Compac IAP555A
dial bore gage indicator parts list - for reference only

 

This dial indicator can be used with all Compac bore gages with measuring range .5" and larger. For new bore gage indicators and detailed information on this dial bore gage, please see page 39.

These are the same parts used by Alina, Interapid and SPI dial bore gages made in Switzerland. The old Alina W28 indicator used different parts, all of which are obsolete.

 


You can place an
online order for any parts which have a price shown by clicking on the linked part number. Parts without pricing are no longer available from us while we conserve stock for our own repairs.

For information on Compac bore gage repair service, see page 30.

Dwg

Part no.

dial bore indicator (.0005") no longer sold separately

IAP543A

dial bore indicator (.0001") no longer sold separately

IAP555A

2

rack

041956

3

spring anchor

041314

4

rack guide

041170

5

return spring

041957

6

C-clip

042110

7

contact ø 3,9 mm

042154

8

bushing

041958

9

stop

041959

10

nut

041960

11

button guide

041965

12

release button

041966

13

spring

041967

14

E-clip

042026

15

screw for button guide

042836

18

movement: IAP555 (metric model)

043725

20

brass bearing ø 2.5/1.0 x 0.8 mm

042354

21

brass bearing ø 2.5/1.0 x 1.3 mm

042357

22

brass bearing ø 2.5/0.6 x 0.8 mm

042358

23

threaded bushing

042375

24

jewel ø2.5/0.6

042368

25

jewel ø2.5/1.0 x 0.8 mm (IAP555 / 555A / 556) for shock gear

042367

28

shock gear: IAP555 (metric model)

043726

29

shock gear: IAP555A

043737

32

second pinion: IAP555 (metric model)

043727

33

second pinion: IAP555A

043738

36

center pinion

041465

37

intermediate gear: IAP555 and IAP555A

043728

40

hair spring gear: IAP555 and IAP555A

043729

42

hair spring: IAP555 and IAP555A

043686

43

screw M1,6

041987

44

screw M1,7

041976

45

blue bezel for .0005” indicator

041950

45

red bezel for .0001” indicator

041952

45

chrome bezel – no longer available - see notes below

041961

46

friction spring

041325

47

nut for dial

041352

48

dial bushing

041353

51

dial: IAP555

044179

52

dial: IAP543A (.0005")

044171

52

dial: IAP555A (.0001")

044180

54

large hand

043691

55

small hand

041450

56

O-ring (48 x 1.2 mm)

042256

58

crystal (snap-on style)

041329

58

crystal 620-032 (flat plastic, old style)

041356

58

O-ring for snap-on crystal

042257

59

tolerance marker (left)

041451

59

tolerance marker (right)

041452

61

flat back (metal)

014600-13

62

screw for back (M3x4,5)

041995

63

end cover disc

042116

64

fastening screw (M4 x 0.7) 6 mm long**

042000

65

bezel clamp with 1.6 mm hole (old style)

041197

65

bezel clamp with 2 mm hole (new style)

041962

66

bezel lock knob for 1.6 mm screw (old style)

041198

66

bezel lock knob for 2 mm screw (new style)

041963

67

bezel lock screw 1.6 mm (old style)

041199

67

bezel lock screw 2 mm (new style)

041964

 

IMG0525The old style bezel lock (left, in photo) has a slotted screw and a thread diameter of 1.6 mm. The new style bezel lock (right, in photo) has a hex screw head and the thread diameter is 2 mm. Both styles are still available. They are not interchangeable. In either case, the lock consists of three elements: the screw, the knob and the plastic clamp.
 

The old style bezels and associated parts are no longer available: specifically the chrome bezel (#530-71), the tolerance markers (#530-80), the ring with crystal (#530-78) and the retaining ring (#530-082).

It's been more than 10 years since these parts were replaced with a color coded bezel and a snap-on crystal. However, the bezels for the bore gage indicators are different from the regular dial indicators. The colored bezels for the bore gage have 6.2 mm high rims. The regular indicator bezels are larger, at 8.2 mm. You can also recognize the bore gage bezels because they’ve been turned down and portions of the coloration are removed in the process.

These are the new parts (check the list above for pricing):

  • bezel (blue) .0005" #041950
  • bezel (red) .0001" #041952
  • snap-on crystal #041329
  • tolerance marker L #041451
  • tolerance marker R #041452
  • O-ring for crystal #042257

** 042000 is the conical screw which is used to attach the indicator to the measuring head. The new screws are 6 mm long but some older bore gages used 5 mm screws. It's easy to strip the thread in the housing by over-tightening this screw since the indicator body is brass, so use caution. It could be a costly mistake.

You will notice, upon closer examination, that this parts list also includes parts for the metric dial 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
 

www.longislandindicator.com

Long Island Indicator Service Inc
14 Sarah Drive
Hauppauge NY 11788 — USA


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This page's most recent revision: 6 April 2019
All Rights Reserved

Original photographs and content copyright 2019 by JWGrum

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