Yet one aspect is often underestimated: calibration. A torque wrench is only as reliable as its last check.

 

Why calibration is essential

A torque wrench is a measuring instrument. Intensive use, wear or improper storage can slowly reduce its accuracy.

This has immediate consequences:

• Excessive tightening torques can damage bolts or threads.
• Moments that are too low lead to loosening joints and vibration problems.
• Loss of reliability at critical connections in turbines, pipes or pumps, for example.

 

Calibration ensures that the torque wrench continues to operate within established tolerances - essential for safety, performance and compliance with quality standards.

 

What exactly calibration entails

Calibration is the process of comparing the torque wrench to a reference standard (a calibrated tester) to measure deviations.
During calibration, it checks that the specified torque matches the actual torque.

If necessary, the wrench is adjusted, and a calibration certificate is issued showing that the tool meets the required standard (such as ISO 6789).

 

The risks of uncalibrated torque wrenches

• Failure costs: errors in connections lead to costly repairs or downtime.
• Safety risks: overloaded bolts may break unexpectedly.
• Audit problems: projects without a demonstrable calibration history do not meet quality or safety standards.
• Reputational damage: errors in assembly processes can undermine the reliability of the final product.

 

How often should you calibrate?

The frequency depends on:

• Usage: the more often the key is used, the faster wear will occur.
• Load: heavy industrial use requires shorter calibration intervals.
• Environment: temperature fluctuations or dirt can affect measurement accuracy.

 

As a guideline:

"Check and calibrate at least once a year, or every 5,000 applications."
But in critical applications (such as offshore or power plants), many companies recommend semi-annual calibration.

 

How Archey supports customers

Archey offers not only high-quality torque wrenches, but also a complete calibration and maintenance program:

• Calibrated torque wrenches supplied with certificate.
• Recalibration service according to international standards (ISO 6789).
• Advice on proper torque settings per application.
• Training and knowledge sharing on safe and precise operation of torque wrenches.

Thus, Archey helps industrial customers ensure security and continuity in every connection.

Conclusion

A torque wrench is no ordinary tool, but a precision instrument. Without regular calibration, reliability decreases imperceptibly - with all the consequences that entails.By investing in calibrated tools and periodic checks, you avoid failure costs, increase safety and guarantee quality at every stage of the process.With Archey as your partner, you choose precision, certainty and craftsmanship down to the Newton meter.