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MW 22x6 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010047

GTIN/EAN: 5906301810469

5.00
Load capacity 9.33 kg / 91.51 N Magnetic Induction 296.78 mT / 2968 Gs
Diameter Ø
22 mm [±0,1 mm]
Height
6 mm [±0,1 mm]
Weight
17.11 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

4.97net / pcs

6.11 zł with VAT (23% VAT) / pcs

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Quantity
Net
Gross
price from 1 pcs
4.97 zł
6.11 zł
price from 150 pcs
4.67 zł
5.75 zł
price from 550 pcs
4.37 zł
5.38 zł

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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Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical - MW 22x6 / N38 - cylindrical magnet

Specification / characteristics - MW 22x6 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010047
GTIN/EAN 5906301810469
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 6 mm [±0,1 mm]
Weight 17.11 g
Magnetization Direction ↑ axial
Load capacity ~ ? 9.33 kg / 91.51 N
Magnetic Induction ~ ? 296.78 mT / 2968 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 22x6 / 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 simulation of the magnet - technical parameters

These information constitute the outcome of a engineering simulation. Results were calculated on algorithms for the material Nd2Fe14B. Operational performance may differ. Use these calculations as a preliminary roadmap when designing systems.

Table 1: Static pull force (force vs gap) - characteristics
MW 22x6 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2967 Gs
296.7 mT
9.33 kg / 20.57 LBS
9330.0 g / 91.5 N
medium risk
1 mm 2767 Gs
276.7 mT
8.12 kg / 17.89 LBS
8116.0 g / 79.6 N
medium risk
2 mm 2538 Gs
253.8 mT
6.82 kg / 15.05 LBS
6824.4 g / 66.9 N
medium risk
3 mm 2295 Gs
229.5 mT
5.58 kg / 12.30 LBS
5580.8 g / 54.7 N
medium risk
5 mm 1818 Gs
181.8 mT
3.50 kg / 7.73 LBS
3504.7 g / 34.4 N
medium risk
10 mm 938 Gs
93.8 mT
0.93 kg / 2.06 LBS
933.4 g / 9.2 N
weak grip
15 mm 492 Gs
49.2 mT
0.26 kg / 0.57 LBS
257.0 g / 2.5 N
weak grip
20 mm 277 Gs
27.7 mT
0.08 kg / 0.18 LBS
81.6 g / 0.8 N
weak grip
30 mm 108 Gs
10.8 mT
0.01 kg / 0.03 LBS
12.4 g / 0.1 N
weak grip
50 mm 29 Gs
2.9 mT
0.00 kg / 0.00 LBS
0.9 g / 0.0 N
weak grip

Table 2: Shear hold (wall)
MW 22x6 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.87 kg / 4.11 LBS
1866.0 g / 18.3 N
1 mm Stal (~0.2) 1.62 kg / 3.58 LBS
1624.0 g / 15.9 N
2 mm Stal (~0.2) 1.36 kg / 3.01 LBS
1364.0 g / 13.4 N
3 mm Stal (~0.2) 1.12 kg / 2.46 LBS
1116.0 g / 10.9 N
5 mm Stal (~0.2) 0.70 kg / 1.54 LBS
700.0 g / 6.9 N
10 mm Stal (~0.2) 0.19 kg / 0.41 LBS
186.0 g / 1.8 N
15 mm Stal (~0.2) 0.05 kg / 0.11 LBS
52.0 g / 0.5 N
20 mm Stal (~0.2) 0.02 kg / 0.04 LBS
16.0 g / 0.2 N
30 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 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) - vertical pull
MW 22x6 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
2.80 kg / 6.17 LBS
2799.0 g / 27.5 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.87 kg / 4.11 LBS
1866.0 g / 18.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.93 kg / 2.06 LBS
933.0 g / 9.2 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
4.67 kg / 10.28 LBS
4665.0 g / 45.8 N

