What is the role of the separator in an anti-friction bearing?

The role of the separator in an anti-friction bearing, commonly referred to as a cage, is crucial for maintaining the functionality of the bearing. The separator's primary function is to separate the rolling elements, which are usually balls or rollers, ensuring that they are properly spaced apart. This spacing is essential because it helps to minimize friction and wear between the rolling elements, which in turn increases the bearing's efficiency and lifespan.

By keeping the rolling elements evenly distributed, the separator helps maintain the correct geometry of the bearing, allowing for smooth rotation and reducing the risk of damage from collisions between the elements. An effective separator also contributes to the overall stability of the bearing during operation. This role distinguishes it from other components, ensuring that the rolling elements can move freely while still being contained within the bearing assembly.