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neodymium magnets

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SM 32x125 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130357

GTIN/EAN: 5906301813057

Diameter Ø

32 mm [±1 mm]

Height

125 mm [±1 mm]

Weight

690 g

Magnetic Flux

~ 10 000 Gauss [±5%]

455.10 ZŁ with VAT / pcs + price for transport

370.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?
price from 1 pcs
370.00 ZŁ
455.10 ZŁ
price from 10 pcs
351.50 ZŁ
432.34 ZŁ
price from 15 pcs
333.00 ZŁ
409.59 ZŁ
Carbon Footprint – environmental impact GPSR Regulation – product safety
Need help making a decision?

Call us +48 22 499 98 98 or drop us a message via inquiry form our website.
Force as well as shape of a neodymium magnet can be calculated using our magnetic mass calculator.

Orders placed before 14:00 will be shipped the same business day.

SM 32x125 [2xM8] / N52 - magnetic separator

Specification / characteristics SM 32x125 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130357
GTIN/EAN 5906301813057
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 125 mm [±1 mm]
Weight 690 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 4 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x125 [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
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: 130357-2025
Quick Unit Converter
Force (Pull)
Magnetic Induction
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This product serves to effectively catch ferromagnetic contaminants from bulk and liquid products. It is commonly used for cleaning flour, sugar, plastic granules, as well as oils and coolants. 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. 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 contaminants are strongly attracted, so removing them with a bare hand or glove can be difficult. 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.
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. We ensure fast realization of special orders and technical advice.

Strengths and weaknesses of rare earth magnets.

Strengths
Apart from their consistent holding force, neodymium magnets have these key benefits:
  • They do not lose power, even after approximately 10 years – the reduction in power is only ~1% (according to tests),
  • They are extremely resistant to demagnetization induced by external magnetic fields,
  • The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to look better,
  • Neodymium magnets ensure maximum magnetic induction on a their surface, which allows for strong attraction,
  • Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
  • Thanks to the possibility of accurate molding and adaptation to custom requirements, magnetic components can be manufactured in a wide range of shapes and sizes, which increases their versatility,
  • Versatile presence in electronics industry – they are used in data components, electric drive systems, diagnostic systems, and multitasking production systems.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Limitations
Disadvantages of NdFeB magnets:
  • At very strong impacts they can crack, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • We suggest casing - magnetic holder, due to difficulties in creating threads inside the magnet and complicated forms.
  • Health risk resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the context of child health protection. Furthermore, small components of these products can complicate diagnosis medical after entering the body.
  • Due to neodymium price, their price is higher than average,

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what affects it?
The force parameter is a theoretical maximum value conducted under standard conditions:
  • on a base made of mild steel, perfectly concentrating the magnetic flux
  • with a thickness of at least 10 mm
  • with an ideally smooth contact surface
  • without any insulating layer between the magnet and steel
  • for force acting at a right angle (in the magnet axis)
  • at room temperature
Lifting capacity in real conditions – factors
Real force is affected by specific conditions, including (from most important):
  • Air gap (betwixt the magnet and the plate), as even a tiny distance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to paint, corrosion or debris).
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
  • Steel type – mild steel gives the best results. Alloy admixtures lower magnetic properties and holding force.
  • Surface quality – the more even the plate, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
  • Thermal conditions – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and in frost gain strength (up to a certain limit).

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under shearing force the load capacity is reduced by as much as 5 times. Additionally, even a minimal clearance between the magnet and the plate lowers the load capacity.

Safety rules for work with NdFeB magnets
Conscious usage

Handle magnets consciously. Their powerful strength can surprise even experienced users. Stay alert and respect their force.

No play value

Only for adults. Small elements pose a choking risk, leading to serious injuries. Keep away from kids and pets.

Skin irritation risks

Medical facts indicate that nickel (the usual finish) is a strong allergen. If you have an allergy, prevent touching magnets with bare hands and choose versions in plastic housing.

Keep away from computers

Device Safety: Strong magnets can damage payment cards and sensitive devices (heart implants, hearing aids, mechanical watches).

Precision electronics

Navigation devices and smartphones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Warning for heart patients

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

Hand protection

Pinching hazard: The attraction force is so immense that it can result in blood blisters, pinching, and even bone fractures. Protective gloves are recommended.

Thermal limits

Standard neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. The loss of strength is permanent.

Magnets are brittle

Despite the nickel coating, the material is delicate and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Machining danger

Powder produced during grinding of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Danger! Looking for details? Read our article: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98