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Flexural Series Compression Machines

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Flexural Series Compression Machines

Supports the following standards: ASTM C78, EN 12390-5, EN 1339, EN 1338, ASTM C293

These Flexural Series Frames are designed to be used as auxiliary frames in conjunction with a concrete compression machine controlled by Humboldt’s HCM-5080 or HCM-5070 Automatic Pump and Controller Systems. See page 199 -200 for more information on Humboldt‘s Automatic Pump and Controller Systems.

These add-on flexural machines provide the optimum in testing performance and evaluation options, enabling you to get the best results from your test measurements.

They can be used to perform strength tests of beams and kerbs, splitting tests of cobblestone, and also three- or four-point tests. These frames support a hydraulic ram and upper sub-platen assembly incorporating a spherical seating. The upper and lower sub-platens will accept various specimen loading accessories, which are supplied separately, please enquire. The detached design of these flexural frames allows for enhanced setup options in the lab.

The upper and lower platens will accept various specimen loading bearers, which are sold separately.

Purchase Humboldt’s HCM-5070 Auto Console Controller for best operation

These three Flexural machines can be controlled with Humboldt’s HCM-5070 Automatic controller, which is designed to make fast work of testing a variety of standard beams. The HCM-5070 Console controller provides an easy-to-use automated testing work flow— just choose the test standard you wish to run from the menu and the controller will quickly guide you through the setup.

Choose the ”Fast Testing“ option and your compression frame will run tests as fast as you can load your beams while sequentially numbering each test automatically. Just click on the start button. The HCM-5070 controller features a robust, reliable and cool-running 1hp pump, which works together with the controller for full operational control.

The HCM-5070 controller‘s high-resolution, 7-inch, color, touch-screen provides accurate, precision frame operation, setup and calibration. Test setup is simple, just choose the ASTM standard you wish to use and the controller will quickly walk you through the setup procedure. Calibration is also easy with these controllers, allowing you to use from 1 to 10 points to calibrate the machine in any increment you choose. It also provides an accurate motor-control knob, which let’s you dial in precise loads for calibration. Humboldt‘s controllers provide two channel inputs for load, which allows for the control of two separate compression frames when using the HCM-HP4014 selector valve accessory. The controller also provides two additional channel inputs for displacement, which provides an easy solution for determining Poisson’s ration and Young’s modulus testing.


  • Provide two channel inputs for load, which allows for the control of two separate compression frames
  • Provides two additional channel inputs for displacement, which allows performing extensometer and compressometer testing
  • 7″, high-resolution color touch-screen display with live readout, graphical and tabular display
  • Easy test setup, just choose the standard you wish to test for and the controller will walk you through the complete setup
  • Pre-programmed to run the following tests: ASTM C39, ASTM C78, ASTM C293, ASTM C469, ASTM C496, ASTM C1019, ASTM C109/C109M, BS EN 12390-3, EN 12390-5,EN 1339, EN 1338
  • Integral storage within the controller of up to 1000 tests and 3000 points per test
  • Simple, Fast and accurate machine calibration with accurate, motor-control knob



HCM-1142 Specifications

Capacity (100kN)
Piston Stroke 2.95″ (75mm)
Bending Roller Length 6.30″ (160mm)
Bending Roller Dia. 1.50″ (38mm)
Lower Roller Distance 29.50″ (750mm)
Overall Width 33.00″ (840mm)
Overall Depth 33.20″ (845mm)
Overall Height 47.80″ (1215mm)

HCM-1143 Specifications

Capacity (200kN)
Piston Stroke 1.96″ (50mm)
Bending Roller Length Optional
Bending Roller Dia. 1.50 -0.78″ (38-20mm)
Lower Roller Distance 35.40″ (900mm)
Overall Width 39.30″ (1000mm)
Overall Depth 50.80″ (1290mm)
Overall Height 50.80″ (1290mm)

HCM-1144 Specifications

Capacity (300kN)
Piston Stroke 8.66″ (220mm)
Bending Roller Length >20.10″ (510mm)
Bending Roller Dia. 1.6″ (40mm)
Lower Roller Distance 40.1″ (1020mm)
Overall Width 26.40″ (670mm)
Overall Depth 53.90″ (1370mm)
Overall Height 87.00″ (2210mm)

Additional information

Product Options

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Concrete-Compression (Data Sheet PDF)



EN 12390-5

EN 1339

EN 1338