KSHE3-20L is a helical gear with a module of 3 mm, 20 teeth, a normal pressure angle of 20°, and a left-hand helix angle of 19° 31' 41". It is made of S45C steel with a tooth hardness of less than 194HB and a black oxide surface treatment. The gear has a bore diameter of 59 mm, a pitch diameter of 63.66 mm, an outside diameter of 72 mm, a face width of 30 mm, and a hub width of 20 mm. It includes a profile shift coefficient of +0.390 and is designed for mounting with a center distance of 50 mm. The allowable torque is 238 N·m (24.2 kgf·m) for bending strength and 45.7 N·m (4.66 kgf·m) for surface durability, with a backlash of 0.15~0.39 mm. It complies with JIS grade N8 (JIS B1702-1: 1998).
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Helical gears are comparable to spur gears, but due to the higher contact ratio, they are quieter, vibrate less, and experience less friction. Helical gear pairs have the same helix angle but opposite threads (left-hand and right-hand). Helical gears can be used in place of spur gears; they can be used in drives with non-parallel axes or positioned in between parallel axes. Helical gears are suitable for applications involving faster speeds and larger loads because, unlike spur gears, their teeth are twisted along the helical path and progressively interlock into one another.
Helical gears can also be found in industries related to movable earth, power, and oil drilling. Because of their efficacy with heavy loads, they are found in elevators, conveyors, compressors, and blowers. The most popular helical gear application is in the automobile industry, specifically in transmissions.
Our inch and metric helical gears are offered in 48-pitch modules 1, 2, and 3.
They are available in stainless steel, aluminum, and ground-hardened steel with black oxide finishes.
Call us: 516-328-3300
| Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|
| Product Category | Gears |
| Product Number | KSHE3-20L |
| Product Name | 3 mm Normal Module, 20 Teeth, 20° Pressure Angle, S45C Steel Helical Spur Gear |
| Gear Type | Spur; Helical; Rack |
| Number of Teeth | 20 |
| Direction | Left |
| Pressure Angle | 20° |
