BoltSafe offers bolt load sensors that measure the bolt load in a bolted construction during assembly and over time. These sensors can be used to determine the right tool setting for tightening the bolts to reach the desired bolt load. The coefficient of friction can now be determined with a simple test rather than guessed. Without BoltSafe sensors, gasket joints can start leaking or are overloaded to compensate for later relaxation, especially when using hydraulic tensioners. Bolts could come loose or even break. Our torque sensor equivalent prevents these problems and the unnecessary checkups that come along with these issues.
BoltSafe does not use strain gauges or piezoelectric technology, but magnetoelastic technology. Our sensors measure the change in the magnetic field instead. Place a BoltSafe sensor on the non-driven side of a bolted connection, preferably under a nut. When the bolt is being tightened, force is applied to the washer. This will result in a minor deformation of the washer. The sensor then measures the changes in electrical resistance caused by these deformations. This is the data that we use to determine the bolt load at any given moment.