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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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Technical of the product - 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

Technical analysis of the magnet - data

The following values are the direct effect of a engineering simulation. Values are based on models for the class Nd2Fe14B. Actual performance might slightly differ from theoretical values. Use these data as a reference point for designers.

Table 1: Static pull 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 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
medium risk
5 mm 2434 Gs
243.4 mT
5.03 kg / 11.09 lbs
5032.6 g / 49.4 N
medium risk
10 mm 1262 Gs
126.2 mT
1.35 kg / 2.98 lbs
1352.7 g / 13.3 N
low risk
15 mm 675 Gs
67.5 mT
0.39 kg / 0.85 lbs
387.3 g / 3.8 N
low risk
20 mm 388 Gs
38.8 mT
0.13 kg / 0.28 lbs
128.2 g / 1.3 N
low risk
30 mm 157 Gs
15.7 mT
0.02 kg / 0.05 lbs
20.9 g / 0.2 N
low risk
50 mm 43 Gs
4.3 mT
0.00 kg / 0.00 lbs
1.6 g / 0.0 N
low risk

Table 2: Sliding hold (vertical surface)
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 (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 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 (substrate influence) - sheet metal selection
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) - power drop
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: Two magnets (attraction) - forces in the system
MW 22x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (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) - 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 (cracking risk) - warning
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 (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%
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. Sliding resistance

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

2. Steel saturation

*Thin steel (e.g. computer case) severely weakens the holding force.

3. Thermal stability

*For N38 material, 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

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%
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
Pulling force

Magnetic Field

Other products

This product is an incredibly powerful cylinder magnet, produced from durable NdFeB material, which, with dimensions of Ø22x10 mm, guarantees the highest energy density. This specific item is characterized by 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. 14.75 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is ideal for building generators, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 144.65 N with a weight of only 28.51 g, this cylindrical magnet is indispensable in electronics 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., 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.
Magnets N38 are strong enough for the majority of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. 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 available off-the-shelf in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 22 mm and height 10 mm. 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 protects the surface against oxidation, giving it an aesthetic, silvery shine.
This cylinder 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.

Pros as well as cons of neodymium magnets.

Benefits

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (according to literature),
  • They maintain their magnetic properties even under close interference source,
  • The use of an shiny finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • They show high magnetic induction at the operating surface, which affects their effectiveness,
  • 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 precise modeling and optimizing to atypical requirements,
  • Huge importance in future technologies – they are commonly used in magnetic memories, motor assemblies, diagnostic systems, and technologically advanced constructions.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:
  • At strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their power 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
  • 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, in case of application outdoors
  • Due to limitations in realizing nuts and complicated shapes in magnets, we propose using casing - magnetic holder.
  • Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. Additionally, tiny parts of these magnets are able to disrupt the diagnostic process medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum lifting force for a neodymium magnet – what it depends on?

Breakaway force was determined for the most favorable conditions, assuming:
  • using a base made of low-carbon steel, functioning as a circuit closing element
  • whose thickness equals approx. 10 mm
  • with an polished contact surface
  • without the slightest clearance between the magnet and steel
  • for force acting at a right angle (in the magnet axis)
  • at room temperature

Lifting capacity in practice – influencing factors

Effective lifting capacity impacted by working environment parameters, mainly (from priority):
  • Air gap (between the magnet and the plate), because even a very small clearance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to varnish, corrosion or debris).
  • Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
  • Plate material – low-carbon steel gives the best results. Higher carbon content reduce magnetic permeability and holding force.
  • Smoothness – ideal contact is obtained only on polished steel. Any scratches and bumps create air cushions, reducing force.
  • Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a small distance between the magnet and the plate lowers the load capacity.

Warnings
Do not give to children

Absolutely store magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are very dangerous.

Shattering risk

Despite metallic appearance, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.

Metal Allergy

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If an allergic reaction appears, immediately stop working with magnets and wear gloves.

Physical harm

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

Electronic devices

Do not bring magnets close to a purse, laptop, or TV. The magnetic field can destroy these devices and wipe information from cards.

Handling rules

Exercise caution. Rare earth magnets attract from a distance and connect with massive power, often quicker than you can react.

Compass and GPS

A powerful magnetic field disrupts the operation of compasses in smartphones and navigation systems. Do not bring magnets close to a device to prevent damaging the sensors.

Flammability

Fire warning: Neodymium dust is explosive. Do not process magnets in home conditions as this risks ignition.

Medical implants

People with a pacemaker must maintain an safe separation from magnets. The magnetic field can interfere with the operation of the implant.

Heat warning

Regular neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. Damage is permanent.

Security! More info about risks in the article: Magnet Safety Guide.