KNSU3-45 is a plastic spur gear with a steel core, module 3, 45 teeth, 70 mm outside diameter, 135 mm pitch diameter, 30 mm face width, and 105 mm total length, featuring a 70 mm bore. It has a JIS grade N9 precision rating, standard full-depth teeth with a 20° pressure angle, and is made of MC602ST nylon fused to an S45C metal core. The gear has a weight of 55.5 kg and an allowable torque of 55.5 N·m (5.66 kgf·m). Backlash is specified as 0~0.56 mm. The nylon-to-core bonding method uses a diamond-knurled surface with grooves to ensure strong adhesion and dimensional stability across temperature variations.
Module 3, 45 Tooth Nylon Steel Core Spur Gear with Finished 25mm 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 | KNSU3-45J25 | KNSU3-45J25 |
| Product Name | Plastic Spur Gears (metric) | Module 3, 45 Tooth Nylon Steel Core Spur Gear with Finished 25mm Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 45 | 45 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Nylon | Nylon; Nylon / Steel Core |
