CSA201 - 12mm Bore Cylindrical Insert Bearing w/Locking CollarFYH UC2018D11 1 2" inch ND SS Insert Mounted Bearing CSA201 12mm Bore Cylindrical Insert Bearing w Locking Collar Insert with Eccentric Locking Collar and Dust Seals on Both Sides, Cylindrical OD and greasable CSA201 VXB Bearing. Item: CSA201 Type: Mounted Insert Ball Bearing Quantity: One Bearing Locking Collar Black Oxide Coated insert Hard Chrome Coated Insert High Temperature Insert 400F Triple lip labyrinth seal Boor : 12mm