Product Categories

What is a reaction torque sensor (aka static torque transducer)?

Reaction torque sensors are torque measuring units that convert a torsional mechanical input into an electrical signal output that can be measured and further processed. Strain gauges are bonded onto a spring element that is made from aluminum, alloy steel or stainless steel with specially designed structure, which deforms when a twisting force is applied which is then detected effectively by the strain gauges, in most cases, four strain gages are used to form a Wheatstone bridge configuration and obtain maximum sensitivity.

Reaction torque transducers measure the torsional force transmitted to rigid structural members in both clockwise and counterclockwise directions. Although primarily used for non-rotating torque measurement, these static torque cells can also measure rotational torque according to Newton's third law of motion: For every action, there is an equal (magnitude) and opposite (direction) reaction.

Reaction type torque transducers play an essential role in applications such as actuator and valve testing, product performance and safety factor testing, coil winding systems, torque tools calibration, process control, container closure torque verification and so on.

LCS supplies reaction torque sensors with rated capacities from 0.1Nm to 10kNm, common mounting configurations include flange-to-flange, shaft-to-shaft and flange-to-square. For applications that standard torque transducers are not applicable, our technical team can work with you to find a cost-effective and reliable solution to meet both your mechanical and electrical needs.