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MPL 30x20x4 / N38 - lamellar magnet

lamellar magnet

Catalog no 020286

GTIN/EAN: 5906301811848

Load capacity 6.30 kg / 61.84 N Magnetic Induction 180.57 mT / 1806 Gs
length
30 mm [±0,1 mm]
Width
20 mm [±0,1 mm]
Height
4 mm [±0,1 mm]
Weight
18 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

view technical data »

8.32 zł net / pcs

10.23 zł with VAT (23% VAT) / pcs

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Frequently asked questions

How much will a block magnet really hold?
The catalogue force is measured in full contact with smooth steel at least 10 mm thick, pulled perpendicular, at about 20 °C. On 1 mm sheet about 50% of that value remains, on 0.5 mm about 25%. Mounted on a vertical wall the realistic figure is 20–30%, because the load is then in shear rather than in tension.
What is the maximum working temperature?
Standard N-series grades up to 80 °C, and N50, N52 and N54 up to 60 °C. Above the maximum working temperature the loss stops being reversible. The Curie temperature, at which magnetic properties are lost completely, is about 310 °C.
What safety factor should I allow?
At least twice the mass of the item, and three to five times for vertical mounting. The margin covers sheet thickness, surface condition, any layer of paint or rust, and vibration.

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 - MPL 30x20x4 / N38 - lamellar magnet

Specification / characteristics - MPL 30x20x4 / N38 - lamellar magnet

properties
properties values
Cat. no. 020286
GTIN/EAN 5906301811848
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
length 30 mm [±0,1 mm]
Width 20 mm [±0,1 mm]
Height 4 mm [±0,1 mm]
Weight 18 g
Magnetization Direction ↑ axial
Load capacity ~ ? 6.30 kg / 61.84 N
Magnetic Induction ~ ? 180.57 mT / 1806 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 30x20x4 / N38 - lamellar 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 magnet - data

These data constitute the outcome of a mathematical simulation. Results are based on models for the material Nd2Fe14B. Real-world conditions might slightly differ from theoretical values. Please consider these data as a preliminary roadmap for designers.

Table 1: Static force (force vs gap) - interaction chart
MPL 30x20x4 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1805 Gs
180.5 mT
 6.30 kg / 13.89 pounds
6300.0 g / 61.8 N
 warning
1 mm 1728 Gs
172.8 mT
 5.77 kg / 12.72 pounds
5771.5 g / 56.6 N
 warning
2 mm 1628 Gs
162.8 mT
 5.13 kg / 11.30 pounds
5125.7 g / 50.3 N
 warning
3 mm 1515 Gs
151.5 mT
 4.43 kg / 9.78 pounds
4434.6 g / 43.5 N
 warning
5 mm 1271 Gs
127.1 mT
 3.12 kg / 6.89 pounds
3124.3 g / 30.6 N
 warning
10 mm 751 Gs
75.1 mT
 1.09 kg / 2.40 pounds
1088.7 g / 10.7 N
 low risk
15 mm 435 Gs
43.5 mT
 0.37 kg / 0.81 pounds
366.3 g / 3.6 N
 low risk
20 mm 262 Gs
26.2 mT
 0.13 kg / 0.29 pounds
132.6 g / 1.3 N
 low risk
30 mm 110 Gs
11.0 mT
 0.02 kg / 0.05 pounds
23.2 g / 0.2 N
 low risk
50 mm 30 Gs
3.0 mT
 0.00 kg / 0.00 pounds
1.8 g / 0.0 N
 low risk
Magnetic force decreases drastically with every subsequent millimeter of spacing. Note that even the smallest gap (e.g., contamination, varnish, veneer) strongly diminishes the holding power. Neodymiums work strongest in perfect adhesion; distance kills the power. Notice how quickly the pull force drop, when the product does not adhere flatly to the metal substrate. When designing the mounting, eliminate additional spacers.

