The KPSA2-55J20 is a plastic spur gear in the KPSA series, constructed from MC901 nylon with a module of 2, 20 teeth, and a 20° pressure angle. It has a bore of 20 mm, a pitch diameter of 40 mm, an outside diameter of 44 mm, and a face width of 20 mm, with a keyway of 6 mm width by 2.8 mm depth per JIS B1301 standards. The gear has allowable torque of 17.5 N·m or 1.78 kgf·m and a theoretical backlash range of 0 to 0.46 mm. Precision meets JIS grade N9 (JIS B1702-1: 1998), and tooth hardness is 115-120 HRR. It is designed for light-load applications and recommended for use with steel gears to mitigate heat buildup from friction. Hubless construction requires secondary fastening methods such as heat-set or fusion-bonded steel hubs for secure shaft mounting.
Module 2, 55 Tooth Nylon Hubless Spur Gear with 20mm Finished 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 | KPSA2-55J20 | KPSA2-55J20 |
| Product Name | Plastic Spur Gears (metric) | Module 2, 55 Tooth Nylon Hubless Spur Gear with 20mm Finished Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 55 | 55 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Nylon | Nylon; Nylon / No Insert |
