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MW 15x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010027

GTIN/EAN: 5906301810261

5.00

Diameter Ø

15 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

13.25 g

Magnetization Direction

↑ axial

Load capacity

7.70 kg / 75.55 N

Magnetic Induction

495.60 mT / 4956 Gs

Coating

[NiCuNi] Nickel

4.51 with VAT / pcs + price for transport

3.67 ZŁ net + 23% VAT / pcs

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Technical - MW 15x10 / N38 - cylindrical magnet

Specification / characteristics - MW 15x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010027
GTIN/EAN 5906301810261
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 15 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 13.25 g
Magnetization Direction ↑ axial
Load capacity ~ ? 7.70 kg / 75.55 N
Magnetic Induction ~ ? 495.60 mT / 4956 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 15x10 / 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 modeling of the assembly - report

The following data represent the result of a mathematical analysis. Results are based on algorithms for the class Nd2Fe14B. Real-world conditions may deviate from the simulation results. Treat these calculations as a reference point for designers.

Table 1: Static force (pull vs gap) - interaction chart
MW 15x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4954 Gs
495.4 mT
7.70 kg / 16.98 LBS
7700.0 g / 75.5 N
warning
1 mm 4303 Gs
430.3 mT
5.81 kg / 12.81 LBS
5810.9 g / 57.0 N
warning
2 mm 3660 Gs
366.0 mT
4.20 kg / 9.27 LBS
4203.8 g / 41.2 N
warning
3 mm 3068 Gs
306.8 mT
2.95 kg / 6.51 LBS
2953.2 g / 29.0 N
warning
5 mm 2106 Gs
210.6 mT
1.39 kg / 3.07 LBS
1392.2 g / 13.7 N
safe
10 mm 845 Gs
84.5 mT
0.22 kg / 0.49 LBS
224.2 g / 2.2 N
safe
15 mm 393 Gs
39.3 mT
0.05 kg / 0.11 LBS
48.5 g / 0.5 N
safe
20 mm 210 Gs
21.0 mT
0.01 kg / 0.03 LBS
13.8 g / 0.1 N
safe
30 mm 79 Gs
7.9 mT
0.00 kg / 0.00 LBS
2.0 g / 0.0 N
safe
50 mm 21 Gs
2.1 mT
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
safe

Table 2: Shear capacity (wall)
MW 15x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.54 kg / 3.40 LBS
1540.0 g / 15.1 N
1 mm Stal (~0.2) 1.16 kg / 2.56 LBS
1162.0 g / 11.4 N
2 mm Stal (~0.2) 0.84 kg / 1.85 LBS
840.0 g / 8.2 N
3 mm Stal (~0.2) 0.59 kg / 1.30 LBS
590.0 g / 5.8 N
5 mm Stal (~0.2) 0.28 kg / 0.61 LBS
278.0 g / 2.7 N
10 mm Stal (~0.2) 0.04 kg / 0.10 LBS
44.0 g / 0.4 N
15 mm Stal (~0.2) 0.01 kg / 0.02 LBS
10.0 g / 0.1 N
20 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 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 (sliding) - behavior on slippery surfaces
MW 15x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
2.31 kg / 5.09 LBS
2310.0 g / 22.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.54 kg / 3.40 LBS
1540.0 g / 15.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.77 kg / 1.70 LBS
770.0 g / 7.6 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
3.85 kg / 8.49 LBS
3850.0 g / 37.8 N

Table 4: Material efficiency (saturation) - power losses
MW 15x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.77 kg / 1.70 LBS
770.0 g / 7.6 N
1 mm
25%
1.93 kg / 4.24 LBS
1925.0 g / 18.9 N
2 mm
50%
3.85 kg / 8.49 LBS
3850.0 g / 37.8 N
3 mm
75%
5.78 kg / 12.73 LBS
5775.0 g / 56.7 N
5 mm
100%
7.70 kg / 16.98 LBS
7700.0 g / 75.5 N
10 mm
100%
7.70 kg / 16.98 LBS
7700.0 g / 75.5 N
11 mm
100%
7.70 kg / 16.98 LBS
7700.0 g / 75.5 N
12 mm
100%
7.70 kg / 16.98 LBS
7700.0 g / 75.5 N

Table 5: Working in heat (material behavior) - thermal limit
MW 15x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 7.70 kg / 16.98 LBS
7700.0 g / 75.5 N
OK
40 °C -2.2% 7.53 kg / 16.60 LBS
7530.6 g / 73.9 N
OK
60 °C -4.4% 7.36 kg / 16.23 LBS
7361.2 g / 72.2 N
OK
80 °C -6.6% 7.19 kg / 15.86 LBS
7191.8 g / 70.6 N
100 °C -28.8% 5.48 kg / 12.09 LBS
5482.4 g / 53.8 N

