Swivel for Grove TM 875

The swivel, also identified as a rotary distributor, is a hydraulic component that enables the continuous rotation of the crane superstructure relative to the lower chassis. By maintaining an uninterrupted flow of hydraulic fluid, this assembly allows the crane operator to rotate the cab and boom while simultaneously powering the boom cylinders, outriggers, and other hydraulic systems that rely on supply lines from the carrier. The internal design features multiple individually sealed conduits to manage various hydraulic circuits, preventing fluid cross-contamination and maintaining system pressure during rotation.

This component, part number 7373000075, is engineered for fitment on Grove TM 875 and TM1500 truck-mounted cranes. It is typically positioned at the center of the turntable to serve as the primary interface for hydraulic power transmission. The unit ensures that hydraulic circuits remain isolated and pressurized regardless of the degree of rotation of the upper works.

Swivels serve as the central hydraulic junction in mobile cranes, allowing for 360-degree operation without restricting the movement of the upper assembly. By providing a sealed path for pressurized oil to pass from the stationary carrier to the rotating crane body, these units are necessary for the functional integration of the hydraulic systems across the entire machine.