Hydraulic swivel and electrical collector for P&H T400XL

The hydraulic swivel and electrical collector, identified by part number 945J82-6, serves as the central interface between the fixed carrier and the rotating upper structure of the crane. This dual-function component allows for the uninterrupted flow of hydraulic oil through internal ports while simultaneously transmitting electrical power and control signals through a collector ring assembly. By integrating these two systems, the unit prevents hydraulic hoses and electrical wiring from tangling during continuous rotation of the crane cab and boom.

This assembly is specifically configured for the P&H T400XL rough-terrain crane. The hydraulic section utilizes internal seals to maintain pressure separation between multiple fluid circuits, while the electrical section employs contact rings and brushes to maintain a steady circuit. Proper operation of this component is necessary to ensure the operator retains full control over hydraulic functions and electrical systems, including sensors and lighting, regardless of the rotation angle of the superstructure.

In heavy machinery, a swivel or rotary manifold acts as a bridge for hydraulic circuits, allowing pressurized oil to reach actuators mounted on rotating platforms. Similarly, an electrical slip ring or collector ensures that power and data signals remain connected between stationary and rotating components, which is essential for the functionality of modern crane control systems.