Neodymium magnets – most powerful on the market

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Grips for underwater searches

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MW 14x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010391

GTIN/EAN: 5906301811084

5.00

Diameter Ø

14 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

11.55 g

Magnetization Direction

↑ axial

Load capacity

6.71 kg / 65.83 N

Magnetic Induction

507.48 mT / 5075 Gs

Coating

[NiCuNi] Nickel

6.84 with VAT / pcs + price for transport

5.56 ZŁ net + 23% VAT / pcs

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Technical parameters - MW 14x10 / N38 - cylindrical magnet

Specification / characteristics - MW 14x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010391
GTIN/EAN 5906301811084
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 10 mm [±0,1 mm]
Weight 11.55 g
Magnetization Direction ↑ axial
Load capacity ~ ? 6.71 kg / 65.83 N
Magnetic Induction ~ ? 507.48 mT / 5075 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 14x10 / 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

These values are the result of a mathematical simulation. Values were calculated on models for the class Nd2Fe14B. Real-world performance may differ. Use these data as a supplementary guide when designing systems.

Table 1: Static pull force (force vs distance) - interaction chart
MW 14x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5072 Gs
507.2 mT
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
strong
1 mm 4354 Gs
435.4 mT
4.94 kg / 10.90 LBS
4944.4 g / 48.5 N
strong
2 mm 3652 Gs
365.2 mT
3.48 kg / 7.67 LBS
3479.0 g / 34.1 N
strong
3 mm 3017 Gs
301.7 mT
2.37 kg / 5.23 LBS
2373.5 g / 23.3 N
strong
5 mm 2015 Gs
201.5 mT
1.06 kg / 2.33 LBS
1058.7 g / 10.4 N
low risk
10 mm 773 Gs
77.3 mT
0.16 kg / 0.34 LBS
155.7 g / 1.5 N
low risk
15 mm 352 Gs
35.2 mT
0.03 kg / 0.07 LBS
32.3 g / 0.3 N
low risk
20 mm 186 Gs
18.6 mT
0.01 kg / 0.02 LBS
9.0 g / 0.1 N
low risk
30 mm 69 Gs
6.9 mT
0.00 kg / 0.00 LBS
1.3 g / 0.0 N
low risk
50 mm 18 Gs
1.8 mT
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
low risk

Table 2: Vertical force (vertical surface)
MW 14x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.34 kg / 2.96 LBS
1342.0 g / 13.2 N
1 mm Stal (~0.2) 0.99 kg / 2.18 LBS
988.0 g / 9.7 N
2 mm Stal (~0.2) 0.70 kg / 1.53 LBS
696.0 g / 6.8 N
3 mm Stal (~0.2) 0.47 kg / 1.04 LBS
474.0 g / 4.6 N
5 mm Stal (~0.2) 0.21 kg / 0.47 LBS
212.0 g / 2.1 N
10 mm Stal (~0.2) 0.03 kg / 0.07 LBS
32.0 g / 0.3 N
15 mm Stal (~0.2) 0.01 kg / 0.01 LBS
6.0 g / 0.1 N
20 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 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: Wall mounting (shearing) - vertical pull
MW 14x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
2.01 kg / 4.44 LBS
2013.0 g / 19.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.34 kg / 2.96 LBS
1342.0 g / 13.2 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.67 kg / 1.48 LBS
671.0 g / 6.6 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
3.36 kg / 7.40 LBS
3355.0 g / 32.9 N

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 14x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.67 kg / 1.48 LBS
671.0 g / 6.6 N
1 mm
25%
1.68 kg / 3.70 LBS
1677.5 g / 16.5 N
2 mm
50%
3.36 kg / 7.40 LBS
3355.0 g / 32.9 N
3 mm
75%
5.03 kg / 11.09 LBS
5032.5 g / 49.4 N
5 mm
100%
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
10 mm
100%
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
11 mm
100%
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
12 mm
100%
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N

Table 5: Thermal resistance (stability) - resistance threshold
MW 14x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
OK
40 °C -2.2% 6.56 kg / 14.47 LBS
6562.4 g / 64.4 N
OK
60 °C -4.4% 6.41 kg / 14.14 LBS
6414.8 g / 62.9 N
OK
80 °C -6.6% 6.27 kg / 13.82 LBS
6267.1 g / 61.5 N
100 °C -28.8% 4.78 kg / 10.53 LBS
4777.5 g / 46.9 N

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 14x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 24.41 kg / 53.82 LBS
5 843 Gs
3.66 kg / 8.07 LBS
3662 g / 35.9 N
N/A
1 mm 21.12 kg / 46.55 LBS
9 434 Gs
3.17 kg / 6.98 LBS
3167 g / 31.1 N
19.00 kg / 41.90 LBS
~0 Gs
2 mm 17.99 kg / 39.66 LBS
8 708 Gs
2.70 kg / 5.95 LBS
2699 g / 26.5 N
16.19 kg / 35.70 LBS
~0 Gs
3 mm 15.16 kg / 33.43 LBS
7 994 Gs
2.27 kg / 5.01 LBS
2274 g / 22.3 N
13.65 kg / 30.08 LBS
~0 Gs
5 mm 10.49 kg / 23.12 LBS
6 649 Gs
1.57 kg / 3.47 LBS
1573 g / 15.4 N
9.44 kg / 20.81 LBS
~0 Gs
10 mm 3.85 kg / 8.49 LBS
4 029 Gs
0.58 kg / 1.27 LBS
578 g / 5.7 N
3.47 kg / 7.64 LBS
~0 Gs
20 mm 0.57 kg / 1.25 LBS
1 545 Gs
0.08 kg / 0.19 LBS
85 g / 0.8 N
0.51 kg / 1.12 LBS
~0 Gs
50 mm 0.01 kg / 0.02 LBS
218 Gs
0.00 kg / 0.00 LBS
2 g / 0.0 N
0.01 kg / 0.02 LBS
~0 Gs
60 mm 0.00 kg / 0.01 LBS
139 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
70 mm 0.00 kg / 0.00 LBS
93 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
66 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
48 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
36 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 14x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 8.0 cm
Hearing aid 10 Gs (1.0 mT) 6.5 cm
Timepiece 20 Gs (2.0 mT) 5.0 cm
Mobile device 40 Gs (4.0 mT) 4.0 cm
Car key 50 Gs (5.0 mT) 3.5 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm

