Large Hydraulic 4 Point Bending


Designed to meet AASHTO and ASTM standards


Frequency range 0.1 to 60Hz


Sinusoidal controlled strain or controlled stress fatigue test modes


The only machine on the market to accept variable beam sizes

Accepts variable beam sizes

The Large Hydraulic Four Point Bending Beam Machine uses advanced servo-hydraulic technology and a high-speed digital data acquisition and control system together with user-friendly software. During testing both graphical and tabular data are displayed on screen and test data is stored to disc in Microsoft Excel™ compatible format. The test frame is housed in a Temperature Controlled Cabinet with fan-assisted air circulation and a temperature range of -20 to 30°C. The unique constant torque clamping and three-transducer deflection measurement system of the 

The Large Hydraulic Four Point Bending Beam Machine can be configured to accept different beam sizes. This means that the ratio between beam dimensions and maximum aggregate size of test specimens will satisfy the requirements of the relevant European specifications. 

  • Frequency range 0.1 to 60Hz 
  • High-quality, Servo-Hydraulic Four-Point Bending Machine 
  • Double-acting, fatigue-rated hydraulic actuator with integral stroke transducer 
  • Star servo valve with “Sapphire Technology” 
  • Can be used with simple one or research level three LVDT transducers 
  • Accepts various beam sizes: 380 to 660mm in length and 50 x 50mm and 100 x 100mm cross sections. 
  • Temperature Controlled Cabinet range -20 to 30°C 
  • Sinusoidal controlled strain or controlled stress fatigue test modes 
  • Constant torque motorized specimen clamping to eliminate errors due to localized beam indentation 
  • Self-contained loading system 
  • User friendly software for determination of fatigue resistance and stiffness modulus 
  • Capable of performing healing, modulus, fatigue multi-stage testing and camera triggering 
  • Supplied with traceable calibration certificate 


Force Transducer

2250lbf (10kN)

Specimen Transducer Range

±0.09″ (3 x ±2.5mm)

Actuator Stroke

0.4″ (10mm)


0.1 to 60 Hz

Electrical Supply

415V 50Hz, 3 Ph

Compressed Air

7-10 bar (100-145psi) @ 3.5cfm (100lpm)

Test Frame


41.5″ x 43″ x 83″ (1050 x 1100 x 2100mm)

Working Space Required (WxDxH)

81″ x 83″ x 90.5″ (2050 x 2100 x 2300mm)

Desktop PC



Month Warranty

The software supplied with the equipment is user friendly software, the machine meets accurately ASTM standards.

  • Meets ASTM & AASHTO standards 100% 100%
  • Technical Support 100% 100%

Years of Experience In Materials Testing

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