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MW 14x3 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010025

GTIN/EAN: 5906301810247

5.00
Load capacity 2.76 kg / 27.06 N Magnetic Induction 244.11 mT / 2441 Gs
Diameter Ø
14 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
3.46 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

1.500net / pcs

1.845 zł with VAT (23% VAT) / pcs

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Net
Gross
price from 1 pcs
1.500 zł
1.845 zł
price from 400 pcs
1.410 zł
1.734 zł
price from 1700 pcs
1.320 zł
1.624 zł

Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

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Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical - MW 14x3 / N38 - cylindrical magnet

Specification / characteristics - MW 14x3 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010025
GTIN/EAN 5906301810247
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 14 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 3.46 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.76 kg / 27.06 N
Magnetic Induction ~ ? 244.11 mT / 2441 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 14x3 / 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 310 °C
Curie Temperature TF 590 °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 - data

The following values represent the direct effect of a mathematical simulation. Values are based on algorithms for the material Nd2Fe14B. Actual performance may differ. Please consider these calculations as a preliminary roadmap for designers.

Table 1: Static force (pull vs distance) - power drop
MW 14x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2440 Gs
244.0 mT
2.76 kg / 6.08 lbs
2760.0 g / 27.1 N
strong
1 mm 2199 Gs
219.9 mT
2.24 kg / 4.94 lbs
2241.6 g / 22.0 N
strong
2 mm 1900 Gs
190.0 mT
1.67 kg / 3.69 lbs
1673.8 g / 16.4 N
weak grip
3 mm 1593 Gs
159.3 mT
1.18 kg / 2.59 lbs
1175.5 g / 11.5 N
weak grip
5 mm 1062 Gs
106.2 mT
0.52 kg / 1.15 lbs
523.0 g / 5.1 N
weak grip
10 mm 380 Gs
38.0 mT
0.07 kg / 0.15 lbs
66.8 g / 0.7 N
weak grip
15 mm 160 Gs
16.0 mT
0.01 kg / 0.03 lbs
11.9 g / 0.1 N
weak grip
20 mm 79 Gs
7.9 mT
0.00 kg / 0.01 lbs
2.9 g / 0.0 N
weak grip
30 mm 27 Gs
2.7 mT
0.00 kg / 0.00 lbs
0.3 g / 0.0 N
weak grip
50 mm 7 Gs
0.7 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
weak grip

Table 2: Sliding hold (wall)
MW 14x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.55 kg / 1.22 lbs
552.0 g / 5.4 N
1 mm Stal (~0.2) 0.45 kg / 0.99 lbs
448.0 g / 4.4 N
2 mm Stal (~0.2) 0.33 kg / 0.74 lbs
334.0 g / 3.3 N
3 mm Stal (~0.2) 0.24 kg / 0.52 lbs
236.0 g / 2.3 N
5 mm Stal (~0.2) 0.10 kg / 0.23 lbs
104.0 g / 1.0 N
10 mm Stal (~0.2) 0.01 kg / 0.03 lbs
14.0 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) - vertical pull
MW 14x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.83 kg / 1.83 lbs
828.0 g / 8.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.55 kg / 1.22 lbs
552.0 g / 5.4 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.28 kg / 0.61 lbs
276.0 g / 2.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.38 kg / 3.04 lbs
1380.0 g / 13.5 N

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 14x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.28 kg / 0.61 lbs
276.0 g / 2.7 N
1 mm
25%
0.69 kg / 1.52 lbs
690.0 g / 6.8 N
2 mm
50%
1.38 kg / 3.04 lbs
1380.0 g / 13.5 N
3 mm
75%
2.07 kg / 4.56 lbs
2070.0 g / 20.3 N
5 mm
100%
2.76 kg / 6.08 lbs
2760.0 g / 27.1 N
10 mm
100%
2.76 kg / 6.08 lbs
2760.0 g / 27.1 N
11 mm
100%
2.76 kg / 6.08 lbs
2760.0 g / 27.1 N
12 mm
100%
2.76 kg / 6.08 lbs
2760.0 g / 27.1 N

Table 5: Thermal resistance (stability) - thermal limit
MW 14x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.76 kg / 6.08 lbs
2760.0 g / 27.1 N
OK
40 °C -2.2% 2.70 kg / 5.95 lbs
2699.3 g / 26.5 N
OK
60 °C -4.4% 2.64 kg / 5.82 lbs
2638.6 g / 25.9 N
80 °C -6.6% 2.58 kg / 5.68 lbs
2577.8 g / 25.3 N
100 °C -28.8% 1.97 kg / 4.33 lbs
1965.1 g / 19.3 N

