Custom Hydraulic Cylinders for Metallurgical & Heavy Machinery

For the marine propulsion and steering systems, Tianjin Uranus Hydraulic Machinery Co., Ltd. offers custom hydraulic cylinders for azimuth thrusters, rudder propellers, and stabilizer fins. As a national high-tech enterprise with over 30 years of experience, we design cylinders that are corrosion-resistant, compact, and capable of operating under high dynamic loads in a marine environment. Our custom cylinders for azimuth thruster steering are used to rotate the entire thruster unit. These cylinders must provide smooth, precise rotation and withstand the forces from propeller thrust. We use duplex stainless steel for the rod and cylinder body, and we incorporate integrated rotary position sensors. For a Dutch marine propulsion manufacturer, we supplied custom steering cylinders for a 2.5 MW azimuth thruster. The cylinders have a bore of 100 mm and a stroke of 500 mm, operating at 210 bar. They have been in service for over 7 years in harbor tugs. For rudder propeller systems (e.g., Z-drives), we provide custom cylinders for both steering and trim control. These cylinders must be very reliable as failure could lead to loss of steering. We use redundant seals, integrated locking valves, and manual override capabilities. For a Finnish shipbuilder, we supplied custom cylinders for a Z-drive on a passenger ferry. The cylinders have a bore of 125 mm and a stroke of 600 mm, and they are certified by DNV. For stabilizer fins, we provide custom cylinders that extend and retract the fins, and also control the fin angle. These cylinders must be very compact to fit into the ship's hull. We use high-strength steel with a corrosion-resistant coating, and we incorporate position feedback for automatic fin control. For a Norwegian shipyard, we supplied custom stabilizer cylinders for a luxury yacht. The cylinders have a bore of 80 mm and a stroke of 400 mm, operating at 250 bar. They have been in service for over 5 years with no issues. Our manufacturing process includes material certification, NDT, and testing under simulated sea conditions. We provide a full documentation package including classification society certificates. For a custom cylinder for your marine propulsion or steering application and a quote, please contact us.