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MW 15x3 zestaw 10 szt. / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010544

GTIN/EAN: 5906301815358

Load capacity 2.87 kg / 28.14 N Magnetic Induction 230.16 mT / 2302 Gs
Diameter Ø
15 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
39.8 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

18.69 zł net / pcs

22.99 zł with VAT (23% VAT) / pcs

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Gross
price from 1 pcs
18.69 zł
22.99 zł
price from 40 pcs
17.57 zł
21.61 zł
price from 140 pcs
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20.23 zł

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 details - MW 15x3 zestaw 10 szt. / N38 - cylindrical magnet

Specification / characteristics - MW 15x3 zestaw 10 szt. / N38 - cylindrical magnet

properties
properties values
Cat. no. 010544
GTIN/EAN 5906301815358
Distributor Dhit sp. z o.o.
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 15 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 39.8 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.87 kg / 28.14 N
Magnetic Induction ~ ? 230.16 mT / 2302 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 15x3 zestaw 10 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

Technical analysis of the assembly - technical parameters

The following data constitute the result of a mathematical analysis. Values rely on algorithms for the class Nd2Fe14B. Operational parameters might slightly differ. Treat these calculations as a supplementary guide for designers.

Table 1: Static force (force vs gap) - characteristics
MW 15x3 zestaw 10 szt. / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2301 Gs
230.1 mT
2.87 kg / 6.33 pounds
2870.0 g / 28.2 N
medium risk
1 mm 2098 Gs
209.8 mT
2.39 kg / 5.26 pounds
2386.5 g / 23.4 N
medium risk
2 mm 1842 Gs
184.2 mT
1.84 kg / 4.05 pounds
1838.5 g / 18.0 N
weak grip
3 mm 1570 Gs
157.0 mT
1.34 kg / 2.95 pounds
1337.0 g / 13.1 N
weak grip
5 mm 1084 Gs
108.4 mT
0.64 kg / 1.40 pounds
637.0 g / 6.2 N
weak grip
10 mm 410 Gs
41.0 mT
0.09 kg / 0.20 pounds
91.3 g / 0.9 N
weak grip
15 mm 178 Gs
17.8 mT
0.02 kg / 0.04 pounds
17.1 g / 0.2 N
weak grip
20 mm 89 Gs
8.9 mT
0.00 kg / 0.01 pounds
4.3 g / 0.0 N
weak grip
30 mm 31 Gs
3.1 mT
0.00 kg / 0.00 pounds
0.5 g / 0.0 N
weak grip
50 mm 7 Gs
0.7 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip

Table 2: Vertical hold (vertical surface)
MW 15x3 zestaw 10 szt. / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Raw steel (µ ≈ 0.2) 0.57 kg / 1.27 pounds
574.0 g / 5.6 N
1 mm Raw steel (µ ≈ 0.2) 0.48 kg / 1.05 pounds
478.0 g / 4.7 N
2 mm Raw steel (µ ≈ 0.2) 0.37 kg / 0.81 pounds
368.0 g / 3.6 N
3 mm Raw steel (µ ≈ 0.2) 0.27 kg / 0.59 pounds
268.0 g / 2.6 N
5 mm Raw steel (µ ≈ 0.2) 0.13 kg / 0.28 pounds
128.0 g / 1.3 N
10 mm Raw steel (µ ≈ 0.2) 0.02 kg / 0.04 pounds
18.0 g / 0.2 N
15 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.01 pounds
4.0 g / 0.0 N
20 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 15x3 zestaw 10 szt. / N38

Surface type Friction coefficient / % Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% of nominal force
0.86 kg / 1.90 pounds
861.0 g / 8.4 N
Painted steel (standard)
µ = 0.2 20% of nominal force
0.57 kg / 1.27 pounds
574.0 g / 5.6 N
Oily/slippery steel
µ = 0.1 10% of nominal force
0.29 kg / 0.63 pounds
287.0 g / 2.8 N
Magnet with anti-slip rubber
µ = 0.5 50% of nominal force
1.44 kg / 3.16 pounds
1435.0 g / 14.1 N

