30311 7311E 30311JR Chrome Steel 55*120*31mm Single Row Cone and Cup Tapered Roller Bearings
55x120x31mm tapered roller bearings
,chrome steel tapered roller bearings
,single row cone cup bearings
30311 7311E 30311JR Chrome Steel 55*120*31mm Single Row Cone and Cup Tapered Roller Bearings The 30311, 7311E, and 30311JR tapered roller bearings are forged from high-grade chrome steel (GCr15/SAE 52100), which undergoes precision heat treatment to achieve a hardness of HRC 58-62. Engineered for ...