KPG3-20R2J20 is a right-hand, two-start, 20-tooth plastic worm gear with a module of 3, designed for use with stainless steel worms. It features a 20 mm bore, 50 mm hub diameter, 60.57 mm pitch diameter, 66 mm throat diameter, 69 mm outside diameter, 28 mm face width, 15 mm hub width, and 43 mm total length. The gear is made from MC901 nylon, has a helix angle of 7°50', and an allowable torque of 13.8 N·m (1.41 kgf·m). Backlash is specified as 0 to 0.38 mm. It includes a keyway (6 mm x 2.8 mm) with an M5 set screw and weighs 0.56 kg.
Module 3, 20 Tooth, 2 Start, Right Handed Nylon Worm Gear with Finished 20mm Bore
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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| QTC METRIC GEARS | Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|---|
| Product Category | Gears | Gears |
| Product Number | KPG3-20R2J20 | KPG3-20R2J20 |
| Product Name | Right Hand Lead Worm Gears (metric) | Module 3, 20 Tooth, 2 Start, Right Handed Nylon Worm Gear with Finished 20mm Bore |
| Number of Teeth | 20 | 20 |
| Design | Metric | |
| Pressure Angle | 20° | 20° |
| Mounting | Keyway; Set Screw | Keyway |
| PD | 60 mm (2.36 inch) | 60 mm (2.36 inch) |
