KBG1.25-30R2 is a bronze worm gear with a module of 1.25, 30 teeth, 2 starts, and a right-hand helix angle of 6°50'. It has a bore diameter of 6 mm, hub diameter of 25 mm, pitch diameter of 37.77 mm, throat diameter of 40 mm, outside diameter of 41.25 mm, face width of 11 mm, hub width of 9 mm, total length of 20 mm, and mounting distance of 29.25 mm. The allowable torque at 300 rpm is 4.33 N·m, and the backlash ranges from 0.08 to 0.26 mm. The gear weighs 0.15 kg and is precision grade KHK W 002 grade 4, with a normal pressure angle of 20°. The material is CAC502 (formerly JIS PBC2) and has no heat treatment.
Module 1.25, 30 Tooth, 2 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 | KBG1.25-30R2 | KBG1.25-30R2 |
| Product Name | Right Hand Lead Worm Gears (metric) | Module 1.25, 30 Tooth, 2 Start, Right Handed Bronze Worm Gear with Plain Bore |
| Number of Teeth | 30 | 30 |
| Design | Metric | |
| Pressure Angle | 20° | 20° |
| PD | 37.5 mm (1.48 inch) | 37.5 mm (1.48 inch) |
