A 64-pitch worm gear with 85 teeth and a 0.2498 in. bore, paired with a double-threaded worm, is part of a bronze (QQ-B-637 Alloy 464) and 303 stainless steel gear set designed for right-hand operation at a 14.5° pressure angle. The gear has a pitch diameter of 1.3281 in. and meshes with a worm having a 0.09817 in. lead and a 3°35' lead angle. The gear set is intended for inch-based applications with a 42.5:1 reduction ratio.
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 | S1C84Z-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 |
