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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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Detailed specification - 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

Physical simulation of the assembly - technical parameters

The following data represent the result of a physical analysis. Results were calculated on models for the class Nd2Fe14B. Real-world parameters might slightly differ. Use these calculations as a preliminary roadmap during assembly planning.

Table 1: Static force (force vs gap) - power drop
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 pounds
7700.0 g / 75.5 N
warning
1 mm 4303 Gs
430.3 mT
5.81 kg / 12.81 pounds
5810.9 g / 57.0 N
warning
2 mm 3660 Gs
366.0 mT
4.20 kg / 9.27 pounds
4203.8 g / 41.2 N
warning
3 mm 3068 Gs
306.8 mT
2.95 kg / 6.51 pounds
2953.2 g / 29.0 N
warning
5 mm 2106 Gs
210.6 mT
1.39 kg / 3.07 pounds
1392.2 g / 13.7 N
weak grip
10 mm 845 Gs
84.5 mT
0.22 kg / 0.49 pounds
224.2 g / 2.2 N
weak grip
15 mm 393 Gs
39.3 mT
0.05 kg / 0.11 pounds
48.5 g / 0.5 N
weak grip
20 mm 210 Gs
21.0 mT
0.01 kg / 0.03 pounds
13.8 g / 0.1 N
weak grip
30 mm 79 Gs
7.9 mT
0.00 kg / 0.00 pounds
2.0 g / 0.0 N
weak grip
50 mm 21 Gs
2.1 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
weak grip

Table 2: Shear load (vertical surface)
MW 15x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.54 kg / 3.40 pounds
1540.0 g / 15.1 N
1 mm Stal (~0.2) 1.16 kg / 2.56 pounds
1162.0 g / 11.4 N
2 mm Stal (~0.2) 0.84 kg / 1.85 pounds
840.0 g / 8.2 N
3 mm Stal (~0.2) 0.59 kg / 1.30 pounds
590.0 g / 5.8 N
5 mm Stal (~0.2) 0.28 kg / 0.61 pounds
278.0 g / 2.7 N
10 mm Stal (~0.2) 0.04 kg / 0.10 pounds
44.0 g / 0.4 N
15 mm Stal (~0.2) 0.01 kg / 0.02 pounds
10.0 g / 0.1 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N

Table 3: Wall mounting (shearing) - 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 pounds
2310.0 g / 22.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.54 kg / 3.40 pounds
1540.0 g / 15.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.77 kg / 1.70 pounds
770.0 g / 7.6 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
3.85 kg / 8.49 pounds
3850.0 g / 37.8 N

Table 4: Material efficiency (substrate influence) - 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 pounds
770.0 g / 7.6 N
1 mm
25%
1.93 kg / 4.24 pounds
1925.0 g / 18.9 N
2 mm
50%
3.85 kg / 8.49 pounds
3850.0 g / 37.8 N
3 mm
75%
5.78 kg / 12.73 pounds
5775.0 g / 56.7 N
5 mm
100%
7.70 kg / 16.98 pounds
7700.0 g / 75.5 N
10 mm
100%
7.70 kg / 16.98 pounds
7700.0 g / 75.5 N
11 mm
100%
7.70 kg / 16.98 pounds
7700.0 g / 75.5 N
12 mm
100%
7.70 kg / 16.98 pounds
7700.0 g / 75.5 N

Table 5: Thermal stability (material behavior) - resistance threshold
MW 15x10 / N38

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

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 15x10 / N38

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

Table 7: Protective zones (implants) - 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
Phone / Smartphone 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) - collision effects
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: Corrosion resistance
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 (Pc)
MW 15x10 / N38

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

Table 11: Physics of underwater searching
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%
Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Sliding resistance

*Warning: On a vertical surface, the magnet holds only approx. 20-30% of its nominal pull.