Table 4: Material efficiency (saturation) - power losses
MW 15x3 zestaw 10 szt. / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.29 kg / 0.63 pounds
287.0 g / 2.8 N
1 mm
25%
0.72 kg / 1.58 pounds
717.5 g / 7.0 N
2 mm
50%
1.44 kg / 3.16 pounds
1435.0 g / 14.1 N
3 mm
75%
2.15 kg / 4.75 pounds
2152.5 g / 21.1 N
5 mm
100%
2.87 kg / 6.33 pounds
2870.0 g / 28.2 N
10 mm
100%
2.87 kg / 6.33 pounds
2870.0 g / 28.2 N
11 mm
100%
2.87 kg / 6.33 pounds
2870.0 g / 28.2 N
12 mm
100%
2.87 kg / 6.33 pounds
2870.0 g / 28.2 N

Table 5: Working in heat (material behavior) - power drop
MW 15x3 zestaw 10 szt. / N38

Magnet temperature (°C) Force change relative to 20°C Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.87 kg / 6.33 pounds
2870.0 g / 28.2 N
Estimate
40 °C -4.4% 2.75 kg / 6.05 pounds
2745.1 g / 26.9 N
Estimate
60 °C -8.6% 2.62 kg / 5.78 pounds
2623.0 g / 25.7 N
Estimate
80 °C -12.8% 2.50 kg / 5.52 pounds
2503.7 g / 24.6 N
Material limit
100 °C — — Out of range — no model

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 15x3 zestaw 10 szt. / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 5.77 kg / 12.72 pounds
3 869 Gs
0.87 kg / 1.91 pounds
865 g / 8.5 N
N/A
1 mm 5.32 kg / 11.73 pounds
4 419 Gs
0.80 kg / 1.76 pounds
798 g / 7.8 N
4.79 kg / 10.55 pounds
~0 Gs
2 mm 4.80 kg / 10.57 pounds
4 196 Gs
0.72 kg / 1.59 pounds
719 g / 7.1 N
4.32 kg / 9.52 pounds
~0 Gs
3 mm 4.25 kg / 9.36 pounds
3 948 Gs
0.64 kg / 1.40 pounds
637 g / 6.2 N
3.82 kg / 8.42 pounds
~0 Gs
5 mm 3.17 kg / 6.99 pounds
3 412 Gs
0.48 kg / 1.05 pounds
476 g / 4.7 N
2.85 kg / 6.29 pounds
~0 Gs
10 mm 1.28 kg / 2.82 pounds
2 168 Gs
0.19 kg / 0.42 pounds
192 g / 1.9 N
1.15 kg / 2.54 pounds
~0 Gs
20 mm 0.18 kg / 0.40 pounds
821 Gs
0.03 kg / 0.06 pounds
28 g / 0.3 N
0.17 kg / 0.36 pounds
~0 Gs
50 mm 0.00 kg / 0.01 pounds
101 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
62 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
41 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
28 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
20 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
15 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Axial field levels — not safety zones
MW 15x3 zestaw 10 szt. / N38

Field level (Gs) mT Model distance (cm)
< 5 Gs < 0.5 mT 6.0 cm
< 10 Gs < 1.0 mT 5.0 cm
< 20 Gs < 2.0 mT 4.0 cm
< 40 Gs < 4.0 mT 3.0 cm
< 50 Gs < 5.0 mT 3.0 cm
< 400 Gs < 40.0 mT 1.5 cm
< 600 Gs < 60.0 mT 1.0 cm

Table 8: Impact energy (kinetic energy) - warning
MW 15x3 zestaw 10 szt. / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 7.84 km/h
(2.18 m/s)
0.09 J
30 mm 7.96 km/h
(2.21 m/s)
0.10 J
50 mm 7.96 km/h
(2.21 m/s)
0.10 J
100 mm 7.96 km/h
(2.21 m/s)
0.10 J

Table 9: Anti-corrosion coating durability
MW 15x3 zestaw 10 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: Construction data (Pc)
MW 15x3 zestaw 10 szt. / N38

