Bevel Gears

Bevel Gears

Bevel Gears - A bevel gear is one in which the teeth are cut so that they radiate from the apex of a cone and lie on the conical surface. Such gears have bevelled basic form. A set of two bevel gears is used to transmit power from one shaft to another shaft which is not parallel to the first one. A pair of gears 1 and 2 for shafts whose centre lines meet at right angles.

Bevel gears can be made, however, for shafts whose centre lines meet but are not at right angles to each other.Bevel gears are available with straight, helical and spiral teeth. Where smooth running is required to avoid noise at high speeds, the straight bevel gears are inferior to the spiral bevel gears.

Bevel gears are more expensive to cut than spur gears. The most usual sizes of bevel gears are 3CO mm diameter and under. Bevel gears are used 1:1 for angular drive.