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MW 8x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010504

GTIN/EAN: 5906301814993

5.00

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

1.501 with VAT / pcs + price for transport

1.220 ZŁ net + 23% VAT / pcs

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Detailed specification - 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
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 - technical parameters

Presented values are the result of a physical simulation. Values are based on models for the class Nd2Fe14B. Actual performance may differ from theoretical values. Use these data as a reference point when designing systems.

Table 1: Static force (force vs distance) - 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
low risk
1 mm 4323 Gs
432.3 mT
1.04 kg / 2.30 LBS
1043.0 g / 10.2 N
low risk
2 mm 3109 Gs
310.9 mT
0.54 kg / 1.19 LBS
539.5 g / 5.3 N
low risk
3 mm 2206 Gs
220.6 mT
0.27 kg / 0.60 LBS
271.6 g / 2.7 N
low risk
5 mm 1149 Gs
114.9 mT
0.07 kg / 0.16 LBS
73.7 g / 0.7 N
low risk
10 mm 323 Gs
32.3 mT
0.01 kg / 0.01 LBS
5.8 g / 0.1 N
low risk
15 mm 131 Gs
13.1 mT
0.00 kg / 0.00 LBS
1.0 g / 0.0 N
low risk
20 mm 66 Gs
6.6 mT
0.00 kg / 0.00 LBS
0.2 g / 0.0 N
low risk
30 mm 24 Gs
2.4 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
50 mm 6 Gs
0.6 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk

Table 2: Sliding force (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: Steel thickness (substrate influence) - power losses
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: Working in heat (material behavior) - power drop
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) Shear Strength (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) (electronics) - 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
Mechanical watch 20 Gs (2.0 mT) 3.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.5 cm
Car key 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 (cracking risk) - collision effects
MW 8x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 22.32 km/h
(6.20 m/s)
0.07 J
30 mm 38.59 km/h
(10.72 m/s)
0.22 J
50 mm 49.82 km/h
(13.84 m/s)
0.36 J
100 mm 70.46 km/h
(19.57 m/s)
0.72 J

Table 9: Corrosion resistance
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: Construction 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: Submerged application
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%
Corrosion 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

*Note: On a vertical wall, the magnet retains merely ~20% of its max power.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) significantly limits the holding force.

3. Heat tolerance

*For standard magnets, the safety limit 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.

Technical specification and ecology
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: 010504-2026
Quick Unit Converter
Pulling force

Magnetic Field

Other deals

This product is an incredibly powerful cylinder magnet, produced from advanced NdFeB material, which, at dimensions of Ø8x10 mm, guarantees maximum efficiency. The MW 8x10 / N38 model boasts high dimensional repeatability and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 1.84 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is ideal for building electric motors, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power 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.
Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 8.1 mm) using two-component epoxy glues. To ensure long-term durability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Magnets 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 (Ø8x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 8 mm and height 10 mm. The key parameter here is the lifting capacity amounting to approximately 1.84 kg (force ~18.00 N), which, with such defined dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 10 mm), which means that the N and S poles are located on the flat, circular surfaces. 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 and disadvantages of Nd2Fe14B magnets.

Strengths

Besides their exceptional magnetic power, neodymium magnets offer the following advantages:
  • They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (according to literature),
  • They show high resistance to demagnetization induced by external field influence,
  • A magnet with a smooth gold surface has an effective appearance,
  • Magnets are distinguished by huge magnetic induction on the active area,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • Thanks to the potential of flexible molding and customization to custom needs, magnetic components can be modeled in a variety of geometric configurations, which makes them more universal,
  • Versatile presence in advanced technology sectors – they find application in mass storage devices, electric drive systems, medical devices, also other advanced devices.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Cons

Characteristics of disadvantages of neodymium magnets and ways of using them
  • To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves 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 stability even at temperatures up to 230°C
  • They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in producing threads and complex forms in magnets, we recommend using a housing - magnetic holder.
  • Potential hazard related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small components of these products can be problematic in diagnostics medical in case of swallowing.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum lifting force for a neodymium magnet – what affects it?

The load parameter shown represents the peak performance, obtained under laboratory conditions, namely:
  • using a sheet made of mild steel, acting as a magnetic yoke
  • with a thickness no less than 10 mm
  • with an ideally smooth contact surface
  • under conditions of ideal adhesion (surface-to-surface)
  • during pulling in a direction vertical to the plane
  • at ambient temperature approx. 20 degrees Celsius

Impact of factors on magnetic holding capacity in practice

In real-world applications, the actual holding force depends on several key aspects, presented from crucial:
  • Clearance – existence of foreign body (paint, dirt, gap) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
  • Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of maximum force).
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
  • Steel type – low-carbon steel attracts best. Higher carbon content reduce magnetic properties and lifting capacity.
  • Surface finish – ideal contact is obtained only on smooth steel. Rough texture create air cushions, weakening the magnet.
  • Temperature – temperature increase results in weakening of force. Check the maximum operating temperature for a given model.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

Warnings
Warning for heart patients

Warning for patients: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Adults only

Neodymium magnets are not toys. Eating several magnets can lead to them pinching intestinal walls, which constitutes a severe health hazard and necessitates urgent medical intervention.

Handling rules

Handle magnets with awareness. Their powerful strength can surprise even experienced users. Be vigilant and do not underestimate their power.

Threat to navigation

Be aware: neodymium magnets produce a field that confuses sensitive sensors. Maintain a safe distance from your mobile, device, and navigation systems.

Data carriers

Equipment safety: Neodymium magnets can ruin data carriers and delicate electronics (heart implants, hearing aids, timepieces).

Magnet fragility

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

Warning for allergy sufferers

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction appears, cease working with magnets and wear gloves.

Machining danger

Powder created during grinding of magnets is self-igniting. Avoid drilling into magnets without proper cooling and knowledge.

Thermal limits

Standard neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. Damage is permanent.

Bone fractures

Pinching hazard: The attraction force is so great that it can result in blood blisters, pinching, and even bone fractures. Use thick gloves.

Important! Learn more about risks in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98