The KPSA3-55J19 is a plastic spur gear in the KPSA series, with a module of 3, 19 teeth, and a bore size of 6 mm, designed for use with steel shafts under light loads. The gear is made of MC901 nylon, features a 20° pressure angle, and adheres to JIS grade N9 precision standards (JIS B1702-1:1998). It has a keyway of 6 x 2.8 mm per JIS B1301 (Js9 tolerance), a pitch diameter of 57 mm, an outside diameter of 63 mm, and a face width of 30 mm. Maximum allowable torque is 0.74 N·m with a maximum thrust load of 0.73 kgf. Dimensional stability is affected by temperature and humidity fluctuations, and operation without lubrication may cause heat buildup; mating with steel gears is recommended. The gear is identified as a J-series variant, available on request with a lead time of up to five working days after order placement.
Module 3, 55 Tooth Nylon Hubless Spur Gear with 19mm 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 | KPSA3-55J19 | KPSA3-55J19 |
| Product Name | Plastic Spur Gears (metric) | Module 3, 55 Tooth Nylon Hubless Spur Gear with 19mm 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 |
