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Miter gears are 1 kind of bevel gears where the two rotational axes intersect. When speaking of narrow description of bevel gears with capability to increase or decrease speed, miter gears do not have that ability due to the pair’s same quantity of teeth. Their purpose is limited to the switch in transmission path. Because they are a type of bevel gears, the basic characteristic of bevel gears exist such as presence of gear types of straight cut, spiral slice and types.

Also, since the shafts can be set to any angle, presently there are miter gears with non-90 degree (non-perpendicular) angle miter gear called angular miter gears. Ever-power is capable of producing angular miter gears with shaft angles in the range of 45 to 120 degrees.

Because a pair of right tooth miter gears gets the same number of teeth, with the exception of minor differences such as set screw holes and key ways, the same two gears may mate with one another. However, in the case of spiral miter gears, even though the number of teeth are the same, the twisting directions will vary. Therefore, the same gear cannot be meshed together, and it is required to pair the right and still left handed pairs.

Bevel gears are classified in various types according to geometry:

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