The KNSU3-45 is a plastic spur gear with a steel core, designed for mechanical power transmission. It has a module of 3, 45 teeth, a pitch diameter of 135 mm, an outside diameter of 141 mm, a face width of 30 mm, and a total length of 105 mm. The gear uses MC602ST nylon bonded to an S45C steel core via a diamond-knurled surface treatment, ensuring strong adhesion and dimensional stability. It meets JIS grade N9 (JIS B1702-1:1998) precision standards, has a 20° pressure angle, and an allowable torque of 55.5 N·m (5.66 kgf·m). The backlash is 0~0.56 mm, and the weight is 0.91 kg. The gear is rated for operation across a wide temperature range with minimal dimensional change due to thermal effects.
Module 3, 45 Tooth Nylon Steel Core Spur Gear with Plain 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 | KNSU3-45 | KNSU3-45 |
| Product Name | Plastic Spur Gears (metric) | Module 3, 45 Tooth Nylon Steel Core Spur Gear with Plain Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 45 | 45 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Nylon | Nylon; Nylon / Steel Core |
