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MW 12x4 / N52 - cylindrical magnet

cylindrical magnet

Catalog no 010500

GTIN/EAN: 5906301814962

5.00
Load capacity 4.68 kg / 45.89 N Magnetic Induction 400.45 mT / 4005 Gs
Diameter Ø
12 mm [±0,1 mm]
Height
4 mm [±0,1 mm]
Weight
3.39 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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1.770 zł net / pcs

2.18 zł with VAT (23% VAT) / pcs

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Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

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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Technical of the product - MW 12x4 / N52 - cylindrical magnet

Specification / characteristics - MW 12x4 / N52 - cylindrical magnet

properties
properties values
Cat. no. 010500
GTIN/EAN 5906301814962
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 12 mm [±0,1 mm]
Height 4 mm [±0,1 mm]
Weight 3.39 g
Magnetization Direction ↑ axial
Load capacity ~ ? 4.68 kg / 45.89 N
Magnetic Induction ~ ? 400.45 mT / 4005 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N52

Specification / characteristics MW 12x4 / N52 - cylindrical magnet
properties values units
remenance Br [min. - max.] ? 14.2-14.7 kGs
remenance Br [min. - max.] ? 1420-1470 mT
coercivity bHc ? 10.8-12.5 kOe
coercivity bHc ? 860-995 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 48-53 BH max MGOe
energy density [min. - max.] ? 380-422 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 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 simulation of the magnet - data

These values represent the direct effect of a physical analysis. Results are based on models for the material Nd2Fe14B. Operational conditions may differ from theoretical values. Use these data as a supplementary guide when designing systems.

Table 1: Static force (pull vs distance) - interaction chart
MW 12x4 / N52

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4003 Gs
400.3 mT
 4.68 kg / 10.32 pounds
4680.0 g / 45.9 N
 medium risk
1 mm 3438 Gs
343.8 mT
 3.45 kg / 7.61 pounds
3451.9 g / 33.9 N
 medium risk
2 mm 2824 Gs
282.4 mT
 2.33 kg / 5.14 pounds
2329.8 g / 22.9 N
 medium risk
3 mm 2255 Gs
225.5 mT
 1.48 kg / 3.27 pounds
1484.8 g / 14.6 N
 weak grip
5 mm 1386 Gs
138.6 mT
 0.56 kg / 1.24 pounds
561.3 g / 5.5 N
 weak grip
10 mm 445 Gs
44.5 mT
 0.06 kg / 0.13 pounds
58.0 g / 0.6 N
 weak grip
15 mm 181 Gs
18.1 mT
 0.01 kg / 0.02 pounds
9.6 g / 0.1 N
 weak grip
20 mm 89 Gs
8.9 mT
 0.00 kg / 0.01 pounds
2.3 g / 0.0 N
 weak grip
30 mm 30 Gs
3.0 mT
 0.00 kg / 0.00 pounds
0.3 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
Pulling power decreases sharply with every subsequent millimeter of distance. Note that even the smallest gap (e.g., contamination, paint, dust) noticeably reduces the pull force. Magnetic products work most effectively during direct contact; distance drastically cuts the force. Analyze how flashily the parameters drop, when the product does not touch flatly to the metal substrate. When designing the mounting, eliminate additional spacers.

Table 2: Sliding hold (vertical surface)
MW 12x4 / N52

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.94 kg / 2.06 pounds
936.0 g / 9.2 N
1 mm Stal (~0.2) 0.69 kg / 1.52 pounds
690.0 g / 6.8 N
2 mm Stal (~0.2) 0.47 kg / 1.03 pounds
466.0 g / 4.6 N
3 mm Stal (~0.2) 0.30 kg / 0.65 pounds
296.0 g / 2.9 N
5 mm Stal (~0.2) 0.11 kg / 0.25 pounds
112.0 g / 1.1 N
10 mm Stal (~0.2) 0.01 kg / 0.03 pounds
12.0 g / 0.1 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
The following data shows the estimated force required to initiate the slippage of the magnet downwards along a upright metal surface (assuming standard friction coefficient). The holding force varies with the gap size between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 12x4 / N52

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
1.40 kg / 3.10 pounds
1404.0 g / 13.8 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.94 kg / 2.06 pounds
936.0 g / 9.2 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.47 kg / 1.03 pounds
468.0 g / 4.6 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
2.34 kg / 5.16 pounds
2340.0 g / 23.0 N
When mounting a element on a upright wall (e.g., a car body), it you can count on only about 20%-30% of nominal attraction strength. Gravity as well as a weak degree of grip mean that holders slip faster than they detach. Designing a wall mount? Consider that the sliding force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the element will slip down under a much lighter load. Using a rubber pad can effectively raise the stability.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 12x4 / N52

