Iron Sealed Ball Bearings, Deep Bearing Easy to Install Radial and Axial Load for Linear Motion Equipment 625 Iron Sheet Seal: Amazon.com: Industrial & Scientific
SKF 6322/C4 Radial Bearing, Single Row, Deep Groove Design, ABEC 1 Precision, Open, C4 Clearance, Standard Cage, 110mm Bore, 240mm OD, 50mm Width: Deep Groove Ball Bearings: Amazon.com: Industrial & Scientific