Use of hydraulic oil in rotating unions
Injection molding and blow molding machines
Supply of hydraulic oil to rotating core pulls or index plates for precise tool movements.
Pressing and forming technology
Supply of rotating upper or lower punches with hydraulic pressure to ensure uniform pressing forces.
Testing and calibration systems
Rotating unions conduct test oil to rotating test specimens (e.g. shafts, couplings) and enable reliable function and leak tests.
Wind energy and pitch systems
Hydraulic control of rotor blade adjustment in onshore and offshore turbines, in which the oil is guided through rotating shafts.
Machine tools
Supply of clamping systems or hollow shaft spindles with hydraulic oil for fast tool changes and stable clamping forces.
Note: The applications listed are only an excerpt and are for illustrative purposes. Due to the large number of possible applications, not all use cases can be shown here.
Advantages
- Pressure-stable operation up to 30 bar, higher pressures possible as a special solution
- Leakage-free power and signal transmission during rotation
- Constant volume flows for reproducible movements
- Robust, low-wear sealing and bearing technology
- Low maintenance due to relubricatable ball bearings
- Compact designs for tight installation situations
- Quick replacement thanks to modular design
Conclusion
With rotary feedthroughs suitable for hydraulic applications, you can ensure that hydraulic fluids arrive cleanly and consistently without loss, even during rotating movements – a significant contribution to process reliability and efficiency.
