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MW 10x8 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010013

GTIN/EAN: 5906301810124

5.00
Load capacity 3.38 kg / 33.16 N Magnetic Induction 525.10 mT / 5251 Gs
Diameter Ø
10 mm [±0,1 mm]
Height
8 mm [±0,1 mm]
Weight
4.71 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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Gross
price from 1 pcs
1.770 zł
2.18 zł
price from 350 pcs
1.664 zł
2.05 zł
price from 1450 pcs
1.558 zł
1.916 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.

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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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
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

Engineering simulation of the assembly - report

These values constitute the outcome of a mathematical simulation. Results rely on algorithms for the material Nd2Fe14B. Operational parameters may differ from theoretical values. Use these calculations as a preliminary roadmap 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 pounds
3380.0 g / 33.2 N
warning
1 mm 4204 Gs
420.4 mT
2.17 kg / 4.78 pounds
2169.6 g / 21.3 N
warning
2 mm 3243 Gs
324.3 mT
1.29 kg / 2.85 pounds
1291.0 g / 12.7 N
safe
3 mm 2454 Gs
245.4 mT
0.74 kg / 1.63 pounds
739.6 g / 7.3 N
safe
5 mm 1403 Gs
140.3 mT
0.24 kg / 0.53 pounds
241.5 g / 2.4 N
safe
10 mm 428 Gs
42.8 mT
0.02 kg / 0.05 pounds
22.5 g / 0.2 N
safe
15 mm 177 Gs
17.7 mT
0.00 kg / 0.01 pounds
3.8 g / 0.0 N
safe
20 mm 89 Gs
8.9 mT
0.00 kg / 0.00 pounds
1.0 g / 0.0 N
safe
30 mm 31 Gs
3.1 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
safe
50 mm 8 Gs
0.8 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe

Table 2: Shear force (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 pounds
676.0 g / 6.6 N
1 mm Stal (~0.2) 0.43 kg / 0.96 pounds
434.0 g / 4.3 N
2 mm Stal (~0.2) 0.26 kg / 0.57 pounds
258.0 g / 2.5 N
3 mm Stal (~0.2) 0.15 kg / 0.33 pounds
148.0 g / 1.5 N
5 mm Stal (~0.2) 0.05 kg / 0.11 pounds
48.0 g / 0.5 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: Wall mounting (shearing) - behavior on slippery surfaces
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 pounds
1014.0 g / 9.9 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.68 kg / 1.49 pounds
676.0 g / 6.6 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.34 kg / 0.75 pounds
338.0 g / 3.3 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.69 kg / 3.73 pounds
1690.0 g / 16.6 N

Table 4: Material efficiency (saturation) - power losses
MW 10x8 / N38

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

Table 5: Thermal stability (material behavior) - 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 pounds
3380.0 g / 33.2 N
OK
40 °C -2.2% 3.31 kg / 7.29 pounds
3305.6 g / 32.4 N
OK
60 °C -4.4% 3.23 kg / 7.12 pounds
3231.3 g / 31.7 N
OK
80 °C -6.6% 3.16 kg / 6.96 pounds
3156.9 g / 31.0 N
100 °C -28.8% 2.41 kg / 5.31 pounds
2406.6 g / 23.6 N

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 10x8 / N38

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

Table 7: Safety (HSE) (implants) - precautionary measures
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
Timepiece 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: Dynamics (cracking risk) - warning
MW 10x8 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 19.12 km/h
(5.31 m/s)
0.07 J
30 mm 19.21 km/h
(5.34 m/s)
0.07 J
50 mm 19.21 km/h
(5.34 m/s)
0.07 J
100 mm 19.21 km/h
(5.34 m/s)
0.07 J

Table 9: Corrosion resistance
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: Construction data (Flux)
MW 10x8 / N38

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

Table 11: Hydrostatics and buoyancy
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%
Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

1. Sliding resistance

*Note: On a vertical wall, the magnet retains just a fraction of its max power.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) drastically weakens the holding force.

3. Temperature resistance

*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) = 0.79

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.

