... ,RS 4,Noise level:Z1,Z2 5,C2,C0,C3... groove ball bearing HX Bearings manufacture precision ball bearings from 3mm ... , speed, torque, assembly, corrosion resistance and operating life. Our ball bearing product lines include: miniature & instrument bearings, dental bearings, ... 800mmInch Series Bore sizes 0.4375 to 1.5 inchesMiniature Ball Bearings (Bore sizes from1 to 10mm) Product TablesMetric Series ...