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MW 70x40 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010097

GTIN/EAN: 5906301810964

5.00
Load capacity 164.24 kg / 1611.16 N Magnetic Induction 466.52 mT / 4665 Gs
Diameter Ø
70 mm [±0,1 mm]
Height
40 mm [±0,1 mm]
Weight
1154.54 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

view properties »

321.46 zł net / pcs

395.40 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 data - MW 70x40 / N38 - cylindrical magnet

Specification / characteristics - MW 70x40 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010097
GTIN/EAN 5906301810964
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 70 mm [±0,1 mm]
Height 40 mm [±0,1 mm]
Weight 1154.54 g
Magnetization Direction ↑ axial
Load capacity ~ ? 164.24 kg / 1611.16 N
Magnetic Induction ~ ? 466.52 mT / 4665 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 70x40 / 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

Engineering simulation of the product - data

Presented data constitute the result of a physical analysis. Values are based on algorithms for the material Nd2Fe14B. Real-world parameters may deviate from the simulation results. Treat these calculations as a supplementary guide when designing systems.

Table 1: Static force (pull vs distance) - characteristics
MW 70x40 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4665 Gs
466.5 mT
 164.24 kg / 362.09 pounds
164240.0 g / 1611.2 N
 dangerous!
1 mm 4538 Gs
453.8 mT
 155.47 kg / 342.75 pounds
155467.9 g / 1525.1 N
 dangerous!
2 mm 4409 Gs
440.9 mT
 146.74 kg / 323.52 pounds
146744.5 g / 1439.6 N
 dangerous!
3 mm 4279 Gs
427.9 mT
 138.20 kg / 304.68 pounds
138201.8 g / 1355.8 N
 dangerous!
5 mm 4017 Gs
401.7 mT
 121.81 kg / 268.54 pounds
121806.5 g / 1194.9 N
 dangerous!
10 mm 3376 Gs
337.6 mT
 86.03 kg / 189.65 pounds
86025.3 g / 843.9 N
 dangerous!
15 mm 2788 Gs
278.8 mT
 58.69 kg / 129.38 pounds
58686.8 g / 575.7 N
 dangerous!
20 mm 2279 Gs
227.9 mT
 39.22 kg / 86.46 pounds
39215.6 g / 384.7 N
 dangerous!
30 mm 1511 Gs
151.1 mT
 17.22 kg / 37.97 pounds
17222.5 g / 169.0 N
 dangerous!
50 mm 699 Gs
69.9 mT
 3.69 kg / 8.13 pounds
3690.0 g / 36.2 N
 strong
Pulling power drops sharply per each millimeter of gap. Keep in mind that even the smallest gap (e.g., dirt, varnish, rust) noticeably diminishes the holding power. Magnets work strongest at the point of direct contact; distance nullifies the power. Notice how quickly the pull force drop, when the magnet does not touch directly to the steel surface. When calculating the arrangement, avoid additional spacers.

Table 2: Vertical capacity (wall)
MW 70x40 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 32.85 kg / 72.42 pounds
32848.0 g / 322.2 N
1 mm Stal (~0.2) 31.09 kg / 68.55 pounds
31094.0 g / 305.0 N
2 mm Stal (~0.2) 29.35 kg / 64.70 pounds
29348.0 g / 287.9 N
3 mm Stal (~0.2) 27.64 kg / 60.94 pounds
27640.0 g / 271.1 N
5 mm Stal (~0.2) 24.36 kg / 53.71 pounds
24362.0 g / 239.0 N
10 mm Stal (~0.2) 17.21 kg / 37.93 pounds
17206.0 g / 168.8 N
15 mm Stal (~0.2) 11.74 kg / 25.88 pounds
11738.0 g / 115.1 N
20 mm Stal (~0.2) 7.84 kg / 17.29 pounds
7844.0 g / 76.9 N
30 mm Stal (~0.2) 3.44 kg / 7.59 pounds
3444.0 g / 33.8 N
50 mm Stal (~0.2) 0.74 kg / 1.63 pounds
738.0 g / 7.2 N
The following data defines the approximate force needed to initiate the downward movement of the magnet downwards on a upright metal surface (considering standard friction coefficient). This parameter is relative to the separation distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 70x40 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
49.27 kg / 108.63 pounds
49272.0 g / 483.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
32.85 kg / 72.42 pounds
32848.0 g / 322.2 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
16.42 kg / 36.21 pounds
16424.0 g / 161.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
82.12 kg / 181.04 pounds
82120.0 g / 805.6 N
When placing a magnet on a upright surface (e.g., a car body), it will only hold barely about 20%-30% of its nominal power. Gravitational force and a low friction coefficient cause that magnets slip faster than they detach. Planning a hanger? Remember that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the holder will give way down under a noticeably lighter load. Utilizing a rubberized layer can effectively improve the result.

