... ,Noise level:Z1,Z2 5,C2,C0,C3... groove ball bearing HX Bearings manufacture precision ball bearings from 3mm to 500mm O.D. Production ... load, speed, torque, assembly, corrosion resistance and operating life. Our ball bearing product lines include: miniature & instrument bearings, dental bearings, large diameter ... Series Bore sizes 0.0781 to 0.375 inches high precision deep groove ball bearing