Neodymium magnets – Manufacturer's Store - Largest selection in Poland

Neodymium magnets in our range - shapes and dimensions in mm

• Flat Magnets (Blocks) – Largest contact surface, ideal for gluing and fixing strips.
• Cylindrical Magnets (Discs) – Compact and strong, standard in electronics and modeling.
• Ring Magnets – Allow mounting on a screw, nail, or sliding onto rods.
• For Screws (Counter-sunk) – Have a conical hole, allowing the screw head to hide in the magnet.
• Magnetic Holders – Ready-made systems in a steel casing that reinforces power and protects the magnet.
• For Fishing/Searching – Extremely strong holders with an eyelet for retrieving objects from water.

Why choose neodyms?

1. Extreme power – Neodymium magnets are up to 10 times stronger than ordinary ferrite (black) magnets at the same size.
2. Durability – High-quality Ni-Cu-Ni coating protects against corrosion in room conditions, and the ceramic alloy ensures field stability for years.
3. Wide selection – Hundreds of sizes available ex stock: cylindrical, flat, ring, ball, and adhesive magnets.
4. Application – Ideal for concealed mounting, constructing grippers, magnetizers, or mounting tools in a workshop.

Applications of neodymium magnets in industry, workshop and home

• Industry and Automation – Metal separators, robotic grippers, generators, motors, and Hall sensors.
• Mounting and Hobby – Mounting boards, tarpaulins, lighting. Holders for underwater fishing.
• Home and Garden – Magnetic closures, cable organizers, knife and tool hangers.
• Advertising and Polygraphy – Invisible fixings in boxes, folders, and POS materials.

NdFeB magnets are a key component of modern technology. We supply the highest energy density commercially available. Our offer includes a wide assortment: from miniature 1mm magnets to large industrial magnets. They are used in: electric motors, wind generators, magnetic separators, mounting holders, and audio equipment.

Properties: Contemporary neodymium magnets achieve energy up to 52 MGOe (N52 grade). The standard operating temperature is up to 80°C, which is sufficient for 90% of applications. For industry, we have materials with increased thermal resistance. Remember: neodyms are hard but brittle – we warn against uncontrolled colliding of magnets.

Cylindrical, block or ring - how to choose the shape

Choosing between the three subcategories of neodymium magnets starts with the mounting method, not with the pull force. Cylindrical magnets work where a point grip of small diameter is needed - in sensors, in modelling, in rotating mechanisms. Their advantage is compactness: for the same mass of material a cylinder takes up less footprint than a block of similar strength. Block magnets give the largest contact area with steel, so they cope better with sheet metal and with fixing flat parts - strips, plates, housings. The flat shape also makes gluing easier, because the surface in contact with the adhesive is larger. Ring magnets solve a problem the other two shapes do not solve at all: they let a screw, pin or shaft pass through the centre. If the assembly needs a screw going through the magnet or the magnet seated on an axle, a ring is the only sensible choice - trying to drill a hole in a finished cylinder ends with the sintered material cracking. One relationship is worth remembering because it is not obvious: at the same volume, a flat magnet of large diameter holds thin sheet metal better than a tall cylinder of small diameter, because the field spreads over a larger area and the sheet does not saturate as quickly.

Which parameters really differentiate neodymium magnets

When choosing a neodymium magnet three quantities matter, and only one of them is stated outright on the product card. The first is the dimensions - and here it is not the volume itself that decides, but the ratio of diameter to height. A 20x5 mm magnet and a 10x20 mm magnet have a similar mass and behave completely differently: the first holds sheet metal more firmly, the second has a longer field reach. The second quantity is the material grade, marked with a symbol from N38 to N52. The grade describes energy density, i.e. how much magnetic field fits into a unit of volume. Going from N38 to N52 gives a gain in force of around twenty percent at identical dimensions - a noticeable difference, but not a decisive one. The choice of size matters far more: a magnet with a diameter larger by half can hold twice as much as its smaller counterpart in a higher grade. The third quantity is the operating temperature. The standard N grade works up to 80 degrees Celsius. Above that limit the magnet loses force irreversibly, and the process is one-way - cooling does not restore the parameters. For work at elevated temperature there are designations with an additional letter, where M means operation up to 100 degrees, H up to 120, SH up to 150 and UH up to 180. The letter at the end of the symbol matters more than the number before it if the magnet is to work near a motor or a heat source.

Where neodymium magnets work every day

In industry, neodymium magnets go above all where force at small size counts. In magnetic separators, rods with N52 magnets catch swarf and small steel parts out of a stream of bulk material. In robotic grippers they replace suction cups wherever the gripped part is steel and its surface is uneven or oily. In generators and electric motors they form part of the rotor, deciding the power density of the whole machine. In the workshop and in assembly, neodymium magnets serve as invisible fixings - wherever a screw or a hinge would spoil the look. Inspection hatches, finishing strips, removable panels, information plates. Ring magnets also let you combine magnetic and mechanical fixing: a screw passing through the centre of the ring secures the joint against sideways shift, which the magnetic field alone does not prevent. In home and hobby use, neodymium magnets most often serve to organise space - knife and tool racks, cable holders, closures in boxes and folders. A separate group is modelling, where small discs a few millimetres in diameter allow parts of figures and models to be swapped without glue. With every one of these applications it is worth checking that the base is ferromagnetic: a neodymium magnet does not attract aluminium, copper or austenitic stainless steel, even though all three look like metal.

What this category does not include

This category contains magnets as bare sintered material - without a housing, without a steel cup, without mounting parts. If you are looking for a ready solution to screw on or hang up, the right place is magnetic holders, where the magnet sits in a steel cup that concentrates the field. Such a construction gives several times the pull-off force of a bare magnet of the same dimensions, because the cup closes the magnetic circuit and directs the whole field to one side. Nor do we list water-resistant magnets here. The standard nickel coating protects the magnet in room conditions, but it is not meant for permanent immersion or for a chemically aggressive environment. For underwater searching and for work in damp conditions there are separate constructions with an epoxy coating or in a sealed housing. This category also does not include ferrite magnets or alnico magnets. Ferrites are several times weaker, but withstand higher temperatures and are cheaper, so they have their place where force is not critical. Alnico withstands temperatures at which neodymium would long since have lost its properties, but costs more and gives less field. If the working conditions go beyond what neodymium tolerates, it is worth consulting the choice before buying - matching the material to the conditions is cheaper than replacing a magnet that lost its force after the first heating cycle.