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|Product Name:||Torsion Testing Machine||Sample Diameter:||M12-M42|
|Sample Type:||Bolt||Maximum Force:||5000Nm|
Torsion Testing Machine ISO16047 Fasteners - Torque/clamp force testing M12-M42 5000Nm ETT503A
This series torsion testing machine is specifically designed for bolt torque / clamp force test.
Torque is measured by high-accuracy and high-stability transducer
AC servo motor driver offers infinitely variable speed transmission
It can apply positive and negative torque on specimen
Emergency stop button
Automatic removing initial clamping force
Automatic calculation after test
Angle measurement can automatically recognize upper and lower yield point of materials
DSP based control system, integrating measurement with control
Fully closed-loop control of load, displacement and extension
Professional test software allows data analysis and graph plot, report print and export.
Live display of torque, angle and speed
Standard: ISO16047, BS EN 14399-2, GB/T 1231, GB/T 3623
ISO16047-Fasteners — Torque/clamp force testing
fasteners and related parts.
It is applicable, basically, to bolts, screws, studs and nuts made of carbon steel and alloy steel, whose mechanical properties are specified in ISO 898-1, ISO 898-2 or ISO 898-6, having ISO metric threads with thread sizes M3 to M39. It is also applicable to the combination of other externally and internally threaded fasteners with a triangular ISO thread according to ISO 68-1. It is not applicable to set screws and similar threaded fasteners that are not under tensile stresses, nor to screws which form their own mating thread or threaded fasteners having additional self-locking features. Unless otherwise agreed, the tests are carried out at room temperature. However, tests carried out under
standard conditions are made at a temperature of 10 °C to 35 °C. This method allows determination of the tightening characteristics of threaded fasteners and related parts.
A tightening torque is steadily applied to a bolt/nut or screw/nut assembly to generate a clamp force, and to measure and/or determine one or more of the tightening characteristics, which can include torque coefficient, coefficient of total friction, coefficient of friction between threads, coefficient of friction between bearing
surfaces, yield clamp force, yield tightening torque, rotation angle and ultimate clamp force. In the range of elastic deformation, a linear relationship is assumed between torque and clamp force.
NOTE For studs, only the coefficient of friction between threads is determined.
There are two different goals for testing:
a) testing of tightening characteristics of a fastener under standard conditions (see Clause 8), i.e. with testbearing plates/test washers type HH or type HL as specified in 7.2.2 and 7.2.3 and with test nuts or testbolts as specified in 7.3 and 7.4;
b) testing of tightening characteristics of fasteners under specific conditions, see Clause 9.The relationship between tightening characteristics which may be obtained and the parameters to be measured are shown in Table 2.
There are different methods (see 5.2 to 5.4) to describe the torque/clamp force behaviour of bolted joints with different surface and lubrication conditions.
|Maximum torque||5000 Nm|
|Torque measurement range||50-1000 Nm|
|Torque reading accuracy||±1%|
|Torque resolution||1/500000 of maximum torque|
|Torsion speed accuracy||±1.0% of reading|
|Distance between grips||650 mm|
|Power consumption||3 kW|