KCG2.5-20R2J15 is a right-hand helical worm gear with a module of 2.5, 20 teeth, 2 starts, and a 7°46' helix angle, paired with a gray iron worm wheel. It has a 15 mm bore, 35 mm pitch diameter, 55 mm outside diameter, and 22 mm face width. The worm wheel is cast with a sand mold finish, and the assembly has a weight of 0.40 kg. The product includes a keyway (5 mm wide × 2.3 mm deep) and a set screw. The precision grade is KHK W 002 grade 4, with backlash specified between 0.13 mm and 0.31 mm.
Module 2.5, 20 Tooth, 2 Start, Right Handed Cast Iron Worm Gear with 15mm 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 | KCG2.5-20R2J15 | KCG2.5-20R2J15 |
| Product Name | Right Hand Lead Worm Gears (metric) | Module 2.5, 20 Tooth, 2 Start, Right Handed Cast Iron Worm Gear with 15mm Finished Bore |
| Number of Teeth | 20 | 20 |
| Design | Metric | |
| Pressure Angle | 20° | 20° |
| Mounting | Keyway; Set Screw | Keyway |
| PD | 50 mm (1.97 inch) | 50 mm (1.97 inch) |
