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MW 14x3 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010025

GTIN/EAN: 5906301810247

5.00

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

product parameters »

1.845 ZŁ with VAT / pcs + price for transport

1.500 ZŁ net + 23% VAT / pcs

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Force along with form of a neodymium magnet can be analyzed with our magnetic calculator.

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

Technical details - 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 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

Technical analysis of the magnet - technical parameters

The following data are the direct effect of a physical simulation. Values rely on models for the material Nd2Fe14B. Real-world conditions may differ from theoretical values. Use these data as a reference point during assembly planning.

Table 1: Static pull force (pull vs gap) - interaction chart
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
 warning
1 mm 2199 Gs
219.9 mT
 2.24 kg / 4.94 lbs
2241.6 g / 22.0 N
 warning
2 mm 1900 Gs
190.0 mT
 1.67 kg / 3.69 lbs
1673.8 g / 16.4 N
 low risk
3 mm 1593 Gs
159.3 mT
 1.18 kg / 2.59 lbs
1175.5 g / 11.5 N
 low risk
5 mm 1062 Gs
106.2 mT
 0.52 kg / 1.15 lbs
523.0 g / 5.1 N
 low risk
10 mm 380 Gs
38.0 mT
 0.07 kg / 0.15 lbs
66.8 g / 0.7 N
 low risk
15 mm 160 Gs
16.0 mT
 0.01 kg / 0.03 lbs
11.9 g / 0.1 N
 low risk
20 mm 79 Gs
7.9 mT
 0.00 kg / 0.01 lbs
2.9 g / 0.0 N
 low risk
30 mm 27 Gs
2.7 mT
 0.00 kg / 0.00 lbs
0.3 g / 0.0 N
 low risk
50 mm 7 Gs
0.7 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
Grip strength drops sharply with every mm of gap. Keep in mind that even a microscopic distance (e.g., dirt, varnish, dust) noticeably diminishes the holding power. Magnetic products hold most effectively in perfect adhesion; distance drastically cuts the power. See how rapidly the pull force fall, when the magnet does not touch flatly to the metal substrate. When calculating the mounting, discard additional spacers.

Table 2: Shear force (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
This section shows the estimated weight limit necessary to start the downward movement of the magnet downwards against a upright steel wall (assuming standard friction coefficient). This parameter depends on the gap size between the magnet and the surface.

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
When hanging a holder on a upright surface (e.g., a fridge), it you can count on barely approx. 20%-30% of its maximum pull force. Gravity as well as a weak degree of grip influence the fact that products slip easier than they pull off. Planning a vertical fastening? Remember that the sliding force is noticeably lower than the maximum static pull force. On a painted metal, the magnet will slide down under a noticeably lighter cargo. Using a rubber coating can effectively improve the result.

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
A too thin steel is unable to focus the full magnetic flux, which wastes potential of the holder. If you attach a powerful product to a thin surface, the flux will pass right through and the holding will be smaller. To utilize the maximum of this neodymium's potential, you need a suitably thick element of steel. The material oversaturation causes that on thin elements (e.g., thin profiles), the magnet works worse. We suggest choosing the steel thickness based on the following data.

Table 5: Thermal stability (stability) - resistance threshold
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
Classic neodymiums irreversibly lose strength past the thermal threshold. Protect against heat – high temperature can permanently destroy this product. With every degree above norm, the neodymium's capacity briefly lowers. Do not use this product close to ovens exceeding its working range. Too high temperature will lead to permanent loss of magnetism.
*Technical advisory: Temperature resistance depends not only on the material grade, as well as the dimension ratios. Thin magnets (pancake types) may lose charge permanently at lower temperatures than taller cylinders. Red status in the table signals a risk of irreversible loss for this particular item.

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

Gap (mm) Attraction (kg/lbs) (N-S) Lateral 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
Two strong neodymiums interact from a much further distance than a magnet and sheet setup. Such a system of magnet-to-magnet produces a massive flux and a further horizon of performance. Planning to create a powerful holder? Use a pair of magnets instead of a neodymium and a striker plate. Remember that when attracting two neodymiums, the collision energy is extreme. The levitation is slightly lower than the attraction, but still significant.
*Field value between like poles is approximately ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Attention: Results refer to shear force of two matching magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - warnings
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
Mechanical watch 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
Extremely neodym field poses a large risk to electronics as well as medical implants. These magnets generate a field that disrupts operation of digital equipment. Notice: the unseen radiation acts through matter and plastic. Exceptional care must be taken by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - collision effects
MW 14x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 28.91 km/h
(8.03 m/s)
 0.11 J
30 mm 49.34 km/h
(13.71 m/s)
 0.32 J
50 mm 63.69 km/h
(17.69 m/s)
 0.54 J
100 mm 90.07 km/h
(25.02 m/s)
 1.08 J
NdFeB products are delicate – a strong collision with metal causes immediate chipping. Watch the impact speed – a neodymium left loose becomes dangerous. Kinetic force can destroy the magnet or dangerous crushing to fingers. Hold the magnet firmly during bringing near metal so it doesn't hit with great force against the metal. A collision at high speed almost guarantees destruction of the magnet. Wear safety glasses when working with large magnets.

