The electrically driven Tensor ST Revo is a hand-held high-torque assembly system. In eight variants, the torque range is between 60 and 4000 Nm and the speed range is between 396 and 20 rpm. The control unit is a PowerFocus 4000 unit. The pistol grip tools with a 360° swivel device have a torque transducer and a protractor. Methods of the screw process control are torque control / rotation angle monitoring, rotation angle control / torque monitoring, torque and rotation angle control, stretch control and screw synchronization. One-step, two-step, Quickstep and ErgoRamp are available as tightening strategies. The display and the LEDs on the tool as well as the configurable loudspeakers give the operator a feedback on the status and the screwed result of each tightening operation. The system records the assembly data of up to 10,000 screw connections for screw process optimization. The functional range of the PowerFocus 4000 is determined by an optimally suited Rapid Backup Unit (RBU). The RBU transfers the functionality to the controller and serves as a backup for programming and configuration. This minimizes downtime. 
The hand-held and monitored Tensor ST Revo screw system is used, for example, for chassis and axle mounting, screwing the cab to bodywork and roll-over protection, for mounting counterweights and for wheel mounting. Barcode scanners, socket wrenches and torque amplifiers are some of many optional components.