1-3/8" Bearing UCF207-22 + Square Flanged Housing + Mounted BearingUCF207 22 Square Flanged Bearing Unit 1 3 8" ID Heavy Duty 4 Bolt Mount With Set Screws UC207 22 Insert The UCF207 22 is a rugged four bolt flange mounted bearing unit with a 1 3 8" inner diameter and cylindrical bore secured by set screws. Featuring a round cartridge style back for precise alignment, it's perfect for use in rotating drums, rollers, and machinery requiring stable, accurate bearing positioning. Type: Four bolt square flanged mounted