High Temperature Deep Groove Ball Bearings Forged Steel Mechanical Parts Deep groove ... in double directions. They can be applied in situations where high-rotating speed and low noise and low vibration are required ... ,C4,C5Precision Rating:P0, P6, P5Vabration:Z1, Z2, Z3Grease:Oil,grease,dry, per your request,Application:chemical, semi-conductor, valve & pump ...