Thrust bearing

The utility model relates to a bearing, especially, relate to a thrust bearing, including blowout patche, seat circle, main stand, rolling element and housing, lug, nib and lug, nib that the upper surface interval of seat circle was provided with the arc surface be with radial distribution, and the bottom of blowout patche is provided with positioner, positioner including set up the reseing of blowout patche bottom, with reset a supplementary stand that the bottom links to each other and set up the first ball in supplementary stand, roll in supplementary stand relatively in the top of first ball, the present upper surface that encloses in bottom of first ball is located and rolls relatively between the lug, nib, the upper surface of blowout patche is provided with annular roll groove, and the top surface of housing is provided with annular opening and is provided with annular sealed lid on the opening, and the bottom surface of sealed lid is provided with the second ball, and the second ball is at roll inslot relative slip, the utility model discloses a thrust bearing, location effect is better, and can not break down.