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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

bulk discounts:

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Parameters and structure of neodymium magnets can be tested using our modular calculator.

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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 NdFeB

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

It is a powerless device, utilizing the energy of permanent magnets. Control involves changing the pole arrangement inside the body with a lever. The load will not fall automatically.
Catalog parameters refer to optimal conditions (thick, clean steel). Force is affected by material thickness (the thinner, the weaker it holds) and surface contamination. Always choose a lifter with reserve power, checking the thickness table.
Thanks to the specially profiled V-shaped foot, lifting pipes is possible. This enables stable lifting of both flat sheets and pipes or shafts. When lifting pipes, capacity drops by half - check specifications.
The device must withstand a load three times greater than nominal during tests. This gives a large safety margin in case of unforeseen forces. Always follow health and safety rules for vertical transport. Products have a CE declaration of conformity.
Regularly check the condition of the magnetic foot. Mechanical damage to the foot can drastically reduce grip force. It is worth having the lifter certified once a year.

Advantages and disadvantages of neodymium magnets NdFeB.

Besides their durability, neodymium magnets are valued for these benefits:

  • They retain their attractive force for almost 10 years – the loss is just ~1% (in theory),
  • They are extremely resistant to demagnetization caused by external magnetic sources,
  • The use of a polished gold surface provides a refined finish,
  • They possess strong magnetic force measurable at the magnet’s surface,
  • With the right combination of magnetic alloys, they reach increased thermal stability, enabling operation at or above 230°C (depending on the structure),
  • The ability for accurate shaping or customization to custom needs – neodymium magnets can be manufactured in many forms and dimensions, which extends the scope of their use cases,
  • Wide application in modern technologies – they find application in HDDs, electric drives, diagnostic apparatus and technologically developed systems,
  • Thanks to their concentrated strength, small magnets offer high magnetic performance, while occupying minimal space,

Disadvantages of magnetic elements:

  • They can break when subjected to a strong impact. If the magnets are exposed to external force, it is suggested to place them in a steel housing. The steel housing, in the form of a holder, protects the magnet from cracks and additionally reinforces its overall strength,
  • High temperatures may significantly reduce the holding force of neodymium magnets. Typically, above 80°C, they experience permanent weakening in performance (depending on size). 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,
  • Magnets exposed to humidity can rust. Therefore, for outdoor applications, we advise waterproof types made of rubber,
  • Limited ability to create internal holes in the magnet – the use of a external casing is recommended,
  • Safety concern from tiny pieces may arise, especially if swallowed, which is notable in the protection of children. It should also be noted that small elements from these magnets might hinder health screening once in the system,
  • Higher purchase price is one of the drawbacks compared to ceramic magnets, especially in budget-sensitive applications

Maximum magnetic pulling forcewhat contributes to it?

The given pulling force of the magnet corresponds to the maximum force, calculated in ideal conditions, namely:

  • with mild steel, serving as a magnetic flux conductor
  • with a thickness of minimum 10 mm
  • with a refined outer layer
  • with zero air gap
  • with vertical force applied
  • in normal thermal conditions

Key elements affecting lifting force

The lifting capacity of a magnet is determined by in practice key elements, ordered from most important to least significant:

  • Air gap between the magnet and the plate, because even a very small distance (e.g. 0.5 mm) causes 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 checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the lifting capacity is smaller. In addition, even a minimal clearance {between} the magnet and the plate reduces the holding force.

Precautions

Neodymium magnets are over 10 times stronger than ferrite magnets (the ones in speakers), and their strength can surprise you.

To use magnets properly, it is best to familiarize yourself with our information beforehand. This will help you avoid significant harm to your body and the magnets themselves.

Neodymium magnets should not be near people with pacemakers.

Neodymium magnets generate very strong magnetic fields that can interfere with the operation of a pacemaker. This is because many of these devices are equipped with a function that deactivates the device in a magnetic field.

Do not bring neodymium magnets close to GPS and smartphones.

Magnetic fields generated by neodymium magnets interfere with compasses and magnetometers used in navigation, as well as internal compasses of smartphones and GPS devices.

Dust and powder from neodymium magnets are flammable.

Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. If the magnet is crushed into fine powder or dust, it becomes highly flammable.

Neodymium magnets can demagnetize at high temperatures.

Although magnets are generally resilient, their ability to maintain their magnetic potency can be influenced by factors like the type of material used, the magnet's shape, and the intended purpose for which it is employed.

 Maintain neodymium magnets away from children.

Remember that 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 attract to each other, pinch the skin, and cause significant swellings.

Neodymium magnets bounce and also clash mutually within a radius of several to around 10 cm from each other.

Neodymium magnetic are delicate and can easily crack as well as get damaged.

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, small sharp metal fragments can be propelled in various directions at high speed. Eye protection is recommended.

Make sure not to bring neodymium magnets close to the TV, wallet, and computer HDD.

The strong magnetic field generated by neodymium magnets can destroy magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, or other devices. They can also destroy devices like video players, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these 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.

Warning!

To show why neodymium magnets are so dangerous, read the article - How very dangerous are very strong neodymium magnets?.

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tel: +48 888 99 98 98