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MP 25x7.5/4.5x5 / N38 - ring magnet

ring magnet

Catalog no 030194

GTIN/EAN: 5906301812111

5.00
Load capacity 7.72 kg / 75.69 N Magnetic Induction 230.20 mT / 2302 Gs
Diameter
25 mm [±0,1 mm]
internal diameter Ø
7.5/4.5 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
17.81 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

see technical specifications »

6.50 zł net / pcs

8.00 zł with VAT (23% VAT) / pcs

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Frequently asked questions

What is the hole in a ring magnet for?
For mounting on a screw or a shaft. The bore may be cylindrical or countersunk for a screw head. The hole removes magnet volume, so a ring holds less than a disc of the same outside diameter.
What is the polarisation?
Axial as standard — poles on the flat faces of the ring. Diametrical polarisation is made to order.
What sizes are available?
Outside diameter from 5 to 62 mm from stock. To order up to 200 mm outside diameter, 180 mm bore and 40 mm height, with a lead time of 25–35 days.

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 - MP 25x7.5/4.5x5 / N38 - ring magnet

Specification / characteristics - MP 25x7.5/4.5x5 / N38 - ring magnet

properties
properties values
Cat. no. 030194
GTIN/EAN 5906301812111
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 25 mm [±0,1 mm]
internal diameter Ø 7.5/4.5 mm [±0,1 mm]
Height 5 mm [±0,1 mm]
Weight 17.81 g
Magnetization Direction ↑ axial
Load capacity ~ ? 7.72 kg / 75.69 N
Magnetic Induction ~ ? 230.20 mT / 2302 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 25x7.5/4.5x5 / N38 - ring 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

Engineering analysis of the product - technical parameters

The following values are the direct effect of a mathematical simulation. Values were calculated on models for the material Nd2Fe14B. Operational performance may differ from theoretical values. Use these data as a preliminary roadmap when designing systems.

Table 1: Static force (pull vs distance) - characteristics
MP 25x7.5/4.5x5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1995 Gs
199.5 mT
 7.72 kg / 17.02 lbs
7720.0 g / 75.7 N
 medium risk
1 mm 1906 Gs
190.6 mT
 7.05 kg / 15.54 lbs
7049.4 g / 69.2 N
 medium risk
2 mm 1793 Gs
179.3 mT
 6.24 kg / 13.75 lbs
6236.8 g / 61.2 N
 medium risk
3 mm 1664 Gs
166.4 mT
 5.37 kg / 11.84 lbs
5368.9 g / 52.7 N
 medium risk
5 mm 1385 Gs
138.5 mT
 3.72 kg / 8.21 lbs
3722.8 g / 36.5 N
 medium risk
10 mm 788 Gs
78.8 mT
 1.20 kg / 2.65 lbs
1203.8 g / 11.8 N
 low risk
15 mm 437 Gs
43.7 mT
 0.37 kg / 0.82 lbs
370.3 g / 3.6 N
 low risk
20 mm 253 Gs
25.3 mT
 0.12 kg / 0.27 lbs
124.5 g / 1.2 N
 low risk
30 mm 101 Gs
10.1 mT
 0.02 kg / 0.04 lbs
19.8 g / 0.2 N
 low risk
50 mm 27 Gs
2.7 mT
 0.00 kg / 0.00 lbs
1.4 g / 0.0 N
 low risk
Grip strength drops sharply with every subsequent millimeter of distance. Keep in mind that even the smallest gap (e.g., contamination, varnish, dust) noticeably weakens the grip. Magnets operate strongest during direct contact; air break drastically cuts the power. Notice how rapidly the pull force drop, when the magnet does not touch directly to the steel surface. When designing the assembly, discard unnecessary gaps.

Table 2: Sliding force (wall)
MP 25x7.5/4.5x5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.54 kg / 3.40 lbs
1544.0 g / 15.1 N
1 mm Stal (~0.2) 1.41 kg / 3.11 lbs
1410.0 g / 13.8 N
2 mm Stal (~0.2) 1.25 kg / 2.75 lbs
1248.0 g / 12.2 N
3 mm Stal (~0.2) 1.07 kg / 2.37 lbs
1074.0 g / 10.5 N
5 mm Stal (~0.2) 0.74 kg / 1.64 lbs
744.0 g / 7.3 N
10 mm Stal (~0.2) 0.24 kg / 0.53 lbs
240.0 g / 2.4 N
15 mm Stal (~0.2) 0.07 kg / 0.16 lbs
74.0 g / 0.7 N
20 mm Stal (~0.2) 0.02 kg / 0.05 lbs
24.0 g / 0.2 N
30 mm Stal (~0.2) 0.00 kg / 0.01 lbs
4.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
The table below presents the estimated weight limit necessary to start the sliding of the magnet down against a upright steel wall (considering standard friction coefficient). This parameter varies with the gap size between the magnet and the surface.

