Toyota Genuine Camshaft Bearing Set

In its most basic form, bearings are meant to reduce friction that's what they do for your camshaft. They keep it rotating where it should be and help prevent problematic friction from wreaking havoc on your engine.

The primary job of the cam bearing is to support the camshaft and allow it to rotate so it will activate push rods and rocker arms to open and close valves. The bearings are designed to put up with dynamic forces that are produced as the cams rotate and as the valves open and close.