Table 4: Material efficiency (substrate influence) - power losses
MW 22x6 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.93 kg / 2.06 LBS
933.0 g / 9.2 N
1 mm
25%
2.33 kg / 5.14 LBS
2332.5 g / 22.9 N
2 mm
50%
4.67 kg / 10.28 LBS
4665.0 g / 45.8 N
3 mm
75%
7.00 kg / 15.43 LBS
6997.5 g / 68.6 N
5 mm
100%
9.33 kg / 20.57 LBS
9330.0 g / 91.5 N
10 mm
100%
9.33 kg / 20.57 LBS
9330.0 g / 91.5 N
11 mm
100%
9.33 kg / 20.57 LBS
9330.0 g / 91.5 N
12 mm
100%
9.33 kg / 20.57 LBS
9330.0 g / 91.5 N

Table 5: Thermal stability (material behavior) - thermal limit
MW 22x6 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 9.33 kg / 20.57 LBS
9330.0 g / 91.5 N
OK
40 °C -2.2% 9.12 kg / 20.12 LBS
9124.7 g / 89.5 N
OK
60 °C -4.4% 8.92 kg / 19.66 LBS
8919.5 g / 87.5 N
80 °C -6.6% 8.71 kg / 19.21 LBS
8714.2 g / 85.5 N
100 °C -28.8% 6.64 kg / 14.65 LBS
6643.0 g / 65.2 N

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 22x6 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 20.63 kg / 45.48 LBS
4 566 Gs
3.09 kg / 6.82 LBS
3095 g / 30.4 N
N/A
1 mm 19.34 kg / 42.63 LBS
5 745 Gs
2.90 kg / 6.40 LBS
2901 g / 28.5 N
17.40 kg / 38.37 LBS
~0 Gs
2 mm 17.95 kg / 39.57 LBS
5 535 Gs
2.69 kg / 5.93 LBS
2692 g / 26.4 N
16.15 kg / 35.61 LBS
~0 Gs
3 mm 16.52 kg / 36.42 LBS
5 310 Gs
2.48 kg / 5.46 LBS
2478 g / 24.3 N
14.87 kg / 32.78 LBS
~0 Gs
5 mm 13.69 kg / 30.18 LBS
4 834 Gs
2.05 kg / 4.53 LBS
2053 g / 20.1 N
12.32 kg / 27.16 LBS
~0 Gs
10 mm 7.75 kg / 17.09 LBS
3 637 Gs
1.16 kg / 2.56 LBS
1162 g / 11.4 N
6.97 kg / 15.38 LBS
~0 Gs
20 mm 2.06 kg / 4.55 LBS
1 877 Gs
0.31 kg / 0.68 LBS
310 g / 3.0 N
1.86 kg / 4.10 LBS
~0 Gs
50 mm 0.07 kg / 0.15 LBS
336 Gs
0.01 kg / 0.02 LBS
10 g / 0.1 N
0.06 kg / 0.13 LBS
~0 Gs
60 mm 0.03 kg / 0.06 LBS
217 Gs
0.00 kg / 0.01 LBS
4 g / 0.0 N
0.02 kg / 0.05 LBS
~0 Gs
70 mm 0.01 kg / 0.03 LBS
147 Gs
0.00 kg / 0.00 LBS
2 g / 0.0 N
0.01 kg / 0.03 LBS
~0 Gs
80 mm 0.01 kg / 0.01 LBS
104 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
90 mm 0.00 kg / 0.01 LBS
76 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 / 0.00 LBS
57 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Safety (HSE) (implants) - warnings
MW 22x6 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 9.5 cm
Hearing aid 10 Gs (1.0 mT) 7.5 cm
Timepiece 20 Gs (2.0 mT) 6.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 4.5 cm
Car key 50 Gs (5.0 mT) 4.5 cm
Payment card 400 Gs (40.0 mT) 2.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm

Table 8: Dynamics (cracking risk) - warning
MW 22x6 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.74 km/h
(6.87 m/s)
0.40 J
30 mm 25.83 km/h
(7.17 m/s)
0.44 J
50 mm 25.85 km/h
(7.18 m/s)
0.44 J
100 mm 25.85 km/h
(7.18 m/s)
0.44 J

Table 9: Coating parameters (durability)
MW 22x6 / 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 22x6 / N38

Parameter Value SI Unit / Description
Magnetic Flux 12 337 Mx 123.4 µWb
Pc Coefficient 0.37 Low (Flat)

