Torque Wrench Calibration for Optimum Functioning

In any industry, having the most dependable tools is quite essential. However, it is equally important to ensure these tools are maintained properly. Some tools operate perfectly without special attention and care, but a lot of them need it. Torque wrenches are among those that need to be calibrated regularly to ensure their optimal performance. Read on to understand the importance of torque wrench calibration.

What is a Torque Wrench?

These torque tools are designed to measure the bolts or nuts tension to ensure they are tight enough. It looks like a long-armed socket wrench which tends to bend once a turning force is applied to the handle. A torque wrench must be calibrated properly to ensure the fastener has the precise tension it requires to safely function.

Manufacturers design fasteners like bolts and nuts with appropriate torque values. When the faster is under-tightened, it cannot offer proper thread loading. When over-tightened, it is likely to lead to premature weakening and breaking of the fastener. Calibrating your wrench can be done by a professional laboratory or your own if you can assemble a calibrator.

Maintaining Accuracy

Apart from accuracy, calibration measures the dependability of the jobs carried out by the wrench every day. The frequency to calibrate them depends on factors such as the user, frequency of use and the working conditions. To maintain internal standards, these tools must be calibrated at least once every year.

When to Calibrate your Wrench?

Know that the readings may change between 2500 and 2800 repetitions. Because of this, consider calibrating the wrench if you have made 2500 repetitions. The reason is that nearly all manual torque audit wrenches come with internal springs that tend to shorten their length after some time. In turn, this causes an inaccuracy of the reading. Take note of the following reminders:


  • Note any changes in the performance of 2500-3000 repetitions.
  • In case torque errors reach more than the permissible limit, think about recalibration.
  • Keep in mind that recalibration is necessary if you use the tool frequently.
  • To maintain the calibration’s ideal level, follow general care tips in terms of storage and usage.

Using a dependable torque wrench makes a safer industry through precision and accuracy. It is necessary to control torque to guarantee the quality, reliability and safety of products. When a fastener fails and is not tightened properly, there will be latent failures.

News Reporter