Cold Formed Spur Gears: Custom Spur Gears
Need a custom spur gear? Call Grob Inc. We manufacture a variety of standard cold formed bar stock and custom cold formed stock, either to our specifications or to yours. For custom, simply upload your drawing through our website and we’ll contact you with a solution. Whether you use Grob standard stock or custom, you are getting a trusted name in materials and workmanship for your spur gear application. (Need help Reverse Engineering Your Spur Gear?)
Custom Spur Gears
Our custom spur gear capabilities allow for modifications to the following design elements:
- Major diameter, or outside diameter
- Minor diameter, or inside diameter
- Backlash, which allows for lubrication and thermal expansion without significantly altering the functionality of the machinery.
- Involute tooth profile
Cold Formed Spur Gears: Stock & Custom
| Gear Name | OD | Root | Pitch Dia | Measurement Over Pins | Pins |
|---|---|---|---|---|---|
| 20-32-12 | 0.436 | 0.299 | 0.375 | 0.442 | 0.054 |
| 20-32-20 | 0.686 | 0.549 | 0.625 | 0.692 | 0.054 |
| 20-32-32 | 1.061 | 0.924 | 1.000 | 1.070 | 0.054 |
| 20-32-40 | 1.311 | 1.174 | 1.250 | 1.320 | 0.054 |
| 20-24-12 | 0.581 | 0.399 | 0.500 | 0.593 | 0.072 |
| 20-24-16 | 0.748 | 0.566 | 0.667 | 0.760 | 0.072 |
| 20-24-20 | 0.915 | 0.733 | 0.833 | 0.927 | 0.072 |
| 20-24-24 | 1.081 | 0.900 | 1.000 | 1.092 | 0.072 |
| 20-20-12 | 0.698 | 0.479 | 0.600 | 0.710 | 0.086 |
| 20-20-16 | 0.898 | 0.679 | 0.800 | 0.910 | 0.086 |
| 20-20-20 | 1.098 | 0.879 | 1.000 | 1.111 | 0.086 |
| 20-16-12 | 0.873 | 0.600 | 0.750 | 0.889 | 0.108 |
| 20-16-16 | 1.123 | 0.850 | 1.000 | 1.140 | 0.108 |
| 20-16-20 | 1.373 | 1.100 | 1.250 | 1.390 | 0.108 |
| 20-16-24 | 1.623 | 1.350 | 1.500 | 1.641 | 0.108 |
| 20-12-12 | 1.164 | 0.800 | 1.000 | 1.186 | 0.144 |
| 20-12-16 | 1.498 | 1.134 | 1.333 | 1.520 | 0.144 |
| 20-12-24 | 2.165 | 1.801 | 2.000 | 2.189 | 0.144 |
Need a custom spur gear? Call Grob Inc. We manufacture a variety of standard cold formed bar stock and custom cold formed stock, either to our specifications or to yours. For custom, simply upload your drawing through our website and we’ll contact you with a solution. Whether you use Grob standard stock or custom, you are getting a trusted name in materials and workmanship for your spur gear application. (Need help Reverse Engineering Your Spur Gear?)
Custom Spur Gears
- Modified major diameters
- Modified minor diameters
- Modified backlash
- Modified involute profiles
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