Module 2.5 right-hand ground helical gear with 28 teeth, 20 mm face width, 20 mm bore, 70 mm hub diameter, 70 mm pitch diameter, 75 mm outside diameter, 34 mm total length, and a tooth hardness of 50 to 60 HRC. Made from SCM440 with induction-hardened teeth, conforming to JIS grade N6 (JIS B1702-1:1998) and JIS grade 2 (JIS B1702:1976). The gear has a helix angle of 21°30', transverse pressure angle of 20°, and theoretical backlash of 0.12 to 0.22 mm. The allowable torque is 173 N·m for bending strength and 176 N·m for surface durability. The gear generates axial thrust forces and is not interchangeable with KSH type helical gears. Secondary operations on the tooth area are prohibited due to induction hardening.
Module 2.5, 28 Tooth, Right Hand Ground Helical Gear with Finished 28mm 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 | KKHG2.5-28RJ28 | KKHG2.5-28RJ28 |
| Product Name | Commercial & Precision Helical Gears (metric) | Module 2.5, 28 Tooth, Right Hand Ground Helical Gear with Finished 28mm Bore |
| Gear Type | Helical | Helical; Rack |
| Number of Teeth | 28 | 28 |
| Design | Metric | |
| Pressure Angle | 20° | 20° |
| PD | 70 mm (2.76 inch) |
