3/4" UCF204-12 Mounted Bearing Insert + Square Flanged Cast HousingUCF204 12 Flanged Mounted Bearing 3 4" ID 4 Bolt Square Flange Set Screw Mount The UCF204 12 is a heavy duty, four bolt flange bearing unit designed for accurate alignment and stable mounting. With a cylindrical bore and set screws, it's ideal for supporting rotating drums, rollers, and shafts where precision placement matters. Inner Diameter: 3 4" Mount: Square 4 bolt flange with round cartridge backing Bore Type: Cylindrical with set screws Bolt