Close-up of the Voith SafeSet torque limiting coupling

Torque limiting couplings

Protect your driveline with SafeSet intelligence

    Rotating equipment drivelines are long-term investments worth protecting. Every minute of unplanned downtime caused by overload is a loss in production. With outstanding safety and reliability, Voith’s torque limiting couplings protect all components in the driveline, resulting in smooth operation, less wear and tear, and maximum performance of your equipment.

    Offering you outstanding precision and reliability through:

     

    Features

    		 Benefits

    Accurate release torque

    Increases productivity

    Compact and customized design

    Easy driveline integration

    Set torque that remains constant over time

    No unwanted releases, which reduces repair time

    Instant torque limitation in an overload situation

    Protects the driveline and avoids expensive standstill costs

     

    Get in touch with our experts

    Explore the next generation torque limiter

      SafeSet EZi
      Voith SafeSet EZi | Torque limiting coupling

      Simplifying and adding value to the growing need for faster delivery times, more accessible and safer handling during operation, and simple maintenance of torque limiting couplings is now a reality with our newest generation of SafeSet EZi couplings.

      Find out more
      SafeSet couplings work absolutely, reliably and without compromise.
      Hans Devell, Senior Technician for SSAB
      Find out more

      Our SafeSet product portfolio

        Voith's comprehensive product portfolio covers a range of torque limiting couplings with capacities from 1 to 20,000 kNm.

        Tailor-made designs provide additional advantages to the production process. SafeSet, SlipSet, SmartSet, and AutoSet ensure the safe operation of the driveline by releasing or slipping at an exact torque level. In the event of a catastrophic, high-torque occurrence, the torque limiting couplings interrupt the power flow in the driveline, which minimizes damage and production downtime. The Voith Dtect System alerts you in real-time about torque overload situations, helping further protect your investment.

        SafeSet – coupling with instant release

        SafeSet protects your driveline and maximizes production.
        Protect your driveline and maximize production with a SafeSet. The principle is simple and based on friction and adaptability principles. No material fatigue or wear ensures constant torque protection during operation. The torque limiting coupling includes a twin-walled hollow sleeve. Friction is generated upon expansion by pressurized hydraulic oil. The integrated shear tube holds this pressure to ensure a constant but easy adaptable torque transmission. In an overload situation, the SafeSet slips, and the shear tube shears off. Oil pressure drops, and the frictional surfaces separate. Consequently, the SafeSet rotates on the bearings without transmitting any torque.

        Features and benefits

        Design features
        • Torque range between 1 and 20,000 kNm, depending on model and use
        • Adjustable torque settings to suit all applications
        • Immediate release at a pre-set torque in the event of a torque overload
           
        Benefits
        • Maximum driveline protection — damaging inertia disengage at once
        • Set torque remains constant over time
        • Quick resetting for maximum uptime
        • Custom-made to suit individual requirements

        • Swedish steel producer SSAB pushes the limits with Voith SafeSet couplings

          Swedish steel producer SSAB pushes the limits with Voith SafeSet couplings

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          English German
        • Torque limiting for increased performance in crushing SafeSet torque limiting couplings for belt drives and direct drives

          Torque limiting for increased performance in crushing SafeSet torque limiting couplings for belt drives and direct drives

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          English

        SlipSet – coupling with peak shaving

        Voith SlipSet | Torque limiting coupling with controlled slip
        SlipSet is designed with the ability to slip instantly instead of releasing in the event of a torque overload.
        Ensuring continuous production, the SlipSet is designed to slip in the event of an overload situation. Acting as a shock absorber in drivelines with frequent torque peaks, this torque limiting coupling safely prevents time-consuming repair work and shutdowns. This coupling is compact in design and can be installed in areas with limited space; this ensures optimal positioning in the driveline. The SlipSet torque limiting coupling is ideally suited for applications requiring short peak loads (smaller than slip angle 120°).

