IEEE-810 Shaft Couplings and Shaft Runout

Recognized as anAmerican National Standard (ANSI)

The Institute of Electrical and Electronics Engineers, Inc.3 Park Avenue, New York, NY 10016-5997, USA

Copyright © 2001 by the Institute of Electrical and Electronics Engineers, Inc.All rights reserved. Published xx Month 2001. Printed in the United States of America.

Print: ISBN 1-55937-740-2 SH11445PDF: ISBN 0-7381-1101-5 SS11445

No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher.

IEEE Std 810-1987 (R2001)

IEEE Standard for Hydraulic Turbine and Generator Integrally Forged Shaft Couplings and Shaft Runout Tolerances

SponsorPower Generation Committeeof theIEEE Power Engineering Society

Reaffirmed 14 May 2001

Approved 10 September 1987

IEEE-SA Standards Board

Approved 2 February 1988

American National Standards Institute

Abstract: Methods for blah blah blah are also included.Keywords: sizing nickel-cadmium batteries, stationary applications

IEEE Standards

documents are developed within the Technical Committees of the IEEE Societies and the StandardsCoordinating Committees of the IEEE Standards Board. Members of the committees serve voluntarily and withoutcompensation. They are not necessarily members of the Institute. The standards developed within IEEE represent aconsensus of the broad expertise on the subject within the Institute as well as those activities outside of IEEE whichhave expressed an interest in participating in the development of the standard.

Use of an IEEE Standard is wholly voluntary. The existence of an IEEE Standard does not imply that there are no otherways to produce, test, measure, purchase, market, or provide other goods and services related to the scope of the IEEEStandard. Furthermore, the viewpoint expressed at the time a standard is approved and issued is subject to changebrought about through developments in the state of the art and comments received from users of the standard. EveryIEEE Standard is subjected to review at least once every Þve years for revision or reafÞrmation. When a document ismore than Þve years old, and has not been reafÞrmed, it is reasonable to conclude that its contents, although still ofsome value, do not wholly reßect the present state of the art. Users are cautioned to check to determine that they havethe latest edition of any IEEE Standard.

Comments for revision of IEEE Standards are welcome from any interested party, regardless of membership afÞliationwith IEEE. Suggestions for changes in documents should be in the form of a proposed change of text, together withappropriate supporting comments.

Interpretations: Occasionally questions may arise regarding the meaning of portions of standards as they relate tospeciÞc applications. When the need for interpretations is brought to the attention of IEEE, the Institute will initiateaction to prepare appropriate responses. Since IEEE Standards represent a consensus of all concerned interests, it isimportant to ensure that any interpretation has also received the concurrence of a balance of interests. For this reasonIEEE and the members of its technical committees are not able to provide an instant response to interpretation requestsexcept in those cases where the matter has previously received formal consideration.

Comments on standards and requests for interpretations should be addressed to:

Secretary, IEEE Standards Board345 East 47th StreetNew York, NY 10017USA

IEEE Standards documents are adopted by the Institute of Electrical and Electronics Engineers without regard towhether their adoption may involve patents on articles, materials, or processes. Such adoption does not assumeany liability to any patent owner, nor does it assume any obligation whatever to parties adopting the standardsdocuments.

iii

Foreword

(This Foreword is not a part of ANSI/IEEE Std 810-1987, IEEE Standard for Hydraulic Turbine and Generator Integrally ForgedShaft Couplings and Shaft Runout Tolerances.)

This standard details dimensions of integrally ßanged shafts and couplings, such as are used for the connectionbetween the generator and turbine in hydroelectric installations. It was originally developed by the American Societyof Mechanical Engineers (ASME) in 1928 and approved for publication by the American Standards Association(ASA) in 1932. A revised version, sponsored by ASME, was approved by ASA in 1947 and identiÞed asStandard B49.1.

Starting in 1953 the National Electrical Manufacturers Association (NEMA) undertook the sponsorship of thestandard and a revised issue was approved in 1967 by the United States of America Standards Institute (USA StandardsInstitute superseded the ASA in 1966).

NEMA elected to withdraw their sponsorship of Standard B49.1 in 1985, and in 1985 the Institute of Electrical andElectronics Engineers (IEEE) agreed to sponsor it. The Hydroelectric Power Sub-committee of the IEEE PowerGeneration Committee undertook the task of reviewing, revising, and reissuing the standard.

NEMA also sponsored Standards MG 5.1, Large Hydraulic-Turbine-Driven Synchronous Generators and ReversibleSynchronous Generator/Motor Units for Pumped Storage Installations and MG 5.2, Installation of Vertical Hydraulic-Turbine-Driven Generators and Reversible Generator/Motors for Pumped Storage Installations. Both of thesestandards contained tables concerning the ÒAllowable Runout Tolerance.Ó Since MG 5.1 (rescinded in 1982) and MG5.2 (rescinded in 1983) have been withdrawn by NEMA, these tolerance data have been included in this standard.

The working group wishes to acknowledge the contributions made to the standard by R. D. Handel and D. H.Hohnstein.

