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
SPS-5210

Pressure: 0 bar - 40 bar
Rotational speed: 0 rpm - 500 rpm
Nominal size: 38.1 mm - 60.45 mm

... (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.
air rotary union
air rotary union
LT 2

Pressure: 0 bar - 40 bar
Rotational speed: 0 rpm - 500 rpm

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

Pressure: 0 bar - 515 bar
Rotational speed: 0 rpm - 500 rpm

... 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
RS 9040 series

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
water rotary union
water rotary union
1200 SR2 series

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

High pressure hose connection with jacks. Hydraulic control. Activities: – Food – Chemistry, Plastic, Health – Energy, Environment – Metallurgy, Mechanics and Subcontracting – Trading – Mineral products – Transport and Logistics Technical ...

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

Pressure: 0 bar - 100 bar
Rotational speed: 0 rpm - 1,500 rpm
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. Activities: – Food – Chemistry, Plastic, Health – Construction, Building, Wood, Habitat – Electrical ...

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

Pressure: 0 bar - 10 bar
Rotational speed: 0 rpm - 5,000 rpm
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

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

... 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 ...

refrigerant fluid rotary union
refrigerant fluid rotary union
UNION 5/8-18 UNF RH .655 PLT

Pressure: 2,031 psi
Rotational speed: 0 rpm - 30,000 rpm
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 ...

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DEUBLIN COMPANY
air rotary union
air rotary union
UNION 1-14 UNS RH

Pressure: 1,000, 150 psi
Rotational speed: 0 rpm - 3,500 rpm
Nominal size: 0.5 in

Monoflow design Self-supported rotating union Radial housing connection Balanced mechanical seals Seal combinations: Carbon Graphite/Hardened Tool Steel or Carbon Graphite/Silicon Carbide ...

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DEUBLIN COMPANY
air rotary union
air rotary union
UNION 1/2 NPT RH

Pressure: 1,000, 150 psi
Rotational speed: 0 rpm - 1,500 rpm
Nominal size: 0.5 in

Monoflow design Self-supported rotating union Radial housing connection Balanced mechanical seals Seal combinations: Carbon Graphite/Hardened Tool Steel or Carbon Graphite/Silicon ...

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DEUBLIN COMPANY
vacuum rotary joint
vacuum rotary joint
MK11A series

Pressure: 1 MPa
Rotational speed: 100, 300 rpm

... 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 joint
vacuum rotary joint
MK12A series

Pressure: 1 MPa
Rotational speed: 100, 300 rpm

... channel pneumatic rotary joint, 1 inlet and 1 outlet, it can transmit compressed air, vacuum, G1/4". compact structure, light weight, corrosion resistant, stainless steel shaft and aluminum shell. All MK single channel ...

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MOFLON
vacuum rotary joint
vacuum rotary joint
MK13A series

Pressure: 1 MPa
Rotational speed: 100, 300 rpm

... channel pneumatic rotary joint, 1 inlet and 1 outlet, it can transmit compressed air, vacuum, G3/8". compact structure, light weight, corrosion resistant, stainless steel shaft and aluminum shell. All MK single channel ...

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MOFLON
multi-passage rotary joint
multi-passage rotary joint

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 ...

water rotary union
water rotary union
14643M

Pressure: 0 bar - 17 bar
Rotational speed: 0 rpm - 1,500 rpm
Nominal size: 0.25 in - 1.25 in

Rotary Unions are self-contained and self-supporting rotary seals used to transfer different media such as steam, water, air or oil from a stationary source to and from rotating ...

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FILTON
compressed air rotary union
compressed air rotary union

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

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
high-speed rotary union
high-speed rotary union
GRHL series

Pressure: 0 bar - 10 bar
Rotational speed: 900, 1,200 rpm

High speed rotative fitting series Areas of application: compressed lubricated air, vacuum - BSP conical thread with teflon - working pressure : 0 ÷ 0 bar vacuum version : -750 mm Hg - working temperature : 0 ÷ 60°C Materials ...

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SENGA
quick-connect rotary union
quick-connect rotary union
2770

Pressure: 0 bar - 9 bar
Rotational speed: 250 rpm - 500 rpm
Nominal size: 4 mm - 12 mm

Push-in rotary fittings - 2770 series Technical features: Applications: compressed air, vacuum - working pressure : 0 ÷ 9 BAR - vacuum: - 750mm Hg - working temperature : 0°C / + 60°C - suitable hoses : PU, PA Materials ...

