In order to test its design, Rexroth developed a Subsea test power unit equipped with a water-proof motor/pump assembly. This drives an axial piston motor and hydraulic cylinder via an encapsulated valve control. The hydraulic system comes in a pressure compensated design. Rexroth tested the equipment in a unique pressure chamber facility and successfully demonstrated the suitability of its hydraulic components to a depth of 6,000 meters below sea level.
Lee Hinchcliffe, Rexroth's sales manager for Marine & Offshore says: “We have successfully fitted Rexroth adapted components on machines such as the Subsea Crawler from Aker Wirth [pictured]. We are the first to achieve such a high performance under harsh testing conditions which makes Rexroth components vital for deep sea applications.”