Bearings are what allow the gears to rotate efficiently. They are generally made away from bronze or brass, they usually fit into races (or grooves) inside the gearbox housing. We use cookies to ensure that we provde the ideal expertise on our website. For more information study our Privateness Plan. https://filtergearbox01233.bcbloggers.com/33257221/5-easy-facts-about-filter-gearbox-described