Table 3: Vertical assembly (shearing) - vertical pull
MP 25x7.5/4.5x5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
2.32 kg / 5.11 lbs
2316.0 g / 22.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.54 kg / 3.40 lbs
1544.0 g / 15.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.77 kg / 1.70 lbs
772.0 g / 7.6 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
3.86 kg / 8.51 lbs
3860.0 g / 37.9 N
When mounting a magnet on a upright surface (e.g., a car body), it will maintain barely about 20%-30% of nominal attraction strength. Gravitational force and a low friction coefficient cause that holders slide down faster than they pull off. Want to create a vertical fastening? Remember that the sliding force is much weaker than the maximum static pull force. On a painted metal, the magnet will slide down under a significantly smaller load. Using a rubber coating can effectively increase the grip.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MP 25x7.5/4.5x5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.77 kg / 1.70 lbs
772.0 g / 7.6 N
1 mm
25%
 1.93 kg / 4.25 lbs
1930.0 g / 18.9 N
2 mm
50%
 3.86 kg / 8.51 lbs
3860.0 g / 37.9 N
3 mm
75%
 5.79 kg / 12.76 lbs
5790.0 g / 56.8 N
5 mm
100%
 7.72 kg / 17.02 lbs
7720.0 g / 75.7 N
10 mm
100%
 7.72 kg / 17.02 lbs
7720.0 g / 75.7 N
11 mm
100%
 7.72 kg / 17.02 lbs
7720.0 g / 75.7 N
12 mm
100%
 7.72 kg / 17.02 lbs
7720.0 g / 75.7 N
A thin metal plate is incapable of focus the entire magnetic field, which weakens actual performance of the magnet. If you install a neodymium to a thin surface, the field will pass right through and the holding will be smaller. To achieve the maximum of this magnet's potential, you need a suitably thick piece of steel. The material oversaturation means that on thin elements (e.g., thin profiles), the holder works worse. We recommend selecting the steel thickness based on the following data.

