An anti-backlash worm gear with 140 teeth, 64 pitch, and a 0.1873 inch bore, designed for right-hand operation at a 14.5° pressure angle. The gear features a bronze QQ-B-637 Alloy 464 tooth body and a 303 stainless steel hub with a clamp-type mounting style. It has a quadruple-threaded lead, as indicated by the 'S' thread code in the part number. Physical dimensions include a pitch diameter of 2.1875 inches and a face width of 0.1875 inch. Springs are made of 302 stainless steel, spring tempered.
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 | S1B83A-P064B140S |
| Product Name | 140 Teeth, 14.5° Pressure Angle, 0.1875 Face width Anti-backlash worm gear |
| Gear Type | Rack |
| Number of Teeth | 140 |
| Design | English |
| Pressure Angle | 14.5° |
| Features | Anti-backlash |