At the time this standard was approved, the members of the Working Group were as follows:

D. J. Parker

, Chair

F. L. BrennanD. L. Evans

P. S. Johrde J. M. QuigleyD. H. Thomas

iv

The following persons were on the balloting committee that approved this document for submission to the IEEEStandards Board:

W. W. AvrilM. S. BaldwinJ. H. BellackI. B. BerezowskiG. G. BoyleF. L. BrennanJ. B. CannonR. W. CantrellR. L. CastleberryE. F. ChelottiR. E. CottaM. L. CrenshawD. J. DamskerP. M. DavidsonD. Diamant

G. R. EngmannW. M. FennerA. H. FerberN. R. FriedmanD. I. GordenR. K. GuptaM. E. JackowskiW. D. JacksonJ. H. JonesC. E. KneeburgP. R. LandrieuJ. E. LeclairP. A. LewisG. L. LuriJ. T. MadillO. S. Mazzoni

D. R. McCabeG. R. MeloyM. W. MigliaroJ. T. NikolasR. E. PennC. R. PopeR. RamakumarR. J. ReimanD. E. RobertsE. P. RothongA. J. SpurginG. I. StillmanJ. E. Stoner, JrJ. B. SullivanR. Zweigler

v

When the IEEE Standards Board approved this standard on September 10, 1987, it had the following membership:

Donald C. Fleckenstein

, Chair

Marco W. Migliaro

, Vice Chair

Andrew G. Salem

, Secretary

James H. BeallDennis BodsonMarshall L. CainJames M. DalyStephen R. DillonEugene P. FogartyJay ForsterKenneth D. HendrixIrvin N. Howell

Leslie R. KerrJack KinnIrving KolodnyJoseph L. Koepfinger*Edward LohseJohn MayLawrence V. McCallL. Bruce McClungDonald T. Michael*

L. John RankineJohn P. RiganatiGary S. RobinsonFrank L. RoseRobert E. RountreeSava I. Sherr*William R. TackaberryWilliam B. WilkensHelen M. Wood

* Member emeritus

vi

CLAUSE PAGE

1. Introduction and Scope .......................................................................................................................................1

2. References ...........................................................................................................................................................1

3. Couplings ............................................................................................................................................................2

3.1 Sizes ........................................................................................................................................................... 23.2 Flange Dimensions..................................................................................................................................... 23.3 Bolt Holes .................................................................................................................................................. 73.4 Bolts and Nuts ............................................................................................................................................ 73.5 Jack Bolts ................................................................................................................................................... 73.6 Nut Guards ................................................................................................................................................. 7

4. Shaft Runout TolerancesÑFactory Check........................................................................................................12

4.1 Combined Turbine and Generator Shafts................................................................................................. 124.2 Combined Generator and Intermediate Shafts ......................................................................................... 124.3 Combined Turbine and Intermediate Shafts ............................................................................................ 124.4 Individual Generator Shaft....................................................................................................................... 124.5 Individual Turbine and Intermediate Shaft .............................................................................................. 124.6 Records..................................................................................................................................................... 12

Copyright © 1988 IEEE All Rights Reserved

1

An American National Standard

IEEE Standard for Hydraulic Turbine and Generator Integrally Forged Shaft Couplings and Shaft Runout Tolerances

1. Introduction and Scope

This standard applies to the dimensions of integrally forged shaft couplings and to the shaft runout tolerances. Shaftsand couplings included in this standard are used for both horizontal and vertical connections between generators andturbines in hydroelectric installations.

This standard does not include data on fabricated shafts, shaft stresses, and bolt tensioning. Industry experiencesuggests that the torque capacity of shafts having diameters greater than 72 inches is usually better provided byfabricated rather than forged shafts.

2. References

The following publications shall be used in conjunction with this standard:

[1] ANSI B18.2.1-1981, American National Standard Square and Hex Bolts and Screws, Inch Series.

1

[2] ANSI B18.2.2-1972, American National Standard Square and Hex Nuts.

[3] ANSI C50.10-1977, American National Standard Requirements for Synchronous Machines.

[4] ANSI C50.12-1981, American National Standard Requirements for Salient Pole Synchronous Generators andGenerator/Motors for Hydraulic Turbine Applications.

1

ANSI publications can be obtained from the Sales Department. American National Standards Institute, 1430 Broadway, New York, NY 10018.

2


IEEE Std 810-1987 IEEE STANDARD FOR HYDRAULIC TURBINE AND INTEGRALLY

3. Couplings

3.1 Sizes

The shaft diameters included in this standard range from 3 1/2 to 72 inches. Most shafts having integrally forgedcouplings are of special design rather than a stock product, and the greatest possible selection of sizes is required. Forthis reason, instead of following a series of preferred numbers, these standard shaft diameters are increased by 1/2 inchintervals, up to 9 inches; by 1 inch intervals, from 9 to 40 inches; and by 2 inch intervals, from 40 to 72 inches. Largeforgings are difÞcult to procure and shaft diameters larger than 72 inches are usually fabricated. Also, in these sizes,shaft stiffness and torque requirements are achieved at lower cost with fabricated rather than forged shafts.

3.2 Flange Dimensions

In determining the proportions of the couplings included in this standard, the diameter of the ßange, in each case, hasbeen kept as small as possible without reducing the strength of the coupling below that of the shaft in either torsion orbending.

Two values of ßange thickness are provided: one for shafts that may be subject to bending at the coupling; and anotherfor shafts not subject to bending at the coupling. However in the latter case, if the hydraulic thrust is unusually great,some value of ßange thickness between C and D should be used and coupling bolts of higher tensile strength steel maybe found necessary.

The ßange dimensions, Table 1, are based upon the following approximate proportions:

Flange Thickness (C) = 0.25

´

Shaft Diameter (A)

Flange Thickness (D) = 0.20

´

Shaft Diameter (A)

Rabbet Diameter (E) = 0.60

´

Shaft Diameter (A)

Relief Diameter (I) = Shaft Diameter (A) minus one inch

For matching shafts of different diameters, either the dimensions of the larger coupling shall be used for both halves,or the larger shaft shall be necked-down near the coupling to the diameter of the smaller shaft, and the dimensions ofthe smaller coupling shall be adopted for both.

For all vertical and horizontal shaft installations, the turbine shaft shall be provided with the male half coupling.


