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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

bulk discounts:

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Lifting power as well as form of magnetic components can be verified on our magnetic calculator.

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Technical of the product - 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 magnet - report

These values represent the outcome of a mathematical calculation. Values were calculated on algorithms for the material Nd2Fe14B. Actual performance might slightly differ. Treat these data as a preliminary roadmap when designing systems.

Table 1: Static pull force (pull vs distance) - power drop
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 LBS
10760.0 g / 105.6 N
critical level
1 mm 4114 Gs
411.4 mT
8.59 kg / 18.94 LBS
8592.4 g / 84.3 N
warning
2 mm 3615 Gs
361.5 mT
6.64 kg / 14.63 LBS
6635.0 g / 65.1 N
warning
3 mm 3137 Gs
313.7 mT
5.00 kg / 11.01 LBS
4996.2 g / 49.0 N
warning
5 mm 2305 Gs
230.5 mT
2.70 kg / 5.95 LBS
2698.6 g / 26.5 N
warning
10 mm 1045 Gs
104.5 mT
0.55 kg / 1.22 LBS
555.0 g / 5.4 N
weak grip
15 mm 517 Gs
51.7 mT
0.14 kg / 0.30 LBS
135.7 g / 1.3 N
weak grip
20 mm 285 Gs
28.5 mT
0.04 kg / 0.09 LBS
41.1 g / 0.4 N
weak grip
30 mm 110 Gs
11.0 mT
0.01 kg / 0.01 LBS
6.2 g / 0.1 N
weak grip
50 mm 29 Gs
2.9 mT
0.00 kg / 0.00 LBS
0.4 g / 0.0 N
weak grip

Table 2: Vertical capacity (wall)
MW 18x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 2.15 kg / 4.74 LBS
2152.0 g / 21.1 N
1 mm Stal (~0.2) 1.72 kg / 3.79 LBS
1718.0 g / 16.9 N
2 mm Stal (~0.2) 1.33 kg / 2.93 LBS
1328.0 g / 13.0 N
3 mm Stal (~0.2) 1.00 kg / 2.20 LBS
1000.0 g / 9.8 N
5 mm Stal (~0.2) 0.54 kg / 1.19 LBS
540.0 g / 5.3 N
10 mm Stal (~0.2) 0.11 kg / 0.24 LBS
110.0 g / 1.1 N
15 mm Stal (~0.2) 0.03 kg / 0.06 LBS
28.0 g / 0.3 N
20 mm Stal (~0.2) 0.01 kg / 0.02 LBS
8.0 g / 0.1 N
30 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 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 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 LBS
3228.0 g / 31.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
2.15 kg / 4.74 LBS
2152.0 g / 21.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
1.08 kg / 2.37 LBS
1076.0 g / 10.6 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
5.38 kg / 11.86 LBS
5380.0 g / 52.8 N

Table 4: Material efficiency (substrate influence) - 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 LBS
538.0 g / 5.3 N
1 mm
13%
1.35 kg / 2.97 LBS
1345.0 g / 13.2 N
2 mm
25%
2.69 kg / 5.93 LBS
2690.0 g / 26.4 N
3 mm
38%
4.04 kg / 8.90 LBS
4035.0 g / 39.6 N
5 mm
63%
6.73 kg / 14.83 LBS
6725.0 g / 66.0 N
10 mm
100%
10.76 kg / 23.72 LBS
10760.0 g / 105.6 N
11 mm
100%
10.76 kg / 23.72 LBS
10760.0 g / 105.6 N
12 mm
100%
10.76 kg / 23.72 LBS
10760.0 g / 105.6 N

Table 5: Working in heat (stability) - power drop
MW 18x10 / N38

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

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 18x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 33.25 kg / 73.30 LBS
5 648 Gs
4.99 kg / 10.99 LBS
4987 g / 48.9 N
N/A
1 mm 29.87 kg / 65.85 LBS
8 727 Gs
4.48 kg / 9.88 LBS
4480 g / 44.0 N
26.88 kg / 59.27 LBS
~0 Gs
2 mm 26.55 kg / 58.53 LBS
8 228 Gs
3.98 kg / 8.78 LBS
3983 g / 39.1 N
23.90 kg / 52.68 LBS
~0 Gs
3 mm 23.41 kg / 51.62 LBS
7 727 Gs
3.51 kg / 7.74 LBS
3512 g / 34.5 N
21.07 kg / 46.46 LBS
~0 Gs
5 mm 17.84 kg / 39.33 LBS
6 744 Gs
2.68 kg / 5.90 LBS
2676 g / 26.3 N
16.06 kg / 35.40 LBS
~0 Gs
10 mm 8.34 kg / 18.38 LBS
4 611 Gs
1.25 kg / 2.76 LBS
1251 g / 12.3 N
7.50 kg / 16.54 LBS
~0 Gs
20 mm 1.71 kg / 3.78 LBS
2 091 Gs
0.26 kg / 0.57 LBS
257 g / 2.5 N
1.54 kg / 3.40 LBS
~0 Gs
50 mm 0.05 kg / 0.10 LBS
342 Gs
0.01 kg / 0.02 LBS
7 g / 0.1 N
0.04 kg / 0.09 LBS
~0 Gs
60 mm 0.02 kg / 0.04 LBS
221 Gs
0.00 kg / 0.01 LBS
3 g / 0.0 N
0.02 kg / 0.04 LBS
~0 Gs
70 mm 0.01 kg / 0.02 LBS
150 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
80 mm 0.00 kg / 0.01 LBS
106 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
90 mm 0.00 kg / 0.01 LBS
78 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
59 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 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
Mechanical watch 20 Gs (2.0 mT) 6.0 cm
Mobile device 40 Gs (4.0 mT) 4.5 cm
Car key 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: Impact energy (cracking risk) - warning
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: Corrosion resistance
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: Physics of underwater searching
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%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Shear force