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.47 kg / 1.03 pounds
468.0 g / 4.6 N
1 mm
25%
 1.17 kg / 2.58 pounds
1170.0 g / 11.5 N
2 mm
50%
 2.34 kg / 5.16 pounds
2340.0 g / 23.0 N
3 mm
75%
 3.51 kg / 7.74 pounds
3510.0 g / 34.4 N
5 mm
100%
 4.68 kg / 10.32 pounds
4680.0 g / 45.9 N
10 mm
100%
 4.68 kg / 10.32 pounds
4680.0 g / 45.9 N
11 mm
100%
 4.68 kg / 10.32 pounds
4680.0 g / 45.9 N
12 mm
100%
 4.68 kg / 10.32 pounds
4680.0 g / 45.9 N
A thin sheet is incapable of focus the full magnetic flux, which wastes potential of the holder. If you attach a powerful product to a weak sheet, the magnetism will penetrate right through and the holding will be smaller. To squeeze full efficiency of this magnet's potential, you need a suitably thick backing of metal. The saturation phenomenon means that on delicate walls (e.g., appliance housings), the magnet shows lower pull force. We suggest choosing the steel thickness according to the table below.

Table 5: Thermal resistance (material behavior) - thermal limit
MW 12x4 / N52

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 4.68 kg / 10.32 pounds
4680.0 g / 45.9 N
 OK
40 °C -2.2% 4.58 kg / 10.09 pounds
4577.0 g / 44.9 N
 OK
60 °C -4.4% 4.47 kg / 9.86 pounds
4474.1 g / 43.9 N
80 °C -6.6% 4.37 kg / 9.64 pounds
4371.1 g / 42.9 N
100 °C -28.8% 3.33 kg / 7.35 pounds
3332.2 g / 32.7 N
Classic neodymiums change their properties parameters past the thermal threshold. Avoid high temperatures – excessive heat can permanently damage this product. With every degree above norm, the magnet's force temporarily lowers. Avoid using this product in hot environments exceeding its operating temperature limit. Ignoring the limit will cause destruction of magnetism.
*Important note: Thermal stability is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low permeance coefficient) risk losing magnetic properties at lower temperatures than long magnets. The danger warning in the table signals permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - field range
MW 12x4 / N52

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 11.17 kg / 24.63 pounds
5 771 Gs
1.68 kg / 3.69 pounds
1676 g / 16.4 N
 N/A
1 mm 9.73 kg / 21.44 pounds
7 470 Gs
1.46 kg / 3.22 pounds
1459 g / 14.3 N
 8.75 kg / 19.30 pounds
~0 Gs
2 mm 8.24 kg / 18.16 pounds
6 875 Gs
1.24 kg / 2.72 pounds
1236 g / 12.1 N
 7.42 kg / 16.35 pounds
~0 Gs
3 mm 6.83 kg / 15.06 pounds
6 260 Gs
1.02 kg / 2.26 pounds
1024 g / 10.1 N
 6.15 kg / 13.55 pounds
~0 Gs
5 mm 4.46 kg / 9.84 pounds
5 060 Gs
0.67 kg / 1.48 pounds
670 g / 6.6 N
 4.02 kg / 8.86 pounds
~0 Gs
10 mm 1.34 kg / 2.95 pounds
2 772 Gs
0.20 kg / 0.44 pounds
201 g / 2.0 N
 1.21 kg / 2.66 pounds
~0 Gs
20 mm 0.14 kg / 0.30 pounds
891 Gs
0.02 kg / 0.05 pounds
21 g / 0.2 N
 0.12 kg / 0.27 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
99 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
61 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
40 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
27 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
Two strong neodymiums attract each other from a significantly greater distance than a magnet and sheet setup. Such a system of two magnets generates a stronger field and a further horizon of performance. Designing a strong closure? Utilize two neodymiums instead of one magnet and a steel. Exercise caution that when bringing together two magnets, the collision energy is huge. The levitation is a bit weaker than the attraction, but still significant.
*The magnetic induction for N-N configuration drops to ~0 Gs at the midpoint of the gap (due to field cancellation).
Note: Calculations demonstrate friction force of two identical neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (implants) - warnings
MW 12x4 / N52

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 6.0 cm
Hearing aid 10 Gs (1.0 mT) 4.5 cm
Timepiece 20 Gs (2.0 mT) 3.5 cm
Mobile device 40 Gs (4.0 mT) 3.0 cm
Remote 50 Gs (5.0 mT) 2.5 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
Powerful magnet radiation is a large risk to electronic devices as well as pacemakers. These neodymiums generate a flux that destroys function of sensitive medical devices. Notice: the invisible magnetic field penetrates the body and glass. Exceptional care must be exercised by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - warning
MW 12x4 / N52

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 29.76 km/h
(8.27 m/s)
 0.12 J
30 mm 29.96 km/h
(8.32 m/s)
 0.12 J
50 mm 29.97 km/h
(8.32 m/s)
 0.12 J
100 mm 29.97 km/h
(8.32 m/s)
 0.12 J
Neodymium magnets are very brittle – a violent impact against metal risks their cracking. Pay attention to connection velocity – a magnet released freely speeds with massive force. Striking energy can destroy the magnet or dangerous crushing to fingers. Be sure to control the product 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 neodymium. Wear eye protection when working with powerful specimens.

