Magnets

Magnets

Magnets are a widespread lifting medium, which is very easy to use because there is no need for a hanging point on our load. It can magnetize metal sheets, metal rods, pipes or metal beams.

The nominal lifting capacity of each magnet is achieved under certain conditions.

The conditions which affect the lifting capacity of a magnet are as follows:

  • The surface of the material we are lifting
    When the surface is smoother and cleaner without rust and gaps, then the performance and the lifting capacity which magnet achieves are higher.
  • The thickness of the material we are lifting
    When the thickness of the load is larger, then there are more metal “molecules”, in which the magnetic force will be applied, the better the magnet is.
  • The shape of the material we are lifting
    The more flat (no curve) the load, the better the performance is magnet, and therefore greater lifting capacity. In cases where we use a magnet to lift a metal tube, the diameter of the tube also plays a role. If we lift a very long metal beam from the center with a magnet, there is the possibility of creating some deformation that can lead to a drop in the load (as a solution is the use of two or more magnet suspended in a beam so that we get down load from two or more points and avoid creating such distortion).

All of the above factors play a very important role in the lifting capacity of natural magnets and electromagnets. That’s why we need to be very careful when choosing the right (in terms of lifting capacity) magnet for our application.

Below are tables showing the change in lifting capacity depending on the surface, thickness and shape of the material that we wish to lift.

Magnets

natural and electromagnets

Magnets are divided into natural and electromagnets (which can be electrically or electrically).

  • Natural magnets, with a 3:1 fuse, can have a lifting capacity:

a few pounds (accompanying magnetic lifting materials)

(handheld magnets)

up to 5,000 kg

(magnets with lever)

  • Electromagnets, which are also available with remote control and with a demagneti- vation sensor under load (for added safety), can have a lifting capacity:

a few pounds

(electromagnet for 1350kg)

up to 50,000 kg

(various standard applications, heavy duty)

It is always possible to design special electromagnets (for scrap, sheet metal etc.) when the application so requires, in collaboration with the houses we represent, to meet the specific needs.

To find out more about magnets, their available sizes and technical features, contact us.

Natural magnet nominal lifting capacity

depending on the surface, thickness and shape of our load

Impact of nominal lifting capacity

depending on the surface change only (air gap)

The following tables illustrate the effect of lifting capacity depending on surface change only (air gap), keeping the thickness and shape of our load constant (per magnet).

Impact of nominal lifting capacity

depending on the change in thickness

The following table illustrates the effect of lifting capacity according to the thickness change, keeping the surface smooth and clean and stable the shape of our load)

Applications

Maxx series - Technolift

  • Maxx series
  • Technolift