Frequently Asked Questions (FAQs)
1. What is the best material for cam bearings?
Babbitt is considered the best material for cam bearings. It is a soft and slippery material made primarily of lead and tin. Babbitt possesses properties that allow it to withstand adverse conditions such as foreign particle contamination, misalignment, and marginal lubrication on start-up.
2. What are the different types of cam bearings?
There are two major types of cam bearings: stud type and yoke type. In both types, a stem or shaft extends from the inner race. The yoke type has a hollow stem to press onto a stub shaft, while the stud type has a threaded stem to be screwed into a corresponding threaded hole.
3. Which engine bearing is best?
For performance applications, tri-metal bearings are generally the preferred choice. They consist of a steel backing, a bronze substrate, and an overlay made of various metals. Tri-metal bearings provide the necessary durability and performance for high-performance engines.
4. What are the best bearings for high-speed?
Angular contact bearings are the best choice for high-speed applications. They have smaller balls, which weigh less and produce less centrifugal force when rotating. This makes them suitable for high-speed operations.
5. What is the strongest type of bearing?
For high radial loads, cylindrical roller bearings are the strongest type of bearing. They are capable of withstanding heavy loads. However, for lighter loads, a ball bearing may be sufficient and more cost-effective.
6. What causes camshaft bearings to go bad?
Improper alignment of the oil holes can cause inadequate lubrication, leading to wear and damage to both the camshaft and camshaft bearings over time.
7. When should cam bearings be replaced?
Cam bearings should be replaced when working on an engine block that has been newly reconditioned. The old bearings need to be removed to allow proper cleaning of the block and ensure optimal performance.