Table 2: Vertical load (vertical surface)
MPL 30x20x4 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.26 kg / 2.78 pounds
1260.0 g / 12.4 N
1 mm Stal (~0.2) 1.15 kg / 2.54 pounds
1154.0 g / 11.3 N
2 mm Stal (~0.2) 1.03 kg / 2.26 pounds
1026.0 g / 10.1 N
3 mm Stal (~0.2) 0.89 kg / 1.95 pounds
886.0 g / 8.7 N
5 mm Stal (~0.2) 0.62 kg / 1.38 pounds
624.0 g / 6.1 N
10 mm Stal (~0.2) 0.22 kg / 0.48 pounds
218.0 g / 2.1 N
15 mm Stal (~0.2) 0.07 kg / 0.16 pounds
74.0 g / 0.7 N
20 mm Stal (~0.2) 0.03 kg / 0.06 pounds
26.0 g / 0.3 N
30 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
The table below presents the theoretical shear load necessary to initiate the sliding of the magnet vertically against a upright metal surface (assuming standard friction coefficient). The holding force is relative to the gap size between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 30x20x4 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
1.89 kg / 4.17 pounds
1890.0 g / 18.5 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.26 kg / 2.78 pounds
1260.0 g / 12.4 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.63 kg / 1.39 pounds
630.0 g / 6.2 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
3.15 kg / 6.94 pounds
3150.0 g / 30.9 N
When placing a element on a upright surface (e.g., a board), it will only hold just approx. 20%-30% of nominal attraction strength. Gravitational force and a weak degree of grip mean that magnets move down easier than they pull off. Planning a vertical fastening? Remember that the sliding force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will slip down under a significantly smaller cargo. Application of an anti-slip coating can drastically increase the grip.

Table 4: Steel thickness (substrate influence) - power losses
MPL 30x20x4 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.63 kg / 1.39 pounds
630.0 g / 6.2 N
1 mm
25%
 1.58 kg / 3.47 pounds
1575.0 g / 15.5 N
2 mm
50%
 3.15 kg / 6.94 pounds
3150.0 g / 30.9 N
3 mm
75%
 4.73 kg / 10.42 pounds
4725.0 g / 46.4 N
5 mm
100%
 6.30 kg / 13.89 pounds
6300.0 g / 61.8 N
10 mm
100%
 6.30 kg / 13.89 pounds
6300.0 g / 61.8 N
11 mm
100%
 6.30 kg / 13.89 pounds
6300.0 g / 61.8 N
12 mm
100%
 6.30 kg / 13.89 pounds
6300.0 g / 61.8 N
A thin metal plate cannot conduct the full magnetic flux, which squanders power of the holder. Should you mount a strong magnet to a thin surface, the magnetism will pass right through and the holding will be smaller. To utilize 100% of this neodymium's potential, you require a sufficiently solid element of metal. The saturation phenomenon means that on sheet metal structures (e.g., thin profiles), the holder shows lower pull force. We recommend selecting the steel thickness according to the table below.

