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MW 18x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010401

GTIN/EAN: 5906301811107

5.00

Diameter Ø

18 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

19.09 g

Magnetization Direction

↑ axial

Load capacity

10.76 kg / 105.51 N

Magnetic Induction

460.54 mT / 4605 Gs

Coating

[NiCuNi] Nickel

7.82 with VAT / pcs + price for transport

6.36 ZŁ net + 23% VAT / pcs

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Technical - MW 18x10 / N38 - cylindrical magnet

Specification / characteristics - MW 18x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010401
GTIN/EAN 5906301811107
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 18 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 19.09 g
Magnetization Direction ↑ axial
Load capacity ~ ? 10.76 kg / 105.51 N
Magnetic Induction ~ ? 460.54 mT / 4605 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 18x10 / 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 simulation of the product - report

The following values are the direct effect of a physical simulation. Results rely on models for the material Nd2Fe14B. Actual performance might slightly differ. Use these calculations as a supplementary guide when designing systems.

Table 1: Static force (force vs distance) - interaction chart
MW 18x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4604 Gs
460.4 mT
10.76 kg / 23.72 pounds
10760.0 g / 105.6 N
critical level
1 mm 4114 Gs
411.4 mT
8.59 kg / 18.94 pounds
8592.4 g / 84.3 N
medium risk
2 mm 3615 Gs
361.5 mT
6.64 kg / 14.63 pounds
6635.0 g / 65.1 N
medium risk
3 mm 3137 Gs
313.7 mT
5.00 kg / 11.01 pounds
4996.2 g / 49.0 N
medium risk
5 mm 2305 Gs
230.5 mT
2.70 kg / 5.95 pounds
2698.6 g / 26.5 N
medium risk
10 mm 1045 Gs
104.5 mT
0.55 kg / 1.22 pounds
555.0 g / 5.4 N
low risk
15 mm 517 Gs
51.7 mT
0.14 kg / 0.30 pounds
135.7 g / 1.3 N
low risk
20 mm 285 Gs
28.5 mT
0.04 kg / 0.09 pounds
41.1 g / 0.4 N
low risk
30 mm 110 Gs
11.0 mT
0.01 kg / 0.01 pounds
6.2 g / 0.1 N
low risk
50 mm 29 Gs
2.9 mT
0.00 kg / 0.00 pounds
0.4 g / 0.0 N
low risk

Table 2: Shear force (vertical surface)
MW 18x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 2.15 kg / 4.74 pounds
2152.0 g / 21.1 N
1 mm Stal (~0.2) 1.72 kg / 3.79 pounds
1718.0 g / 16.9 N
2 mm Stal (~0.2) 1.33 kg / 2.93 pounds
1328.0 g / 13.0 N
3 mm Stal (~0.2) 1.00 kg / 2.20 pounds
1000.0 g / 9.8 N
5 mm Stal (~0.2) 0.54 kg / 1.19 pounds
540.0 g / 5.3 N
10 mm Stal (~0.2) 0.11 kg / 0.24 pounds
110.0 g / 1.1 N
15 mm Stal (~0.2) 0.03 kg / 0.06 pounds
28.0 g / 0.3 N
20 mm Stal (~0.2) 0.01 kg / 0.02 pounds
8.0 g / 0.1 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N

Table 3: Vertical assembly (shearing) - vertical pull
MW 18x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
3.23 kg / 7.12 pounds
3228.0 g / 31.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
2.15 kg / 4.74 pounds
2152.0 g / 21.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
1.08 kg / 2.37 pounds
1076.0 g / 10.6 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
5.38 kg / 11.86 pounds
5380.0 g / 52.8 N

Table 4: Material efficiency (saturation) - sheet metal selection
MW 18x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
0.54 kg / 1.19 pounds
538.0 g / 5.3 N
1 mm
13%
1.35 kg / 2.97 pounds
1345.0 g / 13.2 N
2 mm
25%
2.69 kg / 5.93 pounds
2690.0 g / 26.4 N
3 mm
38%
4.04 kg / 8.90 pounds
4035.0 g / 39.6 N
5 mm
63%
6.73 kg / 14.83 pounds
6725.0 g / 66.0 N
10 mm
100%
10.76 kg / 23.72 pounds
10760.0 g / 105.6 N
11 mm
100%
10.76 kg / 23.72 pounds
10760.0 g / 105.6 N
12 mm
100%
10.76 kg / 23.72 pounds
10760.0 g / 105.6 N

