The KNSU3-24 is a plastic spur gear with a steel core, featuring a module of 3, 24 teeth, a 43 mm bore, a 72 mm pitch diameter, a 78 mm outside diameter, a 30 mm face width, and a 47 mm total length. It is made of MC602ST nylon fused to an S45C steel core using a diamond knurling process for enhanced bonding. The gear meets JIS grade N9 (JIS B1702-1:1998) precision standards, has a 20° pressure angle, and a backlash of 0~0.54 mm. The allowable torque is 25.1 N·m (2.56 kgf·m). The design ensures dimensional stability across temperature variations and eliminates the need for mechanical fasteners. Multiple variants in the KNSU3 series share this construction and specification profile.
Module 3, 24 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 | KNSU3-24J12 | KNSU3-24J12 |
| Product Name | Plastic Spur Gears (metric) | Module 3, 24 Tooth Nylon Steel Core Spur Gear with Finished 12mm Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 24 | 24 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Nylon | Nylon; Nylon / Steel Core |
