Module 1 ground helical gear with 70 teeth, right-hand helix, and a bore of 40 mm, designed for applications requiring high precision and surface durability. Made from SCM440 steel with induction-hardened teeth at 50-60 HRC, it has a helix angle of 21°30', transverse pressure angle of 20°, and meets JIS grade N6 (JIS B1702-1:1998) and JIS grade 2 (JIS B1702:1976) precision standards. The gear has a pitch diameter of 70 mm, outside diameter of 72 mm, face width of 8 mm, hub width of 10 mm, and total length of 18 mm. It supports an allowable torque of 35.2 N·m (bending strength) and 68.9 N·m (surface durability), with a backlash range of 0.10-0.18 mm and a weight of 0.320 kg. Axial thrust forces are generated during operation. Secondary operations on the tooth area are not permitted due to induction hardening.
Module 1, 70 Tooth, Right Hand Ground Helical Gear with Finished 22mm Bore
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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
| QTC METRIC GEARS | Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|---|
| Product Category | Gears | Gears |
| Product Number | KKHG1-70RJ22 | KKHG1-70RJ22 |
| Product Name | Commercial & Precision Helical Gears (metric) | Module 1, 70 Tooth, Right Hand Ground Helical Gear with Finished 22mm Bore |
| Gear Type | Helical | Helical; Rack |
| Number of Teeth | 70 | 70 |
| Design | Metric | |
| Pressure Angle | 20° | 20° |
| PD | 70 mm (2.76 inch) |
