A 1B 6-Z48020 is a bronze worm gear with 20 teeth, a pitch diameter of 0.417 inches, a 5/16-inch bore, and a 3/16-inch hub length, designed to mesh with a 48-pitch, right-hand, quadruple-thread steel worm. The gear has a 25° pressure angle and is part of a series with center distances matching the worm's lead of 0.2618 inch and lead angle of 14° 2'.
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 1B 6-Z48020 |
| Product Name | 5:1 Gear Ratio, 20 Teeth, Worm Gear |
| Gear Type | Rack |
| Number of Teeth | 20 |
| Pressure Angle | 25° |