3

FORGED SHAFT COUPLINGS AND SHAFT RUNOUT TOLERANCES IEEE Std 810-1987

Tab

le 1

ÑC

ou

plin

g D

imen

sio

ns

(In

ches

)

Dia

met

erof

Shaf

t

Dia

met

erof

Fla

nge

Fla

nge

Thi

ckne

ss

Dia

met

erof

Rab

bet

(Tur

n)

Dia

met

erof

Rec

ess

(Bor

e)H

eigh

tof

Rab

bet

Abo

veF

ace

ofF

lang

e

Rab

bet

and

Rec

ess

Cha

mfe

r

Dep

thof

Rec

ess

Bel

owF

ace

ofF

lang

e

Rel

ief

on F

aces

of

Fla

nges

Rad

ius

ofF

illet

Rad

ius

ofC

orne

rSh

aft

Subj

ect

toB

endi

ng

Shaf

tno

tSu

bjec

tto

Ben

ding

E

Tol

eran

ce+

.000

0an

d

-

W

Tol

eran

ce

-

.000

0an

d

-

DIA

ME

TE

RD

EP

TH

See

note

(1)

VJ

AB

CD

FG

TH

IU

KL

3.5

7.5

.88

.88

2.12

50.0

005

2.12

50.0

005

.31

.06

.03

.38

2.5

4.62

6.62

.03

.19

.06

48.

121

12.

3750

.000

52.

3750

.000

5.3

1.0

6.0

3.3

83

5.25

7.25

.03

.19

.06

4.5

91.

121.

122.

7500

.000

52.

7500

.000

5.3

1.0

6.0

3.3

83.

55.

758

.03

.19

.06

510

.25

1.25

1.25

3.00

00.0

005

3.00

00.0

005

.31

.06

.03

.38

46.

389.

12.0

3.1

9.0

6

5.5

10.8

81.

381.

383.

2500

.000

53.

2500

.000

5.3

1.0

6.0

3.3

84.

57

9.75

.03

.25

.06

611

.51.

51.

53.

6250

.000

53.

5250

.000

5.3

1.0

6.0

3.3

85

7.62

10.3

8.0

3.2

5.0

6

6.5

12.7

51.

621.

623.

8750

.000

53.

6750

.000

5.3

1.0

6.0

3.3

85.

58.

1211

.38

.03

.25

.06

713

.51.

751.

754.

2500

.000

54.

2500

.000

5.3

1.0

6.0

3.3

86

8.88

12.1

2.0

3.3

8.0

9

7.5

141.

891.

754.

5000

.000

54.

5000

.000

5.3

1.0

6.0

3.3

86.

59.

3512

.62

.03

.38

.09

815

21.

884.

7500

.000

54.

7500

.000

5.3

1.0

6.0

3.3

87

10.1

213

.88

.03

.5.0

9

4



8.5

15.5

2.12

1.88

5.12

50.0

005

5.12

50.0

005

.31

.06

.03

.38

7.5

10.6

214

.38

.03

.5.0

9

916

.25

2.25

25.

3750

.000

55.

3750

.000

5.3

1.0

6.0

3.3

88

11.3

815

.12

.03

.62

.09

1018

2.5

2.25

6.00

00.0

005

6.00

00.0

005

.31

.06

.03

.38

912

.35

16.6

2.0

3.6

2.0

9

1119

.75

2.75

2.25

6.50

00.0

005

6.50

0.0

010

.38

.06

.03

.44

1014

.12

18.3

8.0

31

.12

1222

32.

57.

2500

.000

57.

250

.001

0.3

8.0

6.0

3.4

411

15.6

220

.38

.03

1.1

2

1323

.53.

252.

757.

7500

.000

57.

750

.001

0.3

8.0

6.0

3.4

412

17.1

221

.88

.03

1.25

.12

1425

3.5

38.

5000

.000

58.

500

.001

0.3

8.0

6.0

3.4

413

17.8

823

.12

.03

1.25

.12

1527

3.75

3.25

9.00

00.0

005

9.00

0.0

010

.38

.06

.03

.44

1419

.88

25.1

20.

31.

5.1

2

1629

43.

259.

5000

.000

59.

500

.001

0.3

8.0

6.0

3.4

415

21.1

226

.88

.03

1.5

.19

1730

4.25

3.5

10.2

500

.000

510

.250

.001

0.3

8.0

6.0

3.4

416

22.1

227

.88

.03

1.5

.19

1832

.54.

53.

7510

.750

0.0

005

10.7

50.0

010

.38

.06

.03

.44

1723

.88

30.1

2.0

31.

75.1

9

1934

4.75

411

.500

0.0

005

11.5

00.0

010

.38

.06

.03

.44

1825

.38

31.6

2.0

31.

75.1

9

2035

.25

54

12.0

000

.000

512

.000

.001

0.3

8.0

6.0

3.4

419

26.6

232

.88

.03

1.75

.25

2137

.25

5.25

4.25

12.5

00.0

010

12.5

00.0

010

.5.0

6.0

3.5

620

27.8

834

.62

.03

2.2

5

2239

5.5

4.5

13.2

50.0

010

13.2

50.0

010

.5.0

6.0

3.5

621

28.8

836

.12

.03

2.2

5

2340

5.75

4.75

13.7

50.0

010

13.7

50.0

010

.5.0

6.0

3.5

622

29.8

837

.12

.03

2.2

5

2442

64.

7514

.500

.001

014

.500

.001

0.5

.06

.03

.56

2331

.12

38.8

8.0

32

.25

2543

.56.

255

15.0

00.0

010

15.0

00.0

010

.5.0

6.0

3.5

624

32.6

240

.38

.03

2.5

.25

2645

.56.

55.

2515

.500

.001

15.5

00.0

01.5

.06

.03

.56

2533

.88

42.1

2.0

32.

