Bore Gages
Bore Gages — Split Ball Type SERIES 526 — for Extra Small Holes • This bore gage is designed to measure small holes of .3 to .7 in diameter. • For models where the dial indicator is optional, refer to page C-52 for recommended indicators. • Optional stand ( 215-120-10 ) is available for efficient measurement of multiple small holes.
Measurement example
C
526-123-20
SPECIFICATIONS
Inch Order No.
Dial indicator
Dial protection cover Setting ring
Range (in) Accuracy* (in) Repeatability* (in) Bore gage
526-103 526-104
526-103 526-104 526-103 526-104 526-103 526-104
0.3 - 0.4 0.00016 0.4 - 0.7 0.00024 0.3 - 0.4 0.00016 0.4 - 0.7 0.00024 0.3 - 0.4 0.00016 0.4 - 0.7 0.00024
Not supplied
Not supplied
526-122-20 526-123-20 526-119-20 526-120-20
2923AB-10 (Graduation: 0.0001 in) 2922AB (Graduation: 0.0005 in)
21DZA000
0.00008
Not supplied
21DZA000
Metric Order No. Range (mm) Accuracy* (μm) Repeatability* (μm) Bore gage
Dial indicator
Dial protection cover Setting ring
Measurement Principle
526-101 526-102
526-101 526-102 526-101 526-102 526-101 526-102
7 - 10
4 6 4 6 4 6
Not supplied
Not supplied
10 - 18
L
526-124-20 526-125-20 526-126-20 526-127-20
7 - 10
2109AB-10 (Graduation: 0.001 mm) 2046AB (Graduation: 0.01 mm)
2
Not supplied
10 - 18
21DZA000
7 - 10
Pin point
10 - 18
* Accuracy of the bore gage alone. Note: Setting rings are not supplied. Please purchase them separately if necessary. For details of the setting rings, refer to page C-53.
1/2·L
1/2·L
Contact Point
DIMENSIONS
Setting rings Refer to pages C-53 to C-56.
Inch: 23 Metric: 32 Inch: 28.5 Metric: 27
Unit: mm
Approx. 80
16.5 45
Contact point
L 10
L 11
6
M7 × 0.75
L 12
STANDARD ACCESSORIES Bore gage (Main body)
Contact point
Spanner
Marked No. Order No.
Order No.
Range
L 10
L 11
L 12
102469 102470 102471 102472 102473 102474 102454 102455 102456 102457 102458 102459 102460 102461
1 2 3 4 5 6 1 2 3 4 5 6 7 8
0.28 - 0.30 in /7.0 - 7.5 mm 0.30 - 0.32 in /7.5 - 8.0 mm 0.32 - 0.34 in /8.0 - 8.5 mm 0.34 - 0.36 in /8.5 - 9.0 mm 0.36 - 0.38 in /9.0 - 9.5 mm 0.38 - 0.40 in /9.5 - 10.0 mm 0.44 - 0.48 in /11 - 12 mm 0.48 - 0.52 in /12 - 13 mm 0.52 - 0.56 in /13 - 14 mm 0.56 - 0.60 in /14 - 15 mm 0.60 - 0.64 in /15 - 16 mm 0.64 - 0.68 in /16 - 17 mm
526-101 526-103
102148
1.8
40
29.2
0.40 - 0.44 in /10 - 11 mm 2.1
Spanner 102148
526-102 526-104
Unit: mm
102148
47
46
38
2.7
0.68 - 0.72 in /17 - 18 mm Note: Contact point is consumable part. Please replace it with new one when degrading of accuracy, operation, or measuring range.
Thickness: 1.5
C-33
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