A 64-pitch worm gear with 70 teeth and a 0.2498 in. bore, paired with a double-threaded 303 stainless steel worm, for a 35:1 speed reduction. The gear is made of bronze QQ-B-637 Alloy 464, with a 14-1/2° pressure angle and right-hand threads. It is designed for inch-based mounting with a 3/4 in. hub diameter and 7/64 in. screw hole, compatible with standard 1/8, 3/16, or 1/4 in. bore worms on special order.
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 | S1C86Z-P064B070D |
| Product Name | 35:1 Gear Ratio, 70 Teeth, Worm Gear |
| Gear Type | Rack |
| Number of Teeth | 70 |
| Pressure Angle | 14.5° |
| Material | Bronze; AGMA Q10 / Bronze |