Table 5: Thermal stability (material behavior) - resistance threshold
MW 18x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 10.76 kg / 23.72 pounds
10760.0 g / 105.6 N
OK
40 °C -2.2% 10.52 kg / 23.20 pounds
10523.3 g / 103.2 N
OK
60 °C -4.4% 10.29 kg / 22.68 pounds
10286.6 g / 100.9 N
OK
80 °C -6.6% 10.05 kg / 22.16 pounds
10049.8 g / 98.6 N
100 °C -28.8% 7.66 kg / 16.89 pounds
7661.1 g / 75.2 N

Table 6: Two magnets (repulsion) - forces in the system
MW 18x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 33.25 kg / 73.30 pounds
5 648 Gs
4.99 kg / 10.99 pounds
4987 g / 48.9 N
N/A
1 mm 29.87 kg / 65.85 pounds
8 727 Gs
4.48 kg / 9.88 pounds
4480 g / 44.0 N
26.88 kg / 59.27 pounds
~0 Gs
2 mm 26.55 kg / 58.53 pounds
8 228 Gs
3.98 kg / 8.78 pounds
3983 g / 39.1 N
23.90 kg / 52.68 pounds
~0 Gs
3 mm 23.41 kg / 51.62 pounds
7 727 Gs
3.51 kg / 7.74 pounds
3512 g / 34.5 N
21.07 kg / 46.46 pounds
~0 Gs
5 mm 17.84 kg / 39.33 pounds
6 744 Gs
2.68 kg / 5.90 pounds
2676 g / 26.3 N
16.06 kg / 35.40 pounds
~0 Gs
10 mm 8.34 kg / 18.38 pounds
4 611 Gs
1.25 kg / 2.76 pounds
1251 g / 12.3 N
7.50 kg / 16.54 pounds
~0 Gs
20 mm 1.71 kg / 3.78 pounds
2 091 Gs
0.26 kg / 0.57 pounds
257 g / 2.5 N
1.54 kg / 3.40 pounds
~0 Gs
50 mm 0.05 kg / 0.10 pounds
342 Gs
0.01 kg / 0.02 pounds
7 g / 0.1 N
0.04 kg / 0.09 pounds
~0 Gs
60 mm 0.02 kg / 0.04 pounds
221 Gs
0.00 kg / 0.01 pounds
3 g / 0.0 N
0.02 kg / 0.04 pounds
~0 Gs
70 mm 0.01 kg / 0.02 pounds
150 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.01 pounds
106 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.01 pounds
78 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
59 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Hazards (electronics) - warnings
MW 18x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 9.5 cm
Hearing aid 10 Gs (1.0 mT) 7.5 cm
Timepiece 20 Gs (2.0 mT) 6.0 cm
Mobile device 40 Gs (4.0 mT) 4.5 cm
Remote 50 Gs (5.0 mT) 4.5 cm
Payment card 400 Gs (40.0 mT) 2.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm

Table 8: Collisions (kinetic energy) - collision effects
MW 18x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.70 km/h
(6.86 m/s)
0.45 J
30 mm 41.49 km/h
(11.52 m/s)
1.27 J
50 mm 53.54 km/h
(14.87 m/s)
2.11 J
100 mm 75.72 km/h
(21.03 m/s)
4.22 J

Table 9: Surface protection spec
MW 18x10 / 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 18x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 11 828 Mx 118.3 µWb
Pc Coefficient 0.63 High (Stable)

Table 11: Underwater work (magnet fishing)
MW 18x10 / N38

Environment Effective steel pull Effect
Air (land) 10.76 kg Standard
Water (riverbed) 12.32 kg
(+1.56 kg buoyancy gain)
+14.5%
Warning: 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

*Note: On a vertical wall, the magnet holds just a fraction of its perpendicular strength.

