What is a slewing bearing? A slewing bearing or slewing ring (also called a turntable bearing) is a rotational rolling-element bearing that typically supports a heavy but slow-turning or slowly-oscillating loads in combination (axial, radial and moment loads), often a horizontal platform such as a conventional crane, a swing yarder. How does an excavator swing bearing work? In an excavator, a hori...

Excavators are heavy construction equipment consisting of a boom, arm, bucket, and cab on a rotating superstructure atop an undercarriage with tracks or wheels. These machines are used mainly for digging purposes as well as various lifting and carrying tasks in various applications. Excavators are heavy construction equipment consisting of a boom, arm, bucket, and cab on a rotating superstructure ...