The invention discloses a planar needle roller
thrust bearing with gaskets embedded into a plastic
retainer. The planar needle roller
thrust bearing comprises a rolling body
assembly and two gaskets, wherein the two gaskets are respectively embedded and fixed on two sides of the rolling body
assembly; the rolling body
assembly comprises the plastic
retainer and needle rollers; a plurality of needle roller notches are formed in the plastic
retainer and are arranged in the needle roller notches; a seam allowance ring groove is formed in each of two sides of the plastic retainer; each
gasket is arranged in the corresponding seam allowance ring groove; a circle of seam allowances are formed in the groove wall, close to the circle center, of each seam allowance ring groove; a circle of inner chamfers are arranged on the inner circumference of each
gasket; the inner chamfers are matched with the seam allowances. In the way, according to the planar needle roller
thrust bearing with the gaskets embedded into the plastic retainer, the problems of missing installation of thrust gaskets and missing of needles are solved, and direct
rubbing of the needle rollers and the retainer against the working surface is reduced, so that the service life of the bearing is prolonged.