KPSA2-85J28 is a plastic spur gear with a module of 2, 28 teeth, and a bore size of 8 mm, designed for use with steel shafts. It features a standard full-depth tooth profile with a 20° pressure angle and is made from MC901 nylon. The gear has a keyway of 8 mm wide by 3.3 mm deep, conforming to JIS B1301 Js9 tolerance. Its allowable torque is 0.52 N·m (0.053 kgf·m), with a theoretical backlash of 0 to 0.46 mm. The gear's pitch diameter is 56 mm, outside diameter is 60 mm, and face width is 20 mm. The part is rated to JIS grade N9 (JIS B1702-1: 1998) for precision. Dimensional stability is affected by temperature and humidity, and use without lubrication is discouraged when paired with other plastic gears.
Module 2, 85 Tooth Nylon Hubless Spur Gear with 28mm 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 | KPSA2-85J28 | KPSA2-85J28 |
| Product Name | Plastic Spur Gears (metric) | Module 2, 85 Tooth Nylon Hubless Spur Gear with 28mm Finished Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 85 | 85 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Nylon | Nylon; Nylon / No Insert |
