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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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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. Switching the magnet on and off is done with a lever. This ensures full work safety even in case of a power failure in the hall.
The force given in the name is the maximum value in the laboratory. Thin sheet metal or paint drastically reduce lifting capacity. When selecting a lifter, check the capacity chart and keep a safety margin.
Thanks to the specially profiled V-shaped foot, lifting pipes is possible. The lifter is universal - for flat bars and rods. However, remember that lifting capacity for round elements is usually 50% less than for flat ones.
The device must withstand a load three times greater than nominal during tests. It guarantees the lifter won't drop the load with a slight jerk. Despite safeguards, work requires caution. Products have a CE declaration of conformity.
Regularly check the condition of the magnetic foot. Dirt and filings should be removed after each use. Protect the device from moisture and impacts.

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to their immense strength, neodymium magnets offer the following advantages:

  • They retain their magnetic properties for around ten years – the drop is just ~1% (in theory),
  • They protect against demagnetization induced by external magnetic influence effectively,
  • Because of the reflective layer of silver, the component looks aesthetically refined,
  • They have extremely strong magnetic induction on the surface of the magnet,
  • Thanks to their exceptional temperature resistance, they can operate (depending on the shape) even at temperatures up to 230°C or more,
  • With the option for customized forming and targeted design, these magnets can be produced in numerous shapes and sizes, greatly improving design adaptation,
  • Significant impact in new technology industries – they are used in data storage devices, electric motors, medical equipment and sophisticated instruments,
  • Relatively small size with high magnetic force – neodymium magnets offer impressive pulling strength in small dimensions, which makes them useful in compact constructions

Disadvantages of NdFeB magnets:

  • They can break when subjected to a strong impact. If the magnets are exposed to physical collisions, they should be placed in a protective case. The steel housing, in the form of a holder, protects the magnet from cracks and additionally reinforces its overall robustness,
  • High temperatures may significantly reduce the magnetic power of neodymium magnets. Typically, above 80°C, they experience permanent loss in performance (depending on form). 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,
  • They rust in a wet environment. If exposed to rain, we recommend using moisture-resistant magnets, such as those made of polymer,
  • Limited ability to create threads in the magnet – the use of a mechanical support is recommended,
  • Safety concern linked to microscopic shards may arise, when consumed by mistake, which is notable in the family environments. Moreover, minuscule fragments from these devices may disrupt scanning once in the system,
  • Higher purchase price is an important factor to consider compared to ceramic magnets, especially in budget-sensitive applications

Highest magnetic holding forcewhat affects it?

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

  • using a steel plate with low carbon content, serving as a magnetic circuit closure
  • with a thickness of minimum 10 mm
  • with a smooth surface
  • in conditions of no clearance
  • under perpendicular detachment force
  • at room temperature

Practical aspects of lifting capacity – factors

Practical lifting force is determined by elements, by priority:

  • Air gap between the magnet and the plate, since 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 measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the holding force is lower. Additionally, even a minimal clearance {between} the magnet and the plate decreases the holding force.

Safety Precautions

Never bring neodymium magnets close to a phone and GPS.

Neodymium magnets are a source of strong magnetic fields that cause interference with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.

Keep neodymium magnets away from 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 damage videos, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Neodymium magnets are delicate as well as can easily break as well as shatter.

In the event of a collision between two neodymium magnets, it can result in them getting chipped. 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.

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.

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. Even if the magnetic field does not affect the device, it can damage its components or deactivate the entire device.

 It is important to keep neodymium magnets away from youngest children.

Neodymium magnets are not toys. You cannot allow them to become toys for children. In such a situation, surgery is necessary to remove them. In the worst case scenario, it can result in death.

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.

If you have a nickel allergy, avoid contact with neodymium magnets.

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.

Magnets will attract to each other, so remember not to allow them to pinch together without control or place your fingers in their path.

Magnets may crack or alternatively crumble with uncontrolled connecting to each other. You can't approach them to each other. At a distance less than 10 cm you should hold them very strongly.

Neodymium magnets are among the strongest magnets on Earth. The surprising force they generate between each other can shock you.

Read the information on our website on how to properly utilize neodymium magnets and avoid significant harm to your body and unintentional disruption to the magnets.

Safety precautions!

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

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tel: +48 888 99 98 98