KCG3-40L1J20 is a left-hand lead steel worm gear in the Module 3 series with a 40:1 reduction ratio, 20 mm bore, and 30 mm face width. It has a 1-start thread with a 3°55' helix angle, is made of FC200 gray iron, and features a standard full-depth tooth profile with a 14°30' normal pressure angle. The part includes a keyway and set screw, with a weight of 1.79 kg, and a backlash range of 0.15~0.33 mm. This variant is available-on-request
Module 3, 40 Tooth, 1 Start, Left Handed Cast Iron Worm Gear with 20mm 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 | KCG3-40L1J20 | KCG3-40L1J20 |
| Product Name | Left Hand Lead Worm Gears (metric) | Module 3, 40 Tooth, 1 Start, Left Handed Cast Iron Worm Gear with 20mm Finished Bore |
| Number of Teeth | 40 | 40 |
| Design | Metric | |
| Pressure Angle | 20° | 14.5° |
| Mounting | Keyway; Set Screw | Keyway |
| PD | 120 mm (4.72 inch) | 120 mm (4.72 inch) |
