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MW 5x5 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010503

GTIN/EAN: 5906301814979

5.00
Load capacity 0.79 kg / 7.76 N Magnetic Induction 553.14 mT / 5531 Gs
Diameter Ø
5 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
0.74 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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price from 1 pcs
0.320 zł
0.394 zł
price from 1900 pcs
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0.370 zł
price from 7900 pcs
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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.

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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 of the product - MW 5x5 / N38 - cylindrical magnet

Specification / characteristics - MW 5x5 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010503
GTIN/EAN 5906301814979
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 5 mm [±0,1 mm]
Height 5 mm [±0,1 mm]
Weight 0.74 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.79 kg / 7.76 N
Magnetic Induction ~ ? 553.14 mT / 5531 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x5 / 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

Technical simulation of the magnet - report

These values are the result of a physical analysis. Values are based on algorithms for the class Nd2Fe14B. Real-world conditions might slightly differ. Use these calculations as a preliminary roadmap during assembly planning.

Table 1: Static force (pull vs gap) - power drop
MW 5x5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5523 Gs
552.3 mT
0.79 kg / 1.74 pounds
790.0 g / 7.7 N
safe
1 mm 3420 Gs
342.0 mT
0.30 kg / 0.67 pounds
303.0 g / 3.0 N
safe
2 mm 1966 Gs
196.6 mT
0.10 kg / 0.22 pounds
100.1 g / 1.0 N
safe
3 mm 1155 Gs
115.5 mT
0.03 kg / 0.08 pounds
34.5 g / 0.3 N
safe
5 mm 469 Gs
46.9 mT
0.01 kg / 0.01 pounds
5.7 g / 0.1 N
safe
10 mm 101 Gs
10.1 mT
0.00 kg / 0.00 pounds
0.3 g / 0.0 N
safe
15 mm 36 Gs
3.6 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
20 mm 17 Gs
1.7 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
30 mm 6 Gs
0.6 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
50 mm 1 Gs
0.1 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe

Table 2: Sliding load (wall)
MW 5x5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.16 kg / 0.35 pounds
158.0 g / 1.5 N
1 mm Stal (~0.2) 0.06 kg / 0.13 pounds
60.0 g / 0.6 N
2 mm Stal (~0.2) 0.02 kg / 0.04 pounds
20.0 g / 0.2 N
3 mm Stal (~0.2) 0.01 kg / 0.01 pounds
6.0 g / 0.1 N
5 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 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) - behavior on slippery surfaces
MW 5x5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.24 kg / 0.52 pounds
237.0 g / 2.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.16 kg / 0.35 pounds
158.0 g / 1.5 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.08 kg / 0.17 pounds
79.0 g / 0.8 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.40 kg / 0.87 pounds
395.0 g / 3.9 N

Table 4: Steel thickness (saturation) - power losses
MW 5x5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.08 kg / 0.17 pounds
79.0 g / 0.8 N
1 mm
25%
0.20 kg / 0.44 pounds
197.5 g / 1.9 N
2 mm
50%
0.40 kg / 0.87 pounds
395.0 g / 3.9 N
3 mm
75%
0.59 kg / 1.31 pounds
592.5 g / 5.8 N
5 mm
100%
0.79 kg / 1.74 pounds
790.0 g / 7.7 N
10 mm
100%
0.79 kg / 1.74 pounds
790.0 g / 7.7 N
11 mm
100%
0.79 kg / 1.74 pounds
790.0 g / 7.7 N
12 mm
100%
0.79 kg / 1.74 pounds
790.0 g / 7.7 N

Table 5: Thermal resistance (stability) - power drop
MW 5x5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.79 kg / 1.74 pounds
790.0 g / 7.7 N
OK
40 °C -2.2% 0.77 kg / 1.70 pounds
772.6 g / 7.6 N
OK
60 °C -4.4% 0.76 kg / 1.67 pounds
755.2 g / 7.4 N
OK
80 °C -6.6% 0.74 kg / 1.63 pounds
737.9 g / 7.2 N
100 °C -28.8% 0.56 kg / 1.24 pounds
562.5 g / 5.5 N

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 5x5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 3.69 kg / 8.14 pounds
5 990 Gs
0.55 kg / 1.22 pounds
554 g / 5.4 N
N/A
1 mm 2.37 kg / 5.23 pounds
8 857 Gs
0.36 kg / 0.79 pounds
356 g / 3.5 N
2.14 kg / 4.71 pounds
~0 Gs
2 mm 1.42 kg / 3.12 pounds
6 841 Gs
0.21 kg / 0.47 pounds
212 g / 2.1 N
1.27 kg / 2.81 pounds
~0 Gs
3 mm 0.82 kg / 1.80 pounds
5 194 Gs
0.12 kg / 0.27 pounds
122 g / 1.2 N
0.73 kg / 1.62 pounds
~0 Gs
5 mm 0.27 kg / 0.60 pounds
2 996 Gs
0.04 kg / 0.09 pounds
41 g / 0.4 N
0.24 kg / 0.54 pounds
~0 Gs
10 mm 0.03 kg / 0.06 pounds
939 Gs
0.00 kg / 0.01 pounds
4 g / 0.0 N
0.02 kg / 0.05 pounds
~0 Gs
20 mm 0.00 kg / 0.00 pounds
202 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
19 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
11 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
7 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
5 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
4 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
3 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Hazards (implants) - precautionary measures
MW 5x5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 3.5 cm
Hearing aid 10 Gs (1.0 mT) 2.5 cm
Timepiece 20 Gs (2.0 mT) 2.0 cm
Mobile device 40 Gs (4.0 mT) 1.5 cm
Remote 50 Gs (5.0 mT) 1.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm

