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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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Product card - 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 modeling of the product - technical parameters

These data are the result of a engineering calculation. Values rely on algorithms for the class Nd2Fe14B. Actual parameters might slightly deviate from the simulation results. Treat these data as a reference point when designing systems.

Table 1: Static pull force (force 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
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

Table 2: Vertical force (vertical surface)
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 (shearing) - 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: Steel thickness (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 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

Table 6: Magnet-Magnet interaction (attraction) - field range
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: 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
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 (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

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: Construction data (Flux)
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%
Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Shear force

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

2. Efficiency vs thickness

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

3. Power loss vs temp

*For N38 grade, 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

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
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%
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
Measurement Calculator
Magnet pull force

Magnetic Field

See also offers

The offered product is a very strong cylinder magnet, composed of durable NdFeB material, which, at dimensions of Ø14x3 mm, guarantees maximum efficiency. This specific item boasts high dimensional repeatability and industrial build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 2.76 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Additionally, its Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 27.06 N with a weight of only 3.46 g, this rod is indispensable in miniature devices and wherever every gram matters.
Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure stability in industry, 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 90% of applications in modeling 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 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 impressive 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 secures it 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. 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.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Strengths

Apart from their notable magnetism, neodymium magnets have these key benefits:
  • They retain magnetic properties for nearly 10 years – the loss is just ~1% (according to analyses),
  • Magnets perfectly defend themselves against loss of magnetization caused by external fields,
  • A magnet with a metallic silver surface has an effective appearance,
  • Neodymium magnets deliver maximum magnetic induction on a contact point, which increases force concentration,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to versatility in constructing and the ability to modify to complex applications,
  • Fundamental importance in modern technologies – they are commonly used in data components, brushless drives, precision medical tools, and other advanced devices.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also improves its resistance to damage
  • Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
  • Limited ability of creating nuts in the magnet and complicated shapes - recommended is a housing - mounting mechanism.
  • Possible danger related to microscopic parts of magnets are risky, if swallowed, which becomes key in the context of child health protection. Additionally, small components of these devices can complicate diagnosis medical in case of swallowing.
  • With mass production the cost of neodymium magnets is economically unviable,

Pull force analysis

Detachment force of the magnet in optimal conditionswhat it depends on?

The specified lifting capacity concerns the limit force, measured under optimal environment, meaning:
  • on a base made of mild steel, optimally conducting the magnetic flux
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • with a surface cleaned and smooth
  • under conditions of gap-free contact (surface-to-surface)
  • for force applied at a right angle (pull-off, not shear)
  • at standard ambient temperature

What influences lifting capacity in practice

Please note that the application force may be lower depending on elements below, in order of importance:
  • Gap (between the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) can cause a decrease in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
  • Angle of force application – highest force is available only during perpendicular pulling. The shear force of the magnet along the surface is standardly many times smaller (approx. 1/5 of the lifting capacity).
  • Base massiveness – too thin sheet does not accept the full field, causing part of the flux to be lost into the air.
  • Chemical composition of the base – mild steel attracts best. Alloy steels decrease magnetic permeability and holding force.
  • Plate texture – smooth surfaces ensure maximum contact, which increases field saturation. Rough surfaces weaken the grip.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was determined with the use of a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under attempts to slide the magnet the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.

H&S for magnets
Impact on smartphones

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

Pacemakers

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

Metal Allergy

Medical facts indicate that nickel (the usual finish) is a common allergen. For allergy sufferers, prevent touching magnets with bare hands and opt for versions in plastic housing.

Physical harm

Pinching hazard: The pulling power is so immense that it can cause hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Data carriers

Device Safety: Neodymium magnets can ruin data carriers and sensitive devices (heart implants, hearing aids, timepieces).

Choking Hazard

Always keep magnets out of reach of children. Risk of swallowing is high, and the consequences of magnets clamping inside the body are tragic.

Eye protection

NdFeB magnets are ceramic materials, which means they are prone to chipping. Collision of two magnets will cause them breaking into small pieces.

Do not drill into magnets

Fire hazard: Neodymium dust is explosive. Avoid machining magnets in home conditions as this risks ignition.

Operating temperature

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

Immense force

Be careful. Neodymium magnets act from a long distance and connect with massive power, often quicker than you can move away.

Danger! Need more info? Check our post: Are neodymium magnets dangerous?