KCG2-20R1J12 is a right-hand lead, 1-start, 20-tooth gray iron worm wheel with a 12 mm bore, designed to mesh with a module 2 steel worm gear. It has a pitch diameter of 40.08 mm, outside diameter of 44 mm, face width of 22 mm, and a hub width of 13 mm. The gear is precision graded KHK W 002 grade 4, with a normal pressure angle of 14° 30', and is rated for allowable torque up to 7.38 N·m at 30 rpm, decreasing with increasing speed. Backlash ranges from 0.10 to 0.28 mm, and the unit weighs 0.27 kg. The J-series designation indicates it is available-on-request
Module 2, 20 Tooth, 1 Start, Right 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 | KCG2-20R1J12 | KCG2-20R1J12 |
| Product Name | Right Hand Lead Worm Gears (metric) | Module 2, 20 Tooth, 1 Start, Right 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) |
