Left-hand lead bronze worm wheel with a 20:1 reduction ratio, 20 teeth, module 2, and 2 starts, featuring a 12 mm bore, 33 mm hub diameter, 40.34 mm pitch diameter, 44 mm throat diameter, 46 mm outside diameter, and 22 mm face width. The gear has a normal pressure angle of 14°30', standard full-depth teeth, and is made of CAC502 material with a sand mold casting finish. It has a mounting distance of 35.5 mm, allowable torque values for 30 rpm to 1200 rpm ranging from 4.80 N·m to 12.3 N·m, backlash of 0.10-0.28 mm, and weighs 0.33 kg.
Module 2, 20 Tooth, 2 Start, Left Handed Bronze Worm Gear with Plain 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 | KBG2-20L2 | KBG2-20L2 |
| Product Name | Left Hand Lead Worm Gears (metric) | Module 2, 20 Tooth, 2 Start, Left Handed Bronze Worm Gear with Plain Bore |
| Number of Teeth | 20 | 20 |
| Design | Metric | |
| Pressure Angle | 20° | 14.5° |
| PD | 40 mm (1.57 inch) | 40 mm (1.57 inch) |
