A 48-pitch worm gear with 75 teeth, .1248 inch bore, and double-threaded helix, made of bronze QQ-B-637 Alloy 464, designed to mesh with matching 303 stainless steel worms. It has a 14-1/2° pressure angle and a face width of 3/16 inch. The gear's pitch diameter is 1.5625 inches and is secured with a set screw compatible with a #2-56 screw. This part is part of a series of 48-pitch worm gears with standardized bore sizes and thread types.
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 | S1C83Z-P048B075D |
| Product Name | 37.5:1 Gear Ratio, 75 Teeth, Worm Gear |
| Gear Type | Rack |
| Number of Teeth | 75 |
| Pressure Angle | 20° |
| Material | Bronze; AGMA Q10 / Bronze |
