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MW 10x4 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010010

GTIN/EAN: 5906301810094

5.00

Diameter Ø

10 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

2.36 g

Magnetization Direction

↑ axial

Load capacity

2.80 kg / 27.42 N

Magnetic Induction

386.91 mT / 3869 Gs

Coating

[NiCuNi] Nickel

1.021 with VAT / pcs + price for transport

0.830 ZŁ net + 23% VAT / pcs

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Technical details - MW 10x4 / N38 - cylindrical magnet

Specification / characteristics - MW 10x4 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010010
GTIN/EAN 5906301810094
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 4 mm [±0,1 mm]
Weight 2.36 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.80 kg / 27.42 N
Magnetic Induction ~ ? 386.91 mT / 3869 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x4 / 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 magnet - report

Presented data constitute the direct effect of a physical simulation. Values are based on models for the material Nd2Fe14B. Real-world conditions may deviate from the simulation results. Treat these calculations as a supplementary guide during assembly planning.

Table 1: Static pull force (force vs gap) - power drop
MW 10x4 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3867 Gs
386.7 mT
2.80 kg / 6.17 pounds
2800.0 g / 27.5 N
strong
1 mm 3168 Gs
316.8 mT
1.88 kg / 4.14 pounds
1879.8 g / 18.4 N
weak grip
2 mm 2460 Gs
246.0 mT
1.13 kg / 2.50 pounds
1133.7 g / 11.1 N
weak grip
3 mm 1855 Gs
185.5 mT
0.64 kg / 1.42 pounds
644.6 g / 6.3 N
weak grip
5 mm 1036 Gs
103.6 mT
0.20 kg / 0.44 pounds
200.9 g / 2.0 N
weak grip
10 mm 293 Gs
29.3 mT
0.02 kg / 0.04 pounds
16.1 g / 0.2 N
weak grip
15 mm 114 Gs
11.4 mT
0.00 kg / 0.01 pounds
2.4 g / 0.0 N
weak grip
20 mm 55 Gs
5.5 mT
0.00 kg / 0.00 pounds
0.6 g / 0.0 N
weak grip
30 mm 18 Gs
1.8 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
weak grip
50 mm 4 Gs
0.4 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip

Table 2: Sliding load (vertical surface)
MW 10x4 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.56 kg / 1.23 pounds
560.0 g / 5.5 N
1 mm Stal (~0.2) 0.38 kg / 0.83 pounds
376.0 g / 3.7 N
2 mm Stal (~0.2) 0.23 kg / 0.50 pounds
226.0 g / 2.2 N
3 mm Stal (~0.2) 0.13 kg / 0.28 pounds
128.0 g / 1.3 N
5 mm Stal (~0.2) 0.04 kg / 0.09 pounds
40.0 g / 0.4 N
10 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N

Table 3: Vertical assembly (shearing) - vertical pull
MW 10x4 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.84 kg / 1.85 pounds
840.0 g / 8.2 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.56 kg / 1.23 pounds
560.0 g / 5.5 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.28 kg / 0.62 pounds
280.0 g / 2.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.40 kg / 3.09 pounds
1400.0 g / 13.7 N

Table 4: Material efficiency (saturation) - sheet metal selection
MW 10x4 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.28 kg / 0.62 pounds
280.0 g / 2.7 N
1 mm
25%
0.70 kg / 1.54 pounds
700.0 g / 6.9 N
2 mm
50%
1.40 kg / 3.09 pounds
1400.0 g / 13.7 N
3 mm
75%
2.10 kg / 4.63 pounds
2100.0 g / 20.6 N
5 mm
100%
2.80 kg / 6.17 pounds
2800.0 g / 27.5 N
10 mm
100%
2.80 kg / 6.17 pounds
2800.0 g / 27.5 N
11 mm
100%
2.80 kg / 6.17 pounds
2800.0 g / 27.5 N
12 mm
100%
2.80 kg / 6.17 pounds
2800.0 g / 27.5 N

Table 5: Working in heat (material behavior) - thermal limit
MW 10x4 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.80 kg / 6.17 pounds
2800.0 g / 27.5 N
OK
40 °C -2.2% 2.74 kg / 6.04 pounds
2738.4 g / 26.9 N
OK
60 °C -4.4% 2.68 kg / 5.90 pounds
2676.8 g / 26.3 N
80 °C -6.6% 2.62 kg / 5.77 pounds
2615.2 g / 25.7 N
100 °C -28.8% 1.99 kg / 4.40 pounds
1993.6 g / 19.6 N

Table 6: Two magnets (attraction) - field collision
MW 10x4 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 7.24 kg / 15.96 pounds
5 247 Gs
1.09 kg / 2.39 pounds
1086 g / 10.7 N
N/A
1 mm 6.04 kg / 13.31 pounds
7 061 Gs
0.91 kg / 2.00 pounds
905 g / 8.9 N
5.43 kg / 11.98 pounds
~0 Gs
2 mm 4.86 kg / 10.71 pounds
6 336 Gs
0.73 kg / 1.61 pounds
729 g / 7.2 N
4.37 kg / 9.64 pounds
~0 Gs
3 mm 3.81 kg / 8.41 pounds
5 612 Gs
0.57 kg / 1.26 pounds
572 g / 5.6 N
3.43 kg / 7.56 pounds
~0 Gs
5 mm 2.22 kg / 4.90 pounds
4 283 Gs
0.33 kg / 0.73 pounds
333 g / 3.3 N
2.00 kg / 4.41 pounds
~0 Gs
10 mm 0.52 kg / 1.15 pounds
2 071 Gs
0.08 kg / 0.17 pounds
78 g / 0.8 N
0.47 kg / 1.03 pounds
~0 Gs
20 mm 0.04 kg / 0.09 pounds
587 Gs
0.01 kg / 0.01 pounds
6 g / 0.1 N
0.04 kg / 0.08 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
61 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
37 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
24 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
16 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
12 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
9 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Protective zones (implants) - precautionary measures
MW 10x4 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.0 cm
Hearing aid 10 Gs (1.0 mT) 4.0 cm
Timepiece 20 Gs (2.0 mT) 3.0 cm
Mobile device 40 Gs (4.0 mT) 2.5 cm
Remote 50 Gs (5.0 mT) 2.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm

