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neodymium magnets

We provide red color magnets Nd2Fe14B - our proposal. All magnesy neodymowe 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

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SM 32x450 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130465

GTIN: 5906301813361

Diameter Ø

32 mm [±1 mm]

Height

450 mm [±1 mm]

Weight

2490 g

Magnetic Flux

~ 10 000 Gauss [±5%]

1414.50 with VAT / pcs + price for transport

1150.00 ZŁ net + 23% VAT / pcs

bulk discounts:

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Specifications along with shape of a magnet can be calculated on our power calculator.

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SM 32x450 [2xM8] / N52 - magnetic separator

Specification / characteristics SM 32x450 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130465
GTIN 5906301813361
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 32 mm [±1 mm]
Height 450 mm [±1 mm]
Weight 2490 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 17 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x450 [2xM8] / N52 - magnetic separator
properties values units
remenance Br [Min. - Max.] ? 14.2-14.7 kGs
remenance Br [Min. - Max.] ? 1420-1470 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.] ? 48-53 BH max MGOe
energy density [Min. - Max.] ? 380-422 BH max KJ/m
max. temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°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
Measurement Calculator
Pulling Force

Magnetic Field

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A magnetic rod is the basic element of building grate separators and magnetic filters. Its task is separation (separation) of metal filings from the transported material. High magnetic induction on the surface allows catching the finest iron particles.
The rod consists of a cover tube made of high-quality acid-resistant steel (AISI 304 or 316). 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.
Metal filings stick to the surface very strongly, so cleaning requires strength or cleverness. You can use compressed air or special non-magnetic strippers (rings). In industry, cover tubes (so-called Easy Clean system) are used, from which the magnetic insert slides out.
The more Gauss, the smaller and more weakly magnetic particles will be effectively caught. Standard rods (~8000 Gs) are sufficient for catching screws, nails, and steel shavings. High induction is necessary when contaminants are microscopic or weakly magnetic.
We can produce a rod of non-standard length with any mounting termination. The rod end is strictly adapted to the fastening system in your device. Contact us for a quote on a non-standard dimension.

Strengths as well as weaknesses of NdFeB magnets.

Besides their tremendous magnetic power, neodymium magnets offer the following advantages:

  • They retain magnetic properties for around 10 years – the loss is just ~1% (according to analyses),
  • Neodymium magnets remain exceptionally resistant to loss of magnetic properties caused by magnetic disturbances,
  • The use of an metallic coating of noble metals (nickel, gold, silver) causes the element to look better,
  • Magnets are characterized by very high magnetic induction on the working surface,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • Possibility of detailed forming as well as adjusting to specific conditions,
  • Huge importance in modern industrial fields – they serve a role in HDD drives, motor assemblies, medical devices, also technologically advanced constructions.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons of neodymium magnets and ways of using them

  • At strong impacts they can break, therefore we advise placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
  • Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
  • Limited ability of creating nuts in the magnet and complex forms - preferred is casing - magnet mounting.
  • Health risk related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child health protection. Furthermore, tiny parts of these devices are able to disrupt the diagnostic process medical when they are in the body.
  • Due to expensive raw materials, their price exceeds standard values,

Breakaway strength of the magnet in ideal conditionswhat contributes to it?

The specified lifting capacity concerns the maximum value, obtained under laboratory conditions, specifically:

  • using a sheet made of high-permeability steel, acting as a circuit closing element
  • whose transverse dimension reaches at least 10 mm
  • with a surface perfectly flat
  • without any insulating layer between the magnet and steel
  • during pulling in a direction perpendicular to the mounting surface
  • at ambient temperature approx. 20 degrees Celsius

Determinants of practical lifting force of a magnet

In real-world applications, the real power is determined by many variables, listed 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.
  • Force direction – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
  • Plate thickness – insufficiently thick sheet causes magnetic saturation, causing part of the power to be escaped into the air.
  • Steel type – mild steel attracts best. Higher carbon content lower magnetic permeability and lifting capacity.
  • Surface structure – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
  • Heat – NdFeB sinters have a negative temperature coefficient. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).

* Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the holding force is lower. In addition, even a slight gap {between} the magnet and the plate lowers the lifting capacity.

Warnings

Electronic hazard

Device Safety: Neodymium magnets can damage payment cards and delicate electronics (pacemakers, hearing aids, mechanical watches).

Conscious usage

Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.

Power loss in heat

Do not overheat. NdFeB magnets are susceptible to temperature. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).

GPS and phone interference

Note: neodymium magnets produce a field that confuses sensitive sensors. Keep a separation from your phone, tablet, and navigation systems.

Adults only

NdFeB magnets are not toys. Eating a few magnets can lead to them connecting inside the digestive tract, which poses a critical condition and requires urgent medical intervention.

Beware of splinters

Despite the nickel coating, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.

Medical interference

Patients with a heart stimulator should keep an safe separation from magnets. The magnetic field can disrupt the functioning of the implant.

Pinching danger

Pinching hazard: The attraction force is so great that it can cause hematomas, pinching, and even bone fractures. Use thick gloves.

Mechanical processing

Combustion risk: Neodymium dust is explosive. Avoid machining magnets without safety gear as this risks ignition.

Allergy Warning

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction appears, cease working with magnets and use protective gear.

Caution!

Need more info? Read our article: Are neodymium magnets dangerous?

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98