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Torque limiters - The airbag for your machine

Torque limiters: The airbag for your machine

Torque limiters – also known as overload clutches or torque limiting clutches – disconnect the input and output in the case of overload so that torques or forces in the drive line can only increase up to the intended value.

They reliably protect machines and systems from expensive overload damage. Torque limiters from mayr® transmit torque essentially backlash-free.

We provide load-holding and load-separating torque limiters for numerous applications and fields, such as production plants, test benches, heavy-duty applications such as rolling mills or breakers, tunnel boring machines, or the food industry.

  • Reliably stop or limit torques and forces
  • Load on machinery and equipment only up to the permitted value
  • Reduced repair costs
  • Low downtime and therefore high plant availability
  • Reduction of constructional safety factor
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ROBA®-slip hub : Load-holding, frictionally-locking torque limiting clutch (slip clutch) | © mayr® Antriebstechnik configurable
ROBA® slip hub
Torque limiter
  • Load holding
  • Wide range of variants
  • High switch-off and repeat accuracy
To the Product
EAS-compact® - series: Torque limiters configurable
EAS-compact® - series
Torque limiters
  • Backlash-free
  • High performance density
  • Application-optimised designs
To the products
EAS®-HTL : The housed clutch with standardized connection dimensions | © mayr® Antriebstechnik
EAS® HTL
Torque limiter
  • The plug-and-play solution for IEC / NEMA motors and gearboxes
  • Torque limiter in a sealed housing
  • Available as ratchetting, synchronous and completely disengaging variants
To the Product
EAS®-Sp/Sm/Zr : The residual torque-free load-separating torque limiters with switching function | © mayr® Antriebstechnik
EAS® Sp/Sm/Zr
Torque limiter
  • Can be switched and controlled pneumaticly or electrically
  • Limit torque can be set during operation
To the Product
EAS®-HT : Reliable High Torque Safety Clutches for Heavy Duty Applications | © mayr® Antriebstechnik
EAS® HT
Torque limiter
  • The torque limiter for high torques
  • Easy reconnection
  • Complete disconnection on overload
To the Product
EAS®-reverse : Perfect overload protection for drives which are hard to access | © mayr® Antriebstechnik
EAS® reverse
Torque limiter
  • The torque limiter for inaccessible drives
  • Reconnection by reversion of rotation
  • Complete disconnection on overload
To the Product
ROBA®-contitorque : The consistent-torque continuous slip clutch with magnetic hysteresis principle | © mayr® Antriebstechnik
ROBA® contitorque
Torque limiter
  • Load holding
  • Wear-free hysteresis clutch
  • Constant torque
To the Product
More Torque limiters

Find the right torque and force limiter

Our intuitive search function allows you to find the right torque and force limiter in a matter of seconds. Simply answer a few questions to receive personalized product recommendations.

  • Fast and precise results
  • Customizable to your individual requirements
  • Intuitive navigation through targeted questions
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More Torque limiters

EAS®-HSE : High-speed torque limiters for high-speed applications | © mayr® Antriebstechnik
EAS® HSE
Torque limiter
  • The torque limiter for test stands and high-speed applications
  • High balance quality
  • Complete disconnection on overload
To the Product
EAS®-dutytorque : The perfect torque limiting clutch for extruders | © mayr® Antriebstechnik
EAS® dutytorque
Torque limiter
  • The torque limiter for extruder applications
  • Radial installation without moving the motor
  • Complete disconnection on overload
To the Product
The EAS®-smartic® is a positive-locking, mechanical torque limiter based on the ball-detent principle. | © mayr® Antriebstechnik
EAS® smartic®
Torque limiter
  • Space optimized design
  • Torque setting readable on the housing
  • Backlash-free
To the Product
ROBA®-capping head : Verschließköpfe für Abfüllanlagen | © mayr® Antriebstechnik
ROBA® capping head
Torque limiter
  • Special version of ROBA-contitorque for capping bottles
To the Product

Monitoring Components

For safe monitoring and reliable control

Monitoring components for torque limiters are mechanical or contactless limit switches. They securely and reliably detect the disengagement movements and end positions of EAS® torque limiters and act as command signals for electronic and mechanical processes. With these components, torque limiters are always under control, ensuring safe and reliable operation with minimal downtime. 

