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MW 10x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010004

GTIN/EAN: 5906301810032

5.00

Diameter Ø

10 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

5.89 g

Magnetization Direction

↑ axial

Load capacity

3.18 kg / 31.15 N

Magnetic Induction

553.84 mT / 5538 Gs

Coating

[NiCuNi] Nickel

4.31 with VAT / pcs + price for transport

3.50 ZŁ net + 23% VAT / pcs

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MW 10x10 / N38 - cylindrical magnet

Specification / characteristics MW 10x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010004
GTIN/EAN 5906301810032
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 10 mm [±0,1 mm]
Weight 5.89 g
Magnetization Direction ↑ axial
Load capacity ~ ? 3.18 kg / 31.15 N
Magnetic Induction ~ ? 553.84 mT / 5538 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x10 / 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 data represent the result of a engineering simulation. Results are based on algorithms for the class Nd2Fe14B. Operational parameters might slightly differ from theoretical values. Treat these calculations as a reference point when designing systems.

Table 1: Static force (pull vs distance) - power drop
MW 10x10 / N38
Distance (mm) Induction (Gauss) / mT Pull Force (kg) Risk Status
0 mm 5534 Gs
553.4 mT
3.18 kg / 3180.0 g
31.2 N
strong
1 mm 4428 Gs
442.8 mT
2.04 kg / 2036.1 g
20.0 N
strong
2 mm 3420 Gs
342.0 mT
1.21 kg / 1214.8 g
11.9 N
low risk
3 mm 2597 Gs
259.7 mT
0.70 kg / 700.2 g
6.9 N
low risk
5 mm 1498 Gs
149.8 mT
0.23 kg / 232.9 g
2.3 N
low risk
10 mm 469 Gs
46.9 mT
0.02 kg / 22.9 g
0.2 N
low risk
15 mm 198 Gs
19.8 mT
0.00 kg / 4.1 g
0.0 N
low risk
20 mm 101 Gs
10.1 mT
0.00 kg / 1.1 g
0.0 N
low risk
30 mm 36 Gs
3.6 mT
0.00 kg / 0.1 g
0.0 N
low risk
50 mm 9 Gs
0.9 mT
0.00 kg / 0.0 g
0.0 N
low risk
Table 2: Shear force (wall)
MW 10x10 / N38
Distance (mm) Friction coefficient Pull Force (kg)
0 mm Stal (~0.2) 0.64 kg / 636.0 g
6.2 N
1 mm Stal (~0.2) 0.41 kg / 408.0 g
4.0 N
2 mm Stal (~0.2) 0.24 kg / 242.0 g
2.4 N
3 mm Stal (~0.2) 0.14 kg / 140.0 g
1.4 N
5 mm Stal (~0.2) 0.05 kg / 46.0 g
0.5 N
10 mm Stal (~0.2) 0.00 kg / 4.0 g
0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.0 g
0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.0 g
0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.0 g
0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.0 g
0.0 N
Table 3: Vertical assembly (shearing) - vertical pull
MW 10x10 / N38
Surface type Friction coefficient / % Mocy Max load (kg)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.95 kg / 954.0 g
9.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.64 kg / 636.0 g
6.2 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.32 kg / 318.0 g
3.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.59 kg / 1590.0 g
15.6 N
Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 10x10 / N38
Steel thickness (mm) % power Real pull force (kg)
0.5 mm
10%
0.32 kg / 318.0 g
3.1 N
1 mm
25%
0.80 kg / 795.0 g
7.8 N
2 mm
50%
1.59 kg / 1590.0 g
15.6 N
5 mm
100%
3.18 kg / 3180.0 g
31.2 N
10 mm
100%
3.18 kg / 3180.0 g
31.2 N
Table 5: Working in heat (stability) - thermal limit
MW 10x10 / N38
Ambient temp. (°C) Power loss Remaining pull Status
20 °C 0.0% 3.18 kg / 3180.0 g
31.2 N
OK
40 °C -2.2% 3.11 kg / 3110.0 g
30.5 N
OK
60 °C -4.4% 3.04 kg / 3040.1 g
29.8 N
OK
80 °C -6.6% 2.97 kg / 2970.1 g
29.1 N
100 °C -28.8% 2.26 kg / 2264.2 g
22.2 N
Table 6: Two magnets (repulsion) - field collision
MW 10x10 / N38
Gap (mm) Attraction (kg) (N-S) Repulsion (kg) (N-N)
0 mm 14.83 kg / 14830 g
145.5 N
6 003 Gs
N/A
1 mm 12.01 kg / 12012 g
117.8 N
9 962 Gs
10.81 kg / 10811 g
106.1 N
~0 Gs
2 mm 9.50 kg / 9495 g
93.1 N
8 857 Gs
8.55 kg / 8546 g
83.8 N
~0 Gs
3 mm 7.38 kg / 7381 g
72.4 N
7 809 Gs
6.64 kg / 6643 g
65.2 N
~0 Gs
5 mm 4.31 kg / 4311 g
42.3 N
5 968 Gs
3.88 kg / 3880 g
38.1 N
~0 Gs
10 mm 1.09 kg / 1086 g
10.7 N
2 996 Gs
0.98 kg / 978 g
9.6 N
~0 Gs
20 mm 0.11 kg / 107 g
1.0 N
939 Gs
0.10 kg / 96 g
0.9 N
~0 Gs
50 mm 0.00 kg / 2 g
0.0 N
116 Gs
0.00 kg / 0 g
0.0 N
~0 Gs
Table 7: Protective zones (electronics) - precautionary measures
MW 10x10 / N38
Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 6.5 cm
Hearing aid 10 Gs (1.0 mT) 5.0 cm
Timepiece 20 Gs (2.0 mT) 4.0 cm
Mobile device 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: Dynamics (cracking risk) - collision effects
MW 10x10 / N38
Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 23.54 km/h
(6.54 m/s)
0.13 J
30 mm 40.59 km/h
(11.27 m/s)
0.37 J
50 mm 52.40 km/h
(14.56 m/s)
0.62 J
100 mm 74.10 km/h
(20.58 m/s)
1.25 J
Table 9: Coating parameters (durability)
MW 10x10 / 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 10x10 / N38
Parameter Value SI Unit / Description
Magnetic Flux 4 481 Mx 44.8 µWb
Pc Coefficient 0.89 High (Stable)
Table 11: Submerged application
MW 10x10 / N38
Environment Effective steel pull Effect
Air (land) 3.18 kg Standard
Water (riverbed) 3.64 kg
(+0.46 kg Buoyancy gain)
+14.5%
Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Shear force

