UMP 75x25 [M10x3] GW F200 GOLD DUAL / N42 - search holder
search holder
Catalog no 210452
GTIN: 5906301814122
Diameter Ø [±0,1 mm]
75 mm
Height [±0,1 mm]
25 mm
Weight
1800 g
Load capacity
601 kg / 5893.8 N
Coating
[NiCuNi] nickel
245.00 ZŁ with VAT / pcs + price for transport
199.19 ZŁ net + 23% VAT / pcs
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UMP 75x25 [M10x3] GW F200 GOLD DUAL / N42 - search holder
Magnetic properties of material N42
Physical properties of NdFeB
Shopping tips
Advantages as well as disadvantages of neodymium magnets NdFeB.
Besides their high retention, neodymium magnets are valued for these benefits:
- They retain their full power for almost ten years – the loss is just ~1% (according to analyses),
- They protect against demagnetization induced by ambient electromagnetic environments remarkably well,
- Thanks to the glossy finish and gold coating, they have an elegant appearance,
- They have very high magnetic induction on the surface of the magnet,
- They are suitable for high-temperature applications, operating effectively at 230°C+ due to advanced heat resistance and form-specific properties,
- The ability for precise shaping or adjustment to individual needs – neodymium magnets can be manufactured in many forms and dimensions, which amplifies their functionality across industries,
- Significant impact in new technology industries – they are used in hard drives, electromechanical systems, healthcare devices or even high-tech tools,
- Thanks to their concentrated strength, small magnets offer high magnetic performance, in miniature format,
Disadvantages of NdFeB magnets:
- They are fragile when subjected to a strong impact. If the magnets are exposed to shocks, it is suggested to place them in a steel housing. The steel housing, in the form of a holder, protects the magnet from fracture and enhances its overall strength,
- High temperatures may significantly reduce the field efficiency of neodymium magnets. Typically, above 80°C, they experience permanent decline in performance (depending on shape). To prevent this, we offer heat-resistant magnets marked [AH], capable of working up to 230°C, which makes them perfect for high-temperature use,
- Due to corrosion risk in humid conditions, it is advisable to use sealed magnets made of plastic for outdoor use,
- Using a cover – such as a magnetic holder – is advised due to the challenges in manufacturing fine shapes directly in the magnet,
- Possible threat due to small fragments may arise, when consumed by mistake, which is significant in the family environments. It should also be noted that small elements from these products may hinder health screening when ingested,
- Higher purchase price is one of the drawbacks compared to ceramic magnets, especially in budget-sensitive applications
Maximum magnetic pulling force – what affects it?
The given lifting capacity of the magnet corresponds to the maximum lifting force, assessed in the best circumstances, namely:
- with the use of low-carbon steel plate acting as a magnetic yoke
- of a thickness of at least 10 mm
- with a polished side
- in conditions of no clearance
- in a perpendicular direction of force
- under standard ambient temperature
What influences lifting capacity in practice
Practical lifting force is dependent on elements, by priority:
- Air gap between the magnet and the plate, because even a very small distance (e.g. 0.5 mm) can cause a drop in lifting force of up to 50%.
- Direction of applied force, because the maximum lifting capacity is achieved under perpendicular application. The force required to slide the magnet along the plate is usually several times lower.
- Thickness of the plate, as a plate that is too thin causes part of the magnetic flux not to be used and to remain wasted in the air.
- Material of the plate, because higher carbon content lowers holding force, while higher iron content increases it. The best choice is steel with high magnetic permeability and high saturation induction.
- Surface of the plate, because the more smooth and polished it is, the better the contact and consequently the greater the magnetic saturation.
- Operating temperature, since all permanent magnets have a negative temperature coefficient. This means that at high temperatures they are weaker, while at sub-zero temperatures they become slightly stronger.
* Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the holding force is lower. Additionally, even a small distance {between} the magnet’s surface and the plate lowers the lifting capacity.
Exercise Caution with Neodymium Magnets
Do not give neodymium magnets to children.
Neodymium magnets are not toys. Be cautious and make sure no child plays with them. In the case of swallowing multiple magnets simultaneously, they can attract to each other through the intestinal walls. In the worst case scenario, this can lead to death.
Neodymium magnets can demagnetize at high temperatures.
Whilst Neodymium magnets can lose their magnetic properties at high temperatures, it's important to note that the extent of this effect can vary based on factors such as the magnet's material, shape, and intended application.
Under no circumstances should neodymium magnets be brought close to GPS and smartphones.
Intense magnetic fields generated by neodymium magnets interfere with compasses and magnetometers used in navigation, as well as internal compasses of smartphones and GPS devices.
Make sure not to bring neodymium magnets close to the TV, wallet, and computer HDD.
Neodymium magnets generate intense magnetic fields that can damage magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, etc. devices. They can also damage devices like video players, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.
Neodymium magnets are among the most powerful magnets on Earth. The surprising force they generate between each other can surprise you.
Make sure to review all the information we have provided. This will help you avoid harm to your body and damage to the magnets.
Neodymium magnets are highly susceptible to damage, resulting in shattering.
Neodymium magnets are extremely delicate, and by joining them in an uncontrolled manner, they will break. Neodymium magnets are made of metal and coated with a shiny nickel surface, but they are not as hard as steel. At the moment of connection between the magnets, small metal fragments can be dispersed in different directions.
The magnet coating contains nickel, so be cautious if you have a nickel 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.
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.
If you have a finger between or alternatively on the path of attracting magnets, there may be a large cut or a fracture.
Neodymium magnets are not recommended for people with pacemakers.
Neodymium magnets generate very strong magnetic fields that can interfere with the operation of a pacemaker. This happens because such devices have a function to deactivate them in a magnetic field.
Dust and powder from neodymium magnets are flammable.
Avoid drilling or mechanical processing of neodymium magnets. If the magnet is crushed into fine powder or dust, it becomes highly flammable.
Caution!
In order for you to know how strong neodymium magnets are and why they are so dangerous, see the article - Dangerous strong neodymium magnets.