KSS3-21J20 is a steel spur gear with 20 teeth, module 3, and a 20 mm finished bore. It features a 20° pressure angle, standard full-depth teeth, and is made of S45C steel with a hardness of less than 194 HB. The gear is precision-ground to JIS grade N8 (JIS B1702-1: 1998). It includes a keyway conforming to JIS B1301 (Js 9 tolerance) and a tapped hole with a set screw included. The tooth width is 7.5 mm, and the backlash is specified as 0.18~0.38 mm. The allowable torque is 0.96 N·m. The shaft hole dimension is 6 mm diameter with a 2.8 mm keyway, and the bore is 7.5 mm deep.
Module 3, 21 Tooth Mild Steel Spur Gear with 20mm 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°
For custom components or modifications
to a standard part, call us or submit an RFQ.
REQUEST A QUOTE
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 | KSS3-21J20 | KSS3-21J20 |
| Product Name | Metal Spur Gears (metric) | Module 3, 21 Tooth Mild Steel Spur Gear with 20mm Finished Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 21 | 21 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Steel | Steel; Carbon Steel |
