High-Performance Multi Port Rotary Union for Industrial Systems

Description

Our Multi Port Rotary Union is a precision-engineered rotary joint designed to transfer multiple media—such as air, water, oil, coolant, or hydraulic fluid—simultaneously through one rotating interface. With up to 2–12 independent flow channels, this multi-channel rotary union enables compact integration, efficient piping, and minimal space usage in complex rotating systems.

Engineered for high pressure, high speed, and harsh industrial environments, the multi-port rotary union is an essential part of modern manufacturing, machining, and processing equipment. Whether you’re operating a CNC machining center, robotic automation cell, or rotary indexer, this solution ensures reliable, leak-free, and high-speed transmission of multiple fluids or gases between stationary and rotating parts.

Key Features

Multiple Flow Paths in a Single Compact Unit

Multi-port rotary unions are engineered to accommodate two or more independent channels within a single rotating assembly. This allows simultaneous transmission of different media—such as coolant, hydraulic oil, air, or vacuum—through a centralized point, significantly reducing piping complexity and installation footprint.

Continuous 360-Degree Rotation Under Pressure

The union enables unrestricted 360° rotation while maintaining uninterrupted flow in all channels. This is critical for dynamic applications such as robotic arms, rotating tables, or automated production systems where fluids must be transferred without tangling or interruption.

Space-Saving, Integrated Design

By combining multiple rotary unions into a single compact housing, multi-port units drastically reduce system weight and space requirements. This integrated structure also simplifies installation and minimizes the number of required fittings, lowering the risk of leaks.

Customizable Configurations for Versatile Applications

These rotary unions are available in 2-port, 4-port, 6-port, and even 8-port designs, with custom port arrangements available upon request. Users can choose from various thread standards (NPT, BSP, G-thread, metric), port sizes, and sealing options tailored to specific machinery or OEM system requirements.

High Pressure & High Speed Capabilities

Advanced bearing and sealing systems allow the union to operate at high rotational speeds (often exceeding 1000 RPM) and withstand internal pressures up to 5000 PSI, depending on design. This makes them suitable for demanding applications like CNC machining, metal forming, or automated manufacturing.

Corrosion-Resistant & Durable Materials

We make housings and internal components from industrial-grade materials such as stainless steel, hard-anodized aluminum, or nickel-plated brass.These materials provide excellent resistance to rust, wear, and chemical attack, extending the service life of the union even in harsh environments.

Multi-Media Compatibility for Complex Systems

Multi-port rotary unions can simultaneously transfer diverse media types, including water, steam, hydraulic oil, compressed air, and vacuum. This makes them ideal for systems that require coordinated multi-function operations—such as clamping, cooling, and actuation—all from a single rotating point.

Application

1. Machine Tools and CNC Equipment

Multi-port rotary unions are extensively used in CNC machine tools, especially in spindles and rotary tables, where multiple media such as coolant, hydraulic oil, and compressed air need to be transferred simultaneously to rotating components. This ensures efficient cooling, lubrication, and operation of high-speed machining processes, improving tool life and machining precision.

2. Steel and Metal Processing Industry

In steel manufacturing, multi-port rotary unions are critical in continuous casting machines and steel coil winding equipment. They facilitate the transfer of cooling water, hydraulic fluids, and other process media to rotating parts like rollers and reels. This multi-channel capability enhances process control and equipment reliability in harsh environments.

3. Printing and Packaging Machinery

Printing presses and packaging machines often require multiple fluid supplies, such as inks, solvents, cooling fluids, and compressed air, delivered simultaneously to rotating cylinders or drums. These unions enable these complex fluid transfers without cross-contamination, ensuring consistent print quality and machine uptime.

4. Aerospace, Defense, and Energy Sectors

Multi-port rotary unions are used in aerospace and defense equipment, including radar systems, wind turbines, and satellite communication devices. They provide reliable transfer of hydraulic fluids, cooling media, and electrical signals (when combined with slip rings) to rotating assemblies. In wind power generation, they help transfer hydraulic and cooling fluids to yaw and pitch systems.

5. Medical and Scientific Equipment

In medical imaging devices such as CT scanners, the joints allow simultaneous transmission of cooling water, power, and data signals to rotating gantries. This enables continuous operation with high precision and safety.

6. Oil & Gas and Subsea Applications

In oil drilling and subsea exploration equipment, they transfer hydraulic fluids, cooling water, and other media to rotating drill heads and underwater robotic arms. Their robust sealing and multi-channel design ensure reliable operation under high pressure and corrosive environments.

7. Chemical and Process Industries

Multi-port rotary unions are used in chemical reactors, mixers, and rotary kilns where multiple fluids such as steam, cooling water, and process gases must be supplied simultaneously. The independent sealing of each channel prevents contamination and allows precise control of process parameters.

8. Robotics and Automated Manufacturing

Robotic arms and automated assembly lines often require multiple fluid and pneumatic lines routed through rotating joints. Multi-port rotary unions enable the transfer of lubricants, cooling fluids, and compressed air to rotating joints, enhancing flexibility and reducing maintenance

FAQ

Q1: How many channels can I have in one rotary union?

A: We offer 2–12 passages per unit. Custom channel numbers and sizes are available.

Q2: Can different media be used in different channels?

A: Yes. Operators seal each channel independently to prevent cross-contamination.

Q3: What if I need high pressure in some channels and low pressure in others?

A: Our design supports mixed pressure levels—just let us know the specific pressure and media for each passage.

Q4: Do you offer custom port arrangements or sizes?

A: Absolutely. We support axial or radial port configuration and BSP/NPT/Special thread types.

Q5: Can it handle vacuum and air together?

A: Yes. Many customers use one port for vacuum and others for compressed air without issue.

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