KNSU3-25 is a plastic spur gear with a steel core, featuring a module of 3, 25 teeth, a 45 mm bore, a 75 mm pitch diameter, an 81 mm outside diameter, a 30 mm face width, and a 47 mm total length. It is made of MC602ST nylon with an S45C metal core, has a pressure angle of 20°, and meets JIS grade N9 precision (JIS B1702-1:1998). The allowable torque is 26.5 N·m (2.70 kgf·m), and backlash is 0~0.54 mm. The gear uses a knurled core for secure nylon adhesion and demonstrates dimensional stability over a wide temperature range. The part is designed for applications requiring low noise, high durability, and minimal thermal expansion.
Module 3, 25 Tooth Nylon Steel Core Spur Gear with Finished 15mm 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 | KNSU3-25J15 | KNSU3-25J15 |
| Product Name | Plastic Spur Gears (metric) | Module 3, 25 Tooth Nylon Steel Core Spur Gear with Finished 15mm Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 25 | 25 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Nylon | Nylon; Nylon / Steel Core |
