Bearings are what allow the gears to rotate smoothly. They are generally manufactured out of bronze or brass, and they fit into races (or grooves) inside the gearbox housing. We use cookies in order that we provide you with the finest working experience on our Internet site. For more information https://edgarvavmb.luwebs.com/34782980/the-smart-trick-of-filter-gearbox-that-no-one-is-discussing