         

        In a temporary torque overload, the coupling slips to limit the torque peaks and enables continuous production. If the blockage persists, the SlipSet coupling slips until the drive can be stopped for the obstruction to be cleared. To monitor the maximum slip angle possible, we recommend using the Dtect torque system.m.

        Features and benefits

        Design features
        • Ideally suited for applications requiring short peak loads
        • Adjustable torque settings from 50 to 100% of maximum torque setting
        • Slip at a pre-set torque
        • Immediate slip in the event of a torque overload
        Benefits
        • Ensures continuous production due to torque limitation without disengagement
        • Minimized installation cost thanks to a compact design
        • Less maintenance cost due to instant overload protection that protects your driveline from premature wear

        • Voith SlipSet | Controlled slip

          Voith SlipSet | Controlled slip

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        SmartSet – coupling with peak ride through and controlled release

        Torque limiting couplings from Voith prevent machine damage in high-value rotating equipment. They work like a mechanical fuse in the driveline by protecting the system from costly breakdowns.
        SmartSet is a torque limiting coupling with controlled slip based on the same technology as SafeSet, with the additional ability to also slip without releasing, to reduce the short duration and dynamic torque peaks without interrupting production. The SmartSet principle is simple: controlled slip torque for process improvement. The SmartSet coupling can safely slip up to 120° without releasing to limit short peaks. If the torque peak is of long duration in an overload situation, the SmartSet coupling will fully release and save the driveline from severe damage.

        Features and benefits

        Design features
        • Ability to slip up to 120° during a torque peak
        • Adjustable torque settings from 50 to 100% of maximum torque setting
        • Mechanical slip and release mechanism
           
        Benefits
        • Ability to slip without release to reduce the short duration and dynamic peak torques
        • Precisely adjustable slip and release torque
        • Maximum driveline protection
        • Full release during blockage

        • Your safeguard against power blackout | SmartSet torque limiting coupling

          Your safeguard against power blackout | SmartSet torque limiting coupling

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        AutoSet – coupling with controlled slip and automatic reset

        Voith AutoSet | Torque coupling with controlled slip and automatic reset
        AutoSet automatically resets the pre-set torque limit after a longer overload/complete blockage. 
        Controlling the slip and automatically resetting to improve performance and minimize production stoppages, this process-improving torque limiting coupling handles dynamic torque peaks of short duration safely and without releasing. The AutoSet reduces high torque peaks by slipping up to 180°. If the torque peak lasts long, the coupling will release entirely, limiting the torque.

        Features and benefits

        Design features
        • Ensures continuous production due to torque limitation without disengagement
        • Automatic resetting of slip angle
        • Complete disengagement during a long peak event
        • Automatically resets itself to the pre-set torque limit after a longer overload/complete blockage
        Benefits
        • Improves production, as no resetting is needed for short peaks
        • Lower maintenance cost with no manual resetting needed
        • Less investment cost, as no additional equipment is needed
        • Continuous operation, even during an overload, improves production uptime

        • AutoSet application | Levelers in hot strip mill

          AutoSet application | Levelers in hot strip mill

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          English

        Dtect – coupling monitoring system

        Increasing productivity and reducing maintenance with an integrated real-time driveline monitoring system is now a reality. Dtect is a digital intelligence system that supports better decision-making to predict potential problems, protect the driveline and prevent costly downtime. This system can be added to your torque limiting couplings to acquire the coupling’s status and in turn evaluate production whilst reducing maintenance costs.

