Classification of Gear Toothed Wheels
According to the Position of Axis of Shaft (a) Parallel (b) Intersecting (c) Non-intersecting and non-parallel According to the peripheral velocity of the gears (a) Low velocity, less than 3 m/s (b) Medium velocity, between 3 and 15 m/s (c) High velocity. more than 15 m According to the type of gearing (a)External gearing (b) Internal gearing (c) Rack and pinion According to position of teeth on the gear surface (a) straight (b) inclined (c) curved