Double Thrust BallThrust Bearings Spherical Seat Type: These bearings consist of five parts, a top, bottom and middle platewith annular grooves in them and two caged ball bearing assemblies thatare sandwiched in between them. Assembly and mounting is a simpleoperation as the parts are separate. They support axial loads in twodirections. Clearance is provided in the bore of Centre of the racewaysto allow for alignment.