Bearings are what allow the gears to rotate easily. They are generally produced outside of bronze or brass, and they fit into races (or grooves) in the gearbox housing. Which is why producers came up with internal filters. These filters are available on several modern automated transmissions. Internal filters have https://filter-gearbox20852.ziblogs.com/34205885/filter-gearbox-can-be-fun-for-anyone