NTN Bearing 6304 Single Row Deep Groove Radial Ball Bearing, Normal Clearance, Steel Cage, 20 mm Bore ID, 52 mm OD, 15 mm Width Specifications for this item Bearing Number 6304.0 Body Outside Diameter 52.0 millimeters Bore Diameter 20.0 millimeters Width: 15 mm Brand Name NTN Bearing Dynamic Load Capacity 15900 kilograms Ean 4547359005394 Inside Diameter 20.0 millimeters Item Weight 5.1 ounces Manufacturer Series Number 63.0 Material Carbon Chrome Steel