Neodymium magnets are among the strongest magnets in the world. These magnets are commercially available under the name NdFeB or neodymium iron boron magnets. Quder magnets are great magnets for RC construction. However, they are also used for electric motors. Depending on their size, block magnets have a holding force of up to several hundred kilograms. Our smallest block magnets, for example, have an adhesive force of 150g with a size of just 2.0 x 2.0 x 1.0 mm. Our strongest block magnet has an adhesive force of 1,500 kg at a size of 140 x 140 x 30 mm.
For better comparison, that is less than half the size of an A4 page.
Thanks to the axial magnetisation, these super magnets have a wide range of applications. In contrast to diametrical magnetisation, this direction of magnetisation is parallel to the central axis.
They are very suitable for attaching to whiteboards or blackboards. They are also suitable for modelling (e.g. brushless motors). Magnets with one direction of magnetisation are often found in loudspeakers, sensors, fasteners and magnetic couplings, as a high adhesive force is required along the axis.
Bestsellers: Block magnet 10x10x5 mm N45 / Block magnet 20x10x5 mm N45 / Block magnet 40x20x10 N42
In our shop for super magnets you will find all possible sizes of magnetic blocks. The smallest and weakest block has a size of 2.0 mm x 2.00 mm x 1.0 mm. However, it already has a holding force of approx. 150 grams. The largest and strongest block magnet has a size of 140 mm x 140 mm x 30 mm and holds approx. 1500 KG. If you buy such a strong neodymium magnet, please take special care. Please also read our notes on magnets
Neodymium magnets are so strong because they are made of a special alloy and have specific physical properties that give them exceptionally high magnetic energy. This is why they are often called death magnets. Here are the main reasons for their power:
Material composition:
Neodymium mangnet blocks consist mainly of an alloy of neodymium, iron and boron (NdFeB). Neodymium is a rare earth metal that has particularly strong magnetic properties when combined with iron and boron. This combination creates a magnet with an extremely high magnetic flux density.High magnetic energy density:
Neodymium block magnets have a very high energy density (maximum energy product), which is measured in Megagauss-Oersted (MGOe) or kilojoules. This high energy density means that they are able to generate a strong magnetic field in a very small volume. Due to its shape, a ring magnet, for example, has a somewhat weaker magnetic field.Crystalline structure:
The crystalline structure of the NdFeB alloy contributes to the high adhesive force. The atoms in the alloy are arranged in such a way that they have a strong magnetic anisotropy, which means that they can be magnetised preferentially in a certain direction, thereby increasing the overall magnetisation.High coercive field strength:
The neodymium magnets have a high coercive field strength, which means that they are very resistant to demagnetisation. This helps the magnets to retain their magnetisation even under adverse conditions (such as high temperatures or external magnetic fields).Powder metallurgy process:
Neodymium magnetic blocks are manufactured using a powder metallurgy process in which the alloy is pulverised, pressed into the desired shape and then sintered (baked). This process allows the magnetic properties of the material to be maximised and a uniform adhesive force to be achieved.Rare earth metal properties:
Rare earth metals such as neodymium have unique electronic properties that contribute to strong ferromagnetism. In combination with iron and boron in the alloy, this property is optimised to create extremely strong magnets.
Whether screw-on, self-adhesive or as a pure block magnet. Neodymium blocks are used in a wide variety of areas. From model making and trade fair construction to furniture making and the automotive industry. Neodymium magnets have become indispensable here. The magnets are also used in complex industrial systems such as metal detectors or even tubular bag machines. When buying block magnets, please always pay attention to the specified holding force. Neodymium block magnets are extremely strong even at a very small size. The rod magnets from our range are just as strong but in a different shape.