tel: +48 22 499 98 98

neodymium magnets

We provide red color magnets Nd2Fe14B - our offer. All magnesy on our website are in stock for immediate delivery (see the list). Check out the magnet pricing for more details see the magnet price list

Magnet for treasure hunters F300 GOLD

Where to buy very strong magnet? Holders with magnets in airtight, solid enclosure are perfect for use in difficult weather, including during rain and snow check...

magnetic holders

Holders with magnets can be applied to facilitate production processes, underwater discoveries, or locating meteors from gold more...

Enjoy shipping of your order if the order is placed by 2:00 PM on business days.

Dhit sp. z o.o. logo
Product available Ships in 2 days

SM 18x100 [2xM5] / N42 - magnetic separator

magnetic separator

Catalog no 130269

GTIN: 5906301812715

5

Diameter Ø [±0,1 mm]

18 mm

Height [±0,1 mm]

100 mm

Weight

0.01 g

221.40 with VAT / pcs + price for transport

180.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
180.00 ZŁ
221.40 ZŁ
price from 15 pcs
171.00 ZŁ
210.33 ZŁ
price from 25 pcs
162.00 ZŁ
199.26 ZŁ

Need advice?

Give us a call +48 888 99 98 98 otherwise get in touch through request form the contact section.
Lifting power as well as appearance of neodymium magnets can be calculated using our magnetic calculator.

Orders submitted before 14:00 will be dispatched today!

SM 18x100 [2xM5] / N42 - magnetic separator

Specification/characteristics SM 18x100 [2xM5] / N42 - magnetic separator
properties
values
Cat. no.
130269
GTIN
5906301812715
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
18 mm [±0,1 mm]
Height
100 mm [±0,1 mm]
Weight
0.01 g [±0,1 mm]
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material N42

properties
values
units
remenance Br [Min. - Max.] ?
12.9-13.2
kGs
remenance Br [Min. - Max.] ?
1290-1320
T
coercivity bHc ?
10.8-12.0
kOe
coercivity bHc ?
860-955
kA/m
actual internal force iHc
≥ 12
kOe
actual internal force iHc
≥ 955
kA/m
energy density [Min. - Max.] ?
40-42
BH max MGOe
energy density [Min. - Max.] ?
318-334
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

The magnetic rod is the basic building block of grate separators. It is used for cleaning bulk products (flour, sugar, granules) and liquids (oils, juices). Thanks to the use of strong neodymium magnets, the rod catches even fine metal dust.
The construction is based on a sealed stainless steel housing. The core is a magnetic circuit generating high induction. Thanks to this, the rod is durable and hygienic.
Metal filings stick very firmly to the surface, so cleaning requires strength or a trick. You can use compressed air or special non-magnetic strippers. For easier maintenance, consider a system with a cleaning sleeve.
Magnetic induction measured in Gauss (Gs) determines the magnetic flux density on the rod surface. Standard rods (~8000 Gs) are sufficient for bolts, nails, and chips. High induction is required when contaminants are microscopic.
We fulfill custom orders for bars matched to your machine. We offer various tip options: threaded holes (e.g., M8, M10), protruding screws, flat studs, or handles. Contact us for a quote on non-standard dimensions.

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to their remarkable pulling force, neodymium magnets offer the following advantages:

  • They virtually do not lose power, because even after ten years, the decline in efficiency is only ~1% (in laboratory conditions),
  • They remain magnetized despite exposure to magnetic noise,
  • Because of the reflective layer of gold, the component looks visually appealing,
  • The outer field strength of the magnet shows advanced magnetic properties,
  • These magnets tolerate extreme temperatures, often exceeding 230°C, when properly designed (in relation to build),
  • The ability for custom shaping or adjustment to custom needs – neodymium magnets can be manufactured in many forms and dimensions, which amplifies their functionality across industries,
  • Important function in new technology industries – they serve a purpose in hard drives, rotating machines, medical equipment or even sophisticated instruments,
  • Relatively small size with high magnetic force – neodymium magnets offer impressive pulling strength in tiny dimensions, which makes them ideal in small systems

Disadvantages of NdFeB magnets:

  • They are prone to breaking when subjected to a sudden impact. If the magnets are exposed to mechanical hits, they should be placed in a protective enclosure. The steel housing, in the form of a holder, protects the magnet from fracture and additionally enhances its overall robustness,
  • They lose power at increased temperatures. Most neodymium magnets experience permanent degradation in strength when heated above 80°C (depending on the dimensions and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
  • They rust in a damp environment, especially when used outside, we recommend using sealed magnets, such as those made of rubber,
  • The use of a protective casing or external holder is recommended, since machining internal cuts in neodymium magnets is difficult,
  • Safety concern from tiny pieces may arise, if ingested accidentally, which is crucial in the protection of children. Additionally, small elements from these products can hinder health screening after being swallowed,
  • In cases of tight budgets, neodymium magnet cost may not be economically viable,

Best holding force of the magnet in ideal parameterswhat affects it?

The given pulling force of the magnet means the maximum force, determined in the best circumstances, that is:

  • with the use of low-carbon steel plate acting as a magnetic yoke
  • having a thickness of no less than 10 millimeters
  • with a refined outer layer
  • with zero air gap
  • under perpendicular detachment force
  • at room temperature

Practical lifting capacity: influencing factors

Practical lifting force is dependent on elements, by priority:

  • Air gap between the magnet and the plate, as 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.

* Lifting capacity testing was performed on a smooth plate of optimal thickness, under a perpendicular pulling force, whereas under shearing force the holding force is lower. Moreover, even a slight gap {between} the magnet’s surface and the plate reduces the lifting capacity.

Precautions with Neodymium Magnets

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.

Never bring neodymium magnets close to a phone and 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.

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.

Neodymium magnets are primarily characterized by their significant internal force. They attract to each other, and any object that comes in their way will be affected.

Magnets will attract each other within a distance of several to about 10 cm from each other. Remember not to put fingers between magnets or alternatively in their path when they attract. Depending on how huge the neodymium magnets are, they can lead to a cut or a fracture.

Neodymium magnets can become demagnetized at high temperatures.

Under specific conditions, Neodymium magnets may experience demagnetization when subjected to high temperatures.

  Magnets should not be treated as toys. Therefore, it is not recommended for youngest children to have access to them.

Neodymium magnets are not toys. You cannot allow them to become toys for children. Small magnets pose a serious choking hazard or can attract to each other in the intestines. In such cases, the only solution is to undergo surgery to remove the magnets, and otherwise, it can even lead to death.

Keep neodymium magnets away from the wallet, computer, and TV.

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, etc. devices. They can also destroy devices like video players, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Neodymium magnetic are noted for their fragility, which can cause them to crumble.

Neodymium magnetic are delicate and will shatter if allowed to collide with each other, even from a distance of a few centimeters. 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.

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.

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

Please review the information on how to handle neodymium magnets and avoid significant harm to your body, as well as prevent unintentional disruption to the magnets.

Be careful!

So that know how strong neodymium magnets are and why they are so dangerous, read the article - Dangerous strong neodymium magnets.

Dhit sp. z o.o. logo

e-mail: bok@dhit.pl

tel: +48 888 99 98 98