The Category A freight wagon buffer features a highly robust housing combined with a reinforced sleeve incorporating a solid collar at the open end. Its compact spring design enables a high sleeve wall thickness, enhancing overall stability and durability.

The high stiffness of the sleeve and plunger minimizes internal friction losses, significantly reducing compressive forces during operation. Both variants (30 kJ and 40 kJ) combine high energy absorption with low compressive forces, delivering speed-dependent energy absorption and a progressive characteristic.

Equipped with a maintenance-free polymer spring and a lifetime-optimized anti-rotation device, the buffer ensures reliable operation while reducing failure rates and minimizing maintenance requirements.