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MW 15x2 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010028

GTIN/EAN: 5906301810278

5.00

Diameter Ø

15 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

2.65 g

Magnetization Direction

↑ axial

Load capacity

1.51 kg / 14.84 N

Magnetic Induction

159.70 mT / 1597 Gs

Coating

[NiCuNi] Nickel

1.218 with VAT / pcs + price for transport

0.990 ZŁ net + 23% VAT / pcs

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Detailed specification - MW 15x2 / N38 - cylindrical magnet

Specification / characteristics - MW 15x2 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010028
GTIN/EAN 5906301810278
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 2 mm [±0,1 mm]
Weight 2.65 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.51 kg / 14.84 N
Magnetic Induction ~ ? 159.70 mT / 1597 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 15x2 / 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 analysis of the assembly - data

These values constitute the outcome of a mathematical calculation. Results are based on algorithms for the class Nd2Fe14B. Actual conditions might slightly differ from theoretical values. Treat these calculations as a reference point during assembly planning.

Table 1: Static pull force (force vs distance) - interaction chart
MW 15x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1597 Gs
159.7 mT
1.51 kg / 3.33 lbs
1510.0 g / 14.8 N
low risk
1 mm 1483 Gs
148.3 mT
1.30 kg / 2.87 lbs
1303.0 g / 12.8 N
low risk
2 mm 1320 Gs
132.0 mT
1.03 kg / 2.28 lbs
1032.2 g / 10.1 N
low risk
3 mm 1137 Gs
113.7 mT
0.77 kg / 1.69 lbs
765.0 g / 7.5 N
low risk
5 mm 791 Gs
79.1 mT
0.37 kg / 0.82 lbs
370.8 g / 3.6 N
low risk
10 mm 298 Gs
29.8 mT
0.05 kg / 0.12 lbs
52.5 g / 0.5 N
low risk
15 mm 127 Gs
12.7 mT
0.01 kg / 0.02 lbs
9.6 g / 0.1 N
low risk
20 mm 63 Gs
6.3 mT
0.00 kg / 0.01 lbs
2.4 g / 0.0 N
low risk
30 mm 22 Gs
2.2 mT
0.00 kg / 0.00 lbs
0.3 g / 0.0 N
low risk
50 mm 5 Gs
0.5 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk

Table 2: Slippage hold (wall)
MW 15x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.30 kg / 0.67 lbs
302.0 g / 3.0 N
1 mm Stal (~0.2) 0.26 kg / 0.57 lbs
260.0 g / 2.6 N
2 mm Stal (~0.2) 0.21 kg / 0.45 lbs
206.0 g / 2.0 N
3 mm Stal (~0.2) 0.15 kg / 0.34 lbs
154.0 g / 1.5 N
5 mm Stal (~0.2) 0.07 kg / 0.16 lbs
74.0 g / 0.7 N
10 mm Stal (~0.2) 0.01 kg / 0.02 lbs
10.0 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 (sliding) - behavior on slippery surfaces
MW 15x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.45 kg / 1.00 lbs
453.0 g / 4.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.30 kg / 0.67 lbs
302.0 g / 3.0 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.15 kg / 0.33 lbs
151.0 g / 1.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.76 kg / 1.66 lbs
755.0 g / 7.4 N

Table 4: Material efficiency (saturation) - power losses
MW 15x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.15 kg / 0.33 lbs
151.0 g / 1.5 N
1 mm
25%
0.38 kg / 0.83 lbs
377.5 g / 3.7 N
2 mm
50%
0.76 kg / 1.66 lbs
755.0 g / 7.4 N
3 mm
75%
1.13 kg / 2.50 lbs
1132.5 g / 11.1 N
5 mm
100%
1.51 kg / 3.33 lbs
1510.0 g / 14.8 N
10 mm
100%
1.51 kg / 3.33 lbs
1510.0 g / 14.8 N
11 mm
100%
1.51 kg / 3.33 lbs
1510.0 g / 14.8 N
12 mm
100%
1.51 kg / 3.33 lbs
1510.0 g / 14.8 N

Table 5: Thermal resistance (material behavior) - resistance threshold
MW 15x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.51 kg / 3.33 lbs
1510.0 g / 14.8 N
OK
40 °C -2.2% 1.48 kg / 3.26 lbs
1476.8 g / 14.5 N
OK
60 °C -4.4% 1.44 kg / 3.18 lbs
1443.6 g / 14.2 N
80 °C -6.6% 1.41 kg / 3.11 lbs
1410.3 g / 13.8 N
100 °C -28.8% 1.08 kg / 2.37 lbs
1075.1 g / 10.5 N

Table 6: Two magnets (attraction) - field range
MW 15x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 2.78 kg / 6.12 lbs
2 915 Gs
0.42 kg / 0.92 lbs
417 g / 4.1 N
N/A
1 mm 2.61 kg / 5.76 lbs
3 096 Gs
0.39 kg / 0.86 lbs
392 g / 3.8 N
2.35 kg / 5.18 lbs
~0 Gs
2 mm 2.40 kg / 5.28 lbs
2 966 Gs
0.36 kg / 0.79 lbs
360 g / 3.5 N
2.16 kg / 4.76 lbs
~0 Gs
3 mm 2.15 kg / 4.75 lbs
2 812 Gs
0.32 kg / 0.71 lbs
323 g / 3.2 N
1.94 kg / 4.27 lbs
~0 Gs
5 mm 1.65 kg / 3.63 lbs
2 459 Gs
0.25 kg / 0.54 lbs
247 g / 2.4 N
1.48 kg / 3.27 lbs
~0 Gs
10 mm 0.68 kg / 1.50 lbs
1 582 Gs
0.10 kg / 0.23 lbs
102 g / 1.0 N
0.61 kg / 1.35 lbs
~0 Gs
20 mm 0.10 kg / 0.21 lbs
595 Gs
0.01 kg / 0.03 lbs
14 g / 0.1 N
0.09 kg / 0.19 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
71 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
60 mm 0.00 kg / 0.00 lbs
43 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
28 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
19 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
14 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
10 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs

