UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder
search holder
Catalog no 210421
GTIN: 5906301814061
Diameter Ø [±0,1 mm]
75 mm
Height [±0,1 mm]
25 mm
Weight
900 g
Load capacity
310 kg / 3040.06 N
Coating
[NiCuNi] nickel
150.00 ZŁ with VAT / pcs + price for transport
121.95 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?Need help making a decision?
Give us a call
+48 22 499 98 98
otherwise contact us through
form
the contact form page.
Lifting power and structure of a magnet can be tested with our
our magnetic calculator.
Same-day processing for orders placed before 14:00.
UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder
Magnetic properties of material N42
Physical properties of NdFeB
Shopping tips

Advantages and disadvantages of neodymium magnets NdFeB.
In addition to their exceptional magnetic power, neodymium magnets offer the following advantages:
- They virtually do not lose power, because even after 10 years, the decline in efficiency is only ~1% (in laboratory conditions),
- They show superior resistance to demagnetization from external field exposure,
- In other words, due to the glossy gold coating, the magnet obtains an professional appearance,
- They exhibit extremely high levels of magnetic induction near the outer area of the magnet,
- They are suitable for high-temperature applications, operating effectively at 230°C+ due to advanced heat resistance and form-specific properties,
- With the option for fine forming and precise design, these magnets can be produced in multiple shapes and sizes, greatly improving engineering flexibility,
- Key role in cutting-edge sectors – they are utilized in data storage devices, electromechanical systems, medical equipment and sophisticated instruments,
- Compactness – despite their small size, they deliver powerful magnetism, making them ideal for precision applications
Disadvantages of NdFeB magnets:
- They can break when subjected to a sudden impact. If the magnets are exposed to shocks, it is advisable to use in a protective case. The steel housing, in the form of a holder, protects the magnet from fracture , and at the same time increases its overall durability,
- They lose field intensity at increased temperatures. Most neodymium magnets experience permanent decline in strength when heated above 80°C (depending on the dimensions and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
- Magnets exposed to moisture can degrade. Therefore, for outdoor applications, it's best to use waterproof types made of rubber,
- The use of a protective casing or external holder is recommended, since machining multi-axis shapes in neodymium magnets is restricted,
- Health risk due to small fragments may arise, in case of ingestion, which is notable in the health of young users. Additionally, small elements from these assemblies may complicate medical imaging when ingested,
- High unit cost – neodymium magnets are more expensive than other types of magnets (e.g., ferrite), which can restrict large-scale applications
Handle with Care: Neodymium Magnets
It is crucial not to allow the magnets to pinch together uncontrollably or place your fingers in their path as they attract to each other.
In the case of holding a finger in the path of a neodymium magnet, in that situation, a cut or a fracture may occur.
Neodymium magnets are among the strongest magnets on Earth. The surprising force they generate between each other can shock you.
On our website, you can find information on how to use neodymium magnets. This will help you avoid injuries and prevent damage to the magnets.
Avoid bringing neodymium magnets close to a phone or GPS.
Neodymium magnets generate intense magnetic fields that interfere with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.
Magnets made of neodymium are highly susceptible to damage, leading to their cracking.
In the event of a collision between two neodymium magnets, it can result in them getting chipped. They are coated with a shiny nickel plating similar to steel, but they are not as hard. At the moment of collision between the magnets, tiny sharp metal fragments can be propelled in various directions at high speed. Eye protection is recommended.
Maintain neodymium magnets away from children.
Not all neodymium magnets are toys, so do not let children play with them. Small magnets pose a serious choking hazard or can attract to each other in the intestines. In such cases, the only solution is to undergo surgery to remove the magnets, and otherwise, it can even lead to death.
People with pacemakers are advised to avoid neodymium magnets.
Neodymium magnets produce strong magnetic fields that can interfere with the operation of a heart pacemaker. However, if the magnetic field does not affect the device, it can damage its components or deactivate the device when it is in a magnetic field.
Neodymium magnets can demagnetize at high temperatures.
Despite the fact that magnets have been observed to maintain their efficacy up to temperatures of 80°C or 175°F, it's essential to consider that this threshold may fluctuate depending on the magnet's type, configuration, and intended usage.
Under no circumstances should neodymium magnets be placed near a computer HDD, TV, and wallet.
Strong magnetic fields emitted by neodymium magnets can damage magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other devices. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. Avoid placing neodymium magnets in close proximity to electronic devices.
The magnet is coated with nickel - be careful if you have an allergy.
Studies show a small percentage of people have allergies to certain metals, including nickel. An allergic reaction often manifests as skin redness and rash. If you have a nickel allergy, you can try wearing gloves or simply avoid direct contact with nickel-plated neodymium magnets.
Dust and powder from neodymium magnets are highly flammable.
Avoid drilling or mechanical processing of neodymium magnets. If the magnet is crushed into fine powder or dust, it becomes highly flammable.
Safety rules!
To show why neodymium magnets are so dangerous, see the article - How dangerous are strong neodymium magnets?.