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MW 10x8 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010013

GTIN/EAN: 5906301810124

5.00

Diameter Ø

10 mm [±0,1 mm]

Height

8 mm [±0,1 mm]

Weight

4.71 g

Magnetization Direction

↑ axial

Load capacity

3.38 kg / 33.16 N

Magnetic Induction

525.10 mT / 5251 Gs

Coating

[NiCuNi] Nickel

2.18 with VAT / pcs + price for transport

1.770 ZŁ net + 23% VAT / pcs

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Technical details - MW 10x8 / N38 - cylindrical magnet

Specification / characteristics - MW 10x8 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010013
GTIN/EAN 5906301810124
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 10 mm [±0,1 mm]
Height 8 mm [±0,1 mm]
Weight 4.71 g
Magnetization Direction ↑ axial
Load capacity ~ ? 3.38 kg / 33.16 N
Magnetic Induction ~ ? 525.10 mT / 5251 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x8 / 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 analysis of the assembly - data

Presented data constitute the outcome of a engineering simulation. Values were calculated on algorithms for the material Nd2Fe14B. Actual performance might slightly differ from theoretical values. Treat these data as a reference point during assembly planning.

Table 1: Static pull force (pull vs distance) - interaction chart
MW 10x8 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5247 Gs
524.7 mT
3.38 kg / 7.45 LBS
3380.0 g / 33.2 N
warning
1 mm 4204 Gs
420.4 mT
2.17 kg / 4.78 LBS
2169.6 g / 21.3 N
warning
2 mm 3243 Gs
324.3 mT
1.29 kg / 2.85 LBS
1291.0 g / 12.7 N
weak grip
3 mm 2454 Gs
245.4 mT
0.74 kg / 1.63 LBS
739.6 g / 7.3 N
weak grip
5 mm 1403 Gs
140.3 mT
0.24 kg / 0.53 LBS
241.5 g / 2.4 N
weak grip
10 mm 428 Gs
42.8 mT
0.02 kg / 0.05 LBS
22.5 g / 0.2 N
weak grip
15 mm 177 Gs
17.7 mT
0.00 kg / 0.01 LBS
3.8 g / 0.0 N
weak grip
20 mm 89 Gs
8.9 mT
0.00 kg / 0.00 LBS
1.0 g / 0.0 N
weak grip
30 mm 31 Gs
3.1 mT
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
weak grip
50 mm 8 Gs
0.8 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip

Table 2: Shear load (vertical surface)
MW 10x8 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.68 kg / 1.49 LBS
676.0 g / 6.6 N
1 mm Stal (~0.2) 0.43 kg / 0.96 LBS
434.0 g / 4.3 N
2 mm Stal (~0.2) 0.26 kg / 0.57 LBS
258.0 g / 2.5 N
3 mm Stal (~0.2) 0.15 kg / 0.33 LBS
148.0 g / 1.5 N
5 mm Stal (~0.2) 0.05 kg / 0.11 LBS
48.0 g / 0.5 N
10 mm Stal (~0.2) 0.00 kg / 0.01 LBS
4.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 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 (shearing) - vertical pull
MW 10x8 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
1.01 kg / 2.24 LBS
1014.0 g / 9.9 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.68 kg / 1.49 LBS
676.0 g / 6.6 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.34 kg / 0.75 LBS
338.0 g / 3.3 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.69 kg / 3.73 LBS
1690.0 g / 16.6 N

Table 4: Material efficiency (saturation) - sheet metal selection
MW 10x8 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.34 kg / 0.75 LBS
338.0 g / 3.3 N
1 mm
25%
0.85 kg / 1.86 LBS
845.0 g / 8.3 N
2 mm
50%
1.69 kg / 3.73 LBS
1690.0 g / 16.6 N
3 mm
75%
2.54 kg / 5.59 LBS
2535.0 g / 24.9 N
5 mm
100%
3.38 kg / 7.45 LBS
3380.0 g / 33.2 N
10 mm
100%
3.38 kg / 7.45 LBS
3380.0 g / 33.2 N
11 mm
100%
3.38 kg / 7.45 LBS
3380.0 g / 33.2 N
12 mm
100%
3.38 kg / 7.45 LBS
3380.0 g / 33.2 N

