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MW 22x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010046

GTIN/EAN: 5906301810452

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

11.30 with VAT / pcs + price for transport

9.19 ZŁ net + 23% VAT / pcs

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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 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

Physical modeling of the magnet - report

These values constitute the result of a mathematical simulation. Results were calculated on algorithms for the material Nd2Fe14B. Operational parameters may differ from theoretical values. Please consider these calculations as a supplementary guide for designers.

Table 1: Static force (pull vs gap) - 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 pounds
14750.0 g / 144.7 N
crushing
1 mm 3823 Gs
382.3 mT
12.41 kg / 27.36 pounds
12412.2 g / 121.8 N
crushing
2 mm 3461 Gs
346.1 mT
10.18 kg / 22.43 pounds
10175.8 g / 99.8 N
crushing
3 mm 3102 Gs
310.2 mT
8.17 kg / 18.01 pounds
8171.3 g / 80.2 N
strong
5 mm 2434 Gs
243.4 mT
5.03 kg / 11.09 pounds
5032.6 g / 49.4 N
strong
10 mm 1262 Gs
126.2 mT
1.35 kg / 2.98 pounds
1352.7 g / 13.3 N
weak grip
15 mm 675 Gs
67.5 mT
0.39 kg / 0.85 pounds
387.3 g / 3.8 N
weak grip
20 mm 388 Gs
38.8 mT
0.13 kg / 0.28 pounds
128.2 g / 1.3 N
weak grip
30 mm 157 Gs
15.7 mT
0.02 kg / 0.05 pounds
20.9 g / 0.2 N
weak grip
50 mm 43 Gs
4.3 mT
0.00 kg / 0.00 pounds
1.6 g / 0.0 N
weak grip

Table 2: Slippage 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 pounds
2950.0 g / 28.9 N
1 mm Stal (~0.2) 2.48 kg / 5.47 pounds
2482.0 g / 24.3 N
2 mm Stal (~0.2) 2.04 kg / 4.49 pounds
2036.0 g / 20.0 N
3 mm Stal (~0.2) 1.63 kg / 3.60 pounds
1634.0 g / 16.0 N
5 mm Stal (~0.2) 1.01 kg / 2.22 pounds
1006.0 g / 9.9 N
10 mm Stal (~0.2) 0.27 kg / 0.60 pounds
270.0 g / 2.6 N
15 mm Stal (~0.2) 0.08 kg / 0.17 pounds
78.0 g / 0.8 N
20 mm Stal (~0.2) 0.03 kg / 0.06 pounds
26.0 g / 0.3 N
30 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N

Table 3: Wall mounting (sliding) - vertical pull
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 pounds
4425.0 g / 43.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
2.95 kg / 6.50 pounds
2950.0 g / 28.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
1.48 kg / 3.25 pounds
1475.0 g / 14.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
7.38 kg / 16.26 pounds
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 pounds
737.5 g / 7.2 N
1 mm
13%
1.84 kg / 4.06 pounds
1843.8 g / 18.1 N
2 mm
25%
3.69 kg / 8.13 pounds
3687.5 g / 36.2 N
3 mm
38%
5.53 kg / 12.19 pounds
5531.3 g / 54.3 N
5 mm
63%
9.22 kg / 20.32 pounds
9218.8 g / 90.4 N
10 mm
100%
14.75 kg / 32.52 pounds
14750.0 g / 144.7 N
11 mm
100%
14.75 kg / 32.52 pounds
14750.0 g / 144.7 N
12 mm
100%
14.75 kg / 32.52 pounds
14750.0 g / 144.7 N

Table 5: Thermal stability (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 pounds
14750.0 g / 144.7 N
OK
40 °C -2.2% 14.43 kg / 31.80 pounds
14425.5 g / 141.5 N
OK
60 °C -4.4% 14.10 kg / 31.09 pounds
14101.0 g / 138.3 N
80 °C -6.6% 13.78 kg / 30.37 pounds
13776.5 g / 135.1 N
100 °C -28.8% 10.50 kg / 23.15 pounds
10502.0 g / 103.0 N

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

Table 7: Hazards (electronics) - precautionary measures
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
Phone / Smartphone 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: Impact energy (kinetic energy) - collision effects
MW 22x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.22 km/h
(6.73 m/s)
0.65 J
30 mm 39.77 km/h
(11.05 m/s)
1.74 J
50 mm 51.30 km/h
(14.25 m/s)
2.89 J
100 mm 72.54 km/h
(20.15 m/s)
5.79 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: Construction data (Pc)
MW 22x10 / N38

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

Table 11: Hydrostatics and buoyancy
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: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Wall mount (shear)

*Warning: On a vertical wall, the magnet retains just approx. 20-30% of its max power.

