A 1T 6-N242008 is a 24-pitch molded worm gear with 20 teeth, made of mineral-filled nylon, and features a brass insert with a .2500 inch bore accommodated by a #6-32 set screw and sub-drill. It has a pitch diameter of 0.833 inch, outside diameter of 0.917 inch, face width of 0.2500 inch, and a hub projection of 15/16 inch. The gear operates with a 14.5° pressure angle and is designed for right-hand worm meshing at a 90° shaft angle. The gear's hub diameter is 0.75 inch, with a 1/16 inch keyway width and hub length of 0.75 inch.
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 1T 6-N242008 |
| Product Name | 20:1 Gear Ratio, 20 Teeth, Worm Gear |
| Gear Type | Rack |
| Number of Teeth | 20 |
| Pressure Angle | 14.5° |
