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SM 25x100 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130366

GTIN/EAN: 5906301813149

5.00

Diameter Ø

25 mm [±1 mm]

Height

100 mm [±1 mm]

Weight

0.01 g

Magnetic Flux

~ 9 500 Gauss [±5%]

319.80 with VAT / pcs + price for transport

260.00 ZŁ net + 23% VAT / pcs

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SM 25x100 [2xM8] / N52 - magnetic separator

Specification / characteristics SM 25x100 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130366
GTIN/EAN 5906301813149
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 25 mm [±1 mm]
Height 100 mm [±1 mm]
Weight 0.01 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 9 500 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 3 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 25x100 [2xM8] / N52 - magnetic separator
properties values units
remenance Br [min. - max.] ? 14.2-14.7 kGs
remenance Br [min. - max.] ? 1420-1470 mT
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 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
Elemental analysis
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%
Ecology and recycling (GPSR)
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: 130366-2025
Magnet Unit Converter
Force (pull)

Field Strength

Other offers

This product serves to effectively catch ferromagnetic contaminants from bulk and liquid products. 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 outer layer is hygienic acid-resistant steel, approved for food contact. 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 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 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 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. We ensure fast realization of special orders and technical advice.

Advantages and disadvantages of neodymium magnets.

Advantages
Apart from their notable holding force, neodymium magnets have these key benefits:
  • Their power is maintained, and after approximately ten years it drops only by ~1% (according to research),
  • They are extremely resistant to demagnetization induced by external disturbances,
  • In other words, due to the smooth surface of gold, the element looks attractive,
  • Magnets are distinguished by impressive magnetic induction on the surface,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Possibility of precise modeling as well as optimizing to individual applications,
  • Significant place in modern technologies – they are utilized in HDD drives, drive modules, medical equipment, also modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which makes them useful in compact constructions
Disadvantages
Disadvantages of NdFeB magnets:
  • At strong impacts they can crack, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • Limited ability of making threads in the magnet and complex shapes - recommended is cover - mounting mechanism.
  • Health risk related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these products can be problematic in diagnostics medical in case of swallowing.
  • 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

Holding force characteristics

Maximum magnetic pulling forcewhat contributes to it?
Magnet power was determined for ideal contact conditions, including:
  • on a base made of structural steel, optimally conducting the magnetic field
  • whose thickness equals approx. 10 mm
  • characterized by even structure
  • under conditions of no distance (surface-to-surface)
  • during detachment in a direction vertical to the mounting surface
  • in stable room temperature
What influences lifting capacity in practice
Bear in mind that the magnet holding may be lower subject to elements below, starting with the most relevant:
  • Distance (between the magnet and the metal), since even a very small clearance (e.g. 0.5 mm) results in a reduction in force by up to 50% (this also applies to varnish, corrosion or debris).
  • Force direction – catalog parameter refers to pulling vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
  • Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of generating force.
  • Steel type – mild steel attracts best. Higher carbon content decrease magnetic properties and holding force.
  • Surface structure – the more even the surface, the better the adhesion and stronger the hold. Unevenness creates an air distance.
  • Heat – NdFeB sinters have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

Safe handling of NdFeB magnets
Beware of splinters

NdFeB magnets are ceramic materials, which means they are very brittle. Collision of two magnets leads to them breaking into small pieces.

Warning for allergy sufferers

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If skin irritation appears, cease handling magnets and wear gloves.

Keep away from children

Always store magnets away from children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are fatal.

Implant safety

Individuals with a heart stimulator should maintain an large gap from magnets. The magnetism can stop the operation of the life-saving device.

Heat sensitivity

Standard neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. This process is irreversible.

Threat to navigation

Remember: neodymium magnets generate a field that disrupts precision electronics. Maintain a separation from your phone, tablet, and GPS.

Machining danger

Combustion risk: Rare earth powder is highly flammable. Do not process magnets in home conditions as this risks ignition.

Hand protection

Pinching hazard: The pulling power is so great that it can result in blood blisters, crushing, and even bone fractures. Protective gloves are recommended.

Immense force

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

Cards and drives

Data protection: Strong magnets can damage payment cards and delicate electronics (pacemakers, hearing aids, timepieces).

Caution! More info 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