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MW 22x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010046

GTIN/EAN: 5906301810452

Load capacity 14.75 kg / 144.65 N Magnetic Induction 416.85 mT / 4168 Gs
Diameter Ø
22 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
28.51 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

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Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical details - MW 22x10 / N38 - cylindrical magnet

Specification / characteristics - MW 22x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010046
GTIN/EAN 5906301810452
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 22 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 28.51 g
Magnetization Direction ↑ axial
Load capacity ~ ? 14.75 kg / 144.65 N
Magnetic Induction ~ ? 416.85 mT / 4168 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 22x10 / N38 - cylindrical magnet
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working 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 310 °C
Curie Temperature TF 590 °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 modeling of the magnet - report

Presented values are the outcome of a mathematical analysis. Results rely on models for the class Nd2Fe14B. Real-world conditions may differ. Use these data as a preliminary roadmap during assembly planning.

Table 1: Static force (force vs distance) - interaction chart
MW 22x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4167 Gs
416.7 mT
14.75 kg / 32.52 lbs
14750.0 g / 144.7 N
dangerous!
1 mm 3823 Gs
382.3 mT
12.41 kg / 27.36 lbs
12412.2 g / 121.8 N
dangerous!
2 mm 3461 Gs
346.1 mT
10.18 kg / 22.43 lbs
10175.8 g / 99.8 N
dangerous!
3 mm 3102 Gs
310.2 mT
8.17 kg / 18.01 lbs
8171.3 g / 80.2 N
warning
5 mm 2434 Gs
243.4 mT
5.03 kg / 11.09 lbs
5032.6 g / 49.4 N
warning
10 mm 1262 Gs
126.2 mT
1.35 kg / 2.98 lbs
1352.7 g / 13.3 N
weak grip
15 mm 675 Gs
67.5 mT
0.39 kg / 0.85 lbs
387.3 g / 3.8 N
weak grip
20 mm 388 Gs
38.8 mT
0.13 kg / 0.28 lbs
128.2 g / 1.3 N
weak grip
30 mm 157 Gs
15.7 mT
0.02 kg / 0.05 lbs
20.9 g / 0.2 N
weak grip
50 mm 43 Gs
4.3 mT
0.00 kg / 0.00 lbs
1.6 g / 0.0 N
weak grip

Table 2: Sliding load (wall)
MW 22x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 2.95 kg / 6.50 lbs
2950.0 g / 28.9 N
1 mm Stal (~0.2) 2.48 kg / 5.47 lbs
2482.0 g / 24.3 N
2 mm Stal (~0.2) 2.04 kg / 4.49 lbs
2036.0 g / 20.0 N
3 mm Stal (~0.2) 1.63 kg / 3.60 lbs
1634.0 g / 16.0 N
5 mm Stal (~0.2) 1.01 kg / 2.22 lbs
1006.0 g / 9.9 N
10 mm Stal (~0.2) 0.27 kg / 0.60 lbs
270.0 g / 2.6 N
15 mm Stal (~0.2) 0.08 kg / 0.17 lbs
78.0 g / 0.8 N
20 mm Stal (~0.2) 0.03 kg / 0.06 lbs
26.0 g / 0.3 N
30 mm Stal (~0.2) 0.00 kg / 0.01 lbs
4.0 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 22x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
4.43 kg / 9.76 lbs
4425.0 g / 43.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
2.95 kg / 6.50 lbs
2950.0 g / 28.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
1.48 kg / 3.25 lbs
1475.0 g / 14.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
7.38 kg / 16.26 lbs
7375.0 g / 72.3 N

Table 4: Steel thickness (substrate influence) - power losses
MW 22x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
0.74 kg / 1.63 lbs
737.5 g / 7.2 N
1 mm
13%
1.84 kg / 4.06 lbs
1843.8 g / 18.1 N
2 mm
25%
3.69 kg / 8.13 lbs
3687.5 g / 36.2 N
3 mm
38%
5.53 kg / 12.19 lbs
5531.3 g / 54.3 N
5 mm
63%
9.22 kg / 20.32 lbs
9218.8 g / 90.4 N
10 mm
100%
14.75 kg / 32.52 lbs
14750.0 g / 144.7 N
11 mm
100%
14.75 kg / 32.52 lbs
14750.0 g / 144.7 N
12 mm
100%
14.75 kg / 32.52 lbs
14750.0 g / 144.7 N

