Anti-backlash worm gears for 48-pitch applications feature bronze gears (QQ-B-637 Alloy 464), 303 stainless steel hubs, and 302 stainless steel springs, available in pin or clamp type with 1/8, 3/16, or 1/4 inch bores. The gear with 100 teeth and quadruple thread (25° P.A.) has a pitch diameter of 2.0833 inches and is suited for right-hand winding. Matching worms are specified for single (14-1/2° P.A.), double (20° P.A.), and quadruple (25° P.A.) threads.
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-P048B100Q |
| Product Name | 100 Teeth, 25° Pressure Angle, 0.1875 Face width Anti-backlash worm gear |
| Gear Type | Rack |
| Number of Teeth | 100 |
| Design | English |
| Pressure Angle | 25° |
| Features | Anti-backlash |