  • Reliably detect clutch movements and end positions 
  • Control mechanical and electrical processes  
  • Always retaining an overview of the torque limiter 
All Monitoring Components

Overview of torque limiters

We offer load-holding and load-separating torque limiters. Load-holding torque limiters restrict torque to a preset value but do not stop torque transmission. On the other hand, load-separating torque limiters stop torque transmission and re-engage after the overload has been eliminated. This is done differently depending on the product and requirements.

Both variants reliably protect the drive from damage caused by overload.

Load-separating torque limiters

Load-separating torque limiters disconnect the input and output in the event of overload or collision. In other words, they stop the torque or force transmission. They re-engage after the overload has been eliminated. This is done differently depending on the product and application.

  • Input and output are immediately disconnected in the event of overload
  • Torque or force transmissions are directly stopped
  • Re-engagement occurs in different ways depending on requirements

Sub-varients of load-separating torque limiters
 

Ratchetting clutches

Disengages in the event of overload and automatically re-engages after a defined number of revolutions. The angle by which the clutch continues to turn when disengaged can be selected.

Synchronous clutches

Disengages in the event of overload and automatically re-engages after a complete revolution, i.e. exactly 360°.

Disengaging / overload clutches

Input and output are disconnected in the event of overload, torque transmission remains interrupted, the drive can run freely. Re-engagement does not occur automatically, but rather manually or via an additional mechanism.

Load-holding torque limiters

Load-holding torque limiters restrict torque to a preset value but do not stop torque transmission. This ensures that loads continue to be held and do not decrease uncontrollably.

  • Torque is reliably limited
  • Torque transmission remains constant, preventing loads from dropping, etc.
  • No engagement required

Sub-variants of load-holding torque limiters
 

Slip clutches

Slip clutches transmit the torque in a frictional locking manner from the drive to the output. Once the preset torque has been exceeded, the transmission element, for example an elastomeric element, slips and continues to transmit only the maximum desired torque.

Hysteresis clutches

Unlike friction-locking clutches, the torque is transmitted by using magnetic forces and without contact. When the preset maximum torque has been reached, the clutch slips and limits the torque transmission to the desired value.

Typical application fields for torque limiters

Torque limiters from mayr® power transmission are used in numerous applications and fields where secure and reliable torque transmission is required.

Industry sectors

Application scenarios

  • Securing robot arms and cobots
  • Protecting machine tools from damage caused by collision
  • Protecting extruders from overload, for example caused by blockages
  • Protecting against expensive overload damage in tunnel boring machines
  • Protecting sensitive test bench technology and protecting expensive units under test
  • Reliable sealing of drink bottles

 

Your benefits with torque limiters from mayr® power transmission

Overload, blockages, or collisions result in considerable damage to the drive line if there is no effective protection. Torque limiters act as a type of airbag for the machine: if the torque rises above a defined limit, they immediately disconnect the input and output or limit the torque transmission to the desired maximum value. All components remain within the elastic deformation range and the drive line is protected from overload damage. The advantage: Reduced downtime, fewer repairs, and therefore lower overall costs.

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FAQ - frequently asked questions

When selecting safety-critical components, it is always important to use experienced and reliable suppliers. Certifications such as DIN EN ISO 9001:2015 are an indication of verified quality.

A wide range of products and numerous applications in various fields also indicate that the supplier has solution expertise. An online selection guide or product configurator make selection simple.

When selecting torque limiters, it is also vital to have direct contact with experts who can help clear up specific technical questions.

mayr® power transmission offers load-holding and load-separating torque limiters.

Load-holding clutches, such as the ROBA® slip hub, limit the torque to a preset value but do not stop torque transmission.

On the other hand, load-separating torque limiters, like those of the EAS compact® series, stop torque transmission and re-engage after the overload has been eliminated. This is done differently depending on the product and requirements.

We offer torque limiters in different sizes and torque ranges, from small clutches for sealing systems to large clutches for heavy-duty applications.

Our torque limiters are used in a large number of fields and applications, from robotics to mining, from tunnel construction to medical technology.

Torque limiters from mayr® power transmission can be used wherever torques are transmitted and safe, reliable limitation of the transmitted torque is required or advisable.

Torque limiters – also known as overload clutches or torque limiting clutches – are machine components that safely and reliably limit the torque in the drive line transmitted from the input to the output.

A distinction can be made between load-holding and load-separating clutches. The load-holding variants limit the torque to a predetermined value but do not stop transmission.

Conversely, the load-separating clutches stop torque transmission mechanically and only re-engage after the overload has been eliminated. This is done differently depending on the product and application.

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