Plastic spur gear with a steel core, module 3, 40 teeth, 70 mm outside diameter, 30 mm face width, and 70 mm hub diameter, designed for high-temperature operation and dimensional stability. The gear uses MC602ST nylon fused to an S45C steel core via a diamond knurling and grooving process, with a JIS grade N9 precision rating and a 20° pressure angle. Maximum allowable torque is 4.90 N·m (0.56 kgf·m), and backlash is specified as 0~0.56 mm. The bore diameter is 70 mm, matching the hub diameter, and total length is 85 mm. Weight is 0.91 kg. The design eliminates the need for bolts or nuts, offering a clean appearance and improved holding strength.
Module 3, 40 Tooth Nylon Steel Core Spur Gear with Finished 28mm 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 | KNSU3-40J28 | KNSU3-40J28 |
| Product Name | Plastic Spur Gears (metric) | Module 3, 40 Tooth Nylon Steel Core Spur Gear with Finished 28mm Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 40 | 40 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Nylon | Nylon; Nylon / Steel Core |
