Miter gears are 1 type of bevel gears where the two rotational axes intersect. When talking about narrow definition of bevel gears with ability to increase or decrease speed, miter gears don’t have that ability due to the pair’s same quantity of teeth. Their purpose is bound to the switch in transmission path. Because they are a type of bevel gears, the basic characteristic of bevel gears can be found such as presence of gear forms of miter gear straight cut, spiral cut and types.

Also, because the shafts could be set to any angle, generally there are miter gears with non-90 degree (non-perpendicular) angle called angular miter gears. Ever-power is usually capable of creating angular miter gears with shaft angles in the range of 45 to 120 degrees.

Because a pair of straight tooth miter gears gets the same number of teeth, apart from minor differences such as place screw holes and key ways, the same two gears may mate with one another. However, regarding spiral miter gears, even when the amount of teeth are the same, the twisting directions will vary. Therefore, the same gear cannot be meshed together, and it is necessary to pair the proper and left handed pairs.

Bevel gears are classified in various types according to geometry:

Right bevel gears have conical pitch surface and teeth are straight and tapering towards apex.