KSSA3-25 is a steel hubless spur gear with a module of 3, 25 teeth, and a standard full-depth profile with a 20° pressure angle. It is made of S45C steel with a tooth hardness of less than 194 HB, conforming to JIS grade N8 (JIS B1702-1:1998). The gear has a bore size of 15 mm, an outside diameter of 81 mm, and a tooth width of 30 mm. Its allowable torque is 1.66 N·m, with a theoretical backlash range of 0.18~0.38 mm and a weight of 1.00 kg. No secondary operations that reduce tooth width are recommended due to risks to precision and strength.
Module 3, 25 Tooth Mild Steel Hubless 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 | KSSA3-25 | KSSA3-25 |
| Product Name | Metal Spur Gears (metric) | Module 3, 25 Tooth Mild Steel Hubless Spur Gear with Plain Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 25 | 25 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Steel | Steel; Carbon Steel |
