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SM 32x150 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130297

GTIN/EAN: 5906301812906

5.00

Diameter Ø

32 mm [±1 mm]

Height

150 mm [±1 mm]

Weight

804 g

Magnetic Flux

~ 8 000 Gauss [±5%]

455.10 with VAT / pcs + price for transport

370.00 ZŁ net + 23% VAT / pcs

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Product card - SM 32x150 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 32x150 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130297
GTIN/EAN 5906301812906
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 150 mm [±1 mm]
Weight 804 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 000 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 32x150 [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
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%
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: 130297-2025
Measurement Calculator
Magnet pull force

Field Strength

Other proposals

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. 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). Such construction ensures full resistance to corrosion, water, oils, and acids.
Metal contaminants are strongly attracted, so removing them with a bare hand or glove can be difficult. 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. The economical version (8kGs) handles large pieces of metal perfectly. For the food and precision industry, we recommend the highest induction parameters.
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. We ensure fast realization of special orders and technical advice.

Strengths and weaknesses of neodymium magnets.

Strengths

Besides their high retention, neodymium magnets are valued for these benefits:
  • They have stable power, and over nearly ten years their performance decreases symbolically – ~1% (in testing),
  • Neodymium magnets remain extremely resistant to magnetic field loss caused by external field sources,
  • In other words, due to the metallic finish of silver, the element becomes visually attractive,
  • The surface of neodymium magnets generates a unique magnetic field – this is one of their assets,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures approaching 230°C and above...
  • Thanks to flexibility in shaping and the capacity to modify to individual projects,
  • Fundamental importance in electronics industry – they are utilized in magnetic memories, drive modules, advanced medical instruments, and modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in small systems

Disadvantages

Disadvantages of NdFeB magnets:
  • To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (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 very resistant to heat
  • They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • We recommend cover - magnetic mount, due to difficulties in realizing threads inside the magnet and complicated shapes.
  • Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the context of child safety. It is also worth noting that small components of these magnets can complicate diagnosis medical in case of swallowing.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Magnetic strength at its maximum – what it depends on?

Magnet power was defined for optimal configuration, assuming:
  • using a plate made of low-carbon steel, functioning as a magnetic yoke
  • possessing a massiveness of at least 10 mm to ensure full flux closure
  • characterized by smoothness
  • under conditions of ideal adhesion (metal-to-metal)
  • under axial force direction (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

What influences lifting capacity in practice

During everyday use, the real power results from many variables, presented from the most important:
  • Gap between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, 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 passes through the material instead of converting into lifting capacity.
  • Material type – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
  • Plate texture – ground elements guarantee perfect abutment, which increases force. Uneven metal weaken the grip.
  • Operating temperature – neodymium magnets 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 assessed by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, however under parallel forces the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

Warnings
Powerful field

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

Combustion hazard

Fire hazard: Rare earth powder is explosive. Do not process magnets without safety gear as this risks ignition.

Adults only

Adult use only. Tiny parts can be swallowed, leading to intestinal necrosis. Store away from children and animals.

Nickel coating and allergies

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If an allergic reaction occurs, cease handling magnets and wear gloves.

Thermal limits

Do not overheat. NdFeB magnets are susceptible to temperature. If you need resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

Pacemakers

Medical warning: Neodymium magnets can deactivate pacemakers and defibrillators. Do not approach if you have electronic implants.

Eye protection

Protect your eyes. Magnets can explode upon violent connection, launching shards into the air. We recommend safety glasses.

Compass and GPS

Be aware: rare earth magnets generate a field that confuses precision electronics. Keep a separation from your mobile, tablet, and navigation systems.

Pinching danger

Big blocks can smash fingers instantly. Do not put your hand between two attracting surfaces.

Safe distance

Powerful magnetic fields can destroy records on payment cards, HDDs, and other magnetic media. Keep a distance of at least 10 cm.

Danger! Need more info? Read our article: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98