KBG2-20L1J12 is a left-hand lead bronze worm wheel with a module of 2, 20 teeth, 1 start, and a 12 mm bore, designed for use with steel worms. It has a pitch diameter of 40.08 mm, outside diameter of 46 mm, face width of 22 mm, and hub width of 13 mm. The wheel is precision rated to KHK W 002 grade 4 with a normal plane section and 14° 30' pressure angle. The allowable torque at 30 rpm is 12.3 N·m, with a backlash range of 0.10~0.28 mm and a weight of 0.33 kg. The product is made from CAC502 material with no heat treatment applied.
Module 2, 20 Tooth, 1 Start, Left Handed Bronze Worm Gear with 12mm 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 | KBG2-20L1J12 | KBG2-20L1J12 |
| Product Name | Left Hand Lead Worm Gears (metric) | Module 2, 20 Tooth, 1 Start, Left Handed Bronze Worm Gear with 12mm 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) |
