KBG1.25-20R2 is a right-hand lead bronze worm gear with a module of 1.25, 20 teeth, and two starts. It has a bore diameter of 6 mm, a hub diameter of 20 mm, a pitch diameter of 25.18 mm, an outside diameter of 28.75 mm, a face width of 11 mm, a hub width of 9 mm, and a total length of 20 mm. The backlash is specified as 0.08 to 0.26 mm, and the weight is 0.070 kg. The gear is made of CAC502 material with a precision grade of KHK W 002 grade 4, a normal pressure angle of 20°, and a standard full-depth tooth form. Allowable torque values are provided for rotational speeds from 30 to 1200 rpm.
Module 1.25, 20 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 | KBG1.25-20R2 | KBG1.25-20R2 |
| Product Name | Right Hand Lead Worm Gears (metric) | Module 1.25, 20 Tooth, 2 Start, Right Handed Bronze Worm Gear with Plain Bore |
| Number of Teeth | 20 | 20 |
| Design | Metric | |
| Pressure Angle | 20° | 20° |
| PD | 25 mm (0.9843 inch) | 25 mm (0.9843 inch) |
