KPSA3-55J50 is a plastic spur gear with module 3, 50 teeth, and a bore size of 14 mm, designed for use with steel shafts. The gear has a pitch diameter of 150 mm, outside diameter of 156 mm, and face width of 30 mm. It features a keyway of 14 x 3.8 mm per JIS B1301, Js 9 tolerance, and is made of MC901 nylon with tooth hardness of 115-120 HRR. The gear meets JIS grade N9 (JIS B1702-1:1998) precision standards. Allowable torque is rated at 0.68 N·m. Attachment to shafts requires a steel hub for secure fastening. Dimensional stability is affected by temperature and humidity, and the gear is intended for use with steel mating gears to avoid heat buildup from dry operation.
Module 3, 55 Tooth Nylon Hubless Spur Gear with 50mm 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 | KPSA3-55J50 | KPSA3-55J50 |
| Product Name | Plastic Spur Gears (metric) | Module 3, 55 Tooth Nylon Hubless Spur Gear with 50mm 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 |
