tel: +48 888 99 98 98

Strong neodymium magnets: discs and cylinders

Need reliable magnetic field? We offer rich assortment of various shapes and sizes. Best choice for home use, workshop and model making. See products available immediately.

check full offer

Magnet fishing sets (searchers)

Begin your hobby related to seabed exploration! Our specialized grips (F200, F400) provide grip certainty and huge lifting capacity. Stainless steel construction and reinforced ropes will perform in rivers and lakes.

find searching equipment

Magnetic mounting systems

Proven solutions for fixing without drilling. Threaded mounts (external or internal) provide instant organization of work on warehouses. They are indispensable mounting lamps, sensors and banners.

see available threads

🚚 Order by 14:00 – we'll ship same day!

Dhit sp. z o.o.
Product available Ships tomorrow

SM 32x100 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130296

GTIN/EAN: 5906301812890

Diameter Ø

32 mm [±1 mm]

Height

100 mm [±1 mm]

Weight

536 g

Magnetic Flux

~ 8 000 Gauss [±5%]

307.50 with VAT / pcs + price for transport

250.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
250.00 ZŁ
307.50 ZŁ
price from 10 pcs
237.50 ZŁ
292.13 ZŁ
price from 20 pcs
225.00 ZŁ
276.75 ZŁ
Want to negotiate?

Give us a call +48 888 99 98 98 if you prefer contact us by means of inquiry form through our site.
Parameters as well as shape of a magnet can be tested with our magnetic calculator.

Orders submitted before 14:00 will be dispatched today!

Technical - SM 32x100 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 32x100 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130296
GTIN/EAN 5906301812890
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 100 mm [±1 mm]
Weight 536 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 3 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 32x100 [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
Engineering data and GPSR
Chemical composition
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: 130296-2025
Quick Unit Converter
Pulling force

Magnetic Field

Check out more offers

This product serves to effectively catch ferromagnetic contaminants from bulk and liquid products. 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 construction relies on a sealed, welded stainless steel housing, polished smooth. 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.
The Gauss value tells us how effectively and deeply the magnet will catch contaminants. For basic machine protection against pieces of iron, standard power is sufficient. High Power versions (~12000-14000 Gs) are necessary for catching metallic dust, oxides, and stainless steel after processing.
Yes, as a manufacturer, we make rods of any length and diameter (standard is dia 25mm and 32mm). The rod end is strictly adapted to the fastening system in your device. Contact us for a quote on a non-standard dimension.

Advantages as well as disadvantages of neodymium magnets.

Strengths

Besides their stability, neodymium magnets are valued for these benefits:
  • They have unchanged lifting capacity, and over more than 10 years their performance decreases symbolically – ~1% (in testing),
  • Magnets very well defend themselves against loss of magnetization caused by foreign field sources,
  • A magnet with a metallic silver surface has an effective appearance,
  • Magnets have extremely high magnetic induction on the outer layer,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Possibility of accurate modeling and optimizing to defined applications,
  • Versatile presence in high-tech industry – they are used in HDD drives, motor assemblies, advanced medical instruments, and other advanced devices.
  • Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Limitations

Problematic aspects of neodymium magnets and ways of using them
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a special holder, which not only protects them against impacts but also increases their durability
  • Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
  • Limited ability of making threads in the magnet and complicated shapes - preferred is cover - mounting mechanism.
  • Health risk to health – tiny shards of magnets are risky, in case of ingestion, which gains importance in the context of child safety. Furthermore, small components of these magnets can be problematic in diagnostics medical when they are in the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Maximum holding power of the magnet – what contributes to it?

The load parameter shown represents the limit force, obtained under laboratory conditions, meaning:
  • with the contact of a sheet made of special test steel, guaranteeing maximum field concentration
  • whose thickness equals approx. 10 mm
  • with an ground touching surface
  • without any insulating layer between the magnet and steel
  • during pulling in a direction vertical to the plane
  • at standard ambient temperature

Determinants of lifting force in real conditions

Bear in mind that the application force may be lower subject to elements below, in order of importance:
  • Air gap (betwixt the magnet and the plate), because even a microscopic clearance (e.g. 0.5 mm) results in a reduction in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of nominal force).
  • Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
  • Metal type – different alloys attracts identically. High carbon content weaken the interaction with the magnet.
  • Plate texture – smooth surfaces guarantee perfect abutment, which increases force. Rough surfaces reduce efficiency.
  • Heat – NdFeB sinters have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was measured by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.

Safe handling of NdFeB magnets
Sensitization to coating

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction occurs, immediately stop working with magnets and use protective gear.

Implant safety

People with a heart stimulator should keep an absolute distance from magnets. The magnetic field can stop the operation of the implant.

Impact on smartphones

A strong magnetic field negatively affects the operation of magnetometers in phones and GPS navigation. Do not bring magnets close to a device to avoid breaking the sensors.

Crushing force

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

Protect data

Intense magnetic fields can corrupt files on payment cards, HDDs, and storage devices. Stay away of min. 10 cm.

Do not drill into magnets

Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this risks ignition.

Do not underestimate power

Handle magnets consciously. Their powerful strength can surprise even professionals. Be vigilant and respect their power.

Beware of splinters

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

Swallowing risk

Absolutely keep magnets out of reach of children. Ingestion danger is high, and the effects of magnets clamping inside the body are life-threatening.

Power loss in heat

Avoid heat. Neodymium magnets are sensitive to heat. If you require operation above 80°C, ask us about HT versions (H, SH, UH).

Security! Details about hazards in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98