Set of 2 Sealed Ball Bearings 17mm ID x 47mm OD x 14mm Load Bearing 6303-2RS: Amazon.com: Industrial & Scientific
NTN 6303 C3 Deep Groove Ball Bearing 17x47x14mm Open, NO Seals: Amazon.com: Industrial & Scientific
NTN Bearing 6303 Single Row Deep Groove Radial Ball Bearing, Normal Clearance, Steel Cage, 17 mm Bore ID, 47 mm OD, 14 mm Width, Open: Amazon.com: Industrial & Scientific