Bending beam and shear beam load cells are types of force transducers used in weighing and force measurement, differing mainly in their design and the way they measure force. A bending beam features a rectangular block with a complete, through-hole, while a shear beam has a partial hole bored partway through its sides. Both types utilize strain gauges or thin-film sensors to detect deformation caused by an applied force, converting this into a measurable electrical signal for weight or force.  

Bending Beams

• Design: 

  A rectangular block of material with a strain gauge mounted on its surface or within its structure. 

• Function: 

  When a force is applied to the beam, it bends, and the strain gauges detect the resulting stretch or compression, changing their electrical resistance. 

• Applications: 

  Often used in weighing small to medium-sized vessels, platform scales, and weighing in process and dosing systems. 

Shear Beams

• Design: 

  A straight block with a distinctive partial hole or slot bored partway through its sides. 

• Function: 

  The applied load causes the beam to deform in a shear mode, and the strain gauges or thin-film sensors (which are often laser-welded into the beam) detect this deformation to measure the force. 

• Applications: 

  Employed in industrial weighing, including for large vessels and platforms, as well as in various industrial and agricultural applications. 

Common Features and Applications

• Sensors: 

  Both utilize strain gauges or thin-film sensors to measure force accurately and reliably. 

• Accuracy: 

  They are known for providing precise measurements in both static and dynamic applications. 

• Versatility: 

  These load cells find application in diverse fields such as agriculture, chemical industries, medical technology, machine building, and automation. 

• Mechanism: 

  They function by translating the deformation of the sensing element into an electrical signal, which is then converted into a weight or force value.