Neodymium magnets – most powerful on the market

Want to buy really powerful magnets? Our range includes rich assortment of various shapes and sizes. Best choice for home use, garage and industrial tasks. See products with fast shipping.

see price list and dimensions

Grips for underwater searches

Discover your passion related to seabed exploration! Our double-handle grips (F200, F400) provide grip certainty and immense power. Stainless steel construction and reinforced ropes will perform in challenging water conditions.

find searching equipment

Magnetic mounts for industry

Reliable solutions for fixing non-invasive. Threaded grips (M8, M10, M12) provide quick improvement of work on warehouses. Perfect for mounting lighting, detectors and ads.

check available threads

🚚 Order by 14:00 – we'll ship today!

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

MW 12x8 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010022

GTIN/EAN: 5906301810216

5.00

Diameter Ø

12 mm [±0,1 mm]

Height

8 mm [±0,1 mm]

Weight

6.79 g

Magnetization Direction

↑ axial

Load capacity

4.93 kg / 48.32 N

Magnetic Induction

495.50 mT / 4955 Gs

Coating

[NiCuNi] Nickel

2.47 with VAT / pcs + price for transport

2.01 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
2.01 ZŁ
2.47 ZŁ
price from 300 pcs
1.889 ZŁ
2.32 ZŁ
price from 1250 pcs
1.769 ZŁ
2.18 ZŁ
Need advice?

Contact us by phone +48 22 499 98 98 otherwise drop us a message via inquiry form our website.
Force as well as appearance of a neodymium magnet can be analyzed using our power calculator.

Same-day shipping for orders placed before 14:00.

Physical properties - MW 12x8 / N38 - cylindrical magnet

Specification / characteristics - MW 12x8 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010022
GTIN/EAN 5906301810216
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 12 mm [±0,1 mm]
Height 8 mm [±0,1 mm]
Weight 6.79 g
Magnetization Direction ↑ axial
Load capacity ~ ? 4.93 kg / 48.32 N
Magnetic Induction ~ ? 495.50 mT / 4955 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 12x8 / N38 - cylindrical magnet
properties values units
remenance Br [min. - max.] ? 12.2-12.6 kGs
remenance Br [min. - max.] ? 1220-1260 mT
coercivity bHc ? 10.8-11.5 kOe
coercivity bHc ? 860-915 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 36-38 BH max MGOe
energy density [min. - max.] ? 287-303 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 simulation of the assembly - technical parameters

These information constitute the outcome of a physical calculation. Results were calculated on models for the class Nd2Fe14B. Real-world performance may differ from theoretical values. Treat these data as a supplementary guide when designing systems.

Table 1: Static pull force (force vs distance) - power drop
MW 12x8 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4952 Gs
495.2 mT
4.93 kg / 10.87 lbs
4930.0 g / 48.4 N
warning
1 mm 4139 Gs
413.9 mT
3.44 kg / 7.59 lbs
3445.0 g / 33.8 N
warning
2 mm 3356 Gs
335.6 mT
2.26 kg / 4.99 lbs
2264.2 g / 22.2 N
warning
3 mm 2670 Gs
267.0 mT
1.43 kg / 3.16 lbs
1433.5 g / 14.1 N
low risk
5 mm 1660 Gs
166.0 mT
0.55 kg / 1.22 lbs
554.1 g / 5.4 N
low risk
10 mm 565 Gs
56.5 mT
0.06 kg / 0.14 lbs
64.3 g / 0.6 N
low risk
15 mm 243 Gs
24.3 mT
0.01 kg / 0.03 lbs
11.8 g / 0.1 N
low risk
20 mm 124 Gs
12.4 mT
0.00 kg / 0.01 lbs
3.1 g / 0.0 N
low risk
30 mm 45 Gs
4.5 mT
0.00 kg / 0.00 lbs
0.4 g / 0.0 N
low risk
50 mm 11 Gs
1.1 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk

Table 2: Slippage capacity (vertical surface)
MW 12x8 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.99 kg / 2.17 lbs
986.0 g / 9.7 N
1 mm Stal (~0.2) 0.69 kg / 1.52 lbs
688.0 g / 6.7 N
2 mm Stal (~0.2) 0.45 kg / 1.00 lbs
452.0 g / 4.4 N
3 mm Stal (~0.2) 0.29 kg / 0.63 lbs
286.0 g / 2.8 N
5 mm Stal (~0.2) 0.11 kg / 0.24 lbs
110.0 g / 1.1 N
10 mm Stal (~0.2) 0.01 kg / 0.03 lbs
12.0 g / 0.1 N
15 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 12x8 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
1.48 kg / 3.26 lbs
1479.0 g / 14.5 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.99 kg / 2.17 lbs
986.0 g / 9.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.49 kg / 1.09 lbs
493.0 g / 4.8 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
2.47 kg / 5.43 lbs
2465.0 g / 24.2 N

