KMSGA4-18 is a ground spur gear with a module of 4 and 18 teeth, designed for power transmission. It has an 8 mm wide by 3.3 mm deep keyway, a bore diameter of 50 mm, an outside diameter of 80 mm, and a face width of 40 mm. The gear is made from SCM415 steel with overall carburizing heat treatment, achieving a hardness of 55 to 60 HRC. It meets JIS grade N5 precision (JIS B1702-1: 1998) and has a 20° pressure angle. The allowable torque is 777 N·m (79.3 kgf·m) for bending strength and 455 N·m (46.4 kgf·m) for surface durability, with a theoretical backlash of 0.14 to 0.24 mm. Total length is 60 mm. No secondary operations are permitted due to the carburizing process.
Module 4, 18 Tooth Ground Steel Spur 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 | KMSGA4-18 | KMSGA4-18 |
| Product Name | Metal Spur Gears (metric) | Module 4, 18 Tooth Ground Steel Spur Gear |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 18 | 18 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Steel | Steel; Hardened; Hardened Carbon Steel |
