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MW 5x3 zestaw 50 szt. / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010546

GTIN/EAN: 5906301815372

Load capacity 0.84 kg / 8.25 N Magnetic Induction 475.16 mT / 4752 Gs
Diameter Ø
5 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
22 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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Frequently asked questions

Where can I buy strong cylindrical neodymium magnets?
See the available cylinders in the DHIT catalogue. Compare dimensions, grade and the pull-force value on each product card; grade alone does not determine the pull force of a finished magnet.
Can a small cylindrical magnet provide a strong grip for precise workshop work?
Yes, but size alone is not enough to predict the result. Geometry, the steel surface and the direction of load affect the grip. Compare the specifications of the selected dimensions on their product cards.
Which cylindrical magnet can work at a higher temperature?
Check the operating-temperature limit of the particular model rather than assuming one limit for all N grades. The offered N52 models are rated up to 60°C. For hotter applications, ask for a product with a confirmed specification for the actual working temperature.

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 data - MW 5x3 zestaw 50 szt. / N38 - cylindrical magnet

Specification / characteristics - MW 5x3 zestaw 50 szt. / N38 - cylindrical magnet

properties
properties values
Cat. no. 010546
GTIN/EAN 5906301815372
Distributor Dhit sp. z o.o.
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 5 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 22 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.84 kg / 8.25 N
Magnetic Induction ~ ? 475.16 mT / 4752 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x3 zestaw 50 szt. / 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

Physical analysis of the assembly - report

The following information constitute the result of a mathematical analysis. Results rely on algorithms for the material Nd2Fe14B. Real-world parameters may differ from theoretical values. Treat these calculations as a preliminary roadmap when designing systems.

Table 1: Static pull force (force vs gap) - power drop
MW 5x3 zestaw 50 szt. / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4745 Gs
474.5 mT
0.84 kg / 1.85 LBS
840.0 g / 8.2 N
low risk
1 mm 2955 Gs
295.5 mT
0.33 kg / 0.72 LBS
325.8 g / 3.2 N
low risk
2 mm 1672 Gs
167.2 mT
0.10 kg / 0.23 LBS
104.4 g / 1.0 N
low risk
3 mm 960 Gs
96.0 mT
0.03 kg / 0.08 LBS
34.4 g / 0.3 N
low risk
5 mm 372 Gs
37.2 mT
0.01 kg / 0.01 LBS
5.2 g / 0.1 N
low risk
10 mm 74 Gs
7.4 mT
0.00 kg / 0.00 LBS
0.2 g / 0.0 N
low risk
15 mm 25 Gs
2.5 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
20 mm 12 Gs
1.2 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
30 mm 4 Gs
0.4 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
50 mm 1 Gs
0.1 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk

Table 2: Slippage load (wall)
MW 5x3 zestaw 50 szt. / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Raw steel (µ ≈ 0.2) 0.17 kg / 0.37 LBS
168.0 g / 1.6 N
1 mm Raw steel (µ ≈ 0.2) 0.07 kg / 0.15 LBS
66.0 g / 0.6 N
2 mm Raw steel (µ ≈ 0.2) 0.02 kg / 0.04 LBS
20.0 g / 0.2 N
3 mm Raw steel (µ ≈ 0.2) 0.01 kg / 0.01 LBS
6.0 g / 0.1 N
5 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
10 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
15 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
20 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
30 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
50 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N

Table 3: Wall mounting (shearing) - vertical pull
MW 5x3 zestaw 50 szt. / N38

Surface type Friction coefficient / % Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% of nominal force
0.25 kg / 0.56 LBS
252.0 g / 2.5 N
Painted steel (standard)
µ = 0.2 20% of nominal force
0.17 kg / 0.37 LBS
168.0 g / 1.6 N
Oily/slippery steel
µ = 0.1 10% of nominal force
0.08 kg / 0.19 LBS
84.0 g / 0.8 N
Magnet with anti-slip rubber
µ = 0.5 50% of nominal force
0.42 kg / 0.93 LBS
420.0 g / 4.1 N

