SBB8 Plain Bearing 1/2"x7/8"x7/16" inch Bearings: Amazon.com: Industrial & Scientific
uxcell Sleeve Bearing 10mm Bore x 12mm OD x 10mm Length Plain Bearings Wrapped Oilless Bushings 6pcs: Amazon.com: Industrial & Scientific
Pacific Bearing PBC-315 Self-Aligning Single Flange-Mounted Linear Plain Bearing 1 Inch I.D, 2.25 O.D x 2.812 Long: Linear Ball Bearings: Amazon.com: Industrial & Scientific