KNSU3-20J17 is a plastic spur gear with a steel core, part of the KNSU3 series, featuring a module of 3, 20 teeth, a 33 mm bore, and a 17 mm hub width. The gear has a pitch diameter of 60 mm, an outside diameter of 66 mm, and a face width of 30 mm. It is made of MC602ST nylon fused to an S45C steel core using a diamond knurling process for high holding strength. The gear meets JIS grade N9 precision (JIS B1702-1:1998) with a 20° pressure angle and standard full-depth teeth. The allowable torque is 19.9 N·m (2.03 kgf·m), and the backlash is 0.54 mm maximum. Dimensional stability is maintained across wide temperature ranges, and the design eliminates the need for mechanical fasteners.
Module 3, 20 Tooth Nylon Steel Core Spur Gear with Finished 17mm 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 | KNSU3-20J17 | KNSU3-20J17 |
| Product Name | Plastic Spur Gears (metric) | Module 3, 20 Tooth Nylon Steel Core Spur Gear with Finished 17mm Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 20 | 20 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Nylon | Nylon; Nylon / Steel Core |
