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SM 32x300 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130459

GTIN/EAN: 5906301813309

Diameter Ø

32 mm [±1 mm]

Height

300 mm [±1 mm]

Weight

1660 g

Magnetic Flux

~ 10 000 Gauss [±5%]

971.70 with VAT / pcs + price for transport

790.00 ZŁ net + 23% VAT / pcs

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Lifting power along with shape of magnets can be estimated on our force calculator.

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Technical parameters - SM 32x300 [2xM8] / N52 - magnetic separator

Specification / characteristics - SM 32x300 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130459
GTIN/EAN 5906301813309
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 300 mm [±1 mm]
Weight 1660 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 11 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x300 [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

Table 1: Rod construction
SM 32x300 [2xM8] / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 300 mm (L)
Active length 264 mm
Section count 11 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~1834 g
Active area 265 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) 41 kg (theor.)
Induction (surface) ~10 000 Gauss (Max)

Chart 2: Field profile (11 sections)

Chart 3: Temperature performance

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%
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: 130459-2026
Measurement Calculator
Pulling force

Magnetic Induction

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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 construction relies on a sealed, welded stainless steel housing, polished smooth. 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.
Due to the high power of the magnet, direct removal of filings can be troublesome and time-consuming. You can use compressed air or special non-magnetic strippers (rings). For easier operation, it is worth considering ordering a rod in a version with a cleaning sleeve.
The Gauss value tells us how effectively and deeply the magnet will catch contaminants. For basic machine protection against pieces of iron, standard power is sufficient. High induction is necessary when contaminants are microscopic or weakly magnetic.
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 rare earth magnets.

Strengths

Apart from their superior magnetic energy, neodymium magnets have these key benefits:
  • They have stable power, and over nearly 10 years their attraction force decreases symbolically – ~1% (according to theory),
  • They retain their magnetic properties even under close interference source,
  • The use of an metallic coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • Magnets have excellent magnetic induction on the surface,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures approaching 230°C and above...
  • Thanks to the potential of precise shaping and adaptation to custom requirements, neodymium magnets can be manufactured in a variety of shapes and sizes, which amplifies use scope,
  • Fundamental importance in high-tech industry – they are utilized in HDD drives, brushless drives, medical equipment, and modern systems.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Disadvantages

Cons of neodymium magnets and ways of using them
  • To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
  • NdFeB magnets lose strength 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 extremely 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, in case of application outdoors
  • Due to limitations in creating nuts and complex forms in magnets, we propose using casing - magnetic mechanism.
  • Potential hazard resulting from small fragments of magnets pose a threat, in case of ingestion, which becomes key in the context of child safety. It is also worth noting that small elements of these magnets are able to disrupt the diagnostic process medical when they are in the body.
  • With large orders the cost of neodymium magnets can be a barrier,

Pull force analysis

Maximum holding power of the magnet – what contributes to it?

Magnet power was determined for optimal configuration, taking into account:
  • on a block made of structural steel, optimally conducting the magnetic flux
  • with a thickness no less than 10 mm
  • with an ideally smooth touching surface
  • without any air gap between the magnet and steel
  • under axial force direction (90-degree angle)
  • at room temperature

What influences lifting capacity in practice

Holding efficiency is affected by working environment parameters, mainly (from priority):
  • Gap (betwixt the magnet and the metal), as even a microscopic clearance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
  • Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Base massiveness – too thin sheet causes magnetic saturation, causing part of the power to be lost to the other side.
  • Plate material – low-carbon steel attracts best. Alloy steels decrease magnetic permeability and holding force.
  • Surface quality – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
  • Thermal conditions – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity was determined by applying a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under attempts to slide the magnet the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.

Safe handling of neodymium magnets
GPS and phone interference

Remember: rare earth magnets produce a field that confuses sensitive sensors. Keep a safe distance from your mobile, tablet, and navigation systems.

Permanent damage

Keep cool. Neodymium magnets are sensitive to temperature. If you need resistance above 80°C, inquire about HT versions (H, SH, UH).

Hand protection

Protect your hands. Two powerful magnets will join immediately with a force of massive weight, destroying anything in their path. Be careful!

Health Danger

For implant holders: Powerful magnets affect electronics. Maintain minimum 30 cm distance or request help to work with the magnets.

Immense force

Handle with care. Neodymium magnets act from a distance and snap with huge force, often faster than you can react.

Product not for children

Adult use only. Small elements pose a choking risk, leading to intestinal necrosis. Keep out of reach of children and animals.

Dust is flammable

Mechanical processing of neodymium magnets carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Risk of cracking

NdFeB magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets will cause them shattering into shards.

Nickel coating and allergies

Studies show that nickel (standard magnet coating) is a strong allergen. If you have an allergy, prevent touching magnets with bare hands or select versions in plastic housing.

Protect data

Avoid bringing magnets near a wallet, laptop, or TV. The magnetic field can destroy these devices and erase data from cards.

Warning! More info about hazards in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98