The KNSU2.5-68J30 is part of the KNSU series of plastic spur gears with a steel core, designed for mechanical power transmission. The part has a module of 2.5, 68 teeth, a 70 mm bore, a pitch diameter of 170 mm, an outside diameter of 175 mm, a face width of 25 mm, and a total length of 135 mm. It conforms to JIS grade N9 precision (JIS B1702-1:1998) and uses MC602ST nylon fused to an S45C steel core. The allowable torque is rated at 52.4 N·m (5.34 kgf·m), with a backlash range of 0 to 0.48 mm. The gear incorporates a diamond knurl on the steel core for secure fusion with the nylon, enhancing dimensional stability across temperature ranges up to 140°C.
Module 2.5, 68 Tooth Nylon Steel Core Spur Gear with Finished 30mm 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.
Request for Quote
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 | KNSU2.5-68J30 | KNSU2.5-68J30 |
| Product Name | Plastic Spur Gears (metric) | Module 2.5, 68 Tooth Nylon Steel Core Spur Gear with Finished 30mm Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 68 | 68 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Nylon | Nylon; Nylon / Steel Core |