Table 5: Thermal resistance (stability) - power drop
MW 10x8 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 3.38 kg / 7.45 LBS
3380.0 g / 33.2 N
OK
40 °C -2.2% 3.31 kg / 7.29 LBS
3305.6 g / 32.4 N
OK
60 °C -4.4% 3.23 kg / 7.12 LBS
3231.3 g / 31.7 N
OK
80 °C -6.6% 3.16 kg / 6.96 LBS
3156.9 g / 31.0 N
100 °C -28.8% 2.41 kg / 5.31 LBS
2406.6 g / 23.6 N

Table 6: Two magnets (attraction) - field range
MW 10x8 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 13.33 kg / 29.39 LBS
5 906 Gs
2.00 kg / 4.41 LBS
2000 g / 19.6 N
N/A
1 mm 10.82 kg / 23.85 LBS
9 454 Gs
1.62 kg / 3.58 LBS
1623 g / 15.9 N
9.74 kg / 21.47 LBS
~0 Gs
2 mm 8.56 kg / 18.86 LBS
8 408 Gs
1.28 kg / 2.83 LBS
1284 g / 12.6 N
7.70 kg / 16.98 LBS
~0 Gs
3 mm 6.65 kg / 14.65 LBS
7 410 Gs
1.00 kg / 2.20 LBS
997 g / 9.8 N
5.98 kg / 13.19 LBS
~0 Gs
5 mm 3.86 kg / 8.52 LBS
5 650 Gs
0.58 kg / 1.28 LBS
580 g / 5.7 N
3.48 kg / 7.67 LBS
~0 Gs
10 mm 0.95 kg / 2.10 LBS
2 805 Gs
0.14 kg / 0.32 LBS
143 g / 1.4 N
0.86 kg / 1.89 LBS
~0 Gs
20 mm 0.09 kg / 0.20 LBS
857 Gs
0.01 kg / 0.03 LBS
13 g / 0.1 N
0.08 kg / 0.18 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
101 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
60 mm 0.00 kg / 0.00 LBS
63 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
70 mm 0.00 kg / 0.00 LBS
42 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
80 mm 0.00 kg / 0.00 LBS
29 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
90 mm 0.00 kg / 0.00 LBS
21 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
100 mm 0.00 kg / 0.00 LBS
16 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Safety (HSE) (electronics) - warnings
MW 10x8 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 6.0 cm
Hearing aid 10 Gs (1.0 mT) 5.0 cm
Mechanical watch 20 Gs (2.0 mT) 4.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 3.0 cm
Car key 50 Gs (5.0 mT) 3.0 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm

Table 8: Impact energy (kinetic energy) - collision effects
MW 10x8 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 27.13 km/h
(7.54 m/s)
0.13 J
30 mm 46.80 km/h
(13.00 m/s)
0.40 J
50 mm 60.41 km/h
(16.78 m/s)
0.66 J
100 mm 85.43 km/h
(23.73 m/s)
1.33 J

Table 9: Coating parameters (durability)
MW 10x8 / 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 10x8 / N38

Parameter Value SI Unit / Description
Magnetic Flux 4 183 Mx 41.8 µWb
Pc Coefficient 0.79 High (Stable)

Table 11: Submerged application
MW 10x8 / N38

Environment Effective steel pull Effect
Air (land) 3.38 kg Standard
Water (riverbed) 3.87 kg
(+0.49 kg buoyancy gain)
+14.5%
Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Sliding resistance

*Warning: On a vertical wall, the magnet retains only approx. 20-30% of its nominal pull.

