A right-hand worm gear machined from cast nylon, with a module of 1, 20 teeth, a pitch diameter of 20 mm, a bore diameter of 6 mm with H7 tolerance, a face width of 10 mm, and a hub diameter of 16 mm. The gear is designed for use with a matching right-hand steel worm and has a pressure angle of 20°, consistent with the module 1 series specifications.
A worm gear pair, or worm gear set, consists of two gears: the worm, which resembles a spiral screw, and the worm gear (aka, worm wheel).
For the pair to mesh, the worm and worm gear must have the same pressure angles, modules, and lead directions (left- or right-hand).
A worm revolves on a shaft that’s perpendicular to the worm gear and the shaft angle is typically 90°. Because the teeth gradually mesh as the worm rotates, there is low noise and low vibration.
For more about worm gear mesh geometry follow this link.
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| Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|
| Product Category | Gears |
| Product Number | A 1P 6MYH10R20 |
| Product Name | 20:1 Gear Ratio, 20 Teeth Worm Gear |
| Gear Type | Rack |
| Number of Teeth | 20 |
| Pressure Angle | 20° |
