There are two main types of cam bearings: plain bearings and roller bearings. Plain bearings are made of a solid material, such as bronze, and they rely on a thin film of oil to prevent metal-to-metal contact between the camshaft and the bearing. Roller bearings, on the other hand, are made up of a series of rollers that rotate between the camshaft and the bearing. Roller bearings are more durable than plain bearings, but they are also more expensive.
The type of cam bearing that is used in a particular engine depends on the engine's design and performance requirements. For example, high-performance engines often use roller bearings because they can handle higher loads and speeds.
Cam bearings are typically replaced when the engine is rebuilt. However, they may need to be replaced more frequently if the engine is subjected to heavy use or if the oil is not changed regularly.
If you are experiencing problems with your engine's camshaft, such as excessive noise or vibration, it is important to have the cam bearings checked. Replacing worn cam bearings can help to improve engine performance and extend its life.
