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Q-40-40-20-N: Block 40 x 40 x 20 mm
| Article ID: | Q-40-40-20-N |
| Shape: | Block |
| Size: | 40 x 40 x 20 mm |
| Tolerance: | +/- 0.1 mm |
| Weight: | 240 g |
| Coating: | Nickel-plated (Ni-Cu-Ni) |
| Magnetisation: | N42 |
| Strength: | approx. 60 Kg |
| Max. operational temperature: | 80°C |
incl. 16% VAT
|
available: 0 pcs. Available again around 02/04/2010 |
The Colossus is delivered with two protective metal sheaths which reduce the exterior magnetic field.
That's how horse shoe magnets look like at the University of Karlsruhe! Manuel Fahrer (fahrer@iekp.fzk.de) describes with the following 3 pictures how they built
A high energy magnet made out of 8 colossi: "A magnet with pole shoes and yoke made of iron. The 8 'colossus' magnets can be seen under the holding frame made of aluminium. In a 1,5 mm high slot and an area of 1 cm² there is a field of 3,2 Tesla. Measuring this field was not easy because there are only few probes on the market that are thin enough and can still measure such a strong field at room temperature. That's why we build the probe ourselves and calibrated it with a calibration magnet.
This magnet is now used for the testing of particle physics detecting components."
"Colossus (N42) have been used instead of the larger 'magnet of death' , because they have a slightly higher remanence and therefore energy density. Mounting the magnets was not easy: magnets of the same polarity placed next to each other tend to repulse each other sideways. In this case we had to use vices and a frame made of aluminium to get the magnets side by side.
All the surfaces were grinded flat and smooth to transport the magnetic field undisturbed by air gaps. After the construction was completed it had to be disassembled again to decrease the distance between the pole shoes. That could not be done by hand and a winch was deployed. The force needed was an estimated 200 kpond. Unfortunately there are no pictures of this undertaking."
"The simulation of the magnet with field lines and field distribution. In the simulation only 2,8 Tesla are reached. But the simulation assumes a 2D situation. This means it simulates a magnet with pole shoes in the form of a roof. In Reality the field lines are compressed on all four sides (like a pyramid), and that's why the values are actually higher."
Customer applications that use this article:
Belts Ready to Hand
Hanging up belts - without the annoying hooks
Coin sculpture
The adhesive force of a COLOSSUS is impressive!
Embed it in your ceiling and you can hang-up your knight's armour (whether or not you can ever get the armour down is something we cannot guarantee!)
Do we have to remind you that The Colossus is not suitable for children?