Table 8: Impact energy (cracking risk) - collision effects
MW 5x5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 16.64 km/h
(4.62 m/s)
0.01 J
30 mm 16.65 km/h
(4.62 m/s)
0.01 J
50 mm 16.65 km/h
(4.62 m/s)
0.01 J
100 mm 16.65 km/h
(4.62 m/s)
0.01 J

Table 9: Surface protection spec
MW 5x5 / 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 5x5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 120 Mx 11.2 µWb
Pc Coefficient 0.89 High (Stable)

Table 11: Submerged application
MW 5x5 / N38

Environment Effective steel pull Effect
Air (land) 0.79 kg Standard
Water (riverbed) 0.90 kg
(+0.11 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

1. Shear force

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

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) significantly reduces the holding force.

3. Thermal stability

*For N38 material, the safety limit is 80°C.

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

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

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.

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%

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: 010503-2026
Quick Unit Converter

Magnet pull force


Magnetic Field

Other products

This product is an extremely powerful cylindrical magnet, composed of modern NdFeB material, which, with dimensions of Ø5x5 mm, guarantees maximum efficiency. This specific item boasts high dimensional repeatability and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 0.79 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 7.76 N with a weight of only 0.74 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., 5.1 mm) using two-component epoxy glues. To ensure stability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Magnets NdFeB grade N38 are strong enough for 90% of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø5x5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
This model is characterized by dimensions Ø5x5 mm, which, at a weight of 0.74 g, makes it an element with impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 0.79 kg (force ~7.76 N), which, with such defined dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, 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 5 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.

Strengths as well as weaknesses of rare earth magnets.

Strengths

Besides their remarkable pulling force, neodymium magnets offer the following advantages:
  • They retain attractive force for almost 10 years – the drop is just ~1% (in theory),
  • They maintain their magnetic properties even under close interference source,
  • In other words, due to the aesthetic surface of nickel, the element is aesthetically pleasing,
  • They feature high magnetic induction at the operating surface, which increases their power,
  • 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 versatility in constructing and the capacity to adapt to specific needs,
  • Wide application in innovative solutions – they are used in hard drives, electric motors, precision medical tools, as well as technologically advanced constructions.
  • Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Limitations

Disadvantages of neodymium magnets:
  • They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • Limited ability of producing threads in the magnet and complicated shapes - preferred is cover - magnetic holder.
  • Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child safety. It is also worth noting that tiny parts of these magnets can disrupt the diagnostic process medical in case of swallowing.
  • With large orders the cost of neodymium magnets can be a barrier,

Lifting parameters

Maximum lifting force for a neodymium magnet – what it depends on?

Holding force of 0.79 kg is a result of laboratory testing executed under standard conditions:
  • using a plate made of low-carbon steel, functioning as a ideal flux conductor
  • whose thickness reaches at least 10 mm
  • with a plane cleaned and smooth
  • with total lack of distance (without impurities)
  • during pulling in a direction vertical to the plane
  • in stable room temperature

Practical aspects of lifting capacity – factors

It is worth knowing that the working load may be lower depending on the following factors, in order of importance:
  • Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) diminishes the pulling force, often by half at just 0.5 mm.
  • Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Steel grade – ideal substrate is pure iron steel. Cast iron may attract less.
  • Plate texture – smooth surfaces ensure maximum contact, which improves field saturation. Uneven metal weaken the grip.
  • Thermal environment – heating the magnet causes a temporary drop 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 shearing force the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the lifting capacity.

Safe handling of NdFeB magnets
Sensitization to coating

It is widely known that nickel (the usual finish) is a potent allergen. For allergy sufferers, prevent direct skin contact and choose encased magnets.

Demagnetization risk

Do not overheat. NdFeB magnets are susceptible to heat. If you need operation above 80°C, ask us about HT versions (H, SH, UH).

Fragile material

Beware of splinters. Magnets can fracture upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.

Crushing risk

Big blocks can smash fingers instantly. Under no circumstances place your hand betwixt two strong magnets.

Pacemakers

Health Alert: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Choking Hazard

Absolutely store magnets away from children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are very dangerous.

Safe distance

Data protection: Neodymium magnets can damage payment cards and sensitive devices (pacemakers, medical aids, timepieces).

Handling guide

Handle magnets with awareness. Their immense force can shock even experienced users. Be vigilant and do not underestimate their power.

Threat to navigation

GPS units and smartphones are highly susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Fire risk

Combustion risk: Neodymium dust is explosive. Avoid machining magnets without safety gear as this risks ignition.

Attention! Looking for details? Read our article: Are neodymium magnets dangerous?