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🚐 Slewing Rings in Articulated Buses: Key to Safe and Efficient Mobility

Articulated buses have become indispensable in urban transport. To ensure they can manoeuvre safely, comfortably, and efficiently through tight corners or crowded city centres, a discreet yet highly stressed component is essential: the #slewingring in the articulation system.
Its functions are complex:

• Mechanical precision: Transmits immense forces and loads while at the same time enabling controlled movement between the front and rear sections of the bus.

• Lightweight design as a key factor: Modern constructions significantly reduce system weight, directly lowering energy consumption and increasing range.

• Adaptation to new drivetrains: With emerging propulsion systems, requirements regarding weight, installation space, and energy efficiency are on the rise.

• Compact design: Space-saving constructions allow use even in the confined installation space of modern articulated buses.

• Reliability & maintenance: Slewing rings must not only be durable but also designed for fast and efficient servicing.

A key advantage of slewing rings in articulated buses lies in the use of four-point contact ball bearings. These are capable of simultaneously absorbing radial forces, axial forces in both directions, and tilting moments – thereby combining the functions of multiple #bearings into a single component. This functional integration enables more compact and lightweight designs, which is particularly important for electric buses, where every kilogram saved and every centimetre of installation space counts.

In addition, four-point contact ball bearings offer high rigidity and moment load capacity, ensuring reliable articulation guidance even at large articulation angles and during dynamic driving manoeuvres. Thanks to the even distribution of loads, service life is extended while friction and wear are reduced – a clear advantage for operational safety and ease of maintenance in daily use.

👉 At KIS, we firmly believe that a slewing ring is far more than just a hinge. It is an integral system component that combines safety, efficiency, and sustainability in public transport. Our application technology experts are ready to support you in designing the suitable slewing ring for your specific application!


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