Table 7: Safety (HSE) (implants) - warnings
MW 15x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.5 cm
Hearing aid 10 Gs (1.0 mT) 4.0 cm
Mechanical watch 20 Gs (2.0 mT) 3.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.5 cm
Remote 50 Gs (5.0 mT) 2.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm

Table 8: Dynamics (kinetic energy) - collision effects
MW 15x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.59 km/h
(6.83 m/s)
0.06 J
30 mm 41.70 km/h
(11.58 m/s)
0.18 J
50 mm 53.83 km/h
(14.95 m/s)
0.30 J
100 mm 76.13 km/h
(21.15 m/s)
0.59 J

Table 9: Coating parameters (durability)
MW 15x2 / 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 (Flux)
MW 15x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 541 Mx 35.4 µWb
Pc Coefficient 0.20 Low (Flat)

Table 11: Hydrostatics and buoyancy
MW 15x2 / N38

Environment Effective steel pull Effect
Air (land) 1.51 kg Standard
Water (riverbed) 1.73 kg
(+0.22 kg buoyancy gain)
+14.5%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Sliding resistance

*Note: On a vertical surface, the magnet retains just ~20% of its max power.

2. Steel thickness impact

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

3. Temperature resistance

*For N38 grade, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.20

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.

Engineering data and GPSR
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: 010028-2026
Magnet Unit Converter
Force (pull)

Magnetic Field

View also proposals

This product is an exceptionally strong cylindrical magnet, produced from durable NdFeB material, which, at dimensions of Ø15x2 mm, guarantees the highest energy density. This specific item is characterized by high dimensional repeatability and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 1.51 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is perfect for building electric motors, advanced sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 14.84 N with a weight of only 2.65 g, this cylindrical magnet is indispensable in electronics 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 industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Magnets NdFeB grade 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 the strongest magnets in the same volume (Ø15x2), 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 Ø15x2 mm, which, at a weight of 2.65 g, makes it an element with impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 1.51 kg (force ~14.84 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, 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. 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.

Strengths and weaknesses of rare earth magnets.

Advantages

Besides their durability, neodymium magnets are valued for these benefits:
  • They retain full power for around ten years – the drop is just ~1% (based on simulations),
  • Neodymium magnets are distinguished by remarkably resistant to magnetic field loss caused by magnetic disturbances,
  • The use of an shiny layer of noble metals (nickel, gold, silver) causes the element to present itself better,
  • They show high magnetic induction at the operating surface, making them more effective,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of exact forming as well as adjusting to complex needs,
  • Wide application in advanced technology sectors – they serve a role in mass storage devices, electric motors, advanced medical instruments, also other advanced devices.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

What to avoid - cons of neodymium magnets and proposals for their use:
  • At very strong impacts they can crack, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in creating nuts and complex shapes in magnets, we propose using a housing - magnetic mount.
  • Possible danger related to microscopic parts of magnets are risky, if swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, tiny parts of these products can be problematic in diagnostics medical when they are in the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Breakaway strength of the magnet in ideal conditionswhat it depends on?

Information about lifting capacity was defined for the most favorable conditions, assuming:
  • on a base made of structural steel, optimally conducting the magnetic field
  • whose transverse dimension reaches at least 10 mm
  • characterized by even structure
  • without the slightest insulating layer between the magnet and steel
  • during detachment in a direction vertical to the mounting surface
  • in temp. approx. 20°C

Practical aspects of lifting capacity – factors

During everyday use, the real power results from several key aspects, listed from the most important:
  • Distance (between the magnet and the metal), because even a tiny clearance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet holds much less (typically approx. 20-30% of maximum force).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Steel grade – ideal substrate is high-permeability steel. Stainless steels may have worse magnetic properties.
  • Surface finish – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
  • Temperature – temperature increase causes a temporary drop of induction. Check the thermal limit for a given model.

Lifting capacity was assessed by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, however under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate decreases the holding force.

Warnings
Data carriers

Data protection: Neodymium magnets can damage payment cards and sensitive devices (pacemakers, hearing aids, mechanical watches).

Skin irritation risks

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If skin irritation happens, cease working with magnets and wear gloves.

Fire risk

Drilling and cutting of NdFeB material poses a fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Do not underestimate power

Handle magnets with awareness. Their immense force can surprise even professionals. Plan your moves and respect their power.

Bodily injuries

Watch your fingers. Two large magnets will join instantly with a force of several hundred kilograms, crushing anything in their path. Be careful!

Magnet fragility

Despite the nickel coating, neodymium is brittle and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Pacemakers

For implant holders: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or request help to handle the magnets.

Power loss in heat

Regular neodymium magnets (N-type) lose magnetization when the temperature exceeds 80°C. Damage is permanent.

Swallowing risk

Absolutely keep magnets away from children. Ingestion danger is high, and the consequences of magnets clamping inside the body are tragic.

GPS Danger

A powerful magnetic field negatively affects the operation of magnetometers in phones and navigation systems. Maintain magnets close to a smartphone to avoid breaking the sensors.

Security! 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