KNSU2.5-70 is a plastic spur gear with a steel core, module 2.5, 70 teeth, and a 70 mm bore diameter, designed for high torque applications with improved dimensional stability and temperature resistance. The gear has a pitch diameter of 175 mm, outside diameter of 180 mm, face width of 25 mm, and total length of 140 mm. It features a standard full-depth tooth profile with a 20° pressure angle, manufactured to JIS grade N9 precision per JIS B1702-1:1998. The MC602ST nylon is fused to an S45C steel core via a diamond-knurled and grooved interface, enhancing bond strength without mechanical fasteners. Allowable torque is 54.1 N·m (5.51 kgf·m), with backlash ranging from 0 to 0.48 mm. The gear operates reliably at ambient temperatures up to 120°C with temperature compensation applied.
Module 2.5, 70 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 | KNSU2.5-70J28 | KNSU2.5-70J28 |
| Product Name | Plastic Spur Gears (metric) | Module 2.5, 70 Tooth Nylon Steel Core Spur Gear with Finished 28mm Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 70 | 70 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Nylon | Nylon; Nylon / Steel Core |
