OTT-JAKOB Power-Check Drawbar Pull Force Gauge

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In machine tool technology, monitoring pull-in force as part of quality assurance is essential in order to guarantee consistently precise machining results.

Reduced clamping force can have a long-term impact:

  • Poor surface quality due to vibrations
  • Increased tool wear and shorter tool life spans
  • Spindle taper corrosion caused by micro-movements
  • Tool breakage
  • Machine downtime
  • Risk of injury to the machine operator



Check the pull force of the clamping system with the OTT-JAKOB Power-Check 2 pull-force gaugeOTT-JAKOB Power-Check 2 is a testing device which measures the pull force of clamping systems. Four basic versions of the device are available, ensuring optimal measurement precision for every interface.

OTT-JAKOB Power-Check 2 pull force measurement table


OTT-JAKOB has the right exchangeable adapter for all common tool interfaces. The product range also includes adapters with gripper grooves which make it possible to automatically switch in the tool from the magazine position. In connection with the optionally available wireless module, measurements can be wirelessly transmitted to OTT-JAKOB receivers. Alternatively, Power-Check 2 can store up to 4,000 data sets which can easily be read out over a USB interface using the software supplied with the system.

Download the Power-Check Software

The built-in adjustable sleeve allows the user to account for tool tolerances during the measurement process. At the same time, this function can also be used to simulate the minimum and maximum tolerances of tools required to program the clamping system position monitor.



OTT-JAKOB Power Check Magazine to check pull-forceFully automated pull-in force measurement – with the Power-Check Magazine

The Power-Check Magazine is a cost-effective solution from OTT-JAKOB which is designed to check pull force. The measurements are sent to a receiver over a wireless connection. This characteristic makes the device ideal for taking measurements in inaccessible machines and for automation in the sense of Industry 4.0.

Unlike Power-Check 2, the Power-Check Magazine adapter is not exchangeable. The device is delivered as a single unit. The excellent two-year battery life and its capacity for up to 30,000 measurements are the reason for its excellent longevity. The protective case with IP68 rating ensures that the Power-Check Magazine functions reliably even in the most challenging conditions.








OTT-JAKOB USB Radio Stick for the Power-Check SystemThe USB radio stick is a receiver for the data transferred from our wireless transmitters Power-Check 2 and the Power-Check Magazine. It is able to receive data from numerous transmitters. Incoming measurements are displayed graphically in real time, saved and exported.






OTT-JAKOB RS485 BUS ANTENNAThe RS485 bus antenna from OTT-JAKOB was designed to regularly monitor clamping force. It receives measurements from the wireless Power-Check transmitters. When connected to the machine control system, it can automatically process the data it receives. It can read out values in both digital and analogue format.



OTT-JAKOB Power-Check