Table 4: Material efficiency (substrate influence) - power losses
MW 12x8 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.49 kg / 1.09 lbs
493.0 g / 4.8 N
1 mm
25%
1.23 kg / 2.72 lbs
1232.5 g / 12.1 N
2 mm
50%
2.47 kg / 5.43 lbs
2465.0 g / 24.2 N
3 mm
75%
3.70 kg / 8.15 lbs
3697.5 g / 36.3 N
5 mm
100%
4.93 kg / 10.87 lbs
4930.0 g / 48.4 N
10 mm
100%
4.93 kg / 10.87 lbs
4930.0 g / 48.4 N
11 mm
100%
4.93 kg / 10.87 lbs
4930.0 g / 48.4 N
12 mm
100%
4.93 kg / 10.87 lbs
4930.0 g / 48.4 N

Table 5: Thermal resistance (material behavior) - power drop
MW 12x8 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 4.93 kg / 10.87 lbs
4930.0 g / 48.4 N
OK
40 °C -2.2% 4.82 kg / 10.63 lbs
4821.5 g / 47.3 N
OK
60 °C -4.4% 4.71 kg / 10.39 lbs
4713.1 g / 46.2 N
OK
80 °C -6.6% 4.60 kg / 10.15 lbs
4604.6 g / 45.2 N
100 °C -28.8% 3.51 kg / 7.74 lbs
3510.2 g / 34.4 N

Table 6: Two magnets (repulsion) - field collision
MW 12x8 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 17.10 kg / 37.69 lbs
5 795 Gs
2.56 kg / 5.65 lbs
2565 g / 25.2 N
N/A
1 mm 14.44 kg / 31.83 lbs
9 101 Gs
2.17 kg / 4.77 lbs
2166 g / 21.2 N
12.99 kg / 28.64 lbs
~0 Gs
2 mm 11.95 kg / 26.34 lbs
8 279 Gs
1.79 kg / 3.95 lbs
1792 g / 17.6 N
10.75 kg / 23.71 lbs
~0 Gs
3 mm 9.74 kg / 21.48 lbs
7 477 Gs
1.46 kg / 3.22 lbs
1462 g / 14.3 N
8.77 kg / 19.33 lbs
~0 Gs
5 mm 6.27 kg / 13.82 lbs
5 997 Gs
0.94 kg / 2.07 lbs
940 g / 9.2 N
5.64 kg / 12.44 lbs
~0 Gs
10 mm 1.92 kg / 4.24 lbs
3 320 Gs
0.29 kg / 0.64 lbs
288 g / 2.8 N
1.73 kg / 3.81 lbs
~0 Gs
20 mm 0.22 kg / 0.49 lbs
1 131 Gs
0.03 kg / 0.07 lbs
33 g / 0.3 N
0.20 kg / 0.44 lbs
~0 Gs
50 mm 0.00 kg / 0.01 lbs
142 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
60 mm 0.00 kg / 0.00 lbs
89 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
70 mm 0.00 kg / 0.00 lbs
59 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
80 mm 0.00 kg / 0.00 lbs
41 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
90 mm 0.00 kg / 0.00 lbs
30 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
100 mm 0.00 kg / 0.00 lbs
23 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs

Table 7: Hazards (implants) - precautionary measures
MW 12x8 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 7.0 cm
Hearing aid 10 Gs (1.0 mT) 5.5 cm
Mechanical watch 20 Gs (2.0 mT) 4.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 3.5 cm
Car key 50 Gs (5.0 mT) 3.0 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm

Table 8: Impact energy (cracking risk) - collision effects
MW 12x8 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 27.40 km/h
(7.61 m/s)
0.20 J
30 mm 47.07 km/h
(13.08 m/s)
0.58 J
50 mm 60.77 km/h
(16.88 m/s)
0.97 J
100 mm 85.94 km/h
(23.87 m/s)
1.93 J

Table 9: Surface protection spec
MW 12x8 / N38

Technical parameter Value / Description
Coating type [NiCuNi] Nickel
Layer structure Nickel - Copper - Nickel
Layer thickness 10-20 µm
Salt spray test (SST) ? 24 h
Recommended environment Indoors only (dry)

Table 10: Construction data (Flux)
MW 12x8 / N38

Parameter Value SI Unit / Description
Magnetic Flux 5 650 Mx 56.5 µWb
Pc Coefficient 0.71 High (Stable)

Table 11: Submerged application
MW 12x8 / N38

Environment Effective steel pull Effect
Air (land) 4.93 kg Standard
Water (riverbed) 5.64 kg
(+0.71 kg buoyancy gain)
+14.5%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Vertical hold

*Caution: On a vertical wall, the magnet retains merely approx. 20-30% of its max power.

