Strong neodymium magnets: discs and cylinders

Want to buy really powerful magnets? We offer wide selection of various shapes and sizes. Best choice for home use, garage and model making. Browse assortment available immediately.

see magnet catalog

Equipment for treasure hunters

Begin your hobby with treasure salvaging! Our double-handle grips (F200, F400) provide safety guarantee and immense power. Stainless steel construction and strong lines will perform in rivers and lakes.

choose your set

Magnetic mounting systems

Professional solutions for mounting without drilling. Threaded grips (M8, M10, M12) guarantee instant organization of work on warehouses. Perfect for installing lamps, detectors and ads.

check technical specs

🚚 Order by 14:00 – we'll ship same day!

Dhit sp. z o.o.
Product available Ships tomorrow

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

bulk discounts:

Need more?

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
Looking for a better price?

Give us a call +48 888 99 98 98 alternatively let us know via inquiry form the contact form page.
Strength along with form of a magnet can be verified on our magnetic calculator.

Order by 14:00 and we’ll ship today!

Detailed specification - 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

Physical simulation of the magnet - report

Presented values constitute the direct effect of a physical simulation. Values are based on algorithms for the material Nd2Fe14B. Real-world conditions may differ from theoretical values. Please consider these data as a preliminary roadmap for designers.

Table 1: Static pull force (force 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
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: Slippage hold (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) - 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: Material efficiency (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: Thermal resistance (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) - field collision
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) - 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
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 (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: 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 (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: Submerged application
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. Wall mount (shear)

*Warning: On a vertical surface, the magnet retains merely approx. 20-30% of its nominal pull.

2. Steel saturation

*Thin metal sheet (e.g. computer case) drastically weakens the holding force.

3. Heat tolerance

*For N38 grade, 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

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.

Technical specification and ecology
Chemical composition
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
Measurement Calculator
Force (pull)

Magnetic Induction

Check out also products

The presented product is an incredibly powerful cylindrical magnet, produced from modern NdFeB material, which, at dimensions of Ø14x3 mm, guarantees maximum efficiency. The MW 14x3 / N38 model is characterized by an accuracy of ±0.1mm and industrial build quality, making it a perfect 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. Moreover, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is created for building electric motors, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force 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 best method is to glue them into holes with a slightly larger diameter (e.g., 14.1 mm) using epoxy glues. To ensure stability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.
Magnets N38 are strong enough for 90% 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 (Ø14x3), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf 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 key parameter here is the lifting capacity amounting to approximately 2.76 kg (force ~27.06 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, 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 most desirable 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 rare earth magnets.

Pros

Apart from their strong magnetic energy, neodymium magnets have these key benefits:
  • They do not lose magnetism, even over nearly 10 years – the reduction in power is only ~1% (based on measurements),
  • They show high resistance to demagnetization induced by external field influence,
  • By using a smooth coating of nickel, the element has an professional look,
  • They feature high magnetic induction at the operating surface, which improves attraction properties,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures approaching 230°C and above...
  • Possibility of exact shaping and modifying to individual needs,
  • Wide application in electronics industry – they serve a role in data components, brushless drives, advanced medical instruments, also industrial machines.
  • Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Weaknesses

Cons of neodymium magnets and proposals for their use:
  • Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (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
  • They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in creating threads and complex shapes in magnets, we recommend using a housing - magnetic mechanism.
  • Potential hazard related to microscopic parts of magnets are risky, in case of ingestion, which becomes key in the aspect of protecting the youngest. Additionally, small components of these products are able to be problematic in diagnostics medical in case of swallowing.
  • Due to complex production process, their price is higher than average,

Holding force characteristics

Detachment force of the magnet in optimal conditionswhat contributes to it?

Breakaway force is the result of a measurement for ideal contact conditions, including:
  • using a plate made of mild steel, acting as a magnetic yoke
  • with a cross-section no less than 10 mm
  • with a plane cleaned and smooth
  • under conditions of no distance (metal-to-metal)
  • under perpendicular application of breakaway force (90-degree angle)
  • at room temperature

Magnet lifting force in use – key factors

Please note that the application force will differ subject to elements below, in order of importance:
  • Air gap (between the magnet and the plate), since even a microscopic clearance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to varnish, corrosion or debris).
  • Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of nominal force).
  • Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
  • Chemical composition of the base – low-carbon steel attracts best. Higher carbon content reduce magnetic permeability and lifting capacity.
  • Surface quality – the more even the plate, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
  • Thermal environment – heating the magnet results in weakening of induction. Check 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, in contrast under parallel forces the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate decreases the holding force.

H&S for magnets
Electronic hazard

Avoid bringing magnets close to a purse, laptop, or TV. The magnetism can irreversibly ruin these devices and wipe information from cards.

Protective goggles

Watch out for shards. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. We recommend safety glasses.

Threat to navigation

A strong magnetic field disrupts the functioning of compasses in phones and GPS navigation. Keep magnets near a device to prevent breaking the sensors.

Thermal limits

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

Warning for heart patients

People with a heart stimulator should maintain an absolute distance from magnets. The magnetic field can stop the operation of the life-saving device.

Powerful field

Use magnets consciously. Their huge power can shock even experienced users. Be vigilant and do not underestimate their force.

Do not give to children

Strictly store magnets out of reach of children. Choking hazard is high, and the consequences of magnets connecting inside the body are very dangerous.

Pinching danger

Watch your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, destroying anything in their path. Be careful!

Sensitization to coating

Some people have a hypersensitivity to nickel, which is the typical protective layer for NdFeB magnets. Extended handling may cause dermatitis. We suggest use protective gloves.

Do not drill into magnets

Drilling and cutting of neodymium magnets poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Warning! Looking for details? Check our post: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98