Clear All
Component Component |
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![]() | Worm |
Gear Pitch Gear Pitch |
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System of Measurement System of Measurement |
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Bore Type Bore Type |
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![]() | Keyed |
OD OD | Show |
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OD OD | Hide |
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Pressure Angle Pressure Angle |
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Gear Type Gear Type |
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![]() | Worm |
Material Material |
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Worm Length Worm Length |
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Number of Thread Starts Number of Thread Starts |
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Thread Direction Thread Direction |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Teeth Fabrication Teeth Fabrication |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Teeth Heat Treatment Teeth Heat Treatment |
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About Gears
More
Metal Worms and Worm Gears

Worm and Gear Sold Separately
Worm gears use screw threads to make large reductions to shaft speed while transmitting motion at a right angle. They transmit motion from worm to gear and cannot be reversed. For gears and worms to mesh correctly, they must have the same pressure angle and pitch/module. These worms are compatible with plastic worm gears.
Speed ratio is the ratio by which output shaft speed is reduced. As speed decreases, torque increases.
For technical drawings and 3-D models, click on a part number.
Inch Worms

Worm with Keyed Bore
Keyway | |||||||||||||
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Gear Pitch | Pressure Angle | Worm Length | Gear Pitch Dia. | OD | For Shaft Dia. | Number of Thread Starts | Wd. | Dp. | Thread Direction | Teeth Heat Treatment | Teeth Fabrication | Each | |
Keyed Bore—1144 Carbon Steel | |||||||||||||
10 | 14 1/2° | 1 3/8" | 1 1/4" | 1.45" | 5/8" | 1 | 0.188" | 0.094" | Right Hand | Not Hardened | Not Ground | 000000000 | 000000 |