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MW 15x1 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010026

GTIN/EAN: 5906301810254

5.00

Diameter Ø

15 mm [±0,1 mm]

Height

1 mm [±0,1 mm]

Weight

1.33 g

Magnetization Direction

↑ axial

Load capacity

0.44 kg / 4.29 N

Magnetic Induction

81.93 mT / 819 Gs

Coating

[NiCuNi] Nickel

0.800 with VAT / pcs + price for transport

0.650 ZŁ net + 23% VAT / pcs

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Lifting power along with structure of neodymium magnets can be checked on our online calculation tool.

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Technical of the product - MW 15x1 / N38 - cylindrical magnet

Specification / characteristics - MW 15x1 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010026
GTIN/EAN 5906301810254
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 1 mm [±0,1 mm]
Weight 1.33 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.44 kg / 4.29 N
Magnetic Induction ~ ? 81.93 mT / 819 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 15x1 / 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 - data

These values constitute the result of a physical calculation. Results rely on algorithms for the material Nd2Fe14B. Real-world conditions might slightly differ from theoretical values. Treat these data as a preliminary roadmap for designers.

Table 1: Static force (pull vs distance) - interaction chart
MW 15x1 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 819 Gs
81.9 mT
0.44 kg / 0.97 LBS
440.0 g / 4.3 N
weak grip
1 mm 778 Gs
77.8 mT
0.40 kg / 0.88 LBS
397.0 g / 3.9 N
weak grip
2 mm 705 Gs
70.5 mT
0.33 kg / 0.72 LBS
326.0 g / 3.2 N
weak grip
3 mm 615 Gs
61.5 mT
0.25 kg / 0.55 LBS
248.0 g / 2.4 N
weak grip
5 mm 434 Gs
43.4 mT
0.12 kg / 0.27 LBS
123.5 g / 1.2 N
weak grip
10 mm 163 Gs
16.3 mT
0.02 kg / 0.04 LBS
17.3 g / 0.2 N
weak grip
15 mm 68 Gs
6.8 mT
0.00 kg / 0.01 LBS
3.1 g / 0.0 N
weak grip
20 mm 34 Gs
3.4 mT
0.00 kg / 0.00 LBS
0.7 g / 0.0 N
weak grip
30 mm 11 Gs
1.1 mT
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
weak grip
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip

Table 2: Slippage load (vertical surface)
MW 15x1 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.09 kg / 0.19 LBS
88.0 g / 0.9 N
1 mm Stal (~0.2) 0.08 kg / 0.18 LBS
80.0 g / 0.8 N
2 mm Stal (~0.2) 0.07 kg / 0.15 LBS
66.0 g / 0.6 N
3 mm Stal (~0.2) 0.05 kg / 0.11 LBS
50.0 g / 0.5 N
5 mm Stal (~0.2) 0.02 kg / 0.05 LBS
24.0 g / 0.2 N
10 mm Stal (~0.2) 0.00 kg / 0.01 LBS
4.0 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 15x1 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.13 kg / 0.29 LBS
132.0 g / 1.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.09 kg / 0.19 LBS
88.0 g / 0.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.04 kg / 0.10 LBS
44.0 g / 0.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.22 kg / 0.49 LBS
220.0 g / 2.2 N

Table 4: Steel thickness (saturation) - power losses
MW 15x1 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.04 kg / 0.10 LBS
44.0 g / 0.4 N
1 mm
25%
0.11 kg / 0.24 LBS
110.0 g / 1.1 N
2 mm
50%
0.22 kg / 0.49 LBS
220.0 g / 2.2 N
3 mm
75%
0.33 kg / 0.73 LBS
330.0 g / 3.2 N
5 mm
100%
0.44 kg / 0.97 LBS
440.0 g / 4.3 N
10 mm
100%
0.44 kg / 0.97 LBS
440.0 g / 4.3 N
11 mm
100%
0.44 kg / 0.97 LBS
440.0 g / 4.3 N
12 mm
100%
0.44 kg / 0.97 LBS
440.0 g / 4.3 N

Table 5: Thermal stability (stability) - power drop
MW 15x1 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.44 kg / 0.97 LBS
440.0 g / 4.3 N
OK
40 °C -2.2% 0.43 kg / 0.95 LBS
430.3 g / 4.2 N
OK
60 °C -4.4% 0.42 kg / 0.93 LBS
420.6 g / 4.1 N
80 °C -6.6% 0.41 kg / 0.91 LBS
411.0 g / 4.0 N
100 °C -28.8% 0.31 kg / 0.69 LBS
313.3 g / 3.1 N

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 15x1 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.73 kg / 1.61 LBS
1 597 Gs
0.11 kg / 0.24 LBS
110 g / 1.1 N
N/A
1 mm 0.70 kg / 1.55 LBS
1 607 Gs
0.11 kg / 0.23 LBS
106 g / 1.0 N
0.63 kg / 1.40 LBS
~0 Gs
2 mm 0.66 kg / 1.45 LBS
1 556 Gs
0.10 kg / 0.22 LBS
99 g / 1.0 N
0.59 kg / 1.31 LBS
~0 Gs
3 mm 0.60 kg / 1.33 LBS
1 489 Gs
0.09 kg / 0.20 LBS
91 g / 0.9 N
0.54 kg / 1.20 LBS
~0 Gs
5 mm 0.48 kg / 1.05 LBS
1 323 Gs
0.07 kg / 0.16 LBS
71 g / 0.7 N
0.43 kg / 0.95 LBS
~0 Gs
10 mm 0.21 kg / 0.45 LBS
868 Gs
0.03 kg / 0.07 LBS
31 g / 0.3 N
0.18 kg / 0.41 LBS
~0 Gs
20 mm 0.03 kg / 0.06 LBS
325 Gs
0.00 kg / 0.01 LBS
4 g / 0.0 N
0.03 kg / 0.06 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
23 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
15 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
10 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
7 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
5 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Protective zones (electronics) - warnings
MW 15x1 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 4.0 cm
Hearing aid 10 Gs (1.0 mT) 3.5 cm
Timepiece 20 Gs (2.0 mT) 2.5 cm
Mobile device 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) 0.5 cm

