Rotary unions

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Rotary unions | Choosing the right rotary union
There are many sizes of rotary unions available. Outlined below you will find the essential characteristics for calculating the size of your product. The nominal diameter (DN) of your installation: this is the inside diameter of a connecting pipe. The operating pressure of your installation: the rotary union is used in both vacuum and pressure systems. You will need to know the usual pressure of the media, generally between 0 and 1,380 bar (0 to 20,000...
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water rotary union
water rotary union
RX

Rotational speed: 300 rpm
Pressure: 35 bar
Nominal size: 0.375 in - 6 in

... in even the toughest ground formations. Kadant Johnson has over 80 years of experience in engineering and manufacturing rotary sealing devices for some of the most demanding environments. What you can expect from ...

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Kadant Johnson Europe B.V.
steam rotary joint
steam rotary joint
ELS™

Rotational speed: 0 rpm - 200 rpm
Pressure: 0 bar - 20 bar
Nominal size: 2 in - 12 in

ELS ROTARY JOINTS The ELS (Extended Life Series) rotary joint is a self-supported joint that has been specifically designed to solve accelerated wear problems that occur ...

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Kadant Johnson Europe B.V.
water rotary joint
water rotary joint
SX®

Rotational speed: 0 rpm - 550 rpm
Pressure: 0 bar - 20 bar
Nominal size: 0.75 in - 3 in

SX ROTARY JOINT The self-supported SX rotary joint provides a positive seal between stationary piping and a rotating cylinder and is applied to steam, ...

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Kadant Johnson Europe B.V.
oil rotary union
oil rotary union
RS 9040

Rotational speed: 1,000, 1,200 rpm
Pressure: 150 bar
Nominal size: 0.25 in - 18 in

Eaton Airflex Dual Passage Rotorseals is a combination of five different designs for use in several applications. The unit is capable of transferring media through two separate passages on the same shaft end. It is equipped with American ...

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Airflex
air rotary joint
air rotary joint
W05111 series

Pressure: 0 bar - 12 bar

EAN code: - 8024986001525 Quantity per package: - 0 Minimum order quantity: - 0 Unit of measure: - items

oil rotary union
oil rotary union
SPS-5210

Rotational speed: 0 rpm - 500 rpm
Pressure: 0 bar - 40 bar
Nominal size: 0.25 in

... (under pressure or vacuum) from a stationary source to a rotating component. Need to combine fluid with electrical power, signal and/or data transfer? No problem. The SPS Series rotary unions ...

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DSTI - Dynamic Sealing Technologies, Inc.
vacuum rotary union
vacuum rotary union
LT 2

Rotational speed: 0 rpm - 500 rpm
Pressure: 0 bar - 40 bar
Nominal size: 0.125, 0.375 in

The 2-passage LT Series rotary unions are designed for air, gas and vacuum use and are ideal for a number of automation and robotic applications. These lightweight, compact rotary unions ...

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DSTI - Dynamic Sealing Technologies, Inc.
water rotary union
water rotary union
GP 2

Rotational speed: 0 rpm - 500 rpm
Pressure: 0 bar - 515 bar
Nominal size: 0.125 in - 1 in

... mounting the union to an interface. GP 2-passage models with BSPP thread connections are not available with O-ring face seal glands. Need to combine fluid with electrical power, signal and/or data transfer? No problem. ...

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DSTI - Dynamic Sealing Technologies, Inc.
oil rotary union
oil rotary union
F9.280-1

Rotational speed: 10 rpm
Pressure: 10 bar - 500 bar
Nominal size: 0.25 in

F9.280-1 Rotary couplings, single passage connections: G1/4 und pipeØ 8 mm

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Römheld GmbH Friedrichshütte
oil rotary union
oil rotary union
F9.280-2

Pressure: 10 bar - 500 bar
Nominal size: 0.25 in

F9.280-2 Rotary couplings, twin passage Pipe thread with/without leakage oil recirculation ND 5

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Römheld GmbH Friedrichshütte
oil rotary union
oil rotary union
F9.280-4

Pressure: 10 bar - 50 bar

F9.280-4 Rotary couplings, four passage Pipe thread with/without leakage oil recirculation ND 5

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Römheld GmbH Friedrichshütte
water rotary union
water rotary union
1200 SR2

Rotational speed: 0 rpm - 1,500 rpm
Pressure: 0 bar - 100 bar
Nominal size: 0.25 in - 5 in

High pressure hose connection with jacks. Hydraulic control. Technical Data: Surface treatment: Chemical Nickel Implantation: Angle elbow Temperature working: -20°C à 200°C Connection: Thread BSP *for any other type of connection, ...

