A 20-tooth, 32-pitch worm gear made of acetal, designed to mesh with right-hand, 14.5° pressure angle worms at a 90° angle. It has a pitch diameter of 0.625 inch, an outer diameter of 0.687 inch, a bore diameter of 0.5 inch, a face width of 0.187 inch, and a hub diameter of 0.687 inch. The hub length is 0.25 inch, and it features a 5/32 inch hex bore. The gear is compatible with standard steel or brass worms of matching pitch and pressure angle.
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 1M 6-N32020 |
| Product Name | 20:1 Gear Ratio, 20 Teeth, Worm Gear |
| Gear Type | Rack |
| Number of Teeth | 20 |
| Pressure Angle | 14.5° |
