Detailed Product Description Deep Groove Ball bearings1- Bore diameter from 4mm~90mm;2- Bearing range: 1) 60 series: 604, 605, 606, 607, 608 ... , 6009, 6010, 6011, 6012, 6013, 6014, 6015, 6016, 6017, 6018; 2) 62 series: 624, 625, 626, 627, 628, 629, 6200, 6201 ...