KSHE4-30L is a helical gear with a 4 mm module, 30 teeth, and a 20° normal pressure angle, made from S45C steel with a black oxide coating. It has a bore diameter of 110 mm, an outside diameter of 138 mm, a face width of 40 mm, and a hub width of 25 mm. The pitch diameter is 127.32 mm, with a profile shift coefficient of +0.335. The gear is rated for a bending strength of 902 N·m and surface durability of 317 N·m, with a backlash range of 0.19 to 0.47 mm. It complies with JIS B1702-1:1998 precision grade N8 and has a left-hand helix direction. Hardened Plus variants are available with an 'H' suffix, but standard hardness is less than 194 HB.
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Shafts
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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 | KSHE4-30L |
| Product Name | 4 mm Normal Module, 30 Teeth, 20° Pressure Angle, S45C Steel Helical Spur Gear |
| Gear Type | Spur; Helical; Rack |
| Number of Teeth | 30 |
| Direction | Left |
| Pressure Angle | 20° |
