KBG2-20R1 is a bronze worm wheel with a 20:1 reduction ratio, 20 teeth, and a single right-hand helix angle of 3°42'. It has a plain bore of 12 mm, a hub diameter of 33 mm, a pitch diameter of 40.08 mm, a throat diameter of 44 mm, an outside diameter of 46 mm, and a face width of 22 mm. The unit is designed for use with a KSW steel worm gear, has a total length of 35 mm, hub width of 13 mm, and mounting distance of 35.5 mm. The allowable torque at 30 rpm is 12.3 N·m, and the backlash ranges from 0.10 to 0.28 mm. The unit weighs 0.33 kg and is manufactured with a sand mold casting finish. Precision grade is KHK W 002 grade 4 with a standard full-depth tooth of 14°30' normal pressure angle and material CAC502.
Module 2, 20 Tooth, 1 Start, Right 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 | KBG2-20R1 | KBG2-20R1 |
| Product Name | Right Hand Lead Worm Gears (metric) | Module 2, 20 Tooth, 1 Start, Right 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) |