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Duff-Norton Europe
water rotary union
water rotary union
MCR2 series

Rotational speed: 0 rpm - 1,500 rpm
Pressure: 0 bar - 100 bar
Nominal size: 0.125 in - 1.25 in

These multi-circuit rotary connections allow the transfer of several fluids at different pressures on your installation. Surface treatment: Ceramic, Anodizing, Kolsterisation Implantation: Angle elbow Temperature ...

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Duff-Norton Europe
water rotary union
water rotary union
DWPA series

Rotational speed: 0 rpm - 5,000 rpm
Pressure: 0 bar - 10 bar
Nominal size: 0.5 in - 2 in

... plug installed in the end of the standard Rotary Union may be replaced with special elbows available from Duff Norton Europe to install either stationary or rotating siphon pipes for ...

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Duff-Norton Europe
water rotary union
water rotary union
EU series

Body Material: SS316L Connection Size: ½"NPT(F) x ½"NPT(F) ¾"NPT(F) x ¾"NPT(F)

air rotary union
air rotary union
RU-2-20

Rotational speed: 0 rpm - 4,000 rpm
Pressure: 0 bar - 40 bar

... double piston cylinder ZHVD-DFR for D-chucks. Rotary union for media supply for rotating cylinders. Universal for air + oil/air + coolant. Can also rotate dry (without medium applied). Product ...

air rotary distributor
air rotary distributor
IRJ05 series

Rotational speed: 160 rpm
Pressure: 250 bar

... With additional slide bearings The rotary joints are made of high strength aluminum and the rotary piston is made of hardened stainless steel. They are used where media must be passed ...

water rotary joint
water rotary joint
DXS series

Universal rotary joint for water, equipped with mechanical seal and ball bearings. DXS with highly resistant, ceramicscoated sealing surface for higher temperatures and speeds as well as prolonged service ...

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MAIER
water rotary joint
water rotary joint
DP series

Rotational speed: 55,000 rpm
Pressure: 10 bar

Universal rotary joint for water and thermal oil with balanced mechanical seal and ball bearings. Various seal combinations can be selected, depending on the application. Meets the special requirements ...

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MAIER
water rotary joint
water rotary joint
DX series

Rotational speed: 40 rpm
Pressure: 8, 12 bar

Universal rotary joint for water, equipped with mechanical seal and ball bearings. DXS with highly resistant, ceramicscoated sealing surface for higher temperatures and speeds as well as prolonged service ...

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MAIER
air rotary union
air rotary union
2620

Rotational speed: 6,000 rpm
Pressure: 70 bar
Nominal size: 107.95 mm

Two independent channels for applications such as clamping and loosening The balanced mechanical seal of each channel can improve the service life and reduce the torque, even under the maximum pressure Closed seal provides continuous ...

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Dewel Machinery Technology Co.,Ltd
refrigerant fluid rotary union
refrigerant fluid rotary union
1129

Rotational speed: 30,000 rpm
Pressure: 100 bar
Nominal size: 17.99 mm

Single channel for coolant and compressed air Automatic induction technology can automatically switch between closed sealing and leakage control according to the type of medium Full-flow design, barrier-free passage, avoiding impurity ...

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Dewel Machinery Technology Co.,Ltd
refrigerant fluid rotary union
refrigerant fluid rotary union
A10

Rotational speed: 15,000 rpm
Pressure: 70 bar

... barrier-free passage, avoiding impurity residue The threaded rotor supported by the bearing is easy to install Double angular contact ball bearing Labyrinth structure and multiple large leakage ports to protect ...

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Dewel Machinery Technology Co.,Ltd
multi-passage rotary joint
multi-passage rotary joint
Multi-Circuit Rotary Block

Pressure: 0 MPa - 1 MPa
Nominal size: 5, 6 mm

Best suitable for piping of index tables or other rotary equipment. A single block can serve 4 circuits, 6 circuits or 8 circuits. Make an inquiry for circuits (special made) other than above standard types to the ...

refrigerant fluid rotary union
refrigerant fluid rotary union
1117-002-111

Rotational speed: 0 rpm - 30,000 rpm
Pressure: 2,030 psi
Nominal size: 0.375 in

Single passage for coolant or MQL Closed seals for transfer line and similar applications Full-flow design has no obstructions to trap swarf or debris Balanced mechanical seals made from silicon carbide for long life even ...

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DEUBLIN COMPANY
oil rotary union
oil rotary union

Rotational speed: 250 rpm
Pressure: 0 psi - 3,000 psi

Features Rotating unions allow hydraulic or air power sources to be continuously connected in rotating applications allowing the use of constant pressure hydraulic workholding on lathes, ...

air rotary union
air rotary union
AJT1 series

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AUTOMAX
oil rotary union
oil rotary union
AJTH11 series

Pressure: 1 bar - 10 bar
Nominal size: 0.125, 0.375, 0.5 in

Range of high speed rotating joints, 1 way, standard, vacuum versions, rotation speed until 1000 rpm.

