FAQ about neodymium magnets
Where do these strong magnets come from?
If I use two identical magnets by placing them one above the other, doubles the force of attraction?
How is the force of attraction determined?
How powerful will become permanent magnets?
Which is the maximum magnet size that I can order at your shop?
How do I calculate the flux density of a magnet?
The force of attraction is identical to the Moving thrust?
The power of neodymium magnets is really very impressive. Can I have a comparison of neodymium magnets compared to other magnetic materials?
How is the force of attraction determined, why in my case the magnet does not have the indicated force?
Of which materials are neodymium magnets composed?
Where do these strong magnets come from?
Our magnets come directly from manufacturer from China. For this reason there are no extra costs for traders.
If I use two identical magnets by placing them one above the other, doubles the force of attraction?
No, the force does not double. But increases of 50-60% approximately.
How is the force of attraction determined?
First, we examine the magnets with our pulling machine. This is a device built especially for us, despite the attraction force can be calculated from the existing formulas. But we prefer to measure ourselves. Trust is good - control is better.
How powerful will become permanent magnets?
Unfortunately we still cannot say it for sure. The rapid development of the past 80 years gives us hope that there will be an enormous progress in this field.
Which is the maximum magnet size that I can order at your shop?
The maximum size available of our neodymium magnets is
Discmagnet: Diameter: 135 mm
Blockmagnet: 215 x 100 x 30 mm, or 200 x 100 x 45 mm
The prices and delivery times are available on request.
How do I calculate the flux density of a magnet?
To calculate please open the following Excel file.
Furthermore, you still need the exact dimensions and the Tesla value.
The force of attraction is identical to the Moving thrust?
No. The Moving thrust is about 25-30% of the force of attraction. That is, if a magnet has a strength of 100 Kg force of attraction, the Moving thrust is only 25 to 30 kg.
The power of neodymium magnets is really very impressive. Can I have a comparison of neodymium magnets compared to other magnetic materials?
Diagram maximum energy products (WxH) of different magnetic materials KJ/m3:
How is the force of attraction determined, why in my case the magnet does not have the indicated force?
The identified detention force was determined at room temperature on a polished steel plate S235JR (ST37) which has a thickness of 10mm, the magnet was deducted vertically. (1kg ~ 10N). A difference of up to - 10% compared to the specified value is in exceptional cases possible. In general, the value exceeds the determined value. Please note, that on thinner, painted and not absolute plan undergrounds the pull force only represents a certain faction of the test values!
Of which materials are neodymium magnets composed?
Neodymium magnets are also known as rare earth magnets and are composed of 35% of neodymium, dysprosium 1.8%, up 61.3% of iron, and up to 1.4% of boron and 0.5% aluminum.