Gears in gearboxes could be amongst several varieties, from bevel and helical gears to worm gears and planetary gears. The gear is mounted over a shaft supported by roller bearings and rotates around it. This specific type of gearbox is liable for transmitting rotational motion among two non-parallel, cross-sectioned shafts https://israelzpcmv.blogoxo.com/33816474/a-review-of-gearbox