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MW 5x5 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010503

GTIN/EAN: 5906301814979

5.00

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

0.394 with VAT / pcs + price for transport

0.320 ZŁ net + 23% VAT / pcs

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Technical - 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
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

Technical analysis of the product - technical parameters

The following information constitute the result of a mathematical calculation. Results are based on models for the material Nd2Fe14B. Real-world parameters may differ from theoretical values. Please consider these data as a preliminary roadmap for designers.

Table 1: Static pull force (force vs distance) - interaction chart
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 LBS
790.0 g / 7.7 N
weak grip
1 mm 3420 Gs
342.0 mT
0.30 kg / 0.67 LBS
303.0 g / 3.0 N
weak grip
2 mm 1966 Gs
196.6 mT
0.10 kg / 0.22 LBS
100.1 g / 1.0 N
weak grip
3 mm 1155 Gs
115.5 mT
0.03 kg / 0.08 LBS
34.5 g / 0.3 N
weak grip
5 mm 469 Gs
46.9 mT
0.01 kg / 0.01 LBS
5.7 g / 0.1 N
weak grip
10 mm 101 Gs
10.1 mT
0.00 kg / 0.00 LBS
0.3 g / 0.0 N
weak grip
15 mm 36 Gs
3.6 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip
20 mm 17 Gs
1.7 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip
30 mm 6 Gs
0.6 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip
50 mm 1 Gs
0.1 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip

Table 2: Vertical force (vertical surface)
MW 5x5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.16 kg / 0.35 LBS
158.0 g / 1.5 N
1 mm Stal (~0.2) 0.06 kg / 0.13 LBS
60.0 g / 0.6 N
2 mm Stal (~0.2) 0.02 kg / 0.04 LBS
20.0 g / 0.2 N
3 mm Stal (~0.2) 0.01 kg / 0.01 LBS
6.0 g / 0.1 N
5 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 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: Vertical assembly (sliding) - vertical pull
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 LBS
237.0 g / 2.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.16 kg / 0.35 LBS
158.0 g / 1.5 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.08 kg / 0.17 LBS
79.0 g / 0.8 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.40 kg / 0.87 LBS
395.0 g / 3.9 N

Table 4: Steel thickness (saturation) - sheet metal selection
MW 5x5 / N38

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

Table 5: Working in heat (material behavior) - resistance threshold
MW 5x5 / N38

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

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 5x5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 3.69 kg / 8.14 LBS
5 990 Gs
0.55 kg / 1.22 LBS
554 g / 5.4 N
N/A
1 mm 2.37 kg / 5.23 LBS
8 857 Gs
0.36 kg / 0.79 LBS
356 g / 3.5 N
2.14 kg / 4.71 LBS
~0 Gs
2 mm 1.42 kg / 3.12 LBS
6 841 Gs
0.21 kg / 0.47 LBS
212 g / 2.1 N
1.27 kg / 2.81 LBS
~0 Gs
3 mm 0.82 kg / 1.80 LBS
5 194 Gs
0.12 kg / 0.27 LBS
122 g / 1.2 N
0.73 kg / 1.62 LBS
~0 Gs
5 mm 0.27 kg / 0.60 LBS
2 996 Gs
0.04 kg / 0.09 LBS
41 g / 0.4 N
0.24 kg / 0.54 LBS
~0 Gs
10 mm 0.03 kg / 0.06 LBS
939 Gs
0.00 kg / 0.01 LBS
4 g / 0.0 N
0.02 kg / 0.05 LBS
~0 Gs
20 mm 0.00 kg / 0.00 LBS
202 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
19 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
11 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
7 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
5 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
4 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
3 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) - 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
Mechanical watch 20 Gs (2.0 mT) 2.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 1.5 cm
Car key 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) - warning
MW 5x5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 32.96 km/h
(9.16 m/s)
0.03 J
30 mm 57.07 km/h
(15.85 m/s)
0.09 J
50 mm 73.68 km/h
(20.47 m/s)
0.15 J
100 mm 104.20 km/h
(28.95 m/s)
0.31 J

