Bevel gears transmit power between two intersecting shafts at any angle or between non- intersecting shafts. They are classified as
Straight
Spiral tooth bevel
Hypoid gears
When intersecting shafts are connected by gears, the pitch cones (analogous to the pitch cylinders of spur and helical gears) are tangent along an element, with their apexes at the intersection of the shafts as in Fig.below ...
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