Table 4: Material efficiency (substrate influence) - power losses
MW 70x40 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
3%
 5.47 kg / 12.07 pounds
5474.7 g / 53.7 N
1 mm
8%
 13.69 kg / 30.17 pounds
13686.7 g / 134.3 N
2 mm
17%
 27.37 kg / 60.35 pounds
27373.3 g / 268.5 N
3 mm
25%
 41.06 kg / 90.52 pounds
41060.0 g / 402.8 N
5 mm
42%
 68.43 kg / 150.87 pounds
68433.3 g / 671.3 N
10 mm
83%
 136.87 kg / 301.74 pounds
136866.7 g / 1342.7 N
11 mm
92%
 150.55 kg / 331.91 pounds
150553.3 g / 1476.9 N
12 mm
100%
 164.24 kg / 362.09 pounds
164240.0 g / 1611.2 N
A thin sheet is unable to absorb the entire magnetic field, which weakens actual performance of the magnet. If you install a neodymium to a weak sheet, the magnetism will penetrate right through and the attraction force will be weaker. To utilize the maximum of this neodymium's power, you require a sufficiently solid element of steel. The material oversaturation means that on sheet metal structures (e.g., thin profiles), the magnet holds weaker. We suggest choosing the steel thickness based on the following data.

Table 5: Thermal stability (material behavior) - resistance threshold
MW 70x40 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 164.24 kg / 362.09 pounds
164240.0 g / 1611.2 N
 OK
40 °C -2.2% 160.63 kg / 354.12 pounds
160626.7 g / 1575.7 N
 OK
60 °C -4.4% 157.01 kg / 346.15 pounds
157013.4 g / 1540.3 N
 OK
80 °C -6.6% 153.40 kg / 338.19 pounds
153400.2 g / 1504.9 N
100 °C -28.8% 116.94 kg / 257.81 pounds
116938.9 g / 1147.2 N
Classic neodymiums change their properties parameters above the temperature limit. Protect against heat – excessive heat can permanently damage this magnet. With increasing heat, the magnet's power briefly lowers. Refrain from using this magnet close to ovens exceeding its working range. Exceeding the critical threshold will lead to irreversible degradation of magnetic properties.
*Engineering note: Temperature resistance depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low permeance coefficient) risk losing magnetic properties sooner than long magnets. Warning indicator in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 70x40 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 516.26 kg / 1138.16 pounds
5 679 Gs
77.44 kg / 170.72 pounds
77439 g / 759.7 N
 N/A
1 mm 502.57 kg / 1107.98 pounds
9 205 Gs
75.39 kg / 166.20 pounds
75385 g / 739.5 N
 452.31 kg / 997.18 pounds
~0 Gs
2 mm 488.69 kg / 1077.37 pounds
9 077 Gs
73.30 kg / 161.61 pounds
73303 g / 719.1 N
 439.82 kg / 969.63 pounds
~0 Gs
3 mm 474.91 kg / 1047.01 pounds
8 948 Gs
71.24 kg / 157.05 pounds
71237 g / 698.8 N
 427.42 kg / 942.31 pounds
~0 Gs
5 mm 447.76 kg / 987.15 pounds
8 688 Gs
67.16 kg / 148.07 pounds
67164 g / 658.9 N
 402.99 kg / 888.43 pounds
~0 Gs
10 mm 382.88 kg / 844.10 pounds
8 034 Gs
57.43 kg / 126.62 pounds
57432 g / 563.4 N
 344.59 kg / 759.69 pounds
~0 Gs
20 mm 270.41 kg / 596.14 pounds
6 752 Gs
40.56 kg / 89.42 pounds
40561 g / 397.9 N
 243.37 kg / 536.53 pounds
~0 Gs
50 mm 81.66 kg / 180.03 pounds
3 710 Gs
12.25 kg / 27.01 pounds
12249 g / 120.2 N
 73.50 kg / 162.03 pounds
~0 Gs
60 mm 54.14 kg / 119.35 pounds
3 021 Gs
8.12 kg / 17.90 pounds
