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MW 5x2 zestaw 100 szt. / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010531

GTIN/EAN: 5906301815228

Load capacity 0.70 kg / 6.86 N Magnetic Induction 386.50 mT / 3865 Gs
Diameter Ø
5 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
29 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

check technical specifications »

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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.

PDF report Calculator
Want to talk magnets?

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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Product card - MW 5x2 zestaw 100 szt. / N38 - cylindrical magnet

Specification / characteristics - MW 5x2 zestaw 100 szt. / N38 - cylindrical magnet

properties
properties values
Cat. no. 010531
GTIN/EAN 5906301815228
Distributor Dhit sp. z o.o.
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 5 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 29 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.70 kg / 6.86 N
Magnetic Induction ~ ? 386.50 mT / 3865 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x2 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

Physical simulation of the magnet - data

These values represent the result of a engineering analysis. Results were calculated on algorithms for the material Nd2Fe14B. Operational parameters may deviate from the simulation results. Use these calculations as a supplementary guide during assembly planning.

Table 1: Static pull force (pull vs distance) - interaction chart
MW 5x2 zestaw 100 szt. / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3860 Gs
386.0 mT
 0.70 kg / 1.54 lbs
700.0 g / 6.9 N
 low risk
1 mm 2460 Gs
246.0 mT
 0.28 kg / 0.63 lbs
284.4 g / 2.8 N
 low risk
2 mm 1384 Gs
138.4 mT
 0.09 kg / 0.20 lbs
90.0 g / 0.9 N
 low risk
3 mm 782 Gs
78.2 mT
 0.03 kg / 0.06 lbs
28.8 g / 0.3 N
 low risk
5 mm 293 Gs
29.3 mT
 0.00 kg / 0.01 lbs
4.0 g / 0.0 N
 low risk
10 mm 55 Gs
5.5 mT
 0.00 kg / 0.00 lbs
0.1 g / 0.0 N
 low risk
15 mm 18 Gs
1.8 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
20 mm 8 Gs
0.8 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
30 mm 3 Gs
0.3 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
Pulling power decreases sharply with every subsequent millimeter of distance. Note that every additional insulation layer (e.g., dirt, varnish, veneer) strongly diminishes the holding power. Magnetic products operate most effectively at the point of direct contact; air break kills the power. Notice how quickly the parameters fall, when the product does not touch tightly to the metal substrate. When planning the arrangement, avoid unnecessary gaps.

Table 2: Slippage hold (vertical surface)
MW 5x2 zestaw 100 szt. / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Raw steel (µ ≈ 0.2) 0.14 kg / 0.31 lbs
140.0 g / 1.4 N
1 mm Raw steel (µ ≈ 0.2) 0.06 kg / 0.12 lbs
56.0 g / 0.5 N
2 mm Raw steel (µ ≈ 0.2) 0.02 kg / 0.04 lbs
18.0 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
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
This section presents the approximate holding capacity necessary to cause the sliding of the magnet down on a upright metal surface (considering standard friction coefficient). This parameter depends on the gap size between the magnet and the surface.

Table 3: Wall mounting (shearing) - vertical pull
MW 5x2 zestaw 100 szt. / N38

Surface type Friction coefficient / % Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% of nominal force
0.21 kg / 0.46 lbs
210.0 g / 2.1 N
Painted steel (standard)
µ = 0.2 20% of nominal force
0.14 kg / 0.31 lbs
140.0 g / 1.4 N
Oily/slippery steel
µ = 0.1 10% of nominal force
0.07 kg / 0.15 lbs
70.0 g / 0.7 N
Magnet with anti-slip rubber
µ = 0.5 50% of nominal force
0.35 kg / 0.77 lbs
350.0 g / 3.4 N
When placing a magnet on a upright plane (e.g., a board), it will only hold barely about 20%-30% of nominal attraction strength. Gravitational force and a weak degree of grip mean that products move down faster than they pop off the substrate. Want to create a hanger? Note that the shear force is significantly lower than the maximum static pull force. On a smooth steel, the element will slide down under a much lighter cargo. Using a rubber layer can effectively improve the result.

