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Components for Test Systems
 Hydraulic Components

  BIA Hydraulic Components

To help you accelerate your development process and get reliable test results, BIA provides a full range of hydraulic components, from the series of high-performance hydraulic actuators to hydraulic  power units, including service manifolds. All these components can be controlled altogether with the BMC800, BIA standard controller, through UTM, BIA universal control software. It allows you to build cost-effective test systems adapted to your needs or to upgrade existing ones.


The series of hydraulic actuators is designed for performance and durability test applications. Several solutions are available: linear/rotary motion, hydro-static/hydro-dynamic bearings depending on your test needs. Based on BIA field-proven experi-ence, these cylinders provide high performance results for servo-control applications with low main-tenance operation. Special design for higher performance or propulsion applications is also available to meet your specific requirements.

Examples of Applications
• Fatigue and durability of chassis parts • Transmission evaluation • Steering sub-systems • Seat and seat belt anchorage • Roof crush and door intrusion • Shock absorber evaluation • Suspension sub-systems • Vibration simulation • Road simulators • Multi-axial tables


• Durability and fatigue test
• Dynamic performance test
• Multi-axial motion plateforms (hexapod... )

Technical Description
• Hydro-dynamic bearings to protect piston rod in high frequency and small displacement applications
• Low friction sealing to avoid excessive wear on piston rod at low speed
• Double ended piston rod design
• Internal LVDT displacement sensor for closed loop control feedback
• Hydraulic cushions at each end of the stroke
• Long-life and low maintenance design.

Actuators Accesories
• Swivel head and base
• Fatigue rated load cell
• Servo-valves manifold


• Vibration and road load simulation (high frequency and low amplitude)
• Tests that generate side load forces on the actuator

Technical Description
• Hydro-static bearings to protect piston rod against friction under lateral loading
• Larger diameter of piston rod to increase lateral stiffness
• Double ended piston rod design
• Internal LVDT displacement sensor for closed loop control feedback
• Hydraulic cushions at each end of the stroke

Actuators Accesories
Supporting frame for horizontal use or pedestal base for vertical use
Fatigue rated load cell
Servo-valves manifold
Long-life and low maintenance design


Torsional durability and fatigue test
Torque generation for resistance test
Rotary static/dynamic performance test

Technical Description
High radial load capacity with minimal friction
Hydrostatic thrust bearings
100 degrees of dynamic rotation and 110 degrees of static rotation
A flange adapter to attach the test specimen
Internal RVDT angular sensor for closed loop control feedback
Hydraulic cushions at each end of the stroke
Long-life and low maintenance design

Actuators Accesories
Actuator mounting bracket
Reaction torque cell with mounting bracket
Servo-valves manifold
Diaphragm flexures


BIA hydraulic service manifolds (BHSM) are used to control pressure and flow distribution between hydraulic power unit and test stations.Each BHSM integrates pressure regulation, energy storage in hydraulic accumulators and oil filtration.

Technical Description
OFF/LOW/HIGH pressure control modes between HPU and actuators
1 to 4 stations with individual OFF/LOW/HIGH pressure modes
1 to 4 ports for each station with optional quick connections
4 independent hydraulic lines per port: pressure, pilot (for servo-valves), return and drain
Smooth pressure transition between two pressure modes
Hydraulic accumulators on each line for smooth fluctuation and continuous supply
Oil filtration on pressure and pilot lines


BIA standard hydraulic power units can supply from 20 lpm flow, up to 600 lpm. For higher needs, several units can be associated to work in parallel, with management of each power unit start according to the consumed flow.

Technical Description
Stainless steel reservoir with 3-threshold oil level detectors and temperature switches
Adjustable working pressure: up to 29 MPa (self-regulating pump)
Asynchronous three-phase motor, mounted on anti-vibration studs
An additional pump for cooling, filtration and flushing
Filters on HP/LP circuits with electric detection of inner pressure
Water/oil heat exchanging device ordered by thermostat
External or autonomous control system system
Noise reduction cover if required