Table 5: Working in heat (stability) - resistance threshold
MW 22x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 14.75 kg / 32.52 lbs
14750.0 g / 144.7 N
OK
40 °C -2.2% 14.43 kg / 31.80 lbs
14425.5 g / 141.5 N
OK
60 °C -4.4% 14.10 kg / 31.09 lbs
14101.0 g / 138.3 N
80 °C -6.6% 13.78 kg / 30.37 lbs
13776.5 g / 135.1 N
100 °C -28.8% 10.50 kg / 23.15 lbs
10502.0 g / 103.0 N

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 22x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 40.70 kg / 89.72 lbs
5 428 Gs
6.10 kg / 13.46 lbs
6105 g / 59.9 N
N/A
1 mm 37.49 kg / 82.64 lbs
7 999 Gs
5.62 kg / 12.40 lbs
5623 g / 55.2 N
33.74 kg / 74.38 lbs
~0 Gs
2 mm 34.25 kg / 75.50 lbs
7 645 Gs
5.14 kg / 11.33 lbs
5137 g / 50.4 N
30.82 kg / 67.95 lbs
~0 Gs
3 mm 31.10 kg / 68.56 lbs
7 285 Gs
4.66 kg / 10.28 lbs
4664 g / 45.8 N
27.99 kg / 61.70 lbs
~0 Gs
5 mm 25.22 kg / 55.60 lbs
6 561 Gs
3.78 kg / 8.34 lbs
3783 g / 37.1 N
22.70 kg / 50.04 lbs
~0 Gs
10 mm 13.89 kg / 30.61 lbs
4 868 Gs
2.08 kg / 4.59 lbs
2083 g / 20.4 N
12.50 kg / 27.55 lbs
~0 Gs
20 mm 3.73 kg / 8.23 lbs
2 524 Gs
0.56 kg / 1.23 lbs
560 g / 5.5 N
3.36 kg / 7.41 lbs
~0 Gs
50 mm 0.13 kg / 0.30 lbs
480 Gs
0.02 kg / 0.04 lbs
20 g / 0.2 N
0.12 kg / 0.27 lbs
~0 Gs
60 mm 0.06 kg / 0.13 lbs
314 Gs
0.01 kg / 0.02 lbs
9 g / 0.1 N
0.05 kg / 0.11 lbs
~0 Gs
70 mm 0.03 kg / 0.06 lbs
216 Gs
0.00 kg / 0.01 lbs
4 g / 0.0 N
0.02 kg / 0.05 lbs
~0 Gs
80 mm 0.01 kg / 0.03 lbs
154 Gs
0.00 kg / 0.00 lbs
2 g / 0.0 N
0.01 kg / 0.03 lbs
~0 Gs
90 mm 0.01 kg / 0.02 lbs
114 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
100 mm 0.00 kg / 0.01 lbs
86 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs

Table 7: Safety (HSE) (implants) - warnings
MW 22x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 11.0 cm
Hearing aid 10 Gs (1.0 mT) 9.0 cm
Mechanical watch 20 Gs (2.0 mT) 7.0 cm
Mobile device 40 Gs (4.0 mT) 5.5 cm
Remote 50 Gs (5.0 mT) 5.0 cm
Payment card 400 Gs (40.0 mT) 2.0 cm
HDD hard drive 600 Gs (60.0 mT) 2.0 cm

Table 8: Impact energy (kinetic energy) - collision effects
MW 22x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 23.34 km/h
(6.48 m/s)
0.60 J
30 mm 24.38 km/h
(6.77 m/s)
0.65 J
50 mm 24.40 km/h
(6.78 m/s)
0.65 J
100 mm 24.41 km/h
(6.78 m/s)
0.66 J

Table 9: Surface protection spec
MW 22x10 / 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 22x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 16 172 Mx 161.7 µWb
Pc Coefficient 0.55 Low (Flat)

Table 11: Submerged application
MW 22x10 / N38

Environment Effective steel pull Effect
Air (land) 14.75 kg Standard
Water (riverbed) 16.89 kg
(+2.14 kg buoyancy gain)
+14.5%
Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

1. Vertical hold

*Caution: On a vertical wall, the magnet retains just ~20% of its max power.

