Seite wählen
Header für Seite Drehdurchführungen zeigt drei DDF in unterschiedlichen Größen

High-Pressure Rotary Unions

Reliable Rotary Unions For Hydraulic Systems Up To 400 bar

In modern industrial systems, rotating components are often at the heart of complex processes. At the same time, fluids – particularly hydraulic media – must be transmitted safely, without leakage and reliably under extreme pressure. This is precisely where KONSTANDIN’s high-pressure rotary unions come into play.

These specially designed components provide a reliable connection between stationary and rotating machine parts and ensure safe media transmission even under the most demanding conditions.
With a pressure resistance of up to 400 bar, they are ideally suited for highly loaded hydraulic systems.

  • Continuous hydraulic supply to rotating components
  • Loss-free transmission of pressure and flow
  • High efficiency combined with maximum operational reliability

Thanks to their robust construction and precise sealing, they ensure leak-free operation even at high pressures and maintain consistent system performance.

Designed For Extreme Conditions

Whether exposed to dust, high temperatures, or sustained high pressure, industrial processes place the highest demands on all components used. KONSTANDIN’s high-pressure rotary unions are specifically designed to meet these challenges.

They ensure durable, safe, and efficient media transmission, even under continuous 24/7 operation. This contributes significantly to process stability, equipment availability, and productivity.

When it comes to the safe transmission of hydraulic media in rotating systems, KONSTANDIN’s high-pressure rotary unions provide a reliable solution. They combine maximum performance with the highest operational safety, even at pressures of up to 400 bar.

A key component for anyone relying on precise hydraulics, robust engineering, and long-lasting systems in industrial applications.

Typical Applications in Hydraulics
The combination of hydraulic systems and rotary unions is essential across many industrial sectors. Rotary unions are used in a variety of machines and applications, including:

Excavators and Cranes
For the safe supply of hydraulic pressure to rotating superstructures

Machine Tools
Precise control and cooling of rotating tools

Tunnel Boring Machines
Reliable power transmission under extreme conditions

Water Jet Cutting Machines
High-pressure media supply for precise cutting processes

High-pressure Cleaners
Efficient transfer of cleaning media at maximum pressure

Swivel Drives with Clamping Systems
Smooth and controlled motion in rotating applications

Discover our stainless steel versions of the rotary union series.

Advantages of the KONSTANDIN Rotary Union

  • Reliable media transmission up to 400 bar
  • Optimised for rotating systems
  • Robust and durable design
  • High operational safety
  • Flexible integration

High-Pressure Rotary Union
G 1/2″

Article no. ZK5188-H

Drehdurchführung XXl in 2 Zoll

Type DDF-1-1/2″-H

TECHNICAL DATA
Channels: 1
Connection: G 1/2″
Speed: max. 90 rpm
Rotary Movement: oscillating,
pressurized
Pmax: 400 bar
Medium: filtered 5µm
Temperature Range: +15°C to +50°C

High-Pressure Rotary Union
G 1/2″

Article no. ZK5545-H-SO-06

Drehdurchführung XXL in 3 Zoll

Type DDF-2-1/2″-H-SO

TECHNICAL DATA
Channels: 2
Connection: G 1/2″
Speed: max. 80 rpm
Rotary Movement: intermittent,
pressurized
Pmax: 350 bar
Medium: Hydraulic
Temperature Range: +15°C to +50°C
Features: – Spindle: Stainless Steel
– Housing: Stainless Steel

Rotary unions
in stainless steel

Article no. ZK5111

Type DDF-3-1/8“-H-SO

TECHNICAL DATA
Channels: 3
Connection: G 1/8″
Rotation speed: 250 rpm
Rotary movement: pulsed
Pmax: 70 bar
Medium: Compressed air, CO² , aerosol
Temperature range: 0°C to +80°C
Features: – Special seals
– Special media
– Special geometry
– Stainless-steel design
– Hollow bore in shaft (ø25mm)
Application: Cryogenic honing process
with ATS system

Rotary unions
for low temperatures (up to -20°C)

Article no. ZK5120

Type DDF-2-M33x2-SO

TECHNICAL DATA
Channels: 2
Connection: M 33×2
Rotation speed: 25 rpm
Rotary movement: continuous
Pmax: 23 bar
Medium: helium
Temperature range: -20°C to +50°C
Features: – Preparation for current transformer
– special seals
Application: Wind turbine

 

High-Pressure Rotary Unions

Benefit directly from our know-how. You´ll be amazed that our employees already know your problem…