Table 5: Working in heat (stability) - resistance threshold
MPL 30x20x4 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 6.30 kg / 13.89 pounds
6300.0 g / 61.8 N
 OK
40 °C -2.2% 6.16 kg / 13.58 pounds
6161.4 g / 60.4 N
 OK
60 °C -4.4% 6.02 kg / 13.28 pounds
6022.8 g / 59.1 N
80 °C -6.6% 5.88 kg / 12.97 pounds
5884.2 g / 57.7 N
100 °C -28.8% 4.49 kg / 9.89 pounds
4485.6 g / 44.0 N
Classic neodymiums change their properties strength past the thermal threshold. Avoid high temperatures – excessive heat can permanently damage this product. With every degree above norm, the neodymium's force momentarily decreases. Avoid using this product near heat sources higher than its working range. Ignoring the limit will lead to permanent loss of magnetic properties.
*Engineering note: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (pancake types) may lose charge permanently at lower temperatures than taller cylinders. The danger warning in the table indicates permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 30x20x4 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 12.06 kg / 26.58 pounds
3 198 Gs
1.81 kg / 3.99 pounds
1809 g / 17.7 N
 N/A
1 mm 11.59 kg / 25.55 pounds
3 540 Gs
1.74 kg / 3.83 pounds
1739 g / 17.1 N
 10.43 kg / 23.00 pounds
~0 Gs
2 mm 11.05 kg / 24.35 pounds
3 456 Gs
1.66 kg / 3.65 pounds
1657 g / 16.3 N
 9.94 kg / 21.92 pounds
~0 Gs
3 mm 10.45 kg / 23.03 pounds
3 361 Gs
1.57 kg / 3.45 pounds
1567 g / 15.4 N
 9.40 kg / 20.73 pounds
~0 Gs
5 mm 9.15 kg / 20.18 pounds
3 146 Gs
1.37 kg / 3.03 pounds
1373 g / 13.5 N
 8.24 kg / 18.16 pounds
~0 Gs
10 mm 5.98 kg / 13.18 pounds
2 543 Gs
0.90 kg / 1.98 pounds
897 g / 8.8 N
 5.38 kg / 11.86 pounds
~0 Gs
20 mm 2.08 kg / 4.59 pounds
1 501 Gs
0.31 kg / 0.69 pounds
313 g / 3.1 N
 1.88 kg / 4.13 pounds
~0 Gs
50 mm 0.10 kg / 0.22 pounds
331 Gs
0.02 kg / 0.03 pounds
15 g / 0.1 N
 0.09 kg / 0.20 pounds
~0 Gs
60 mm 0.04 kg / 0.10 pounds
219 Gs
0.01 kg / 0.01 pounds
7 g / 0.1 N
 0.04 kg / 0.09 pounds
~0 Gs
70 mm 0.02 kg / 0.05 pounds
151 Gs
0.00 kg / 0.01 pounds
3 g / 0.0 N
 0.02 kg / 0.04 pounds
~0 Gs
80 mm 0.01 kg / 0.02 pounds
108 Gs
0.00 kg / 0.00 pounds
2 g / 0.0 N
 0.01 kg / 0.02 pounds
~0 Gs
90 mm 0.01 kg / 0.01 pounds
80 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.01 pounds
60 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two magnetic products attract each other from a significantly greater distance than a neodymium and metal combination. The connection of two magnets generates a stronger field and a larger range of action. Planning to create a powerful holder? Use a pair of magnets instead of a neodymium and a steel. Be careful that when bringing together two magnets, the collision energy is extreme. The repulsion force is marginally weaker than the attraction, but still impressive.
*The magnetic induction for N-N configuration is approximately ~0 Gs in the exact middle between the magnets (resulting from vector opposition).
* Results demonstrate sliding force of two identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - precautionary measures
MPL 30x20x4 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 10.0 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) 4.5 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 IT equipment and medical implants. These magnets produce a field that disrupts operation of digital equipment. Notice: the invisible magnetic field penetrates the body and housings. Increased vigilance must be exercised by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, remotes, speakers, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - warning
MPL 30x20x4 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 21.81 km/h
(6.06 m/s)
 0.33 J
30 mm 23.39 km/h
(6.50 m/s)
 0.38 J
50 mm 23.42 km/h
(6.51 m/s)
 0.38 J
100 mm 23.44 km/h
(6.51 m/s)
 0.38 J
NdFeB products are very brittle – a collision with steel risks their cracking. Control the attraction moment – a magnet released freely becomes dangerous. Kinetic force can destroy the magnet or painful pinches to skin. Always hold the magnet during mounting so it doesn't hit with great force against the metal. A collision at high speed almost guarantees destruction of the magnet. Use safety goggles when working with large magnets.

Table 9: Corrosion resistance
MPL 30x20x4 / 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. Note the thickness of the protective layer.

Table 10: Construction data (Pc)
MPL 30x20x4 / N38

Parameter Value SI Unit / Description
Magnetic Flux 12 775 Mx 127.8 µWb
Pc Coefficient 0.22 Low (Flat)
Total magnetic flux emitted by the magnet pole. Key data when building generators and motors. The Pc coefficient determines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MPL 30x20x4 / N38

Environment Effective steel pull Effect
Air (land) 6.30 kg Standard
Water (riverbed) 7.21 kg
(+0.91 kg buoyancy gain)
+14.5%
Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
The magnetic field penetrates through water without any losses. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Wall mount (shear)

*Note: On a vertical surface, the magnet retains merely approx. 20-30% of its nominal pull.

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) severely limits the holding force.

