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Torsional vibration

Products and applications Download
Test load
  • 1 kN - 250 kN
  • 10 - 2,500 Nm
Type of test
  • Torsional vibration
  • ASTM F1717
  • ASTM F2706
  • ISO 12189
  • ISO 7206-6

What is torsional vibration?

Torsional vibrations are vibrations that can occur in a component or a system when it is subjected to torsion. They occur when part of a system is twisted to create a torsional load that causes the system to spring back or the torsional load to be reapplied.

In many cases, the torsional load is also superimposed with an axial load (static or dynamic). This superimposed dynamic loading is often used in the simulation of real-life conditions that affect components, for example when testing spinal implants.

Axial torsion testing machines from ZwickRoell

Our axial torsion testing machines cover a wide range of torsion tests and can be adapted to your specific applications.

  • Electrodynamic torsion testing machine LTM Torsion
    Electrodynamic torsion testing machine with a drive based on linear-motor-technology. It is equipped with a 10 Nm, 20 Nm, 30 Nm, 50 Nm or 100 Nm torsion drive for test loads from 1 kN to 10 kN.
  • Servohydraulic torsion testing machine HCT
    The servohydraulic torsion testing machine (table-top model) is equipped with a 250 Nm torsion drive. It can be used for the determination of the torsional vibration for test loads up to 25 kN.
  • Servohydraulic torsion testing machine HBT
    The servohydraulic torsion testing machine (floor-standing model) is equipped with a 2,500 Nm torsion drive. It can be used for the determination of the torsional vibration for test loads up to 250 kN.

Advantages and features

Electrodynamic axial torsion testing machine
Servohydraulic axial torsion testing machine
Electrodynamic axial torsion testing machine LTM3 Torsion

Electrodynamic axial torsion testing machine

  • High dynamic performance due to low moving mass.
  • The wide speed range allows you to perform both dynamic fatigue and slow static tests.
  • Maintenance- and adjustment-free brake for mechanical piston clamping.
  • No additional pneumatic, coolant, oil etc. supply feeds required.
  • Motor-driven crosshead adjustment for convenient operation.
  • Safe setup mode according to EN 60204-1 via speed reduction to 10 mm/s and 24°/s.
  • Precise and low-wear piston rod bearing.
  • Simple manual crosshead locking via hand lever with electrical monitoring.
  • Long piston-stroke of 60 mm allows for a wide variety of tests.
Servohydraulic axial torsion testing machines HCT and HBT

Servohydraulic axial torsion testing machine

  • Hydraulic adjustment and manual clamping of the upper crosshead
  • Installation of the testing actuator in the upper crosshead
  • Torsionally stiff, backlash-free length-compensating coupling
  • Hydrostatically mounted seal-free linear actuator
  • Hard-chromed T-slot platform and columns for tests in corrosive media
  • Safety housing for compliance with CE Machinery Directive, based on application

testXpert R – our software for dynamic testing

In the testXpert R software, all test programs have a workflow-based structure and are aligned with real workflow processes in the lab. This setup guides the user through the test with logical and traceable steps. In addition, both simple and complex test sequences can be intuitively created and executed using the graphical block editor of the dual-axis sequencer testing software.

Learn more about the testXpert R testing software

Common standards for tests with torsional vibrations

  • ASTM F1717 - Standard Test Methods for Spinal Implant Constructs in a Vertebrectomy Model
    When tested according to the ASTM F1717 standard, spinal implants are subjected to a multiaxial fatigue test in addition to static tests.
  • ASTM F2706 - Standard Test Methods for Occipital-Cervical and Occipital-Cervical-Thoracic Spinal Implant Constructs in a Vertebrectomy Model
    The ASTM F2706 standard describes static test methods as well as fatigue tests and the superimposed torsion test on occipital-cervical and occipital-cervical-thoracic spinal implants.
  • ISO 12189 - Mechanical testing of implantable spinal devices—Fatigue test method for spinal implant assemblies using an anterior support
    The ISO 12189 standard describes fatigue testing of flexible spinal implant assemblies and biomechanical fatigue testing of all types of spinal implant assemblies.
  • ISO 7206-6 - Implants for surgery—Partial and total hip joint prostheses—Part 6: Endurance properties testing and performance requirements of neck region of stemmed femoral components
    The ISO 7206-6 standard is used for multiaxial fatigue tests on the neck region of hip joint prostheses. This test simulates a well ingrown femoral stem.

Technical overview

Electrodynamic testing machine for dynamic torsional loadingServohydraulic testing machine for dynamic torsional loadingServohydraulic testing machine for dynamic torsional loading
ModelFloor-standing testing machineTable-top testing machineFloor-standing testing machine
Max. axial force1 kN
2 kN
3 kN
5 kN
10 kN
10 kN
25 kN
50 kN
100 kN
250 kN
Torsion drive, dynamic10 Nm
20 Nm
30 Nm
50 Nm
100 Nm
100 Nm
250 Nm
500 Nm
1,000 Nm
2,500 Nm
Angle of rotationContinuous rotation±50°±50°
Torsion drive can be retrofitted--
Typical applications
  • Spinal implant
  • Bone screws
  • Hip joint
  • Production testing actuators
  • Rubber metal connections
  • Drive components
  • Camshafts
  • Rubber metal connections
  • Coupling components

Learn more about our products for dynamic torsional loading!

Our product experts will be happy to advise you.

Contact us


Name Type Size Download
  • Product Information: LTM 1-3 with Torsion Drive PDF 444 KB
  • Product Information: LTM 5-10 with Torsion Drive PDF 714 KB
  • Product Information: Servohydraulic Testing Machine HCT (Torsion) PDF 308 KB
  • Product Brochure: Dynamic and Fatigue Testing Systems PDF 5 MB

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