KBG2.5-20L2 is a left-hand lead bronze worm wheel with a module of 2.5, 20 teeth, 2 starts, a helix angle of 7°46', bore diameter of 12 mm, hub diameter of 35 mm, pitch diameter of 50.46 mm, throat diameter of 55 mm, outside diameter of 57.5 mm, and face width of 22 mm. It has a normal pressure angle of 20°, is made of CAC502, and has a tooth hardness of no specified value. The allowable torque at 100 rpm is 17.3 N·m, with a backlash of 0.13-0.31 mm and a weight of 0.49 kg. The precision grade is KHK W 002 grade 4, and it is profile shifted for proper center distance.
Module 2.5, 20 Tooth, 2 Start, Left 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 | KBG2.5-20L2 | KBG2.5-20L2 |
| Product Name | Left Hand Lead Worm Gears (metric) | Module 2.5, 20 Tooth, 2 Start, Left Handed Bronze Worm Gear with Plain Bore |
| Number of Teeth | 20 | 20 |
| Design | Metric | |
| Pressure Angle | 20° | 20° |
| PD | 50 mm (1.97 inch) | 50 mm (1.97 inch) |