2. Steel saturation

*Thin metal sheet (e.g. computer case) severely limits the holding force.

3. Heat tolerance

*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

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
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%
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
Magnet Unit Converter
Pulling force

Magnetic Field

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The offered product is an extremely powerful rod magnet, made from modern NdFeB material, which, at dimensions of Ø22x10 mm, guarantees the highest energy density. The MW 22x10 / N38 model is characterized by high dimensional repeatability and professional build quality, making it an excellent 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. Moreover, its triple-layer Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. 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 low weight is crucial.
Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Magnets NdFeB grade N38 are strong enough for the majority of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. 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 available off-the-shelf in our store.
This model is characterized by dimensions Ø22x10 mm, which, at a weight of 28.51 g, makes it an element with impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 14.75 kg (force ~144.65 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against oxidation, 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 22 mm. Such an arrangement is standard 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 neodymium magnets.

Pros

Besides their immense pulling force, neodymium magnets offer the following advantages:
  • They do not lose power, even over nearly ten years – the decrease in power is only ~1% (theoretically),
  • Magnets effectively defend themselves against loss of magnetization caused by external fields,
  • A magnet with a metallic gold surface has an effective appearance,
  • The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
  • Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
  • Possibility of individual modeling as well as optimizing to complex applications,
  • Fundamental importance in future technologies – they serve a role in data components, brushless drives, advanced medical instruments, also technologically advanced constructions.
  • Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Disadvantages

Cons of neodymium magnets and proposals for their use:
  • At very strong impacts they can break, therefore we advise placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
  • Due to limitations in realizing nuts and complex forms in magnets, we recommend using casing - magnetic mechanism.
  • Health risk resulting from small fragments of magnets are risky, if swallowed, which becomes key in the context of child health protection. It is also worth noting that small components of these devices are able to disrupt the diagnostic process medical in case of swallowing.
  • Due to neodymium price, their price is higher than average,

Lifting parameters

Magnetic strength at its maximum – what contributes to it?

Breakaway force is the result of a measurement for ideal contact conditions, assuming:
  • on a block made of mild steel, effectively closing the magnetic flux
  • whose thickness reaches at least 10 mm
  • with an ground touching surface
  • with direct contact (without coatings)
  • during detachment in a direction vertical to the plane
  • at temperature approx. 20 degrees Celsius

Key elements affecting lifting force

Effective lifting capacity is influenced by working environment parameters, such as (from most important):
  • Air gap (betwixt the magnet and the plate), because even a very small distance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
  • Direction of force – maximum parameter is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the surface is usually many times lower (approx. 1/5 of the lifting capacity).
  • Plate thickness – too thin steel causes magnetic saturation, causing part of the power to be wasted into the air.
  • Material composition – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
  • Surface quality – the more even the plate, the better the adhesion and stronger the hold. Roughness creates an air distance.
  • Thermal factor – hot environment reduces pulling force. Too high temperature can permanently damage the magnet.

Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the lifting capacity is smaller. Moreover, even a small distance between the magnet and the plate reduces the holding force.

Precautions when working with neodymium magnets
ICD Warning

For implant holders: Powerful magnets disrupt medical devices. Keep at least 30 cm distance or request help to work with the magnets.

Keep away from children

Absolutely keep magnets out of reach of children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are fatal.

Cards and drives

Avoid bringing magnets near a purse, laptop, or screen. The magnetism can irreversibly ruin these devices and wipe information from cards.

Precision electronics

Be aware: rare earth magnets generate a field that disrupts precision electronics. Maintain a separation from your phone, device, and navigation systems.

Pinching danger

Big blocks can break fingers in a fraction of a second. Under no circumstances put your hand betwixt two attracting surfaces.

Dust is flammable

Mechanical processing of NdFeB material poses a fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Protective goggles

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

Metal Allergy

Certain individuals have a contact allergy to Ni, which is the common plating for NdFeB magnets. Frequent touching might lead to a rash. It is best to wear safety gloves.

Immense force

Exercise caution. Rare earth magnets attract from a long distance and snap with huge force, often quicker than you can move away.

Operating temperature

Avoid heat. Neodymium magnets are sensitive to temperature. If you require operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Danger! Learn more about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98