        Features and benefits

        Design features
        • Modbus TCP/IP standard
        • Slip angle measurement
        • Relay outputs
        • Speed measurement
        • Service indicator
        • Ethernet connection
        Optional features (on request)
        • GSM module
        • Multi monitoring
        • Integrated HMI touch panel
        Benefits
         
        • Real-time monitoring of the driveline status
        • Possibility to optimize driveline performance
        • Integration with existing process monitoring systems enables platform-independent supervision of data
        • Prevent costly downtime with proactive maintenance of a coupling
        • Visual and audio warning indicators can be activated for making decisions and actions
        • Increase uptime of the driveline

         

         

        • Dtect | Adding digital intelligence

          Dtect | Adding digital intelligence

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        Helping you find your ideal torque limiting solution

          Protecting and enhancing your rotating equipment, our torque limiting couplings work like a mechanical fuse releasing or slipping at a precise torque level.

          Your contact details in order to receive more information

          Please enter your contact details in order to receive more information regarding the best torque limiting coupling for your application. We will be in contact with you shortly.

          Mandatory fields

          Your drivetrain information (optional)

          In order to assist you with the best solution, please include as much information as possible in the form below:

          Type of application area

          Maximum allowed torque

          kNm

          Nominal torque
          (at torque limiter position)

          kNm

          Required release torque range

          kNm

          Motor power

          kW

          Rotational speed
          (at torque limiter position)

          rpm

          Flexible coupling type used

          Total available installation length

          mm

          Torque limiter interface


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          EcoPressure

            Biodegradable pressure fluid

            When technology touches nature, environmental protection is our top priority.

            The ideal pressure fluid for all torque limited couplings, EcoPressure can be used in all applications, and especially for ecologically sensitive areas like forestry, agriculture, waterways, and mining environments. This also includes all equipment and facilities operated in or near water treatment, water protection or surface water areas.

            EcoPressure at a glance

            Sustainable

            • Biodegradable
            • Environmentally sensitive
            • Based on saturated synthetic esters and an environmentally friendly combination of additives
            • EU ecolabel certification (Registration No. DE/027/079)

            High performance

            • Resistant to oxidation
            • Excellent corrosion and EP protection
            • Outstanding low temperature behavior
            • Zinc-free
            • Compliant with VDMA 24568 and ISO 15380
            • An equivalent to conventional hydraulic fluids however this oil may even be superior in efficiency and operating behavior under certain conditions

            Wide range of applications

              SafeSet | Mining applications

              Mining

              Protect machinery from damage by releasing or slipping at a precise set torque. Minimize operating downtime and increases production uptime. Raw materials applications include:

               

              • Crushers and grinders
              • Conveyors and excavators
              • Mixers and extruders
              SafeSet | Steel and recycling applications

              Steel and recycling

              Protect machinery from damage by releasing or slipping at a precise set torque. Metals applications include:

               

              • Levelers
              • Rolling and Steckel mills
              • Plate and strip mills
              • Shredders
              SafeSet | Energy applications

              Energy

              Limit torsional vibrations, protect the driveline, and provide a reliable release torque. Energy applications include:

               

              • Gas turbines
              • Compressors
              • Wind power
              SafeSet | Marine applications

              Marine technology

              Protect drivelines and machinery from overload and ensure a smooth, reliable propulsion. Marine applications include:

               

              • Propulsion
              • Thrusters
              • Water jets
              • Ship loaders
              • Dredgers
              SafeSet | Rail vehicle applications

              Rail vehicles and test rigs

              Prevent excessive torque and protect passengers in the event of failure. Mobility applications include:

               

              • High-speed trains
              • Test rigs
              SafeSet | Tunnel boring application

              Construction

              Protect the driveline under excessive torque levels. Construction industry applications include:

               

              • Tunnel boring machines

              Voith Service – how can we help you?

                Why use Voith Service?
                Why use Voith Service?

                • Everything from a single source: development, design, production – and service!
                • Decades of product experience as an original equipment manufacturer and service provider
                • Fast and smooth cooperation and best service thanks to a worldwide network of service locations
                • Long-term partnership and planning security are guaranteed due to longstanding corporate stability

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                  Publications

                    • Maximize production with intelligent driveline protection | Torque limiting couplings

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                      English Japanese

                    • Improve mining safety and control | Torque limiting couplings

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                      English

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