smartTensioner The tensioning revolution: We took the well known principle of hydraulic bolt tensioning, removed all hazards, disadvantages and flaws, and added high precision, process saftey and automatic documentation. The result is a product we call the tensioning revolution! The main idea: integrate the pump into the tensioner and use digtal technology! lighter, smaller, faster, safer, easier, precise This was good but the actual revolution followed by the development of the BoltForceDetermination: For the first time ever a tensioner can determine and meassure the bolt force, that remains in a bolt.