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MW 12x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010016

GTIN/EAN: 5906301810155

5.00
Load capacity 4.83 kg / 47.41 N Magnetic Induction 531.09 mT / 5311 Gs
Diameter Ø
12 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
8.48 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

2.46net / pcs

3.03 zł with VAT (23% VAT) / pcs

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Quantity
Net
Gross
price from 1 pcs
2.46 zł
3.03 zł
price from 1920 pcs
2.21 zł
2.72 zł
price from 3840 pcs
2.16 zł
2.66 zł

Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

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Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Product card - 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 310 °C
Curie Temperature TF 590 °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

Physical modeling of the magnet - report

Presented values are the direct effect of a engineering analysis. Values were calculated on algorithms for the class Nd2Fe14B. Operational performance might slightly differ. Please consider these calculations as a preliminary roadmap during assembly planning.

Table 1: Static force (force vs distance) - 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
warning
1 mm 4424 Gs
442.4 mT
3.36 kg / 7.40 lbs
3355.3 g / 32.9 N
warning
2 mm 3585 Gs
358.5 mT
2.20 kg / 4.86 lbs
2203.4 g / 21.6 N
warning
3 mm 2857 Gs
285.7 mT
1.40 kg / 3.08 lbs
1399.2 g / 13.7 N
low risk
5 mm 1787 Gs
178.7 mT
0.55 kg / 1.21 lbs
547.8 g / 5.4 N
low risk
10 mm 622 Gs
62.2 mT
0.07 kg / 0.15 lbs
66.3 g / 0.7 N
low risk
15 mm 272 Gs
27.2 mT
0.01 kg / 0.03 lbs
12.7 g / 0.1 N
low risk
20 mm 141 Gs
14.1 mT
0.00 kg / 0.01 lbs
3.4 g / 0.0 N
low risk
30 mm 52 Gs
5.2 mT
0.00 kg / 0.00 lbs
0.5 g / 0.0 N
low risk
50 mm 13 Gs
1.3 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk

Table 2: Sliding load (vertical surface)
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: Steel thickness (substrate influence) - 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: Working in heat (material behavior) - 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: Two magnets (repulsion) - forces in the system
MW 12x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (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: Protective zones (implants) - precautionary measures
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
Mechanical watch 20 Gs (2.0 mT) 4.5 cm
Mobile device 40 Gs (4.0 mT) 3.5 cm
Remote 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: Collisions (cracking risk) - collision effects
MW 12x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 18.58 km/h
(5.16 m/s)
0.11 J
30 mm 18.75 km/h
(5.21 m/s)
0.11 J
50 mm 18.75 km/h
(5.21 m/s)
0.12 J
100 mm 18.75 km/h
(5.21 m/s)
0.12 J

Table 9: Coating parameters (durability)
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: Construction data (Flux)
MW 12x10 / N38

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

Table 11: Underwater work (magnet fishing)
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%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

1. Vertical hold

*Note: On a vertical surface, the magnet retains only a fraction of its max power.

2. Steel saturation

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

3. Heat tolerance

*For N38 material, the safety limit is 80°C.

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

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

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%

Ecology and recycling (GPSR)

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
Measurement Calculator

Magnet pull force


Magnetic Induction

Other deals

The offered product is an extremely powerful cylinder magnet, composed of durable NdFeB material, which, at dimensions of Ø12x10 mm, guarantees optimal power. This specific item boasts an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 4.83 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
This model is ideal for building generators, advanced Hall effect sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the high power of 47.41 N with a weight of only 8.48 g, this rod is indispensable in electronics 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 epoxy glues. To ensure stability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Grade N38 is the most popular standard for industrial neodymium magnets, offering a great economic balance and operational stability. If you need the strongest magnets in the same volume (Ø12x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.
This model is characterized by dimensions Ø12x10 mm, which, at a weight of 8.48 g, makes it an element with high magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 4.83 kg (force ~47.41 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.
Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 12 mm. Such an arrangement is standard when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized through the diameter if your project requires it.

Pros and cons of rare earth magnets.

Strengths

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They retain full power for nearly ten years – the drop is just ~1% (according to analyses),
  • Neodymium magnets are distinguished by remarkably resistant to demagnetization caused by external field sources,
  • Thanks to the shimmering finish, the layer of Ni-Cu-Ni, gold, or silver-plated gives an visually attractive appearance,
  • Neodymium magnets generate maximum magnetic induction on a small area, which ensures high operational effectiveness,
  • Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
  • Thanks to freedom in forming and the capacity to customize to individual projects,
  • Significant place in electronics industry – they find application in mass storage devices, electric drive systems, medical equipment, also technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which makes them useful in compact constructions

Disadvantages

Disadvantages of neodymium magnets:
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
  • Neodymium magnets lose their force 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
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • Due to limitations in creating nuts and complex forms in magnets, we recommend using cover - magnetic mount.
  • Health risk related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Furthermore, small elements of these magnets are able to disrupt the diagnostic process medical after entering the body.
  • Due to expensive raw materials, their price is relatively high,

Lifting parameters

Breakaway strength of the magnet in ideal conditionswhat affects it?

The specified lifting capacity concerns the peak performance, obtained under optimal environment, meaning:
  • using a sheet made of high-permeability steel, serving as a magnetic yoke
  • whose thickness reaches at least 10 mm
  • with an ground contact surface
  • without any air gap between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • in temp. approx. 20°C

Impact of factors on magnetic holding capacity in practice

Bear in mind that the magnet holding will differ depending on the following factors, starting with the most relevant:
  • Clearance – existence of any layer (rust, tape, air) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
  • Pull-off angle – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, 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 grade – the best choice is high-permeability steel. Cast iron may generate lower lifting capacity.
  • Surface finish – ideal contact is possible only on polished steel. Any scratches and bumps create air cushions, reducing force.
  • Temperature influence – high temperature weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was measured using a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, in contrast under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a slight gap between the magnet and the plate decreases the load capacity.

H&S for magnets
Magnets are brittle

Despite the nickel coating, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Operating temperature

Monitor thermal conditions. Heating the magnet to high heat will permanently weaken its properties and strength.

Skin irritation risks

Some people have a sensitization to nickel, which is the standard coating for NdFeB magnets. Frequent touching might lead to a rash. It is best to use protective gloves.

Powerful field

Use magnets with awareness. Their huge power can surprise even experienced users. Stay alert and respect their power.

Medical implants

Health Alert: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Magnetic interference

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

No play value

These products are not intended for children. Swallowing several magnets may result in them connecting inside the digestive tract, which constitutes a severe health hazard and necessitates urgent medical intervention.

Dust explosion hazard

Drilling and cutting of neodymium magnets carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Serious injuries

Pinching hazard: The pulling power is so great that it can result in hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Electronic hazard

Avoid bringing magnets close to a wallet, laptop, or TV. The magnetic field can permanently damage these devices and erase data from cards.

Danger! Want to know more? Check our post: Why are neodymium magnets dangerous?