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MW 3x1 zestaw 100 szt. / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010548

GTIN/EAN: 5906301815396

Load capacity 0.21 kg / 2.10 N Magnetic Induction 342.82 mT / 3428 Gs
Diameter Ø
3 mm [±0,1 mm]
Height
1 mm [±0,1 mm]
Weight
5 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

technical specifications »

10.56 zł net / pcs

12.99 zł with VAT (23% VAT) / pcs

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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.

Guides from the knowledge base

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 3x1 zestaw 100 szt. / N38 - cylindrical magnet

Specification / characteristics - MW 3x1 zestaw 100 szt. / N38 - cylindrical magnet

properties
properties values
Cat. no. 010548
GTIN/EAN 5906301815396
Distributor Dhit sp. z o.o.
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 3 mm [±0,1 mm]
Height 1 mm [±0,1 mm]
Weight 5 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.21 kg / 2.10 N
Magnetic Induction ~ ? 342.82 mT / 3428 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 3x1 zestaw 100 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 modeling of the assembly - data

Presented data represent the direct effect of a mathematical calculation. Values are based on algorithms for the material Nd2Fe14B. Real-world conditions may differ. Use these calculations as a supplementary guide for designers.

Table 1: Static force (pull vs gap) - interaction chart
MW 3x1 zestaw 100 szt. / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3422 Gs
342.2 mT
 0.21 kg / 0.46 lbs
210.0 g / 2.1 N
 low risk
1 mm 1521 Gs
152.1 mT
 0.04 kg / 0.09 lbs
41.5 g / 0.4 N
 low risk
2 mm 585 Gs
58.5 mT
 0.01 kg / 0.01 lbs
6.1 g / 0.1 N
 low risk
3 mm 260 Gs
26.0 mT
 0.00 kg / 0.00 lbs
1.2 g / 0.0 N
 low risk
5 mm 76 Gs
7.6 mT
 0.00 kg / 0.00 lbs
0.1 g / 0.0 N
 low risk
10 mm 12 Gs
1.2 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
15 mm 4 Gs
0.4 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
20 mm 2 Gs
0.2 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
30 mm 0 Gs
0.0 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
50 mm 0 Gs
0.0 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
Pulling power weakens significantly per each millimeter of distance. Note that even the smallest gap (e.g., contamination, paint, dust) significantly diminishes the holding power. Magnetic products operate optimally during direct contact; air break drastically cuts the power. Notice how quickly the pull force plummet, when the product does not touch tightly to the steel surface. When designing the arrangement, eliminate redundant distances.

Table 2: Sliding capacity (vertical surface)
MW 3x1 zestaw 100 szt. / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Raw steel (µ ≈ 0.2) 0.04 kg / 0.09 lbs
42.0 g / 0.4 N
1 mm Raw steel (µ ≈ 0.2) 0.01 kg / 0.02 lbs
8.0 g / 0.1 N
2 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
2.0 g / 0.0 N
3 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
5 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
0.0 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
The following data presents the approximate weight limit needed to initiate the shifting of the magnet downwards along a upright steel wall (assuming standard friction coefficient). This parameter is relative to the gap size between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MW 3x1 zestaw 100 szt. / N38

Surface type Friction coefficient / % Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% of nominal force
0.06 kg / 0.14 lbs
63.0 g / 0.6 N
Painted steel (standard)
µ = 0.2 20% of nominal force
0.04 kg / 0.09 lbs
42.0 g / 0.4 N
Oily/slippery steel
µ = 0.1 10% of nominal force
0.02 kg / 0.05 lbs
21.0 g / 0.2 N
Magnet with anti-slip rubber
µ = 0.5 50% of nominal force
0.11 kg / 0.23 lbs
105.0 g / 1.0 N
When hanging a magnet on a upright wall (e.g., a fridge), it will only hold barely about 20%-30% of its maximum pull force. Gravitational force as well as a low friction coefficient influence the fact that magnets slide down faster than they pop off the substrate. Designing a vertical fastening? Consider that the sliding force is much weaker than the perpendicular breakaway force. On a slippery surface, the magnet will slip down under a much lighter cargo. Using a rubber coating can effectively improve the result.

Table 4: Material efficiency (saturation) - power losses
MW 3x1 zestaw 100 szt. / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.02 kg / 0.05 lbs
21.0 g / 0.2 N
1 mm
25%
 0.05 kg / 0.12 lbs
52.5 g / 0.5 N
2 mm
50%
 0.11 kg / 0.23 lbs
105.0 g / 1.0 N
3 mm
75%
 0.16 kg / 0.35 lbs
157.5 g / 1.5 N
5 mm
100%
 0.21 kg / 0.46 lbs
210.0 g / 2.1 N
10 mm
100%
 0.21 kg / 0.46 lbs
210.0 g / 2.1 N
11 mm
100%
 0.21 kg / 0.46 lbs
210.0 g / 2.1 N
12 mm
100%
 0.21 kg / 0.46 lbs
210.0 g / 2.1 N
A thin sheet is not enough to absorb the entire magnetic field, which squanders power of the holder. If you install a neodymium to a thin surface, the magnetism will penetrate right through and the attraction force will be weaker. To squeeze 100% of this neodymium's potential, you require a sufficiently solid element of metal. The saturation phenomenon means that on thin elements (e.g., car bodies), the product works worse. We advise picking the steel thickness from these parameters.

