Brass bushing varies by size as they can fit thick walls, thin walls, flanged, sintered, and cylindrical. Brass Bushings can be used for a variety of purposes including Water Pump Bushings, Electric Motors, and Slide Bearings.
Most car engines have a water pump with a brass bushing in the main shaft. It is useful due to the brasses’ anti-rust and anti-friction properties.
Brass can also be used in electric motors on both sides of the armature. Its purpose is to support the motor shaft. It’s perfect for the engine because the brass is cheap, it is anti-friction, and the metal is very easy to produce.
Some machine shafts slide rather than rotate. Brass bushing is used in these types of mechanisms.
A few other examples of where you can find bushings are in fishing reels, stage lights, printer rollers, ATMs, escalators, and surveillance systems.