NTN SNR Plummer Block Bearing Insert (ES210) - Sparex Part S.155518NTN SNR Plummer Block Bearing Insert (ES210) SP 155518 This NTN SNR Plummer Block Bearing Insert is a high quality, durable component designed for a variety of applications. It features a locking collar bearing type and is compatible with a range of machines and models. Key Features: Brand: NTN SNR Bearing Reference: ES210 Inner Diameter (ID): 50mm Outer Diameter (OD): 90mm Width: 43. 7mm Seal Type: 2RS Metric or Imperial: Metric Alternative to: 18179