... Thrust roller bearings: 1.GCr15, GCr15SiMn, G20Cr2Ni4A 2.Precision level:P0,P4,P5,P6 3.Vibration:Z1V1,Z2V2,Z3V3 1). Flat-race thrust ... is low. The prime advantage of flat-race thrust bearings is they permit eccentricities, because there are ... Thrust bearing characteristics are identical to those of the one-directional bearing, except thrust bearings can support thrust in both directions. Thrust roller ...