Two-Bolt Pillow Block Bearing (UCP211) - Sparex Part S.18427Sparex Two Bolt Pillow Block Bearing (UCP211) Sparex Part No. S. 18427 This Sparex Two Bolt Pillow Block Bearing is a high quality replacement bearing designed for a variety of applications. It features a UCP211 bearing reference and is compatible with a wide range of machinery. Key Features: Bearing Reference: UCP211 Bearing Type: UCPBi (mm): 55. 6 Inner Diameter (): 55mm Seal Type: 2RS Metric or Imperial: Metric Alternative to: 129991 Related