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SM 32x375 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130379

GTIN/EAN: 5906301813279

Diameter Ø

32 mm [±1 mm]

Height

375 mm [±1 mm]

Weight

2010 g

Magnetic Flux

~ 8 000 Gauss [±5%]

1119.30 with VAT / pcs + price for transport

910.00 ZŁ net + 23% VAT / pcs

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Lifting power as well as appearance of a neodymium magnet can be reviewed on our magnetic calculator.

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Technical - SM 32x375 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 32x375 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130379
GTIN/EAN 5906301813279
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 375 mm [±1 mm]
Weight 2010 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 14 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 32x375 [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 32x375 [2xM8] / N42

Parameter Value Description / Unit
Diameter (Ø) 25 mm
Total Length 150 mm (L)
Active Length 114 mm
Dead Zone 36 mm (2x 18mm Starter)
Weight (Est.) ~560 g
Active Area 90 cm² (Area)
Housing Material AISI 304 1.4301 (Inox)
Surface Finish Ra < 0.8 µm Polished
Max. Temperature ≤ 80°C Standard
Force (Calculated) 10.6 kg (Theor.)
Induction (Surface) ~6 500 Gauss (Max)

Chart 2: Magnetic Field Profile

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%
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: 130379-2025
Quick Unit Converter
Force (pull)

Magnetic Field

Other offers

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. 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. 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. For easier operation, it is worth considering ordering a rod in a version with a cleaning sleeve.
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 induction is necessary when contaminants are microscopic or weakly magnetic.
We fulfill individual orders for bars perfectly matched to your machine or separator. We offer various tip options: threaded holes (e.g., M8, M10), protruding screws, flat pivots, mills, or handles. Contact us for a quote on a non-standard dimension.

Advantages and disadvantages of Nd2Fe14B magnets.

Pros

Apart from their strong holding force, neodymium magnets have these key benefits:
  • Their power is durable, and after approximately 10 years it decreases only by ~1% (according to research),
  • They possess excellent resistance to magnetic field loss as a result of opposing magnetic fields,
  • The use of an elegant layer of noble metals (nickel, gold, silver) causes the element to present itself better,
  • The surface of neodymium magnets generates a powerful magnetic field – this is a key feature,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Thanks to freedom in shaping and the ability to customize to individual projects,
  • Versatile presence in future technologies – they find application in magnetic memories, motor assemblies, diagnostic systems, also multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in small systems

Disadvantages

What to avoid - cons of neodymium magnets and ways of using them
  • They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as 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 advise using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • Due to limitations in producing threads and complex shapes in magnets, we recommend using casing - magnetic mechanism.
  • Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that small components of these devices are able to be problematic in diagnostics medical after entering the body.
  • With mass production the cost of neodymium magnets is a challenge,

Holding force characteristics

Detachment force of the magnet in optimal conditionswhat it depends on?

The declared magnet strength refers to the maximum value, recorded under laboratory conditions, specifically:
  • using a base made of low-carbon steel, serving as a circuit closing element
  • whose transverse dimension reaches at least 10 mm
  • with an polished touching surface
  • without any air gap between the magnet and steel
  • for force acting at a right angle (in the magnet axis)
  • at temperature approx. 20 degrees Celsius

Determinants of practical lifting force of a magnet

Please note that the magnet holding may be lower subject to the following factors, starting with the most relevant:
  • Distance – existence of any layer (paint, tape, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
  • Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of nominal force).
  • Base massiveness – too thin steel causes magnetic saturation, causing part of the power to be wasted into the air.
  • Material type – ideal substrate is pure iron steel. Hardened steels may generate lower lifting capacity.
  • Plate texture – smooth surfaces ensure maximum contact, which improves force. Rough surfaces weaken the grip.
  • Temperature – heating the magnet causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, whereas under parallel forces the lifting capacity is smaller. Moreover, even a small distance between the magnet and the plate lowers the load capacity.

Warnings
Choking Hazard

These products are not intended for children. Eating several magnets may result in them attracting across intestines, which poses a severe health hazard and requires urgent medical intervention.

ICD Warning

Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.

Crushing risk

Danger of trauma: The pulling power is so great that it can cause hematomas, crushing, and even bone fractures. Protective gloves are recommended.

Metal Allergy

A percentage of the population experience a sensitization to nickel, which is the standard coating for neodymium magnets. Prolonged contact may cause a rash. We suggest wear safety gloves.

Do not overheat magnets

Control the heat. Exposing the magnet above 80 degrees Celsius will ruin its properties and strength.

Precision electronics

An intense magnetic field interferes with the operation of magnetometers in phones and navigation systems. Do not bring magnets near a device to prevent breaking the sensors.

Respect the power

Be careful. Rare earth magnets act from a long distance and connect with massive power, often quicker than you can react.

Magnetic media

Intense magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Keep a distance of at least 10 cm.

Eye protection

Despite metallic appearance, the material is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Fire warning

Powder created during machining of magnets is combustible. Do not drill into magnets unless you are an expert.

Caution! Details 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