Module 3, 70-tooth ground spur gear with a 40 mm bore and 12 mm x 3.3 mm keyway, made of S45C steel with induction-hardened tooth surfaces at 50-60 HRC, conforming to JIS grade N7 precision (JIS B1702-1:1998). The gear has a 20° pressure angle, standard full-depth teeth, and an allowable torque of 8.86 N·m. Set screw is included. Backlash is 0.14-0.24 mm. Due to induction hardening, no secondary operations are permitted on tooth areas, including the bottom land. A 1 to 20 unit production limit applies for this J-series variant.
Module 3, 70 Tooth Ground Steel Spur Gear with 40mm 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.
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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 | KSSG3-70J40 | KSSG3-70J40 |
| Product Name | Metal Spur Gears (metric) | Module 3, 70 Tooth Ground Steel Spur Gear with 40mm Finished Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 70 | 70 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Steel | Steel; Hardened; Hardened Carbon Steel |
