Bearings are what enable the gears to rotate smoothly. They are typically created away from bronze or brass, and so they in shape into races (or grooves) from the gearbox housing. Fundamentally it is made up of a metallic plate with mesh-type inserts that protect against contaminants from getting into https://johnnypnhyo.wizzardsblog.com/34038226/the-definitive-guide-to-filter-gearbox