2. Steel saturation

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

3. Power loss vs temp

*For N38 material, 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
Elemental analysis
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: 010027-2026
Measurement Calculator
Magnet pull force

Field Strength

View also products

This product is an incredibly powerful cylindrical magnet, composed of durable NdFeB material, which, with dimensions of Ø15x10 mm, guarantees optimal power. The MW 15x10 / N38 model features high dimensional repeatability and industrial build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 7.70 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Additionally, its Ni-Cu-Ni coating secures 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 magnetic separators, where field concentration on a small surface counts. Thanks to the pull force of 75.55 N with a weight of only 13.25 g, this rod is indispensable in miniature devices and wherever low weight is crucial.
Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 15.1 mm) using epoxy glues. To ensure long-term durability in automation, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering a great economic balance and operational stability. 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 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 15 mm. 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 diametrically if your project requires it.

Pros as well as cons of rare earth magnets.

Strengths

Apart from their notable power, neodymium magnets have these key benefits:
  • They virtually do not lose power, because even after ten years the performance loss is only ~1% (based on calculations),
  • Neodymium magnets are characterized by remarkably resistant to demagnetization caused by magnetic disturbances,
  • By using a reflective coating of silver, the element acquires an proper look,
  • Magnetic induction on the surface of the magnet remains extremely intense,
  • 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 the possibility of free shaping and customization to unique solutions, magnetic components can be modeled in a wide range of shapes and sizes, which expands the range of possible applications,
  • Huge importance in electronics industry – they are utilized in hard drives, motor assemblies, diagnostic systems, and complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which makes them useful in small systems

Disadvantages

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
  • Neodymium magnets decrease their strength 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 durability even at temperatures up to 230°C
  • Magnets exposed to a humid environment can rust. Therefore during using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • We suggest casing - magnetic mechanism, due to difficulties in producing nuts inside the magnet and complex forms.
  • Possible danger related to microscopic parts of magnets pose a threat, in case of ingestion, which becomes key in the context of child health protection. Additionally, small components of these devices can be problematic in diagnostics medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

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

Breakaway force was defined for optimal configuration, assuming:
  • using a base made of high-permeability steel, acting as a circuit closing element
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • with a plane cleaned and smooth
  • with total lack of distance (no paint)
  • during pulling in a direction vertical to the mounting surface
  • at temperature approx. 20 degrees Celsius

Determinants of lifting force in real conditions

Bear in mind that the working load may be lower influenced by elements below, in order of importance:
  • Gap (betwixt the magnet and the plate), because even a microscopic clearance (e.g. 0.5 mm) results in a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Element thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Material type – ideal substrate is pure iron steel. Cast iron may generate lower lifting capacity.
  • Surface condition – ground elements guarantee perfect abutment, which improves field saturation. Rough surfaces weaken the grip.
  • Operating temperature – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was measured with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate reduces the load capacity.

Safe handling of NdFeB magnets
Data carriers

Intense magnetic fields can corrupt files on payment cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.

Keep away from children

Always store magnets out of reach of children. Ingestion danger is significant, and the effects of magnets connecting inside the body are very dangerous.

Mechanical processing

Powder produced during grinding of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Magnetic interference

A strong magnetic field disrupts the functioning of magnetometers in phones and GPS navigation. Maintain magnets near a smartphone to prevent breaking the sensors.

Beware of splinters

NdFeB magnets are ceramic materials, which means they are very brittle. Collision of two magnets will cause them shattering into shards.

Medical implants

Medical warning: Neodymium magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Nickel coating and allergies

Studies show that nickel (standard magnet coating) is a common allergen. If you have an allergy, avoid touching magnets with bare hands or select coated magnets.

Operating temperature

Keep cool. NdFeB magnets are susceptible to temperature. If you require resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

Bodily injuries

Protect your hands. Two large magnets will snap together immediately with a force of massive weight, crushing everything in their path. Be careful!

Immense force

Handle with care. Neodymium magnets act from a distance and connect with huge force, often faster than you can react.

Danger! Looking for details? Read our article: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98