Torque Calibration

Torque Calibration ; In industrial assembly lines, automotive services, and the aerospace industry, tightening nuts and bolts to the correct torque value is vital for structural integrity and safety. Rezonans Calibration provides accredited torque calibration services in compliance with TS EN ISO/IEC 17025 standards to maintain the precision of your torque hand tools and ensure repeatability.

Incorrect torque applications can lead to material fatigue, thread stripping, or the loosening of critical connections. Our expert team verifies the accuracy of your equipment using high-precision torque analyzers.

What is Torque Calibration and Why is it Important?

Torque calibration is the comparison of the rotational moment applied by a torque wrench or torque meter against a high-accuracy reference system (torque calibrator). Over time, spring systems experiencing mechanical fatigue or digital sensors may deviate from their set values.

The advantages of regular torque calibration include:

Product Safety: Ensures that critical connections (engines, wheels, steel constructions, etc.) are tightened with the correct force.
Material Protection: Prevents part breakage and deformations that may occur as a result of over-tightening.
Quality Standards: Meets the audit requirements of quality management systems such as IATF 16949 and ISO 9001.
Legal Assurance: Allows you to document your assembly quality with certified measurements in the event of potential occupational accidents or product failures.

Torque Equipment We Service

In our Rezonans Calibration laboratory, we provide services for the following device groups across a wide measurement range (in N.m):

Device Type	Field of Use
Mechanical Torque Wrenches	Automotive, Machine Assembly, Maintenance & Repair
Digital Torque Wrenches	Precision Electronics and Aerospace Assembly
Torque Screwdrivers	Small-scale Precision Connections
Torque Meters and Sensors	Quality Control Laboratories and Test Setups
Torque Angle Wrenches	Degree-based Tightening Processes

Technical Application Process of Rezonans Calibration

Torque calibration is not just about checking if a device works; it is about analyzing its performance curve. Our process includes the following steps:

Preliminary Inspection and Preparation: The mechanical components, ratchet mechanism, and locking system of the device are checked.
Loading Tests: Repeated measurements are taken at 20%, 60%, and 100% of the device’s capacity (or at points specified by relevant standards).
TS EN ISO 6789 Compliance: Calibration procedures are carried out based on this internationally valid standard for torque hand tools.
Certificate with Uncertainty Calculation: An official certificate is issued, including measurement deviations and expanded measurement uncertainty values.

Why Should You Choose Us?

Accredited Laboratory Competence: Traceable measurement results at international standards.
Modern Test Equipment: High-resolution and regularly calibrated torque analyzers.
Fast and Professional Service: Rapid workflow and technical support to prevent production disruptions.
On-Site Measurement Support: On-site service solutions for fixed torque test setups that are difficult to transport.

Frequently Asked Questions

How often should torque wrenches be calibrated?

General standards recommend that torque wrenches be calibrated every 12 months or every 5,000 uses (whichever comes first). For intensive use, this period should be reduced to 6 months.

How should a torque wrench be stored when not in use?

When not in use, mechanical (spring-type) torque wrenches must be stored at their lowest setting (not zero, but the lowest value on the scale) to prevent spring fatigue. This extends the calibration life.

My torque wrench fell on the floor; is the calibration compromised?

Torque wrenches are precision measuring instruments. A hard impact or fall can disrupt the settings in the internal mechanism. In such cases, it is recommended to perform a calibration check without waiting for the scheduled period.

Is the calibration certificate valid for all audits?

Yes, certificates prepared by Rezonans Calibration are ISO/IEC 17025 compliant and, thanks to NAC 17025 traceability, are valid in all domestic and international audits.

In which units can you perform calibration?

In our laboratory, we can calibrate all torque devices measuring in various units, primarily N.m (Newton-meter), as well as kgf.cm, lbf.ft, and lbf.in.

Torque Calibration

What is Torque Calibration and Why is it Important?

Torque Equipment We Service

Technical Application Process of Rezonans Calibration

Why Should You Choose Us?