Left-hand lead worm gear with module 2, 20 teeth, 2 starts, 12 mm bore, and 22 mm face width, made of gray iron with a standard full-depth tooth profile and 14° 30' pressure angle. Hub width is 13 mm, total length is 35 mm, mounting distance is 35.5 mm, and weight is 0.27 kg. Backlash ranges from 0.10 to 0.28 mm. Precision grade is KHK W 002 grade 4. The gear is profile shifted to ensure proper center distance and has a sand mold casting finish.
Module 2, 20 Tooth, 2 Start, Left Handed Cast Iron Worm Gear with 12mm 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 | KCG2-20L2J12 | KCG2-20L2J12 |
| Product Name | Left Hand Lead Worm Gears (metric) | Module 2, 20 Tooth, 2 Start, Left Handed Cast Iron Worm Gear with 12mm Finished Bore |
| Number of Teeth | 20 | 20 |
| Design | Metric | |
| Pressure Angle | 20° | 14.5° |
| Mounting | Keyway; Set Screw | Keyway |
| PD | 40 mm (1.57 inch) | 40 mm (1.57 inch) |