8120 g / 79.7 N
 48.72 kg / 107.41 pounds
~0 Gs
70 mm 36.14 kg / 79.69 pounds
2 469 Gs
5.42 kg / 11.95 pounds
5422 g / 53.2 N
 32.53 kg / 71.72 pounds
~0 Gs
80 mm 24.40 kg / 53.80 pounds
2 028 Gs
3.66 kg / 8.07 pounds
3661 g / 35.9 N
 21.96 kg / 48.42 pounds
~0 Gs
90 mm 16.70 kg / 36.82 pounds
1 678 Gs
2.51 kg / 5.52 pounds
2505 g / 24.6 N
 15.03 kg / 33.14 pounds
~0 Gs
100 mm 11.60 kg / 25.57 pounds
1 398 Gs
1.74 kg / 3.84 pounds
1740 g / 17.1 N
 10.44 kg / 23.01 pounds
~0 Gs
Two magnets attract each other from a significantly greater distance than a magnet and sheet setup. The setup of two magnets creates a more powerful interaction and a further horizon of performance. Designing a solid fastener? Apply two magnets instead of a neodymium and a striker plate. Remember that when attracting two neodymiums, the pinch force is massive. The repulsion force is slightly lower than the attraction, but still significant.
*Flux density between like poles drops to ~0 Gs at the geometric center of the gap (due to field cancellation).
Important: Calculations show sliding force of a pair of matching magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (implants) - warnings
MW 70x40 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 37.5 cm
Hearing aid 10 Gs (1.0 mT) 29.5 cm
Mechanical watch 20 Gs (2.0 mT) 23.0 cm
Mobile device 40 Gs (4.0 mT) 17.5 cm
Car key 50 Gs (5.0 mT) 16.5 cm
Payment card 400 Gs (40.0 mT) 7.0 cm
HDD hard drive 600 Gs (60.0 mT) 5.5 cm
A strong magnetic field is a real danger to electronic devices as well as medical implants. These neodymiums produce a field that disrupts operation of digital equipment. Notice: the invisible magnetic field passes through tissues and housings. Exceptional care must be exercised by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, remotes, speakers, and displays. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - collision effects
MW 70x40 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 16.46 km/h
(4.57 m/s)
 12.06 J
30 mm 21.49 km/h
(5.97 m/s)
 20.57 J
50 mm 22.36 km/h
(6.21 m/s)
 22.26 J
100 mm 22.63 km/h
(6.28 m/s)
 22.80 J
NdFeB products are prone to chipping – a strong collision with metal risks their cracking. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Kinetic force can destroy the magnet or dangerous crushing to fingers. Be sure to control the product during bringing near metal so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Wear safety glasses when handling with large magnets.

Table 9: Coating parameters (durability)
MW 70x40 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Flux)
MW 70x40 / N38

Parameter Value SI Unit / Description
Magnetic Flux 180 982 Mx 1809.8 µWb
Pc Coefficient 0.64 High (Stable)
Total magnetic flux emitted by the pole surface. Key data for generator designers and motors. Pc value determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 70x40 / N38

Environment Effective steel pull Effect
Air (land) 164.24 kg Standard
Water (riverbed) 188.05 kg
(+23.81 kg buoyancy gain)
+14.5%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Wall mount (shear)

*Warning: On a vertical wall, the magnet holds just ~20% of its max power.

