Anti-backlash worm gears for 48 pitch apply to applications requiring reduced backlash in power transmission. The gear is made of Bronze QQ-B-637 Alloy 464 with a 303 Stainless Steel hub and 302 Stainless Steel springs. Available in pin or clamp hub styles with 1/8, 3/16, or 1/4 inch bores, and set screw fasteners as specified. The gear has a 14-1/2° pressure angle for single-thread designs and a 20° pressure angle for double-thread designs. The gear with 70 teeth has a pitch diameter of 1.4583 inches and is only available with single or double threads, not quadruple. Other teeth counts, bore sizes, and thread types are available per catalog listings.
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 | S1B86A-C048B070Q |
| Product Name | 70 Teeth, 25° Pressure Angle, 0.1875 Face width Anti-backlash worm gear |
| Gear Type | Rack |
| Number of Teeth | 70 |
| Design | English |
| Pressure Angle | 25° |
| Features | Anti-backlash |
