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MW 35x5 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010059

GTIN/EAN: 5906301810582

5.00
Load capacity 9.25 kg / 90.73 N Magnetic Induction 170.30 mT / 1703 Gs
Diameter Ø
35 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
36.08 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

view parameters »

11.23 zł net / pcs

13.81 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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Product card - MW 35x5 / N38 - cylindrical magnet

Specification / characteristics - MW 35x5 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010059
GTIN/EAN 5906301810582
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 35 mm [±0,1 mm]
Height 5 mm [±0,1 mm]
Weight 36.08 g
Magnetization Direction ↑ axial
Load capacity ~ ? 9.25 kg / 90.73 N
Magnetic Induction ~ ? 170.30 mT / 1703 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 35x5 / N38 - cylindrical magnet
properties values units
remenance Br [min. - max.] ? 12.2-12.6 kGs
remenance Br [min. - max.] ? 1220-1260 mT
coercivity bHc ? 10.8-11.5 kOe
coercivity bHc ? 860-915 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 36-38 BH max MGOe
energy density [min. - max.] ? 287-303 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

Engineering analysis of the product - data

These data are the direct effect of a mathematical analysis. Values are based on algorithms for the material Nd2Fe14B. Actual parameters might slightly differ from theoretical values. Treat these calculations as a preliminary roadmap for designers.

Table 1: Static force (pull vs distance) - characteristics
MW 35x5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1703 Gs
170.3 mT
 9.25 kg / 20.39 pounds
9250.0 g / 90.7 N
 medium risk
1 mm 1657 Gs
165.7 mT
 8.76 kg / 19.31 pounds
8759.4 g / 85.9 N
 medium risk
2 mm 1599 Gs
159.9 mT
 8.15 kg / 17.97 pounds
8152.2 g / 80.0 N
 medium risk
3 mm 1530 Gs
153.0 mT
 7.47 kg / 16.47 pounds
7468.5 g / 73.3 N
 medium risk
5 mm 1373 Gs
137.3 mT
 6.01 kg / 13.25 pounds
6011.5 g / 59.0 N
 medium risk
10 mm 959 Gs
95.9 mT
 2.93 kg / 6.47 pounds
2932.7 g / 28.8 N
 medium risk
15 mm 631 Gs
63.1 mT
 1.27 kg / 2.80 pounds
1270.4 g / 12.5 N
 low risk
20 mm 413 Gs
41.3 mT
 0.54 kg / 1.20 pounds
544.8 g / 5.3 N
 low risk
30 mm 190 Gs
19.0 mT
 0.12 kg / 0.25 pounds
115.2 g / 1.1 N
 low risk
50 mm 56 Gs
5.6 mT
 0.01 kg / 0.02 pounds
10.1 g / 0.1 N
 low risk
Magnetic force decreases sharply with every subsequent millimeter of spacing. Keep in mind that even a very thin break (e.g., dirt, paint, veneer) noticeably diminishes the holding power. Magnets work optimally during direct contact; air break weakens the force. Notice how flashily the load capacity plummet, when the magnet does not touch tightly to the steel surface. When designing the arrangement, discard additional spacers.

Table 2: Sliding capacity (wall)
MW 35x5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.85 kg / 4.08 pounds
1850.0 g / 18.1 N
1 mm Stal (~0.2) 1.75 kg / 3.86 pounds
1752.0 g / 17.2 N
2 mm Stal (~0.2) 1.63 kg / 3.59 pounds
1630.0 g / 16.0 N
3 mm Stal (~0.2) 1.49 kg / 3.29 pounds
1494.0 g / 14.7 N
5 mm Stal (~0.2) 1.20 kg / 2.65 pounds
1202.0 g / 11.8 N
10 mm Stal (~0.2) 0.59 kg / 1.29 pounds
586.0 g / 5.7 N
15 mm Stal (~0.2) 0.25 kg / 0.56 pounds
254.0 g / 2.5 N
20 mm Stal (~0.2) 0.11 kg / 0.24 pounds
108.0 g / 1.1 N
30 mm Stal (~0.2) 0.02 kg / 0.05 pounds
24.0 g / 0.2 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
The table below indicates the estimated weight limit necessary to initiate the downward movement of the magnet downwards along a vertical steel plate (considering typical friction). This value is relative to the distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 35x5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
2.78 kg / 6.12 pounds
2775.0 g / 27.2 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.85 kg / 4.08 pounds
1850.0 g / 18.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.93 kg / 2.04 pounds
925.0 g / 9.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
4.63 kg / 10.20 pounds
4625.0 g / 45.4 N
When hanging a element on a vertical plane (e.g., a car body), it will maintain barely about 20%-30% of nominal attraction strength. Gravitational force as well as a low friction coefficient cause that products slip faster than they pull off. Designing a hanger? Note that the sliding force is significantly lower than the perpendicular breakaway force. On a painted metal, the element will slide down under a significantly smaller load. Application of an anti-slip layer can significantly increase the grip.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 35x5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.93 kg / 2.04 pounds
925.0 g / 9.1 N
1 mm
25%
 2.31 kg / 5.10 pounds
2312.5 g / 22.7 N
2 mm
50%
 4.63 kg / 10.20 pounds
4625.0 g / 45.4 N
3 mm
75%
 6.94 kg / 15.29 pounds
6937.5 g / 68.1 N
5 mm
100%
 9.25 kg / 20.39 pounds
9250.0 g / 90.7 N
10 mm
100%
 9.25 kg / 20.39 pounds
9250.0 g / 90.7 N
11 mm
100%
 9.25 kg / 20.39 pounds
9250.0 g / 90.7 N
12 mm
100%
 9.25 kg / 20.39 pounds
9250.0 g / 90.7 N
A too thin steel is incapable of take in the entire magnetic field, which weakens actual performance of the holder. If you mount a strong magnet to a weak sheet, the field will penetrate right through and the attraction force will be weaker. To squeeze full efficiency of this neodymium's power, you require a sufficiently solid element of steel. The saturation effect causes that on sheet metal structures (e.g., car bodies), the holder holds weaker. We suggest choosing the steel thickness from these parameters.

