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 CS-LH4PT-BB 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 60°C (-4 to 146°F). The unique constant torque clamping and three-transducer deflection measurement system of the CS-LH4PT-BB 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 US and 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
  • Utilizes Star servo valve with “Sapphire Technology”
  • Unique three transducer on-specimen deflection measurement system
  • Accepts various beam sizes: 380 to 660 mm (15 to 26 inch) in length and 50 x 50 mm (2 x 2 inch) to 100 x 100 mm (4 x 4 inch) cross-section
  • Temperature controlled cabinet range -20 to 30°C (-4 to 86°F)
  • Sinusoidal controlled strain or controlled stress fatigue test modes
  • Constant torque motorized specimen clamping to eliminate errors due to localized beam indentation
  • User friendly software for determination of fatigue resistance and stiffness modulus
  • The possibility to make frequency/temperature sweeps
  • Covered for noise reduction

Force Transducer ±10 kN (±2250lbf)
Specimen Transducer Range mm (inch) 3 x ±2.5 (±0.09)
Actuator Stroke mm (inch) 10 (0.4)
Frequency 0.1 to 60 Hz
Temperature (Integrated Cabinet) -20 to 30°C (-4 to 86°F)
Electrical Supply CS-LH4PT-BB: 3 Ph 400 V 50Hz
CS-LH4PT-BB60: 3 Ph 208-230 V 60 Hz
Compressed Air 7-10 bar (100-145psi) @ 100 l/m (3.5cfm) (optional integrated extra)
Dimensions (WxDxH) mm (inch) 1050 x 1100 x 2100 (41.5 x 43 x 83)
Working Space Required (WxDxH) mm (inch) 2050 x 2100 x 2300 (81 x 83 x 90.5)
Estimated Weight Kg (lbs) 650 (1435)
PC Included

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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