The KCG1-120R1 is a cast iron worm gear with a 120-tooth count, 1 start, and right-hand helix, designed for use with metric worms. It has a bore diameter of 10 mm, a hub diameter of 40 mm, a pitch diameter of 120.24 mm, an outside diameter of 123 mm, a face width of 10 mm, and a hub width of 20 mm. The total length is 68 mm, with a web thickness of 6 mm and a web outer diameter of 111 mm. The mounting distance is 68 mm. The gear operates at a 20° normal pressure angle with KHK W 002 grade 4 precision, and has an allowable torque of 30.5 N·m at 30 rpm, decreasing with higher speeds. Backlash ranges from 0.06 to 0.24 mm, and the weight is 0.63 kg.
Module 1, 120 Tooth, 1 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 | KCG1-120R1J15 | KCG1-120R1J15 |
| Product Name | Right Hand Lead Worm Gears (metric) | Module 1, 120 Tooth, 1 Start, Right Handed Cast Iron Worm Gear with 15mm Finished Bore |
| Number of Teeth | 120 | 120 |
| Design | Metric | |
| Pressure Angle | 20° | 20° |
| Mounting | Keyway; Set Screw | Keyway |
| PD | 120 mm (4.72 inch) | 120 mm (4.72 inch) |
