Steel hubless spur gears in module 3 with 56 teeth and a 30 mm bore, classified as JIS grade N8 (JIS B1702-1:1998), with 20° pressure angle and S45C material. The tooth hardness is less than 194 HB, and backlash ranges from 0.20 to 0.44 mm. The allowable torque is 90.3 N·m (9.21 kgf·m), and the weight is 4.47 kg. Backlash values are theoretical for paired identical gears. Secondary operations narrowing tooth width are discouraged to preserve precision and strength.
Module 3, 56 Tooth Mild Steel Hubless 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 | KSSA3-56J30 | KSSA3-56J30 |
| Product Name | Metal Spur Gears (metric) | Module 3, 56 Tooth Mild Steel Hubless Spur Gear with 30mm Finished Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 56 | 56 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Steel | Steel; Carbon Steel |
