run in high limited rotation speed low frication and low noise low axial section height thrust roller bearing Ring materialChrome Steel ,Carbon steel,Stainless steelMaterial:GCr15 GCr15SiMnPrecisionP0,P6,P5,P4SealingOpen,Z,2Z,RS,2RSClearance:C2 ,C3, C4 ,C5Quality standardISO9001:2000 standardServiceOEM service, Customer design service, buyer label servicePayment termsA:100% L/C at sightB: 50% T/T ...