Electrically switchable lifting system, 20% ED
Function
For the handling of ferromagnetic parts, magnet systems are employed that remain in the "magnetic" state for over 75% of the time. Only for depositing or picking up the in most cases large weight does current flow in compensation, as the magnet system is then "magnetically neutral".
The current flow time is thus significantly lower than on other applications in which a current flow time of 50% usually has to be assumed. On the other hand, this means that the emphasis in the design is on holding force and not so much on compensation by the current.
Design
On tripolar displacement systems, maximum efficiency is achieved thanks to their self-contained design. Unfortunately, these systems are highly unsuitable for round workpieces (pipes, axles, etc.) and thus rarely used.
New from ThyssenKrupp Magnettechnik is a magnet system with two poles that works on the field displacement principle. As two poles can always easily be adapted to a round workpiece, this ensures the optimum discharge of force. By using suitable pole shoes, this version is also suitable for flat workpieces.
Product range
Product range
The SV series has a simple and hence inexpensive design as only a single magnet is employed. The SVV, on the other hand, is distinguished by its very high power-to-weight ratio, as here maximum holding force is achieved on minimum contact surface area with a high-depth magnetic field. The SV_2P is particularly suitable for round loads as this is a bipolar system. Optimum contact is thus ensured between the magnetic pole strips and the round workpiece.
In all cases NdFeB is used as the magnetic material.
For the sake of simplicity the right table compares the technical data of the bipolar variant, too.