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Neodymium magnets – most powerful on the market

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SM 32x450 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130303

GTIN/EAN: 5906301812968

5.00

Diameter Ø

32 mm [±1 mm]

Height

450 mm [±1 mm]

Weight

2410 g

Magnetic Flux

~ 8 000 Gauss [±5%]

check technical specifications »

1340.70 ZŁ with VAT / pcs + price for transport

1090.00 ZŁ net + 23% VAT / pcs

bulk discounts:

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price from 1 pcs
1090.00 ZŁ
1340.70 ZŁ
price from 5 pcs
981.00 ZŁ
1206.63 ZŁ
Carbon Footprint – environmental impact GPSR Regulation – product safety
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Pick up the phone and ask +48 888 99 98 98 otherwise send us a note via form the contact form page.
Specifications and appearance of magnets can be reviewed using our force calculator.

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Technical parameters - SM 32x450 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 32x450 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130303
GTIN/EAN 5906301812968
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 2410 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 17 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 32x450 [2xM8] / N42 - magnetic separator
properties values units
remenance Br [min. - max.] ? 12.9-13.2 kGs
remenance Br [min. - max.] ? 1290-1320 mT
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

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 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²
Technical specification and ecology
Chemical composition
iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%
Environmental data
recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 130303-2025
Magnet Unit Converter
Force (pull)
Magnetic Induction
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It is the "heart" of every magnetic filter used in industry for cleaning raw materials. It is commonly used for cleaning flour, sugar, plastic granules, as well as oils and coolants. Thanks to the use of strong neodymium magnets, the rod catches even metallic dust.
The rod consists of a cover tube made of high-quality acid-resistant steel (AISI 304 or 316). The core is a precise magnetic system generating high induction (Gauss). Thanks to this, the rod is durable, hygienic, and easy to keep clean.
Metal contaminants are strongly attracted, so removing them with a bare hand or glove can be difficult. The most effective home method is using adhesive tape, which we wrap around the dirt and peel off. In industry, cover tubes (so-called Easy Clean system) are used, from which the magnetic insert slides out.
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 induction is necessary when contaminants are microscopic or weakly magnetic.
We can produce a rod of non-standard length with any mounting termination. 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 neodymium magnets.

Pros

Apart from their notable holding force, neodymium magnets have these key benefits:
  • They virtually do not lose power, because even after 10 years the performance loss is only ~1% (in laboratory conditions),
  • Neodymium magnets prove to be extremely resistant to loss of magnetic properties caused by external field sources,
  • In other words, due to the glossy layer of gold, the element becomes visually attractive,
  • Neodymium magnets generate maximum magnetic induction on a contact point, which increases force concentration,
  • Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
  • Due to the potential of free molding and adaptation to individualized projects, neodymium magnets can be modeled in a broad palette of forms and dimensions, which amplifies use scope,
  • Significant place in modern technologies – they serve a role in HDD drives, electromotive mechanisms, medical devices, as well as modern systems.
  • Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Disadvantages

Problematic aspects of neodymium magnets and proposals for their use:
  • To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
  • Neodymium magnets lose their strength 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 advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
  • Due to limitations in producing threads and complicated shapes in magnets, we recommend using cover - magnetic mount.
  • Health risk related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Furthermore, small components of these magnets are able to be problematic in diagnostics medical when they are in the body.
  • With large orders the cost of neodymium magnets can be a barrier,

Pull force analysis

Maximum lifting force for a neodymium magnet – what contributes to it?

The load parameter shown represents the limit force, measured under laboratory conditions, specifically:
  • using a base made of low-carbon steel, serving as a magnetic yoke
  • with a thickness no less than 10 mm
  • characterized by even structure
  • without any air gap between the magnet and steel
  • during pulling in a direction vertical to the plane
  • in neutral thermal conditions

Practical aspects of lifting capacity – factors

Real force impacted by specific conditions, such as (from priority):
  • Distance (betwixt the magnet and the metal), since even a tiny distance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
  • Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Steel thickness – insufficiently thick plate causes magnetic saturation, causing part of the power to be lost to the other side.
  • Steel grade – the best choice is high-permeability steel. Stainless steels may attract less.
  • Surface finish – full contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
  • Heat – neodymium magnets 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).

Lifting capacity was determined using a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, however under shearing force the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.

Precautions when working with neodymium magnets
No play value

These products are not suitable for play. Swallowing multiple magnets can lead to them connecting inside the digestive tract, which constitutes a severe health hazard and necessitates immediate surgery.

Do not overheat magnets

Regular neodymium magnets (N-type) lose power when the temperature goes above 80°C. Damage is permanent.

Health Danger

Health Alert: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.

Crushing risk

Pinching hazard: The attraction force is so immense that it can result in hematomas, crushing, and even bone fractures. Use thick gloves.

Metal Allergy

Some people suffer from a sensitization to nickel, which is the common plating for NdFeB magnets. Extended handling might lead to an allergic reaction. We suggest use protective gloves.

Compass and GPS

GPS units and smartphones are highly susceptible to magnetic fields. Direct contact with a strong magnet can permanently damage the sensors in your phone.

Material brittleness

Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. We recommend safety glasses.

Magnetic media

Equipment safety: Neodymium magnets can damage data carriers and sensitive devices (heart implants, medical aids, timepieces).

Respect the power

Handle magnets consciously. Their immense force can shock even professionals. Plan your moves and respect their power.

Flammability

Powder created during grinding of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Danger! 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