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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 specification - 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

Engineering modeling of the magnet - technical parameters

Presented data constitute the outcome of a physical simulation. Results are based on models for the material Nd2Fe14B. Actual conditions may deviate from the simulation results. Please consider these data as a preliminary roadmap for designers.

Table 1: Static force (force vs distance) - characteristics
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
medium risk
2 mm 3615 Gs
361.5 mT
6.64 kg / 14.63 lbs
6635.0 g / 65.1 N
medium risk
3 mm 3137 Gs
313.7 mT
5.00 kg / 11.01 lbs
4996.2 g / 49.0 N
medium risk
5 mm 2305 Gs
230.5 mT
2.70 kg / 5.95 lbs
2698.6 g / 26.5 N
medium risk
10 mm 1045 Gs
104.5 mT
0.55 kg / 1.22 lbs
555.0 g / 5.4 N
low risk
15 mm 517 Gs
51.7 mT
0.14 kg / 0.30 lbs
135.7 g / 1.3 N
low risk
20 mm 285 Gs
28.5 mT
0.04 kg / 0.09 lbs
41.1 g / 0.4 N
low risk
30 mm 110 Gs
11.0 mT
0.01 kg / 0.01 lbs
6.2 g / 0.1 N
low risk
50 mm 29 Gs
2.9 mT
0.00 kg / 0.00 lbs
0.4 g / 0.0 N
low risk

Table 2: Sliding 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: Wall mounting (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 (saturation) - power losses
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: Thermal resistance (stability) - 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 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 (attraction) - 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 (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
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 (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: Anti-corrosion coating durability
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 (Pc)
MW 18x10 / N38

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

Table 11: Submerged application
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: 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

*Warning: On a vertical surface, the magnet holds only a fraction of its max power.

2. Efficiency vs thickness

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

3. Heat tolerance

*For N38 material, 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

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 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: 010401-2026
Magnet Unit Converter
Magnet pull force

Magnetic Induction

Other products

The offered product is an extremely powerful cylinder magnet, manufactured from durable NdFeB material, which, with dimensions of Ø18x10 mm, guarantees the highest energy density. This specific item 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 significant force (approx. 10.76 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power 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 very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 18.1 mm) using two-component epoxy glues. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel 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 available off-the-shelf in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 18 mm and height 10 mm. The value of 105.51 N means that the magnet is capable of holding a weight many times exceeding its own mass of 19.09 g. The product has a [NiCuNi] coating, which protects the surface against external factors, 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. 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 diametrically if your project requires it.

Advantages as well as disadvantages of rare earth magnets.

Benefits

Besides their tremendous strength, neodymium magnets offer the following advantages:
  • They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (based on calculations),
  • They are extremely resistant to demagnetization induced by presence of other magnetic fields,
  • Thanks to the smooth finish, the coating of nickel, gold-plated, or silver-plated gives an elegant appearance,
  • Magnets are distinguished by excellent magnetic induction on the active area,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Thanks to modularity in forming and the capacity to adapt to unusual requirements,
  • Versatile presence in electronics industry – they find application in data components, electric motors, diagnostic systems, as well as modern systems.
  • Thanks to their power density, small magnets offer high operating force, with minimal size,

Cons

Disadvantages of NdFeB magnets:
  • At very strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • Due to limitations in producing threads and complex forms in magnets, we recommend using cover - magnetic mechanism.
  • Possible danger resulting from small fragments of magnets are risky, when accidentally swallowed, which becomes key in the context of child safety. Furthermore, small elements of these devices can be problematic in diagnostics medical after entering the body.
  • With large orders the cost of neodymium magnets is economically unviable,

Holding force characteristics

Maximum lifting capacity of the magnetwhat affects it?

Holding force of 10.76 kg is a measurement result executed under the following configuration:
  • on a block made of mild steel, effectively closing the magnetic flux
  • with a cross-section of at least 10 mm
  • with a plane free of scratches
  • with total lack of distance (no coatings)
  • for force applied at a right angle (pull-off, not shear)
  • at ambient temperature approx. 20 degrees Celsius

Key elements affecting lifting force

In real-world applications, the actual holding force depends on several key aspects, ranked from crucial:
  • Distance – existence of foreign body (rust, tape, gap) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits much less (often approx. 20-30% of nominal force).
  • Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
  • Steel grade – the best choice is pure iron steel. Stainless steels may attract less.
  • Surface condition – smooth surfaces ensure maximum contact, which improves field saturation. Uneven metal weaken the grip.
  • Thermal environment – heating the magnet results in weakening of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under a perpendicular pulling force, in contrast under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.

Precautions when working with neodymium magnets
Do not drill into magnets

Fire hazard: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.

Metal Allergy

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction appears, immediately stop working with magnets and use protective gear.

Magnets are brittle

Beware of splinters. Magnets can explode upon violent connection, ejecting shards into the air. Wear goggles.

Thermal limits

Do not overheat. Neodymium magnets are susceptible to heat. If you require operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Threat to navigation

GPS units and smartphones are extremely susceptible to magnetic fields. Direct contact with a strong magnet can permanently damage the sensors in your phone.

Conscious usage

Be careful. Neodymium magnets attract from a long distance and snap with huge force, often faster than you can react.

Pacemakers

Warning for patients: Strong magnetic fields affect electronics. Keep minimum 30 cm distance or ask another person to work with the magnets.

No play value

NdFeB magnets are not intended for children. Eating several magnets can lead to them connecting inside the digestive tract, which constitutes a severe health hazard and requires urgent medical intervention.

Safe distance

Powerful magnetic fields can destroy records on payment cards, hard drives, and storage devices. Keep a distance of min. 10 cm.

Pinching danger

Big blocks can crush fingers instantly. Never place your hand betwixt two strong magnets.

Warning! Details about risks in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98