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SM 32x450 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130303

GTIN/EAN: 5906301812968

5.00
Diameter Ø
32 mm [±1 mm]
Height
450 mm [±1 mm]
Weight
2410 g
Magnetic Flux
~ 8 000 Gauss [±5%]

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Physical properties - SM 32x450 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 32x450 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130303
GTIN/EAN 5906301812968
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 450 mm [±1 mm]
Weight 2410 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 17 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 32x450 [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 32x450 [2xM8] / N42

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 450 mm (L)
Active length 414 mm
Section count 18 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~2751 g
Active area 416 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 (18 sections)

Chart 3: Temperature performance

Technical and environmental data

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%

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: 130303-2026
Magnet Unit Converter

Force (pull)


Magnetic Induction

View also products

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 rod consists of a cover tube made of high-quality acid-resistant steel (AISI 304 or 316). 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.
Metal filings stick to the surface very strongly, so cleaning requires strength or cleverness. 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.
Magnetic induction measured in Gauss (Gs) determines the density of magnetic flux on the rod surface. 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. The rod end is strictly adapted to the fastening system in your device. Contact us for a quote on a non-standard dimension.

Pros and cons of Nd2Fe14B magnets.

Advantages

Besides their tremendous strength, neodymium magnets offer the following advantages:
  • They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (in laboratory conditions),
  • Neodymium magnets prove to be extremely resistant to loss of magnetic properties caused by external field sources,
  • The use of an shiny coating of noble metals (nickel, gold, silver) causes the element to present itself better,
  • Magnets are characterized by maximum magnetic induction on the working surface,
  • 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 designing and the ability to customize to specific needs,
  • Fundamental importance in future technologies – they are utilized in data components, motor assemblies, medical devices, also other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which allows their use in compact constructions

Limitations

Cons of neodymium magnets and proposals for their use:
  • Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also raises their durability
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (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 suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • Limited ability of creating nuts in the magnet and complex forms - recommended is a housing - magnet mounting.
  • Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which gains importance in the context of child safety. Furthermore, tiny parts of these devices are able to disrupt the diagnostic process medical in case of swallowing.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

Maximum magnetic pulling forcewhat affects it?

Magnet power is the result of a measurement for optimal configuration, including:
  • with the contact of a sheet made of low-carbon steel, guaranteeing maximum field concentration
  • possessing a thickness of at least 10 mm to avoid saturation
  • with a plane free of scratches
  • under conditions of ideal adhesion (surface-to-surface)
  • for force acting at a right angle (in the magnet axis)
  • in neutral thermal conditions

Practical lifting capacity: influencing factors

In practice, the actual lifting capacity depends on several key aspects, ranked from most significant:
  • Clearance – the presence of foreign body (paint, tape, air) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
  • Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
  • Material composition – not every steel reacts the same. Alloy additives weaken the attraction effect.
  • Surface finish – ideal contact is obtained only on smooth steel. Rough texture create air cushions, reducing force.
  • Heat – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under perpendicular forces, however under parallel forces the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate lowers the load capacity.

Warnings
Threat to electronics

Very strong magnetic fields can erase data on credit cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.

Health Danger

Life threat: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Machining danger

Combustion risk: Rare earth powder is explosive. Avoid machining magnets without safety gear as this may cause fire.

Thermal limits

Avoid heat. NdFeB magnets are sensitive to temperature. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Immense force

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

Danger to the youngest

NdFeB magnets are not suitable for play. Accidental ingestion of a few magnets may result in them connecting inside the digestive tract, which constitutes a critical condition and requires immediate surgery.

Avoid contact if allergic

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If redness appears, immediately stop handling magnets and use protective gear.

Keep away from electronics

GPS units and smartphones are highly sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can ruin the sensors in your phone.

Physical harm

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

Risk of cracking

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.

Attention! Learn more about hazards in the article: Magnet Safety Guide.