Bearings are what allow the gears to rotate efficiently. They are usually built outside of bronze or brass, and they match into races (or grooves) while in the gearbox housing. We use cookies to make sure that we provde the most effective knowledge on our website. For more info read https://filtergearbox83479.rimmablog.com/33231782/5-tips-about-filter-gearbox-you-can-use-today