A 20-tooth, 24-pitch worm gear made of mineral-filled nylon, black, with a pitch diameter of 0.833 inch, outer diameter of 0.917 inch, bore diameter of 0.187 inch, face width of 5/8 inch, hub diameter of 15/16 inch, hub length of 3/16 inch, and hub projection of 15/32 inch. It is designed to mesh with 24-pitch worms at a 90-degree shaft angle and has a 14-1/2° 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-N24020 |
| Product Name | 20:1 Gear Ratio, 20 Teeth, Worm Gear |
| Gear Type | Rack |
| Number of Teeth | 20 |
| Pressure Angle | 14.5° |
