FYH Bearing UCF308 40mm Square Flanged Mounted BearingsUCF308 Square Flanged Mounted FYH Bearing Cylindrical bore (with set screws) 40mm Inner Diameter Bearing This heavy duty four bolt flange unit has a round cartridge on the backside of the flange which allows for precise mounting and alignment. Applications Rotating drum, rotating roller, precise mounting accuracy is required Item: UCF308 FYH Ball Bearing Type: Mounted FYH Ball Bearing Bolt Size: M16 Bearing Inner Diameter: 40mm Bearing No: UC308 Basic