Drehkränze

Drehkränze, also known as slewing rings or slew bearings, are specialized rolling-element bearings designed to support axial loads, radial loads, and tilting moments simultaneously. They are typically constructed as two rings, an inner and an outer, with a raceway for rolling elements such as balls or rollers. These rolling elements are often separated by a cage or spacer to ensure even distribution and prevent friction.

The primary function of a Drehkupplung is to enable rotational movement while withstanding significant forces. This makes them ideal for applications where a rotating component needs to be supported securely. They are commonly found in heavy machinery and equipment. Examples include excavators, where they connect the boom and arm to the main body, allowing for slewing motion. Cranes also utilize Drehkränze to rotate the superstructure.

Other significant applications include wind turbines for yaw and pitch control, automated storage and retrieval systems, robotic arms, and even some specialized vehicle designs. The design of a Drehkupplung can vary depending on the specific load requirements and environmental conditions. They can be sealed to protect against dust and moisture, and some may incorporate internal gearing for direct drive rotation. The ability to handle complex load combinations in a single component makes Drehkränze a crucial element in many engineering solutions.