Gears with a 15° helix angle also emit less noise. Helical-gear teeth generate axial loads on the motor shaft. Gearhead bearings must compensate for these loads.

Helical gears are cylindrical disks which have involute-shaped teeth cut into their face at a helix angle. By slanting the teeth, helical gears can obtain a large contact ratio and the gradual change ...

A new series of right-angle helical-gear drives, identified as A 2Z11... Series feature a fiberglass-reinforced nylon housing, hardened steel helical gears, steel shafts ...

The helical-cut gears offer quieter operation for street use, and the angle-or helix-of the gear is adjusted for optimum strength while offering a possible alternative for Factory Stock, Pure ...