2. Efficiency vs thickness

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

3. Thermal stability

*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) = 0.55

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.

Engineering data and GPSR

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%

Environmental data

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: 010046-2026
Quick Unit Converter

Force (pull)


Magnetic Induction

Other proposals

The offered product is an exceptionally strong cylinder magnet, composed of durable NdFeB material, which, with dimensions of Ø22x10 mm, guarantees optimal power. The MW 22x10 / N38 component features an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 14.75 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Additionally, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is ideal for building electric motors, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the pull force of 144.65 N with a weight of only 28.51 g, this rod is indispensable in electronics and wherever every gram matters.
Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 22.1 mm) using two-component epoxy glues. To ensure stability in industry, 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 an optimal price-to-power ratio and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø22x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 22 mm and height 10 mm. The key parameter here is the lifting capacity amounting to approximately 14.75 kg (force ~144.65 N), which, with such defined dimensions, proves the high power of the NdFeB material. 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. 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.

Advantages and disadvantages of rare earth magnets.

Advantages

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They do not lose power, even during around ten years – the drop in strength is only ~1% (according to tests),
  • They do not lose their magnetic properties even under strong external field,
  • By using a reflective layer of silver, the element has an nice look,
  • Magnetic induction on the surface of the magnet remains very high,
  • 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...
  • Possibility of detailed modeling and adapting to defined applications,
  • Significant place in advanced technology sectors – they are used in magnetic memories, drive modules, diagnostic systems, as well as technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which makes them useful in miniature devices

Limitations

Disadvantages of NdFeB magnets:
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also improves its resistance to damage
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • Due to limitations in realizing threads and complicated shapes in magnets, we recommend using casing - magnetic holder.
  • Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that tiny parts of these devices are able to be problematic in diagnostics medical in case of swallowing.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Optimal lifting capacity of a neodymium magnetwhat contributes to it?

The force parameter is a measurement result executed under the following configuration:
  • on a base made of structural steel, effectively closing the magnetic flux
  • whose transverse dimension equals approx. 10 mm
  • with a surface perfectly flat
  • with total lack of distance (no coatings)
  • during pulling in a direction vertical to the plane
  • at conditions approx. 20°C

Practical aspects of lifting capacity – factors

It is worth knowing that the application force may be lower depending on elements below, in order of importance:
  • Distance (between the magnet and the plate), because even a very small distance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
  • Steel thickness – too thin steel causes magnetic saturation, causing part of the flux to be escaped into the air.
  • Material composition – different alloys reacts the same. High carbon content weaken the interaction with the magnet.
  • Plate texture – smooth surfaces ensure maximum contact, which improves field saturation. Rough surfaces reduce efficiency.
  • Thermal environment – heating the magnet causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under perpendicular forces, in contrast under shearing force the load capacity is reduced by as much as fivefold. In addition, even a slight gap between the magnet and the plate lowers the load capacity.

Safety rules for work with NdFeB magnets
Allergy Warning

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If an allergic reaction occurs, immediately stop handling magnets and wear gloves.

Bone fractures

Big blocks can crush fingers instantly. Do not put your hand betwixt two strong magnets.

Dust explosion hazard

Mechanical processing of neodymium magnets poses a fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Precision electronics

Remember: rare earth magnets produce a field that disrupts sensitive sensors. Maintain a safe distance from your mobile, tablet, and GPS.

Protective goggles

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Clashing of two magnets leads to them cracking into small pieces.

No play value

These products are not intended for children. Accidental ingestion of multiple magnets may result in them attracting across intestines, which constitutes a severe health hazard and requires urgent medical intervention.

Handling rules

Exercise caution. Neodymium magnets act from a long distance and connect with huge force, often faster than you can react.

Power loss in heat

Do not overheat. Neodymium magnets are sensitive to heat. If you need resistance above 80°C, look for HT versions (H, SH, UH).

Keep away from computers

Equipment safety: Neodymium magnets can damage payment cards and sensitive devices (pacemakers, medical aids, mechanical watches).

Medical interference

Medical warning: Strong magnets can turn off heart devices and defibrillators. Stay away if you have medical devices.

Warning! Looking for details? Read our article: Are neodymium magnets dangerous?