The KSHE4-18L is a helical gear with a 4 mm module, 18 teeth, and a 20° normal pressure angle, made from S45C steel with a black oxide surface treatment. It has a bore diameter of 20 mm, a hub diameter of 74 mm, a pitch diameter of 76.39 mm, an outside diameter of 86 mm, a face width of 40 mm, and a hub width of 25 mm. The gear is precision-ground to JIS grade N8 (JIS B1702-1:1998), has a profile shift coefficient of +0.201, and is designed for use with right-hand helical racks. The allowable torque is 474 N·m (48.3 kgf·m) for bending strength and 89.8 N·m (9.16 kgf·m) for surface durability, with a backlash of 1.99 mm. It weighs 1.99 kg.
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Shafts
Bearings
Couplings
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 | KSHE4-18L |
| Product Name | 4 mm Normal Module, 18 Teeth, 20° Pressure Angle, S45C Steel Helical Spur Gear |
| Gear Type | Spur; Helical; Rack |
| Number of Teeth | 18 |
| Direction | Left |
| Pressure Angle | 20° |
