Japanese Rix Rotary Joint For Machine

RIX Rotary Joint (also known as rotary union or hydraulic swivel) is precision-engineered components designed for reliable fluid and gas transfer in rotating machinery. Ideal for high-pressure hydraulic systems, pneumatic circuits, coolant transfer, and thermal oil/steam applications. These joints enable leak-proof media transmission between stationary and rotating parts under extreme conditions (up to 5,000 PSI and 500 RPM)59. Manufactured with corrosion-resistant stainless steel and durable carbon seals. RIX joints deliver maintenance-free operation and extended service life in industries like manufacturing, construction, and energy.

Key Features

High-Speed Capability

Certain RIX rotary unions, such as the ES50 series for ball screw cooling, support rotational speeds up to 5,000 rpm. It makes them ideal for demanding machine tool applications that require reliable fluid transfer at high speeds.

Advanced Sealing Technology

RIX offers both contact and non-contact (clearance seal) types, including models with no seal lifetime limitation, low heat generation, and minimal dust emission. This ensures long-lasting, maintenance-free operation even in harsh environments.

Versatile Fluid Compatibility

These rotary unions are suitable for a variety of fluids, including coolant oil, water, hot water, heat transfer oil, oil mist, and dry air. It allows them to meet the needs of diverse industrial processes.

Multi-Channel Flow Capability

Available in single, dual, and multi-passage configurations.
Supports simultaneous transfer of multiple media types (e.g., air + oil, or coolant + vacuum).
Prevents cross-contamination with internal separation technology.

Compact, Lightweight Design

Space-saving structure designed for precision equipment.
Reduces spindle load and improves dynamic balance.
Simplified integration into existing equipment.

Robust Construction

Built with corrosion-resistant materials such as stainless steel and copper alloys. RIX rotary unions are engineered for durability and environmental resistance. It reduces the need for frequent replacement.

Easy Installation and Maintenance

Many models feature compact, bearing-less designs and easy installation, such as at the edge of ball screws. It minimizes downtime and simplifying integration into existing systems.

Application

Machine Tools

High-speed rotary unions for coolant, oil mist, and dry air transfer in spindles and ball screws, with both bearing-less and built-in bearing types available.

General Machinery

Rotary unions for water, hot water, and heat transfer oil, featuring heat-tolerant packing and grease, and maintenance-free operation.

Steel, Rubber, and Tire Industries

Specialized models with enhanced environmental resistance and minimal maintenance needs.

Paper Manufacturing

Rotary unions with dry bearings for vapor resistance and oil-free operation.

Benefits of RIX Rotary Joints​

1. Durability​

1.1 High – Quality Materials​

RIX uses high-quality materials in the construction of its rotary joints. For example, in joints used in high-temperature or corrosive environments, stainless steel is often used. The stainless-steel construction of joints like the LCH type not only provides excellent corrosion resistance but also ensures that the joint can withstand the test of time. In applications where the fluid being transferred may contain abrasive particles, the use of hard and wear-resistant materials for the sealing surfaces and other critical components helps to extend the lifespan of the rotary joint.​

1.2 Robust Design​

The design of RIX rotary joints is robust and engineer to withstand the harsh operating conditions of various industries. These design features help to prevent bearing damage due to vibration and coolant leakage, which are common issues in machine tool applications. The unique seal designs in different models also contribute to the durability of the joints by providing a reliable and long – lasting seal.​

2. Performance​

2.1 Efficient Fluid Transfer​

RIX rotary joints design to ensure efficient fluid transfer. The precise engineering of the internal channels and the sealing mechanisms allows for a smooth and uninterrupted flow of fluids. In machine tool applications, the ability to supply coolant and oil mist accurately to the cutting tool or spindle is crucial for maintaining the quality of the machining process. The 2 – fluid and 3 – fluid type joints, with their ability to handle multiple fluids simultaneously, further enhance the efficiency of fluid transfer in complex industrial systems.​

2.2 High – Speed and High – Pressure Compatibility​

Many RIX rotary joints are compatible with high-speed and high pressure applications. For example, some models in the LX88 series (both hexagonal and octagonal connection types) are bore-mount and can handle high-pressure and high-speed operations. This makes them suitable for applications such as high-speed machining centers or in industries where fluids need to be transferred at high pressures, such as in some hydraulic systems. The non-contact seal type joints also perform well at high speeds due to their low – friction design.​

3. Ease of Maintenance​

3.1 Simple Installation​

RIX rotary joint design with ease of installation in mind. For example, the ESX series with its easy-install rotor allows for quick and hassle – free installation. This not only saves time during the initial setup of the machinery but also makes it easier to replace the rotary joint in case of maintenance or repair. The straightforward installation process reduces the need for specialized tools or highly skilled technicians, making it more convenient for industrial users.​

3.2 Low Maintenance Requirements​

Some RIX rotary joints, such as the NB type used in the rubber and tire industry, are maintenance-free. The use of materials like Cu alloy and stainless steel, along with the adoption of a dry bearing, eliminates the need for regular oil supply and reduces the risk of maintenance- related issues. Even in joints that require some maintenance, the design is such that the components are easily accessible, and the maintenance procedures are relatively simple. For example, the built- in bearing type joints in the LX series are designed to easily maintain and exchange, ensuring minimal downtime for the machinery.

Conclusion

The RIX rotary joint offer a comprehensive solution for fluid-transfer needs across a wide range of industries. With their diverse types, high-quality construction, excellent performance, and ease of maintenance, they are a reliable choice for industrial applications. By carefully considering the industry requirements and technical specifications, businesses can select the most suitable RIX rotary joint for their machinery, ensuring efficient, reliable, and long – lasting operation. Whether it’s in machine tools, general machinery, or the rubber and tire industry, RIX rotary joints have proven to be a valuable asset in enhancing the performance of industrial equipment.