Rotary couplings, without/with leakage recirculation
Hydrokomp Hydraulische Komponenten GmbH Logo

Select your language

Inquiry list

Rotary couplings without/with leakage recirculation


Rotary joints
axial and angular


Rotary couplings
multi conductor,
without leakage recirculation



Rotary couplings
multi conductor,
with leakage recirculation










Rotary couplings transfer hydraulic oil from a fixed to a rotating machine part. The assembly is done in the rotation axis of the subassembly. Depending on the number of junction levels several single-acting or double-acting hydraulic elements can be connected. On principle, the rotary coupling is only suitable for hydraulic oil. If pneumatic shall be transferred, the catalogued elements can be used providing that the air is filtered and lubricated to guarantee seal greasing and corrosion protection.

In the design stage it needs to be considered that the rotation movement is obstructed by the seal friction. This frictional drag is pressure dependant and must be considered for the drive torque of the rotary table. Corresponding information can be found in the reling diagrams which show the starting torques existing while all junction levels are pressurised.


Special features:
  • axial and radial connections in the piston

  • available without and with leakage recirculation

  • appropriate for pneumatic and hydraulic systems

  • combinable with multiple coupling systems (KDS)

  • combinable with electrical slip rings as a special design

  • standard designs and special designs available








Important operating instruction:

For the operating circumstances, operating pressure and torque must be aligned. Please see the diagrams on data sheet 500-3.

Mounting instruction:

The rotary coupling must be mounted in a way that no transverse moment is effected on the standing or rotating element. It has proven to be best to screw the standing housing with its ports towards the clamping divices and to protect the rotating piston only against twisting (no initiation of bearing forces).

The line connection from the torque support to the rotating piston should be done via hoses only to avoid the initiation of torque into the housing. The rotary coupling may only be taken into operation when all junction levels are connected to the power unit in order to guarantee the necessary seal lubrication.

The multiple passage rotary couplings have axial and radial G1/4 threaded ports in the rotating piston. In addition, they can be connected axially at the rotating piston with O-Rings 16 x 2. In this case, please calculate the necessary screw forces of the fixing screws imperatively.

Application example:


  1. hydraulic fixture
  2. pipework
  3. rigid screw fixing
  4. hose pipe
  5. distance
  6. leakage line
  7. torque support



We gladly consult you by phone call:

Customer service on-site

Find a consultant in your area!

Weltkarte mit HYDROKOMP Vertriebspartnerländern weltweit

Technology that connects

HYDROKOMP Headquarters 1

Founded 1998, HYDROKOMP designs, manufactures and distributes hydraulic components, coupling systems and clamping technology for mechanical engineering, fixture construction, tooling and many other branches of industry also for different operating conditions.

HYDROKOMP Headquarters 2

HYDROKOMP is the right supplier for companies of mechanical engineering fixture construction, tooling and many other branches of industry worldwide. Constructive ideas and customer-specific designs are our particular strengths.

HYDROKOMP Production Facility 1

Each and every one of our products is developed and manufactured according to the highest quality standards. With modern CAD systems we design new solutions. After that, current procedures of precision manufacture and quality assurance are next in process.

HYDROKOMP Production Facility 2

Our qualified employees and our modern CNC machinery ensure high flexibility product variety and quality. HYDROKOMP products are designed for long-lasting application in rough industrial daily routine. Our customers can surely trust that the process will flow smoothly.

previous arrow
next arrow



We use cookies on our website. Some of them are essential for the operation of the site, while others help us to improve this site and the user experience (tracking cookies). You can decide for yourself whether you want to allow cookies or not. Please note that if you reject them, you may not be able to use all the functionalities of the site.