Powerful neodymium magnets: discs and cylinders

Want to buy really powerful magnets? We offer complete range of various shapes and sizes. Perfect for for domestic applications, garage and model making. Check our offer available immediately.

discover price list and dimensions

Magnet fishing: solid F200/F400 sets

Begin your hobby related to seabed exploration! Our double-handle grips (F200, F400) provide grip certainty and immense power. Solid, corrosion-resistant housing and strong lines will perform in challenging water conditions.

find your set

Magnetic mounts for industry

Reliable solutions for mounting without drilling. Threaded mounts (M8, M10, M12) guarantee instant organization of work on production halls. Perfect for installing lighting, detectors and banners.

see available threads

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

Dhit sp. z o.o.
Product available Ships today (order by 14:00)

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 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
Hunting for a discount?

Call us now +48 888 99 98 98 if you prefer contact us by means of request form our website.
Weight and shape of neodymium magnets can be calculated on our magnetic calculator.

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

Technical parameters of the product - 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

Table 1: Rod construction
SM 32x125 [2xM8] / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 125 mm (L)
Active length 89 mm
Section count 3 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~764 g
Active area 89 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 (3 sections)

Chart 3: Temperature performance

Technical specification and ecology
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%
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: 130357-2026
Magnet Unit Converter
Force (pull)

Field Strength

Other deals

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 construction relies on a sealed, welded stainless steel housing, polished smooth. 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. The most effective home method is using adhesive tape, which we wrap around the dirt and peel off. In industry, cover tubes (so-called Easy Clean system) are used, from which the magnetic insert slides out.
The more Gauss, the smaller and more weakly magnetic particles will be effectively caught. Standard rods (~8000 Gs) are sufficient for catching screws, nails, and steel shavings. High induction is necessary when contaminants are microscopic or weakly magnetic.
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.

Advantages and disadvantages of Nd2Fe14B magnets.

Benefits

Besides their high retention, neodymium magnets are valued for these benefits:
  • They have stable power, and over around ten years their attraction force decreases symbolically – ~1% (in testing),
  • They retain their magnetic properties even under external field action,
  • By using a shiny coating of silver, the element has an proper look,
  • The surface of neodymium magnets generates a concentrated magnetic field – this is a key feature,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures reaching 230°C and above...
  • Possibility of custom forming as well as optimizing to specific needs,
  • Versatile presence in modern technologies – they are used in HDD drives, drive modules, medical devices, and technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which makes them useful in compact constructions

Limitations

What to avoid - cons of neodymium magnets: tips and applications.
  • At very strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • They oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Limited ability of producing nuts in the magnet and complicated forms - recommended is casing - mounting mechanism.
  • Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small components of these devices can be problematic in diagnostics medical after entering the body.
  • With large orders the cost of neodymium magnets is a challenge,

Lifting parameters

Optimal lifting capacity of a neodymium magnetwhat contributes to it?

The load parameter shown refers to the maximum value, obtained under optimal environment, meaning:
  • with the application of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
  • whose thickness is min. 10 mm
  • with a surface free of scratches
  • under conditions of gap-free contact (metal-to-metal)
  • for force acting at a right angle (in the magnet axis)
  • in neutral thermal conditions

Lifting capacity in real conditions – factors

In practice, the actual holding force results from many variables, ranked from the most important:
  • Space between magnet and steel – every millimeter of separation (caused e.g. by varnish or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
  • 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 maximum value.
  • Steel thickness – insufficiently thick plate does not accept the full field, causing part of the power to be lost into the air.
  • Chemical composition of the base – mild steel gives the best results. Alloy steels reduce magnetic permeability and lifting capacity.
  • Surface quality – the more even the surface, the better the adhesion and stronger the hold. Unevenness creates an air distance.
  • Temperature – temperature increase causes a temporary drop of force. Check the maximum operating temperature for a given model.

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under shearing force the holding force is lower. In addition, even a small distance between the magnet’s surface and the plate lowers the load capacity.

Precautions when working with NdFeB magnets
Precision electronics

Note: rare earth magnets produce a field that disrupts precision electronics. Maintain a separation from your mobile, device, and navigation systems.

Do not overheat magnets

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

Shattering risk

Beware of splinters. Magnets can fracture upon violent connection, launching sharp fragments into the air. Eye protection is mandatory.

Keep away from children

Product intended for adults. Tiny parts can be swallowed, causing severe trauma. Keep out of reach of children and animals.

Mechanical processing

Mechanical processing of neodymium magnets carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Skin irritation risks

Certain individuals suffer from a contact allergy to nickel, which is the common plating for NdFeB magnets. Frequent touching may cause an allergic reaction. It is best to wear safety gloves.

Crushing force

Big blocks can smash fingers instantly. Never put your hand between two strong magnets.

ICD Warning

Life threat: Neodymium magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.

Immense force

Exercise caution. Neodymium magnets act from a long distance and connect with huge force, often quicker than you can react.

Protect data

Powerful magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Stay away of min. 10 cm.

Important! 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