Table 11: Underwater work (magnet fishing)
MW 22x6 / N38

Environment Effective steel pull Effect
Air (land) 9.33 kg Standard
Water (riverbed) 10.68 kg
(+1.35 kg buoyancy gain)
+14.5%
Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

1. Vertical hold

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

2. Efficiency vs thickness

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

3. Thermal stability

*For standard magnets, the safety limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.37

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: 010047-2026
Magnet Unit Converter

Force (pull)


Magnetic Field

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The presented product is an exceptionally strong cylinder magnet, composed of advanced NdFeB material, which, at dimensions of Ø22x6 mm, guarantees the highest energy density. The MW 22x6 / N38 model is characterized by an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with significant force (approx. 9.33 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 91.51 N with a weight of only 17.11 g, this cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.
Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 22.1 mm) using epoxy glues. To ensure long-term durability in automation, anaerobic resins 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 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 (Ø22x6), 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 Ø22x6 mm, which, at a weight of 17.11 g, makes it an element with high magnetic energy density. The key parameter here is the holding force amounting to approximately 9.33 kg (force ~91.51 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 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 through the diameter if your project requires it.

Advantages as well as disadvantages of neodymium magnets.

Pros

Besides their high retention, neodymium magnets are valued for these benefits:
  • They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
  • They maintain their magnetic properties even under close interference source,
  • Thanks to the reflective finish, the coating of Ni-Cu-Ni, gold-plated, or silver gives an visually attractive appearance,
  • Magnets have exceptionally strong magnetic induction on the working surface,
  • Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to versatility in shaping and the ability to modify to complex applications,
  • Significant place in future technologies – they are utilized in computer drives, electromotive mechanisms, medical devices, also multitasking production systems.
  • Thanks to their power density, small magnets offer high operating force, with minimal size,

Limitations

Problematic aspects of neodymium magnets and proposals for their use:
  • To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • Neodymium magnets demagnetize 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 extremely resistant to heat
  • 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 cover - magnetic mount.
  • Possible danger to health – tiny shards 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 products can disrupt the diagnostic process medical after entering the body.
  • With budget limitations the cost of neodymium magnets is economically unviable,

Pull force analysis

Breakaway strength of the magnet in ideal conditionswhat it depends on?

Breakaway force is the result of a measurement for the most favorable conditions, taking into account:
  • with the application of a yoke made of low-carbon steel, ensuring full magnetic saturation
  • whose thickness reaches at least 10 mm
  • characterized by even structure
  • without the slightest insulating layer between the magnet and steel
  • during pulling in a direction perpendicular to the mounting surface
  • in stable room temperature

Practical lifting capacity: influencing factors

Real force is affected by specific conditions, including (from priority):
  • Distance – the presence of foreign body (rust, tape, gap) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
  • Steel thickness – insufficiently thick sheet does not accept the full field, causing part of the flux to be wasted to the other side.
  • Plate material – mild steel gives the best results. Alloy admixtures lower magnetic permeability and holding force.
  • Plate texture – smooth surfaces guarantee perfect abutment, which increases field saturation. Uneven metal weaken the grip.
  • Thermal environment – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.

Lifting capacity was measured using a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, in contrast under shearing force the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.

Safe handling of neodymium magnets
Safe operation

Be careful. Neodymium magnets attract from a distance and snap with massive power, often faster than you can react.

Electronic devices

Do not bring magnets close to a wallet, laptop, or TV. The magnetism can irreversibly ruin these devices and wipe information from cards.

Material brittleness

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

Keep away from electronics

Note: rare earth magnets generate a field that confuses sensitive sensors. Keep a separation from your phone, device, and navigation systems.

Fire warning

Combustion risk: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.

Pacemakers

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

Skin irritation risks

Certain individuals have a contact allergy to Ni, which is the common plating for NdFeB magnets. Frequent touching can result in a rash. We recommend use protective gloves.

Maximum temperature

Standard neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. The loss of strength is permanent.

Hand protection

Large magnets can smash fingers in a fraction of a second. Never place your hand betwixt two strong magnets.

Keep away from children

NdFeB magnets are not toys. Swallowing multiple magnets can lead to them attracting across intestines, which poses a severe health hazard and requires immediate surgery.

Warning! Looking for details? Check our post: Are neodymium magnets dangerous?