Table 4: Steel thickness (saturation) - sheet metal selection
MW 5x2 zestaw 100 szt. / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.07 kg / 0.15 lbs
70.0 g / 0.7 N
1 mm
25%
 0.18 kg / 0.39 lbs
175.0 g / 1.7 N
2 mm
50%
 0.35 kg / 0.77 lbs
350.0 g / 3.4 N
3 mm
75%
 0.52 kg / 1.16 lbs
525.0 g / 5.2 N
5 mm
100%
 0.70 kg / 1.54 lbs
700.0 g / 6.9 N
10 mm
100%
 0.70 kg / 1.54 lbs
700.0 g / 6.9 N
11 mm
100%
 0.70 kg / 1.54 lbs
700.0 g / 6.9 N
12 mm
100%
 0.70 kg / 1.54 lbs
700.0 g / 6.9 N
A thin metal plate is incapable of take in the full magnetic flux, which weakens actual performance of the holder. If you attach a powerful product to a thin surface, the flux will penetrate right through and the holding will be smaller. To squeeze full efficiency of this magnet's power, you need a suitably thick backing of metal. The saturation phenomenon means that on delicate walls (e.g., thin profiles), the magnet holds weaker. We suggest choosing the steel thickness according to the table below.

Table 5: Working in heat (stability) - resistance threshold
MW 5x2 zestaw 100 szt. / N38

Magnet temperature (°C) Force change relative to 20°C Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.70 kg / 1.54 lbs
700.0 g / 6.9 N
 Estimate
40 °C -4.4% 0.67 kg / 1.48 lbs
669.5 g / 6.6 N
 Estimate
60 °C -8.6% 0.64 kg / 1.41 lbs
639.8 g / 6.3 N
 Estimate
80 °C -12.8% 0.61 kg / 1.35 lbs
610.6 g / 6.0 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: Two magnets (repulsion) - forces in the system
MW 5x2 zestaw 100 szt. / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 1.80 kg / 3.98 lbs
5 236 Gs
0.27 kg / 0.60 lbs
271 g / 2.7 N
 N/A
1 mm 1.21 kg / 2.68 lbs
6 336 Gs
0.18 kg / 0.40 lbs
182 g / 1.8 N
 1.09 kg / 2.41 lbs
~0 Gs
2 mm 0.73 kg / 1.62 lbs
4 921 Gs
0.11 kg / 0.24 lbs
110 g / 1.1 N
 0.66 kg / 1.45 lbs
~0 Gs
3 mm 0.42 kg / 0.92 lbs
3 711 Gs
0.06 kg / 0.14 lbs
62 g / 0.6 N
 0.37 kg / 0.83 lbs
~0 Gs
5 mm 0.13 kg / 0.29 lbs
2 071 Gs
0.02 kg / 0.04 lbs
19 g / 0.2 N
 0.12 kg / 0.26 lbs
~0 Gs
10 mm 0.01 kg / 0.02 lbs
587 Gs
0.00 kg / 0.00 lbs
2 g / 0.0 N
 0.01 kg / 0.02 lbs
~0 Gs
20 mm 0.00 kg / 0.00 lbs
110 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
9 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
5 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
3 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
2 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
1 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two magnets interact from a much further distance than a magnet and sheet setup. The setup of two magnets produces a massive flux and a larger range of operation. Planning to create a strong closure? Apply two magnets instead of one magnet and a striker plate. Remember that when bringing together two magnets, the impact force is massive. The repulsion force is a bit weaker than the connection force, but still large.
*The magnetic induction between like poles is approximately ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Attention: Figures demonstrate shear force of a pair of matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Axial field levels — not safety zones
MW 5x2 zestaw 100 szt. / N38

Field level (Gs) mT Model distance (cm)
< 5 Gs < 0.5 mT 2.5 cm
< 10 Gs < 1.0 mT 2.0 cm
< 20 Gs < 2.0 mT 1.5 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
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 (kinetic energy) - warning
MW 5x2 zestaw 100 szt. / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 2.53 km/h
(0.70 m/s)
 0.01 J
30 mm 2.54 km/h
(0.70 m/s)
 0.01 J
50 mm 2.54 km/h
(0.70 m/s)
 0.01 J
100 mm 2.54 km/h
(0.70 m/s)
 0.01 J
Neodymium magnets are delicate – a strong collision with metal causes immediate chipping. Watch the impact speed – a magnet released freely speeds with massive force. Kinetic force can cause material chips or painful pinches to fingers. Always hold the magnet during bringing near metal so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Use safety goggles when playing with powerful specimens.

