Custom Hydraulic Cylinders for Metallurgical & Heavy Machinery

For the textile and nonwovens industry, Tianjin Uranus Hydraulic Machinery Co., Ltd. designs custom hydraulic cylinders for applications such as calenders, winders, looms, and needling machines. As a national high-tech enterprise with over 30 years of experience, we build cylinders that operate reliably in dusty, lint-filled environments, often with high cycle rates and precise tension control. Our custom cylinders for calender rolls (used to heat and bond nonwoven fabrics) must apply uniform pressure across the roll width. These cylinders are typically large, with bores up to 300 mm and strokes up to 1,000 mm. We use hard chrome-plated rods and bronze bearings, with double wiper seals to keep out lint. For a German nonwovens machine builder, we supplied custom loading cylinders for a calender. The cylinders are equipped with load cells for closed-loop pressure control and have achieved pressure uniformity of ±1 percent across the roll. For winders, our custom cylinders control the tension of fabric as it is wound onto a roll. These cylinders must have very low friction and hysteresis for accurate tension control. We offer cylinders with PTFE-based bearings and integrated pressure transducers. For a US-based textile manufacturer, we supplied custom tension control cylinders for a winder, with a bore of 63 mm and a stroke of 300 mm, operating at 50 bar. The cylinders have been in service for over 6 years with no loss of accuracy. For needling machines (used to produce nonwoven fabrics), we provide custom cylinders that drive the needle beam up and down at high frequencies (up to 2,000 strokes per minute). These cylinders must be extremely durable and have very low mass. We use aluminum cylinders with titanium rods, and the seals are low-friction PTFE compounds. For a Chinese nonwovens machine manufacturer, we supplied custom needling cylinders for a 5-meter-wide machine. The cylinders have a bore of 80 mm and a stroke of 50 mm, and they have achieved over 1 billion cycles in testing. Our design process includes dynamic simulation to optimize the cylinder's natural frequency. We provide full documentation, including a test report and a recommended maintenance schedule. For a custom cylinder for your textile or nonwovens application and a quote, please contact our engineering team.