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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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Force and shape of a neodymium magnet can be verified with our modular calculator.

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Detailed specification - 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%
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: 130460-2026
Measurement Calculator
Force (pull)

Magnetic Induction

Other products

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. 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 filings stick to the surface very strongly, so cleaning requires strength or cleverness. The most effective home method is using adhesive tape, which we wrap around the dirt and peel off. 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. For the food and precision industry, we recommend the highest induction parameters.
We fulfill individual orders for bars perfectly matched to your machine or separator. You can choose a mounting method consistent with your technical design. Contact us for a quote on a non-standard dimension.

Strengths and weaknesses of rare earth magnets.

Pros

Apart from their superior power, neodymium magnets have these key benefits:
  • Their magnetic field is maintained, and after around 10 years it drops only by ~1% (according to research),
  • They are resistant to demagnetization induced by external disturbances,
  • The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • Magnetic induction on the top side of the magnet turns out to be strong,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to flexibility in constructing and the capacity to customize to complex applications,
  • Versatile presence in advanced technology sectors – they are commonly used in magnetic memories, electric drive systems, medical devices, as well as multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which allows their use in compact constructions

Limitations

Disadvantages of neodymium magnets:
  • At strong impacts they can crack, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • We suggest a housing - magnetic holder, due to difficulties in realizing nuts inside the magnet and complicated shapes.
  • Possible danger resulting from small fragments of magnets pose a threat, in case of ingestion, which gains importance in the context of child health protection. It is also worth noting that small elements of these magnets are able to complicate diagnosis medical after entering the body.
  • Due to neodymium price, their price exceeds standard values,

Holding force characteristics

Maximum holding power of the magnet – what it depends on?

The load parameter shown represents the maximum value, obtained under laboratory conditions, meaning:
  • using a sheet made of mild steel, serving as a circuit closing element
  • whose thickness equals approx. 10 mm
  • with an ground touching surface
  • under conditions of ideal adhesion (metal-to-metal)
  • under axial force direction (90-degree angle)
  • at temperature approx. 20 degrees Celsius

Determinants of lifting force in real conditions

Effective lifting capacity impacted by specific conditions, mainly (from priority):
  • Distance – existence of any layer (paint, tape, air) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
  • Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
  • Plate material – mild steel attracts best. Higher carbon content reduce magnetic permeability and holding force.
  • Surface condition – smooth surfaces ensure maximum contact, which increases force. Rough surfaces weaken the grip.
  • Thermal factor – high temperature reduces pulling force. Too high temperature can permanently damage the magnet.

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, whereas under shearing force the load capacity is reduced by as much as 75%. In addition, even a minimal clearance between the magnet and the plate lowers the holding force.

Precautions when working with neodymium magnets
Physical harm

Watch your fingers. Two powerful magnets will snap together immediately with a force of several hundred kilograms, destroying anything in their path. Be careful!

Risk of cracking

Protect your eyes. Magnets can explode upon violent connection, launching shards into the air. Wear goggles.

ICD Warning

Medical warning: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.

Machining danger

Machining of NdFeB material carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Handling rules

Before starting, check safety instructions. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.

Impact on smartphones

Remember: neodymium magnets produce a field that confuses precision electronics. Maintain a separation from your mobile, device, and GPS.

Threat to electronics

Powerful magnetic fields can corrupt files on payment cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.

Warning for allergy sufferers

It is widely known that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, refrain from touching magnets with bare hands and choose encased magnets.

Maximum temperature

Control the heat. Exposing the magnet to high heat will destroy its magnetic structure and strength.

No play value

Neodymium magnets are not suitable for play. Accidental ingestion of a few magnets can lead to them pinching intestinal walls, which poses a direct threat to life and requires immediate surgery.

Warning! Learn more about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98