Table 9: Coating parameters (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)
The following table defines the conditions under which this product can be safely used. Improper coating selection is the most common cause of magnet failure over time.

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)
Flux value passing through the magnet pole. Key data in coil applications and motors. Pc value determines the working geometry.

Table 11: Hydrostatics and buoyancy
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%
Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.
1. Wall mount (shear)

*Caution: On a vertical surface, the magnet retains only ~20% of its perpendicular strength.

2. Steel saturation

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

3. Heat tolerance

*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) = 0.31

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
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%
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: 010025-2026
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The presented product is a very strong rod magnet, produced from advanced NdFeB material, which, at dimensions of Ø14x3 mm, guarantees optimal power. This specific item is characterized by high dimensional repeatability and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 2.76 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Furthermore, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced automation, 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 rod is indispensable in electronics and wherever every gram matters.
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., 14.1 mm) using two-component epoxy glues. To ensure long-term durability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most popular standard for professional neodymium magnets, offering a great economic balance and operational stability. If you need the strongest 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 store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 14 mm and height 3 mm. The key parameter here is the holding force amounting to approximately 2.76 kg (force ~27.06 N), which, with such compact 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 14 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 through the diameter if your project requires it.

Advantages and disadvantages of neodymium magnets.

Benefits

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They retain magnetic properties for nearly ten years – the loss is just ~1% (based on simulations),
  • Neodymium magnets remain exceptionally resistant to demagnetization caused by external interference,
  • By using a reflective layer of gold, the element has an aesthetic look,
  • They show high magnetic induction at the operating surface, which improves attraction properties,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures reaching 230°C and above...
  • Thanks to modularity in constructing and the capacity to customize to specific needs,
  • Wide application in future technologies – they serve a role in HDD drives, motor assemblies, diagnostic systems, and complex engineering applications.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Problematic aspects of neodymium magnets: application proposals
  • To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • They oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of making nuts in the magnet and complex forms - preferred is casing - mounting mechanism.
  • Potential hazard to health – tiny shards of magnets can be dangerous, in case of ingestion, which gains importance 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.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum holding power of the magnet – what it depends on?

The specified lifting capacity represents the limit force, recorded under laboratory conditions, specifically:
  • on a base made of mild steel, optimally conducting the magnetic flux
  • with a thickness no less than 10 mm
  • with a surface cleaned and smooth
  • with zero gap (without paint)
  • under perpendicular force direction (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

In real-world applications, the actual holding force depends on many variables, presented from crucial:
  • Gap (between the magnet and the metal), because even a very small clearance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
  • Loading method – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
  • Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
  • Material type – ideal substrate is high-permeability steel. Stainless steels may attract less.
  • Surface structure – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
  • Temperature – temperature increase causes a temporary drop of force. Check the maximum operating temperature for a given model.

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, in contrast under attempts to slide the magnet the lifting capacity is smaller. In addition, even a minimal clearance between the magnet and the plate reduces the load capacity.

Safety rules for work with NdFeB magnets
GPS and phone interference

Note: rare earth magnets generate a field that disrupts sensitive sensors. Keep a safe distance from your mobile, tablet, and navigation systems.

Immense force

Before use, read the rules. Sudden snapping can destroy the magnet or injure your hand. Think ahead.

Health Danger

Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.

Crushing force

Pinching hazard: The attraction force is so immense that it can result in hematomas, crushing, and even bone fractures. Use thick gloves.

Threat to electronics

Powerful magnetic fields can erase data on payment cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.

Risk of cracking

NdFeB magnets are ceramic materials, meaning they are fragile like glass. Impact of two magnets leads to them shattering into small pieces.

Product not for children

Adult use only. Small elements can be swallowed, causing serious injuries. Keep out of reach of kids and pets.

Fire warning

Dust produced during grinding of magnets is combustible. Do not drill into magnets unless you are an expert.

Warning for allergy sufferers

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If an allergic reaction appears, cease working with magnets and wear gloves.

Power loss in heat

Standard neodymium magnets (grade N) lose power when the temperature surpasses 80°C. Damage is permanent.

Danger! More info about risks in the article: Safety of working with magnets.