... ball bearing 2,High speed 3,End cover:ZZ,RS 4,Noise level:Z1,Z2 5,C2,C0,C3... groove ball ... speed, torque, assembly, corrosion resistance and operating life. Our ball bearing product lines include: miniature & instrument bearings, dental ... Series Bore sizes 0.4375 to 1.5 inchesMiniature Ball Bearings (Bore sizes from1 to 10mm) Product ... 0.0781 to 0.375 inches high precision deep groove ball bearing