Gears in gearboxes may be one of many styles, from bevel and helical gears to worm gears and planetary gears. The gear is mounted on the shaft supported by roller bearings and rotates all over it. The skew bevel helical gearbox mirrors the bevel helical product but differs in shaft https://gearbox-auto26901.blogproducer.com/40651828/the-basic-principles-of-gearbox