What Is a Torque Tester?
Torque testers are testing devices that measure torque (unit: Nm in SI units), which is the force in the twisting direction.
There are general-purpose torque testers that measure the torque generated by installing a workpiece on a table and specialized torque wrench testers that inspect and calibrate torque wrenches used as tools.
Some companies can inspect and calibrate torque wrenches on your behalf and issue the various necessary documents in about one week.
Some general-purpose torque testers are manual testers in which the workpiece is fixed to a base, and the torque generated is measured by rotating the workpiece by hand.
Uses of Torque Testers
Torque testers are used primarily for the inspection and calibration of torque wrenches, for measuring the torque generated in laboratories, and when the torque of a product is an important quality parameter for manufacturers. We also have experience delivering torque testers to electric power companies, where strict control is required.
For example, purchasing a testing machine can be expensive when inspecting and calibrating torque wrenches. Still, if an agent performs the testing, the cost is several thousand yen to several tens of thousands of yen, with all necessary documentation, and can be done in a few days (3 to 10 days).
Principles of Torque Testers
A general-purpose torque tester has a torque sensor installed on a pedestal, and wiring and a touch panel are arranged so the sensor can output to a specified PC or other devices.
Torque testers can organize the output from the sensor (torque meter) section over time. For example, a graph that displays torque on the vertical axis and time on the horizontal axis can be created.
It is also possible to organize the hysteresis of the hydraulic torque. For example, a graph can be created displaying pressure on the vertical axis and torque at the output on the horizontal axis. The difference between multiple hydraulic operations and the theoretical value can be displayed to determine whether hydraulic pressure needs to be inspected or calibrated.
Torque testers dedicated to torque wrenches are more specialized, and some are automated from measurement to calibration by simply placing the torque wrench in the designated mounting area.
Torque testers dedicated to torque wrenches need to confirm the vendor’s torque tester specifications when the agent performs calibration. There are limitations depending on the equipment and operating systems, such as the corresponding torque measurement range and accuracy and the number of torque points to be measured.