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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

1.845 with VAT / pcs + price for transport

1.500 ZŁ net + 23% VAT / pcs

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Contact us by phone +48 22 499 98 98 otherwise let us know using form through our site.
Force as well as shape of magnets can be checked using our magnetic calculator.

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

Physical properties - 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

Engineering simulation of the product - report

The following values represent the result of a physical simulation. Values are based on models for the class Nd2Fe14B. Actual conditions might slightly differ. Please consider these calculations as a reference point for designers.

Table 1: Static force (pull vs gap) - 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
safe
3 mm 1593 Gs
159.3 mT
1.18 kg / 2.59 LBS
1175.5 g / 11.5 N
safe
5 mm 1062 Gs
106.2 mT
0.52 kg / 1.15 LBS
523.0 g / 5.1 N
safe
10 mm 380 Gs
38.0 mT
0.07 kg / 0.15 LBS
66.8 g / 0.7 N
safe
15 mm 160 Gs
16.0 mT
0.01 kg / 0.03 LBS
11.9 g / 0.1 N
safe
20 mm 79 Gs
7.9 mT
0.00 kg / 0.01 LBS
2.9 g / 0.0 N
safe
30 mm 27 Gs
2.7 mT
0.00 kg / 0.00 LBS
0.3 g / 0.0 N
safe
50 mm 7 Gs
0.7 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
safe

Table 2: Vertical capacity (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) - behavior on slippery surfaces
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: Steel thickness (substrate influence) - power losses
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: Working in heat (material behavior) - 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 (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

Table 7: Hazards (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
Phone / Smartphone 40 Gs (4.0 mT) 3.0 cm
Remote 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) - 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

Table 9: Corrosion resistance
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%
Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Shear force

*Warning: On a vertical surface, the magnet holds merely ~20% of its max power.

2. Plate thickness effect

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

3. Temperature resistance

*For standard magnets, the safety 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%
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
Quick Unit Converter
Pulling force

Magnetic Induction

Other proposals

The presented product is a very strong rod magnet, manufactured from durable NdFeB material, which, at dimensions of Ø14x3 mm, guarantees maximum efficiency. This specific item boasts an accuracy of ±0.1mm and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a magnetic rod with impressive force (approx. 2.76 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
This model is created for building generators, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 27.06 N with a weight of only 3.46 g, this cylindrical magnet 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., 14.1 mm) using epoxy glues. To ensure stability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Grade N38 is the most popular standard for professional neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. 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 in continuous sale in our store.
This model is characterized by dimensions Ø14x3 mm, which, at a weight of 3.46 g, makes it an element with high magnetic energy density. 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 protects the surface against external factors, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 3 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 and weaknesses of rare earth magnets.

Strengths

Besides their immense field intensity, neodymium magnets offer the following advantages:
  • Their magnetic field is maintained, and after around 10 years it drops only by ~1% (according to research),
  • They are resistant to demagnetization induced by external magnetic fields,
  • By applying a reflective layer of nickel, the element has an proper look,
  • They feature high magnetic induction at the operating surface, making them more effective,
  • 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 flexibility in shaping and the capacity to modify to individual projects,
  • Versatile presence in innovative solutions – they serve a role in magnetic memories, electric drive systems, precision medical tools, and modern systems.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:
  • Brittleness is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a special holder, which not only protects them against impacts but also increases their durability
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Limited possibility of producing threads in the magnet and complex shapes - recommended is cover - mounting mechanism.
  • Potential hazard to health – tiny shards of magnets are risky, in case of ingestion, which becomes key in the context of child health protection. It is also worth noting that small components of these magnets can be problematic in diagnostics medical after entering the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum lifting capacity of the magnetwhat affects it?

The load parameter shown represents the peak performance, measured under laboratory conditions, specifically:
  • on a block made of mild steel, effectively closing the magnetic flux
  • with a thickness no less than 10 mm
  • with a plane free of scratches
  • under conditions of ideal adhesion (surface-to-surface)
  • under axial application of breakaway force (90-degree angle)
  • at conditions approx. 20°C

What influences lifting capacity in practice

Please note that the application force will differ subject to the following factors, in order of importance:
  • Gap between surfaces – every millimeter of separation (caused e.g. by veneer or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Direction of force – maximum parameter is available only during perpendicular pulling. The shear force of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
  • Plate thickness – insufficiently thick sheet does not close the flux, causing part of the power to be wasted into the air.
  • Plate material – mild steel attracts best. Alloy steels reduce magnetic permeability and holding force.
  • Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps create air cushions, reducing force.
  • Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the lifting capacity is smaller. In addition, even a slight gap between the magnet’s surface and the plate reduces the holding force.

Warnings
Beware of splinters

Protect your eyes. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. We recommend safety glasses.

Flammability

Machining of neodymium magnets poses a fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Threat to electronics

Data protection: Neodymium magnets can damage payment cards and delicate electronics (pacemakers, hearing aids, mechanical watches).

Threat to navigation

GPS units and smartphones are highly sensitive to magnetic fields. Direct contact with a strong magnet can decalibrate the sensors in your phone.

Choking Hazard

Adult use only. Small elements pose a choking risk, causing intestinal necrosis. Store out of reach of children and animals.

Bone fractures

Big blocks can smash fingers instantly. Never place your hand betwixt two attracting surfaces.

Handling rules

Before starting, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.

Allergy Warning

Certain individuals have a contact allergy to Ni, which is the standard coating for NdFeB magnets. Prolonged contact might lead to an allergic reaction. We strongly advise use protective gloves.

Operating temperature

Watch the temperature. Exposing the magnet to high heat will ruin its properties and pulling force.

ICD Warning

Warning for patients: Strong magnetic fields disrupt medical devices. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Attention! Details about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98