Table 8: Collisions (cracking risk) - warning
MW 14x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.66 km/h
(6.85 m/s)
0.27 J
30 mm 42.11 km/h
(11.70 m/s)
0.79 J
50 mm 54.36 km/h
(15.10 m/s)
1.32 J
100 mm 76.87 km/h
(21.35 m/s)
2.63 J

Table 9: Anti-corrosion coating durability
MW 14x10 / 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 14x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 7 886 Mx 78.9 µWb
Pc Coefficient 0.74 High (Stable)

Table 11: Physics of underwater searching
MW 14x10 / N38

Environment Effective steel pull Effect
Air (land) 6.71 kg Standard
Water (riverbed) 7.68 kg
(+0.97 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. Vertical hold

*Note: On a vertical wall, the magnet retains only approx. 20-30% of its perpendicular strength.

2. Steel saturation

*Thin steel (e.g. 0.5mm PC case) severely weakens the holding force.

3. Temperature resistance

*For N38 grade, the critical limit is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.74

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%
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: 010391-2026
Magnet Unit Converter
Force (pull)

Magnetic Induction

Other proposals

The offered product is an exceptionally strong cylinder magnet, composed of modern NdFeB material, which, at dimensions of Ø14x10 mm, guarantees optimal power. This specific item is characterized by high dimensional repeatability and industrial build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with significant force (approx. 6.71 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in modeling, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 65.83 N with a weight of only 11.55 g, this rod is indispensable in miniature devices and wherever every gram matters.
Since our magnets have a tolerance of ±0.1mm, 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 automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering an optimal price-to-power ratio and operational stability. If you need the strongest magnets in the same volume (Ø14x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 14 mm and height 10 mm. The value of 65.83 N means that the magnet is capable of holding a weight many times exceeding its own mass of 11.55 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 10 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.

Strengths as well as weaknesses of rare earth magnets.

Strengths

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • Their strength remains stable, and after approximately 10 years it decreases only by ~1% (theoretically),
  • They possess excellent resistance to weakening of magnetic properties due to external magnetic sources,
  • A magnet with a metallic nickel surface looks better,
  • Neodymium magnets create maximum magnetic induction on a small area, which allows for strong attraction,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures approaching 230°C and above...
  • Thanks to flexibility in forming and the capacity to customize to unusual requirements,
  • Universal use in modern technologies – they are used in mass storage devices, brushless drives, medical equipment, also industrial machines.
  • Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Disadvantages

Disadvantages of NdFeB magnets:
  • At very strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • We suggest cover - magnetic mount, due to difficulties in creating threads inside the magnet and complex forms.
  • Potential hazard related to microscopic parts of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, tiny parts of these devices are able to disrupt the diagnostic process medical after entering the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Optimal lifting capacity of a neodymium magnetwhat contributes to it?

Magnet power was determined for the most favorable conditions, including:
  • using a sheet made of low-carbon steel, acting as a circuit closing element
  • whose thickness equals approx. 10 mm
  • with an polished touching surface
  • under conditions of gap-free contact (metal-to-metal)
  • for force acting at a right angle (pull-off, not shear)
  • at standard ambient temperature

What influences lifting capacity in practice

In real-world applications, the real power is determined by many variables, presented from most significant:
  • Clearance – existence of any layer (rust, dirt, gap) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
  • Angle of force application – maximum parameter is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
  • Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Material type – the best choice is high-permeability steel. Cast iron may attract less.
  • Surface condition – smooth surfaces guarantee perfect abutment, which improves force. Uneven metal weaken the grip.
  • Temperature – temperature increase results in weakening of force. It is worth remembering 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 parallel forces the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

Warnings
Skin irritation risks

It is widely known that the nickel plating (the usual finish) is a common allergen. If you have an allergy, prevent touching magnets with bare hands and opt for encased magnets.

Fire warning

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

Safe operation

Exercise caution. Rare earth magnets act from a distance and connect with massive power, often quicker than you can move away.

Heat warning

Keep cool. Neodymium magnets are sensitive to temperature. If you need operation above 80°C, look for special high-temperature series (H, SH, UH).

GPS Danger

An intense magnetic field disrupts the functioning of magnetometers in smartphones and GPS navigation. Do not bring magnets close to a device to avoid breaking the sensors.

Bodily injuries

Big blocks can smash fingers in a fraction of a second. Never place your hand betwixt two attracting surfaces.

Shattering risk

Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Protect data

Avoid bringing magnets close to a purse, computer, or TV. The magnetism can destroy these devices and erase data from cards.

Implant safety

Warning for patients: Powerful magnets disrupt electronics. Maintain minimum 30 cm distance or request help to work with the magnets.

Choking Hazard

Product intended for adults. Tiny parts pose a choking risk, leading to serious injuries. Store away from children and animals.

Security! Learn more about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98