The new hydraulic device came out, absolutely saving time

The role of hydraulic system is to change the pressure to increase the force, is an essential part of mechanical equipment, the traditional hydraulic device due to the long reaction time, the use of machinery in the use of a lot of time, reduce construction efficiency.

In order to improve the running efficiency of the hydraulic device and ensure the reliable transmission of torque, not only the heavy screw shaft material is used, the gear structure is optimized, but also the screw is firmly fastened to the shaft. So far, the commonly used method is to tighten the multi section screw with torque wrench. However, there are some tolerances in this method, and it takes a lot of time to reassemble.

The new hydraulic device came out, absolutely saving time

Claus Maffei - Berstorff Development Engineer MichaelBehling said: "the process is more complex, and require to fill a higher level, higher yield and higher efficiency. Therefore, more and more high-power drives are used in twin-screw extruder to transmit higher torque to the screw."

Therefore, a new type of hydraulic devices have emerged. To resolve the problem of high return provisions tensile load exerted on the screw axis Claus Maffei Berstorff - New pretensioner, not imposing torsional stress, and easy to operate: the operator from the machine file select the correct pressure in addition to screw extruder the clamping in pre tensioning device.

The system is composed of screw mandrel, screw component and screw cap. After pressing the button, the high performance hydraulic pump is reliably stretched in the elastic range. Under these conditions, the screw is easy to install, but some preparatory work should be done: when determining the required hydraulic preload pressure, the calculation of the cold screw should take into account the material, expansion coefficient and geometric length and structural size.

It is understood that in addition to saving time, the hydraulic tensioner also has another positive effect, with obvious cost reduction advantages: the prescribed pretension prevents the melt from entering between the screw assembly and the screw mandrel. So you can avoid free, expensive work, such as dismantling or cleaning extruder.

More hydraulic configuration, welcome to the home of construction machinery（http://www.700618.com/search/0/0/default/0-0/Hydraulic pressure）。