Torque Transducers

Assessment of the effect of rotating forces on mechanical systems is one of the central measuring tasks during technical developments in diverse industries and disciplines. Based on our extensive experience with strain gauge force measurement we have developed high-precision torque transducers for non-rotating torque measurement that are specially optimized for high-end metrological and industrial test bench applications. Our torque transfer standards and torque transfer wrenches are recommended for comparison of National Metrological Institutes (NMI) or for traceability. GTM torque transfer standards are the top choice for factory standards, reference standards, and calibration and traceability of accredited industrial calibration labs to the national standard.

Torque Transducer Series M

For static and dynamic torques
Nominal torque range: 2 N·m to 10 kN·m
Accuracy class: 0.05
Fatigue endurance limit: >100 million load cycles
Non-rotating version

Torque Transducer Series MF

For static and dynamic torques
Nominal torque range: 100 N·m to 150 kN·m
Accuracy class: 0.05
Fatigue endurance limit: >100 million load cycles
Non-rotating version

Torque Transfer Standard Series Dm-TN

For calibration of measuring instruments
Pure static torque measurement
GTM accuracy class VN: 40 - 100%
DIN 51309 accuracy class 0.05: 20 - 100%
Nominal torque range: 1 N m to 20 kN m

Torque Transfer Wrench Series Dm-TS

Measuring of static torques with transverse force
Precise calibration of torque calibration equipment
DKD-R-3-7 classes: 0.1 and 0.2
Nominal torque range: 2 N·m to 3 kN·m

Why You Should Choose GTM Torque Transducers and Transfer Standards – Your Customer Benefits!

We support you in finding a solution for your torque measurement task with a huge diversity of functions that are custom tailored to the requirements of your torque sensor application. Configure your custom torque transducer on the basis of GTM’s diverse options. We provide the support to help you create your solution! Our experts will assist you first-hand with planning, engineering, installation and commissioning – always with the goal of providing a suitable and efficient torque transducer solution for your torque measurement application, with no compromises in quality, performance and precision.

Designed for Precision
High-Precision and Reliable Measurements

In addition to outstanding precision and minimal margins of error throughout the entire measuring range, GTM torque transducers also exhibit extremely low sensitivity to parasitic influences. This means that transverse forces, bending moments and temperature fluctuations do not have a chance – optimal conditions for the most precise torque measurements conceivable. GTM uses high-quality connecting cables for all torque transducers and measuring leads – exclusively 6-conductor versions – to ensure precise transmission of your precise torque measurements.

Designed For a Long Life
Maximum Investment Security

GTM torque transducers give you excellent investment security, because they are designed for a long life. That is why the robust and durable GTM force transducers can achieve a fatigue endurance limit of more than 100 million load cycles (depending on the series ≤80% or ≤100% M_nom). Depending on the series, our torque transducers can also withstand torques up to 300 % of the rated torque without breaking, and up to 150 % of the rated torque without effects on the measurement and zero point. GTM torque transducers are manufactured using very high-quality materials and production processes.

Designed for Metrology & Traceability
Torque Transfer Standards and Reference Transducers

Best-in-class torque transfer standards from GTM are a worldwide synonym for the metrological traceability of moments. That is why they have become standard at many National Metrological Institutes(NMI) – in use for more than 20 years, always precise and continuously under further development. The Dm-TN series even exceeds the DIN 51309 standard many times over and therefore measures at the physical limit. To supplement the torque transfer standards, GTM uses only accessories of the highest quality. This applies both to strain gauge measuring amplifiers and double-shielded measuring cables, as well as standard-compliant mounting components.

Designed for Mechanical Integration
Very Easy Mounting and Optimal Adaptation

GTM torque transducers are designed for easy mounting and optimal adaptation to allow integration in existing and new constructions. We offer numerous very high-quality mechanical adaptations for the different torque transducers.

Your Best-In-Class Partner
Development and Production in Germany and Europe

All GTM development processes are carried out in Germany. The same applies to customizing and OEM. All of our torque transducers and torque transfer standards are produced in Germany and Europe. That ensures that you always have a secure and reliable supply chain – developed and produced in Europe.

Interesting facts about GTM Torque Transducers

Torque transducer and torque sensor overview

Torque transducers are measuring devices used to measure the torque applied to a shaft or pivot point. The torque transducer or torque sensor consists of a material that exhibits deformations under load and a sensor that measures those deformations. When torque is applied to the torque transducer, the material is deformed. This deformation can occur either by bending or torsion of the shaft or pivot. The sensor measures this deformation and converts it into an electrical signal proportional to the applied torque. Torque sensors can measure in real time or store data that can be analyzed later. GTM specializes in high-precision torque transducers for non-rotating torque measurement.

There are several types of torque transducers or torque sensors that work in different ways. Some use strain gauges attached to the surface of the material to measure deformation. Others use magnetostrictive sensors that measure deformations through changes in the magnetic field. Torque transducers may also be referred to as torque cells. GTM offers strain gauge torque transducers, flange torque transducers, shaft torque transducers, and inline torque transducers. These torque transducers are available in various sizes and measurement ranges to meet the requirements of different applications.

