Description: Single-row, pre-lubricated, regular accuracy.Deep Groove Ball Bearings are some of the extensively used rolling bearings. They are used to house radial and axial loads in both directions.With small friction and high-limit speed, Ball Bearings are cost-effective and require little maintenance.Chromium Steel (GCr15) made with heat treating, presents excessive and uniform hardness, nice wear resistanceSuitable for every kind of business equipment, micro motor, small rotary motor, office kit and so on.