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Rotary Unions Joints

274 products


Hydraulic Rotary Unions Grade: Standard

15000.00 - 100000.00 INR (Approx.)

MOQ - 1 Piece/Pieces



Multicolor 20Mm Pvc Jointer

4.2 INR (Approx.)

MOQ - 500 Piece/Pieces



White Pvc Jointer Grade: Standard

4 INR (Approx.)

MOQ - 1000 Piece/Pieces

New Delhi


Steam Rotary Joint Size: 1/2A To 2 1/2A

3200 INR (Approx.)

MOQ - 12 Piece/Pieces



Hydraulic Rotary Union

10000 INR (Approx.)

MOQ - 1 Unit/Units

New Delhi

Rotary Union and Joints

Rotary Union 


Rotary unions are available in a wide variety of configurations, sizes, and shapes, all of which are determined by the purpose that the device will serve. Despite the variety of their constructions, they all consist of a shaft and a dwelling unit.

This is the only thing they share in common. The component known as the shaft is the one responsible for transporting the medium through the rotary union and on to its ultimate location. The housing unit is the component that is responsible for maintaining the integrity of both the rotary union and the media transfer.

Seals, bearings, retaining rings, and O rings are some examples of other prevalent types of components. The degree of complexity of the medium and the nature of the context in which the rotary union will be deployed will determine this.

These particular rotary unions are capable of withstanding a wide range of pressures and rotational speeds. In general, the lower the maximum speed and pressure, the greater the number of passages that it can handle.

The same function that rotary unions perform for fluid media is performed by slip rings for electrical power and signal. Power and data can be sent to and received from spinning machinery through the use of a single integrated device called a rotary union slip ring assembly.

This kind of comprehensive media transmission system is becoming more widespread in a variety of different types of businesses. They are the only company in the industry to provide this product with assembly from a single supplier. Rotary Systems is the company that establishes the benchmark for how well this complicated gadget functions.

The size and level of intricacy of rotary union and joints can vary greatly. As a result of this, they can be constructed with more than one route, enabling a single device to facilitate the transfer of numerous forms of media.

Rotary Joint


To facilitate the transmission of media such as hydraulic oil, water, air, thermal oil, steam, coolant, and so on between rotating equipment and stationary pipework, rotary joints are used. It is also known as a rotary union or rotating union.

Other names for this device include rotary union and rotating union. Rotary unions have the capability of being constructed with many passages and can simultaneously manage a variety of media kinds. In situations like this, a flexible seal, like an O-ring, is employed to stop fluids from "crossing over" into another passageway.

This keeps the fluids from leaking. The oil and gas industry, the food and beverage industry, aerospace, robotics, and medical device manufacturing are just some of the many industries and applications that make use of soft seal multi-passage rotary unions.

Slip rings, which may convey electrical signals in addition to hydraulic power, are often attached to the rotary union so that they can be used in certain applications.

Standard rotary joints often employ a spring-loaded seal to prevent leakage of the fluid or gas medium into the surrounding environment.

When the service is at low pressure or a vacuum, the spring force is used to create the seal. Conventional rotary joints can either be self-supported by employing an internal carbon guide or externally supported by making use of rods or a mounting bracket. Self-supporting rotary joints are the more common type.

Different Types of Rotary Unions and Joints

Here are some of the different kinds of rotary unions and joints.

1. Dual flow rotary union

Dual currents when the supply lines and return lines are linked to the same side of the cylinder and the stationery is located inside the syphon pipe, rotating unions are utilised.

Miniature seals There is a selection of dual flow rotary unions available for high-pressure and high-speed configurations for a wide variety of media, including water, air/hydraulic, steam, coolant, and so on.

2. Water rotary union

A water rotary union is a device that is used to transport fluid under the pressure of water or vacuum from a stationary intake to a rotating outlet in such a way that the fluid connection is maintained while still being isolated.

3. Single-flow rotary union

When the supply lines and return lines are linked to opposing sides of the cylinder, mono-flow rotating unions are the type of union that is utilised.

Those tiny seals are called micro seals. Air or hydraulic, coolant, steam, Water, and so on can all be piped through single-flow rotary unions in high-pressure, high-speed configurations.

4. Air/vacuum rotary union

Rotary unions for gas and vacuum for air, as well as rotary unions for air vacuum a very accurate mechanical devices that can move liquids, solids, and gases away from a stationary source such as a pipe or tubing.

The fact that it rotates across the whole 360 degrees enables a new component to flow into and out of the revolving section. They can be found in a wide variety of configurations, sizes, and shapes, but they all share the same four fundamental components: the housing, the shaft, the bearing, and the mechanical seal.

Rotary unions for air and vacuum are frequently found in automobiles, mining equipment, printing equipment, and other types of heavy machinery used in oil and gas extraction, mining, and other industries.

5. Rotating joint

To facilitate the flow of water, hydraulic oil, steam, thermal oil, coolant, and air, and between rotating equipment and fixed pipework, a rotary junction, also called a rotating union or rotary union, is used.

6. Miniature rotary union

The little rotary union in miniature The Micro Rotary Union is a mechanical device that rotates and allows air to be transferred to and from rotating devices.

It can function at rates of up to 7000 RPM with a maximum air pressure of 75 psi, and it is utilised in machinery that calls for a continuous supply of air to be supplied while it is rotating.