Table 5: Working in heat (material behavior) - thermal limit
MP 25x7.5/4.5x5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 7.72 kg / 17.02 lbs
7720.0 g / 75.7 N
 OK
40 °C -2.2% 7.55 kg / 16.65 lbs
7550.2 g / 74.1 N
 OK
60 °C -4.4% 7.38 kg / 16.27 lbs
7380.3 g / 72.4 N
80 °C -6.6% 7.21 kg / 15.90 lbs
7210.5 g / 70.7 N
100 °C -28.8% 5.50 kg / 12.12 lbs
5496.6 g / 53.9 N
Ordinary NdFeB products irreversibly lose parameters above the temperature limit. Avoid high temperatures – heat can permanently damage this magnet. As the temperature rises, the neodymium's force momentarily lowers. Do not use this magnet in hot environments exceeding its safe range. Ignoring the limit will lead to irreversible degradation of magnetic properties.
*Engineering note: Thermal stability depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (pancake types) are more susceptible to demagnetization sooner than long magnets. The danger warning in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (attraction) - field range
MP 25x7.5/4.5x5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 9.91 kg / 21.84 lbs
3 484 Gs
1.49 kg / 3.28 lbs
1486 g / 14.6 N
 N/A
1 mm 9.51 kg / 20.96 lbs
3 909 Gs
1.43 kg / 3.14 lbs
1426 g / 14.0 N
 8.56 kg / 18.87 lbs
~0 Gs
2 mm 9.05 kg / 19.94 lbs
3 813 Gs
1.36 kg / 2.99 lbs
1357 g / 13.3 N
 8.14 kg / 17.95 lbs
~0 Gs
3 mm 8.54 kg / 18.83 lbs
3 705 Gs
1.28 kg / 2.82 lbs
1281 g / 12.6 N
 7.69 kg / 16.94 lbs
~0 Gs
5 mm 7.45 kg / 16.42 lbs
3 460 Gs
1.12 kg / 2.46 lbs
1117 g / 11.0 N
 6.70 kg / 14.78 lbs
~0 Gs
10 mm 4.78 kg / 10.53 lbs
2 771 Gs
0.72 kg / 1.58 lbs
717 g / 7.0 N
 4.30 kg / 9.48 lbs
~0 Gs
20 mm 1.54 kg / 3.41 lbs
1 576 Gs
0.23 kg / 0.51 lbs
232 g / 2.3 N
 1.39 kg / 3.06 lbs
~0 Gs
50 mm 0.06 kg / 0.13 lbs
312 Gs
0.01 kg / 0.02 lbs
9 g / 0.1 N
 0.05 kg / 0.12 lbs
~0 Gs
60 mm 0.03 kg / 0.06 lbs
202 Gs
0.00 kg / 0.01 lbs
4 g / 0.0 N
 0.02 kg / 0.05 lbs
~0 Gs
70 mm 0.01 kg / 0.03 lbs
138 Gs
0.00 kg / 0.00 lbs
2 g / 0.0 N
 0.01 kg / 0.02 lbs
~0 Gs
80 mm 0.01 kg / 0.01 lbs
97 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
90 mm 0.00 kg / 0.01 lbs
71 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
54 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two magnetic products attract each other from a wider radius than a magnet and steel combination. Such a system of two magnets creates a more powerful interaction and a further horizon of action. Planning to create a solid fastener? Apply two magnets instead of a neodymium and a striker plate. Be careful that when attracting two neodymiums, the pinch force is extreme. The repulsion force is marginally weaker than the attraction, but still impressive.
*The magnetic induction between like poles drops to ~0 Gs in the exact middle between the magnets (due to field cancellation).
Note: Results demonstrate friction force of a pair of same neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - precautionary measures
MP 25x7.5/4.5x5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 9.5 cm
Hearing aid 10 Gs (1.0 mT) 7.5 cm
Timepiece 20 Gs (2.0 mT) 6.0 cm
Mobile device 40 Gs (4.0 mT) 4.5 cm
Remote 50 Gs (5.0 mT) 4.0 cm
Payment card 400 Gs (40.0 mT) 2.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm
Powerful magnet radiation is a large risk to electronics as well as medical implants. These NdFeB products produce a flux that destroys function of digital equipment. Be aware: the unseen radiation penetrates the body and plastic. Exceptional care must be exercised by people with cochlear implants and insulin pumps. The risk also applies to: mechanical watches, remotes, speakers, and displays. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - collision effects
MP 25x7.5/4.5x5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 23.97 km/h
(6.66 m/s)
 0.39 J
30 mm 25.47 km/h
(7.07 m/s)
 0.45 J
50 mm 25.50 km/h
(7.08 m/s)
 0.45 J
100 mm 25.51 km/h
(7.09 m/s)
 0.45 J
Neodymium magnets are delicate – a collision with steel causes immediate chipping. Control the attraction moment – a magnet released freely becomes dangerous. Striking energy can destroy the magnet or painful pinches to fingers. Always hold the magnet during mounting so it doesn't slam with momentum against the steel surface. A collision at high speed almost guarantees destruction of the magnet. Wear eye protection when working with large magnets.

Table 9: Surface protection spec
MP 25x7.5/4.5x5 / 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)
For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (Flux)
MP 25x7.5/4.5x5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 9 759 Mx 97.6 µWb
Pc Coefficient 0.25 Low (Flat)
Total magnetic flux passing through the pole surface. Essential parameter in coil applications and motors. The Pc coefficient determines the magnet's operating point.

Table 11: Submerged application
MP 25x7.5/4.5x5 / N38

Environment Effective steel pull Effect
Air (land) 7.72 kg Standard
Water (riverbed) 8.84 kg
(+1.12 kg buoyancy gain)
+14.5%
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. Sliding resistance

*Caution: On a vertical wall, the magnet retains only a fraction of its perpendicular strength.

