Deep groove ball bearings mainly take radial load as well as take moderate axial load. With less coefficient of friction, high limiting speed, larger size range and variations of structure, they are suitable for precision instruments, low noise motor,automobile, motorcycles, and other common machinery, asa widely used type of bearings in machinery industuy. Series inner Diameter Structure 61800 50-320mm Z,ZZ,RZ,2RZ 61900 50-280mm Z,ZZ,RZ,2RZ,N,NR,ZN, 16000 50-260mm 6000 50-260mm Z, ZZ,RZ,2RZ,RSI,2RSI, 6200 50-220mm 6300 50-190mm 6400 50-100mm miniature bearing 1-10mm