... your needs5. Can provide small & miniature standard and non-standard ball bearings.low vibration, low noise, high precision and durableApplicationUsage: household ... , medical facilities, communication devices, office facilities and motor industrydeep groove ball bearingWe have Open, Z, ZZ, RS, 2RS,RZ, 2RZ.N ... Vibrating grades are divided into Z1V1,Z2V2,Z3V3. Deep groove ball bearing(china bearing)