Bevel Gears are gears which instead of being a cylinder with straight teeth (like a spur gear), it is formed into a cone (essentially a tapered spur gear). The teeth at the bottom of the bevel (the large end) taper down to smaller gear teeth at the top of the bevel gear (small end). Bevel gears usually run on shafts that are 90 degrees to one another whose axis intersect at some point above the gear teeth. Bevel gears can also be designed on most shaft angle less than or greater than 90 degrees as required
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