Heavy-duty hydraulic jacks of the ECO-Jack® XR series do, compared with the ECO-Jack® S-series, require an external 700 bar pump for operation. This facilitates and accelerates working in confined conditions and when using several jacks at the time. The compact design without a pump leads to a weight reduction of up to 30% and allows for easy handling for optimal use under extreme conditions. External pumps allow simultaneous operation on several ECO-Jack® XR-Series machine jacks by one person. The ECO-Jack® XR-Series has an integrated spring return system, which always returns the machine lifter automatically to the starting position.