The KPS3-12J12 is a metric plastic spur gear with a module of 3, 12 teeth, and a 12 mm bore diameter, designed for mechanical power transmission. It features a hub, a 4 mm wide by 1.8 mm deep keyway conforming to JIS B1301, and an M4 set screw. The gear is made of MC901 nylon with a tooth hardness of 115-120 HRR, operates with a 20° pressure angle, and has a face width of 30 mm and a total length of 45 mm. The allowable torque is 7.5 N·m (0.77 kgf·m), with a theoretical backlash of 0.040 mm. It meets JIS grade N9 (JIS B1702-1:1998) precision standards. Dimensions and performance values are based on standard full-depth teeth and assumed usage conditions.
Module 3, 12 Tooth Nylon Spur Gear with Hub and 12mm Finished Bore
Our plastic spur gears are available in a variety of materials, including:
With a variety of fastening styles, including:
You May Also Need:
Shafts
Bearings
Couplings
For custom components or modifications to a standard part, call us or submit an RFQ.
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Design of Plastic Gears and General Considerations of Plastic Gearing
How to Achieve Optimum Performance in a Miniature Gear Train
| QTC METRIC GEARS | Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|---|
| Product Category | Gears | Gears |
| Product Number | KPS3-12J12 | KPS3-12J12 |
| Product Name | Plastic Spur Gears (metric) | Module 3, 12 Tooth Nylon Spur Gear with Hub and 12mm Finished Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 12 | 12 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Nylon | Nylon; Nylon / No Insert |
