Spindle bearings are the rotating axis of a machine and everything that does along with it. Mostly, the spindle bearings along with everything attached to the spindle encompasses into the definition. However, it would be imperative to remember how critically imperative effective spindle bearings have been for the life of the machine, its efficiency, its performance, and the productivity of any business that relies on it.
However, when you consider what would make a spindle bearing effective, it would come down to friction. From increased quality and lower cost, you could make the most of its functionality with lower friction.