Table 9: Coating parameters (durability)
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: Construction 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: Physics of underwater searching
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%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Wall mount (shear)

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

2. Efficiency vs thickness

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

3. Thermal stability

*For N38 material, the critical 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 and environmental data
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: 010503-2026
Quick Unit Converter
Magnet pull force

Magnetic Field

Other proposals

The offered product is an incredibly powerful cylinder magnet, manufactured from advanced NdFeB material, which, with dimensions of Ø5x5 mm, guarantees the highest energy density. This specific item boasts high dimensional repeatability and industrial build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 0.79 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Additionally, 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 successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 7.76 N with a weight of only 0.74 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.
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 epoxy glues. To ensure stability in industry, specialized industrial adhesives 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 automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø5x5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 5 mm and height 5 mm. 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 power 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. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized through the diameter if your project requires it.

Advantages as well as disadvantages of neodymium magnets.

Pros

Besides their stability, neodymium magnets are valued for these benefits:
  • They retain full power for nearly 10 years – the loss is just ~1% (according to analyses),
  • They are resistant to demagnetization induced by external field influence,
  • In other words, due to the smooth finish of silver, the element gains visual value,
  • Magnetic induction on the working part of the magnet turns out to be maximum,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Due to the ability of accurate forming and customization to custom requirements, NdFeB magnets can be manufactured in a variety of shapes and sizes, which amplifies use scope,
  • Key role in modern technologies – they serve a role in hard drives, drive modules, medical equipment, also other advanced devices.
  • Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Disadvantages

Characteristics of disadvantages of neodymium magnets: application proposals
  • To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
  • Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • We suggest casing - magnetic holder, due to difficulties in producing nuts inside the magnet and complicated shapes.
  • Health risk related to microscopic parts of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child safety. Furthermore, small elements of these devices are able to be problematic in diagnostics medical when they are in the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Highest magnetic holding forcewhat it depends on?

The force parameter is a result of laboratory testing executed under standard conditions:
  • with the use of a sheet made of low-carbon steel, ensuring full magnetic saturation
  • whose transverse dimension reaches at least 10 mm
  • with a surface perfectly flat
  • without any insulating layer between the magnet and steel
  • for force applied at a right angle (pull-off, not shear)
  • at standard ambient temperature

What influences lifting capacity in practice

Effective lifting capacity is influenced by specific conditions, including (from priority):
  • Distance – existence of any layer (paint, tape, gap) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Steel type – mild steel gives the best results. Higher carbon content lower magnetic properties and holding force.
  • Smoothness – full contact is obtained only on polished steel. Any scratches and bumps create air cushions, reducing force.
  • Operating temperature – NdFeB sinters have a negative temperature coefficient. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, however under shearing force the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet and the plate reduces the holding force.

Safe handling of NdFeB magnets
Serious injuries

Large magnets can smash fingers instantly. Do not put your hand betwixt two strong magnets.

No play value

Neodymium magnets are not toys. Eating multiple magnets can lead to them connecting inside the digestive tract, which poses a direct threat to life and necessitates immediate surgery.

Combustion hazard

Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this may cause fire.

Allergic reactions

Some people experience a contact allergy to Ni, which is the standard coating for neodymium magnets. Prolonged contact might lead to a rash. We recommend use safety gloves.

Cards and drives

Very strong magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Maintain a gap of at least 10 cm.

Caution required

Handle magnets with awareness. Their huge power can surprise even professionals. Plan your moves and do not underestimate their force.

Threat to navigation

Navigation devices and mobile phones are highly susceptible to magnetism. Close proximity with a strong magnet can ruin the internal compass in your phone.

ICD Warning

Individuals with a heart stimulator must keep an absolute distance from magnets. The magnetism can disrupt the operation of the life-saving device.

Eye protection

Despite the nickel coating, neodymium is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into hazardous fragments.

Operating temperature

Avoid heat. Neodymium magnets are susceptible to heat. If you need resistance above 80°C, look for special high-temperature series (H, SH, UH).

Safety First! Need more info? Check our post: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98