KSSR3-120 is a steel spur ring gear with a module of 3, 120 teeth, and a bore pitch diameter of 360 mm. It has an outside diameter of 366 mm and a face width of 30 mm. The gear is made of S45C steel with a tooth hardness of less than 194 HB, features a 20° pressure angle and standard full-depth teeth, and meets JIS grade N9 precision (JIS B1702-1:1998). The allowable torque is 1240 N·m (160 kgf·m), and theoretical backlash ranges from 0.22 to 0.45 mm. The part weighs 7.77 kg. Bore tolerance is H8, but deformation may cause deviations beyond specified limits.
Module 3, 120 Tooth Mild Steel Spur Ring Gear
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 | KSSR3-120 | KSSR3-120 |
| Product Name | Metal Spur Gears (metric) | Module 3, 120 Tooth Mild Steel Spur Ring Gear |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 120 | 120 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Steel | Steel; Carbon Steel |
