Rotary Union

What is Rotary Union?

Rotary Union is a mechanical device used to transfer fluids such as water, steam, oil, coolant, etc. between rotating and stationary components, while ensuring the continuity and sealing of fluid transfer. It is usually composed of precision machined components, including seals, bearings, housings, etc., which can adapt to different rotational speeds, pressures, and temperature conditions.

According to different application scenarios, Rotary Union can be designed as a single channel or multiple channels to meet various fluid transmission needs. For example, in complex industrial equipment, a Rotary Union may simultaneously transport coolant and lubricating oil.

Characteristics of Rotary Union

Efficient fluid transport

The core function of Rotary Union is to achieve efficient fluid transfer between rotating and stationary components, while avoiding fluid leakage and cross contamination. Its precise design ensures the continuity and stability of fluid transmission, maintaining good performance even under high pressure and high speed conditions.

Diversified application scenarios

Rotary Union can customize designs according to different application scenarios. For example, Rotary Union used in the food processing industry typically uses stainless steel material to meet hygiene requirements; Rotary Union used in the chemical industry requires corrosion resistance.

High precision sealing

Sealing performance is one of the key characteristics of Rotary Union. Reehonde's advanced sealing technology enables Rotary Union to maintain sealing under extreme temperature and pressure conditions. For example, Rotary Union in high-temperature steam applications can withstand temperatures up to 300 ° C.

Customized solutions

Different industrial applications have varying requirements for Rotary Union. Therefore, Reehonde Rotary Union Manufacturer provides customized services to meet specific fluid types, pressures, temperatures, and rotational speed requirements. For example, Rotary Union used in the oil and gas industry requires high pressure and corrosion resistance properties.

Product parameters

Functions of Rotary Union

Fluid transport

The main function of Rotary Union is to transfer fluids from stationary pipelines to rotating equipment. For example, in the paper industry, Rotary Union is used to transfer cooling water to rotating drums to maintain the normal operation of equipment.

Temperature control

In industrial applications, Rotary Union is used to transport coolant or hot oil to achieve temperature control of equipment. For example, in plastic processing equipment, Rotary Union can transfer hot oil to maintain the temperature of the mold.

Lubrication and cooling

Rotary Union is also used to transport lubricating oil to lubricate rotating components and reduce wear. For example, in a machining center, Rotary Union can transfer lubricating oil to rotating tools, extending the tool's lifespan.

Application Area 

In the field of mechanical processing, Rotary Union is used to provide cooling fluid, lubricating oil, etc. for rotating tools or workpieces in machine tools such as lathes, milling machines, and grinders, ensuring the smooth progress of the machining process and improving machining quality and efficiency.

In the field of printing and packaging, Rotary Union provides ink, cleaning solution, and other fluids for rotating plate cylinders, impression cylinders, and other equipment such as printing machines, flexographic printers, and gravure printers to ensure the stability and accuracy of the printing process.

In the field of plastic machinery: Rotary Union is used in plastic processing equipment such as injection molding machines and blow molding machines to provide heating or cooling media for rotating screws, molds, etc., control the temperature during plastic processing, and ensure product quality.

In the field of rubber machinery, Rotary Union provides heating media such as steam and hot water or cooling water for rotating rubber rollers, molds, etc. in equipment such as rubber extruders and vulcanizers, to achieve processes such as rubber molding and vulcanization.

In the field of paper machinery, Rotary Union provides steam for the rotating drying cylinder of paper machines, such as dryers and calenders, to dry the paper, or provides cooling water for the rollers of calenders to ensure the flatness and glossiness of the paper.

In the field of textile machinery, Rotary Union provides lubrication, cooling, or dyeing media for rotating yarn drums, printing and dyeing rollers, etc. in the winding mechanism and printing and dyeing equipment of textile machines, ensuring the smooth progress of the textile production process.

In the field of food and beverage, Rotary Union is used to provide cleaning and disinfectant solutions for rotating filling heads, stirring blades, etc. in filling and mixing equipment, ensuring the hygiene and product quality of the equipment.

In the marine field of ships, Rotary Union is used to provide hydraulic oil, lubricating oil, etc. for rotating mechanical components such as servos, anchors, winches, etc., to ensure the normal operation of ship equipment.

In the aerospace field, Rotary Union is used to provide hydraulic oil, fuel, air and other fluids for rotating components in aircraft engines, landing gear, flight control systems and other equipment, as well as transmit electrical signals to ensure safe flight of the aircraft.

In the field of new energy, Rotary Union is used in the yaw and pitch systems of wind turbines to provide lubrication, hydraulic control, and other functions for rotating components, ensuring the stable operation of wind turbines.

Maintenance and upkeep of Rotary Union

Regular inspection

Regular inspection of Rotary Union's seals and bearings is crucial to ensure their proper functioning. It is recommended to conduct a comprehensive inspection every quarter to identify potential wear or damage.

Cleaning and lubrication

Keeping Rotary Union clean and properly lubricated can significantly extend its lifespan. During each maintenance, the sealing surface should be cleaned and lubricating oil or grease should be reapplied. For example, for Rotary Union applications at high speeds, using high-quality grease can reduce friction and prevent premature wear of seals.

Check the sealing components

Seals are one of the most easily worn components in Rotary Union. Regularly checking the wear of seals and promptly replacing damaged seals can effectively prevent fluid leakage. During inspection, special attention should be paid to whether there are signs of cracks, deformation, or excessive wear on the seals.

Check rotating components

The balance and concentricity of rotating components are crucial for the performance of Rotary Union. If the rotating components are unbalanced or eccentric, it may cause excessive wear or damage to the seals. Therefore, it is necessary to regularly check the concentricity and balance of rotating components.

Check the connection parts

Ensure that the connection between Rotary Union and pipelines or equipment is firm and well sealed. Loose connections may cause fluid leakage and even damage to equipment. During each maintenance, it is necessary to check whether the bolts are tightened and whether there are signs of leakage at the connection points.

Check fluid quality

The quality and cleanliness of the fluid have a direct impact on the performance and lifespan of Rotary Union. For example, fluids containing impurities may wear seals or block channels. Therefore, regular inspection of fluid quality and timely replacement or filtration of fluids are important measures for maintaining Rotary Union.

Rotary Union is an indispensable key equipment in modern industry, widely used in industries such as manufacturing, food processing, chemical, energy, and oil and gas. Its efficient fluid transmission, high-precision sealing, and diverse application scenarios make it an important component of industrial equipment.

Choosing a reliable Rotary Union Manufacturer is key to ensuring equipment quality and performance. When choosing, the manufacturer's experience, technical capabilities, product quality, and after-sales service should be considered. By regular maintenance and proper use, the service life of Rotary Union can be significantly extended and the reliability of the equipment can be improved.

In the future, with the development of intelligence, high-performance materials, and customized solutions, Rotary Union will play an important role in more fields. Through continuous innovation and optimization, Rotary Union will provide more efficient, reliable, and environmentally friendly fluid transport solutions for industrial production.