Bore Gages
Bore Gages — Split Ball Type SERIES 526 — for Extra Small Holes
Measurement example
• This bore gage is designed to measure small holes of .037 to .287 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.
C
Measurement Principle
L
Pin point
1/2·L
1/2·L
526-176-20
Contact Point
Setting Rings (Inch) Nominal size • Order No. 526-175-11 etc. 177-350 : 0.040 in 177-351 : 0.045 in 177-352 : 0.050 in 177-353 : 0.055 in 177-354 : 0.060 in • Order No. 526-165-11 etc. 177-355 : 0.07 in 177-356 : 0.08 in 177-357 : 0.09 in 177-358 : 0.10 in 177-359 : 0.11 in 177-360 : 0.12 in 177-361 : 0.13 in 177-362 : 0.14 in 177-363 : 0.15 in • Order No. 526-155-11 etc. 177-364 : 0.16 in 177-365 : 0.18 in 177-366 : 0.20 in 177-367 : 0.22 in 177-368 : 0.24 in 177-369 : 0.26 in 177-370 : 0.28 in Setting Rings (Metric) Nominal size • Order No. 526-170-11 etc. 177-220 : 1.0 mm 177-222 : 1.1 mm 177-225 : 1.2 mm 177-227 : 1.3 mm 177-230 : 1.4 mm • Order No. 526-160-11 etc. 177-236 : 1.75 mm 177-239 : 2.00 mm 177-242 : 2.25 mm 177-208 : 2.50 mm 177-246 : 2.75 mm 177-248 : 3.00 mm 177-250 : 3.25 mm 177-252 : 3.50 mm 177-255 : 3.75 mm • Order No. 526-150-11 etc.
SPECIFICATIONS
Inch Order No.
Repeatability* (in)
Dial protection cover
Range (in)
Accuracy* (in)
Bore gage 526-175-10 526-165-10 526-155-10 526-175-10 526-165-10 526-155-10 526-175-10 526-165-10 526-155-10 526-175-10 526-165-10 526-155-10 Bore gage 526-170-10 526-160-10 526-150-10 526-170-10 526-160-10 526-150-10 526-170-10 526-160-10 526-150-10 526-170-10 526-160-10 526-150-10 526-170-10 526-160-10 526-150-10 526-170-10 526-160-10 526-150-10
Dial indicator
Setting ring
526-175-10 0.037 - 0.061 0.00016 526-165-10 0.059 - 0.156 0.00016 526-155-10 0.146 - 0.287 0.00024 526-176-20 0.037 - 0.061 0.00016 526-166-20 0.059 - 0.156 0.00016 526-156-20 0.146 - 0.287 0.00024 526-175-11 0.037 - 0.061 0.00016 526-165-11 0.059 - 0.156 0.00016 526-155-11 0.146 - 0.287 0.00024 526-176-21 0.037 - 0.061 0.00016 526-166-21 0.059 - 0.156 0.00016 526-156-21 0.146 - 0.287 0.00024
Not supplied
Not supplied
Not supplied
2923AB-10 (Graduation: 0.0001 in)
21DZA000
0.00004
Not supplied
Not supplied
Supplied
2923AB-10 (Graduation: 0.0001 in)
21DZA000
Metric Order No. 526-170-10 526-160-10 526-150-10 526-172-20 526-162-20 526-152-20 526-173-20 526-163-20 526-153-20 526-170-11 526-160-11 526-150-11 526-172-21 526-162-21 526-152-21 526-173-21 526-163-21 526-153-21
Range (mm)
Accuracy* (μm)
Repeatability* (μm)
Dial protection cover
Dial indicator
Setting ring
0.95 - 1.55 1.50 - 3.95 3.70 - 7.30 0.95 - 1.55 1.50 - 3.95 3.70 - 7.30 0.95 - 1.55 1.50 - 3.95 3.70 - 7.30 0.95 - 1.55 1.50 - 3.95 3.70 - 7.30 0.95 - 1.55 1.50 - 3.95 3.70 - 7.30 0.95 - 1.55 1.50 - 3.95 3.70 - 7.30
4 4 6 4 4 6 4 4 6 4 4 6 4 4 6 4 4 6
Not supplied
Not supplied
2109AB-10 (Graduation: 0.001 mm)
21DZA000
Not supplied
2046AB (Graduation: 0.01 mm)
21DZA000
1
Not supplied
Not supplied
2109AB-10 (Graduation: 0.001 mm)
Supplied
21DZA000
2046AB (Graduation: 0.01 mm)
21DZA000
177-204 : 4.0 mm 177-257 : 4.5 mm 177-205 : 5.0 mm 177-263 : 5.5 mm 177-267 : 6.0 mm 177-271 : 6.5 mm 177-275 : 7.0 mm
* Accuracy of the bore gage alone. Note: Setting rings are not supplied with some models. Please purchase them separately if necessary. For details of setting rings, refer to page C-53.
C-31
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