KDG0.8-30R2 is a right-hand lead plastic worm wheel with module 0.8, 30 teeth, two starts, and a helix angle of 6°34'. It features a bore diameter of 18 mm, a pitch diameter of 24.16 mm, an outside diameter of 25.6 mm, and a face width of 9 mm. The hub width is 9 mm, and the total length is 18 mm. The part is made of polyacetal and has a backlash range of 0.04 to 0.22 mm with an allowable torque of 0.52 N·m (0.053 kgf·m) and a weight of 8.84 g. The bore is finished with a minus tolerance for force fit. The worm wheel is profile shifted to ensure proper center distance. It matches the KDG series specifications for plastic worm wheels with precision grade KHK W 002 grade 5.
Module 0.8, 30 Tooth, 2 Start, Right Handed Polyacetal Worm Gear
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 | KDG0.8-30R2 | KDG0.8-30R2 |
| Product Name | Right Hand Lead Worm Gears (metric) | Module 0.8, 30 Tooth, 2 Start, Right Handed Polyacetal Worm Gear |
| Number of Teeth | 30 | 30 |
| Design | Metric | |
| Pressure Angle | 20° | 20° |
| PD | 24 mm (0.9449 inch) | 24 mm (0.9449 inch) |