Measurement accuracy: Torque transducers offer high measurement accuracy to perform precise measurements of torque in a wide range of applications. This is especially important for applications where torque plays a critical role, such as in the automotive, aerospace, or machine building industries.
Reliability: Torque transducers are very reliable and offer a long service life to perform accurate measurements over a long period of time. This is important for applications where torque must be measured over long periods of time, such as in research and development or quality control.
Ease of installation: Torque transducers can be easily installed and do not require special tools or equipment to perform the measurements.
Flexibility: Torque transducers are available in different sizes and measuring ranges to meet the requirements of different applications. This makes it possible to measure torques in a wide range of applications, from small laboratory tests to large industrial applications.
Real-time monitoring: Torque sensors allow real-time monitoring of torque to provide instant feedback and make corrections as necessary. This is especially important for applications where torque needs to be monitored continuously, such as in production or in the operation of machinery and equipment.

They are used in many different applications, for example in the automotive industry, wind turbines, materials testing and research. They are an important part of many industrial applications and enable engineers to monitor and optimize the performance and safety of machinery and equipment.

Strain gauge stands for strain gauge and strain gauge based torque transducers are sensors that are used to measure the torque applied to a shaft or axle. These types of transducers use strain gauges mounted on a shaft or rotor. When torque is applied to the shaft, its shape changes slightly, which in turn affects the strain gauges. This change in strain is measured and converted into an electrical signal proportional to the torque. These transducers could be used in a variety of applications, including automotive, aerospace, power generation and other industries where accurate torque measurements are required.

Typically, strain gauge-based torque transducers offer the following benefits:

Accuracy: They provide precise measurements of torque, which is critical in many applications.
Reliability: the use of strain gauges allows torque values to be reliably recorded over an extended period of time.
Versatility: Strain gauge-based torque transducers can be adapted for a wide range of applications and measurement ranges.
Easy integration: They can be integrated into existing systems and often require only minimal modifications.

Non-rotating torque transducers, also known as reaction torque transducers or torque sensors, are special sensors designed to measure torque applied to an immobile or stationary body or structure. Unlike rotating torque transducers, which are mounted on rotating parts such as shafts or axles, non-rotating torque transducers are used in applications where the torque being measured does not necessarily involve rotational motion.

The specifics of non-rotating torque transducers can be as follows:

Mounting and Application: These transducers can be mounted on a fixed surface or structure to measure the torque applied to that structure. Examples could include test stands, assembly lines, industrial processes, or static components.
Measurement Accuracy: Non-rotating torque transducers are designed to provide accurate measurements of the torque applied to the stationary structure. Measurement accuracy is important to obtain accurate data for quality control, performance analysis and research purposes.
Versatile Applications: These transducers can be used in a variety of industries, including automotive, aerospace, construction, materials testing and many others.
Static calibration: Compared to rotating torque transducers, which can be calibrated during rotation, non-rotating torque transducers require static calibration because they are mounted on immovable structures.
Adaptability: Non-rotating torque transducers can be adapted to different requirements and environmental conditions to ensure they meet the specific needs of an application.

Choosing the appropriate torque transducer depends on several factors, including the requirements of your specific application.

Here are some important factors to consider:

Choose a torque sensor whose measurement range matches your requirements. Make sure the torque transducer is capable of measuring the highest torque load expected in your application.
Check the accuracy of the torque transducer and make sure it meets your requirements. In some applications, high accuracy is required, while in other applications, lower accuracy may be sufficient.
Make sure the torque transducer is suitable for the environment in which the measurements will be made. This includes factors such as temperature, humidity, pressure, and vibration.
Verify that the torque sensor can be easily and safely mounted in your application. There are several mounting options for torque transducers, such as flange mounting, shaft mounting, and voltage or pressure measurement.
Check which type of signal transmission the torque transducer uses, such as analog or digital. Make sure that the signal is output in a way that is suitable for your application.

With the greatest possible variety of equipment, which can be flexibly configured and perfectly matched to the needs of your torque sensor application, GTM supports you in solving your torque measurement tasks. The GTM experts help you directly and immediately with planning, design, installation and commissioning - always with the aim of delivering a suitable and efficient torque transducer solution without compromising on quality, performance and precision for your torque measurement task.

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Torque Transducer [N·m]

We are your partner for high precision non-rotating torque measurement. Based on our many years of experience in strain gauge-based force measurement, we have developed high-precision torque transducers for non-rotating torque measurement, which are especially optimized for demanding metrological and industrial test bench applications.

Accessories

Accessories from GTM fit perfectly and are durable and reliable in all measurement setups. Whether mechanical adapters or measuring cables and the corresponding plugs and sockets - all from one source.

Strain Gauge Amplifiers

To match the force transducers, torque transducers and multi-component transducers, GTM also offers the appropriate strain gauge measurement amplifiers for high-precision use for measurement data acquisition from 10 to 100 ppm.

We are Your Partner for High-Precision, Non-Rotating Torque Measurement.