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SM 25x100 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130287

GTIN/EAN: 5906301812807

5.00

Diameter Ø

25 mm [±1 mm]

Height

100 mm [±1 mm]

Weight

0.01 g

Magnetic Flux

~ 6 500 Gauss [±5%]

246.00 with VAT / pcs + price for transport

200.00 ZŁ net + 23% VAT / pcs

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Technical of the product - SM 25x100 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 25x100 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130287
GTIN/EAN 5906301812807
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 ~ 6 500 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 3 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 25x100 [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
Engineering data and GPSR
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%
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: 130287-2025
Measurement Calculator
Force (pull)

Magnetic Induction

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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. High magnetic induction on the surface allows catching the finest iron particles.
The outer layer is hygienic acid-resistant steel, approved for food contact. Inside there is a stack of strong neodymium magnets arranged in a special configuration (magnetic circuit). 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. 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 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.
We fulfill individual orders for bars perfectly matched to your machine or separator. 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 neodymium magnets.

Pros

Besides their high retention, neodymium magnets are valued for these benefits:
  • They retain full power for around 10 years – the loss is just ~1% (based on simulations),
  • They retain their magnetic properties even under external field action,
  • Thanks to the glossy finish, the layer of Ni-Cu-Ni, gold-plated, or silver gives an professional appearance,
  • Magnetic induction on the surface of the magnet turns out to be impressive,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Possibility of precise machining as well as modifying to specific requirements,
  • Huge importance in advanced technology sectors – they are commonly used in computer drives, electromotive mechanisms, precision medical tools, also industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which makes them useful in compact constructions

Cons

Disadvantages of neodymium magnets:
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • Due to limitations in creating nuts and complicated forms in magnets, we propose using cover - magnetic mount.
  • Possible danger related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that small elements of these products are able to be problematic in diagnostics medical after entering the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Lifting parameters

Magnetic strength at its maximum – what affects it?

Information about lifting capacity was defined for ideal contact conditions, assuming:
  • with the use of a sheet made of special test steel, guaranteeing maximum field concentration
  • with a thickness minimum 10 mm
  • characterized by smoothness
  • without the slightest insulating layer between the magnet and steel
  • for force applied at a right angle (pull-off, not shear)
  • at temperature approx. 20 degrees Celsius

What influences lifting capacity in practice

Please note that the application force will differ influenced by the following factors, starting with the most relevant:
  • Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
  • Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the maximum value.
  • Base massiveness – too thin plate causes magnetic saturation, causing part of the flux to be wasted into the air.
  • Metal type – not every steel attracts identically. Alloy additives worsen the interaction with the magnet.
  • Plate texture – smooth surfaces guarantee perfect abutment, which increases force. Rough surfaces reduce efficiency.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, 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 optimal thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the load capacity is reduced by as much as 75%. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.

Warnings
Warning for heart patients

Life threat: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Conscious usage

Handle magnets consciously. Their huge power can surprise even experienced users. Plan your moves and respect their power.

Threat to electronics

Avoid bringing magnets near a wallet, computer, or screen. The magnetism can destroy these devices and wipe information from cards.

Phone sensors

GPS units and smartphones are extremely susceptible to magnetism. Direct contact with a strong magnet can decalibrate the internal compass in your phone.

Product not for children

Always store magnets away from children. Choking hazard is significant, and the effects of magnets connecting inside the body are tragic.

Nickel coating and allergies

It is widely known that nickel (the usual finish) is a potent allergen. If your skin reacts to metals, prevent direct skin contact or opt for versions in plastic housing.

Hand protection

Protect your hands. Two large magnets will snap together instantly with a force of massive weight, crushing everything in their path. Be careful!

Machining danger

Dust produced during machining of magnets is flammable. Do not drill into magnets unless you are an expert.

Magnets are brittle

Despite the nickel coating, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Heat sensitivity

Standard neodymium magnets (N-type) lose magnetization when the temperature exceeds 80°C. This process is irreversible.

Important! Details about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98