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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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Force and structure of magnets can be estimated using our magnetic calculator.

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Detailed specification - 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 simulation of the product - data

These information constitute the result of a engineering calculation. Results are based on algorithms for the class Nd2Fe14B. Operational performance may deviate from the simulation results. Use these calculations as a preliminary roadmap for designers.

Table 1: Static pull force (pull vs gap) - characteristics
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
strong
5 mm 2434 Gs
243.4 mT
5.03 kg / 11.09 lbs
5032.6 g / 49.4 N
strong
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: Slippage hold (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: Wall mounting (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: Thermal resistance (stability) - thermal limit
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) - field range
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) (electronics) - 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
Timepiece 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 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: Electrical 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: Physics of underwater searching
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. Wall mount (shear)

*Warning: On a vertical wall, the magnet holds merely ~20% of its max power.

2. Plate thickness effect

*Thin metal sheet (e.g. 0.5mm PC case) significantly limits the holding force.

3. Thermal stability

*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 specification and ecology
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%
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: 010046-2026
Quick Unit Converter
Pulling force

Field Strength

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This product is a very strong cylindrical magnet, composed of advanced NdFeB material, which, at dimensions of Ø22x10 mm, guarantees maximum efficiency. This specific item features an accuracy of ±0.1mm and professional build quality, making it an excellent solution for professional 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. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
This model is ideal for building generators, advanced sensors, and efficient magnetic separators, 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 miniature devices and wherever every gram matters.
Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure long-term durability 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 popular standard for industrial neodymium magnets, offering a great economic balance and operational stability. 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.
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 protects the surface against external factors, 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. 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 as well as cons of rare earth magnets.

Strengths

Besides their stability, neodymium magnets are valued for these benefits:
  • They have unchanged lifting capacity, and over around ten years their attraction force decreases symbolically – ~1% (according to theory),
  • They are extremely resistant to demagnetization induced by external magnetic fields,
  • A magnet with a metallic gold surface is more attractive,
  • They show high magnetic induction at the operating surface, which affects their effectiveness,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures reaching 230°C and above...
  • Thanks to versatility in designing and the ability to adapt to complex applications,
  • Versatile presence in innovative solutions – they are utilized in hard drives, motor assemblies, precision medical tools, as well as multitasking production systems.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Drawbacks and weaknesses of neodymium magnets: application proposals
  • They are prone to damage 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
  • NdFeB magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and 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
  • Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • We recommend cover - magnetic holder, due to difficulties in realizing nuts inside the magnet and complex forms.
  • Health risk related to microscopic parts of magnets pose a threat, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, small elements of these products can be problematic in diagnostics medical when they are in the body.
  • With large orders the cost of neodymium magnets can be a barrier,

Holding force characteristics

Maximum lifting capacity of the magnetwhat it depends on?

The declared magnet strength represents the limit force, obtained under optimal environment, namely:
  • on a block made of structural steel, effectively closing the magnetic flux
  • with a cross-section no less than 10 mm
  • with a surface cleaned and smooth
  • without the slightest insulating layer between the magnet and steel
  • during pulling in a direction perpendicular to the plane
  • in neutral thermal conditions

What influences lifting capacity in practice

Bear in mind that the magnet holding may be lower subject to elements below, in order of importance:
  • Distance – the presence of foreign body (paint, tape, gap) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
  • Loading method – declared lifting capacity refers to detachment vertically. When slipping, the magnet holds much less (often approx. 20-30% of nominal force).
  • Steel thickness – insufficiently thick sheet does not accept the full field, causing part of the flux to be lost to the other side.
  • Metal type – different alloys attracts identically. High carbon content weaken the interaction with the magnet.
  • Smoothness – ideal contact is possible only on polished steel. Any scratches and bumps create air cushions, reducing force.
  • Heat – NdFeB sinters have a negative temperature coefficient. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.

H&S for magnets
Handling guide

Handle magnets with awareness. Their immense force can surprise even professionals. Be vigilant and do not underestimate their power.

Risk of cracking

Neodymium magnets are ceramic materials, which means they are very brittle. Collision of two magnets leads to them cracking into shards.

Threat to navigation

Navigation devices and smartphones are extremely sensitive to magnetism. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Metal Allergy

A percentage of the population suffer from a hypersensitivity to Ni, which is the common plating for NdFeB magnets. Prolonged contact can result in a rash. We recommend use protective gloves.

Magnetic media

Device Safety: Neodymium magnets can damage payment cards and delicate electronics (heart implants, medical aids, mechanical watches).

Medical interference

Medical warning: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.

Operating temperature

Control the heat. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and strength.

Product not for children

Product intended for adults. Tiny parts can be swallowed, leading to serious injuries. Store away from children and animals.

Hand protection

Watch your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, destroying anything in their path. Be careful!

Fire warning

Machining of neodymium magnets poses a fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Caution! 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