5.2

5

2747

6.75

5.5

16.2

50.0

0116

.250

.001

.5.0

6.0

3.5

626

35.3

843

.62

.03

2.5

.25

2848

.57

5.75

16.7

50.0

0116

.750

.001

.5.0

6.0

3.5

627

36.8

845

.12

.03

3.2

5

Dia

met

erof

Shaf

t

Dia

met

erof

Fla

nge

Fla

nge

Thi

ckne

ss

Dia

met

erof

Rab

bet

(Tur

n)

Dia

met

erof

Rec

ess

(Bor

e)H

eigh

tof

Rab

bet

Abo

veF

ace

ofF

lang

e

Rab

bet

and

Rec

ess

Cha

mfe

r

Dep

thof

Rec

ess

Bel

owF

ace

ofF

lang

e

Rel

ief

on F

aces

of

Fla

nges

Rad

ius

ofF

illet

Rad

ius

ofC

orne

rSh

aft

Subj

ect

toB

endi

ng

Shaf

tno

tSu

bjec

tto

Ben

ding

E

Tol

eran

ce+

.000

0an

d

-

W

Tol

eran

ce

-

.000

0an

d

-

DIA

ME

TE

RD

EP

TH

See

note

(1)

VJ

AB

CD

FG

TH

IU

KL


5


2950

.57.

255.

7517

.500

.001

17.5

00.0

01.5

.06

.03

.56

2838

.12

46.8

8.0

33

.25

3051

.75

7.5

618

.000

.001

18.0

00.0

01.5

.06

.03

.56

2939

.12

47.8

8.0

33

.38

3153

.57.

756.

2518

.500

.001

18.5

00.0

01.6

2.1

2.0

6.6

930

40.1

249

.38

.03

3.3

8

3255

86.

519

.250

.001

19.2

50.0

01.6

2.1

2.0

6.6

931

41.6

250

.88

.03

3.3

8

3356

.58.

256.

7519

.750

.001

19.7

50.0

01.6

2.1

2.0

6.6

932

43.1

252

.38

.03

3.5

.38

3458

.25

8.5

720

.500

.001

20.5

00.0

01.6

2.1

2.0

6.6

933

44.8

854

.12

.03

3.5

.38

3560

8.75

721

.000

.001

21.0

00.0

01.6

2.1

2.0

6.6

934

45.8

855

.62

.03

3.5

.38

3661

.75

97.

2521

.500

.001

21.5

00.0

01.6

2.1

2.0

6.6

935

47.6

257

.38

.03

3.5

.38

3763

.59.

257.

522

.250

.001

22.2

50.0

01.6

2.1

2.0

6.6

936

48.6

258

.88

.03

3.5

.38

3864

.75

9.5

7.75

23.0

00.0

0123

.000

.001

.62

.12

.06

.69

3749

.88

60.1

2.0

33.

5.3

8

3966

.59.

757.

7523

.500

.001

23.5

00.0

01.6

2.1

2.0

6.6

938

50.8

861

.62

.03

3.5

.38

4068

108

24.0

00.0

0124

.000

.001

.62

.12

.06

.69

3952

.38

63.1

2.0

33.

5.3

8

4270

.25

10.5

08.

2525

.000

.001

25.0

00.0

01.6

2.1

2.0

6.6

941

53.6

264

.88

.03

4.3

8

4473

.12

11.0

09.

0026

.000

.001

26.0

00.0

01.6

2.1

2.0

6.6

943

55.7

567

.50

.03

4.3

8

4676

.00

11.5

09.

2527

.000

.001

27.0

00.0

01.6

2.1

2.0

6.6

945

57.8

870

.12

.03

4.3

8

4878

.88

12.0

09.

5028

.000

.001

28.0

00.0

01.6

2.1

2.0

6.6

947

60.0

072

.75

.03

4.3

8

5081

.75

12.5

010

.00

29.0

00.0

0129

.000

.001

.62

.12

.06

.69

4962

.12

75.3

8.0

34

.38

5284

.62

13.0

010

.50

30.0

00.0

0130

.000

.001

.62

.12

.06

.69

5164

.25

78.0

0.0

34

.38

5487

.50

13.5

010

.75

31.0

00.0

0131

.000

.001

.62

.12

.06

.69

5366

.38

80.6

2.0

34

.38

5688

.62

14.0

011

.25

32.0

00.0

0132

.000

.001

.62

.12

.06

.69

5568

.25

82.0

0.0

34

.38

5892

.50

14.5

011

.50

33.0

00.0

0133

.000

.001

.62

.12

.06

.69

5771

.38

85.6

2.0

34.

5.3

8

Dia

met

erof

Shaf

t

Dia

met

erof

Fla

nge

Fla

nge

Thi

ckne

ss

Dia

met

erof

Rab

bet

(Tur

n)

Dia

met

erof

Rec

ess

(Bor

e)H

eigh

tof

Rab

bet

Abo

veF

ace

ofF

lang

e

Rab

bet

and

Rec

ess

Cha

mfe

r

Dep

thof

Rec

ess

Bel

owF

ace

ofF

lang

e

Rel

ief

on F

aces

of

Fla

nges

Rad

ius

ofF

illet

Rad

ius

ofC

orne

rSh

aft

Subj

ect

toB

endi

ng

Shaf

tno

tSu

bjec

tto

Ben

ding

E

Tol

eran

ce+

.000

0an

d

-

W

Tol

eran

ce

-

.000

0an

d

-

DIA

ME

TE

RD

EP

TH

See

note

(1)

VJ

AB

CD

FG

TH

IU

KL

6



NO

TE

S:

1 Ñ

To

ensu

re th

at th

e ou

ter p

ortio

n of

the

coup

ling

face

mak

es c

onta

ct Þ

rst,

the

ßat s

urfa

ce o

f the

cou

plin

g fa

ce b

etw

een

diam

eter

s U

and

I m

ay b

e re

lieve

d as

sho

wn

in th

e fo

llow

ing

tabl

e:

2 Ñ

The

rad

ius

L m

ay b

e om

itted

fro

m th

e ßa

nge

whe

n a

nut g

uard

is f

urni

shed

.

