e-mail: bok@dhit.pl

neodymium magnets

We provide blue color magnets Nd2Fe14B - our store's offer. Practically all "neodymium magnets" in our store are available for immediate purchase (see the list). Check out the magnet pricing for more details see the magnet price list

Magnet for treasure hunters F200 GOLD

Where to buy strong neodymium magnet? Magnetic holders in airtight and durable steel enclosure are perfect for use in difficult weather conditions, including during rain and snow more

magnets with holders

Magnetic holders can be used to facilitate production, underwater discoveries, or searching for meteors from gold read...

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SM 32x425 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130464

GTIN: 5906301813354

Diameter Ø

32 mm [±1 mm]

Height

425 mm [±1 mm]

Weight

2353 g

Magnetic Flux

~ 10 000 Gauss [±5%]

1340.70 with VAT / pcs + price for transport

1090.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
1090.00 ZŁ
1340.70 ZŁ
price from 5 pcs
981.00 ZŁ
1206.63 ZŁ

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Call us +48 888 99 98 98 otherwise contact us by means of contact form through our site.
Lifting power along with structure of magnets can be estimated on our magnetic mass calculator.

Orders placed before 14:00 will be shipped the same business day.

SM 32x425 [2xM8] / N52 - magnetic separator

Specification / characteristics SM 32x425 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130464
GTIN 5906301813354
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 425 mm [±1 mm]
Weight 2353 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 16 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x425 [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

Other proposals

This product serves to effectively catch ferromagnetic contaminants from bulk and liquid products. It is mounted in chutes, hoppers, and pipelines to protect production machines from failure. Thanks to the use of strong neodymium magnets, the rod catches even metallic dust.
The outer layer is hygienic acid-resistant steel, approved for food contact. The core is a precise magnetic system generating high induction (Gauss). Such construction ensures full resistance to corrosion, water, oils, and acids.
Due to the high power of the magnet, direct removal of filings can be troublesome and time-consuming. We recommend sticking packing tape to the cluster of filings and tearing it off together with the contaminants. In industry, cover tubes (so-called Easy Clean system) are used, from which the magnetic insert slides out.
Magnetic induction measured in Gauss (Gs) determines the density of magnetic flux on the rod surface. For basic machine protection against pieces of iron, standard power is sufficient. For the food and precision industry, we recommend the highest induction parameters.
Yes, as a manufacturer, we make rods of any length and diameter (standard is dia 25mm and 32mm). We offer various tip options: threaded holes (e.g., M8, M10), protruding screws, flat pivots, mills, or handles. We ensure fast realization of special orders and technical advice.

Pros and cons of NdFeB magnets.

Besides their high retention, neodymium magnets are valued for these benefits:

  • Their magnetic field is durable, and after approximately ten years it decreases only by ~1% (theoretically),
  • Neodymium magnets remain remarkably resistant to magnetic field loss caused by magnetic disturbances,
  • Thanks to the shiny finish, the plating of Ni-Cu-Ni, gold, or silver gives an professional appearance,
  • Magnets are distinguished by exceptionally strong magnetic induction on the outer side,
  • Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to modularity in shaping and the capacity to customize to client solutions,
  • Fundamental importance in future technologies – they are used in hard drives, electromotive mechanisms, diagnostic systems, also other advanced devices.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages of neodymium magnets:

  • At strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and 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 power 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
  • They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in creating nuts and complex forms in magnets, we recommend using a housing - magnetic holder.
  • Health risk resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small elements of these magnets can be problematic in diagnostics medical after entering the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Magnetic strength at its maximum – what contributes to it?

Information about lifting capacity was determined for the most favorable conditions, assuming:

  • with the application of a yoke made of special test steel, ensuring maximum field concentration
  • whose thickness reaches at least 10 mm
  • with a surface perfectly flat
  • without any air gap between the magnet and steel
  • under axial force direction (90-degree angle)
  • at temperature approx. 20 degrees Celsius

Lifting capacity in real conditions – factors

During everyday use, the real power depends on several key aspects, presented from most significant:

  • Space between surfaces – every millimeter of separation (caused e.g. by varnish or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Loading method – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits much less (typically approx. 20-30% of nominal force).
  • Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
  • Material type – ideal substrate is pure iron steel. Cast iron may generate lower lifting capacity.
  • Base smoothness – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
  • Temperature influence – hot environment weakens pulling force. Too high temperature can permanently damage the magnet.

* Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the holding force is lower. Moreover, even a small distance {between} the magnet’s surface and the plate decreases the load capacity.

Safe handling of NdFeB magnets

Allergy Warning

A percentage of the population have a contact allergy to nickel, which is the typical protective layer for neodymium magnets. Extended handling may cause an allergic reaction. It is best to use protective gloves.

Conscious usage

Handle with care. Rare earth magnets act from a distance and snap with massive power, often quicker than you can react.

Thermal limits

Keep cool. Neodymium magnets are susceptible to heat. If you require operation above 80°C, look for HT versions (H, SH, UH).

Magnet fragility

Despite metallic appearance, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.

Precision electronics

A strong magnetic field interferes with the operation of magnetometers in phones and navigation systems. Maintain magnets near a device to avoid breaking the sensors.

Safe distance

Equipment safety: Strong magnets can damage data carriers and delicate electronics (pacemakers, medical aids, timepieces).

Physical harm

Watch your fingers. Two large magnets will snap together instantly with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!

This is not a toy

Adult use only. Small elements can be swallowed, leading to severe trauma. Keep away from children and animals.

Do not drill into magnets

Mechanical processing of NdFeB material poses a fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Danger to pacemakers

Warning for patients: Powerful magnets affect medical devices. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Security!

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

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98