Module 2 ground helical gear with 70 teeth, left-handed helix, and a 35 mm bore, designed for high-precision applications with SCM440 material, induction-hardened tooth surfaces at 50-60 HRC, and JIS grade N6 precision per JIS B1702-1:1998. The gear has a 21°30' helix angle, 20° transverse pressure angle, standard full-depth teeth, and produces axial thrust forces. Allowable torque is 27.4 N·m for bending strength and 63.7 N·m for surface durability, with a backlash range of 0.14-0.24 mm and a total length of 269 mm. Secondary operations on tooth areas are prohibited due to induction hardening.
Module 2, 70 Tooth, Left Handed Ground Helical Gear with Finished 35mm Bore
You May Also Need:
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
| QTC METRIC GEARS | Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|---|
| Product Category | Gears | Gears |
| Product Number | KKHG2-70LJ35 | KKHG2-70LJ35 |
| Product Name | Commercial & Precision Helical Gears (metric) | Module 2, 70 Tooth, Left Handed Ground Helical Gear with Finished 35mm Bore |
| Gear Type | Helical | Helical; Rack |
| Number of Teeth | 70 | 70 |
| Design | Metric | |
| Pressure Angle | 20° | 20° |
| PD | 140 mm (5.51 inch) |