7. Rotary manifold

Transmission of hydraulic fluid, water, coolants, air, and a variety of other fluids are some of the tasks that hydraulic rotary manifolds are intended to perform.

Every manifold has the capability of having an electrical swivel joint attached to it. You have the option of purchasing them with up to 16 ports, continuous spinning, and a maximum pressure of 6,100.

8. Rotary Absorber

Rotary Absorber are mechanical components that allow the use of the object on which they are put more regulated and comfortably by reducing the speed of movement through continuous rotation. They do this by slowing the movement down.

Where is Rotary Union and Rotary Joint Used?

1. Steel

One of the most common applications for rotary unions is in the steel industry, specifically in continuous casting machines (CCM), where they are used to cool the many rolls that guide molten slabs as they fall through a series of segments and onto a run-out table before being annealed and heat treated.

Rotary unions are one of the most common types of cooling devices used in the steel industry. After that, either a coil or a sheet is made from the slab.

2. Plastics

Rigid sheet extrusion, flexible blown film, foam, and Cast film, single and thermoforming, blow moulding, pelletizing, multi-layer co-extrusion, wire and cable injection moulding, and winding are just few of the many applications that are utilised in the production of plastic products.

Throughout the extensive range of possible applications, rotary unions are utilised for either heating or cooling the several processing rollers.

Electrical slip rings will be used in a significant portion of the modern winding applications that are already available.

3. Oil and gas

Oil and gas drilling rigs use air clutches and brakes, which require rotary unions to function properly. In order to effectively remove mud from the drill tip, water unions are utilised.

Because of the harsh nature of this application, water unions are required to be stress and vibration resistant. Batch mixers, flaking mills, blenders, and drying rollers are some of the machines used in petrochemical and oil refineries.

Each of these machines requires rotating unions. The extraction of oil and gas from subsea areas necessitates the utilisation of specialised machinery.

When lowering flow lines in hostile waters to depths surpassing 3,500 metres, these flow lines are built specifically for use with deep water oil production systems, and they offer equipment operations an additional degree of flexibility.

4. Machine tools

Coolant, cutting oil, MQL, and pressured air can be transmitted via rotary unions in either a bearing glass or bearing-supported design, depending on the user's preference.

In addition to the distribution of coolant, rotary unions are utilised for chucking, tool sensing, rotating index tables, and a variety of other applications within the realm of machine tools.

5. Agriculture

During the harvesting of grain, rotating unions are utilised in a number of pieces of machinery, including combines, threshers, tractors, and grain carts. After harvesting, many different crops will be processed using machinery that has rotating unions as an integral part.

Steam cookers, flaking mills, cooling conveyors, shredders, rotary cutters, , starch dryers, and roll-forming machines are all examples of food processing machinery that make use of rotary unions.

6. Car washes

There are two types of vehicle wash facilities that use unions’ automatic and hand-operated. Both of these types of facilities use unions.

The majority of automatic system manufacturers feature many revolving brushes that use 55 series to supply low-pressure detergent water through the supporting shaft to the brushes. These brushes are used to clean the automatic system.

In addition, automatic car washes contain spinners that call for rotational unions in order to send high-pressure water into the mechanics that cause the spinners to rotate.

7. Machine tools

Coolant, cutting oil, or pressurised air can be transmitted through rotary unions in either a bearing-less or bearing-supported form, depending on the user's preference.

In addition to the distribution of coolant, rotary unions are utilised for chucking, tool sensing, rotating index tables, and a variety of other applications within the realm of machine tools.

8. Converting

Converting refers to the process of transforming raw materials such as paper, plastic film, and foil into finished, printed packaging such as pouches, folding cartons, labels, bags, tags, and corrugated shipping cases.

This processing occurs farther downstream in the supply chain. Rotary unions find applications across the board, whether the fluid being converted is water, steam, thermal oil, air, or hydraulics.

FAQ: Rotary Union and Joints

Q. Top manufacturers and suppliers of rotary unions and joints?
Ans. Top Manufacturers and Suppliers of Rotary Unions and Joints are MACO Corporation, Indo Technolinks, showagiken industrials etc.

Q. How to Select a rotary union?
Ans. It's important to choose the right rotary union for your application to make sure it's reliable, lasts a long time, is safe, and makes your process run smoothly.

Q. What is the purpose of a rotary joint?
Ans. Rotary joints can be used to connect moving parts to fixed pipes so that steam, water, thermal oil, coolant, hydraulic oil, air, and other fluids can be moved.

Q. Where can buyers purchase rotary unions & joints?
Ans. There are several individual companies as well as some reliable B2B marketplaces that list manufacturers, suppliers and exporters of Rotary Unions & Joints where buyers can check the available products and send their orders. 

Q. How can I find a supplier of rotary unions & joints near me?
Ans. You can simply type ‘suppliers of Rotary Unions & Joints near me’ on search engine like Google or Bing and you will get list of suppliers near your locality.

Q. What is the price of rotary unions & joints in India?
Ans. There is no uniformity in the price of Rotary Unions & Joints since these are made in different materials and specifications. Buyers should check the price of each type of rotary joints and unions offered by different suppliers.

Q. How a rotary union is different from pipe unions?
Ans. Rotary union essentially is used in systems subject to rotational motion while pipe union is used in a static joint without the involvement of any rotational motion.

Q. How a rotary union function?
Ans. A rotary union works by establishing a connection between a static input to a component in continuous rotational motion permitting a connection in rotational motion and allowing the flow of liquids or gases.