Table 9: Surface protection spec
MW 12x4 / N52

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 following table defines the conditions under which this product can be safely used. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MW 12x4 / N52

Parameter Value SI Unit / Description
Magnetic Flux 4 794 Mx 47.9 µWb
Pc Coefficient 0.44 Low (Flat)
Total magnetic flux passing through the pole surface. Key data in coil applications as well as sensors. Pc value determines the working geometry.

Table 11: Submerged application
MW 12x4 / N52

Environment Effective steel pull Effect
Air (land) 4.68 kg Standard
Water (riverbed) 5.36 kg
(+0.68 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.

1. Sliding resistance

*Caution: On a vertical wall, the magnet retains only ~20% of its max power.

2. Steel thickness impact

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

3. Thermal stability

*For standard magnets, the critical limit is 80°C.

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.

Engineering data and GPSR

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: 010500-2026
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The presented product is an incredibly powerful cylindrical magnet, composed of durable NdFeB material, which, at dimensions of Ø12x4 mm, guarantees the highest energy density. The MW 12x4 / N52 model 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. 4.68 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Furthermore, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 45.89 N with a weight of only 3.39 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.
Since our magnets have a tolerance of ±0.1mm, the best method is to glue them into holes with a slightly larger diameter (e.g., 12.1 mm) using two-component 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.
Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering a great economic balance and operational stability. If you need even stronger magnets in the same volume (Ø12x4), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.
This model is characterized by dimensions Ø12x4 mm, which, at a weight of 3.39 g, makes it an element with high magnetic energy density. The value of 45.89 N means that the magnet is capable of holding a weight many times exceeding its own mass of 3.39 g. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 4 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 through the diameter if your project requires it.

Strengths and weaknesses of neodymium magnets.

Benefits

Apart from their notable magnetic energy, neodymium magnets have these key benefits:
  • They do not lose strength, even after nearly ten years – the decrease in strength is only ~1% (according to tests),
  • They are resistant to demagnetization induced by external field influence,
  • Thanks to the shiny finish, the coating of Ni-Cu-Ni, gold-plated, or silver gives an visually attractive appearance,
  • Magnets possess excellent magnetic induction on the outer side,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
  • Considering the ability of flexible shaping and customization to custom projects, NdFeB magnets can be modeled in a variety of geometric configurations, which amplifies use scope,
  • Versatile presence in modern technologies – they are commonly used in computer drives, electromotive mechanisms, diagnostic systems, as well as multitasking production systems.
  • Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Disadvantages

Cons of neodymium magnets and proposals for their use:
  • At strong impacts they can crack, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Limited possibility of creating nuts in the magnet and complex forms - preferred is cover - mounting mechanism.
  • Possible danger resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child health protection. It is also worth noting that small components of these devices can disrupt the diagnostic process medical in case of swallowing.
  • Due to expensive raw materials, their price is higher than average,

Lifting parameters

Detachment force of the magnet in optimal conditions – what affects it?

The lifting capacity listed is a theoretical maximum value conducted under specific, ideal conditions:
  • on a plate made of mild steel, optimally conducting the magnetic field
  • possessing a thickness of at least 10 mm to avoid saturation
  • characterized by even structure
  • under conditions of gap-free contact (surface-to-surface)
  • under vertical force direction (90-degree angle)
  • at temperature room level

Determinants of practical lifting force of a magnet

In real-world applications, the real power is determined by several key aspects, ranked from the most important:
  • Distance – existence of any layer (paint, dirt, gap) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
  • Base massiveness – insufficiently thick sheet does not accept the full field, causing part of the power to be escaped to the other side.
  • Material type – the best choice is high-permeability steel. Cast iron may attract less.
  • Smoothness – full contact is possible only on polished steel. Any scratches and bumps create air cushions, reducing force.
  • Temperature – temperature increase causes a temporary drop of induction. Check the maximum operating temperature for a given model.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate reduces the holding force.

Precautions when working with NdFeB magnets
Avoid contact if allergic

Certain individuals suffer from a contact allergy to nickel, which is the common plating for NdFeB magnets. Extended handling can result in dermatitis. We suggest use protective gloves.

Do not give to children

Absolutely store magnets away from children. Ingestion danger is significant, and the consequences of magnets connecting inside the body are very dangerous.

Cards and drives

Avoid bringing magnets close to a purse, laptop, or TV. The magnetism can irreversibly ruin these devices and erase data from cards.

Respect the power

Before use, read the rules. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.

Crushing risk

Mind your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

Mechanical processing

Powder created during machining of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Maximum temperature

Watch the temperature. Heating the magnet above 80 degrees Celsius will ruin its properties and pulling force.

Precision electronics

A strong magnetic field negatively affects the operation of compasses in phones and navigation systems. Maintain magnets close to a device to avoid breaking the sensors.

Eye protection

NdFeB magnets are sintered ceramics, which means they are very brittle. Clashing of two magnets will cause them breaking into shards.

Implant safety

Life threat: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.

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