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SM 32x325 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130460

GTIN/EAN: 5906301813316

Diameter Ø

32 mm [±1 mm]

Height

325 mm [±1 mm]

Weight

1800 g

Magnetic Flux

~ 10 000 Gauss [±5%]

1045.50 with VAT / pcs + price for transport

850.00 ZŁ net + 23% VAT / pcs

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Technical data - SM 32x325 [2xM8] / N52 - magnetic separator

Specification / characteristics - SM 32x325 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130460
GTIN/EAN 5906301813316
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 325 mm [±1 mm]
Weight 1800 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 12 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x325 [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 32x325 [2xM8] / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 325 mm (L)
Active length 289 mm
Section count 12 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~1986 g
Active area 291 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 (12 sections)

Chart 3: Temperature performance

Technical specification and ecology
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%
Environmental data
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: 130460-2026
Magnet Unit Converter
Magnet pull force

Magnetic Field

Other products

A magnetic rod is the basic element of building grate separators and magnetic filters. It is commonly used for cleaning flour, sugar, plastic granules, as well as oils and coolants. High magnetic induction on the surface allows catching the finest iron particles.
The rod consists of a cover tube made of high-quality acid-resistant steel (AISI 304 or 316). The core is a precise magnetic system generating high induction (Gauss). 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. 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. Standard rods (~8000 Gs) are sufficient for catching screws, nails, and steel shavings. High Power versions (~12000-14000 Gs) are necessary for catching metallic dust, oxides, and stainless steel after processing.
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 as well as disadvantages of rare earth magnets.

Strengths

Besides their immense pulling force, neodymium magnets offer the following advantages:
  • They do not lose strength, even over around ten years – the decrease in strength is only ~1% (based on measurements),
  • They maintain their magnetic properties even under close interference source,
  • In other words, due to the smooth surface of silver, the element is aesthetically pleasing,
  • Magnetic induction on the top side of the magnet turns out to be exceptional,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
  • In view of the possibility of precise forming and adaptation to individualized needs, magnetic components can be modeled in a variety of forms and dimensions, which makes them more universal,
  • Wide application in future technologies – they are utilized in mass storage devices, electric drive systems, diagnostic systems, also modern systems.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:
  • They are fragile upon too strong 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
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise 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 water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in creating nuts and complicated shapes in magnets, we recommend using cover - magnetic mechanism.
  • Potential hazard to health – tiny shards of magnets are risky, if swallowed, which becomes key in the context of child health protection. Additionally, tiny parts of these devices can be problematic in diagnostics medical in case of swallowing.
  • Due to neodymium price, their price is relatively high,

Lifting parameters

Maximum holding power of the magnet – what affects it?

Information about lifting capacity is the result of a measurement for optimal configuration, assuming:
  • on a base made of mild steel, perfectly concentrating the magnetic flux
  • whose thickness equals approx. 10 mm
  • with a surface cleaned and smooth
  • with total lack of distance (no paint)
  • for force applied at a right angle (in the magnet axis)
  • in stable room temperature

Impact of factors on magnetic holding capacity in practice

Real force impacted by specific conditions, such as (from priority):
  • Clearance – the presence of any layer (rust, dirt, gap) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of nominal force).
  • Steel thickness – insufficiently thick steel does not accept the full field, causing part of the power to be escaped into the air.
  • Metal type – not every steel attracts identically. High carbon content weaken the attraction effect.
  • Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate reduces the load capacity.

H&S for magnets
Protective goggles

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

Physical harm

Pinching hazard: The pulling power is so great that it can cause blood blisters, pinching, and broken bones. Protective gloves are recommended.

Handling guide

Before use, check safety instructions. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Do not drill into magnets

Machining of neodymium magnets poses a fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Heat warning

Regular neodymium magnets (grade N) lose magnetization when the temperature exceeds 80°C. This process is irreversible.

Do not give to children

Strictly keep magnets out of reach of children. Choking hazard is significant, and the consequences of magnets clamping inside the body are very dangerous.

Metal Allergy

It is widely known that the nickel plating (standard magnet coating) is a strong allergen. If your skin reacts to metals, prevent direct skin contact and opt for coated magnets.

Impact on smartphones

A strong magnetic field negatively affects the operation of magnetometers in smartphones and navigation systems. Keep magnets close to a smartphone to avoid breaking the sensors.

Medical implants

Life threat: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.

Protect data

Avoid bringing magnets close to a wallet, laptop, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.

Caution! Want to know more? Check our post: Why are neodymium magnets dangerous?