Main Menu

See All Software See All Instruments See All Transducers See All Vibration Testing Equipment See All Electroacoustics See All Acoustic End-of-Line Test Systems See All Academy See All Resource Center See All Applications See All Industries See All Services See All Support See All Our Business See All Our History See All Global Presence

Main Menu

See All nCode - Durability and Fatigue Analysis See All ReliaSoft - Reliability Analysis and Management See All Test Data Management See All DAQ Software See All Drivers & API See All Utility See All Vibration Control See All High Precision and Calibration Systems See All DAQ Systems See All S&V Hand-held Devices See All Industrial Electronics See All Power Analyzer See All S&V Signal Conditioner See All Acoustic See All Current and Voltage Sensors See All Displacement See All Force sensors See All Load Cells See All Pressure See All Strain Gauges See All Temperature Sensors See All Torque Sensors See All Vibration See All Accessories for Vibration Testing Equipment See All Vibration Controllers See All Measurement Exciters See All Modal Exciters See All Power Amplifiers See All LDS Shaker Systems See All Test Solutions See All Actuators See All Combustion Engines See All Durability See All eDrive See All Production Testing Sensors See All Transmission & Gearboxes See All Turbo Charger See All Training Courses See All Acoustics See All Asset & Process Monitoring See All Custom Sensors See All Data Acquisition & Analysis See All Durability & Fatigue See All Electric Power Testing See All NVH See All Reliability See All Smart Sensors See All Vibration See All Weighing See All Automotive & Ground Transportation See All Calibration See All Installation, Maintenance & Repair See All Support Brüel & Kjær See All Release Notes See All Compliance See All BKSV Worldwide Contacts

Main Menu

See All API See All Microphone Cartridges See All Microphone Sets See All Microphone Pre-amplifiers See All Sound Sources See All Acoustic Calibrators See All Special Microphones See All Accessories for acoustic transducers See All Experimental testing See All Transducer Manufacturing (OEM) See All Piezoelectric Charge Accelerometers See All Piezoelectric CCLD (IEPE) accelerometers See All Electroacoustics See All Noise Source Identification See All Environmental Noise See All Sound Power and Sound Pressure See All Noise Certification See All Industrial Process Control See All Structural Health Monitoring See All Electrical Devices Testing See All Electrical Systems Testing See All Grid Testing See All High-Voltage Testing See All Vibration Testing with Electrodynamic Shakers See All Structural Dynamics See All Machine Analysis and Diagnostics See All Dynamic Weighing See All Vehicle Electrification See All Calibration Services for Transducers See All Calibration Services for Handheld Instruments See All Calibration Services for Instruments & DAQ See All On-Site Calibration See All Resources See All Software License Management

Hydrauflush: Maintenance and Overhaul of Hydraulic System

Hydrauflush international, Netherlands


Hydrauflush International B.V. in Wormerveer, Netherlands, specializes in the maintenance and repair of hydraulic installations. Some of the maintenance work is carried out on site, with the overhaul of hydraulic pumps, motors, cylinders and power units being performed in the workshop. Hydrauflush has a 400 kW test bench for motors and pumps up to 1000 cc, one of the largest in the country. Since May 2015, measurement data is being processed using an HBM QuantumX universal measurement amplifier and displayed live, next to the test bench using HBM’s catman®Easy software to give the tester and operator an outstanding and immediate idea of the progress of the tests.


HBM Measurement Amplifier Processes Data From Large Hydraulic Test Bench

Hydrauflush International was founded in 2008 and specializes in the overhaul and maintenance of hydraulic installations. These are mainly large hydraulic systems on ships, offshore and dredging installations, as well as in cranes, locks and heavy industrial installations. The company has achieved an impressive track record in the overhaul of such systems. Its customers include Allseas, Boskalis, Heerema, Huisman, Rusch Offshore and Van Oord. One project that very much appealed to the imagination in the sector was the complete overhaul of the hydraulic systems on the DEME offshore fall pipe vessel ‘Rollingstone’ in just two and a half weeks. This involved a total of 15 large pumps, motors and other items. “One of our specialities is flushing hydraulic systems”, says Michel Dijkman, CEO of Hydrauflush. “To do this we have developed a flushing container in house that can be used all over the world. We also have two units that are fitted out as hose containers, with which we can customize hydraulic hoses and pipes on site, pressurize them up to 1790 bar and certify them.” Hydrauflush has also become more active in the industry in recent years, in particular in the maintenance and overhaul of hydraulic systems in factories and recycling installations.

The Hydrauflush staff removes hydraulic systems and takes them to Wormerveer, where they are overhauled in the workshop. Once the pumps, motors, power units, cylinders, manifolds and other hydraulic components have been overhauled, the systems are taken back to the ships, platforms and other installations and reinstalled. Some of the work is carried out in Hydrauflush’s own workshop – in collaboration with other specialists where activities such as applying special offshore coatings are concerned. The Hydrauflush workshop contains a 400 kW electrical test bench for motors and pumps with a swept volume of up to 1000 cc. This is one of the largest test benches for hydraulic installations in the country and is a real USP for Hydrauflush. A frequency regulator enables the controlled starting of motors and pumps up to 1480 revolutions per minute (rpm). Complete installations for the test set-up can be constructed, including motor, valves, manifolds and cylinders. Systems are not just tested on the test bench, but are also adjusted and certified there in accordance with factory specifications.

Direct monitoring of tests

Hydrauflush has been using an HBM QuantumX measurement amplifier since 2015. A number of Hydac measuring sensors, certified for offshore use, measure temperature, oil flow, control pressure and oil pressure up to some 630 bar. “We eventually want to perform torque tests on the test bench as well”, says Dijkman. “We fully process all measurement data using HBM’s catman®Easy software. We display them instantly on the screen next to the test bench, so that the tests can be monitored directly. Tests take an average of about three hours. The software visualizes and records the test data. catman automatically generates test reports for both our test records and our customers, which is quite an improvement compared to our traditional approach using Microsoft EXCEL™ sheets we provided before. HBM can also remotely log into the DAQ system to support us if any problems arise.”

“The maintenance of hydraulic systems doesn’t always get the attention it deserves”

“We have the impression that the maintenance of hydraulic systems doesn’t always get the attention it deserves”, says Michel Dijkman, CEO of Hydrauflush. “Hydraulic systems are seen as being very robust. That is true, but it doesn’t mean that maintenance can be ignored. We come across different situations, which depend very much on the application. Maintenance is regarded in some sectors as an irritating additional cost. We have seen hydraulic cranes and installations in some recycling plants and scrap yards that have had no attention for years. If the hydraulic installation leaks, is filthy and the hoses have never been replaced, purchasing a new system makes more sense than overhaul. We also see hydraulic installations – on offshore platforms for example – where maintenance has been carried out meticulously. The maintenance intervals of 10,000 hours of operation have been strictly observed and the hoses have been replaced every seven years. A breakdown in a hydraulic installation entails enormous expense and loss of time, so safety and availability have absolute priority there."


Related Products

No more result to load