Radgelenken

Radgelenken are mechanical joints that connect a wheel to the supporting structure of a vehicle or machine, allowing relative motion between the wheel and the chassis. They are designed to transmit torque and load while accommodating steering and suspension movements. The term encompasses several specific joint types, such as ball joints, universal joints, and constant-velocity joints, each optimized for particular motion requirements and load conditions.

Ball joints connect the wheel hub to the suspension arm with a spherical bearing that permits rotation in multiple directions. Universal joints enable transmission of rotation through an angle with two intersecting axes, while constant-velocity joints allow smooth torque transfer at varying angles, commonly used in drive shafts for front-wheel-drive configurations.

Construction and operation typically involve a bearing race, rolling elements (such as balls or needles), a housing, seals, and lubrication. Radgelenken are exposed to dirt, water, and repeated load cycles, so seals, appropriate lubricants, and material choices are important for durability and reliable performance. Proper design aims to minimize play, reduce friction, and maintain alignment under dynamic conditions.

Applications include automotive steering and suspension systems, as well as various forms of heavy machinery and some industrial wheel assemblies. In each case, radgelenken must tolerate dynamic loads, steering angles, and suspension travel while providing predictable handling and long service life.

Maintenance considerations focus on detecting wear or contamination, ensuring adequate lubrication, and verifying correct mounting torque. Replacement is typically indicated by excessive play, unusual noises, loss of steering precision, or leakage of lubricants.

See also: ball joint, constant-velocity joint, universal joint, steering knuckle, wheel hub, suspension.