Custom Hydraulic Cylinders for Metallurgical & Heavy Machinery

For the die casting industry, Tianjin Uranus Hydraulic Machinery Co., Ltd. offers custom hydraulic cylinders for the injection, core pulling, and ejection functions on cold chamber and hot chamber die casting machines. As a national high-tech enterprise with over 30 years of experience, we design cylinders that withstand high temperatures from molten metal, high speeds for injection, and high pressures for clamping. Our custom injection cylinders for cold chamber die casting machines must operate at very high speeds (up to 10 m/s) to fill the die before metal solidifies. We use a specially designed piston with a lightweight construction, low-friction seals, and a high-hardness rod to resist galling. The cylinder body is made from high-strength steel with a water-cooling jacket to maintain seal temperature. For an Italian die casting machine builder, we supplied custom injection cylinders for a 4,000-ton machine. The cylinder has a bore of 200 mm and a stroke of 1,200 mm, achieving an injection speed of 8 m/s. It has been in service for over 8 years. For core pulling cylinders, we provide compact cylinders that operate in the die space, exposed to radiated heat. We use heat-resistant seals (Viton or Kalrez), and we incorporate water cooling in the cylinder head. For a US-based die caster, we supplied custom core pull cylinders for a transmission case die. The cylinders have a bore of 50 mm and a stroke of 150 mm, and they operate at 250 bar. They have achieved over 500,000 cycles without seal failure. For ejector cylinders, we provide cylinders that push the casting off the die. These cylinders must operate reliably in a harsh environment with metal splatter and release agents. We use stainless steel rods and a protective boot. For a Chinese die casting facility, we supplied custom ejector cylinders that have been in operation for over 6 years with minimal maintenance. Our manufacturing process includes hardness testing of the rod, pressure testing, and functional testing at elevated temperatures. We provide a test report and a one-year warranty. For a custom cylinder for your die casting application and a quote, please contact our engineering team.