Gear Pitch Equivalents
| Table 7.1 Table of equivalent diametral, module and circular pitches. | |||
| Diametral Pitch | Circular Pitch in Inches |
Circular Pitch in Millimeters |
Module In Millimeters |
| 20* 24* 25.3995 31.4159 31.7653 32* 36.2857 42.3333 48* 50.8348 63.5950 64* 72* 80* 84.6198 96* 101.6697 120* 127.1899 200* |
.1571 .1309 .1237 .100* .0989 .0982 .0856 .0742 .0654 .0618 .0494 .0491 .0436 .0393 .0371 .0327 .0309 .0262 .0247 .0157 |
3.990 3.325 3.142 2.540 2.513 2.494 2.199 1.885 1.661 1.571 1.256 1.247 1.107 .998 .943 .831 .785 .665 .628 .399 |
1.2700 1.0583 1.0* .8085 .8* .7938 .7* .6* .5288 .5* .4* .3969 .3524 .3177 .3* .2645 .25* .2116 .2* .127 |
* Standard Pitches and Modules Offered by PIC Design. |
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| Table 7.2 Spur Gear Data | ||||
| Standard Stock Pitches |
Addendum | Dedendum | Whole Depth |
Circular Pitch |
| 20 24 1/10 32 48 64 72 80 96 120 200 |
.0500 .0417 .0318 .0313 .0208 .0156 .0139 .0125 .0104 .0083 .0050 |
.0579 .0520 .0402 .0395 .0270 .0208 .0187 .0170 .0145 .0120 .0080 |
.1079 .0937 .0720 .0708 .0478 .0364 .0326 .0295 .0249 .0203 .0130 |
.1571 .1309 .1000 .0982 .0654 .0491 .0436 .0393 .0327 .0262 .0157 |
| Table 7.3 Spur Gear Data For Standard
Modules (All dimensions in millimeters) |
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| Standard Module M |
Addendum M |
Dedendum* 1.16M |
Whole Depth 2.16M |
Circular Pitch pM |
| 0.2 0.25 0.3 0.4 0.5 0.6 0.7 0.8 1.0 |
0.200 0.250 0.300 0.400 0.500 0.600 0.700 0.800 1.000 |
0.234 0.292 0.350 0.467 0.584 0.701 0.818 0.935 1.166 |
0.434 0.541 0.650 0.866 1.085 1.300 1.519 1.735 2.167 |
0.628 0.785 0.943 1.256 1.571 1.885 2.199 2.513 3.142 |
*Based on clearance equaling one-sixth module. |
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