Product available Ships today (order by 14:00) CO2 GPSR PPWR REACH

MW 8x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010504

GTIN/EAN: 5906301814993

5.00
Load capacity 1.84 kg / 18.00 N Magnetic Induction 574.74 mT / 5747 Gs
Diameter Ø
8 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
3.77 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

1.220net / pcs

1.501 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?

Quantity
Net
Gross
price from 1 pcs
1.220 zł
1.501 zł
price from 500 pcs
1.147 zł
1.411 zł
price from 2050 pcs
1.074 zł
1.321 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.

Order by 14:00 and we’ll ship today!

Technical of the product - MW 8x10 / N38 - cylindrical magnet

Specification / characteristics - MW 8x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010504
GTIN/EAN 5906301814993
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 8 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 3.77 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.84 kg / 18.00 N
Magnetic Induction ~ ? 574.74 mT / 5747 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 8x10 / 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 modeling of the assembly - technical parameters

These values represent the result of a physical calculation. Results are based on models for the class Nd2Fe14B. Operational conditions may differ from theoretical values. Use these data as a reference point for designers.

Table 1: Static pull force (force vs gap) - interaction chart
MW 8x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5742 Gs
574.2 mT
1.84 kg / 4.06 lbs
1840.0 g / 18.1 N
weak grip
1 mm 4323 Gs
432.3 mT
1.04 kg / 2.30 lbs
1043.0 g / 10.2 N
weak grip
2 mm 3109 Gs
310.9 mT
0.54 kg / 1.19 lbs
539.5 g / 5.3 N
weak grip
3 mm 2206 Gs
220.6 mT
0.27 kg / 0.60 lbs
271.6 g / 2.7 N
weak grip
5 mm 1149 Gs
114.9 mT
0.07 kg / 0.16 lbs
73.7 g / 0.7 N
weak grip
10 mm 323 Gs
32.3 mT
0.01 kg / 0.01 lbs
5.8 g / 0.1 N
weak grip
15 mm 131 Gs
13.1 mT
0.00 kg / 0.00 lbs
1.0 g / 0.0 N
weak grip
20 mm 66 Gs
6.6 mT
0.00 kg / 0.00 lbs
0.2 g / 0.0 N
weak grip
30 mm 24 Gs
2.4 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
weak grip
50 mm 6 Gs
0.6 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
weak grip

Table 2: Shear capacity (wall)
MW 8x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.37 kg / 0.81 lbs
368.0 g / 3.6 N
1 mm Stal (~0.2) 0.21 kg / 0.46 lbs
208.0 g / 2.0 N
2 mm Stal (~0.2) 0.11 kg / 0.24 lbs
108.0 g / 1.1 N
3 mm Stal (~0.2) 0.05 kg / 0.12 lbs
54.0 g / 0.5 N
5 mm Stal (~0.2) 0.01 kg / 0.03 lbs
14.0 g / 0.1 N
10 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 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: Wall mounting (shearing) - behavior on slippery surfaces
MW 8x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.55 kg / 1.22 lbs
552.0 g / 5.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.37 kg / 0.81 lbs
368.0 g / 3.6 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.18 kg / 0.41 lbs
184.0 g / 1.8 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.92 kg / 2.03 lbs
920.0 g / 9.0 N

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 8x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.18 kg / 0.41 lbs
184.0 g / 1.8 N
1 mm
25%
0.46 kg / 1.01 lbs
460.0 g / 4.5 N
2 mm
50%
0.92 kg / 2.03 lbs
920.0 g / 9.0 N
3 mm
75%
1.38 kg / 3.04 lbs
1380.0 g / 13.5 N
5 mm
100%
1.84 kg / 4.06 lbs
1840.0 g / 18.1 N
10 mm
100%
1.84 kg / 4.06 lbs
1840.0 g / 18.1 N
11 mm
100%
1.84 kg / 4.06 lbs
1840.0 g / 18.1 N
12 mm
100%
1.84 kg / 4.06 lbs
1840.0 g / 18.1 N

Table 5: Thermal stability (stability) - thermal limit
MW 8x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.84 kg / 4.06 lbs
1840.0 g / 18.1 N
OK
40 °C -2.2% 1.80 kg / 3.97 lbs
1799.5 g / 17.7 N
OK
60 °C -4.4% 1.76 kg / 3.88 lbs
1759.0 g / 17.3 N
OK
80 °C -6.6% 1.72 kg / 3.79 lbs
1718.6 g / 16.9 N
100 °C -28.8% 1.31 kg / 2.89 lbs
1310.1 g / 12.9 N

Table 6: Two magnets (attraction) - field range
MW 8x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 10.22 kg / 22.52 lbs
6 064 Gs
1.53 kg / 3.38 lbs
1532 g / 15.0 N
N/A
1 mm 7.82 kg / 17.25 lbs
10 050 Gs
1.17 kg / 2.59 lbs
1174 g / 11.5 N
7.04 kg / 15.52 lbs
~0 Gs
2 mm 5.79 kg / 12.77 lbs
8 646 Gs
0.87 kg / 1.92 lbs
869 g / 8.5 N
5.21 kg / 11.49 lbs
~0 Gs
3 mm 4.19 kg / 9.25 lbs
7 358 Gs
0.63 kg / 1.39 lbs
629 g / 6.2 N
3.77 kg / 8.32 lbs
~0 Gs
5 mm 2.13 kg / 4.69 lbs
5 238 Gs
0.32 kg / 0.70 lbs
319 g / 3.1 N
1.91 kg / 4.22 lbs
~0 Gs
10 mm 0.41 kg / 0.90 lbs
2 299 Gs
0.06 kg / 0.14 lbs
61 g / 0.6 N
0.37 kg / 0.81 lbs
~0 Gs
20 mm 0.03 kg / 0.07 lbs
646 Gs
0.00 kg / 0.01 lbs
5 g / 0.0 N
0.03 kg / 0.06 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
76 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
47 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
31 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
22 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
16 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
12 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs

Table 7: Safety (HSE) (implants) - warnings
MW 8x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.5 cm
Hearing aid 10 Gs (1.0 mT) 4.5 cm
Timepiece 20 Gs (2.0 mT) 3.5 cm
Phone / Smartphone 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: Collisions (kinetic energy) - warning
MW 8x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 14.23 km/h
(3.95 m/s)
0.03 J
30 mm 14.27 km/h
(3.96 m/s)
0.03 J
50 mm 14.27 km/h
(3.96 m/s)
0.03 J
100 mm 14.27 km/h
(3.96 m/s)
0.03 J

Table 9: Anti-corrosion coating durability
MW 8x10 / 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 (Flux)
MW 8x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 040 Mx 30.4 µWb
Pc Coefficient 1.00 High (Stable)

Table 11: Physics of underwater searching
MW 8x10 / N38

Environment Effective steel pull Effect
Air (land) 1.84 kg Standard
Water (riverbed) 2.11 kg
(+0.27 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. Sliding resistance

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

2. Steel saturation

*Thin metal sheet (e.g. computer case) severely limits the holding force.

3. Heat tolerance

*For N38 material, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 1.00

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

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: 010504-2026
Measurement Calculator

Force (pull)


Magnetic Field

Other offers

The presented product is an incredibly powerful rod magnet, manufactured from modern NdFeB material, which, at dimensions of Ø8x10 mm, guarantees maximum efficiency. The MW 8x10 / N38 model boasts high dimensional repeatability and professional build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with significant force (approx. 1.84 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It finds application in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 18.00 N with a weight of only 3.77 g, this cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.
Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure stability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering a great economic balance and operational stability. If you need the strongest magnets in the same volume (Ø8x10), 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 Ø8x10 mm, which, at a weight of 3.77 g, makes it an element with high magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 1.84 kg (force ~18.00 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 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 8 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.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Strengths

In addition to their long-term stability, neodymium magnets provide the following advantages:
  • They have stable power, and over more than 10 years their attraction force decreases symbolically – ~1% (according to theory),
  • Magnets very well resist against demagnetization caused by ambient magnetic noise,
  • The use of an refined finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • They are known for high magnetic induction at the operating surface, which improves attraction properties,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
  • Thanks to flexibility in forming and the ability to adapt to unusual requirements,
  • Fundamental importance in modern industrial fields – they find application in data components, electric drive systems, medical devices, and industrial machines.
  • Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Limitations

Disadvantages of NdFeB magnets:
  • To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
  • Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • We suggest casing - magnetic holder, due to difficulties in realizing nuts inside the magnet and complex forms.
  • Potential hazard related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Furthermore, small elements of these products can be problematic in diagnostics medical after entering the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Highest magnetic holding forcewhat it depends on?

The lifting capacity listed is a result of laboratory testing executed under the following configuration:
  • using a plate made of low-carbon steel, serving as a ideal flux conductor
  • possessing a thickness of min. 10 mm to avoid saturation
  • with an ideally smooth touching surface
  • without the slightest insulating layer between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • at conditions approx. 20°C

Practical lifting capacity: influencing factors

Please note that the working load may be lower subject to the following factors, in order of importance:
  • Clearance – the presence of foreign body (rust, dirt, gap) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Material type – the best choice is high-permeability steel. Cast iron may attract less.
  • Base smoothness – the more even the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Temperature – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, in contrast under shearing force the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.

Warnings
Bodily injuries

Big blocks can break fingers in a fraction of a second. Do not place your hand betwixt two attracting surfaces.

Immense force

Before use, check safety instructions. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.

Heat sensitivity

Standard neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. Damage is permanent.

Cards and drives

Data protection: Neodymium magnets can damage data carriers and sensitive devices (pacemakers, medical aids, mechanical watches).

Danger to pacemakers

Warning for patients: Strong magnetic fields disrupt electronics. Keep minimum 30 cm distance or request help to handle the magnets.

Allergy Warning

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If redness appears, immediately stop working with magnets and wear gloves.

Fragile material

NdFeB magnets are sintered ceramics, meaning they are prone to chipping. Clashing of two magnets leads to them shattering into small pieces.

Adults only

NdFeB magnets are not toys. Accidental ingestion of multiple magnets can lead to them connecting inside the digestive tract, which poses a severe health hazard and requires urgent medical intervention.

Keep away from electronics

Remember: rare earth magnets produce a field that interferes with precision electronics. Maintain a separation from your phone, tablet, and navigation systems.

Dust is flammable

Drilling and cutting of NdFeB material poses a fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Caution! Looking for details? Read our article: Why are neodymium magnets dangerous?