3 Ñ

If

the

outs

ide

diam

eter

of

the

nut g

uard

is e

qual

to th

e ßa

nge

diam

eter

B, a

rab

bet r

eces

s m

ay b

e pr

ovid

ed in

the

ßang

e in

pla

ce o

f th

e ra

dius

L to

cen

ter

the

guar

d pr

oper

ly.

6095

.38

15.0

012

.00

34.0

00.0

0134

.000

.001

.62

.12

.06

.69

5973

.50

88.2

5.0

34.

5.3

8

6299

.25

15.5

012

.50

36.0

00.0

0136

.000

.001

.75

.19

.09

.81

6176

.62

91.8

8.0

35

.50

6410

2.12

16.0

012

.75

38.0

00.0

0138

.000

.001

.75

.19

.09

.81

6378

.75

94.0

0.0

35

.50

6610

6.00

16.5

013

.25

40.0

00.0

0140

.000

.001

.75

.19

.09

.81

6581

.88

98.1

2.0

35.

5.5

0

6810

8.88

17.0

013

.50

41.0

00.0

0141

.000

.001

.75

.19

.09

.81

6784

.00

100.

75

.03

5.5

.50

7011

1.00

17.5

014

.00

42.0

00.0

0142

.000

.001

.75

.19

.09

.81

6986

.88

103.

12

.03

6.5

0

7211

3.88

18.0

014

.50

43.0

00.0

0143

.000

.001

.75

.19

.09

.81

7189

.00

105.

75

.03

6.5

0

Cou

plin

g F

lang

e D

iam

eter

in I

nche

sR

elie

f of

Sur

face

of

Eac

h F

lang

e F

ace

Min

imum

Max

imum

0 to

25

0.00

00.

0005

Ove

r 25

to 5

00.

000

0.00

1

Ove

r 50

0.00

00.

001

Dia

met

erof

Shaf

t

Dia

met

erof

Fla

nge

Fla

nge

Thi

ckne

ss

Dia

met

erof

Rab

bet

(Tur

n)

Dia

met

erof

Rec

ess

(Bor

e)H

eigh

tof

Rab

bet

Abo

veF

ace

ofF

lang

e

Rab

bet

and

Rec

ess

Cha

mfe

r

Dep

thof

Rec

ess

Bel

owF

ace

ofF

lang

e

Rel

ief

on F

aces

of

Fla

nges

Rad

ius

ofF

illet

Rad

ius

ofC

orne

rSh

aft

Subj

ect

toB

endi

ng

Shaf

tno

tSu

bjec

tto

Ben

ding

E

Tol

eran

ce+

.000

0an

d

-

W

Tol

eran

ce

-

.000

0an

d

-

DIA

ME

TE

RD

EP

TH

See

note

(1)

VJ

AB

CD

FG

TH

IU

KL


7


3.3 Bolt Holes

Shafts 12 inches and larger in diameter shall have the bolt holes counterbored from the back of the ßange to facilitatebolt placement. The depth of this counterbore shall be such that the length (in each ßange) of the reamed portion S,Table 2, of the bolt hole is at least 0.8 times the nominal body diameter of the bolt.

3.4 Bolts and Nuts

The number and diameter of the bolts are based upon the assumption that the torque is transmitted only by shear in thebolts and that the combined stress in the bolts may safely be as much as 30% greater than the combined stress in theshaft. The diameter of the bolt body shall be determined from information given in Table 2.

NOTE Ñ Hexagon head, round head, or stud bolts with nuts at both ends, may be used for all bolt diameters up to and including5.25 inches at the discretion of the manufacturer. For bolts above 5.25 inches in diameter, the use of stud bolts with roundnuts is recommended. The dimensions. listed in Tables 1 and 2 of this standard for shaft diameters of 42 inches and largerwere based on this recommendation. For shaft diameters up to and including 9 inches, hexagon nuts were used todetermine ßange diameter. Heavy hexagon nuts were used for all other shaft sizes up to and including 40 inches.

The hexagon bolt heads (if used) shall correspond to the dimensions given in ANSI B18.2.1-1981 [1]

2

. Bolt heads shallbe of the same size as the nuts, or of the size corresponding to the body diameter of the bolts. In the latter case, one ßatshall be placed parallel to the periphery of the ßange to provide clearance for the nut guard.

The nuts shall correspond to the dimensions given in ANSI B18-2.2-1972 [2], and shall be of the sizes shown in Table2 of this standard.

Bolt heads and nuts beyond the sizes listed in ANSI B18.2.1-1981[1] and ANSI B18.2.2-1972 [2] shall bedimensioned in accordance with the formulas given in Appendix II of each of those standards. When used, round nutsor bolt heads shall have a diameter equal to or greater than the across ßat dimensions given in those standards.

The bolts shall be straight (not tapered) and shall be Þtted individually within the clearances speciÞed in Table 2. Thebolts and bolt holes shall be identiÞed with corresponding numbers to facilitate assembly.

The length of the bolts shall be such that they will project slightly beyond the nuts. The diameter of this projectingportion, which is provided for driving when the bolts are being assembled or removed, shall be smaller than the rootdiameter of the thread. The number of threads per inch shall be as given in Table 2.

3.5 Jack Bolts

The jack bolts shall be furnished with the female half coupling for both vertical and horizontal shafts.

The diameter and number of threads per inch shall be as indicated in Table 2. The length shall suit the thickness of thecoupling.

3.6 Nut Guards

In order to permit the installation of nut guards of the same outside diameter as the ßange (Table 1, Dimension B), aclearance Q has been provided between the edge of the ßange and the nuts.

NOTE Ñ The nut guard may also be allowed to overlap the ßange.

2

The numbers in brackets correspond to those of the references listed in Section 2.

