Cross-beam lifting magnets ET


Cross-beam lifting magnets ET

Set of lifting magnets

The ET type cross-beam lifting magnets (electromagnetic grippers) are designed for handling steel plates, sections, profiles, pipes and bars up to 18 m long. The material can be lifted individually, in packages or bundles. The lifting magnets mounted on the common cross-beam enable the handling of low-rigid materials with a high deflection coefficient, such as thin sheets, reinforcing bars, etc. ET Electromagnets improve internal transport and shorten loading time in steelworks, shipyards, ports, railway terminals and steel warehouses.

The cross-beam electromagnetic grippers are reliable, very robust and designed for S3 75% intermittent periodic duty. The electromagnetic grippers are characterized by high attractive force, high lifting capacity and high handling efficiency. The ET electromagnets have high-quality windings made of aluminum tape with the highest class of insulation. This makes them resistant to high temperatures and very durable.

Performance features of cross-beam lifting magnets

  • Custom-made cross-beam lifting magnets according to individual requirements.
  • Robust and durable design adapted for intermittent operation under difficult working conditions.
  • Length of the cross-beam up to 12 m.
  • Power of the electromagnet set up to 50 kW.
  • High-quality electromagnet winding made of aluminum tape.
  • Electromagnet insulation made in class C up to 300°C.
  • Relative duty cycle 75%. Maximum cycle time 10 minutes.
  • Excellent thermal properties and optimal heat dissipation from the interior of the lifting magnet.
  • Handling of hot materials up to 650°C.
  • Adjustment of electromagnet current and attraction force by digital AC / DC converter.
  • Shortest magnetization / demagnetization time of the lifting magnet.
  • High handling efficiency compared to competitive solutions.
  • Power and control systems integrated with the gantry crane.

Applications of cross-beam electromagnets

  • Handling of single sheets and sheets in packages up to 12 m long.
  • Handling of bundles of bars, pipes, sections and steel profiles up to 18 m long.
  • Selective lifting of sheets and profiles to facilitate order completion and prepare goods for shipment.
  • Vertical storage of sheet metal increasing the capacity of steel warehouses.
  • Moving trapezoidal sheet metal and other construction materials.
  • Moving railway rails and other long items.

Electromagnetic grippers during operation

Versions of cross-beam lifting magnets

  • Lifting magnets on a common cross-beam with a fixed spacing
    Designed for lifting one type of steel product.
  • Lifting magnets on a common across-beam with variable spacing
    Designed for lifting various steel products with different arrangements of suspension points.
  • Lifting magnets on telescopic cross-beam with booms extended by hydraulic actuators
    Designed for lifting various steel products of any length without requiring manual magnets shifting.


Lifting magnets accessories

  • Control cabinet for power supply, control and monitoring of the lifting magnets.
  • Digital AC/DC converter providing precise regulation of electromagnets current, quick circuit discharge function and tipping function.
  • Emergency back-up power supply system provided with immediate voltage failure signalling and switching over to the emergency battery supply.
  • Spring-driven or motor-driven cable reel supplying power to the lifting magnets.
  • Remote control from the gantry operator control panel.
  • Radio control for ground personnel.
  • Chain slings.

Working principle of cross-beam lifting magnets

The beam traverse with the electromagnetic grippers suspended on it in a non-magnetized state (disconnected from the power supply) is lowered onto the load by the crane operator. After applying the supply voltage from the control cabinet, direct current flows through the windings of the electromagnets. A strong magnetic field is generated at the magnetic poles of the grippers. This operating state is called magnetization. The grippers attract the load until the operator turns off the power. This operating state is called demagnetization. The digital AC/DC converter installed in the control cabinet is responsible for the quick discharge function of the circuit and regulation of the power of the electromagnets. The Tipping function enables quick completion of an individual customer order, e.g. by lifting only one sheet of metal from the entire package and delivering it to the desired loading location.

Videos featuring the cross-beam lifting magnets

Why choose our cross-beam lifting magnets?

A set of electromagnets is used when a single electromagnet is unable to lift or ensure safe transport of the lifted material. Materials with a large sag, such as thin sheets or reinforcing wires in bundles, require the use of several electromagnets suspended on a common traverse. Optimal selection of the length of the traverse and the number of electromagnets for the lifted product increases operational safety and reduces the risk of accidents. Additional handling personnel are no longer required near the load, which reduces logistics costs and increases service speed.

Transport using electromagnetic systems does not cause damage to the lifted material and ensures full use of warehouse space. The Magnetix company provides control of electromagnetic gripper units both in closed and open areas. We select and deliver emergency power supply systems, which consist of a battery bank and additional control in the main electromagnet power supply cabinet. The traverses we supply are fully wired and equipped with chain slings. The traverse is powered using a cable reel.

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