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Helixa Precision Torque Test Systems

Helixa-i testing Luer locks     Helixa-xt testing pen injector

The Helixa is designed for precision design applications, where torque forces may be very small and where accuracy is paramount. Its counterbalancing mechanism allows the removal of axial force, whilst also enabling the application of precise top-load or tensile force when required. The drive spindle can be user-aligned for precise concentricity with the intelligent torque cell. Our experienced engineers can design and manufacture custom fixtures for your specific sample profiles.


  • Controlled by Mecmesin’s powerful Emperor™ software
  • Balanced to remove or apply axial compressive or tensile force
  • Precise drive-to-loadcell alignment for extreme low torque testing
  • Measurement from a few mN.m up to 6 N.m


The Helixa accepts interchangeable intelligent torque cells for measurement from just a few mN.m up to 6 N.m, with a resolution of 1:6,500 and an accuracy of ±0.5% of full scale.

Available also as a touch-screen model, the Helixa-xt, with all the same features but the convenience of a self-contained unit.

Emperor™ Software

Emperor™ software has been specifically designed to work with Mecmesin test systems for ultimate test performance. It combines ease of use with powerful programming tools, making it equally suitable for simple, routine analysis in the QC laboratory and sophisticated test routines in the design department. Emperor™ controls the entire test sequence, acquires the data measurement, performs calculations, and returns and reports results.


  • Helixa v-grip table

    Mini v-grip for regular cyclindrical test specimens

  • Helixa pin chuck

    Pin chuck fixture for Helixa

  • Helixa mounting table

    Upper mounting table for Helixa

  • Helixa precision torque spring fixture

    Custom fixtures for torsion springs

  • Helixa precision torque watch fixture

    Custom fixtures for finely engineered components

  • Helixa precision torque medical devices fixture

    Custom fixtures for medical devices

  • Helixa precision torque luer lock fixture

    Custom fixtures for testing Luer fittings

Helixa precision torque tester: Key Features, Specification, Fixtures and Programming

Key Features

  • Precision adjustable alignment
  • Measurement down to just a few mN.m
  • Interchangeable torque cells
  • Remove or apply static axial force
  • Fully programmable
  • Available also as a touch-screen model

Technical Specification

  • Intelligent torque cells rated at 100 mN.m, 200 mN.m, 300 mN.m, 1 N.m, 1.5 N.m, 3 N.m, and 6 N.m (14 ozf.in, 28 ozf.in, 42 ozf.in, 8.9 lbf.in, 13 lbf.in, 26.5 lbf.in, 53 lbf.in)
  • Torque cell resolution: better than 0.01% of full scale
  • Axial alignment: total runout (without fixtures), better than ±0.25 mm
  • Speed from 0.1 to 30 rpm with resolution of ±0.1 rpm
  • Sampling rates of 1 kHz, 500 Hz, 100 Hz, 50 Hz and 10 Hz
  • Maximum displacement from tared position: 2500 revs
  • Displacement accuracy: 0.1°
  • Displayed resolution: 0.2°
  • Throat depth (max sample radius): 111 mm, or 127 mm with bellows removed
  • Headroom (without fixtures): 350 mm
  • Dimensions: (with external weight hanger), Helixa-i: W 290 mm × H 758 mm × D 491 mm (Helixa-xt: W 587 mm)
  • Weight: 28 kg (Helixa-i); 32 kg (Helixa-xt)

Grips and Fixtures

  • A range of standard fixtures is available
  • For specific precision applications, experienced Mecmesin engineers can work with you to advise, adapt, or design and manufacture custom fixtures.
Helixa custom precision fixtures

Emperor™ Control and Analysis Software

  • Helixa-i is controlled by Mecmesin’s powerful Emperor™ software, with full sophisticated programming and results calculation, and user-profiled reporting and exporting facilities
  • Helixa-xt is controlled by Emperor-xt, designed especially for intuitive touch-screen use requiring minimal training for repetitive use. It also has easy-to-use results calculation, reporting and exporting, and can run full Emperor programs created on PC.
  • Live graphical display by displacement angle, load and time
  • Create your own easy-access library of test programs
  • Instant results per test, with pass/fail indication
  • User login controls levels of access and use