... Steel ,Carbon steel,Stainless steelMaterial:GCr15 GCr15SiMnPrecisionP0,P6,P5,P4SealingOpen,Z,2Z,RS,2RSClearance:C2 ,C3, C4 ,C5Quality standardISO9001:2000 standardServiceOEM ... tool, high-powered marine gear case, oil rig, vertical machine. Chinese thrust roller bearing 81108 81109 81110 81112 81113 81114 81115