Table 4: Material efficiency (saturation) - sheet metal selection
MW 5x3 zestaw 50 szt. / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.08 kg / 0.19 LBS
84.0 g / 0.8 N
1 mm
25%
0.21 kg / 0.46 LBS
210.0 g / 2.1 N
2 mm
50%
0.42 kg / 0.93 LBS
420.0 g / 4.1 N
3 mm
75%
0.63 kg / 1.39 LBS
630.0 g / 6.2 N
5 mm
100%
0.84 kg / 1.85 LBS
840.0 g / 8.2 N
10 mm
100%
0.84 kg / 1.85 LBS
840.0 g / 8.2 N
11 mm
100%
0.84 kg / 1.85 LBS
840.0 g / 8.2 N
12 mm
100%
0.84 kg / 1.85 LBS
840.0 g / 8.2 N

Table 5: Working in heat (material behavior) - thermal limit
MW 5x3 zestaw 50 szt. / N38

Magnet temperature (°C) Force change relative to 20°C Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.84 kg / 1.85 LBS
840.0 g / 8.2 N
Estimate
40 °C -4.4% 0.80 kg / 1.77 LBS
803.4 g / 7.9 N
Estimate
60 °C -8.6% 0.77 kg / 1.69 LBS
767.7 g / 7.5 N
Estimate
80 °C -12.8% 0.73 kg / 1.62 LBS
732.8 g / 7.2 N
Material limit
100 °C — — Out of range — no model

Table 6: Two magnets (attraction) - field collision
MW 5x3 zestaw 50 szt. / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 2.73 kg / 6.01 LBS
5 700 Gs
0.41 kg / 0.90 LBS
409 g / 4.0 N
N/A
1 mm 1.77 kg / 3.91 LBS
7 658 Gs
0.27 kg / 0.59 LBS
266 g / 2.6 N
1.60 kg / 3.52 LBS
~0 Gs
2 mm 1.06 kg / 2.33 LBS
5 910 Gs
0.16 kg / 0.35 LBS
159 g / 1.6 N
0.95 kg / 2.10 LBS
~0 Gs
3 mm 0.60 kg / 1.33 LBS
4 460 Gs
0.09 kg / 0.20 LBS
90 g / 0.9 N
0.54 kg / 1.19 LBS
~0 Gs
5 mm 0.19 kg / 0.42 LBS
2 520 Gs
0.03 kg / 0.06 LBS
29 g / 0.3 N
0.17 kg / 0.38 LBS
~0 Gs
10 mm 0.02 kg / 0.04 LBS
745 Gs
0.00 kg / 0.01 LBS
3 g / 0.0 N
0.02 kg / 0.03 LBS
~0 Gs
20 mm 0.00 kg / 0.00 LBS
147 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
12 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
7 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
5 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
3 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
2 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
2 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Axial field levels — not safety zones
MW 5x3 zestaw 50 szt. / N38

Field level (Gs) mT Model distance (cm)
< 5 Gs < 0.5 mT 3.0 cm
< 10 Gs < 1.0 mT 2.5 cm
< 20 Gs < 2.0 mT 2.0 cm
< 40 Gs < 4.0 mT 1.5 cm
< 50 Gs < 5.0 mT 1.5 cm
< 400 Gs < 40.0 mT 0.5 cm
< 600 Gs < 60.0 mT 0.5 cm

Table 8: Impact energy (kinetic energy) - collision effects
MW 5x3 zestaw 50 szt. / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 3.14 km/h
(0.87 m/s)
0.01 J
30 mm 3.14 km/h
(0.87 m/s)
0.01 J
50 mm 3.14 km/h
(0.87 m/s)
0.01 J
100 mm 3.14 km/h
(0.87 m/s)
0.01 J

Table 9: Anti-corrosion coating durability
MW 5x3 zestaw 50 szt. / 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 5x3 zestaw 50 szt. / N38

Parameter Value SI Unit / Description
Magnetic Flux 942 Mx 9.4 µWb
Pc Coefficient 0.66 High (Stable)

Table 11: Physics of underwater searching
MW 5x3 zestaw 50 szt. / N38

Environment Effective steel pull Effect
Air (land) 0.84 kg Standard
Water (riverbed) 0.96 kg
(+0.12 kg buoyancy gain)
+14.5%
Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

1. Vertical hold

*Note: On a vertical wall, the magnet holds just approx. 20-30% of its nominal pull.