2. Efficiency vs thickness

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

3. Power loss vs temp

*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) = 0.79

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.

Engineering data and GPSR
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: 010013-2026
Magnet Unit Converter
Pulling force

Magnetic Induction

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The presented product is an incredibly powerful cylinder magnet, produced from durable NdFeB material, which, with dimensions of Ø10x8 mm, guarantees maximum efficiency. This specific item boasts high dimensional repeatability and industrial build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 3.38 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Moreover, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 33.16 N with a weight of only 4.71 g, this rod is indispensable in electronics and wherever every gram matters.
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., 10.1 mm) using epoxy glues. To ensure stability in automation, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Magnets NdFeB grade N38 are suitable for 90% of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø10x8), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 10 mm and height 8 mm. The key parameter here is the holding force amounting to approximately 3.38 kg (force ~33.16 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 10 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.

Advantages and disadvantages of neodymium magnets.

Advantages

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
  • Magnets perfectly defend themselves against loss of magnetization caused by external fields,
  • A magnet with a shiny gold surface has an effective appearance,
  • Neodymium magnets generate maximum magnetic induction on a contact point, which ensures high operational effectiveness,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures approaching 230°C and above...
  • Considering the possibility of precise shaping and adaptation to unique requirements, magnetic components can be produced in a variety of shapes and sizes, which increases their versatility,
  • Wide application in future technologies – they are commonly used in magnetic memories, motor assemblies, advanced medical instruments, and industrial machines.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Cons

Drawbacks and weaknesses of neodymium magnets and proposals for their use:
  • To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
  • Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
  • We recommend cover - magnetic mechanism, due to difficulties in producing threads inside the magnet and complicated forms.
  • Potential hazard related to microscopic parts of magnets pose a threat, if swallowed, which gains importance in the context of child safety. Additionally, tiny parts of these magnets can disrupt the diagnostic process medical after entering the body.
  • With large orders the cost of neodymium magnets is a challenge,

Holding force characteristics

Maximum lifting capacity of the magnetwhat affects it?

Information about lifting capacity was defined for optimal configuration, including:
  • with the application of a yoke made of special test steel, guaranteeing maximum field concentration
  • possessing a massiveness of minimum 10 mm to ensure full flux closure
  • with a plane free of scratches
  • without any air gap between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • in stable room temperature

Impact of factors on magnetic holding capacity in practice

In practice, the actual lifting capacity is determined by a number of factors, listed from crucial:
  • Distance – the presence of any layer (paint, tape, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
  • Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Metal type – not every steel attracts identically. Alloy additives worsen the attraction effect.
  • Base smoothness – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Operating temperature – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was carried out on a smooth plate of optimal thickness, under a perpendicular pulling force, in contrast under shearing force the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate decreases the holding force.

Safety rules for work with neodymium magnets
Hand protection

Pinching hazard: The attraction force is so great that it can result in blood blisters, crushing, and broken bones. Use thick gloves.

Phone sensors

An intense magnetic field interferes with the operation of magnetometers in smartphones and navigation systems. Maintain magnets close to a smartphone to prevent damaging the sensors.

Allergic reactions

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If skin irritation occurs, cease working with magnets and use protective gear.

Eye protection

NdFeB magnets are sintered ceramics, which means they are fragile like glass. Clashing of two magnets leads to them breaking into shards.

Medical implants

Warning for patients: Strong magnetic fields affect medical devices. Maintain at least 30 cm distance or request help to work with the magnets.

Respect the power

Use magnets with awareness. Their huge power can shock even experienced users. Plan your moves and do not underestimate their force.

Threat to electronics

Powerful magnetic fields can erase data on payment cards, hard drives, and storage devices. Stay away of min. 10 cm.

Product not for children

Absolutely store magnets away from children. Risk of swallowing is high, and the consequences of magnets clamping inside the body are tragic.

Machining danger

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

Heat sensitivity

Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and strength.

Security! 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