June 2026

Introduction A slewing bearing — also called a slewing ring or turntable bearing — is a large-diameter rolling-element bearing capable of handling simultaneous axial, radial, and moment loads. You’ll find them in excavators, tower cranes, wind turbine yaw systems, radar antennas, and tunnel boring machines. Selecting the wrong slewing bearing leads to premature failure, costly […]

Introduction A slewing bearing — also called a slewing ring or turntable bearing — is a large-diameter rolling-element bearing capable of handling simultaneous axial, radial, and moment loads. You’ll find them in excavators, tower cranes, wind turbine yaw systems, radar antennas, and tunnel boring machines. Selecting the wrong slewing bearing leads to premature failure, costly

Introduction Figure 1: Bearing Dimension Measurements – Bore (d), Outer Diameter (D), Width (B) This guide covers everything you need to know about bearing size chart. Whether you’re an engineer specifying bearings for a new design, a maintenance technician troubleshooting an existing application, or a procurement professional sourcing alternatives, this article gives you the technical

Complete guide to bearing selection: load type, speed, size, material, ABEC grade, sealing, and mounting. Includes size chart and selection checklist.