The Proof of concept

July 9, 2021

The KRABO® technology is tested with a Proof of Concept (PoC) board.

The KRABO® team developed the PoC in its laboratories to evaluate the performance of KRABO® technology. The PoC board contains all the components and features required to monitor the tension of a bolt in real-time. The board’s compact size is similar to the size of a mobile phone. A sensor mounted on the bolt head is connected to the board via cable. The PoC communicates the data with wireless technology to a personal computer.

Three different use cases are tested.Three different bolt p/n currently in production in Fontana Gruppo plants are selected for testing the KRABO® PoC: a wheel bolt M14x30, an infrastructure bolt M14x60, and a structural bolt M22x110. The tests are performed clamping the bolt with a reference load cell that can be used to calibrate and evaluate PoC performance. In this operation our engineers verified two indicators of KRABO® technology performances: the accuracy and linearity of tension measurement.

The test shows promising results.
The test performed in our laboratories showed that the KRABO® technology is capable of monitoring in real-time the bolt tension with high accuracy and high linearity in different application scenarios, from the automotive industry to civil engineering. Considering the promising achievement, KRABO® is currently working to transform the PoC into a miniaturized device to be inserted directly into the bolt and remove cables.

Test result. The PoC outputs a load which highly conforms to the output of the reference load cell.


Need more information?

Please email us and our support staff will contact you back.



    Via Fontana 9, 20837 Veduggio con Colzano (MB), Italy