Table 6: Two magnets (repulsion) - field collision
MW 15x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 26.73 kg / 58.93 LBS
5 797 Gs
4.01 kg / 8.84 LBS
4010 g / 39.3 N
N/A
1 mm 23.38 kg / 51.55 LBS
9 265 Gs
3.51 kg / 7.73 LBS
3507 g / 34.4 N
21.04 kg / 46.39 LBS
~0 Gs
2 mm 20.17 kg / 44.48 LBS
8 606 Gs
3.03 kg / 6.67 LBS
3026 g / 29.7 N
18.16 kg / 40.03 LBS
~0 Gs
3 mm 17.23 kg / 37.99 LBS
7 955 Gs
2.59 kg / 5.70 LBS
2585 g / 25.4 N
15.51 kg / 34.19 LBS
~0 Gs
5 mm 12.27 kg / 27.05 LBS
6 712 Gs
1.84 kg / 4.06 LBS
1840 g / 18.1 N
11.04 kg / 24.34 LBS
~0 Gs
10 mm 4.83 kg / 10.66 LBS
4 213 Gs
0.73 kg / 1.60 LBS
725 g / 7.1 N
4.35 kg / 9.59 LBS
~0 Gs
20 mm 0.78 kg / 1.72 LBS
1 690 Gs
0.12 kg / 0.26 LBS
117 g / 1.1 N
0.70 kg / 1.54 LBS
~0 Gs
50 mm 0.02 kg / 0.04 LBS
248 Gs
0.00 kg / 0.01 LBS
3 g / 0.0 N
0.02 kg / 0.03 LBS
~0 Gs
60 mm 0.01 kg / 0.01 LBS
158 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
70 mm 0.00 kg / 0.01 LBS
107 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
75 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
55 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
41 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Hazards (electronics) - warnings
MW 15x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 8.5 cm
Hearing aid 10 Gs (1.0 mT) 7.0 cm
Mechanical watch 20 Gs (2.0 mT) 5.5 cm
Mobile device 40 Gs (4.0 mT) 4.0 cm
Car key 50 Gs (5.0 mT) 4.0 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm

Table 8: Dynamics (kinetic energy) - warning
MW 15x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.75 km/h
(6.88 m/s)
0.31 J
30 mm 42.12 km/h
(11.70 m/s)
0.91 J
50 mm 54.36 km/h
(15.10 m/s)
1.51 J
100 mm 76.88 km/h
(21.36 m/s)
3.02 J

Table 9: Surface protection spec
MW 15x10 / 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 15x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 8 827 Mx 88.3 µWb
Pc Coefficient 0.71 High (Stable)

Table 11: Hydrostatics and buoyancy
MW 15x10 / N38

Environment Effective steel pull Effect
Air (land) 7.70 kg Standard
Water (riverbed) 8.82 kg
(+1.12 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 holds only a fraction of its perpendicular strength.

2. Steel saturation

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

3. Power loss vs temp

*For N38 grade, the critical limit is 80°C.

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

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

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 specification and ecology
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: 010027-2026
Quick Unit Converter
Pulling force

Magnetic Induction

Other products

The offered product is an incredibly powerful rod magnet, manufactured from durable NdFeB material, which, at dimensions of Ø15x10 mm, guarantees maximum efficiency. This specific item is characterized by an accuracy 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. 7.70 kg), this product is in stock from our warehouse in Poland, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is perfect for building generators, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 75.55 N with a weight of only 13.25 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.
Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure stability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Magnets N38 are strong enough for 90% of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø15x10), 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 15 mm and height 10 mm. The value of 75.55 N means that the magnet is capable of holding a weight many times exceeding its own mass of 13.25 g. 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 10 mm), which means that the N and S poles are located on the flat, circular surfaces. 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 diametrically if your project requires it.

Advantages and disadvantages of Nd2Fe14B magnets.

Advantages

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • They retain attractive force for almost 10 years – the drop is just ~1% (based on simulations),
  • Neodymium magnets are distinguished by exceptionally resistant to demagnetization caused by external interference,
  • The use of an aesthetic coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • They feature high magnetic induction at the operating surface, which affects their effectiveness,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to flexibility in constructing and the capacity to modify to individual projects,
  • Significant place in modern industrial fields – they are commonly used in HDD drives, brushless drives, diagnostic systems, as well as complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which makes them useful in compact constructions

Weaknesses

Disadvantages of NdFeB 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 improves its resistance to damage
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • They oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • We recommend a housing - magnetic mount, due to difficulties in creating nuts inside the magnet and complicated shapes.
  • Health risk resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these products can be problematic in diagnostics medical after entering the body.
  • Due to neodymium price, their price exceeds standard values,

Pull force analysis

Breakaway strength of the magnet in ideal conditionswhat affects it?

The specified lifting capacity concerns the maximum value, recorded under optimal environment, meaning:
  • with the use of a yoke made of special test steel, ensuring maximum field concentration
  • whose transverse dimension reaches at least 10 mm
  • characterized by smoothness
  • under conditions of no distance (surface-to-surface)
  • under axial force vector (90-degree angle)
  • at temperature room level

Lifting capacity in real conditions – factors

In real-world applications, the actual lifting capacity depends on several key aspects, ranked from the most important:
  • Gap between magnet and steel – every millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Load vector – highest force is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the plate is usually several times lower (approx. 1/5 of the lifting capacity).
  • Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
  • Material composition – different alloys reacts the same. High carbon content weaken the attraction effect.
  • Surface quality – the more even the plate, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
  • Thermal environment – temperature increase causes a temporary drop of force. Check the maximum operating temperature for a given model.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate reduces the lifting capacity.

Safety rules for work with neodymium magnets
Bodily injuries

Danger of trauma: The pulling power is so immense that it can cause hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Impact on smartphones

GPS units and mobile phones are extremely sensitive to magnetism. Direct contact with a strong magnet can decalibrate the sensors in your phone.

Swallowing risk

Strictly keep magnets out of reach of children. Choking hazard is high, and the effects of magnets clamping inside the body are life-threatening.

Nickel allergy

A percentage of the population suffer from a sensitization to Ni, which is the typical protective layer for neodymium magnets. Frequent touching can result in a rash. We recommend use protective gloves.

Respect the power

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

Health Danger

Health Alert: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.

Thermal limits

Standard neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. This process is irreversible.

Electronic hazard

Data protection: Strong magnets can ruin data carriers and sensitive devices (pacemakers, medical aids, mechanical watches).

Flammability

Combustion risk: Rare earth powder is highly flammable. Do not process magnets without safety gear as this may cause fire.

Shattering risk

Neodymium magnets are sintered ceramics, meaning they are very brittle. Impact of two magnets will cause them cracking into shards.

Important! More info about risks in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98