique DesignThe ProTech bearing isolator is based on a sim ple, unitized, tw o-piece design

m anufactured in chem ically resistant PTFE. The ProTech range consists of

a com plete fam ily of com plem entary designs that provides outstanding

perform ance for virtually any application. A pplications w ith pressurized,

flooded, or sealed bearing housings can now benefit from ProTech Types

FS and FN , w hich feature an internal lip seal, again offering benefits of

zero leakage and zero entry of contam inants.

ApplicationsH igh-grade PTFE com posites in the construction of the standard ProTech range ensure a w ide

range of operating capabilities, including high and low tem perature and extrem e chem ical

environm ents. The use of alternative PTFE fillers extends the physical properties and capabilities

into such areas as food production and pharm aceuticals.

ProTech bearing isolators can norm ally

replace existing sealing devices, w ithout

m odification to the equipm ent. ProTech

w ill extend equipm ent operating life across

these industries:

•Chem ical Processing

•Pulp and Paper

•O il and G as

•M ining

•Food and Beverage

•Pharm aceuticals

•Pow er G eneration

•Steel and A lum inum M anufacturing

•Utilities

Patents: 5,316,317; 5,431,414; 5,552 ,601; 5,735,530; other patents pending.



Wrap-Around Design–Type LX•Used w ith top-m ounted bearings on

vertical or angled shafts

•For severe w ash-dow n applications

Stepped Shaft Design–Type LM•Designed for electric m otors and stepped

shaft applications

Multiport Design–Type LD•Used w here the orientation of the

isolator cannot be guaranteed

•For contrarotating and rotating

housing applications

Severe Duty Design–Type SS•Ideal for high-speed double-row bearings

and severe oil-splash applications

Flush-Mounted Design–Type LN•Used w here space is restricted

ProTech High-Performance Bearing Isolators forStandard Oil and Grease-Lubricated Applications

Metal Construction–Type Millennium•Designed for higher speeds and tem peratures

General Purpose Design–Type LS•Flanged design

•Suitable for the m ajority of applications

UNITIZED DESIGN — ZERO LUBRICAN



Fully Split Isolator

Plummer/Pillow Block Bearing Isolator

Advanced Design Isolator

Flooded Design–Type FS(Type FN f lush-mou nt ed d esign also available)

Used for:

•Herm etically sealed bearing housings

•Flooded or forced lubrication

•Low er bearings on vertical/angled shafts

•O il m ist lubrication system s

•Fan-cooled bearing housings

Split Pillow Block Design–Type LB•Direct upgrade for conventional bearing seals

•Ideal for taconite applications

•Suitable for grease and oil lubrication

Split Design–Type SL•Easy to install w ithout dism antling equipm ent

•Direct replacem ent for sealing devicesin plum m er/pillow blocks

•M inim al external space neededfor installation

AKAGE — ZERO ENTRY OF CONTAMINANTS

ProTech Specialty Isolators



Features BenefitsTotal Exclusion of Contaminants Ensures longer bearing life.

from Bearing Housings

Zero Lubricant Leakage G reatly reduces required m aintenance

and environm ental pollution.

Unitized Two-Piece Design with Unique locking m echanism ensures com ponents

Positive Locking Mechanism cannot separate during installation or operation.

High Initial Axial Movement Capability Elim inates internal contact, a m ajor cause

of isolator problem s.

Manufactured from Engineered Accepted in all m ajor industries.

PTFE Composites PTFE is a low -friction, nonsparking m aterial,

w hich produces m inim al heat generation in

the unlikely event of contact (a claim not possible

w ith m etallic designs).

High chem ical resistance.

Manufactured to Suit Applications No m odifications required to rotating equipm ent

even w hen retrofitted.

Easy to Install No press or tools required, reducing the

possibility of dam age.

Component Standard Optional (for Food and Drug Appl ications)

Stator* G raphite-Filled PTFE Mineral-Filled PTFE

Rotor* G raphite-Filled PTFE Mineral-Filled PTFE

O -Rings Fluoroelastom er Silicone Elastomer

* Types FS and FN are supp lied w ith a stainless-steel rot or. Type M illennium is supp lied w ith a bronze stato r and rotor.

Materials of Construction

A pplies to all ProTech Bearing Isolators except w here stated.

Pressure 0 bar / 0 psi (Atm ospheric Pressure)

0.7 bar / 10 psi (for Types FS and FN)

Speed 0 to 25 m /s / 0 to 5000 fpmM odified designs are available at higher speeds

Temperature -40 to 120°C / -40 to 250°F

-40 to 200°C / -40 to 400°F (for Type M illennium )

Initial Axial Movement ± 0.8m m / ± 0.032 inches

Allowable TIR ± 0.5m m / ± 0.020 inches

Shaft Diameter 12 to 500m m / 0.5 to 20 inches

International Specifications •M eets and exceeds Severe D uty Electric M otor specifications

IEEE 841 for IP55 and IP56

•Com plies w ith A PI 610 8th edition

Please contact John Crane for app lications out side these limit s.

Performance Capabilities



North America

Morton Grove, Illinois USA

Tel: 1-847-967-2 400

Fax: 1-847-967-3915

1-800-SEALING

Europe, Middle East, AfricaSlough, UK

Tel: 44-1753-224 000

Fax: 44-1753-224224

Asia Pacific

Singapore

Tel: 65-222-916 1

Fax: 65-223-5035

For the nearest J ohn Crane location, please conta ct one of the locations above.

If the products fea tured will be use d in a potentially da ngerous a nd/or hazardous proces s, your John Crane repres entative should be cons ulted prior

to their selection and use . In the interest of continuous development, J ohn Crane Co mpa nies rese rve the right to alter des igns and sp ecifications

without prior notice. It is da ngerous to smoke w hile hand ling produc ts ma de from P TFE. Old a nd new P TFE products mus t not be incinerated.

© 2000 J ohn Crane Print 1/00 www.johncrane.com IS O Certified B-ProTech

John Crane

Latin America

Sã o P aulo, Brazil

Tel: 55-11-820-41 46

Fax: 55-11-829-8270

B-Protech John Crane

Documents

Transcript of B-Protech John Crane