2. Plate thickness effect

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

3. Thermal stability

N38: the maximum material working temperature is 80°C. Permitted conditions also depend on the shape and magnetic circuit.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.66

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 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: 010546-2026
Magnet Unit Converter

Force (pull)


Magnetic Induction

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The offered product is an extremely powerful cylindrical magnet, manufactured from advanced NdFeB material, which, with dimensions of Ø5x3 mm, guarantees maximum efficiency. This specific item boasts high dimensional repeatability and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 0.84 kg), this product is available off-the-shelf from our European logistics center, ensuring quick 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 successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 8.25 N with a weight of only 22 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.
Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 5.1 mm) using epoxy glues. To ensure stability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Choose the material grade together with the dimensions and working conditions. A grade designation alone does not determine the pull force of the finished magnet. Check the properties and working temperature of this specific model on its product card; contact us before ordering for an unusual application.
The presented product is a neodymium magnet with precisely defined parameters: diameter 5 mm and height 3 mm. The key parameter here is the lifting capacity amounting to approximately 0.84 kg (force ~8.25 N), which, with such compact 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.

Strengths as well as weaknesses of rare earth magnets.

Strengths

Apart from their superior magnetism, neodymium magnets have these key benefits:
  • They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (according to literature),
  • Magnets very well resist against loss of magnetization caused by ambient magnetic noise,
  • Thanks to the shiny finish, the surface of Ni-Cu-Ni, gold, or silver-plated gives an professional appearance,
  • Magnetic induction on the working part of the magnet is maximum,
  • Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling functioning at temperatures reaching 230°C and above...
  • Thanks to freedom in constructing and the capacity to adapt to specific needs,
  • Universal use in innovative solutions – they serve a role in computer drives, brushless drives, medical devices, as well as modern systems.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Limitations

Cons of neodymium magnets: application proposals
  • At strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
  • They rust in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in producing nuts and complex forms in magnets, we recommend using a housing - magnetic mount.
  • Possible danger related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the context of child safety. Additionally, tiny parts of these magnets can be problematic in diagnostics medical when they are in the body.
  • With mass production the cost of neodymium magnets can be a barrier,

Pull force analysis

Magnetic strength at its maximum – what affects it?

The force parameter is a measurement result executed under standard conditions:
  • with the use of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
  • with a cross-section of at least 10 mm
  • characterized by smoothness
  • under conditions of no distance (metal-to-metal)
  • during detachment in a direction vertical to the plane
  • at room temperature

Key elements affecting lifting force

Please note that the working load will differ influenced by the following factors, in order of importance:
  • Distance – the presence of foreign body (rust, tape, 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 shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
  • Material composition – not every steel attracts identically. Alloy additives worsen the attraction effect.
  • Base smoothness – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
  • Thermal environment – temperature increase results in weakening of induction. Check the maximum operating temperature for a given model.

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under a perpendicular pulling force, whereas under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

Warnings
Nickel allergy

Certain individuals suffer from a contact allergy to Ni, which is the typical protective layer for neodymium magnets. Extended handling can result in skin redness. We recommend use safety gloves.

Fragile material

Protect your eyes. Magnets can fracture upon violent connection, launching sharp fragments into the air. Wear goggles.

Serious injuries

Mind your fingers. Two powerful magnets will snap together immediately with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Cards and drives

Do not bring magnets close to a purse, laptop, or TV. The magnetic field can permanently damage these devices and wipe information from cards.

Compass and GPS

Navigation devices and smartphones are extremely sensitive to magnetism. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.

Health Danger

Patients with a heart stimulator should keep an absolute distance from magnets. The magnetism can disrupt the operation of the implant.

Do not underestimate power

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

Combustion hazard

Combustion risk: Neodymium dust is explosive. Do not process magnets in home conditions as this risks ignition.

Demagnetization risk

Do not exceed the maximum operating temperature stated in the specifications of the particular product. The limit depends on the material, geometry and operating arrangement; there is no single threshold for all neodymium magnets. Overheating can permanently weaken a magnet.

Adults only

Only for adults. Small elements can be swallowed, causing intestinal necrosis. Store out of reach of kids and pets.

Security! Learn more about hazards in the article: Safety of working with magnets.