KSS3-21J30 is a module 3, 30-tooth steel spur gear with a finished bore diameter of 30 mm, keyway according to JIS B1301 (Js9 tolerance), and a standard full-depth tooth profile at 20° pressure angle. The gear is made of S45C steel with a tooth hardness less than 194 HB, and has a backlash range of 0.18~0.38 mm. The nominal shaft hole dimension is 30 mm, with a tapped hole depth of 7.5 mm and a set screw included. The allowable torque under specified conditions is 0.72 N·m. Precision complies with JIS Grade N8 (JIS B1702-1:1998).
Module 3, 21 Tooth Mild Steel Spur Gear with 30mm Finished 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 | KSS3-21J30 | KSS3-21J30 |
| Product Name | Metal Spur Gears (metric) | Module 3, 21 Tooth Mild Steel Spur Gear with 30mm Finished Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 21 | 21 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Steel | Steel; Carbon Steel |