Table 5: Working in heat (stability) - power drop
MW 3x1 zestaw 100 szt. / N38

Magnet temperature (°C) Force change relative to 20°C Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.21 kg / 0.46 lbs
210.0 g / 2.1 N
 Estimate
40 °C -4.4% 0.20 kg / 0.44 lbs
200.9 g / 2.0 N
 Estimate
60 °C -8.6% 0.19 kg / 0.42 lbs
191.9 g / 1.9 N
 Estimate
80 °C -12.8% 0.18 kg / 0.40 lbs
183.2 g / 1.8 N
 Material limit
100 °C — — Out of range — no model
The table estimates the reversible force change relative to 20°C, assuming a Br coefficient of -0.11%/°C and force proportional to Br². This is a simplified model with unchanged contact and geometry, not a measurement. Above the material limit, neither force nor irreversible magnetization loss is predicted.
The temperature limit comes from this product’s material data. Permissible conditions also depend on geometry and the magnetic circuit. Without B-H curves for the specific grade and temperature, Pc alone does not determine irreversible demagnetization. Values within the material range do not guarantee the allowable temperature of the complete assembly.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 3x1 zestaw 100 szt. / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.51 kg / 1.12 lbs
4 928 Gs
0.08 kg / 0.17 lbs
77 g / 0.8 N
 N/A
1 mm 0.26 kg / 0.56 lbs
4 847 Gs
0.04 kg / 0.08 lbs
38 g / 0.4 N
 0.23 kg / 0.51 lbs
~0 Gs
2 mm 0.10 kg / 0.22 lbs
3 042 Gs
0.02 kg / 0.03 lbs
15 g / 0.1 N
 0.09 kg / 0.20 lbs
~0 Gs
3 mm 0.04 kg / 0.08 lbs
1 865 Gs
0.01 kg / 0.01 lbs
6 g / 0.1 N
 0.03 kg / 0.08 lbs
~0 Gs
5 mm 0.01 kg / 0.01 lbs
764 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
10 mm 0.00 kg / 0.00 lbs
153 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
20 mm 0.00 kg / 0.00 lbs
23 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
2 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
1 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
1 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
0 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
0 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
0 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two strong neodymiums interact from a significantly greater distance than a magnet and steel setup. The connection of two magnets creates a more powerful interaction and a wider radius of operation. Want to build a solid fastener? Utilize two neodymiums instead of one magnet and a steel. Remember that when attracting two neodymiums, the impact force is massive. The repulsion force is slightly lower than the connection force, but still significant.
*Flux density for N-N configuration reaches ~0 Gs at the midpoint of the gap (due to field cancellation).
Important: Figures demonstrate sliding force of two identical magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Axial field levels — not safety zones
MW 3x1 zestaw 100 szt. / N38

Field level (Gs) mT Model distance (cm)
< 5 Gs < 0.5 mT 1.5 cm
< 10 Gs < 1.0 mT 1.5 cm
< 20 Gs < 2.0 mT 1.0 cm
< 40 Gs < 4.0 mT 1.0 cm
< 50 Gs < 5.0 mT 1.0 cm
< 400 Gs < 40.0 mT 0.5 cm
< 600 Gs < 60.0 mT 0.5 cm
Reference field levels for a model of one magnet, on its axis in air, with a 5 mm distance step. These are not device immunity limits or safe distances for implants. Do not use this table to assess the safety of a pacemaker, defibrillator or other implant; follow the device manufacturer’s and your clinician’s guidance. Steel and other magnets change the field distribution.

Table 8: Dynamics (cracking risk) - warning
MW 3x1 zestaw 100 szt. / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 2.62 km/h
(0.73 m/s)
 0.00 J
30 mm 2.62 km/h
(0.73 m/s)
 0.00 J
50 mm 2.62 km/h
(0.73 m/s)
 0.00 J
100 mm 2.62 km/h
(0.73 m/s)
 0.00 J
Magnetic elements are prone to chipping – a collision with steel risks their cracking. Control the attraction moment – a magnet released freely speeds with massive force. Impact energy can cause material chips or dangerous crushing to skin. Be sure to control the product during installation so it doesn't hit with great force against the metal. A collision at high speed almost guarantees destruction of the neodymium. Wear safety glasses when handling with large magnets.