Table 8: Dynamics (cracking risk) - collision effects
MW 15x1 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 18.79 km/h
(5.22 m/s)
0.02 J
30 mm 31.78 km/h
(8.83 m/s)
0.05 J
50 mm 41.02 km/h
(11.39 m/s)
0.09 J
100 mm 58.01 km/h
(16.11 m/s)
0.17 J

Table 9: Coating parameters (durability)
MW 15x1 / 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 (Flux)
MW 15x1 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 025 Mx 20.3 µWb
Pc Coefficient 0.11 Low (Flat)

Table 11: Physics of underwater searching
MW 15x1 / N38

Environment Effective steel pull Effect
Air (land) 0.44 kg Standard
Water (riverbed) 0.50 kg
(+0.06 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. Vertical hold

*Note: On a vertical wall, the magnet retains just a fraction of its perpendicular strength.

2. Efficiency vs thickness

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

3. Temperature resistance

*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) = 0.11

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.

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%
Sustainability
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: 010026-2026
Measurement Calculator
Force (pull)

Magnetic Field

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This product is an incredibly powerful rod magnet, composed of advanced NdFeB material, which, at dimensions of Ø15x1 mm, guarantees the highest energy density. The MW 15x1 / N38 component features an accuracy of ±0.1mm and professional build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 0.44 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 4.29 N with a weight of only 1.33 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.
Since our magnets have a tolerance of ±0.1mm, the best method 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 durability of the connection.
Magnets NdFeB grade N38 are suitable for the majority of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø15x1), 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 15 mm and height 1 mm. The value of 4.29 N means that the magnet is capable of holding a weight many times exceeding its own mass of 1.33 g. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 1 mm), which means that the N and S poles are located on the flat, circular surfaces. 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.

Strengths as well as weaknesses of neodymium magnets.

Advantages

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They retain magnetic properties for nearly ten years – the loss is just ~1% (based on simulations),
  • They are extremely resistant to demagnetization induced by external field influence,
  • A magnet with a smooth nickel surface looks better,
  • The surface of neodymium magnets generates a strong magnetic field – this is a key feature,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to flexibility in shaping and the ability to adapt to complex applications,
  • Huge importance in future technologies – they serve a role in magnetic memories, drive modules, diagnostic systems, as well as industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which makes them useful in miniature devices

Disadvantages

Disadvantages of neodymium magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
  • Neodymium magnets decrease their power 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 stability even at temperatures up to 230°C
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • Due to limitations in producing nuts and complicated forms in magnets, we propose using cover - magnetic mount.
  • Potential hazard related to microscopic parts of magnets can be dangerous, in case of ingestion, which gains importance in the aspect of protecting the youngest. It is also worth noting that small elements of these magnets can complicate diagnosis 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

Holding force characteristics

Maximum magnetic pulling forcewhat affects it?

Information about lifting capacity is the result of a measurement for optimal configuration, taking into account:
  • on a plate made of mild steel, effectively closing the magnetic flux
  • with a cross-section of at least 10 mm
  • characterized by smoothness
  • without the slightest air gap between the magnet and steel
  • under vertical force vector (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Lifting capacity in practice – influencing factors

Please note that the working load may be lower depending on the following factors, in order of importance:
  • Distance – existence of foreign body (rust, dirt, air) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Force direction – catalog parameter refers to pulling vertically. When slipping, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
  • Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
  • Plate material – mild steel gives the best results. Alloy admixtures reduce magnetic properties and lifting capacity.
  • Base smoothness – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Thermal factor – hot environment weakens pulling force. Too high temperature can permanently damage the magnet.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.

Warnings
Life threat

Patients with a ICD must maintain an large gap from magnets. The magnetic field can stop the functioning of the life-saving device.

Finger safety

Large magnets can break fingers instantly. Never place your hand betwixt two strong magnets.

Compass and GPS

Note: rare earth magnets produce a field that interferes with precision electronics. Keep a safe distance from your phone, device, and GPS.

Choking Hazard

Always keep magnets away from children. Choking hazard is high, and the consequences of magnets clamping inside the body are tragic.

Nickel allergy

Medical facts indicate that the nickel plating (standard magnet coating) is a potent allergen. For allergy sufferers, avoid touching magnets with bare hands or opt for encased magnets.

Safe operation

Handle magnets with awareness. Their huge power can shock even experienced users. Stay alert and respect their force.

Protect data

Do not bring magnets close to a purse, laptop, or TV. The magnetism can irreversibly ruin these devices and erase data from cards.

Risk of cracking

Despite metallic appearance, neodymium is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into hazardous fragments.

Demagnetization risk

Do not overheat. NdFeB magnets are susceptible to heat. If you need operation above 80°C, ask us about HT versions (H, SH, UH).

Dust is flammable

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

Security! More info about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98