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) severely limits the holding force.

3. Thermal stability

*For standard magnets, the max working temp is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.71

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The Pc (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher Pc value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

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: 010022-2026
Quick Unit Converter
Force (pull)

Magnetic Field

Other proposals

This product is an extremely powerful cylinder magnet, produced from durable NdFeB material, which, with dimensions of Ø12x8 mm, guarantees the highest energy density. The MW 12x8 / N38 model boasts a tolerance of ±0.1mm and professional build quality, making it an excellent solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 4.93 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Additionally, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 48.32 N with a weight of only 6.79 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.
Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure long-term durability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering a great economic balance and operational stability. If you need the strongest magnets in the same volume (Ø12x8), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 12 mm and height 8 mm. The key parameter here is the lifting capacity amounting to approximately 4.93 kg (force ~48.32 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 8 mm), which means that the N and S poles are located on the flat, circular surfaces. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized through the diameter if your project requires it.

Strengths and weaknesses of rare earth magnets.

Benefits

Besides their high retention, neodymium magnets are valued for these benefits:
  • They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (according to literature),
  • Magnets perfectly resist against demagnetization caused by foreign field sources,
  • The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • The surface of neodymium magnets generates a maximum magnetic field – this is one of their assets,
  • Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
  • Due to the option of precise molding and customization to unique projects, NdFeB magnets can be produced in a variety of shapes and sizes, which expands the range of possible applications,
  • Versatile presence in modern technologies – they are commonly used in mass storage devices, brushless drives, advanced medical instruments, and technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which enables their usage in miniature devices

Cons

Disadvantages of NdFeB magnets:
  • Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their power 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
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • We recommend casing - magnetic mount, due to difficulties in producing threads inside the magnet and complex forms.
  • Possible danger to health – tiny shards of magnets are risky, if swallowed, which is particularly important in the context of child safety. It is also worth noting that tiny parts of these products can disrupt the diagnostic process medical after entering the body.
  • Due to expensive raw materials, their price is relatively high,

Lifting parameters

Magnetic strength at its maximum – what contributes to it?

Information about lifting capacity is the result of a measurement for the most favorable conditions, including:
  • with the application of a yoke made of special test steel, guaranteeing full magnetic saturation
  • with a thickness no less than 10 mm
  • with an polished contact surface
  • with zero gap (no impurities)
  • under vertical force direction (90-degree angle)
  • in stable room temperature

Practical lifting capacity: influencing factors

Real force is influenced by specific conditions, such as (from most important):
  • Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
  • Plate material – low-carbon steel gives the best results. Alloy steels lower magnetic permeability and holding force.
  • Surface condition – ground elements guarantee perfect abutment, which increases field saturation. Rough surfaces weaken the grip.
  • Temperature influence – high temperature reduces pulling force. Too high temperature can permanently damage the magnet.

Lifting capacity was measured by applying a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. In addition, even a minimal clearance between the magnet and the plate decreases the holding force.

Safe handling of neodymium magnets
Machining danger

Fire hazard: Rare earth powder is explosive. Avoid machining magnets in home conditions as this may cause fire.

Serious injuries

Large magnets can break fingers in a fraction of a second. Under no circumstances put your hand between two strong magnets.

Do not underestimate power

Before starting, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.

Material brittleness

Despite the nickel coating, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Medical interference

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

Impact on smartphones

Note: rare earth magnets generate a field that confuses sensitive sensors. Keep a safe distance from your mobile, tablet, and GPS.

Do not give to children

Adult use only. Small elements can be swallowed, leading to intestinal necrosis. Store out of reach of children and animals.

Power loss in heat

Watch the temperature. Exposing the magnet above 80 degrees Celsius will ruin its properties and pulling force.

Data carriers

Powerful magnetic fields can erase data on payment cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.

Nickel coating and allergies

A percentage of the population have a hypersensitivity to nickel, which is the common plating for neodymium magnets. Extended handling may cause dermatitis. We recommend wear safety gloves.

Important! Need more info? Check our post: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98