we are offering precision machine, tool spindle bearing. product description:precision machine tool spindle bearing, also called bearing for precision machine tool spindle, is angular contact ball bearing to be specially usable forprecision machine tool spindle with high speed rotation product specifications:products range: bore diameter 3mm-12mmstructure design: open, with shield and flangedsuper-high precision level p2 (abec 9) & high precision level p4 (abec 7) high rotating speed, low noise, low vibration, working for long lifeodm according to the customers drawings & requirementspacked carefully in plastic-tube, or in vacuum plastic-film, then packed in paper boxcould pack well according to customers special requirements