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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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Force and shape of neodymium magnets can be estimated using our magnetic mass calculator.

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Technical specification of the product - 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 analysis of the magnet - report

Presented data represent the direct effect of a mathematical simulation. Values rely on models for the class Nd2Fe14B. Real-world parameters might slightly differ. Please consider these calculations as a reference point when designing systems.

Table 1: Static force (force 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: Vertical hold (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 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: Steel thickness (substrate influence) - sheet metal selection
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: Thermal stability (stability) - 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 (attraction) - field range
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: Safety (HSE) (electronics) - precautionary measures
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
Timepiece 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: 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: Electrical 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: Underwater work (magnet fishing)
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

*Caution: On a vertical wall, the magnet holds only a fraction of its max power.

2. Plate thickness effect

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

3. Thermal stability

*For standard magnets, 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

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
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%
Environmental data
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
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Pulling force

Magnetic Field

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The offered product is an exceptionally strong cylinder magnet, composed of modern NdFeB material, which, with dimensions of Ø15x10 mm, guarantees maximum efficiency. The MW 15x10 / N38 model 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 significant 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 shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. 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 every gram matters.
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 two-component 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 high repeatability of the connection.
Magnets N38 are suitable for 90% of applications in modeling and machine building, where extreme 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 in continuous sale in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 15 mm and height 10 mm. The key parameter here is the holding force amounting to approximately 7.70 kg (force ~75.55 N), which, with such defined dimensions, proves the high power 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 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 diametrically if your project requires it.

Pros and cons of neodymium magnets.

Strengths

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They do not lose strength, even after around ten years – the reduction in strength is only ~1% (theoretically),
  • Neodymium magnets are extremely resistant to demagnetization caused by magnetic disturbances,
  • The use of an shiny finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • The surface of neodymium magnets generates a intense magnetic field – this is a distinguishing feature,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Thanks to the possibility of flexible forming and customization to individualized needs, NdFeB magnets can be produced in a variety of geometric configurations, which amplifies use scope,
  • Universal use in high-tech industry – they find application in HDD drives, brushless drives, advanced medical instruments, as well as complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which allows their use in compact constructions

Disadvantages

Cons of neodymium magnets and proposals for their use:
  • They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
  • When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • We recommend casing - magnetic mount, due to difficulties in realizing threads inside the magnet and complicated forms.
  • Health risk to health – tiny shards of magnets can be dangerous, in case of ingestion, which becomes key in the context of child health protection. It is also worth noting that small components of these devices are able to complicate diagnosis medical in case of swallowing.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Optimal lifting capacity of a neodymium magnetwhat it depends on?

The force parameter is a result of laboratory testing executed under standard conditions:
  • with the use of a sheet made of special test steel, ensuring maximum field concentration
  • with a thickness no less than 10 mm
  • with a surface free of scratches
  • without the slightest air gap between the magnet and steel
  • under axial force direction (90-degree angle)
  • at room temperature

Practical lifting capacity: influencing factors

Holding efficiency is influenced by working environment parameters, mainly (from most important):
  • Air gap (betwixt the magnet and the metal), as even a microscopic clearance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to paint, corrosion or debris).
  • Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
  • Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Material composition – not every steel reacts the same. Alloy additives weaken the attraction effect.
  • Smoothness – full contact is obtained only on polished steel. Rough texture create air cushions, reducing force.
  • Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.

Safety rules for work with neodymium magnets
No play value

NdFeB magnets are not suitable for play. Eating several magnets may result in them connecting inside the digestive tract, which constitutes a direct threat to life and requires urgent medical intervention.

Serious injuries

Big blocks can smash fingers instantly. Under no circumstances put your hand betwixt two attracting surfaces.

Maximum temperature

Monitor thermal conditions. Heating the magnet to high heat will ruin its magnetic structure and strength.

Beware of splinters

Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Wear goggles.

Precision electronics

An intense magnetic field disrupts the operation of magnetometers in phones and navigation systems. Maintain magnets near a device to prevent breaking the sensors.

Conscious usage

Use magnets consciously. Their powerful strength can shock even experienced users. Be vigilant and respect their force.

Danger to pacemakers

Warning for patients: Powerful magnets affect medical devices. Keep minimum 30 cm distance or request help to work with the magnets.

Cards and drives

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

Do not drill into magnets

Dust produced during cutting of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.

Allergy Warning

Studies show that nickel (standard magnet coating) is a common allergen. For allergy sufferers, refrain from direct skin contact and select encased magnets.

Danger! Need more info? Check our post: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98