A worm gear with 85 teeth and a 0.2498 in. bore, designed to mesh with a 64-pitch, 14-1/2° pressure angle worm; made from bronze QQ-B-637 Alloy 464 with a right-hand double thread configuration, and a pitch diameter of 1.3281 in. The gear is part of a series with 64-pitch, inch-based worm and worm gear pairs, supplied with standardized bore sizes and thread counts. This variant is not directly listed, but its combination falls within the series' documented range of 60 to 120 teeth and double-threaded options.
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 | S1C83Z-P064B085D |
| Product Name | 42.5:1 Gear Ratio, 85 Teeth, Worm Gear |
| Gear Type | Rack |
| Number of Teeth | 85 |
| Pressure Angle | 14.5° |
| Material | Bronze; AGMA Q10 / Bronze |
