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MW 5x15 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010084

GTIN/EAN: 5906301810834

5.00

Diameter Ø

5 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

2.21 g

Magnetization Direction

↑ axial

Load capacity

0.48 kg / 4.68 N

Magnetic Induction

610.03 mT / 6100 Gs

Coating

[NiCuNi] Nickel

1.107 with VAT / pcs + price for transport

0.900 ZŁ net + 23% VAT / pcs

bulk discounts:

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Contact us by phone +48 22 499 98 98 alternatively contact us through contact form through our site.
Parameters and structure of a magnet can be reviewed with our force calculator.

Orders placed before 14:00 will be shipped the same business day.

Detailed specification - MW 5x15 / N38 - cylindrical magnet

Specification / characteristics - MW 5x15 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010084
GTIN/EAN 5906301810834
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 5 mm [±0,1 mm]
Height 15 mm [±0,1 mm]
Weight 2.21 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.48 kg / 4.68 N
Magnetic Induction ~ ? 610.03 mT / 6100 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x15 / 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 modeling of the magnet - technical parameters

These information are the result of a engineering simulation. Values were calculated on models for the class Nd2Fe14B. Real-world parameters may differ. Treat these data as a reference point when designing systems.

Table 1: Static pull force (force vs gap) - power drop
MW 5x15 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 6091 Gs
609.1 mT
0.48 kg / 1.06 LBS
480.0 g / 4.7 N
low risk
1 mm 3823 Gs
382.3 mT
0.19 kg / 0.42 LBS
189.1 g / 1.9 N
low risk
2 mm 2261 Gs
226.1 mT
0.07 kg / 0.15 LBS
66.1 g / 0.6 N
low risk
3 mm 1378 Gs
137.8 mT
0.02 kg / 0.05 LBS
24.6 g / 0.2 N
low risk
5 mm 607 Gs
60.7 mT
0.00 kg / 0.01 LBS
4.8 g / 0.0 N
low risk
10 mm 154 Gs
15.4 mT
0.00 kg / 0.00 LBS
0.3 g / 0.0 N
low risk
15 mm 63 Gs
6.3 mT
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
low risk
20 mm 32 Gs
3.2 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
30 mm 12 Gs
1.2 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk

Table 2: Slippage force (wall)
MW 5x15 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.10 kg / 0.21 LBS
96.0 g / 0.9 N
1 mm Stal (~0.2) 0.04 kg / 0.08 LBS
38.0 g / 0.4 N
2 mm Stal (~0.2) 0.01 kg / 0.03 LBS
14.0 g / 0.1 N
3 mm Stal (~0.2) 0.00 kg / 0.01 LBS
4.0 g / 0.0 N
5 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 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 5x15 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.14 kg / 0.32 LBS
144.0 g / 1.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.10 kg / 0.21 LBS
96.0 g / 0.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.05 kg / 0.11 LBS
48.0 g / 0.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.24 kg / 0.53 LBS
240.0 g / 2.4 N

Table 4: Material efficiency (substrate influence) - power losses
MW 5x15 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.05 kg / 0.11 LBS
48.0 g / 0.5 N
1 mm
25%
0.12 kg / 0.26 LBS
120.0 g / 1.2 N
2 mm
50%
0.24 kg / 0.53 LBS
240.0 g / 2.4 N
3 mm
75%
0.36 kg / 0.79 LBS
360.0 g / 3.5 N
5 mm
100%
0.48 kg / 1.06 LBS
480.0 g / 4.7 N
10 mm
100%
0.48 kg / 1.06 LBS
480.0 g / 4.7 N
11 mm
100%
0.48 kg / 1.06 LBS
480.0 g / 4.7 N
12 mm
100%
0.48 kg / 1.06 LBS
480.0 g / 4.7 N

Table 5: Thermal stability (material behavior) - power drop
MW 5x15 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.48 kg / 1.06 LBS
480.0 g / 4.7 N
OK
40 °C -2.2% 0.47 kg / 1.03 LBS
469.4 g / 4.6 N
OK
60 °C -4.4% 0.46 kg / 1.01 LBS
458.9 g / 4.5 N
OK
80 °C -6.6% 0.45 kg / 0.99 LBS
448.3 g / 4.4 N
100 °C -28.8% 0.34 kg / 0.75 LBS
341.8 g / 3.4 N

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 5x15 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 4.49 kg / 9.90 LBS
6 154 Gs
0.67 kg / 1.49 LBS
674 g / 6.6 N
N/A
1 mm 2.91 kg / 6.42 LBS
9 810 Gs
0.44 kg / 0.96 LBS
437 g / 4.3 N
2.62 kg / 5.78 LBS
~0 Gs
2 mm 1.77 kg / 3.90 LBS
7 646 Gs
0.27 kg / 0.59 LBS
265 g / 2.6 N
1.59 kg / 3.51 LBS
~0 Gs
3 mm 1.05 kg / 2.31 LBS
5 880 Gs
0.16 kg / 0.35 LBS
157 g / 1.5 N
0.94 kg / 2.08 LBS
~0 Gs
5 mm 0.37 kg / 0.82 LBS
3 507 Gs
0.06 kg / 0.12 LBS
56 g / 0.5 N
0.34 kg / 0.74 LBS
~0 Gs
10 mm 0.04 kg / 0.10 LBS
1 213 Gs
0.01 kg / 0.01 LBS
7 g / 0.1 N
0.04 kg / 0.09 LBS
~0 Gs
20 mm 0.00 kg / 0.01 LBS
309 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
37 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
24 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
16 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
11 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
8 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
6 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 5x15 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 4.5 cm
Hearing aid 10 Gs (1.0 mT) 3.5 cm
Timepiece 20 Gs (2.0 mT) 2.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.0 cm
Car key 50 Gs (5.0 mT) 2.0 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm

Table 8: Collisions (kinetic energy) - warning
MW 5x15 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 14.87 km/h
(4.13 m/s)
0.02 J
30 mm 25.74 km/h
(7.15 m/s)
0.06 J
50 mm 33.23 km/h
(9.23 m/s)
0.09 J
100 mm 47.00 km/h
(13.06 m/s)
0.19 J

Table 9: Surface protection spec
MW 5x15 / 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 5x15 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 382 Mx 13.8 µWb
Pc Coefficient 1.38 High (Stable)

Table 11: Hydrostatics and buoyancy
MW 5x15 / N38

Environment Effective steel pull Effect
Air (land) 0.48 kg Standard
Water (riverbed) 0.55 kg
(+0.07 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. Wall mount (shear)

*Caution: On a vertical surface, the magnet retains just approx. 20-30% of its max power.

2. Steel saturation

*Thin steel (e.g. 0.5mm PC case) severely reduces the holding force.

3. Temperature resistance

*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) = 1.38

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%
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: 010084-2026
Magnet Unit Converter
Pulling force

Magnetic Field

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This product is an extremely powerful cylinder magnet, composed of modern NdFeB material, which, at dimensions of Ø5x15 mm, guarantees optimal power. This specific item boasts a tolerance of ±0.1mm and industrial build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 0.48 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in modeling, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 4.68 N with a weight of only 2.21 g, this rod is indispensable in miniature devices and wherever low weight is crucial.
Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure long-term durability in automation, specialized industrial adhesives 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 the majority of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø5x15), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 5 mm and height 15 mm. The key parameter here is the holding force amounting to approximately 0.48 kg (force ~4.68 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.
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 5 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 and cons of rare earth magnets.

Pros

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • They retain magnetic properties for nearly 10 years – the drop is just ~1% (in theory),
  • They retain their magnetic properties even under close interference source,
  • By using a decorative layer of nickel, the element presents an professional look,
  • Magnetic induction on the surface of the magnet turns out to be exceptional,
  • Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
  • Possibility of individual shaping and adjusting to individual requirements,
  • Wide application in future technologies – they serve a role in data components, motor assemblies, diagnostic systems, as well as technologically advanced constructions.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also improves 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 power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of producing threads in the magnet and complicated shapes - preferred is a housing - magnet mounting.
  • Possible danger resulting from small fragments of magnets are risky, in case of ingestion, which gains importance in the context of child safety. Additionally, small elements of these devices can disrupt the diagnostic process medical in case of swallowing.
  • With large orders the cost of neodymium magnets can be a barrier,

Holding force characteristics

Maximum magnetic pulling forcewhat it depends on?

Breakaway force was defined for ideal contact conditions, taking into account:
  • using a sheet made of low-carbon steel, serving as a magnetic yoke
  • with a cross-section minimum 10 mm
  • characterized by even structure
  • with direct contact (no coatings)
  • under perpendicular force direction (90-degree angle)
  • at temperature approx. 20 degrees Celsius

What influences lifting capacity in practice

Real force is influenced by specific conditions, mainly (from priority):
  • Distance – the presence of any layer (paint, dirt, air) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
  • Steel thickness – too thin plate causes magnetic saturation, causing part of the power to be escaped into the air.
  • Material composition – different alloys reacts the same. Alloy additives weaken the attraction effect.
  • Surface condition – ground elements guarantee perfect abutment, which increases field saturation. Uneven metal reduce efficiency.
  • Temperature – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.

Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under shearing force the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate reduces the load capacity.

Safety rules for work with neodymium magnets
Sensitization to coating

A percentage of the population suffer from a sensitization to nickel, which is the typical protective layer for neodymium magnets. Frequent touching can result in an allergic reaction. We suggest wear safety gloves.

Safe distance

Do not bring magnets near a wallet, computer, or screen. The magnetic field can destroy these devices and wipe information from cards.

Threat to navigation

An intense magnetic field interferes with the operation of magnetometers in smartphones and navigation systems. Do not bring magnets near a smartphone to prevent breaking the sensors.

Keep away from children

Strictly store magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are very dangerous.

Danger to pacemakers

Warning for patients: Strong magnetic fields affect medical devices. Keep minimum 30 cm distance or request help to handle the magnets.

Bone fractures

Big blocks can smash fingers instantly. Never place your hand between two attracting surfaces.

Immense force

Use magnets with awareness. Their huge power can surprise even professionals. Plan your moves and respect their power.

Magnet fragility

Beware of splinters. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. Wear goggles.

Machining danger

Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this may cause fire.

Demagnetization risk

Keep cool. NdFeB magnets are sensitive to temperature. If you require operation above 80°C, look for special high-temperature series (H, SH, UH).

Safety First! Want to know more? Check our post: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98