8



Tab

le 2

ÑD

rilli

ng

Lay

ou

t an

d B

olt

Dim

ensi

on

s (I

nch

es)

Cou

plin

g B

olts

Bol

t H

ole

Cou

nter

bore

Dia

met

erof

Shaf

t

Dia

met

erof

Cou

plin

gB

olt

Cir

cle

Cen

ter

Dis

tanc

eof

Cou

plin

gB

olts

Num

ber

ofB

olts

Bol

tH

ole

Dia

met

er,

Nom

inal

Bol

t B

ody

Dia

met

erC

lear

ance

In F

it(S

ee n

ote)

Nut

sD

ista

nce

Bet

wee

nN

uts,

Min

Cle

aran

cefo

rN

utG

uard

Dia

met

erD

epth

Jack

Bol

ts

YR

Min

Max

Size

Thd

spe

rIn

ch

Fla

nge

Fla

nge

Min

Num

ber

Size

Thd

spe

rIn

ch

AM

NO

PQ

XC

D

3.5

5.62

52.

812

6.8

75.0

005

.001

.875

91.

30.1

8Ñ

ÑÑ

3.7

510

46.

250

3.12

56

.875

.0(0

5.0

01.8

759

1.61

.18

ÑÑ

Ñ3

.75

10

4.5

6.87

53.

438

61.

000

.000

5.0

011

81.

71.2

0Ñ

ÑÑ

3.7

510

57.

750

3.87

56

1.25

0.0

005

.001

1.25

81.

71.1

7Ñ

ÑÑ

3.7

510

5.5

8.37

54.

188

61.

250

.000

5.0

011.

258

2.02

.17

ÑÑ

Ñ3

.75

10

69.

000

3.44

48

1.25

0.0

005

.001

1.25

81.

28.1

7Ñ

ÑÑ

4.7

510

6.5

9.75

04.

875

61.

500

.000

5.0

011.

58

2.28

.20

ÑÑ

Ñ3

.75

10

710

.500

4.01

88

1.50

0.0

005

.001

1.5

81.

42.2

0Ñ

ÑÑ

4.7

510

7.5

11.0

004.

210

81.

500

.000

5.0

011.

58

1.61

.20

ÑÑ

Ñ4

.75

10


9


812

.000

4.59

28

1.75

0.0

005

.002

1.5

81.

99.2

0Ñ

ÑÑ

4.7

510

8.5

12.5

004.

784

81.

750

.000

5.0

021.

58

2.18

.20

ÑÑ

Ñ4

.75

10

913

.250

4.09

010

1.75

0.0

005

.002

1.5

81.

50.2

0Ñ

ÑÑ

4.7

510

1014

.500

4.48

110

2.00

0.0

005

.002

1.75

81.

45.2

3Ñ

ÑÑ

4.7

510

1116

.250

5.02

110

2.00

0.0

005

.002

1.75

81.

84.1

6Ñ

ÑÑ

4.7

510

1218

.000

5.56

210

2.25

0.0

005

.002

28

1.95

.19

2.38

1.5

4.7

510

1319

.500

5.04

712

2.25

0.0

005

.002

28

1.43

.19

2.38

1.25

.75

31

8

1420

.500

5.30

612

2.50

0.0

005

.002

2.25

81.

26.2

22.

621.

51

31

8

1522

.500

5.82

312

2.50

0.0

005

.002

2.25

81.

78.2

22.

621.

751.

253

18

1624

.000

6.21

112

2.75

0.0

01.0

032.

58

1.73

.26

2.88

1.75

13

18

1725

.000

6.47

012

2.75

0.0

01.0

032.

58

1.99

.26

2.88

21.

253

18

1827

.000

6.98

812

3.00

0.0

01.0

032.

758

2.08

.29

3.12

21.

253

18

1928

.500

6.34

114

3.00

0.0

01.0

032.

758

1.43

.29

3.12

2.25

1.5

41

8

2029

.750

6.61

914

3.00

0.0

01.0

032.

758

1.71

.29

3.12

2.5

1.5

41

8

2131

.250

6.95

314

3.25

0.0

01.0

033

81.

61.3

33.

382.

51.

54

18

2232

.500

7.23

114

3.50

0.0

01.0

033.

258

1.45

.36

3.62

2.5

1.5

41

8

2333

.500

7.45

314

3.50

0.0

01.0

033.

258

1.67

.36

3.62

2.75

1.75

41

8

2435

.000

7.78

814

3.75

0.0

02.0

043.

58

1.58

.39

3.88

31.

754

18

2536

.500

8.12

114

3.75

0.0

02.0

043.

58

1.91

.39

3.88

3.25

24

1.25

8

2638

.000

8.45

514

4.00

0.0

02.0

043.

758

1.81

.43

4.12

3.25

24

1.25

8

Cou

plin

g B

olts

Bol

t H

ole

Cou

nter

bore

Dia

met

erof

Shaf

t

Dia

met

erof

Cou

plin

gB

olt

Cir

cle

Cen

ter

Dis

tanc

eof

Cou

plin

gB

olts

Num

ber

ofB

olts

Bol

tH

ole

Dia

met

er,

Nom

inal

Bol

t B

ody

Dia

met

erC

lear

ance

In F

it(S

ee n

ote)

Nut

sD

ista

nce

Bet

wee

nN

uts,

Min

Cle

aran

cefo

rN

utG

uard

Dia

met

erD

epth

Jack

Bol

ts

YR

Min

Max

Size

Thd

spe

rIn

ch

Fla

nge

Fla

nge

Min

Num

ber

Size

Thd

spe

rIn

ch

AM

NO

PQ

XC

D

10



2739

.500

7.70

616

4.00

0.0

02.0

043.

758

1.06

.43

4.12

3.5

2.25

41.

