page 83

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Compac dial bore gage parts list
Model IA3A (2 to 6") and IA4A (2 to 12") measuring heads.

this page is for reference only

This page is for reference only. Spare parts are not for sale. For repair service, refer to page 30.

These are the same parts used by Interapid, Alina and SPI models 20-019-6, 20-021-2, 20-018-8, and 20-020-4 dial bore gages made in Switzerland.

The parts for the dial indicator used with this bore gage are shown on a separate list. See page 84.

 



Spare parts for Compac dial bore gages are no longer available from us. You are welcome to send the gages for a no-cost repair evaluation, if you wish.

All parts are made in Switzerland unless otherwise noted.

Dwg

Order Part no.

US$

2-12" measuring head with box and all plugs (see info)

IA4A

2-6" measuring head with box and all plugs (see info)

IA3A

kit transforms 2-6" into 2-12"

IA-34

0

wooden box for 2-6" and 2-12" (on request)

042389

1

measuring head only (allow 4-6 months for delivery)

044123

5

set screw (5 mm long)

041978

6

vertical rack

041893

7

flat contact

042139

8

spring

041894

9

centering washer

041895

10

guide ø1,95

042035

11

horizontal rack (specify size from 3.65 to 3.77)

041896

12

lower guide

041897

15

sliding contact

044125

16

protection plug

041898

17

bearing holder with bushing 042034 installed

044126

18

screw for cover

041977

19

brass bushing for 044126

042034

20

pinion

042041

21

screw (cone head)

043197

22

see drawing part 29

23

extension O

044127

inquire

24

extension A

041900

inquire

24

extension B

041901

inquire

25

contact #1 (plug) length .5" approx.

044128

inquire

25

contact #2 (plug) length .75" approx.

044129

inquire

25

contact #3 (plug)

044130

inquire

25

contact #4 (plug)

044131

inquire

25

contact #5 (plug)

044132

inquire

chart for plug and extension combinations (see below)

041910

27

clamp (unfinished; see information below)

040406

28

nut for #040406

041903

29

centering sled (carbide) for 2-6"

044134

29

centering sled (steel) for 2-6"

044133

31

screw for centering sled

041906

32

spring for centering sled

041907

33

wrench for contacts (made in Germany)

042066

34

contact holder only

041908

34

holder with 5 contacts

044136

inquire

37

tube (4/IA.3-37) not shown

38

rod (2/IA.3-38) for tube #37 not shown

041912

40

round (lower) contact for rod #38 not shown

042140

41

flat (upper) contact (2/NC.4-7) for rod #38 not shown

42

depth extension (100 mm)

RI-100

50

extension C with screw for 2-12"

044138

51

screw for 2-12" #044138

041914

52

extension D for 2-12"

041915

53

centering sled (carbide) for 2-12"

044140

53

centering sled (steel) for 2-12"

044139

Compac bore gage clamp important information

boregageclamp83

Sorry, we are no longer able to supply this spare part but you can send the bore gage to us for customized installation.

The square shaped clamp on the 2-6" and 2-12" bore gage models which hold the extensions in place is part #040406 (see drawing item 27). This clamp is sent unfinished, which means it doesn't have an inside thread. The reason is: the thread needs to be custom cut to match the thread already in your gage head. You will need a metric M12x1 tap.

Centering sled

 

A new centering sled is not necessarily easy to install. It looks like it should simply slide into the two holes but chances are that the posts won't be aligned and your sled will jam. Don't force anything and for heaven's sake don't try to bend the posts. They'll snap off. These sleds are custom fit on new gages and that's why you'll run into trouble trying to replace them. If the fit is tight, try a bit of emery and see if that works. Check that there are no burrs. Advance carefully and you'll probably succeed. The other, and better option, is to send it to us for installation.

Diameter in inches

Plug No.

with extension A

with extension B

with ext C+A

with ext C+B

with ext C+D

0

2" to 2.4"

1

2.4" to 2.8"

4.4" to 4.8"

6.4" to 6.8"

8.4" to 8.8"

10.4" to 10.8"

2

2.8" to 3.2"

4.8" to 5.2"

6.8" to 7.2"

8.8" to 9.2"

10.8" to 11.2"

3

3.2" to 3.6"

5.2" to 5.6"

7.2" to 7.6"

9.2" to 9.6"

11.2" to 11.6"

4

3.6" to 4"

5.6" to 6"

7.6" to 8"

9.6" to 10"

11.6" to 12"

5

4" to 4.4"

6" to 6.4"

8" to 8.4"

10" to 10.4"

12" to 12.4"

The chart above shows the various combinations of plugs (contacts) and extensions which will give you the measuring ranges for both 2" to 6" and 2" to 12" models. A similar chart is supplied in the box of new inch-reading bore gages.



 

 

LONG ISLAND INDICATOR REPAIR MANUALS

BesTest and TesaTast Indicator Repair Manual … page 177
Starrett 711 Last Word Indicator Repair Manual … page 199
Interapid Indicator Repair Manual … page 208
Compac Test Indicator Repair Manual … page 194
Mitutoyo Test Indicator Repair Manual … page 102

New! Companion Reference Guide for Test Indicators … page 178
 

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14 Sarah Drive — Hauppauge NY 11788 — USA


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This page's most recent revision: 22 MARCH 2018
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Original photographs and content copyright 2018 by JWGrum

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