KPG2-20R2J12 is a right-hand, 2-start plastic worm gear with a 20-tooth count, module 2, and a 12 mm bore. It is paired with a stainless steel worm and features a standard full-depth tooth profile with a normal pressure angle of 14°30'. The gear is made of MC901 nylon, has a hub width of 13 mm, and a total length of 35 mm. The catalog specifies an allowable bending torque of 0.49 N·m and a backlash range of 0 to 0.33 mm. The bore is precision-machined to H8 tolerance, and a keyway of size 4 mm width by 1.8 mm depth is provided. The part is profile-shifted to ensure correct center distance, and lubrication is required if operating above the calculated sliding speed limit. The weight is 0.046 kg.
Module 2, 20 Tooth, 2 Start, Right Handed Nylon Worm Gear with Finished 12mm 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 | KPG2-20R2J12 | KPG2-20R2J12 |
| Product Name | Right Hand Lead Worm Gears (metric) | Module 2, 20 Tooth, 2 Start, Right Handed Nylon Worm Gear with Finished 12mm Bore |
| Number of Teeth | 20 | 20 |
| Design | Metric | |
| Pressure Angle | 20° | 20° |
| Mounting | Keyway; Set Screw | Keyway |
| PD | 40 mm (1.57 inch) | 40 mm (1.57 inch) |
