Tools used to tighten threaded fasteners have mechanisms and sensors that detect the applied torque and stop the tool when the torque reaches the engineered specification range for the joint. All tools need to be adjusted to accurately achieve the required applied torque for the specific joint it is working on. Calibration is the process of making this adjustment and verifying the tool is achieving the requirements.

Verification is the process of testing or checking the shut-off point of the tool against a known torque measurement unit to confirm that the tool is performing the tightening operation consistently based on the manufacturer’s specification for the tool.

The deviation between the tool output and the measuring unit can be calculated and the tool adjusted to optimize the performance of the tool for the application. This process of adjustment and documentation of the deviation is referred to as calibration.

The general rule is tools must be verified at regular intervals and the process must documented so you can monitor any changes in the deviation between tool output and reference measurement. At a minimum, tools should be calibrated at least once a year and any time maintenance or repair is performed on the tool.

Atlas Copco can help you develop tool testing methods and calibration standards tailored to your applications, ensuring you maintain highest quality in your production process.

When it’s time to calibrate your tools, whom you choose to perform the calibration work can make all the difference. Atlas Copco is different in that we perform ‘As Found’ tests on all tools and will alert you immediately if the tool is out of tolerance. This gives you the opportunity to protect your production and implement corrective actions before the next calibration date.

Furthermore, Atlas Copco can support your containment reaction plan should we identify a tool as out of tolerance including onsite consultation with our tightening experts to discuss the implications for your production.

Your tools need to be measured and verified at regular intervals to ensure they are working properly. Atlas Copco can simplify this process for you providing complete verification and calibration services for all your tightening tools.

Want to learn more about this convenient service or book an appointment? Contact Atlas Copco today for more information.