Table 6: Two magnets (attraction) - forces in the system
MW 14x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 5.65 kg / 12.46 lbs
4 030 Gs
0.85 kg / 1.87 lbs
848 g / 8.3 N
N/A
1 mm 5.16 kg / 11.37 lbs
4 662 Gs
0.77 kg / 1.71 lbs
773 g / 7.6 N
4.64 kg / 10.23 lbs
~0 Gs
2 mm 4.59 kg / 10.12 lbs
4 398 Gs
0.69 kg / 1.52 lbs
689 g / 6.8 N
4.13 kg / 9.11 lbs
~0 Gs
3 mm 4.00 kg / 8.82 lbs
4 107 Gs
0.60 kg / 1.32 lbs
600 g / 5.9 N
3.60 kg / 7.94 lbs
~0 Gs
5 mm 2.89 kg / 6.37 lbs
3 490 Gs
0.43 kg / 0.96 lbs
434 g / 4.3 N
2.60 kg / 5.74 lbs
~0 Gs
10 mm 1.07 kg / 2.36 lbs
2 125 Gs
0.16 kg / 0.35 lbs
161 g / 1.6 N
0.96 kg / 2.12 lbs
~0 Gs
20 mm 0.14 kg / 0.30 lbs
759 Gs
0.02 kg / 0.05 lbs
21 g / 0.2 N
0.12 kg / 0.27 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
89 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
54 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
36 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
25 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
18 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
13 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) - precautionary measures
MW 14x3 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.5 cm
Hearing aid 10 Gs (1.0 mT) 4.5 cm
Timepiece 20 Gs (2.0 mT) 3.5 cm
Mobile device 40 Gs (4.0 mT) 3.0 cm
Car key 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: Impact energy (cracking risk) - warning
MW 14x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.14 km/h
(6.98 m/s)
0.08 J
30 mm 25.43 km/h
(7.06 m/s)
0.09 J
50 mm 25.43 km/h
(7.06 m/s)
0.09 J
100 mm 25.43 km/h
(7.06 m/s)
0.09 J

Table 9: Anti-corrosion coating durability
MW 14x3 / 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 14x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 4 301 Mx 43.0 µWb
Pc Coefficient 0.31 Low (Flat)

Table 11: Physics of underwater searching
MW 14x3 / N38

Environment Effective steel pull Effect
Air (land) 2.76 kg Standard
Water (riverbed) 3.16 kg
(+0.40 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. Vertical hold

*Warning: On a vertical surface, the magnet holds just a fraction of its max power.

2. Steel saturation

*Thin steel (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) = 0.31

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

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: 010025-2026
Magnet Unit Converter

Force (pull)


Magnetic Induction

Other proposals

The presented product is a very strong cylindrical magnet, made from durable NdFeB material, which, at dimensions of Ø14x3 mm, guarantees the highest energy density. The MW 14x3 / N38 component features a tolerance 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. 2.76 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It finds application in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 27.06 N with a weight of only 3.46 g, this cylindrical magnet is indispensable in electronics 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 chipping the coating of this precision component. To ensure long-term durability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Magnets 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 even stronger magnets in the same volume (Ø14x3), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 14 mm and height 3 mm. The value of 27.06 N means that the magnet is capable of holding a weight many times exceeding its own mass of 3.46 g. 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 14 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 through the diameter if your project requires it.

Pros and cons of neodymium magnets.

Benefits

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They have stable power, and over nearly ten years their attraction force decreases symbolically – ~1% (in testing),
  • They have excellent resistance to magnetic field loss when exposed to external magnetic sources,
  • By using a reflective coating of silver, the element gains an modern look,
  • Magnets are characterized by huge magnetic induction on the outer layer,
  • Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to versatility in constructing and the ability to customize to client solutions,
  • Huge importance in innovative solutions – they find application in mass storage devices, brushless drives, diagnostic systems, also multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which makes them useful in small systems

Cons

What to avoid - cons of neodymium magnets and proposals for their use:
  • To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
  • Due to limitations in creating nuts and complicated forms in magnets, we propose using cover - magnetic mount.
  • Potential hazard related to microscopic parts of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child health protection. It is also worth noting that small components of these products can be problematic in diagnostics medical in case of swallowing.
  • Due to neodymium price, their price is higher than average,

Lifting parameters

Magnetic strength at its maximum – what it depends on?

The specified lifting capacity concerns the peak performance, recorded under laboratory conditions, namely:
  • using a base made of low-carbon steel, acting as a ideal flux conductor
  • possessing a thickness of at least 10 mm to avoid saturation
  • with a plane free of scratches
  • under conditions of no distance (surface-to-surface)
  • for force applied at a right angle (pull-off, not shear)
  • at temperature room level

Lifting capacity in real conditions – factors

During everyday use, the actual holding force results from several key aspects, presented from most significant:
  • Space between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
  • Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Chemical composition of the base – mild steel gives the best results. Alloy admixtures decrease magnetic properties and lifting capacity.
  • Surface quality – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
  • Thermal environment – temperature increase results in weakening of force. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under parallel forces the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.

Precautions when working with neodymium magnets
Allergic reactions

Some people suffer from a hypersensitivity to nickel, which is the common plating for NdFeB magnets. Frequent touching can result in skin redness. We recommend use protective gloves.

No play value

These products are not toys. Swallowing several magnets may result in them pinching intestinal walls, which poses a severe health hazard and necessitates immediate surgery.

Power loss in heat

Avoid heat. NdFeB magnets are susceptible to heat. If you require operation above 80°C, look for HT versions (H, SH, UH).

Impact on smartphones

GPS units and mobile phones are extremely sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Combustion hazard

Combustion risk: Rare earth powder is explosive. Avoid machining magnets in home conditions as this risks ignition.

Hand protection

Big blocks can smash fingers in a fraction of a second. Under no circumstances put your hand between two attracting surfaces.

Medical implants

Health Alert: Neodymium magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.

Shattering risk

Neodymium magnets are sintered ceramics, which means they are prone to chipping. Clashing of two magnets will cause them cracking into shards.

Electronic devices

Device Safety: Neodymium magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, mechanical watches).

Conscious usage

Be careful. Rare earth magnets attract from a distance and connect with massive power, often quicker than you can move away.

Warning! Need more info? Check our post: Why are neodymium magnets dangerous?