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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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Physical properties - 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
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 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 analysis of the product - report

Presented information constitute the result of a engineering calculation. Results are based on models for the class Nd2Fe14B. Operational performance might slightly differ from theoretical values. Treat these data as a supplementary guide during assembly planning.

Table 1: Static force (pull vs gap) - power drop
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
critical level
1 mm 3823 Gs
382.3 mT
12.41 kg / 27.36 LBS
12412.2 g / 121.8 N
critical level
2 mm 3461 Gs
346.1 mT
10.18 kg / 22.43 LBS
10175.8 g / 99.8 N
critical level
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 force (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: Material efficiency (saturation) - 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) Sliding 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: Hazards (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
Car key 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: Dynamics (kinetic energy) - warning
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: Coating parameters (durability)
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: Underwater work (magnet fishing)
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%
Warning: 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 merely a fraction of its max power.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) drastically reduces the holding force.

3. Power loss vs temp

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.55

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: 010046-2026
Measurement Calculator

Pulling force


Field Strength

Other offers

The offered product is an extremely powerful rod magnet, composed of advanced NdFeB material, which, at dimensions of Ø22x10 mm, guarantees maximum efficiency. The MW 22x10 / N38 model is characterized by high dimensional repeatability and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet 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 triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 144.65 N with a weight of only 28.51 g, this rod is indispensable in miniature devices and wherever every gram matters.
Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 22.1 mm) using two-component epoxy glues. To ensure long-term durability in industry, specialized industrial adhesives are used, which do not react with the nickel coating 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 high resistance to demagnetization. If you need even stronger 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 store.
This model is characterized by dimensions Ø22x10 mm, which, at a weight of 28.51 g, makes it an element with high magnetic energy density. The value of 144.65 N means that the magnet is capable of holding a weight many times exceeding its own mass of 28.51 g. The product has a [NiCuNi] coating, which secures it 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.

Pros and cons of Nd2Fe14B magnets.

Pros

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They do not lose strength, even over around 10 years – the reduction in power is only ~1% (according to tests),
  • Magnets very well defend themselves against demagnetization caused by ambient magnetic noise,
  • Thanks to the shimmering finish, the coating of nickel, gold-plated, or silver gives an modern appearance,
  • Neodymium magnets deliver maximum magnetic induction on a small surface, which increases force concentration,
  • Neodymium magnets are characterized by extremely 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...
  • Possibility of accurate modeling and optimizing to complex requirements,
  • Fundamental importance in future technologies – they are utilized in hard drives, brushless drives, medical devices, and industrial machines.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons

Disadvantages of NdFeB magnets:
  • They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we advise using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in producing threads and complicated shapes in magnets, we propose using cover - magnetic mechanism.
  • Possible danger resulting from small fragments of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. It is also worth noting that tiny parts of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
  • Due to neodymium price, their price exceeds standard values,

Pull force analysis

Maximum lifting capacity of the magnetwhat it depends on?

The force parameter is a result of laboratory testing performed under specific, ideal conditions:
  • with the use of a sheet made of low-carbon steel, ensuring full magnetic saturation
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • with an polished touching surface
  • without the slightest insulating layer between the magnet and steel
  • for force acting at a right angle (in the magnet axis)
  • at room temperature

Lifting capacity in real conditions – factors

Real force impacted by specific conditions, such as (from priority):
  • Space between magnet and steel – every millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Direction of force – maximum parameter is reached only during pulling at a 90° angle. The force required to slide of the magnet along the surface is typically many times lower (approx. 1/5 of the lifting capacity).
  • Steel thickness – too thin sheet does not close the flux, causing part of the power to be wasted into the air.
  • Steel type – low-carbon steel attracts best. Alloy steels reduce magnetic permeability and lifting capacity.
  • Base smoothness – the more even the surface, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
  • Thermal environment – heating the magnet causes a temporary drop 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 a perpendicular pulling force, whereas under parallel forces the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate lowers the load capacity.

Safety rules for work with NdFeB magnets
Danger to pacemakers

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

Immense force

Handle magnets consciously. Their immense force can shock even experienced users. Be vigilant and do not underestimate their force.

Serious injuries

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

Warning for allergy sufferers

It is widely known that nickel (standard magnet coating) is a potent allergen. For allergy sufferers, prevent touching magnets with bare hands and select encased magnets.

Precision electronics

GPS units and smartphones are highly susceptible to magnetism. Close proximity with a strong magnet can ruin the sensors in your phone.

Data carriers

Do not bring magnets close to a purse, computer, or screen. The magnetism can permanently damage these devices and wipe information from cards.

Magnet fragility

Beware of splinters. Magnets can fracture upon violent connection, ejecting sharp fragments into the air. Wear goggles.

Do not give to children

Adult use only. Tiny parts can be swallowed, causing intestinal necrosis. Store away from children and animals.

Thermal limits

Standard neodymium magnets (N-type) lose power when the temperature surpasses 80°C. The loss of strength is permanent.

Machining danger

Fire warning: Rare earth powder is highly flammable. Avoid machining magnets in home conditions as this risks ignition.

Safety First! Want to know more? Read our article: Why are neodymium magnets dangerous?