Parameter Value SI Unit / Description
Magnetic Flux 4 718 Mx 47.2 µWb
Pc Coefficient 0.29 Low (Flat)

Table 11: Physics of underwater searching
MW 15x3 zestaw 10 szt. / N38

Environment Effective steel pull Effect
Air (land) 2.87 kg Standard
Water (riverbed) 3.29 kg
(+0.42 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. Shear force

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

2. Plate thickness effect

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

3. Heat tolerance

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) = 0.29

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

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%

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: 010544-2026
Quick Unit Converter

Magnet pull force


Magnetic Induction

Other deals

The presented product is an exceptionally strong rod magnet, composed of modern NdFeB material, which, with dimensions of Ø15x3 mm, guarantees maximum efficiency. The MW 15x3 zestaw 10 szt. / N38 component boasts an accuracy of ±0.1mm and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 2.87 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 28.14 N with a weight of only 39.8 g, this cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.
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., 15.1 mm) using two-component epoxy glues. To ensure stability in automation, specialized industrial adhesives are used, which do not react with the nickel coating 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 15 mm and height 3 mm. The value of 28.14 N means that the magnet is capable of holding a weight many times exceeding its own mass of 39.8 g. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 3 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is standard 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 neodymium magnets.

Pros

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (according to literature),
  • They feature excellent resistance to weakening of magnetic properties as a result of external fields,
  • Thanks to the reflective finish, the surface of nickel, gold-plated, or silver-plated gives an elegant appearance,
  • Magnets possess extremely high magnetic induction on the outer layer,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to versatility in shaping and the ability to adapt to complex applications,
  • Wide application in innovative solutions – they find application in magnetic memories, drive modules, medical equipment, also complex engineering applications.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Limitations

What to avoid - cons of neodymium magnets and ways of using them
  • At strong impacts they can crack, therefore we recommend 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.
  • Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Limited ability of making threads in the magnet and complicated shapes - preferred is casing - magnetic holder.
  • Possible danger to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the context of child health protection. Furthermore, small components of these magnets are able to disrupt the diagnostic process medical when they are in the body.
  • Due to neodymium price, their price is relatively high,

Holding force characteristics

Maximum holding power of the magnet – what affects it?

The lifting capacity listed is a measurement result performed under standard conditions:
  • using a sheet made of low-carbon steel, acting as a ideal flux conductor
  • with a thickness of at least 10 mm
  • characterized by smoothness
  • under conditions of no distance (surface-to-surface)
  • under axial application of breakaway force (90-degree angle)
  • at temperature room level

Determinants of lifting force in real conditions

Bear in mind that the working load will differ depending on elements below, starting with the most relevant:
  • Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Angle of force application – highest force is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
  • Base massiveness – insufficiently thick plate does not accept the full field, causing part of the power to be lost into the air.
  • Material type – the best choice is pure iron steel. Hardened steels may have worse magnetic properties.
  • Surface structure – the more even the plate, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
  • Temperature – heating the magnet causes a temporary drop of induction. Check the thermal limit for a given model.

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under shearing force the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet and the plate decreases the holding force.

Warnings
Threat to navigation

GPS units and smartphones are highly susceptible to magnetism. Close proximity with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Health Danger

For implant holders: Powerful magnets affect electronics. Maintain at least 30 cm distance or request help to work with the magnets.

Respect the power

Before starting, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.

Swallowing risk

Absolutely keep magnets away from children. Risk of swallowing is high, and the effects of magnets clamping inside the body are tragic.

Operating temperature

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.

Dust explosion hazard

Powder produced during machining of magnets is combustible. Do not drill into magnets unless you are an expert.

Material brittleness

Despite metallic appearance, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.

Electronic hazard

Data protection: Neodymium magnets can damage data carriers and delicate electronics (heart implants, hearing aids, mechanical watches).

Skin irritation risks

Studies show that nickel (standard magnet coating) is a strong allergen. For allergy sufferers, avoid touching magnets with bare hands and opt for encased magnets.

Bone fractures

Protect your hands. Two powerful magnets will join instantly with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

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