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MW 22x6 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010047

GTIN/EAN: 5906301810469

5.00

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

view properties »

6.11 ZŁ with VAT / pcs + price for transport

4.97 ZŁ net + 23% VAT / pcs

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Physical properties - 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
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 simulation of the product - report

Presented values are the result of a mathematical calculation. Results rely on algorithms for the material Nd2Fe14B. Real-world parameters might slightly differ. Treat these data as a supplementary guide when designing systems.

Table 1: Static 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
Pulling power weakens drastically per each millimeter of distance. Keep in mind that even the smallest gap (e.g., dirt, paint, dust) strongly reduces the pull force. Magnets work most effectively during direct contact; air break nullifies the power. Notice how rapidly the pull force fall, when the product does not touch tightly to the metal substrate. When designing the mounting, discard additional spacers.

Table 2: Slippage force (vertical surface)
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
The following data calculates the estimated holding capacity necessary to initiate the downward movement of the magnet down on a vertical steel wall (considering typical friction coefficient). This value depends on the distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - 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
When mounting a element on a upright surface (e.g., a board), it will only hold only approx. 20%-30% of nominal attraction strength. Gravitational force and a low friction coefficient cause that products move down easier than they pull off. Designing a hanger? Note that the sliding force is significantly lower than the perpendicular breakaway force. On a slippery surface, the magnet will slide down under a noticeably lighter cargo. Application of an anti-slip pad can drastically improve the result.

Table 4: Material efficiency (substrate influence) - sheet metal selection
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
A thin sheet is not enough to take in the entire magnetic field, which weakens actual performance of the holder. If you install a neodymium to a too thin substrate, the magnetism will penetrate right through and the pull force will drop sharply. To utilize 100% of this magnet's potential, you need a suitably thick element of steel. The material oversaturation means that on sheet metal structures (e.g., thin profiles), the magnet holds weaker. We advise picking the steel thickness from these parameters.

Table 5: Thermal resistance (material behavior) - power drop
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
Classic neodymiums lose strength after exceeding the maximum temperature. Protect against heat – heat can irreversibly destroy this magnet. With increasing heat, the neodymium's force momentarily lowers. Refrain from using this magnet close to heaters higher than its operating temperature limit. Exceeding the critical threshold will cause permanent loss of magnetism.
*Engineering note: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Flat magnets (low Pc) are more susceptible to demagnetization at lower temperatures than taller cylinders. Red status in the table indicates permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 22x6 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (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
Two magnetic products attract each other from a wider radius than a neodymium and metal combination. The setup of two magnets generates a stronger field and a further horizon of action. Designing a solid fastener? Apply two magnets instead of one magnet and a steel. Remember that when attracting two neodymiums, the impact force is huge. The repulsion force is marginally weaker than the attraction, but still impressive.
*Field value for N-N configuration drops to ~0 Gs in the exact middle of the gap (resulting from vector opposition).
* Estimates refer to shear force of dual matching magnets (friction coefficient ~0.15 for Ni-Ni layer).

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
Mechanical watch 20 Gs (2.0 mT) 6.0 cm
Mobile device 40 Gs (4.0 mT) 4.5 cm
Remote 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
Extremely neodym field is a large risk to IT equipment as well as pacemakers. These neodymiums generate a field that destroys function of digital equipment. Be aware: the unseen radiation passes through tissues and plastic. Exceptional care must be exercised by people with hearing aids and drug dispensers. Also at risk are: automatic timepieces, car keys, membranes, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - collision effects
MW 22x6 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.98 km/h
(6.94 m/s)
 0.41 J
30 mm 40.82 km/h
(11.34 m/s)
 1.10 J
50 mm 52.66 km/h
(14.63 m/s)
 1.83 J
100 mm 74.47 km/h
(20.69 m/s)
 3.66 J
NdFeB products are very brittle – a strong collision with metal causes immediate chipping. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Impact energy can trigger coating fragments or dangerous crushing to skin. Be sure to control the product during installation so it doesn't hit with great force against the steel surface. A collision at high speed almost guarantees destruction of the magnet. Wear safety glasses when handling with large magnets.

Table 9: Surface protection spec
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)
The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Moisture resistance is crucial for installations in bathrooms or outdoors.

