KNSU2.5-22J12 is a plastic spur gear with a steel core, part of the KNSU2.5 series featuring a 2.5 module, 22 teeth, a 55 mm outside diameter, a 35 mm hub diameter, a 12 mm bore, a 25 mm face width, and a total length of 40 mm. It is rated for a maximum allowable torque of 1.33 N·m (0.133 kgf·m) and conforms to JIS grade N9 (JIS B1702-1: 1998) precision. The gear uses MC602ST nylon fused to an S45C steel core via a diamond-knurled surface for high holding strength. The design ensures dimensional stability across temperature variations and provides a clean, bolt-free appearance. Backlash is 0-0.44 mm. The part is incompatible with paired plastic gears under unlubricated conditions due to heat generation.
Module 2.5, 22 Tooth Nylon Steel Core Spur Gear with Finished 12mm 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 | KNSU2.5-22J12 | KNSU2.5-22J12 |
| Product Name | Plastic Spur Gears (metric) | Module 2.5, 22 Tooth Nylon Steel Core Spur Gear with Finished 12mm Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 22 | 22 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Nylon | Nylon; Nylon / Steel Core |
