Insert Ball Bearing. Insert Ball Bearings are designed in almost the same way as deep groove ball bearings, except that the outer ring is spherical. Their design allows the bearings to be easily mounted in a housing block and be self-aligning.

Insert bearings (Y-bearings) Insert bearings (SKF Y-bearings) are based on sealed deep groove ball bearings in the 62 and 63 series, but have a convex outer ring and in most cases an extended inner ring with a specific locking device, enabling quick and easy mounting onto the shaft.