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MW 12x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010016

GTIN/EAN: 5906301810155

5.00

Diameter Ø

12 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

8.48 g

Magnetization Direction

↑ axial

Load capacity

4.83 kg / 47.41 N

Magnetic Induction

531.09 mT / 5311 Gs

Coating

[NiCuNi] Nickel

3.03 with VAT / pcs + price for transport

2.46 ZŁ net + 23% VAT / pcs

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Technical - MW 12x10 / N38 - cylindrical magnet

Specification / characteristics - MW 12x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010016
GTIN/EAN 5906301810155
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 10 mm [±0,1 mm]
Weight 8.48 g
Magnetization Direction ↑ axial
Load capacity ~ ? 4.83 kg / 47.41 N
Magnetic Induction ~ ? 531.09 mT / 5311 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 12x10 / 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

Technical simulation of the assembly - data

These information are the outcome of a mathematical calculation. Values were calculated on algorithms for the class Nd2Fe14B. Real-world performance may differ. Please consider these calculations as a reference point during assembly planning.

Table 1: Static force (pull vs gap) - power drop
MW 12x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5308 Gs
530.8 mT
4.83 kg / 10.65 lbs
4830.0 g / 47.4 N
medium risk
1 mm 4424 Gs
442.4 mT
3.36 kg / 7.40 lbs
3355.3 g / 32.9 N
medium risk
2 mm 3585 Gs
358.5 mT
2.20 kg / 4.86 lbs
2203.4 g / 21.6 N
medium risk
3 mm 2857 Gs
285.7 mT
1.40 kg / 3.08 lbs
1399.2 g / 13.7 N
safe
5 mm 1787 Gs
178.7 mT
0.55 kg / 1.21 lbs
547.8 g / 5.4 N
safe
10 mm 622 Gs
62.2 mT
0.07 kg / 0.15 lbs
66.3 g / 0.7 N
safe
15 mm 272 Gs
27.2 mT
0.01 kg / 0.03 lbs
12.7 g / 0.1 N
safe
20 mm 141 Gs
14.1 mT
0.00 kg / 0.01 lbs
3.4 g / 0.0 N
safe
30 mm 52 Gs
5.2 mT
0.00 kg / 0.00 lbs
0.5 g / 0.0 N
safe
50 mm 13 Gs
1.3 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
safe

Table 2: Vertical load (wall)
MW 12x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.97 kg / 2.13 lbs
966.0 g / 9.5 N
1 mm Stal (~0.2) 0.67 kg / 1.48 lbs
672.0 g / 6.6 N
2 mm Stal (~0.2) 0.44 kg / 0.97 lbs
440.0 g / 4.3 N
3 mm Stal (~0.2) 0.28 kg / 0.62 lbs
280.0 g / 2.7 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
14.0 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: Vertical assembly (shearing) - behavior on slippery surfaces
MW 12x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
1.45 kg / 3.19 lbs
1449.0 g / 14.2 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.97 kg / 2.13 lbs
966.0 g / 9.5 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.48 kg / 1.06 lbs
483.0 g / 4.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
2.42 kg / 5.32 lbs
2415.0 g / 23.7 N

Table 4: Material efficiency (saturation) - sheet metal selection
MW 12x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.48 kg / 1.06 lbs
483.0 g / 4.7 N
1 mm
25%
1.21 kg / 2.66 lbs
1207.5 g / 11.8 N
2 mm
50%
2.42 kg / 5.32 lbs
2415.0 g / 23.7 N
3 mm
75%
3.62 kg / 7.99 lbs
3622.5 g / 35.5 N
5 mm
100%
4.83 kg / 10.65 lbs
4830.0 g / 47.4 N
10 mm
100%
4.83 kg / 10.65 lbs
4830.0 g / 47.4 N
11 mm
100%
4.83 kg / 10.65 lbs
4830.0 g / 47.4 N
12 mm
100%
4.83 kg / 10.65 lbs
4830.0 g / 47.4 N

Table 5: Thermal resistance (stability) - power drop
MW 12x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 4.83 kg / 10.65 lbs
4830.0 g / 47.4 N
OK
40 °C -2.2% 4.72 kg / 10.41 lbs
4723.7 g / 46.3 N
OK
60 °C -4.4% 4.62 kg / 10.18 lbs
4617.5 g / 45.3 N
OK
80 °C -6.6% 4.51 kg / 9.95 lbs
4511.2 g / 44.3 N
100 °C -28.8% 3.44 kg / 7.58 lbs
3439.0 g / 33.7 N

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 12x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 19.64 kg / 43.30 lbs
5 928 Gs
2.95 kg / 6.50 lbs
2946 g / 28.9 N
N/A
1 mm 16.52 kg / 36.43 lbs
9 736 Gs
2.48 kg / 5.46 lbs
2479 g / 24.3 N
14.87 kg / 32.79 lbs
~0 Gs
2 mm 13.64 kg / 30.08 lbs
8 847 Gs
2.05 kg / 4.51 lbs
2047 g / 20.1 N
12.28 kg / 27.07 lbs
~0 Gs
3 mm 11.12 kg / 24.51 lbs
7 986 Gs
1.67 kg / 3.68 lbs
1668 g / 16.4 N
10.01 kg / 22.06 lbs
~0 Gs
5 mm 7.16 kg / 15.79 lbs
6 410 Gs
1.07 kg / 2.37 lbs
1074 g / 10.5 N
6.45 kg / 14.21 lbs
~0 Gs
10 mm 2.23 kg / 4.91 lbs
3 575 Gs
0.33 kg / 0.74 lbs
334 g / 3.3 N
2.00 kg / 4.42 lbs
~0 Gs
20 mm 0.27 kg / 0.59 lbs
1 244 Gs
0.04 kg / 0.09 lbs
40 g / 0.4 N
0.24 kg / 0.54 lbs
~0 Gs
50 mm 0.00 kg / 0.01 lbs
164 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
104 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
70 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
49 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
36 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
27 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs

