Detailed Product Description Deep Groove Ball bearings1- Bore diameter from 4mm~90mm;2- Bearing range: 1) 60 series: 604, 605, 606, 607, 608, 609, 6000, 6001 ... , 6009, 6010, 6011, 6012, 6013, 6014, 6015, 6016, 6017, 6018; 2) 62 series: 624, 625, 626, 627, 628, 629, 6200, 6201 ... , 6209, 6210, 6211, 6212, 6213, 6214, 6215, 6216, 6217, 6218; 3) 63 series: 635, 6300, 6301, 6302, 6303, 6304, 6305, 6306 ...