Plummer Block Bearing Insert (UC209-28) - Sparex Part S.18588Sparex Plummer Block Bearing Insert (UC209 28) S. 18588 This Sparex Plummer Block Bearing Insert is a high quality replacement part designed for durability and reliability. It features a 1 3 4" inner diameter (ID), 85mm outer diameter (OD), and a width of 49. 2mm. This bearing insert is an alternative to part number 129702 and is suitable for a wide range of applications. Key Features: Bearing Reference: UC209 28 Bearing Type: UC Brand: Sparex Inner