Deep groove ball bearing: 1.Certificate:ISO9001:2000 2.OEM service 3.Super precision 4.Best quality and fastest service. Deep groove ball bearings mainly take radial load ... .Good C.Fair D.Poor Series:SeriesBore diameterVariant structure600010~120Z,2Z,RZ,2RZ,RS1,2RS1,N,NR,ZN,RZN620010~120Z ... ,2RZ,RS1,2RS1,N,NR,ZN,RZN630010~120Z,2Z,RZ,2RZ,RS1,2RS1,N,NR,ZN,RZN640010~120N,NRParameter: ...