KBG2-20R1J17 is a bronze worm wheel from the KHK W 002 grade 4 series, designed for use with a module 2, right-hand lead steel worm. It has a 20-tooth count, 1 start, and a normal pressure angle of 14°30'. The bore diameter is 12 mm, with hub and throat diameters of 33 mm and 40.08 mm respectively, and an outside diameter of 44 mm. Face width is 22 mm, total length is 35 mm, and hub width is 13 mm. The allowable torque at 30 rpm is 12.3 N·m, with a backlash range of 0.10-0.28 mm. Weight is 0.33 kg. J-series variants require a 5-day lead time and are available in quantities of 1 to 20 units per order. The material is CAC502 with no heat treatment and no specified tooth hardness. Keyways conform to JIS B1301, Js 9 tolerance.
Module 2, 20 Tooth, 1 Start, Right Handed Bronze 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 | KBG2-20R1J17 | KBG2-20R1J17 |
| Product Name | Right Hand Lead Worm Gears (metric) | Module 2, 20 Tooth, 1 Start, Right Handed Bronze Worm Gear with 17mm 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) |
