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neodymium magnets

We provide blue color magnetic Nd2Fe14B - our proposal. Practically all magnesy neodymowe on our website are in stock for immediate delivery (see the list). See the magnet pricing for more details check the magnet price list

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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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763.41 ZŁ
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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 magnetic lifter works based on powerful neodymium magnets and does not require any external power supply. Activation of the field occurs by turning the hand lever 180 degrees. This is a safe solution because the magnet will not drop the load upon mains voltage loss.
The nominal capacity of the lifter (e.g., 300 kg) is measured in ideal conditions: on smooth and thick steel. Thin sheet, rust, scale, or a thick layer of paint drastically lower real lifting capacity. For safety, it is recommended to oversize the device relative to the load weight (e.g., 300kg capacity for 100kg sheet).
The lower part design allows stable gripping of cylindrical and flat elements. This enables universal lifting of both flat sheets and round materials with one device. However, remember that capacity for round elements is usually 50% lower than for flat ones (check specification).
The device must withstand a load three times greater than nominal during break tests. This means break force is three times higher than declared capacity, which protects against accidents. Always observe safety rules during vertical transport, regardless of safeguards.
Regularly check the condition of the magnetic foot for damage and burrs. Dirt, filings, and grease should be removed after each use of the device. Protect the device from moisture and strong mechanical impacts.

Strengths as well as weaknesses of neodymium magnets.

Apart from their notable power, neodymium magnets have these key benefits:

  • They retain magnetic properties for nearly 10 years – the drop is just ~1% (according to analyses),
  • Magnets effectively defend themselves against loss of magnetization caused by foreign field sources,
  • A magnet with a smooth gold surface is more attractive,
  • Magnetic induction on the top side of the magnet remains impressive,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
  • Possibility of exact machining and adjusting to concrete applications,
  • Fundamental importance in future technologies – they are commonly used in HDD drives, electromotive mechanisms, medical devices, and technologically advanced constructions.
  • Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Cons of neodymium magnets and proposals for their use:

  • At very strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Limited possibility of producing threads in the magnet and complicated shapes - preferred is casing - magnetic holder.
  • Health risk resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that small elements of these devices can be problematic in diagnostics medical in case of swallowing.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Maximum lifting capacity of the magnetwhat contributes to it?

The declared magnet strength refers to the peak performance, measured under ideal test conditions, meaning:

  • with the use of a sheet made of low-carbon steel, guaranteeing maximum field concentration
  • possessing a thickness of min. 10 mm to avoid saturation
  • with an polished touching surface
  • without the slightest insulating layer between the magnet and steel
  • for force applied at a right angle (pull-off, not shear)
  • at temperature approx. 20 degrees Celsius

Key elements affecting lifting force

During everyday use, the real power depends on a number of factors, presented from most significant:

  • Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Pull-off angle – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
  • Material composition – not every steel attracts identically. High carbon content worsen the interaction with the magnet.
  • Surface condition – smooth surfaces guarantee perfect abutment, which increases force. Rough surfaces weaken the grip.
  • Operating temperature – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).

* Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Moreover, even a slight gap {between} the magnet and the plate lowers the lifting capacity.

Warnings

Choking Hazard

Absolutely keep magnets out of reach of children. Choking hazard is significant, and the consequences of magnets clamping inside the body are life-threatening.

Magnetic media

Intense magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Stay away of at least 10 cm.

Respect the power

Use magnets with awareness. Their huge power can surprise even professionals. Be vigilant and do not underestimate their force.

Allergy Warning

Studies show that the nickel plating (standard magnet coating) is a common allergen. If you have an allergy, avoid touching magnets with bare hands or choose encased magnets.

Health Danger

Life threat: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Serious injuries

Big blocks can break fingers in a fraction of a second. Under no circumstances place your hand betwixt two attracting surfaces.

Protective goggles

Beware of splinters. Magnets can fracture upon uncontrolled impact, launching shards into the air. We recommend safety glasses.

Power loss in heat

Avoid heat. NdFeB magnets are sensitive to temperature. If you require operation above 80°C, inquire about HT versions (H, SH, UH).

Dust is flammable

Combustion risk: Neodymium dust is highly flammable. Avoid machining magnets without safety gear as this may cause fire.

GPS Danger

Be aware: rare earth magnets produce a field that disrupts precision electronics. Keep a safe distance from your mobile, tablet, and GPS.

Important!

Details about hazards in the article: Safety of working with magnets.

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98