by 
The Curious Bag
-
Friction is the enemy of moving metal parts rubbing together and requires a solution to ameliorate the damage. One such method is a bearing that will absorb friction by providing a polished surface on which a lubricant will form a film and divert the heat from the metal through the liquid. A crankshaft thrust bearing is one type of bearing.
Function
Thrust bearings absorb axial loads presented in a moving shaft. Because there has to be clearance to fit parts together, there is an opportunity for any rotating shaft to move along its length. This is the axial load.
Location
Engineers design a shaft with bearings to contain the radial load and build into that design a place for thrust bearings. They can be on either end, in the middle or all three depending on the application. The radial load is the force put on the shaft by rotating in place.
Construction
Bearings are generally made from steel. In low-load applications such as electric motors, bronze is sometimes used.
Maintenance
The engine oiling system lubricates thrust bearings. They require lubrication maintenance as directed by the manufacturer.
Role
The thrust bearing all but eliminates the end-to-end movement of the shaft, often referred to as end-play. It accomplishes this by riding against a special casting in its housing called a boss.
Source:
Bearings Reference Center: Bearings 101
Art Carr Performance Parts: Thrust Bearing Failure
More Information:
RELATED QUESTIONS
Copyright 2023, Wired Ivy, LLC