1.Size:60 62 63 67 68 69 1600 series,etc. 2.Tolerance:ABEC-1 ABEC-3 ABEC-5 3.ISO 9001:2008 4.Accept paypal Deep groove ball bearingFor deep groove ball bearings, if the bearing load is too small during operation, slippage occurs between the balls and raceways, which may result in smearing. The higher the weight of balls and cage, the higher this tendency becomes,especially for large bearings. If ...