Angular contact ball bearing 1. High quality 2. low noise and high speed 3. durable Detailed Description of ... retaining units which consist of solid inner and outer rings.2. Series: 7002---7010 7201—7210 5200---5210 5300---53083. The axial ... . Be able to work at a high speed. Model7000C series,7000AC series,7000B seriesID15mm-50mmOD32mm-90mmMaterialGCr15,stainless steel,ZrO2,Si3N4,carbon steel ...