2. Efficiency vs thickness

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

3. Temperature resistance

*For N38 material, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.25

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The Pc (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher Pc value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical and environmental data

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%

Sustainability

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: 030194-2026
Quick Unit Converter

Force (pull)

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It is ideally suited for places where solid attachment of the magnet to the substrate is required without the risk of detachment. Thanks to the hole (often for a screw), this model enables quick installation to wood, wall, plastic, or metal. It is also often used in advertising for fixing signs and in workshops for organizing tools.
This is a crucial issue when working with model MP 25x7.5/4.5x5 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. One turn too many can destroy the magnet, so do it slowly. It's a good idea to use a rubber spacer under the screw head, which will cushion the stresses. Remember: cracking during assembly results from material properties, not a product defect.
These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but is not sufficient for rain. Damage to the protective layer during assembly is the most common cause of rusting. This product is dedicated for inside building use. For outdoor applications, we recommend choosing magnets in hermetic housing or additional protection with varnish.
The inner hole diameter determines the maximum size of the mounting element. If the magnet does not have a chamfer (cone), we recommend using a screw with a flat or cylindrical head, or possibly using a washer. Aesthetic mounting requires selecting the appropriate head size.
It is a magnetic ring with a diameter of 25 mm and thickness 5 mm. The pulling force of this model is an impressive 7.72 kg, which translates to 75.69 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 7.5/4.5 mm.
These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. In the case of connecting two rings, make sure one is turned the right way. We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Advantages and disadvantages of Nd2Fe14B magnets.

Pros

Apart from their notable magnetic energy, neodymium magnets have these key benefits:
  • They do not lose power, even during around ten years – the decrease in strength is only ~1% (according to tests),
  • They have excellent resistance to magnetic field loss when exposed to external fields,
  • The use of an shiny layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • The surface of neodymium magnets generates a intense magnetic field – this is one of their assets,
  • Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
  • Possibility of exact machining and modifying to specific applications,
  • Universal use in innovative solutions – they serve a role in magnetic memories, brushless drives, medical equipment, and multitasking production systems.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Disadvantages of neodymium magnets:
  • They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • We recommend casing - magnetic mechanism, due to difficulties in producing nuts inside the magnet and complicated forms.
  • Health risk resulting from small fragments of magnets are risky, if swallowed, which becomes key in the context of child health protection. Additionally, small components of these magnets can be problematic in diagnostics medical when they are in the body.
  • With large orders the cost of neodymium magnets is economically unviable,

Pull force analysis

Maximum holding power of the magnet – what it depends on?

Information about lifting capacity was defined for optimal configuration, assuming:
  • on a block made of structural steel, perfectly concentrating the magnetic field
  • whose transverse dimension is min. 10 mm
  • with an ideally smooth touching surface
  • under conditions of gap-free contact (surface-to-surface)
  • for force acting at a right angle (in the magnet axis)
  • at ambient temperature approx. 20 degrees Celsius

Determinants of practical lifting force of a magnet

Effective lifting capacity is affected by working environment parameters, including (from most important):
  • Space between magnet and steel – every millimeter of separation (caused e.g. by veneer or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Steel grade – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
  • Surface condition – ground elements guarantee perfect abutment, which increases field saturation. Rough surfaces reduce efficiency.
  • Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under perpendicular forces, in contrast 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 reduces the load capacity.

Safe handling of neodymium magnets
Magnet fragility

NdFeB magnets are sintered ceramics, meaning they are very brittle. Impact of two magnets leads to them cracking into small pieces.

Safe distance

Very strong magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.

Medical implants

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

Dust explosion hazard

Fire hazard: Neodymium dust is explosive. Avoid machining magnets without safety gear as this may cause fire.

GPS and phone interference

GPS units and mobile phones are extremely sensitive to magnetism. Close proximity with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

This is not a toy

Product intended for adults. Tiny parts can be swallowed, causing serious injuries. Store away from children and animals.

Finger safety

Risk of injury: The pulling power is so great that it can cause hematomas, crushing, and broken bones. Protective gloves are recommended.

Sensitization to coating

Medical facts indicate that nickel (the usual finish) is a common allergen. If your skin reacts to metals, avoid touching magnets with bare hands or opt for coated magnets.

Do not underestimate power

Handle with care. Rare earth magnets attract from a long distance and connect with massive power, often faster than you can react.

Demagnetization risk

Do not overheat. NdFeB magnets are sensitive to heat. If you require operation above 80°C, look for special high-temperature series (H, SH, UH).

Safety First! More info about hazards in the article: Magnet Safety Guide.