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The DELTALAB EM400 torsion testing machine has been design to perform torsion testing on a broad range of specimens.


It has a maximum torque rating of 600 Nm and a speed of rotation that can be varied between 0.1 and 250 radians/min. The headstock is electro-mechanically operated.
The integrated analogue/digital interface and software are used for control, data acquisition and analysis using an IBM compatible PC.
Specimens and components of various sizes and materials can be used with the EM400. Tests may be carried out at fixed or variable speed, in continuous or alternate mode as a function of torque, speed or acceleration.


Teaching objectives

The torsion test machine allows a wide range of tests and experiments, including :
- Torsion in a solid rod, transmission components (cable, clutch etc)
- Fatigue testing in torsion up to 1 Hz

Technical specifications

The EM400 is based on a horizontally mounted box-type frame. It includes :
- An electro-mechanical headstock
- An adjustable tailstock with a locking facility
- Maximum torque : +/- 600 Nm
- Distance between platens : from 0 to 1,000 mm
- Rotational clearance : 300 mm
- Specimen holders : grooved platens of 300 mm diameter and conical jaws
- Torsion measurements are made using two strain gauges, one of capacity 600 Nm the other 60 Nm, class 0.5
- Speed of rotation : 0.1 to 250 radians/mn (other ranges on request)
- LVDT linear transducer : +5 mm stroke for measuring tailstock displacement
- Incremental angle transducer : accuracy 0.002 radians
- Integrated control, data acquisition and data handling facility using :
Control and acquisition interface
Machine control in torque or displacement mode
Torsion tests in continuous or alternate mode
Tests in creep and relaxation

We offer the following equipment :
- Standard equipment EM400
- Test machine with welded steel chassis for floor mounting
- Control and acquisition interface
- Software

Optional equipment :
- Test furnace for tests up to 500°C
- Torque meter (of required capacity)
- Manual control box

Dimensions and weight

226 x 70 x 70 cm - 280 kg


Essential requirements

Personal computer IBM compatible with RS232 free port.

230 V single phase or 380 V 3 phases, 50 Hz