Table 8: Dynamics (cracking risk) - warning
MW 10x4 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 34.86 km/h
(9.68 m/s)
0.11 J
30 mm 60.17 km/h
(16.71 m/s)
0.33 J
50 mm 77.68 km/h
(21.58 m/s)
0.55 J
100 mm 109.85 km/h
(30.51 m/s)
1.10 J

Table 9: Coating parameters (durability)
MW 10x4 / 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: Construction data (Pc)
MW 10x4 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 142 Mx 31.4 µWb
Pc Coefficient 0.50 Low (Flat)

Table 11: Submerged application
MW 10x4 / N38

Environment Effective steel pull Effect
Air (land) 2.80 kg Standard
Water (riverbed) 3.21 kg
(+0.41 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. Shear force

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

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) drastically weakens the holding force.

3. Power loss vs temp

*For standard magnets, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.50

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
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%
Environmental data
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: 010010-2026
Magnet Unit Converter
Magnet pull force

Field Strength

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The presented product is an extremely powerful rod magnet, composed of advanced NdFeB material, which, at dimensions of Ø10x4 mm, guarantees optimal power. This specific item is characterized by an accuracy of ±0.1mm and professional build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 2.80 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
This model is perfect for building generators, advanced sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 27.42 N with a weight of only 2.36 g, this rod is indispensable in miniature devices and wherever every gram matters.
Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 10.1 mm) using epoxy glues. To ensure long-term durability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Magnets N38 are strong enough for the majority 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 (Ø10x4), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.
This model is characterized by dimensions Ø10x4 mm, which, at a weight of 2.36 g, makes it an element with high magnetic energy density. The value of 27.42 N means that the magnet is capable of holding a weight many times exceeding its own mass of 2.36 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 4 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 through the diameter if your project requires it.

Pros and cons of neodymium magnets.

Pros

Besides their remarkable pulling force, neodymium magnets offer the following advantages:
  • They retain attractive force for almost 10 years – the loss is just ~1% (according to analyses),
  • They have excellent resistance to weakening of magnetic properties due to opposing magnetic fields,
  • In other words, due to the smooth finish of silver, the element is aesthetically pleasing,
  • Magnets have extremely high magnetic induction on the outer layer,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to the option of accurate shaping and customization to specialized projects, NdFeB magnets can be modeled in a broad palette of shapes and sizes, which expands the range of possible applications,
  • Fundamental importance in modern technologies – they find application in computer drives, electromotive mechanisms, medical equipment, as well as multitasking production systems.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in realizing nuts and complicated forms in magnets, we recommend using casing - magnetic holder.
  • Potential hazard related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the context of child safety. 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 can be a barrier,

Pull force analysis

Highest magnetic holding forcewhat contributes to it?

The declared magnet strength refers to the maximum value, measured under ideal test conditions, specifically:
  • with the application of a yoke made of special test steel, guaranteeing maximum field concentration
  • possessing a thickness of at least 10 mm to ensure full flux closure
  • with an ground contact surface
  • under conditions of gap-free contact (surface-to-surface)
  • during pulling in a direction vertical to the mounting surface
  • at temperature approx. 20 degrees Celsius

Practical lifting capacity: influencing factors

Real force impacted by working environment parameters, including (from most important):
  • Distance – existence of any layer (rust, dirt, gap) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
  • Angle of force application – maximum parameter is available only during perpendicular pulling. The shear force of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
  • Steel thickness – too thin plate does not close the flux, causing part of the power to be escaped to the other side.
  • Chemical composition of the base – mild steel attracts best. Alloy steels decrease magnetic properties and holding force.
  • Surface condition – smooth surfaces ensure maximum contact, which increases field saturation. Uneven metal weaken the grip.
  • Temperature – heating the magnet results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.

Safe handling of neodymium magnets
Serious injuries

Big blocks can smash fingers in a fraction of a second. Do not put your hand between two attracting surfaces.

Precision electronics

A powerful magnetic field disrupts the operation of compasses in smartphones and GPS navigation. Do not bring magnets close to a device to avoid breaking the sensors.

Material brittleness

Beware of splinters. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. Wear goggles.

Data carriers

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

Do not underestimate power

Use magnets consciously. Their huge power can surprise even professionals. Plan your moves and respect their power.

Warning for allergy sufferers

It is widely known that the nickel plating (the usual finish) is a strong allergen. For allergy sufferers, refrain from touching magnets with bare hands and choose encased magnets.

Machining danger

Powder generated during grinding of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Heat warning

Regular neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. This process is irreversible.

Medical interference

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

Swallowing risk

Adult use only. Small elements pose a choking risk, causing severe trauma. Store away from kids and pets.

Safety First! Want to know more? Check our post: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98