3. Power loss vs temp

*For N38 grade, the safety limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.22

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%

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: 020286-2026
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Component MPL 30x20x4 / N38 features a flat shape and industrial pulling force, making it an ideal solution for building separators and machines. This rectangular block with a force of 61.84 N is ready for shipment in 24h, allowing for rapid realization of your project. Furthermore, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.
Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. Watch your fingers! Magnets with a force of 6.30 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
Plate magnets MPL 30x20x4 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. They work great as invisible mounts under tiles, wood, or glass. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.
Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Remember to roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. In practice, this means that this magnet has the greatest attraction force on its main planes (30x20 mm), which is ideal for flat mounting. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.
The presented product is a neodymium magnet with precisely defined parameters: 30 mm (length), 20 mm (width), and 4 mm (thickness). It is a magnetic block with dimensions 30x20x4 mm and a self-weight of 18 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths as well as weaknesses of neodymium magnets.

Advantages

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They do not lose power, even after approximately 10 years – the reduction in strength is only ~1% (theoretically),
  • Neodymium magnets are characterized by remarkably resistant to loss of magnetic properties caused by external magnetic fields,
  • By using a lustrous layer of silver, the element has an nice look,
  • Magnets are characterized by very high magnetic induction on the surface,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
  • Thanks to freedom in shaping and the ability to customize to complex applications,
  • Significant place in modern industrial fields – they serve a role in mass storage devices, electric motors, medical devices, also modern systems.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Disadvantages of NdFeB magnets:
  • At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • Limited ability of producing nuts in the magnet and complicated forms - preferred is cover - mounting mechanism.
  • Possible danger resulting from small fragments of magnets are risky, if swallowed, which gains importance in the context of child health protection. It is also worth noting that small elements of these products can complicate diagnosis medical after entering the body.
  • With budget limitations the cost of neodymium magnets is a challenge,

Pull force analysis

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

The load parameter shown represents the peak performance, recorded under laboratory conditions, namely:
  • with the application of a sheet made of low-carbon steel, ensuring full magnetic saturation
  • possessing a thickness of minimum 10 mm to ensure full flux closure
  • with an ideally smooth touching surface
  • under conditions of no distance (surface-to-surface)
  • during pulling in a direction vertical to the plane
  • at room temperature

Practical aspects of lifting capacity – factors

It is worth knowing that the magnet holding may be lower depending on elements below, starting with the most relevant:
  • Distance – existence of any layer (paint, tape, air) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Load vector – maximum parameter is available only during pulling at a 90° angle. The shear force of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
  • Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
  • Steel grade – ideal substrate is pure iron steel. Cast iron may have worse magnetic properties.
  • Plate texture – smooth surfaces ensure maximum contact, which increases force. Uneven metal weaken the grip.
  • Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was conducted on a smooth plate of suitable thickness, under perpendicular forces, in contrast under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Additionally, even a slight gap between the magnet’s surface and the plate reduces the holding force.

H&S for magnets
Keep away from children

Adult use only. Tiny parts can be swallowed, causing intestinal necrosis. Keep away from children and animals.

Sensitization to coating

Medical facts indicate that nickel (standard magnet coating) is a potent allergen. If your skin reacts to metals, prevent direct skin contact or opt for versions in plastic housing.

Magnets are brittle

Despite the nickel coating, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Bone fractures

Danger of trauma: The pulling power is so immense that it can result in blood blisters, pinching, and broken bones. Use thick gloves.

Electronic hazard

Equipment safety: Neodymium magnets can damage payment cards and sensitive devices (pacemakers, medical aids, timepieces).

Danger to pacemakers

Patients with a pacemaker have to maintain an absolute distance from magnets. The magnetism can interfere with the operation of the implant.

Do not overheat magnets

Keep cool. NdFeB magnets are susceptible to temperature. If you require operation above 80°C, look for HT versions (H, SH, UH).

Machining danger

Dust produced during machining of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

GPS and phone interference

Remember: rare earth magnets generate a field that disrupts sensitive sensors. Maintain a separation from your phone, tablet, and navigation systems.

Safe operation

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

Warning! Want to know more? Read our article: Are neodymium magnets dangerous?