Engineering data and GPSR

Material specification

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: 010013-2026
Quick Unit Converter

Magnet pull force


Magnetic Field

Other proposals

The offered product is an incredibly powerful cylindrical magnet, composed of durable NdFeB material, which, at dimensions of Ø10x8 mm, guarantees the highest energy density. This specific item is characterized by high dimensional repeatability and professional build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with significant force (approx. 3.38 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is created for building electric motors, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 33.16 N with a weight of only 4.71 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.
Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel 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 (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 value of 33.16 N means that the magnet is capable of holding a weight many times exceeding its own mass of 4.71 g. 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 10 mm. Such an arrangement is most desirable 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 as well as cons of rare earth magnets.

Benefits

Apart from their consistent magnetism, neodymium magnets have these key benefits:
  • They do not lose magnetism, even after around ten years – the drop in power is only ~1% (according to tests),
  • Magnets perfectly resist against loss of magnetization caused by ambient magnetic noise,
  • In other words, due to the aesthetic layer of silver, the element looks attractive,
  • Neodymium magnets create maximum magnetic induction on a their surface, which allows for strong attraction,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Thanks to freedom in constructing and the ability to modify to client solutions,
  • Wide application in innovative solutions – they are utilized in computer drives, drive modules, diagnostic systems, as well as other advanced devices.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Disadvantages of NdFeB magnets:
  • At strong impacts they can crack, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's 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.
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • Limited ability of producing nuts in the magnet and complicated forms - recommended is casing - magnetic holder.
  • Possible danger resulting from small fragments of magnets are risky, when accidentally swallowed, which becomes key in the context of child health protection. It is also worth noting that tiny parts of these devices can complicate diagnosis medical after entering the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Maximum lifting capacity of the magnetwhat contributes to it?

Breakaway force is the result of a measurement for ideal contact conditions, assuming:
  • on a block made of structural steel, effectively closing the magnetic field
  • possessing a thickness of minimum 10 mm to ensure full flux closure
  • characterized by even structure
  • with total lack of distance (no impurities)
  • for force acting at a right angle (pull-off, not shear)
  • at room temperature

Lifting capacity in real conditions – factors

In practice, the real power results from many variables, ranked from most significant:
  • Distance – existence of any layer (paint, dirt, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
  • Load vector – highest force is available only during perpendicular pulling. The shear force of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
  • Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
  • Metal type – not every steel reacts the same. Alloy additives weaken the attraction effect.
  • Surface finish – full contact is possible only on smooth steel. Rough texture create air cushions, weakening the magnet.
  • Temperature – heating the magnet causes a temporary drop of force. Check the maximum operating temperature for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate reduces the holding force.

H&S for magnets
Respect the power

Before starting, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.

Power loss in heat

Keep cool. NdFeB magnets are susceptible to temperature. If you require operation above 80°C, ask us about HT versions (H, SH, UH).

Avoid contact if allergic

Certain individuals suffer from a contact allergy to nickel, which is the common plating for NdFeB magnets. Frequent touching may cause a rash. We suggest wear protective gloves.

ICD Warning

Patients with a ICD should keep an safe separation from magnets. The magnetic field can stop the operation of the implant.

Impact on smartphones

Remember: rare earth magnets generate a field that interferes with precision electronics. Keep a separation from your mobile, device, and navigation systems.

Fire risk

Combustion risk: Neodymium dust is explosive. Do not process magnets in home conditions as this may cause fire.

Crushing risk

Danger of trauma: The attraction force is so immense that it can cause hematomas, pinching, and broken bones. Use thick gloves.

Protect data

Very strong magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Maintain a gap of at least 10 cm.

Keep away from children

Neodymium magnets are not suitable for play. Eating several magnets can lead to them attracting across intestines, which poses a direct threat to life and necessitates immediate surgery.

Beware of splinters

Watch out for shards. Magnets can explode upon violent connection, launching shards into the air. Wear goggles.

Safety First! More info about risks in the article: Safety of working with magnets.