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SM 32x100 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130296

GTIN/EAN: 5906301812890

Diameter Ø

32 mm [±1 mm]

Height

100 mm [±1 mm]

Weight

536 g

Magnetic Flux

~ 8 000 Gauss [±5%]

307.50 with VAT / pcs + price for transport

250.00 ZŁ net + 23% VAT / pcs

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Force as well as form of a neodymium magnet can be estimated on our our magnetic calculator.

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Technical - SM 32x100 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 32x100 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130296
GTIN/EAN 5906301812890
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 100 mm [±1 mm]
Weight 536 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 000 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 32x100 [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

Table 1: Rod construction
SM 32x100 [2xM8] / N42

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 100 mm (L)
Active length 64 mm
Section count 2 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~611 g
Active area 64 cm² (Area)
Housing material AISI 304 1.4301 (Inox)
Surface finish Ra < 0.8 µm Polished
Temp. class 80°C Standard (N)
Force loss (at max °C) -12.8% Reversible loss (physics)
Force (calculated) 26.2 kg (theor.)
Induction (surface) ~8 000 Gauss (Max)

Chart 2: Field profile (2 sections)

Chart 3: Temperature performance

Engineering data and GPSR
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%
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: 130296-2026
Magnet Unit Converter
Pulling force

Magnetic Field

Other offers

A magnetic rod is the basic element of building grate separators and magnetic filters. Its task is separation (separation) of metal filings from the transported material. 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). 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. 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 more Gauss, the smaller and more weakly magnetic particles will be effectively caught. For basic machine protection against pieces of iron, standard power is sufficient. 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. 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 do not lose magnetism, even over approximately ten years – the reduction in lifting capacity is only ~1% (theoretically),
  • Neodymium magnets are characterized by extremely resistant to magnetic field loss caused by external magnetic fields,
  • A magnet with a smooth nickel surface looks better,
  • Magnets are characterized by very high magnetic induction on the outer layer,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
  • Thanks to modularity in shaping and the capacity to adapt to specific needs,
  • Fundamental importance in advanced technology sectors – they find application in mass storage devices, electric motors, advanced medical instruments, and industrial machines.
  • Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Disadvantages

Characteristics of disadvantages of neodymium magnets and proposals for their use:
  • 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 increases its resistance to damage
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in producing nuts and complex shapes in magnets, we recommend using cover - magnetic mechanism.
  • Potential hazard to health – tiny shards of magnets can be dangerous, in case of ingestion, which becomes key in the aspect of protecting the youngest. Additionally, tiny parts of these devices are able to complicate diagnosis medical after entering the body.
  • With large orders the cost of neodymium magnets can be a barrier,

Holding force characteristics

Breakaway strength of the magnet in ideal conditionswhat it depends on?

The lifting capacity listed is a measurement result executed under standard conditions:
  • using a sheet made of low-carbon steel, acting as a ideal flux conductor
  • possessing a massiveness of min. 10 mm to ensure full flux closure
  • with a surface cleaned and smooth
  • without any clearance between the magnet and steel
  • under perpendicular application of breakaway force (90-degree angle)
  • at conditions approx. 20°C

Determinants of practical lifting force of a magnet

In practice, the actual holding force depends on several key aspects, ranked from the most important:
  • Distance – existence of foreign body (paint, dirt, gap) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
  • Load vector – maximum parameter is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the plate 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 restricts the attraction force (the magnet "punches through" it).
  • Steel grade – the best choice is pure iron steel. Cast iron may have worse magnetic properties.
  • Surface finish – full contact is obtained only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Thermal environment – heating the magnet results in weakening of induction. Check the thermal limit for a given model.

Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under parallel forces the holding force is lower. In addition, even a slight gap between the magnet and the plate decreases the lifting capacity.

Precautions when working with NdFeB magnets
Metal Allergy

It is widely known that nickel (standard magnet coating) is a common allergen. If your skin reacts to metals, prevent direct skin contact and opt for versions in plastic housing.

Electronic devices

Device Safety: Neodymium magnets can ruin payment cards and sensitive devices (pacemakers, hearing aids, mechanical watches).

GPS and phone interference

A strong magnetic field negatively affects the functioning of compasses in smartphones and navigation systems. Do not bring magnets near a device to avoid breaking the sensors.

Permanent damage

Keep cool. Neodymium magnets are sensitive to heat. If you need resistance above 80°C, ask us about special high-temperature series (H, SH, UH).

Bone fractures

Big blocks can crush fingers instantly. Under no circumstances put your hand betwixt two strong magnets.

Beware of splinters

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Collision of two magnets will cause them breaking into shards.

Danger to the youngest

Always keep magnets out of reach of children. Risk of swallowing is high, and the effects of magnets connecting inside the body are fatal.

ICD Warning

Health Alert: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Handling rules

Use magnets with awareness. Their immense force can shock even experienced users. Be vigilant and do not underestimate their power.

Combustion hazard

Powder generated during machining of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Security! Learn more about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98