Bevel gears are gear wheels used to transmit force and motion on shafts with intersecting axes, with teeth cut around their lateral surfaces so that they meet at the apex of the truncated cone.
Bevel gears are generally used in systems where force and speed are transmitted by means of shafts with intersecting axes. It is widely used in the transportation of very large forces, in the gearboxes of power machines and vehicles.
Another difference between bevel gears and spur gears is that they are designed and manufactured together with the counter gear. As in the case of cylindrical spur gears, it is not enough to have the same modulus (or DP) and engagement angle values to ensure equal operation.