KCG3-50R1J20 is a right-hand helical worm gear in the KCG Module 3 series, with a 50:1 reduction ratio, 50 teeth, 1 start, and a 20 mm bore. It features a gray iron wheel, a normal module of 3 mm, a 3°55' helix angle, and a 15-33 mm backlash range. The gear has a pitch diameter of 150.35 mm, an outside diameter of 156 mm, and a face width of 30 mm. Its allowable torque at 30 rpm is 121 N·m, decreasing to 60.5 N·m at 1200 rpm. The part weighs 2.50 kg and includes a keyway and set screw per JIS B1301 standards. The J-series variant is available on request and requires a lead time for shipment.
Module 3, 50 Tooth, 1 Start, Right 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 | KCG3-50R1J20 | KCG3-50R1J20 |
| Product Name | Right Hand Lead Worm Gears (metric) | Module 3, 50 Tooth, 1 Start, Right Handed Cast Iron Worm Gear with 20mm Finished Bore |
| Number of Teeth | 50 | 50 |
| Design | Metric | |
| Pressure Angle | 20° | 14.5° |
| Mounting | Keyway; Set Screw | Keyway |
| PD | 150 mm (5.91 inch) | 150 mm (5.91 inch) |
