deep groove ball bearing 17x70x23 :1,ABEC-3,5;Z2V2,Z3V3 2,High speed 3,End cover:ZZ,RS 4,Noise level:Z1 ... ,C3.. Lily bearing is a specialized manufacturer of deep groove ball bearing 17x70x23.Features:1),Shield / closure: Open,Teflon Sealed, ... Bearings Open Bearings Rubber Seals Bearings Teflon Sealed Bearings Flanged Ball Bearings Thrust Ball Bearings Hybrid Ceramic Bearings Hybrid Ceramic Bearings