Roller Bearings Features: 1) Materials: AISI52100, AISI440C, AISI420C 2) Applications: motorcycles, automobiles, pRoller Bearings Features: 1) Materials: AISI52100, AISI440C, AISI420C 2) Applications: motorcycles, automobiles, power tools, engineering and printing machinery, machine tool industry 3) Rolling body: rollers