258

2841

.000

7.99

916

4.00

0.0

02.0

043.

758

1.35

.43

4.12

3.75

2.5

41.

258

2942

.500

8.29

216

4.25

0.0

02.0

044

81.

21.4

64.

383.

752.

254

1.25

8

3043

.500

8.48

716

4.25

0.0

02.0

044

81.

41.5

84.

384

2.5

41.

258

3144

.750

8.73

116

4.50

0.0

02.0

044.

258

1.22

.62

4.62

42.

54

1.25

8

3246

.205

9.02

316

4.50

0.0

02.0

044.

258

1.51

.62

4.62

4.25

2.75

41.

258

3347

.750

8.29

218

4.50

0.0

02.0

044.

258

.78

.62

4.62

4.5

33

1.25

8

3449

.500

8.59

618

4.50

0.0

02.0

044.

258

1.09

.62

4.62

4.75

3.25

31.

258

3550

.750

8.81

218

4.75

0.0

03.0

054.

58

.87

.65

4.88

4.75

33

1.25

8

3652

.50

9.11

718

4.75

0.0

03.0

054.

58

1.17

.65

4.88

53.

253

1.25

8

3753

.750

9.33

418

5.00

0.0

03.0

054.

758

.96

.68

5.12

5.25

3.5

31.

258

3855

.000

9.55

118

5.00

0.0

03.0

054.

758

1.18

.68

5.12

5.5

3.75

31.

258

3956

.250

9.76

818

5.25

0.0

03.0

055

8.9

6.7

25.

385.

53.

53

1.5

8

4057

.705

10.0

2818

5.25

0.0

03.0

055

81.

22.7

25.

385.

753.

753

1.5

8

4259

.250

10.2

8418

5.50

0.0

03.0

055.

258

2.40

1.56

5.62

6.00

3.75

31.

58

4461

.625

10.7

0118

5.75

0.0

04.0

065.

508

2.45

1.62

5.87

6.25

4.25

31.

58

4664

.000

11.1

1318

6.00

0.0

04.0

065.

758

2.48

1.68

6.12

6.50

4.25

31.

58

4866

.375

11.5

2618

6.25

0.0

04.0

066.

008

2.52

1.75

6.37

6.87

4.37

31.

58

5068

.750

11.9

3818

6.50

0.0

04.0

066.

258

2.56

1.81

6.62

7.25

4.75

31.

58

5271

.125

12.3

5118

6.75

0.0

05.0

076.

508

2.60

1.87

6.87

7.50

5.00

31.

758

Cou

plin

g B

olts

Bol

t H

ole

Cou

nter

bore

Dia

met

erof

Shaf

t

Dia

met

erof

Cou

plin

gB

olt

Cir

cle

Cen

ter

Dis

tanc

eof

Cou

plin

gB

olts

Num

ber

ofB

olts

Bol

tH

ole

Dia

met

er,

Nom

inal

Bol

t B

ody

Dia

met

erC

lear

ance

In F

it(S

ee n

ote)

Nut

sD

ista

nce

Bet

wee

nN

uts,

Min

Cle

aran

cefo

rN

utG

uard

Dia

met

erD

epth

Jack

Bol

ts

YR

Min

Max

Size

Thd

spe

rIn

ch

Fla

nge

Fla

nge

Min

Num

ber

Size

Thd

spe

rIn

ch

AM

NO

PQ

XC

D


11


NO

TE

Ñ F

or c

oupl

ings

of

gene

rato

r sh

afts

to im

puls

e tu

rbin

e ru

nner

s or

run

ner

disk

s, th

e bo

lt-bo

dy d

iam

eter

cle

aran

ces

show

n in

the

tabl

e do

not

app

ly, s

ince

a m

etal

-to-

met

al Þ

tor

slig

ht d

rive

Þt i

s de

sire

d.

5473

.500

12.7

6318

7.00

0.0

05.0

076.

758

2.63

1.93

7.12

7.75

5.00

31.

758

5675

.125

11.7

5220

6.75

0.0

05.0

076.

508

2.00

1.87

6.87

8.50

5.75

41.

758

5878

.500

12.2

8020

7.00

0.0

05.0

076.

758

2.15

1.93

7.12

8.75

5.75

41.

758

6080

.875

12.6

5220

7.25

0.0

05.0

077.

008

2.15

2.00

7.37

9.12

6.12

41.

758

6284

.250

13.1

8020

7.50

0.0

05.0

077.

258

2.30

2.06

7.62

9.37

6.37

42.

08

6486

.625

13.5

5120

7.75

0.0

06.0

087.

508

2.30

2.12

7.87

9.75

6.50

42.

08

6690

.000

14.0

8020

8.00

0.0

06.0

087.

758

2.45

2.18

8.12

10.0

06.

754

2.0

8

6892

.375

14.4

5120

8.25

0.0

06.0

088.

008

2.45

2.25

8.37

10.2

56.

754

2.0

8

7095

.000

13.5

2022

8.00

0.0

06.0

087.

758

1.89

2.18

8.12

11.0

07.

504

2.0

8

7297

.375

13.8

5822

8.25

0.0

06.0

088.

008

1.85

2.25

8.37

11.2

57.

754

2.0

8

Cou

plin

g B

olts

Bol

t H

ole

Cou

nter

bore

Dia

met

erof

Shaf

t

Dia

met

erof

Cou

plin

gB

olt

Cir

cle

Cen

ter

Dis

tanc

eof

Cou

plin

gB

olts

Num

ber

ofB

olts

Bol

tH

ole

Dia

met

er,

Nom

inal

Bol

t B

ody

Dia

met

erC

lear

ance

In F

it(S

ee n

ote)

Nut

sD

ista

nce

Bet

wee

nN

uts,

Min

Cle

aran

cefo

rN

utG

uard

Dia

met

erD

epth

Jack

Bol

ts

YR

Min

Max

Size

Thd

spe

rIn

ch

Fla

nge

Fla

nge

Min

Num

ber

Size

Thd

spe

rIn

ch

AM

NO

PQ

XC

D

12



4. Shaft Runout TolerancesÑFactory Check

4.1 Combined Turbine and Generator Shafts

When the alignment of the combined turbine and generator shafts is checked at the factory, it shall be done by rotatingthe shafts in a lathe or on a vertical alignment table. The couplings should be match marked before disassembly. Theamount of runout, determined by the reading of an indicator held stationary with respect to the lathe or table, shall notexceed the tolerances of Table 3.

