Hilman provided an alternative lift & roll system for Keppel FELS for ENSCO Rig 102 . The cantilever beams are supported by six 1,250 ton rollers. Each roller is supported by six hydraulic cylinders nested in a sub-frame. The hydraulics ensure that each roller is under full contact during the skidding mode. When retracted, the rig does not contact the rollers resulting in no freeze-ups, beam tear-ups or huge pushing cylinders.