2. Steel thickness impact

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

3. Power loss vs temp

*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) = 0.63

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%
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: 010401-2026
Quick Unit Converter
Pulling force

Magnetic Field

Other deals

The presented product is an extremely powerful cylinder magnet, composed of advanced NdFeB material, which, at dimensions of Ø18x10 mm, guarantees optimal power. This specific item boasts a tolerance of ±0.1mm and professional build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 10.76 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 105.51 N with a weight of only 19.09 g, this cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.
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., 18.1 mm) using two-component epoxy glues. To ensure long-term durability in automation, 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 industrial neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø18x10), 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 18 mm and height 10 mm. The key parameter here is the lifting capacity amounting to approximately 10.76 kg (force ~105.51 N), which, with such defined dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 10 mm), which means that the N and S poles are located on the flat, circular surfaces. 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.

Pros as well as cons of rare earth magnets.

Strengths

Besides their high retention, neodymium magnets are valued for these benefits:
  • They have unchanged lifting capacity, and over around ten years their attraction force decreases symbolically – ~1% (in testing),
  • Neodymium magnets prove to be extremely resistant to loss of magnetic properties caused by external interference,
  • By covering with a decorative layer of nickel, the element has an professional look,
  • Magnetic induction on the working layer of the magnet turns out to be strong,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
  • Due to the possibility of free molding and adaptation to individualized requirements, NdFeB magnets can be modeled in a wide range of geometric configurations, which makes them more universal,
  • Huge importance in modern industrial fields – they are used in HDD drives, motor assemblies, medical equipment, as well as other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in small systems

Cons

Disadvantages of neodymium magnets:
  • To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
  • Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • We suggest casing - magnetic holder, due to difficulties in creating threads inside the magnet and complicated forms.
  • Health risk related to microscopic parts of magnets can be dangerous, if swallowed, which is particularly important in the context of child health protection. Additionally, tiny parts of these devices are able to be problematic in diagnostics medical in case of swallowing.
  • With large orders the cost of neodymium magnets can be a barrier,

Pull force analysis

Optimal lifting capacity of a neodymium magnetwhat it depends on?

Holding force of 10.76 kg is a result of laboratory testing executed under standard conditions:
  • on a block made of mild steel, effectively closing the magnetic flux
  • whose thickness equals approx. 10 mm
  • characterized by even structure
  • under conditions of gap-free contact (surface-to-surface)
  • during detachment in a direction vertical to the mounting surface
  • at temperature approx. 20 degrees Celsius

Determinants of practical lifting force of a magnet

Please note that the application force will differ influenced by elements below, starting with the most relevant:
  • Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
  • Plate thickness – too thin plate does not close the flux, causing part of the flux to be escaped to the other side.
  • Metal type – different alloys reacts the same. Alloy additives weaken the attraction effect.
  • Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Operating temperature – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and in frost they can be stronger (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, in contrast under shearing force the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate decreases the lifting capacity.

Safe handling of NdFeB magnets
Conscious usage

Before starting, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.

Metal Allergy

Nickel alert: The nickel-copper-nickel coating consists of nickel. If an allergic reaction occurs, cease handling magnets and use protective gear.

Implant safety

People with a ICD must keep an large gap from magnets. The magnetism can disrupt the functioning of the life-saving device.

Electronic hazard

Avoid bringing magnets close to a wallet, laptop, or TV. The magnetic field can permanently damage these devices and erase data from cards.

Fragile material

Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.

Do not overheat magnets

Regular neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.

Pinching danger

Large magnets can break fingers in a fraction of a second. Do not put your hand betwixt two strong magnets.

Dust explosion hazard

Fire warning: Rare earth powder is explosive. Avoid machining magnets in home conditions as this may cause fire.

Choking Hazard

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

GPS Danger

A strong magnetic field disrupts the operation of magnetometers in phones and navigation systems. Do not bring magnets close to a device to prevent breaking the sensors.

Important! Want to know more? Check our post: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98