Gears in gearboxes is usually one among many forms, from bevel and helical gears to worm gears and planetary gears. The equipment is mounted with a shaft supported by roller bearings and rotates all over it. The skew bevel helical gearbox mirrors the bevel helical design but differs in shaft https://gearbox43185.bloguetechno.com/an-unbiased-view-of-gearbox-68765830