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

2. Plate thickness effect

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

3. Temperature resistance

*For N38 material, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.63

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.

Engineering data and GPSR
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: 010401-2026
Magnet Unit Converter
Magnet pull force

Magnetic Field

Other deals

The presented product is an exceptionally strong rod magnet, composed of modern NdFeB material, which, at dimensions of Ø18x10 mm, guarantees optimal power. The MW 18x10 / N38 model features high dimensional repeatability and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 10.76 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is perfect for building electric motors, advanced sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the high power of 105.51 N with a weight of only 19.09 g, this cylindrical magnet is indispensable in electronics 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 precision component. 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 frequently chosen standard for industrial neodymium magnets, offering a great economic balance and operational stability. If you need even stronger 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.
This model is characterized by dimensions Ø18x10 mm, which, at a weight of 19.09 g, makes it an element with high magnetic energy density. The key parameter here is the holding force 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 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 18 mm. 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 through the diameter if your project requires it.

Strengths and weaknesses of rare earth magnets.

Advantages

Apart from their consistent magnetic energy, neodymium magnets have these key benefits:
  • They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
  • They are extremely resistant to demagnetization induced by external field influence,
  • By covering with a shiny layer of nickel, the element acquires an elegant look,
  • They feature high magnetic induction at the operating surface, making them more effective,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Thanks to the possibility of flexible molding and adaptation to custom needs, magnetic components can be produced in a broad palette of shapes and sizes, which amplifies use scope,
  • Wide application in modern industrial fields – they are used in magnetic memories, motor assemblies, medical devices, and modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which makes them useful in miniature devices

Weaknesses

Disadvantages of NdFeB magnets:
  • To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its 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
  • When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
  • Due to limitations in creating threads and complex forms in magnets, we recommend using casing - magnetic mount.
  • Possible danger to health – tiny shards of magnets are risky, if swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small elements of these devices are able to be problematic in diagnostics medical in case of swallowing.
  • With mass production the cost of neodymium magnets is economically unviable,

Lifting parameters

Maximum lifting capacity of the magnetwhat it depends on?

Magnet power was determined for ideal contact conditions, assuming:
  • using a sheet made of low-carbon steel, functioning as a ideal flux conductor
  • possessing a massiveness of at least 10 mm to ensure full flux closure
  • characterized by lack of roughness
  • without the slightest insulating layer between the magnet and steel
  • under perpendicular force vector (90-degree angle)
  • at room temperature

Practical lifting capacity: influencing factors

During everyday use, the actual lifting capacity is determined by a number of factors, ranked from crucial:
  • Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Material composition – different alloys attracts identically. Alloy additives weaken the attraction effect.
  • Smoothness – full contact is obtained only on smooth steel. Rough texture create air cushions, weakening the magnet.
  • Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the load capacity is reduced by as much as 75%. Additionally, even a small distance between the magnet and the plate lowers the lifting capacity.

Safe handling of NdFeB magnets
Heat sensitivity

Keep cool. NdFeB magnets are susceptible to heat. If you need operation above 80°C, inquire about HT versions (H, SH, UH).

Data carriers

Do not bring magnets close to a purse, computer, or TV. The magnetism can permanently damage these devices and erase data from cards.

Product not for children

These products are not suitable for play. Eating several magnets may result in them connecting inside the digestive tract, which poses a severe health hazard and requires immediate surgery.

Respect the power

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

Allergy Warning

Some people experience a hypersensitivity to Ni, which is the typical protective layer for neodymium magnets. Extended handling may cause skin redness. We recommend use protective gloves.

Magnetic interference

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

Crushing force

Protect your hands. Two powerful magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!

Machining danger

Mechanical processing of NdFeB material carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Shattering risk

Despite metallic appearance, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.

Medical implants

People with a pacemaker must maintain an large gap from magnets. The magnetic field can stop the operation of the implant.

Warning! More info about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98