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neodymium magnets

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CM PML-3 / N45 - magnetic gripper

magnetic gripper

Catalog no 100226

GTIN: 5906301812623

5

Weight

9400 g

Magnetization Direction

↑ axial

Load capacity

300 kg / 2941.99 N

938.99 with VAT / pcs + price for transport

763.41 ZŁ net + 23% VAT / pcs

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CM PML-3 / N45 - magnetic gripper
Specification/characteristics CM PML-3 / N45 - magnetic gripper
properties
values
Cat. no.
100226
GTIN
5906301812623
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Weight
9400 g [±0,1 mm]
Magnetization Direction
↑ axial
Load capacity ~ ?
300 kg / 2941.99 N
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material N45

properties
values
units
remenance Br [Min. - Max.] ?
13.2-13.7
kGs
remenance Br [Min. - Max.] ?
1320-1370
T
coercivity bHc ?
10.8-12.5
kOe
coercivity bHc ?
860-995
kA/m
actual internal force iHc
≥ 12
kOe
actual internal force iHc
≥ 955
kA/m
energy density [Min. - Max.] ?
43-45
BH max MGOe
energy density [Min. - Max.] ?
342-358
BH max KJ/m
max. temperature ?
≤ 80
°C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

properties
values
units
Vickers hardness
≥550
Hv
Density
≥7.4
g/cm3
Curie Temperature TC
312 - 380
°C
Curie Temperature TF
593 - 716
°F
Specific resistance
150
μΩ⋅Cm
Bending strength
250
Mpa
Compressive strength
1000~1100
Mpa
Thermal expansion parallel (∥) to orientation (M)
(3-4) x 106
°C-1
Thermal expansion perpendicular (⊥) to orientation (M)
-(1-3) x 10-6
°C-1
Young's modulus
1.7 x 104
kg/mm²

Shopping tips

The lifter needs no battery or cable, it works mechanically. Control involves changing the pole arrangement inside the body with a lever. It is a safe solution because the magnet will not drop the load without power.
The force given in the name is the maximum value in the laboratory. Force is affected by material thickness (the thinner, the weaker it holds) and surface contamination. For safety, oversize the device relative to the load weight.
Thanks to the specially profiled V-shaped foot, lifting pipes is possible. The prism allows adapting to a round shape. However, remember that lifting capacity for round elements is usually 50% less than for flat ones.
Our lifters have a safety factor of 3:1 or 3.5:1 (depending on the model). It guarantees the lifter won't drop the load with a slight jerk. Despite safeguards, work requires caution. Lifters meet European safety standards.
The key to long life is caring for the working surface (foot). Any burrs, dents, or dirt increase the air gap and weaken lifting capacity. It is worth having the lifter certified once a year.

Advantages as well as disadvantages of NdFeB magnets.

Besides their exceptional field intensity, neodymium magnets offer the following advantages:

  • They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
  • Neodymium magnets remain remarkably resistant to magnetic field loss caused by external magnetic fields,
  • Thanks to the shimmering finish, the layer of Ni-Cu-Ni, gold, or silver-plated gives an modern appearance,
  • Magnetic induction on the top side of the magnet remains maximum,
  • Neodymium magnets are known for strong magnetic induction and the ability to work at temperatures up to 230°C or higher (depending on the magnetic form),
  • Due to the option of free forming and adaptation to specialized requirements, NdFeB magnets can be modeled in a variety of forms and dimensions, which expands the range of possible applications,
  • Versatile presence in high-tech industry – they find application in computer drives, electric drive systems, medical devices, and technologically advanced constructions.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Drawbacks and weaknesses of neodymium magnets and proposals for their use:

  • They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
  • Limited ability of producing threads in the magnet and complex forms - preferred is a housing - mounting mechanism.
  • Possible danger resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the aspect of protecting the youngest. It is also worth noting that small components of these devices are able to complicate diagnosis medical after entering the body.
  • With budget limitations the cost of neodymium magnets can be a barrier,

Maximum magnetic pulling forcewhat affects it?

Breakaway force is the result of a measurement for optimal configuration, assuming:

  • using a base made of mild steel, serving as a circuit closing element
  • whose thickness is min. 10 mm
  • characterized by lack of roughness
  • without the slightest clearance between the magnet and steel
  • during detachment in a direction perpendicular to the plane
  • at room temperature

Impact of factors on magnetic holding capacity in practice

In real-world applications, the actual lifting capacity depends on many variables, ranked from most significant:

  • Distance (betwixt the magnet and the metal), as even a tiny distance (e.g. 0.5 mm) can cause a decrease in lifting capacity by up to 50% (this also applies to paint, corrosion or debris).
  • Load vector – maximum parameter is reached only during perpendicular pulling. The force required to slide of the magnet along the surface is usually several times lower (approx. 1/5 of the lifting capacity).
  • Base massiveness – insufficiently thick sheet does not close the flux, causing part of the flux to be wasted to the other side.
  • Metal type – different alloys attracts identically. Alloy additives weaken the attraction effect.
  • Surface condition – ground elements guarantee perfect abutment, which improves field saturation. Uneven metal weaken the grip.
  • Thermal environment – temperature increase results in weakening of induction. Check the thermal limit for a given model.

* Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under perpendicular forces, whereas under shearing force the load capacity is reduced by as much as 75%. In addition, even a small distance {between} the magnet and the plate reduces the load capacity.

Safety Precautions

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.

Neodymium magnets can demagnetize at high temperatures.

Although magnets have shown to retain their effectiveness up to 80°C or 175°F, this temperature may vary depending on the type of material, shape, and intended use of the magnet.

The magnet is coated with nickel - be careful if you have an allergy.

Studies clearly indicate a small percentage of people who suffer from metal allergies such as 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.

Neodymium magnets are the most powerful, most remarkable magnets on the planet, and the surprising force between them can surprise you at first.

Make sure to review all the information we have provided. This will help you avoid harm to your body and damage to the magnets.

Keep neodymium magnets away from people with pacemakers.

Neodymium magnets generate strong magnetic fields. As a result, they interfere with the operation of a pacemaker. This happens because such devices have a function to deactivate them in a magnetic field.

 It is important to keep neodymium magnets out of reach from youngest children.

Not all neodymium magnets are toys, so do not let children play with them. In such a situation, surgery is necessary to remove them. In the worst case scenario, it can result in death.

Magnets made of neodymium are highly susceptible to damage, leading to shattering.

Neodymium magnets are delicate as well as will crack if allowed to collide with each other, even from a distance of a few centimeters. Despite being made of metal as well as coated with a shiny nickel plating, they are not as hard as steel. In the case of a collision between two magnets, there can be a scattering of small sharp metal fragments in different directions. Protecting your eyes is essential.

Avoid bringing neodymium magnets close to a phone or GPS.

Magnetic fields can interfere with compasses and magnetometers used in aviation and maritime navigation, as well as internal compasses of smartphones and GPS devices. There are neodymium magnets in every smartphone, for example, in the microphone and speakers.

Neodymium magnets can attract to each other, pinch the skin, and cause significant swellings.

In the situation of holding a finger in the path of a neodymium magnet, in that situation, a cut or a fracture may occur.

Do not place neodymium magnets near a computer HDD, TV, and wallet.

Strong fields generated by neodymium magnets can damage magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other similar devices. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic devices.

Pay attention!

To raise awareness of why neodymium magnets are so dangerous, see the article titled How dangerous are strong neodymium magnets?.

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98