2. Efficiency vs thickness

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

3. Heat tolerance

*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) = 0.64

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

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: 010097-2026
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This product is an exceptionally strong rod magnet, composed of advanced NdFeB material, which, at dimensions of Ø70x40 mm, guarantees the highest energy density. This specific item 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 impressive force (approx. 164.24 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is ideal for building electric motors, advanced sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the pull force of 1611.16 N with a weight of only 1154.54 g, this rod 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., 70.1 mm) using epoxy glues. 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.
Magnets N38 are strong enough for 90% of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø70x40), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 70 mm and height 40 mm. The key parameter here is the holding force amounting to approximately 164.24 kg (force ~1611.16 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 40 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is standard when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized diametrically if your project requires it.

Pros as well as cons of rare earth magnets.

Strengths

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • They retain full power for nearly ten years – the drop is just ~1% (in theory),
  • They possess excellent resistance to weakening of magnetic properties due to external fields,
  • In other words, due to the shiny layer of gold, the element becomes visually attractive,
  • They feature high magnetic induction at the operating surface, making them more effective,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
  • Possibility of precise modeling and adjusting to precise requirements,
  • Key role in innovative solutions – they find application in magnetic memories, electric drive systems, medical equipment, also multitasking production systems.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Limitations

Characteristics of disadvantages of neodymium magnets: weaknesses and usage proposals
  • To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Limited ability of producing nuts in the magnet and complicated forms - preferred is casing - magnetic holder.
  • Potential hazard resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Additionally, small elements of these products are able to complicate diagnosis medical when they are in the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Maximum lifting capacity of the magnet – what contributes to it?

The force parameter is a measurement result executed under specific, ideal conditions:
  • using a base made of mild steel, functioning as a circuit closing element
  • whose thickness equals approx. 10 mm
  • with an ideally smooth touching surface
  • without the slightest clearance between the magnet and steel
  • during pulling in a direction perpendicular to the mounting surface
  • in neutral thermal conditions

Practical aspects of lifting capacity – factors

During everyday use, the real power is determined by several key aspects, presented from the most important:
  • Distance – the presence of foreign body (rust, dirt, air) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
  • Loading method – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
  • Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
  • Material type – ideal substrate is pure iron steel. Stainless steels may generate lower lifting capacity.
  • Surface structure – the more even the surface, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
  • Temperature influence – high temperature reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity testing was performed on a smooth plate of optimal thickness, under a perpendicular pulling force, whereas under shearing force the holding force is lower. Moreover, even a small distance between the magnet and the plate reduces the lifting capacity.

Safe handling of neodymium magnets
Crushing force

Protect your hands. Two large magnets will snap together instantly with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Implant safety

People with a ICD must keep an large gap from magnets. The magnetism can stop the functioning of the implant.

Nickel allergy

It is widely known that nickel (the usual finish) is a strong allergen. If you have an allergy, refrain from direct skin contact or opt for versions in plastic housing.

Keep away from computers

Do not bring magnets close to a wallet, computer, or screen. The magnetism can permanently damage these devices and wipe information from cards.

Do not underestimate power

Be careful. Neodymium magnets act from a long distance and connect with huge force, often faster than you can react.

Heat warning

Avoid heat. NdFeB magnets are sensitive to heat. If you require resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

Protective goggles

Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.

Do not drill into magnets

Dust generated during cutting of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.

Do not give to children

Only for adults. Tiny parts pose a choking risk, leading to serious injuries. Store away from kids and pets.

Phone sensors

A powerful magnetic field negatively affects the operation of compasses in phones and navigation systems. Keep magnets near a smartphone to prevent damaging the sensors.

Warning! More info about hazards in the article: Safety of working with magnets.