Table 7: Safety (HSE) (electronics) - warnings
MW 12x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 7.5 cm
Hearing aid 10 Gs (1.0 mT) 6.0 cm
Timepiece 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) 3.5 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm

Table 8: Impact energy (cracking risk) - warning
MW 12x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.27 km/h
(6.74 m/s)
0.19 J
30 mm 41.69 km/h
(11.58 m/s)
0.57 J
50 mm 53.82 km/h
(14.95 m/s)
0.95 J
100 mm 76.11 km/h
(21.14 m/s)
1.90 J

Table 9: Corrosion resistance
MW 12x10 / 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: Electrical data (Pc)
MW 12x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 6 105 Mx 61.1 µWb
Pc Coefficient 0.81 High (Stable)

Table 11: Hydrostatics and buoyancy
MW 12x10 / N38

Environment Effective steel pull Effect
Air (land) 4.83 kg Standard
Water (riverbed) 5.53 kg
(+0.70 kg buoyancy gain)
+14.5%
Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Shear force

*Note: On a vertical wall, the magnet retains just approx. 20-30% of its perpendicular strength.

2. Steel thickness impact

*Thin metal sheet (e.g. computer case) drastically reduces the holding force.

3. Thermal stability

*For standard magnets, the critical limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.81

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. 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 and environmental data
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: 010016-2026
Quick Unit Converter
Magnet pull force

Field Strength

Other offers

This product is an exceptionally strong cylinder magnet, made from durable NdFeB material, which, with dimensions of Ø12x10 mm, guarantees the highest energy density. The MW 12x10 / N38 component features a tolerance of ±0.1mm and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 4.83 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is created for building electric motors, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 47.41 N with a weight of only 8.48 g, this rod is indispensable in miniature devices and wherever every gram matters.
Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 12.1 mm) using two-component epoxy glues. To ensure long-term durability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.
Magnets N38 are strong enough for 90% of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø12x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 12 mm and height 10 mm. The key parameter here is the lifting capacity amounting to approximately 4.83 kg (force ~47.41 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 10 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.

Pros as well as cons of Nd2Fe14B magnets.

Benefits

Besides their stability, neodymium magnets are valued for these benefits:
  • They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (according to literature),
  • Neodymium magnets are distinguished by extremely resistant to loss of magnetic properties caused by external interference,
  • The use of an aesthetic finish of noble metals (nickel, gold, silver) causes the element to look better,
  • Magnets are characterized by impressive magnetic induction on the outer side,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for functioning at temperatures approaching 230°C and above...
  • Considering the possibility of accurate molding and customization to specialized solutions, magnetic components can be created in a wide range of geometric configurations, which makes them more universal,
  • Significant place in high-tech industry – they are used in mass storage devices, brushless drives, medical equipment, also complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in small systems

Weaknesses

Disadvantages of neodymium magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a special holder, which not only protects them against impacts but also increases their durability
  • Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of producing threads in the magnet and complicated shapes - preferred is casing - mounting mechanism.
  • Health risk to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. It is also worth noting that small components of these products are able to disrupt the diagnostic process medical in case of swallowing.
  • Due to expensive raw materials, their price is relatively high,

Lifting parameters

Maximum lifting force for a neodymium magnet – what contributes to it?

The force parameter is a measurement result executed under standard conditions:
  • on a base made of mild steel, effectively closing the magnetic field
  • whose transverse dimension is min. 10 mm
  • characterized by even structure
  • with direct contact (without paint)
  • under axial force vector (90-degree angle)
  • in temp. approx. 20°C

Impact of factors on magnetic holding capacity in practice

In real-world applications, the actual lifting capacity results from several key aspects, ranked from crucial:
  • Air gap (between the magnet and the metal), since even a tiny distance (e.g. 0.5 mm) results in a reduction in force by up to 50% (this also applies to paint, rust or dirt).
  • Force direction – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Steel thickness – insufficiently thick plate does not accept the full field, causing part of the flux to be wasted to the other side.
  • Material composition – different alloys reacts the same. Alloy additives weaken the attraction effect.
  • Smoothness – full contact is possible only on smooth steel. Any scratches and bumps create air cushions, reducing force.
  • Temperature – heating the magnet results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, however under shearing force the load capacity is reduced by as much as 75%. Moreover, even a small distance between the magnet and the plate lowers the lifting capacity.

Precautions when working with NdFeB magnets
Threat to navigation

Navigation devices and mobile phones are highly sensitive to magnetic fields. Close proximity with a strong magnet can decalibrate the sensors in your phone.

Electronic devices

Very strong magnetic fields can destroy records on credit cards, HDDs, and other magnetic media. Stay away of at least 10 cm.

Physical harm

Watch your fingers. Two large magnets will snap together immediately with a force of massive weight, destroying anything in their path. Be careful!

Nickel allergy

Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If skin irritation occurs, cease handling magnets and wear gloves.

Fire risk

Dust generated during grinding of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Magnets are brittle

NdFeB magnets are ceramic materials, which means they are prone to chipping. Impact of two magnets will cause them shattering into small pieces.

Do not give to children

Product intended for adults. Small elements pose a choking risk, causing intestinal necrosis. Keep away from children and animals.

Danger to pacemakers

Individuals with a pacemaker must keep an safe separation from magnets. The magnetism can stop the functioning of the implant.

Conscious usage

Before starting, read the rules. Sudden snapping can destroy the magnet or injure your hand. Be predictive.

Do not overheat magnets

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

Danger! More info about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98