The High Speed Rotary Union is a precision-engineered rotary joint designed to facilitate the efficient and leak-free transfer of fluids such as air, hydraulic oil, water, and coolant at elevated rotational speeds. These rotary unions are essential components in industries requiring rapid rotation combined with fluid transfer, including machine tools, automotive manufacturing, aerospace, and industrial automation. Engineered with low-friction bearings and advanced sealing technology, this joint ensures reliable performance at up to 10,000 RPM—ideal for high-speed manufacturing equipment, automotive drivetrains, and aerospace applications. Unlike standard unions, its dynamic balance design minimizes vibration and heat generation, making it essential for operations where speed and durability are non-negotiable.
Typically designed to operate at speeds ranging from 1,500 up to 42,000 RPM, depending on the model and application, ensuring smooth fluid transfer in high-speed machinery.
Suitable for moderate to high pressures, commonly up to 400 bar (5,800 psi), accommodating demanding hydraulic and pneumatic systems.
Utilizes mechanical face seals such as carbon graphite-to-carbide seals and balanced seal designs to minimize leakage and reduce friction, enabling low starting torque and extended seal life.
Equipped with high-precision radial or angular contact ball bearings that support high-speed rotation and reduce wear, enhancing durability and performance.
Often manufactured using corrosion-resistant materials like stainless steel, nickel-plated steel, or specialty alloys such as Hastelloy or Super-Duplex stainless steel to withstand harsh environments and media compatibility.
Many models, such as the 300 Series, offer small envelope dimensions ideal for applications with limited space while maintaining high speed and pressure capabilities.
Suitable for transferring air, hydraulic oil, water, steam, nitrogen, and other fluids in various industrial processes.
Delivering coolant and lubricants at high speeds for precision machining
Transferring hydraulic oil and compressed air in rotating equipment
Cooling and lubrication in high-speed rotating assemblies
Handling fluids in rotating drums and conveyors
Cooling and hydraulic fluid transfer in turbines and generators
Enables high-speed rotation with minimal vibration and torque
Provides leak-free fluid transfer under high-pressure and high-temperature conditions
Reduces maintenance needs due to durable seals and bearings
Supports a wide range of fluids, including coolants, hydraulic oils, compressed air, and steam
Customizable thread types and connection options for easy integration into existing systems
Dynamic balancing ensures smooth rotation, reducing wear on connected components.​
Advanced materials and lubrication systems dissipate friction heat, extending service life.​
Cartridge-style seal assemblies enable 15-minute replacement without system disassembly.​
Compliant with ISO 17288 (rotary union performance) and SAE AS81820 (aerospace fluid components).
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LH & RH UNF, Metric, BSP & NPT
THE WORLD'S LEADING ROTARY UNIONS MANUFACTURERS
