634-2RZ Sealed Ball Bearing ID 4mm OD 16mm Width 5mm634 2RZ Deep groove ball bearings single row Radial Bearing 4x16x5 634 2RZ Sealed Deep groove ball bearings single row Radial Bearing 4 mm ID x 16 mm OD x 5 mm Wide. Item Sku : 634 2RZ Brand : VXB Type : Deep groove ball bearings Inner (ID) : 4mm Outer (OD) : 16mm Width : 5mm Inner Inch : . 157 Inch Outer Inch : . 63 Inch Width Inch : . 197 Inch Size : 4mm x 16mm x 5mm Size Inch : . 157" x . 63" x . 197" Dynamic load : 1. 11 kN Static load : . 38 kN