4.2 Combined Generator and Intermediate Shafts

The tolerances on the runout when checked in the same manner as described in 4.1 shall not exceed those of Table 4.

4.3 Combined Turbine and Intermediate Shafts

The tolerance on the runout when checked in the same manner described in 4.1 shall not exceed those of Table 5.

4.4 Individual Generator Shaft

When the shafts are to be aligned at a location other than the generatorÕs manufacturerÕs factory, the tolerances on therunout of the individual generator shaft when checked in the same manner as that described in 4.1 shall not exceedthose of Table 6.

4.5 Individual Turbine and Intermediate Shaft

Experience indicates that the prescribed tolerances on the combined shafts will usually be met if the runout, when theshafts are checked individually in the same manner as that described in 4.1, does not exceed the tolerances of Table 7for turbine shafts and Table 8 for intermediate shafts.

4.6 Records

A shaft alignment drawing shall be prepared showing the location of shaft check points and measurement values forthe information of the Þeld erector.


13


Table 3 ÑCombined Turbine and Generator Shaft Tolerances (No intermediate shaft used)

Item Point IndicatedTolerances

(Inches)

A Cylindrical surface of all guide bearing journals 0.003

B(1) Face of thrust block (if forged integral with shaft) before attachment of thrust bearing runner 0.00075

B(2) Face of thrust block (if not forged integral with the shaft) calculated from runout of face of retaining ring groove or shoulder on the shaft bearing against the thrust block

*

*If the thrust block is not forged integral with the shaft, it is not necessary toreassemble the block on the shaft for the shop check of the combinedgenerator and intermediate or turbine shaft.

0.0015

C Turbine water-seal surface 0.003

D Male or female portion of coupling at runner end of turbine shaft 0.0015

E Face of coupling (inside and outside the bolt circle) at runner end of turbine shaft 0.0015

F Face of coupling at generator end of generator shaft 0.0015

G Male or female portion of coupling at generator end of generator shaft 0.0015

14



Table 4 ÑCombined Generator and Intermediate Shaft Tolerances


(Inches)


B(1) Face of thrust block (if forged integral with shaft) before attachment of thrust bearing runner 0.00075

B(2) Face of thrust block (if not forged integral with the shaft) calculated from runout of face of retaining ring groove or shoulder on the shaft bearing against the thrust block

*

*If the thrust block is not forged integral with the shaft, it is not necessary toreassemble the block on the shaft for the shop check of the combinedgenerator and intermediate or turbine shaft.

0.0015

C Male or female portion of coupling at turbine end of intermediate shaft 0.001

D Face of coupling (inside and outside the bolt circle) at turbine end of intermediate shaft 0.001


15


Table 5 ÑCombined Turbine and Intermediate Shaft Tolerances


(Inches)


B Turbine water-seal surface 0.003

C Male portion of coupling at generator end of intermediate shaft 0.001

D Face of coupling (inside and outside the bolt circle) at generator end of intermediate shaft 0.001

E Male or female portion of coupling at runner end of turbine shaft 0.0015

F Face of coupling at runner end of turbine shaft 0.0015

16



Table 6 ÑGenerator Shaft

Item Point Indicated Tolerances(Inches)


B Face of thrust block before attachment of separate thrust bearing runner. Removable type thrust block must be in position for this reading 0.00075

C If the thrust bearing runner is separate, the thickness variation at constant radius, measured at inner and outer diameter 0.0005

D Female portion of coupling 0.001

E Face of coupling (inside and outside the bolt circle)

*

*Mark cylindrical surface of shaft flange with ÒHÓ to show high point of faceof coupling. The mark shall not interfere with future shaft indications or thefit of the coupling guard.

0.00075

F Outside cylindrical surface of coupling flanges or other reference surfaces 0.002

G Balance of shaft exclusive of indicated points (if machined) 0.015

H Male portion of shaft coupling (if part of shaft system) 0.001

J Face of coupling at generator end of generator shaft 0.001


17


Table 7 ÑTurbine Shaft


(Inches)


B Water seal surfaces 0.002

C Male or female portion of couplings 0.001

D Face of coupling (inside and outside the bolt circle) at generator end of turbine shaft

*

*Mark cylindrical surface of shaft flange with ÒHÓ to show high point of faceof coupling. The mark shall not interfere with future shaft indications or thefit of the coupling guard.

0.00075

E Face of coupling at runner end of turbine shaft 0.001

F Outside cylindrical surface of couplings/flanges or other reference surfaces 0.002

G Balance of shaft exclusive of indicated points (if machined) 0.015

18



Table 8 ÑIntermediate Shaft


(Inches)

A Male or female portion of couplings 0.001

B Face of couplings (inside and outside the bolt circle)

*

*Mark cylindrical surface of shaft flange with ÒHÓ to show high point offace of coupling. The mark shall not interfere with future shaft indications orthe fit of the coupling guard.

0.00075

C Outside cylindrical surface of coupling flanges or other reference surfaces 0.002

D Balance of shaft exclusive of indicated points (if machined) 0.015

IEEE-810 Shaft Couplings and Shaft Runout

Documents

Transcript of IEEE-810 Shaft Couplings and Shaft Runout