A Flanged Rotary Union is a specialized type of rotary joint designed with flange connections to ensure secure installation and stable fluid transfer in rotating equipment. Compared with threaded rotary unions, flange-mounted rotary unions provide stronger mechanical stability and improved sealing reliability in high-pressure and heavy-duty industrial systems.
Our Flanged Rotary Union series is engineered to support continuous rotation while transferring various media such as water, coolant, hydraulic oil, steam, air, and other industrial fluids. These rotary unions are widely used in machinery where threaded connections are not suitable or where stronger mounting structures are required.
As a professional rotary union manufacturer and exporter in China, we provide a complete range of industrial flanged rotary joints designed for reliability, durability, and cost efficiency. Our products are also widely used as aftermarket replacement solutions for leading global brands, including Deublin rotary unions and other international manufacturers.
This category page includes multiple flange-type rotary union models, designed for applications such as CNC machine tools, hydraulic systems, rotating drums, steel processing equipment, construction machinery, and automated production systems.
Selecting the correct Flanged Rotary Union is essential for ensuring reliable fluid transmission and long service life in industrial equipment. Because different applications involve different pressures, temperatures, and media types, engineers must evaluate several technical factors before choosing a suitable flange-mounted rotary joint.
Below are the most important parameters to consider when selecting an industrial flanged rotary union.
Pressure is one of the most critical parameters for a high-pressure rotary union. Hydraulic systems and heavy industrial equipment often operate under significant pressure levels.
Typical ranges include:
Low pressure: 0–10 bar
Medium pressure: 10–50 bar
High pressure: 50 bar and above
Choosing a rotary union with the appropriate pressure rating ensures reliable sealing and prevents premature seal wear.
Different rotating equipment operates at different speeds. The rotational speed (RPM) of the machine determines the sealing technology required for the rotary joint.
Typical ranges include:
Low speed equipment (0–200 RPM)
Medium speed systems (200–2000 RPM)
High-speed rotating equipment (2000+ RPM)
Selecting the correct high-speed rotary union ensures stable performance and prevents overheating or excessive friction.
The type of fluid passing through the flanged rotary union also affects material selection and sealing design.
Common media include:
water
coolant
hydraulic oil
compressed air
steam
For example, coolant rotary unions used in machine tools require corrosion-resistant materials, while hydraulic rotary unions require seals capable of handling high pressure oil.
Temperature is another important factor affecting the durability of seals and internal components.
Typical operating temperature ranges include:
standard industrial temperature: -20°C to 120°C
high temperature environments: up to 250°C or higher
Choosing the right industrial rotary union ensures long-term stability in high-temperature systems.
Because flanged rotary unions connect directly to industrial equipment, the flange standard must match the machine design.
Common flange types include:
ANSI flange
DIN flange
JIS flange
custom industrial flange designs
Our engineering team can also provide custom flange rotary union designs based on customer drawings or equipment specifications.
As an experienced rotary union manufacturer, we focus on producing high-performance rotary joints for industrial applications.
All key components are manufactured using advanced CNC machining technology, ensuring precise tolerances and consistent quality.
Our rotary unions use high-performance sealing materials such as:
carbon graphite
silicon carbide
PTFE composite seals
These materials ensure reliable sealing even in demanding operating conditions.
Each flanged rotary union undergoes strict testing procedures, including:
pressure testing
rotation testing
leakage inspection
This ensures that every product meets international industrial quality standards.
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THE WORLD'S LEADING ROTARY UNIONS MANUFACTURERS