*Caution: On a vertical wall, the magnet retains just a fraction of its perpendicular strength.

2. Efficiency vs thickness

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

3. Thermal stability

*For N38 grade, the critical limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.89

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: 010004-2025
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Pulling force

Magnetic Field

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The presented product is a very strong cylindrical magnet, produced from durable NdFeB material, which, with dimensions of Ø10x10 mm, guarantees the highest energy density. The MW 10x10 / N38 component is characterized by an accuracy of ±0.1mm and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 3.18 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 31.15 N with a weight of only 5.89 g, this rod is indispensable in miniature devices and wherever low weight is crucial.
Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this precision 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.
Magnets NdFeB grade N38 are suitable for the majority of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø10x10), 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 Ø10x10 mm, which, at a weight of 5.89 g, makes it an element with impressive magnetic energy density. The value of 31.15 N means that the magnet is capable of holding a weight many times exceeding its own mass of 5.89 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 10 mm), which means that the N and S poles are located on the flat, circular surfaces. 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 rare earth magnets.

Pros
Apart from their notable holding force, neodymium magnets have these key benefits:
  • They retain magnetic properties for almost ten years – the drop is just ~1% (according to analyses),
  • They have excellent resistance to weakening of magnetic properties as a result of external magnetic sources,
  • By using a lustrous coating of silver, the element has an proper look,
  • The surface of neodymium magnets generates a intense magnetic field – this is one of their assets,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
  • Possibility of precise shaping and modifying to precise applications,
  • Fundamental importance in innovative solutions – they serve a role in hard drives, electromotive mechanisms, precision medical tools, and technologically advanced constructions.
  • Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,
Cons
Disadvantages of NdFeB magnets:
  • At strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Limited possibility of producing threads in the magnet and complicated shapes - preferred is casing - magnetic holder.
  • Potential hazard resulting from small fragments of magnets are risky, if swallowed, which gains importance in the context of child health protection. Furthermore, tiny parts of these devices can be problematic in diagnostics medical in case of swallowing.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Lifting parameters

Highest magnetic holding forcewhat contributes to it?
The lifting capacity listed is a measurement result performed under standard conditions:
  • on a block made of mild steel, effectively closing the magnetic field
  • possessing a thickness of minimum 10 mm to avoid saturation
  • with an ideally smooth contact surface
  • under conditions of no distance (surface-to-surface)
  • under axial force vector (90-degree angle)
  • at standard ambient temperature
Determinants of practical lifting force of a magnet
Real force is affected by specific conditions, such as (from priority):
  • Air gap (betwixt the magnet and the plate), since even a tiny distance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to varnish, corrosion or dirt).
  • Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of nominal force).
  • Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
  • Steel grade – ideal substrate is high-permeability steel. Hardened steels may generate lower lifting capacity.
  • Surface structure – the more even the plate, the better the adhesion and stronger the hold. Roughness creates an air distance.
  • Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under perpendicular forces, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate decreases the holding force.

Precautions when working with NdFeB magnets
Warning for allergy sufferers

Some people have a sensitization to Ni, which is the standard coating for NdFeB magnets. Extended handling can result in an allergic reaction. We recommend wear safety gloves.

Bodily injuries

Protect your hands. Two powerful magnets will join instantly with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Do not give to children

These products are not intended for children. Swallowing a few magnets can lead to them attracting across intestines, which constitutes a direct threat to life and requires immediate surgery.

Life threat

For implant holders: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or request help to work with the magnets.

Caution required

Handle with care. Rare earth magnets attract from a long distance and connect with massive power, often faster than you can react.

Eye protection

Despite the nickel coating, the material is brittle and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.

Heat warning

Control the heat. Exposing the magnet to high heat will ruin its properties and pulling force.

Machining danger

Combustion risk: Rare earth powder is explosive. Do not process magnets without safety gear as this risks ignition.

Precision electronics

GPS units and mobile phones are extremely susceptible to magnetic fields. Close proximity with a strong magnet can decalibrate the sensors in your phone.

Electronic hazard

Intense magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Stay away of at least 10 cm.

Important! Looking for details? Read our article: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98