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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: HAIDA
  • Model Number: HD-A546
  • Power: Electronic
  • Usage: Paper Testing Instrument
  • Maximum sample width: 100 mm
  • Voltage: 110/220V AC, 250W
  • Set of précised control weight provided: 20g x 4 ea 50g x 4 ea 100g x 4 ea 300g x 2 ea
  • Resolution: 1/250,000
  • Compressed air: 6 kg/cm2
  • producer: guangdong China(mainland)
  • function: bending stiffness test
  • color: gray
  • power: electric
  • usage: Paper board 4 point bending stiffness testing machine

Packaging & Delivery

Packaging Details Each set paper board 4 point bending stiffness testing machine is protected with resin fiber and PP film, then put into Strong wooden case with operation manual and video inside.
Delivery Time Shipped in 15 days after payment

Corrugated Paper Four Point Bending Stiffness Resistant Measuring Machine


Product Description


Product advantages:


 1.     Length of the test board is one of the critical factor to affect the test result, paper board 4 point bending stiffness testing machine  give you an automatic solution. Operator use one button to widen or shorten  the opening gap between the clamping plate, when your designated width approach, data can automatically write into the computer for calculation, accuracy up to 0.1mm


 2.     Since we are using pneumatic clamping plate to fix the test board, small warp, twist or curl of the board is no longer a problem in the test. This is also the reason to choose 4-point bending method to test the paper stiffness instead of other methods such as 2 point and 3 point bending.


3.    Use non contact device to measure the deflection of the paper board, this can eliminate any un-expected loading onto the paper board such as spring load or    weight of the measuring probe. The new feature of HD-A546 increases the credibility of the test result.


4.     No matter the thickness of the samples, HD-A546 equipped with an intelligent detector to get the zero reference point. Test becomes more convenience.


5.     Shear force (one of a uncertainty) in this test method has been overcome by applying special mechanism on the clamping plate.

6.     The test report prints out use conventional office printer. Thermal paper no longer use. Text and graphic printed on the thermal paper can not last long, it will fade out when time pass. Therefore use common typing paper let the file keep much longer.    









Main parameters:


Maximum sample width:

100 mm

Set of précised control weight provided:

20g x 4 ea

50g x 4 ea

100g x 4 ea

300g x 2 ea


110/220V AC, 250W

Compressed air:

6 kg/cm2



Applicable Standards

DIN 53 121, ISO 5628, SCAN P65, TAPPI T820, TAPPI T836


Mean Value, Standard Deviation, Coefficient of variation, max and min values of the series, MD/CD ratio, Geometrical mean of MD and CD

Test piece

The sample size depends on board type, normally 50–100 mm (2–4 in) wide and bending length at least 120 mm (4.7 in) longer than chosen bending length. Maximum thickness is 16 mm (0.6 in)


Pneumatic clamping effectively eliminates any problems with twisted and curled test pieces

Control Method

PLC control

Result Output

USB Flash Drive – Print Out the Image File

Tabular or graphical presentation of result


USB interface (Optional)


1.Bending length :50, 100, 150, 200 or 300 mm (2, 4, 6, 8 or 12 in)

2.Dear Weights:20 -1020 g(0.044-2.25lb )


0.5–500 Nm (4.5–2770 lbf × in)

Measurement Tools

Laser Displacement Detector

P.S non contact device to measure the deflection of the paper board, this can eliminate any un-expected loading onto the paper board











Product features:


1)     A precise sensor measure the linear deflection caused by bending display on the screen and send to the micro-processor for calculation through the communication port.


2)   This 4 point bending stiffness testing machine  is to measure the resistance of the test piece offer to bending, in the region of elastic deformation.


3)    Automatic zero set point of the transducer compensate various thickness of the paper board.


4)    Length of paper board is adjustable from 50 to 300 mm. Make use of a stepping motor ,left/right turn ball screw, the change of paper board length is much easier , the required length can be set and automatically done by the machine.


5)    The 4 point bending stiffness testing machine is suitable for corrugated paper board (Flute A,B,C,D & E)


Test standard:   ISO 5628


Packaging & Shipping


Company Information

Our company Introduction:

HAIDA INTERNATIONAL is a professional manufacturer of various kinds of testing equipments over 24 years. HAIDA products are widely used in paper products, packaging, ink printing, adhesive tapes, bags, footwear, leather products, environment, toys, baby products, hardware, electronic products, plastic products, rubber products and other industries, and applicable to all scientific research units, quality inspection institutions and academic fields.




Why choose us? 

1. Considerate Service Different countries plugs, manually change the-voltage from 110V to 220V, insurance indicator.


2.Excellent After sale Service: 
12 months warranty. Besides, we can help you to repair your problem controller freely, Free replacement parts, even it's not from our factory's. What you need to do is to send us the controller.We can offer operation video and English operation muanual. We can provide video-con


We will sign a letter of commitment while we sign the contract, which will improve your confidence to us.


4.Good Packaging:

Simulation Animatronic Customer Triceratops are covered with air bubble film before put them into the wooden case, which not only has good shock absorption, impact resistance, heat sealing and also has the advantages of nontoxic, odorless, moisture corrosion, good transparency etc.                                         


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