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SENGA
air rotary distributor
air rotary distributor
IRJ05 series

Pressure: 250 bar
Rotational speed: 160 rpm

... 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 ...

oil rotary union
oil rotary union
IRJ02-001

Pressure: 300 bar
Rotational speed: 1,500 rpm
Nominal size: 2 mm

... Simple Mounting Contour - High rotation speed - Easy mounting - Working pressure up to 300 bar - Ball bearing These rotary units are particularly suitable for high speeds at high pressures. Rotor and stator are ...

steam rotary joint
steam rotary joint
ELS

Pressure: 0 bar - 20 bar
Rotational speed: 0 rpm - 200 rpm
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.
thermal oil rotary joint
thermal oil rotary joint
SX®

Pressure: 0 bar - 20 bar
Rotational speed: 0 rpm - 550 rpm
Nominal size: 0.8 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.
thermal oil rotary joint
thermal oil rotary joint
ELSX™

Pressure: 150, 300 psi
Rotational speed: 0 rpm - 300 rpm
Nominal size: 2.5, 3, 2, 3.5 in

ELSX ROTARY JOINT The ELSX rotary joint is the next generation of extended life, self-supported (ELS) rotary joints for use in steam ...

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Kadant Johnson Europe B.V.
all-fluid rotary joint
all-fluid rotary joint
DynaVariacor®

... by a supply pipe: washing gun, pneumatic cutting tools, fluid transfer equipment, vacuum gripping, special machines with rotational and / or translational movements… The optimum flow rate is guaranteed by a passage diameter ...

all-fluid rotary union
all-fluid rotary union

FLUID TRANSFER BALL JOINT FOR ROBOTS Through the DynaVariacor® range, the MID company offers patented ball joints, freely orientable through 360 °, all fluids, suitable for the many uses in the robotics field. Can be used, for example, ...

all-fluid rotary joint
all-fluid rotary joint
RotaVariacor®

Pressure: 0 bar - 650 bar
Rotational speed: 0 rpm - 100 rpm

RotaVariacor rotary joint The company MID VARIACOR, sells a range of fittings to optimize the cost of the function "rotary joint" for simple applications without severe technical constraints. ...

oil rotary union
oil rotary union

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

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, ...

water rotary union
water rotary union
S series

Pressure: 50, 40 bar
Rotational speed: 3,500, 3,000, 2,500, 750 rpm
Nominal size: 0.25 in - 2 in

These unions are available with two different balanced and microlapped sealing assemblies: N Seal (Standard Sealing) with carbon graphite to carbide seals for application with filtered water. D Seal (Heavy ...

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ROTOFLUX s.r.l.
water rotary union
water rotary union
S series

Pressure: 10 bar
Rotational speed: 750 rpm
Nominal size: 1.5 in - 5 in

The unions ROTOFLUX S65, S80, S100 and S125, thanks to large free passages, are used when large fluid flows are needed. They are provided with balanced and microlapped seals made with carbide and carbon graphite. The ...

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ROTOFLUX s.r.l.
water rotary union
water rotary union
S series

Pressure: 50 bar
Rotational speed: 3,500, 5,000, 7,000 rpm
Nominal size: 0.5, 0.375 in

These unions are available with two different balanced and microlapped sealing assemblies: N Seal (Standard Sealing) with carbon graphite to carbide seals for application with filtered water. Fluid pressure ...

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ROTOFLUX s.r.l.
air rotary union
air rotary union
RU001 series

Pressure: 0 psi - 7,000 psi
Rotational speed: 0 rpm - 250 rpm
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.
air rotary union
air rotary union
AJT1 series

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AUTOMAX
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 ...

refrigerant fluid rotary union
refrigerant fluid rotary union
ROTOKOMBI

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

... 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
water rotary union
water rotary union
086, 087 series

... 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 ...

air rotary joint
air rotary joint

Rotational speed: 0 rpm - 100 rpm

Hybrid Rotary Joint With Reliable Design Flexible solution Electrical,pneumatic,hydraulic ,fiber optical hybrid Prompt response Quick delivery Competitive price Superior after-service Hybrid Rotary ...

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ByTune Electronics
oil rotary union
oil rotary union
1K

SINGLE-PASSAGE OIL 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
water rotary joint
water rotary joint
R series

Pressure: 10 bar - 50 bar
Rotational speed: 1,500 rpm - 3,000 rpm
Nominal size: 9 mm - 150 mm

The Type R Rotary Joints are manufactured with damage-resistant materials. The materials used by the type R rotary joints are brass and stainless steel. These joints ...

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Johnson Fluiten
water rotary union
water rotary union

Pressure: 180 bar - 350 bar

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SAURO ROSSI & C. Snc - Avvolgitubo Hose-reel
air rotary union
air rotary union
300 - GR series

Pressure: 12 bar
Rotational speed: 550 rpm - 2,000 rpm

Farbo rotating joints represent a valid solution for fluid distribution problems in rotating machinery. The right choice of materials and special gaskets garantee a long lasting working life even with ...

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