KCG2.5-20R1J17 is a right-hand lead bronze worm gear with a 2.5 mm module, 20 teeth, 1 start, and a 17 mm bore, designed for use with a steel worm. The gear has a pitch diameter of 50.11 mm, outside diameter of 57.5 mm, and face width of 22 mm. It is cast from CAC502 material with a sand mold finish, and operates with a 3°52' helix angle. Backlash ranges from 0.13 to 0.31 mm, and the weight is 0.40 kg. The precision grade is KHK W 002 grade 4. The J17 suffix indicates a 17 mm finished bore, with standard keyway and set screw provisions per JIS B1301, Js9 tolerance. This part is available-on-request
Module 2.5, 20 Tooth, 1 Start, Right Handed Cast Iron 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 | KCG2.5-20R1J17 | KCG2.5-20R1J17 |
| Product Name | Right Hand Lead Worm Gears (metric) | Module 2.5, 20 Tooth, 1 Start, Right Handed Cast Iron 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) |
