Thrust bearing is used for special inherit the axial bearing, is the direction of vertical shaft bearings. Thrust bearing thrust bearings. Also called thrust bearings are generally consists of two thrust washers or more thrust washers and several roller, general thrust washers and slice into shaft, roller is generally the most common form of iron and copper maintains into the whole. The most common type of bearing steel ball type thrust bearings are. Thrust ball bearings is a separate type bearings, shaft, and can seat, steel components. Axis is combined with the axis of the contractor, seat is combined with the housing holes, and the rings have between axial clearance, Thrust ball bearings can only carry axial load, i.e.one-way thrust ball bearings are only bear a direction of axial load, two-way thrust ball bearings can withstand two directions of axial load, Axial thrust ball bearings can limit the radial displacement and speed is very low, i.e.one-way thrust ball bearings can limit and shell of a direction of the axial displacement, two-way bearing can limit the axial displacement of the two directions. Thrust roller bearings are used for axial load of axial and radial load combination, but shall not exceed the radial load 55 percent of the axial load. Compared with other thrust roller bearings, the bearings, low friction coefficient, and has high speed adjustable performance. The stick for 29,000 type bearing the unsymmetrical spherical roller, can reduce roller and groove in the work of the relative sliding, and the big diameter roller, number, and the load capacity of roller, usually by high oil lubrication, individual low-speed condition available grease. In the design, should choose, 80,000 type cylindrical roller thrust bearing, tapered roller bearings, thrust 90,000 type and AXK type thrust needle bearing, can withstand one-way axial load, it than thrust ball bearing axial load capacity and rigidity, occupy axial small space. Cylindrical roller thrust bearing and thrust needle bearing applicable occasions with low speed tapered roller bearings, thrust speed slightly higher than cylindrical roller thrust bearing.