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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

Engineering simulation of the product - report

Presented information are the direct effect of a engineering calculation. Results are based on models for the material Nd2Fe14B. Actual parameters may differ from theoretical values. Use these calculations as a reference point during assembly planning.

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

Table 2: Sliding load (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: Vertical assembly (shearing) - vertical pull
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) - 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: Working in heat (material behavior) - power drop
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 range
MW 15x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (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) - 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
Mobile device 40 Gs (4.0 mT) 4.0 cm
Remote 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: Coating parameters (durability)
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

*Note: On a vertical wall, the magnet holds merely approx. 20-30% of its perpendicular strength.

2. Steel thickness impact

*Thin steel (e.g. computer case) significantly limits the holding force.

3. Temperature resistance

*For standard magnets, 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.

Engineering data and GPSR
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%
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
Quick Unit Converter
Force (pull)

Magnetic Induction

Other proposals

This product is an incredibly powerful rod magnet, composed of advanced NdFeB material, which, at dimensions of Ø15x10 mm, guarantees optimal power. 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 cylindrical magnet with significant force (approx. 7.70 kg), this product is in stock from our European logistics center, ensuring quick 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 automation, and broadly understood industry, serving as a fastening or actuating element. 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, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Magnets NdFeB grade 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 available off-the-shelf in our store.
This model is characterized by dimensions Ø15x10 mm, which, at a weight of 13.25 g, makes it an element with impressive magnetic energy density. 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.
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. 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

Besides their remarkable magnetic power, neodymium magnets offer the following advantages:
  • They virtually do not lose power, because even after ten years the performance loss is only ~1% (according to literature),
  • They show high resistance to demagnetization induced by external disturbances,
  • In other words, due to the aesthetic layer of silver, the element gains a professional look,
  • Neodymium magnets create maximum magnetic induction on a small surface, which ensures high operational effectiveness,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • In view of the potential of free shaping and customization to individualized requirements, neodymium magnets can be modeled in a broad palette of geometric configurations, which increases their versatility,
  • Versatile presence in electronics industry – they serve a role in HDD drives, brushless drives, precision medical tools, as well as industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which enables their usage in miniature devices

Limitations

What to avoid - cons of neodymium magnets and proposals for their use:
  • To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength 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 rust. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • Limited possibility of making nuts in the magnet and complicated forms - preferred is cover - magnet mounting.
  • Possible danger related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the context of child safety. Additionally, small elements of these devices are able to be problematic in diagnostics medical when they are in the body.
  • Due to complex production process, their price is relatively high,

Lifting parameters

Detachment force of the magnet in optimal conditionswhat affects it?

The load parameter shown represents the limit force, obtained under optimal environment, specifically:
  • with the contact of a sheet made of low-carbon steel, ensuring maximum field concentration
  • whose transverse dimension reaches at least 10 mm
  • with a surface perfectly flat
  • with total lack of distance (without impurities)
  • for force applied at a right angle (in the magnet axis)
  • in temp. approx. 20°C

Practical aspects of lifting capacity – factors

In real-world applications, the actual lifting capacity depends on many variables, ranked from most significant:
  • Air gap (betwixt the magnet and the plate), because even a tiny distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to varnish, rust or dirt).
  • Pull-off angle – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Plate thickness – insufficiently thick sheet does not close the flux, causing part of the flux to be lost to the other side.
  • Steel grade – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
  • Surface condition – ground elements guarantee perfect abutment, which improves force. 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 checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under shearing force the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.

Safe handling of NdFeB magnets
Adults only

Absolutely keep magnets out of reach of children. Ingestion danger is significant, and the effects of magnets connecting inside the body are fatal.

Warning for heart patients

Medical warning: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.

Respect the power

Be careful. Rare earth magnets act from a distance and snap with massive power, often quicker than you can react.

Cards and drives

Avoid bringing magnets close to a wallet, laptop, or screen. The magnetism can destroy these devices and erase data from cards.

Nickel allergy

Certain individuals suffer from a contact allergy to Ni, which is the standard coating for neodymium magnets. Prolonged contact might lead to dermatitis. We suggest use safety gloves.

Material brittleness

NdFeB magnets are ceramic materials, meaning they are fragile like glass. Clashing of two magnets will cause them shattering into shards.

Demagnetization risk

Do not overheat. NdFeB magnets are sensitive to heat. If you need operation above 80°C, look for HT versions (H, SH, UH).

Fire warning

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

Crushing force

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

GPS and phone interference

GPS units and smartphones are extremely sensitive to magnetism. Direct contact with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Attention! 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