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SM 25x150 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130289

GTIN/EAN: 5906301812821

5.00

Diameter Ø

25 mm [±1 mm]

Height

150 mm [±1 mm]

Weight

0.01 g

Magnetic Flux

~ 6 500 Gauss [±5%]

393.60 with VAT / pcs + price for transport

320.00 ZŁ net + 23% VAT / pcs

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Parameters and structure of a neodymium magnet can be verified on our magnetic calculator.

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Technical of the product - SM 25x150 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 25x150 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130289
GTIN/EAN 5906301812821
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 150 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 - 5 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 25x150 [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
Material specification
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%
Sustainability
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: 130289-2025
Magnet Unit Converter
Force (pull)

Magnetic Induction

See also deals

It is the "heart" of every magnetic filter used in industry for cleaning raw materials. 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 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.
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.
The Gauss value tells us how effectively and deeply the magnet will catch contaminants. The economical version (8kGs) handles large pieces of metal perfectly. For the food and precision industry, we recommend the highest induction parameters.
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. We ensure fast realization of special orders and technical advice.

Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

Apart from their notable power, neodymium magnets have these key benefits:
  • They have stable power, and over more than ten years their attraction force decreases symbolically – ~1% (in testing),
  • They possess excellent resistance to weakening of magnetic properties due to opposing magnetic fields,
  • By covering with a lustrous layer of gold, the element has an modern look,
  • Neodymium magnets create maximum magnetic induction on a small surface, which increases force concentration,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
  • Possibility of detailed modeling and modifying to concrete requirements,
  • Huge importance in high-tech industry – they are used in hard drives, electric drive systems, diagnostic systems, also technologically advanced constructions.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Limitations

Drawbacks and weaknesses of neodymium magnets: tips and applications.
  • Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding 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 stable to moisture, in case of application outdoors
  • Limited possibility of producing nuts in the magnet and complicated forms - preferred is cover - mounting mechanism.
  • Health risk related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the context of child safety. Additionally, small components of these devices are able to disrupt the diagnostic process medical when they are in the body.
  • 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

Lifting parameters

Best holding force of the magnet in ideal parameterswhat contributes to it?

Breakaway force was determined for the most favorable conditions, taking into account:
  • using a sheet made of low-carbon steel, acting as a ideal flux conductor
  • with a cross-section minimum 10 mm
  • characterized by lack of roughness
  • without the slightest insulating layer between the magnet and steel
  • during detachment in a direction perpendicular to the plane
  • in neutral thermal conditions

Lifting capacity in practice – influencing factors

Please note that the working load will differ influenced by the following factors, starting with the most relevant:
  • Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Angle of force application – highest force is obtained only during perpendicular pulling. The shear force of the magnet along the surface is typically many times lower (approx. 1/5 of the lifting capacity).
  • Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Material composition – not every steel reacts the same. High carbon content weaken the interaction with the magnet.
  • Surface condition – ground elements ensure maximum contact, which improves field saturation. Uneven metal reduce efficiency.
  • Thermal conditions – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity was assessed using a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, in contrast 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 reduces the holding force.

H&S for magnets
Pacemakers

Health Alert: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.

Allergic reactions

Some people suffer from a contact allergy to nickel, which is the typical protective layer for neodymium magnets. Extended handling can result in dermatitis. We recommend wear protective gloves.

Crushing force

Large magnets can smash fingers in a fraction of a second. Never place your hand betwixt two attracting surfaces.

Immense force

Use magnets with awareness. Their powerful strength can surprise even experienced users. Stay alert and do not underestimate their power.

GPS and phone interference

Navigation devices and smartphones are extremely susceptible to magnetism. Close proximity with a strong magnet can permanently damage the sensors in your phone.

Fire risk

Combustion risk: Rare earth powder is explosive. Avoid machining magnets without safety gear as this risks ignition.

Danger to the youngest

Adult use only. Small elements can be swallowed, causing serious injuries. Keep out of reach of children and animals.

Shattering risk

NdFeB magnets are ceramic materials, meaning they are fragile like glass. Collision of two magnets leads to them shattering into small pieces.

Do not overheat magnets

Do not overheat. NdFeB magnets are sensitive to heat. If you require operation above 80°C, look for special high-temperature series (H, SH, UH).

Cards and drives

Do not bring magnets close to a purse, computer, or screen. The magnetism can permanently damage these devices and erase data from cards.

Security! 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