Bearings are what enable the gears to rotate efficiently. They are generally designed out of bronze or brass, plus they suit into races (or grooves) while in the gearbox housing. There are two most important sorts of transmissions: automated and handbook. Automated transmissions use fluid couplings rather than a clutch, https://cesarlblub.win-blog.com/14646594/examine-this-report-on-filter-gearbox