• Sri Venkateswara Gear Wheels Private Limited

Helical Gears

Helical Gears offer a refinement over spur gears. The teeth are cut at an angle, allowing for more gradual, hence smoother meshing between gear wheels, eliminating the whine characteristic of straight-cut gears. The advantage of helical gears is an increased load capacity due to the extended face width over spur gears. The use of helical gears is indicated when the application involves high speeds, large power transmission, or where noise abatement is important. The speed is considered to be high when the pitch line velocity (i.e. circumferential velocity) exceeds 5000 ft/min or the rotational speed of the pinion (i.e. smaller gear) exceeds 3600 rpm. Helical gears may also be ran at 90 degrees to one another by using gears with the same helix angle.