KPG2.5-20R2J17 is a right-hand lead plastic worm gear with a module of 2.5, 20 teeth, 2 starts, and a 17 mm bore. It is made of MC901 nylon, has a normal pressure angle of 20°, a face width of 22 mm, a hub width of 14 mm, and a total length of 36 mm. The mounting distance is 43.5 mm. The allowable torque is 8.54 N·m (0.87 kgf·m), with a backlash of 0~0.36 mm. The keyway is 5 mm wide by 2.3 mm deep, and an M4 set screw is included. The gear is profile shifted for proper center distance and is susceptible to dimensional changes due to temperature and humidity.
Module 2.5, 20 Tooth, 2 Start, Right Handed Nylon Worm Gear with 17mm Finished 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 | KPG2.5-20R2J17 | KPG2.5-20R2J17 |
| Product Name | Right Hand Lead Worm Gears (metric) | Module 2.5, 20 Tooth, 2 Start, Right Handed Nylon Worm Gear with 17mm Finished Bore |
| Number of Teeth | 20 | 20 |
| Design | Metric | |
| Pressure Angle | 20° | 20° |
| Mounting | Keyway; Set Screw | Keyway |
| PD | 50 mm (1.97 inch) | 50 mm (1.97 inch) |