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)
Total magnetic flux emitted by the magnet pole. Key data in coil applications and motors. The Pc coefficient defines the working geometry.

Table 11: Submerged application
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%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.
1. Shear force

*Warning: On a vertical surface, the magnet holds only a fraction of its perpendicular strength.

2. Plate thickness effect

*Thin metal sheet (e.g. computer case) drastically limits 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
Elemental analysis
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: 010047-2026
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This product is an extremely powerful cylinder magnet, made from modern NdFeB material, which, at dimensions of Ø22x6 mm, guarantees the highest energy density. The MW 22x6 / N38 component is characterized by high dimensional repeatability 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 warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is created for building electric motors, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power 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 best method is to glue them into holes with a slightly larger diameter (e.g., 22.1 mm) using epoxy glues. To ensure stability in automation, 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 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 in continuous sale in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 22 mm and height 6 mm. The value of 91.51 N means that the magnet is capable of holding a weight many times exceeding its own mass of 17.11 g. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 6 mm), which means that the N and S poles are located on the flat, circular surfaces. 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.

Pros and cons of neodymium magnets.

Benefits

Apart from their superior magnetic energy, neodymium magnets have these key benefits:
  • Their magnetic field remains stable, and after around ten years it decreases only by ~1% (according to research),
  • They retain their magnetic properties even under strong external field,
  • By covering with a shiny coating of gold, the element presents an nice look,
  • Neodymium magnets generate maximum magnetic induction on a small area, which ensures high operational effectiveness,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
  • Possibility of exact shaping as well as adjusting to precise applications,
  • Wide application in modern industrial fields – they serve a role in HDD drives, electric motors, medical equipment, and technologically advanced constructions.
  • Thanks to their power density, small magnets offer high operating force, with minimal size,

Cons

What to avoid - cons of neodymium magnets: tips and applications.
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a steel housing, which not only secures them against impacts but also increases their durability
  • Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop 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
  • They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of producing nuts in the magnet and complex shapes - recommended is a housing - magnet mounting.
  • Possible danger to health – tiny shards of magnets are risky, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small components of these devices are able to disrupt the diagnostic process medical in case of swallowing.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities

Holding force characteristics

Magnetic strength at its maximum – what contributes to it?

The specified lifting capacity concerns the maximum value, recorded under optimal environment, namely:
  • using a base made of low-carbon steel, functioning as a ideal flux conductor
  • with a thickness of at least 10 mm
  • characterized by even structure
  • under conditions of gap-free contact (metal-to-metal)
  • for force acting at a right angle (in the magnet axis)
  • at ambient temperature room level

Lifting capacity in practice – influencing factors

During everyday use, the actual holding force results from a number of factors, ranked from most significant:
  • Gap (between the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) results in a drastic drop in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
  • Loading method – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits much less (typically approx. 20-30% of nominal force).
  • Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
  • Chemical composition of the base – mild steel gives the best results. Alloy steels reduce magnetic properties and holding force.
  • Surface structure – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
  • Temperature influence – hot environment weakens pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, however under shearing force the lifting capacity is smaller. In addition, even a small distance between the magnet and the plate lowers the holding force.

H&S for magnets
Safe distance

Powerful magnetic fields can destroy records on payment cards, hard drives, and storage devices. Keep a distance of at least 10 cm.

ICD Warning

Life threat: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Allergy Warning

Some people have a sensitization to nickel, which is the standard coating for NdFeB magnets. Extended handling can result in skin redness. We suggest wear safety gloves.

Product not for children

Always keep magnets out of reach of children. Risk of swallowing is high, and the effects of magnets clamping inside the body are life-threatening.

Protective goggles

Despite the nickel coating, the material is delicate and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Safe operation

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

Crushing risk

Watch your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!

Dust is flammable

Fire hazard: Rare earth powder is explosive. Avoid machining magnets without safety gear as this risks ignition.

Do not overheat magnets

Watch the temperature. Exposing the magnet to high heat will permanently weaken its magnetic structure and pulling force.

Precision electronics

Remember: neodymium magnets generate a field that confuses precision electronics. Maintain a safe distance from your mobile, device, and navigation systems.

Caution! Details about hazards in the article: Safety of working with magnets.