Custom Hydraulic Cylinders for Metallurgical & Heavy Machinery

In the field of robotics and factory automation, Tianjin Uranus Hydraulic Machinery Co., Ltd. offers custom hydraulic cylinders that provide high power density, precise position control, and fast response times. As a national high-tech enterprise with over 30 years of experience, we design cylinders that are smaller, lighter, and more accurate than standard industrial cylinders, making them ideal for robotic arms, hydraulic parallel robots, and heavy-duty automation cells. Our custom cylinders for robotics typically feature compact designs with integrated manifolds to eliminate external hoses. We use high-strength aluminum or titanium for the barrel and end caps to reduce weight, and the piston rods are made from hardened stainless steel. Sealing systems are selected for low friction and long life, with options for hydrostatic bearings for zero-friction operation. For a European automotive assembly line, we supplied custom cylinders for a hydraulic robot used to position heavy subframes during welding. The cylinders have a bore of 80 mm, a stroke of 500 mm, and operate at 280 bar. They are equipped with integrated position sensors and servo valves, achieving positioning accuracy of ±0.05 mm at speeds up to 500 mm/s. The cylinders have been in service for over three years with no failures. In heavy-duty automation, such as press feeding and die handling, our custom cylinders are used for linear transfer systems. These cylinders must have high rigidity and the ability to stop precisely at multiple positions. We offer cylinders with multiple position sensing (using magnetostrictive sensors) and programmable cushioning. For a US-based press automation company, we provided custom cylinders for a tri-axis transfer system. The cylinders feature a tie-rodless design with a magnetically coupled piston to minimize length, and they use an external linear encoder for feedback. The system achieved cycle rates of 30 parts per minute with exceptional reliability. For collaborative robots (cobots) that work alongside humans, we offer custom cylinders with integrated pressure sensors and safety-rated position monitoring. These cylinders automatically reduce force or stop if an obstruction is detected, complying with ISO/TS 15066. For a Japanese cobot manufacturer, we developed a small-bore cylinder (25 mm bore, 100 mm stroke) with a built-in load cell and an integrated servo valve. The cylinder can be controlled with very low force thresholds, enabling safe human-robot interaction. Our design process includes dynamic simulation to optimize the cylinder's natural frequency and response time. We also offer custom mounting interfaces, including flange, trunnion, or clevis, to match your robot's joint design. All cylinders are tested for positioning accuracy, hysteresis, and repeatability. We provide a calibration certificate and a test report. For a custom cylinder for your robotics or automation application and a quote, please contact our engineering team.