Table 9: Corrosion resistance
MW 5x2 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)
The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (Flux)
MW 5x2 zestaw 100 szt. / N38

Parameter Value SI Unit / Description
Magnetic Flux 785 Mx 7.9 µWb
Pc Coefficient 0.50 Low (Flat)
Flux value passing through the magnet pole. Essential parameter when building generators and motors. The Pc coefficient determines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 5x2 zestaw 100 szt. / N38

Environment Effective steel pull Effect
Air (land) 0.70 kg Standard
Water (riverbed) 0.80 kg
(+0.10 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

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

2. Plate thickness effect

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

3. Power loss vs temp

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) = 0.50

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%

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: 010531-2026
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The presented product is an extremely powerful cylinder magnet, produced from durable NdFeB material, which, with dimensions of Ø5x2 mm, guarantees maximum efficiency. The MW 5x2 zestaw 100 szt. / N38 component boasts an accuracy of ±0.1mm and industrial build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with significant force (approx. 0.70 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating secures 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 6.86 N with a weight of only 29 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.
Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure long-term durability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability 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 Ø5x2 mm, which, at a weight of 29 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 0.70 kg (force ~6.86 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 2 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.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Benefits

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • They retain magnetic properties for around ten years – the drop is just ~1% (based on simulations),
  • Magnets very well resist against demagnetization caused by ambient magnetic noise,
  • The use of an refined coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • They feature high magnetic induction at the operating surface, making them more effective,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to freedom in forming and the ability to adapt to complex applications,
  • Wide application in future technologies – they serve a role in magnetic memories, electric drive systems, advanced medical instruments, also other advanced devices.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Disadvantages of NdFeB magnets:
  • To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
  • Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
  • They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of making nuts in the magnet and complex forms - recommended is casing - magnetic holder.
  • Possible danger to health – tiny shards of magnets pose a threat, in case of ingestion, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small elements of these products are able to be problematic in diagnostics medical after entering the body.
  • Due to expensive raw materials, their price is higher than average,

Pull force analysis

Highest magnetic holding force – what it depends on?

The declared magnet strength represents the maximum value, recorded under optimal environment, specifically:
  • using a sheet made of high-permeability steel, serving as a circuit closing element
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • with a surface cleaned and smooth
  • without the slightest clearance between the magnet and steel
  • during pulling in a direction perpendicular to the mounting surface
  • in stable room temperature

Key elements affecting lifting force

In real-world applications, the actual holding force results from several key aspects, listed from the most important:
  • Distance – existence of any layer (paint, dirt, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits much less (typically approx. 20-30% of nominal force).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Chemical composition of the base – low-carbon steel gives the best results. Higher carbon content reduce magnetic properties and holding force.
  • Surface structure – the smoother and more polished the plate, the better the adhesion and stronger the hold. Roughness creates an air distance.
  • Temperature influence – hot environment reduces pulling force. Too high temperature can permanently damage the magnet.

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under perpendicular forces, whereas under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Warnings
Fire warning

Machining of neodymium magnets poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Magnet fragility

Despite the nickel coating, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Swallowing risk

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

Sensitization to coating

Nickel alert: The nickel-copper-nickel coating consists of nickel. If skin irritation happens, immediately stop handling magnets and wear gloves.

Do not underestimate power

Handle with care. Neodymium magnets attract from a distance and connect with huge force, often faster than you can react.

Electronic hazard

Data protection: Neodymium magnets can ruin data carriers and delicate electronics (pacemakers, medical aids, mechanical watches).

Magnetic interference

Note: rare earth magnets generate a field that disrupts precision electronics. Keep a safe distance from your mobile, device, and navigation systems.

Medical implants

People with a pacemaker must keep an large gap from magnets. The magnetic field can disrupt the operation of the life-saving device.

Bone fractures

Big blocks can smash fingers instantly. Never put your hand betwixt two attracting surfaces.

Heat sensitivity

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.

Warning! Looking for details? Read our article: Why are neodymium magnets dangerous?