tel: +48 888 99 98 98

neodymium magnets

We provide red color magnets Nd2Fe14B - our offer. Practically all "magnets" in our store are in stock for immediate purchase (see the list). Check out the magnet price list for more details see the magnet price list

Magnets for fishing F200 GOLD

Where to purchase strong magnet? Holders with magnets in airtight and durable steel enclosure are perfect for use in variable and difficult climate conditions, including during snow and rain see more

magnets with holders

Magnetic holders can be applied to enhance production, underwater exploration, or locating meteorites made of metal more information...

We promise to ship ordered magnets if the order is placed before 2:00 PM on weekdays.

Dhit sp. z o.o.
Product available Ships today (order by 14:00)

SM 18x200 [2xM5] / N42 - magnetic separator

magnetic separator

Catalog no 130273

GTIN: 5906301812753

0

Diameter Ø [±0,1 mm]

18 mm

Height [±0,1 mm]

200 mm

Weight

0.01 g

442.80 with VAT / pcs + price for transport

360.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
360.00 ZŁ
442.80 ZŁ
price from 10 pcs
342.00 ZŁ
420.66 ZŁ
price from 15 pcs
324.00 ZŁ
398.52 ZŁ

Hunting for a discount?

Pick up the phone and ask +48 22 499 98 98 if you prefer let us know by means of request form the contact section.
Parameters along with appearance of a neodymium magnet can be reviewed with our our magnetic calculator.

Same-day processing for orders placed before 14:00.

SM 18x200 [2xM5] / N42 - magnetic separator
Specification/characteristics SM 18x200 [2xM5] / N42 - magnetic separator
properties
values
Cat. no.
130273
GTIN
5906301812753
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
18 mm [±0,1 mm]
Height
200 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 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

A magnetic rod is the basic element of building grate separators and magnetic filters. It is mounted in chutes, hoppers, and pipelines to protect production machines from failure. High magnetic induction on the surface allows catching the finest iron particles.
The construction relies on a sealed, welded stainless steel housing, polished smooth. The center is filled with NdFeB magnets and pole pieces, arranged to maximize the field on the tube surface. Thanks to this, the rod is durable, hygienic, and easy to keep clean.
Due to the high power of the magnet, direct removal of filings can be troublesome and time-consuming. The most effective home method is using adhesive tape, which we wrap around the dirt and peel off. For easier operation, it is worth considering ordering a rod in a version with a cleaning sleeve.
The Gauss value tells us how effectively and deeply the magnet will catch contaminants. Standard rods (~8000 Gs) are sufficient for catching screws, nails, and steel shavings. High Power versions (~12000-14000 Gs) are necessary for catching metallic dust, oxides, and stainless steel after processing.
Yes, as a manufacturer, we make rods of any length and diameter (standard is dia 25mm and 32mm). You can choose a mounting method consistent with your technical design. Contact us for a quote on a non-standard dimension.

Advantages and disadvantages of rare earth magnets.

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

  • They retain full power for nearly 10 years – the drop is just ~1% (according to analyses),
  • Magnets very well protect themselves against demagnetization caused by ambient magnetic noise,
  • The use of an refined layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • They are known for high magnetic induction at the operating surface, making them more effective,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to modularity in designing and the capacity to adapt to specific needs,
  • Fundamental importance in modern industrial fields – they are utilized in mass storage devices, drive modules, precision medical tools, as well as complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which makes them useful in compact constructions

Problematic aspects of neodymium magnets: application proposals

  • At very strong impacts they can break, 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 suffer a drop in power. 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
  • When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
  • We suggest a housing - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complex forms.
  • Potential hazard to health – tiny shards of magnets pose a threat, in case of ingestion, which is particularly important in the context of child health protection. It is also worth noting that small components of these magnets can be problematic in diagnostics medical when they are in the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

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

The declared magnet strength refers to the peak performance, obtained under optimal environment, namely:

  • with the application of a sheet made of special test steel, guaranteeing full magnetic saturation
  • with a thickness minimum 10 mm
  • with an ideally smooth touching surface
  • without any clearance between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • in stable room temperature

Determinants of lifting force in real conditions

During everyday use, the real power results from a number of factors, listed from the most important:

  • Gap (between the magnet and the metal), because even a very small distance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to varnish, rust or debris).
  • Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Material type – ideal substrate is pure iron steel. Hardened steels may attract less.
  • Surface structure – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
  • Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

* Lifting capacity was measured using a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the lifting capacity is smaller. Moreover, even a small distance {between} the magnet’s surface and the plate lowers the lifting capacity.

Precautions when working with neodymium magnets

GPS and phone interference

A strong magnetic field disrupts the operation of compasses in smartphones and GPS navigation. Maintain magnets near a device to prevent breaking the sensors.

Thermal limits

Do not overheat. NdFeB magnets are sensitive to temperature. If you require resistance above 80°C, look for special high-temperature series (H, SH, UH).

Bone fractures

Protect your hands. Two powerful magnets will join immediately with a force of massive weight, crushing anything in their path. Be careful!

Caution required

Handle magnets consciously. Their immense force can surprise even professionals. Plan your moves and do not underestimate their force.

ICD Warning

For implant holders: Strong magnetic fields disrupt electronics. Keep at least 30 cm distance or ask another person to handle the magnets.

Allergic reactions

A percentage of the population suffer from a hypersensitivity to nickel, which is the common plating for NdFeB magnets. Prolonged contact might lead to skin redness. We recommend wear protective gloves.

Safe distance

Avoid bringing magnets near a purse, computer, or screen. The magnetism can permanently damage these devices and erase data from cards.

Danger to the youngest

Product intended for adults. Small elements can be swallowed, leading to intestinal necrosis. Store out of reach of children and animals.

Protective goggles

NdFeB magnets are sintered ceramics, meaning they are fragile like glass. Impact of two magnets will cause them shattering into small pieces.

Do not drill into magnets

Powder produced during grinding of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Attention!

Need more info? Check our post: Why are neodymium magnets dangerous?

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98