Torque Limiters

Ball/Roller torque limiters with rigid coupling 60 – 5,200 Nm
Compact ball torque limiters with chain coupling 7.5 – 1,450 Nm
Friction torque limiters with chain coupling 1 – 23,000 Nm
Backlash-free torque limiters with elastomer coupling 17 – 1,050 Nm
Ball/Roller torque limiters with elastomer coupling 60 – 9,600 Nm
Friction torque limiters with elastomer coupling 12.5 – 9,600 Nm
Backlash-free torque limiters 2 – 750 Nm
Ball/Roller torque limiters 2.5 – 12,000 Nm

Torque Limiters: Efficient and Reliable Mechanical Protection

Torque limiters, also known as safety couplings, are essential components for protecting mechanical parts along the power transmission chain. These mechanical devices respond quickly in the event of overloads or anomalies, safeguarding the motor and transmission systems, such as gears and timing or V-belt drives.

When to Use Torque Limiters

Installing mechanical torque limiters is recommended in various situations:

  • Overloads at start-up

  • Accidental load peaks

  • Rotation reversals

Thanks to their immediate action, torque limiters protect systems from costly damage and ensure safe and reliable transmission.

Advantages of Torque Limiters

Compared to electronic safety devices, mechanical torque limiters offer numerous advantages:

  • Faster and more precise response

  • Superior reliability even under heavy-duty conditions

  • Versatile configuration for different industrial applications

  • Easy to install and adjust

  • Optimal performance with high speeds and significant inertia

Electronic devices, in fact, operate upstream of the transmission and may present delays in response times, complex configuration, and a higher risk of errors.

How to Choose the Right Torque Limiter

The choice of torque limiter is based on determining the disengagement torque, a value higher than the torque required for the normal operation of the machine. This configuration ensures complete protection, preventing failures and reducing machine downtime.

Special Applications of Torque Limiters

For specific sectors, such as the food industry, we offer torque limiters in stainless steel or with suitable coatings, designed to ensure compliance with hygiene standards and resistance to harsh conditions.

Complete Protection and Improved Safety

Mechanical torque limiters not only increase the safety level of machines but also reduce the risk of failures and malfunctions. This results in greater operational reliability, reduced downtime and optimal protection for all industrial applications.

Applications of Torque Limiters

Torque limiters are essential devices for protecting mechanical transmission systems, ensuring safety and reliability in many industrial sectors. Here are some of the main applications:

Machine tools

Protection against overloads during milling, drilling and cutting operations.

Industrial automation plants

Prevention of damage caused by programming errors or accidental blockages.

Packaging machines

Safety during the movement of packaging lines and conveying systems.

Printing and graphic machines

Safeguarding equipment from excessive loads or unexpected failures.

Textile sector

Protection of looms and yarn processing machines from load peaks.

Sheet metal processing machines

Protection of presses, bending machines and shears from sudden overloads.

Woodworking plants

Safety in machines such as circular saws, planers and milling machines.

Test benches

Ensuring precision and protection during testing and inspections.

Conveying systems

Protection of transmissions in conveyor belts and material handling systems.

Lifting plants

Safety in cranes, hoists and forklifts.

Pumps and fans

Prevention of damage in case of blockages or overloads.

Mining industry

Protection of extraction and processing plants from excessive stress.

Food sector

Applications in compliance with hygiene standards, with materials suitable for food contact.

Robotic systems

Safeguarding critical components from failures or unexpected movements.

Mauro Piazzalunga

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