KSS3-120 is a steel spur gear with a module of 3, 120 teeth, and a plain bore, designed for parallel-axis power transmission. It is made of S45C steel with a tooth hardness less than 194HB and conforms to JIS grade N8 (JIS B1702-1:1998) precision standards. The gear has a 20° pressure angle and standard full-depth teeth. No heat treatment is applied. Its weight is 15.7 kg. Keyways, when specified, conform to JIS B1301 standard with Js9 tolerance. Set screws are included for tapped holes. The gear is not counterbored and lacks die-forged finish. Secondary operations that narrow tooth width are discouraged as they compromise precision and strength.
Module 3, 120 Tooth Mild Steel Spur Gear with Plain Bore
Inch Gears: AGMA 12, 10, 9, and 8
Available Pitches: 120 thru 16
Pressure Angles: 20° and 14.5°
Metric Gears: ISO 5 thru 9
Available Modules: 0.3 thru 3
Pressure Angles: 20° and 14.5°
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Elements of Metric Gear Technology
How to Achieve Optimum Performance in a Miniature Gear Train
You May Also Need:
Shafts
Bearings
Couplings
Our metal spur gears are available in a variety of materials, including:
With a variety of fastening styles, including:
| QTC METRIC GEARS | Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|---|
| Product Category | Gears | Gears |
| Product Number | KSS3-120 | KSS3-120 |
| Product Name | Metal Spur Gears (metric) | Module 3, 120 Tooth Mild Steel Spur Gear with Plain Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 120 | 120 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Steel | Steel; Carbon Steel |