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AUTOMAX
air rotary union
air rotary union
AJT3 series

Pressure: 1 bar - 12 bar
Nominal size: 0.25 in

Range of rotating joints, 3 ways and 3 or 6 outlets, high temperature, water/steam vacuum versions, rotation speed from 140 to 200 rpm.

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AUTOMAX
compressed air rotary union
compressed air rotary union

Rotational speed: 90 rpm - 550 rpm
Pressure: 0 bar - 12 bar

Rotative fitting series Areas of application: compressed lubricated air - BSP parallel thread - working temperature : -10 ÷ 85°C Viton version : -20 ÷ 150°C (on resquest) Materials and components -aluminium -steel -nickel ...

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SENGA
air rotary union
air rotary union
MRU

Rotational speed: 0 rpm - 7,000 rpm
Pressure: 75 psi

The Montalvo Micro Rotary Union is a mechanical rotating device that allows the transfer of air to and from rotating equipment. It is used in machinery that requires ...

vacuum rotary union
vacuum rotary union
RU001

Rotational speed: 0 rpm - 250 rpm
Pressure: 0 psi - 7,000 psi
Nominal size: 1.4, 2.7, 3.2, 1.2, 1.9 in

Rotary Systems' entry level 001-Series swivel union is designed for the hose reel industry, where pressures may be high but rotational speeds and side loads are at a minimum. This economical ...

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Rotary Systems, Inc.
refrigerant fluid rotary union
refrigerant fluid rotary union
ROTOKOMBI

Rotational speed: 1 rpm - 24,000 rpm
Pressure: 1 bar - 140 bar

... ROTOKOMBI M45 L8 + ESR160/12-QC Rotary Union ROTOPACK + Slip Ring ROTOFLUX Speed [rpm]120, cycling HighlightsExtremely compact rotary transmission system for air ...

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Moog GAT GmbH
gas rotary union
gas rotary union

Pressure: 1,000 psi - 20,000 psi

... of distinguish, the unions with different pressure grades have different color identifications and have obvious specification connection modes and pressure grade marks on the wing nuts. The specification and model of ...

water rotary union
water rotary union
086/088

... of air, pressurised oil and cooling oil into rotating shafts are standard products and are not only for use in conjunction with clutches. In addition to this Ortlinghaus also develops and manufacturers rotary ...

vacuum rotary joint
vacuum rotary joint
MK11A series

Rotational speed: 100, 300 rpm
Pressure: 1 MPa

... channel pneumatic rotary joint, 1 inlet and 1 outlet, it can transmit compressed air, vacuum, G1/8". compact structure, light weight, corrosion resistant, stainless steel shaft and aluminum shell. All MK single channel ...

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MOFLON
vacuum rotary union
vacuum rotary union
VRU series

The VRU Series Vacuum Rotary Union, with its robust and lightweight design, provides a direct connection between the robot and the gripper, while also allowing an external vacuum supply to the gripper. Its ...

water rotary union
water rotary union
3001015L Series

Rotational speed: 1,000 rpm
Pressure: 0 Pa - 10,000,000 Pa
Nominal size: 0.5 in

SENRING 3001015L is singel passage rotary union that transfers Compressed air, steam, vacuum and kinds of gas media. Features 1 In - 1 Out passage; Input G1/2″, Output G1/2″ The media could be: Compressed ...

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SenRing Electronics.
oil rotary union
oil rotary union
1K

Rotational speed: 0 rad.min-1 - 10,000 rad.min-1
Pressure: 160 bar

The single-passage oil rotary union is screwed directly onto the spindle shaft and is a cheaper alternative to the hydraulic release of clamping systems.

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OTT-JAKOB Spanntechnik GmbH
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How to choose this product
rotary-union

Rotary unions are autonomous, self-supporting couplings that allow leak-less fluid transfer (steam, water, air, oil) to a rotating machine's extremities. They can have several channels and ports, enabling them to convey several fluids simultaneously.

Applications

Hydraulic applications for rotary unions are numerous: offshore operations, aeronautics, construction, automobile and other industries.

Technologies

The two collars of the device, one of stainless steel, the other of graphite, are in contact with one another. Each has a polished surface.

How to choose

Several parameters must be considered when choosing a rotary union:
- Rotation velocity
- Number of circuits and their diameters
- Fluid nature, temperature and pressure

Advantages

- Fluid passage
- Watertightness
- No maintenance