|
| Industry-leading tolerances |
Thanks to our tool-building and unique straightening
capabilities, we are able to deliver remarkable standard and
premium linear and geometric tolerances.
Standard tolerances are those which can be expected for
production parts. Repeatability of all dimensions of the casting
is assured. Premium tolerances are those which provide for
tighter control of selected dimensions. As premium tolerances
necessitate added operations, excessive use of these
requirements in non-critical areas should be avoided to keep
casting costs low.
LINEAR TOLERANCES
|
DIMENSIONS |
NORMAL
TOLERANCES |
PREMIUM
TOLERANCES |
|
Inches |
Millimiters |
Inches |
Millimiters |
Inches |
Millimiters |
| up
to 1" |
25 |
±.005"
|
±.130 |
±.003"
|
±.075
|
| up
to 2" |
50 |
±.010" |
±.255 |
±.005" |
±.130 |
| up
to 3" |
75 |
±.015" |
±.380 |
±.010" |
±.255 |
| up
to 4" |
100 |
±.020" |
±.508 |
±.013" |
±.330 |
| up
to 5" |
130 |
±.025" |
±.635 |
±.016" |
±.406 |
| up
to 6" |
150 |
±.030" |
±.762 |
±.019" |
±.482 |
| up
to 7" |
180 |
±.035" |
±.889 |
±.021" |
±.533 |
| up
to 8" |
205 |
±.040" |
±1.01 |
±.023" |
±.584 |
| up
to 9" |
230 |
±.045" |
±1.14 |
±.025" |
±.635 |
| up
to 10" |
255 |
±.050" |
±1.27 |
±.027" |
±.685 |
| up
to 11" |
279 |
±.055" |
±1.39 |
±.029" |
±.736 |
| up
to 12" |
304 |
±.060" |
±1.52 |
±.031" |
±.787 |
| up
to 13" |
330 |
±.065" |
±1.65 |
±.033" |
±.838 |
| up
to 14" |
355 |
±.070" |
±1.77 |
±.035" |
±.889 |
| up
to 15" |
381 |
±.075" |
±1.90 |
±.037" |
±.939 |
| up
to 16" |
406 |
±.080" |
±2.03 |
±.039" |
±.990 |
| up
to 17" |
432 |
±.085" |
±2.15 |
±.040" |
±1.01 |
| up
to 18" |
457 |
±.090" |
±2.28 |
±.042" |
±1.06 |
| up
to 19" |
482 |
±.095" |
±2.41 |
±.044" |
±1.11 |
| up
to 20" |
508 |
±.100" |
±2.54 |
±.046" |
±1.16 |
| up
to 21" |
533 |
±.105" |
±2.66 |
±.048" |
±1.21 |
| up
to 22" |
559 |
±.110" |
±2.79 |
±.050" |
±1.27 |
| up
to 23" |
584 |
±.115" |
±2.92 |
±.052" |
±1.39 |
| up
to 24" |
610 |
±.120" |
±3.04 |
±.054" |
±1.42 |
GEOMETRIC TOLERANCES
| |
|
STANDARD
TOLERANCES
|
PREMIUM TOLERANCES
|
|
|
ANGULARITY |
+1° |
+.5°
|
|
|
STRAIGHTNESS |
Up
to 2" |
0.10 |
Up
to
2" |
.006 |
| 2.1
- 5" |
0.020 |
2.1
- 5" |
0.012 |
|
|
FLATNESS |
5.1
- 10" |
0.040 |
5.1
- 10" |
0.020 |
| 10.1
- 15" |
0.060 |
10.1
- 15" |
0.035 |
|
|
SQUARENESS |
Up
to 2" |
0.010 |
Up
to 2" |
0.005 |
| 2.1
- 5" |
0.030 |
2.1
- 5" |
0.010 |
| 5.1
- 10" |
0.050 |
5.1
- 10" |
0.018 |
| 10.1
- 15" |
0.080 |
10.1
- 15" |
0.035 |
|
|
PARALLELISM |
Up
to 2" |
0.010 |
Up
to 2" |
0.005 |
| 2.1
- 5" |
0.030 |
2.1
- 5" |
0.010 |
| 5.1
- 10" |
0.050 |
5.1
- 10" |
0.018 |
| 10.1
- 15" |
0.080 |
10.1
- 15" |
0.035 |
|
|
PROFILE |
Should
be equal to double the linear tolerance being allowed.
(See Linear Tolerance Table ) |
| |
HOLES |
See
General Linear Tolerances |
|
|