Table 9: Corrosion resistance
MW 3x1 zestaw 100 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)
Neodymium magnets are highly susceptible to corrosion without proper protection. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (Pc)
MW 3x1 zestaw 100 szt. / N38

Parameter Value SI Unit / Description
Magnetic Flux 257 Mx 2.6 µWb
Pc Coefficient 0.44 Low (Flat)
Flux value emitted by the magnet pole. Essential parameter for generator designers and motors. The Pc coefficient determines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 3x1 zestaw 100 szt. / N38

Environment Effective steel pull Effect
Air (land) 0.21 kg Standard
Water (riverbed) 0.24 kg
(+0.03 kg buoyancy gain)
+14.5%
Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Sliding resistance

*Warning: On a vertical wall, the magnet holds just a fraction of its nominal pull.

2. Steel saturation

*Thin steel (e.g. 0.5mm PC case) severely 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) = 0.44

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

Elemental analysis

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: 010548-2026
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The presented product is an extremely powerful cylindrical magnet, made from advanced NdFeB material, which, with dimensions of Ø3x1 mm, guarantees optimal power. This specific item features 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 impressive force (approx. 0.21 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It finds application in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 2.10 N with a weight of only 5 g, this rod is indispensable in miniature devices 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., 3.1 mm) using two-component epoxy glues. To ensure long-term durability in automation, anaerobic resins 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.
This model is characterized by dimensions Ø3x1 mm, which, at a weight of 5 g, makes it an element with high magnetic energy density. The key parameter here is the holding force amounting to approximately 0.21 kg (force ~2.10 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.
This cylinder is magnetized axially (along the height of 1 mm), which means that the N and S poles are located on the flat, circular surfaces. 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 diametrically if your project requires it.

Strengths as well as weaknesses of rare earth magnets.

Advantages

Besides their exceptional magnetic power, neodymium magnets offer the following advantages:
  • They virtually do not lose power, because even after 10 years the performance loss is only ~1% (in laboratory conditions),
  • They possess excellent resistance to magnetic field loss as a result of external magnetic sources,
  • The use of an metallic layer of noble metals (nickel, gold, silver) causes the element to look better,
  • Magnets are distinguished by huge magnetic induction on the surface,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to versatility in forming and the ability to adapt to unusual requirements,
  • Huge importance in innovative solutions – they are commonly used in computer drives, electric motors, diagnostic systems, as well as technologically advanced constructions.
  • Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Disadvantages

Cons of neodymium magnets: application proposals
  • Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
  • Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
  • We recommend cover - magnetic mount, due to difficulties in realizing nuts inside the magnet and complex forms.
  • Possible danger resulting from small fragments of magnets pose a threat, in case of ingestion, which gains importance in the context of child safety. It is also worth noting that small components of these magnets can disrupt the diagnostic process medical in case of swallowing.
  • Due to complex production process, their price is relatively high,

Holding force characteristics

Highest magnetic holding force – what affects it?

Breakaway force was defined for ideal contact conditions, including:
  • with the use of a sheet made of low-carbon steel, ensuring maximum field concentration
  • with a cross-section no less than 10 mm
  • with a plane perfectly flat
  • with zero gap (no paint)
  • during detachment in a direction perpendicular to the mounting surface
  • in temp. approx. 20°C

Determinants of lifting force in real conditions

Real force is influenced by working environment parameters, mainly (from most important):
  • Space between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
  • Plate thickness – too thin plate causes magnetic saturation, causing part of the flux to be lost to the other side.
  • Material type – ideal substrate is pure iron steel. Cast iron may have worse magnetic properties.
  • Smoothness – full contact is possible only on smooth steel. Rough texture create air cushions, weakening the magnet.
  • Thermal environment – heating the magnet results in weakening of force. It is worth remembering the thermal limit for a given model.

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces the load capacity is reduced by as much as 5 times. Moreover, even a minimal clearance between the magnet and the plate decreases the lifting capacity.

Precautions when working with NdFeB magnets
No play value

Absolutely keep magnets away from children. Ingestion danger is significant, and the consequences of magnets connecting inside the body are tragic.

Thermal limits

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.

Handling guide

Be careful. Neodymium magnets act from a distance and snap with massive power, often quicker than you can move away.

Threat to navigation

A strong magnetic field interferes with the operation of compasses in phones and GPS navigation. Do not bring magnets near a smartphone to prevent damaging the sensors.

Hand protection

Danger of trauma: The attraction force is so immense that it can cause blood blisters, pinching, and broken bones. Protective gloves are recommended.

Metal Allergy

A percentage of the population suffer from a hypersensitivity to Ni, which is the common plating for NdFeB magnets. Prolonged contact may cause an allergic reaction. We recommend wear protective gloves.

Magnetic media

Device Safety: Neodymium magnets can ruin payment cards and sensitive devices (pacemakers, medical aids, mechanical watches).

Danger to pacemakers

Patients with a heart stimulator should keep an safe separation from magnets. The magnetism can stop the operation of the life-saving device.

Risk of cracking

Neodymium magnets are ceramic materials, meaning they are prone to chipping. Collision of two magnets leads to them cracking into small pieces.

Dust is flammable

Fire warning: Neodymium dust is explosive. Avoid machining magnets in home conditions as this risks ignition.

Danger! Details about risks in the article: Safety of working with magnets.