KSH3-30L is a left-handed helical gear with a module of 3, 70 teeth, and a bore diameter of 20 mm. It has a pitch diameter of 93.17 mm, an outside diameter of 99.17 mm, a face width of 35 mm, and a hub width of 15 mm. The total length is 50 mm. The gear is made of S45C steel with a tooth hardness of less than 194 HB, machined to JIS grade N8 (JIS B1702-1: 1998) precision. The helix angle is 15°, and the normal plane pressure angle is 20°. It has a theoretical backlash of 0.18 to 0.38 mm and an allowable torque of 368 N·m (37.5 kgf·m) for bending strength and 9.73 N·m (0.99 kgf·m) for surface durability. The gear produces axial thrust forces and is not interchangeable with KKHG type helical gears.
Module 3, 30 Tooth, Left Handed Mild Steel Helical Gear
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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.
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| QTC METRIC GEARS | Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|---|
| Product Category | Gears | Gears |
| Product Number | KSH3-30L | KSH3-30L |
| Product Name | Commercial & Precision Helical Gears (metric) | Module 3, 30 Tooth, Left Handed Mild Steel Helical Gear |
| Gear Type | Helical | Helical; Rack |
| Number of Teeth | 30 | 30 |
| Design | Metric | |
| Pressure Angle | 20° | 20° |
| PD | 93 mm (3.66 inch) |
