Thrust ball bearings

This type of bearings is separable,which can only carry axial load. the
single direction bearings of them can only carry axial load in one
direction,while the double can carry alternating axial load in either
direction.befor using they have to be preloaded,the thrust ball
bearings are used in lathe centers,automobile clutches,redu-cers and so
on.the double diretion angula contact thrust ball bearings are suitable
for machine tool spindles,while the single are used to support ball
screws.