Table 5: Thermal resistance (stability) - thermal limit
MW 35x5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 9.25 kg / 20.39 pounds
9250.0 g / 90.7 N
 OK
40 °C -2.2% 9.05 kg / 19.94 pounds
9046.5 g / 88.7 N
 OK
60 °C -4.4% 8.84 kg / 19.50 pounds
8843.0 g / 86.7 N
80 °C -6.6% 8.64 kg / 19.05 pounds
8639.5 g / 84.8 N
100 °C -28.8% 6.59 kg / 14.52 pounds
6586.0 g / 64.6 N
Ordinary NdFeB products irreversibly lose strength above the temperature limit. Protect against heat – heat can permanently demagnetize this magnet. With increasing heat, the magnet's capacity briefly decreases. Refrain from using this magnet close to heaters higher than its operating temperature limit. Exceeding the critical threshold will lead to permanent loss of magnetic properties.
*Important note: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Low-profile magnets (pancake types) are more susceptible to demagnetization under lower heat stress than long magnets. Red status in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field range
MW 35x5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 17.20 kg / 37.92 pounds
3 075 Gs
2.58 kg / 5.69 pounds
2580 g / 25.3 N
 N/A
1 mm 16.78 kg / 36.99 pounds
3 364 Gs
2.52 kg / 5.55 pounds
2517 g / 24.7 N
 15.10 kg / 33.29 pounds
~0 Gs
2 mm 16.29 kg / 35.91 pounds
3 314 Gs
2.44 kg / 5.39 pounds
2443 g / 24.0 N
 14.66 kg / 32.32 pounds
~0 Gs
3 mm 15.75 kg / 34.71 pounds
3 259 Gs
2.36 kg / 5.21 pounds
2362 g / 23.2 N
 14.17 kg / 31.24 pounds
~0 Gs
5 mm 14.54 kg / 32.05 pounds
3 131 Gs
2.18 kg / 4.81 pounds
2180 g / 21.4 N
 13.08 kg / 28.84 pounds
~0 Gs
10 mm 11.18 kg / 24.64 pounds
2 746 Gs
1.68 kg / 3.70 pounds
1677 g / 16.4 N
 10.06 kg / 22.18 pounds
~0 Gs
20 mm 5.45 kg / 12.02 pounds
1 918 Gs
0.82 kg / 1.80 pounds
818 g / 8.0 N
 4.91 kg / 10.82 pounds
~0 Gs
50 mm 0.45 kg / 1.00 pounds
552 Gs
0.07 kg / 0.15 pounds
68 g / 0.7 N
 0.41 kg / 0.90 pounds
~0 Gs
60 mm 0.21 kg / 0.47 pounds
380 Gs
0.03 kg / 0.07 pounds
32 g / 0.3 N
 0.19 kg / 0.42 pounds
~0 Gs
70 mm 0.11 kg / 0.24 pounds
269 Gs
0.02 kg / 0.04 pounds
16 g / 0.2 N
 0.10 kg / 0.21 pounds
~0 Gs
80 mm 0.06 kg / 0.13 pounds
197 Gs
0.01 kg / 0.02 pounds
9 g / 0.1 N
 0.05 kg / 0.11 pounds
~0 Gs
90 mm 0.03 kg / 0.07 pounds
147 Gs
0.00 kg / 0.01 pounds
5 g / 0.0 N
 0.03 kg / 0.06 pounds
~0 Gs
100 mm 0.02 kg / 0.04 pounds
112 Gs
0.00 kg / 0.01 pounds
3 g / 0.0 N
 0.02 kg / 0.04 pounds
~0 Gs
Two magnetic products interact from a significantly greater distance than a neodymium and metal setup. The setup of magnet-to-magnet creates a more powerful interaction and a further horizon of operation. Want to build a strong closure? Apply two magnets instead of a neodymium and a striker plate. Exercise caution that when connecting a pair of magnets, the impact force is extreme. The repulsion force is a bit weaker than the connection force, but still large.
*Flux density in repulsion mode reaches ~0 Gs at the midpoint of the gap (resulting from vector opposition).
* Figures apply to shear force of two identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - warnings
MW 35x5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 12.5 cm
Hearing aid 10 Gs (1.0 mT) 9.5 cm
Mechanical watch 20 Gs (2.0 mT) 7.5 cm
Mobile device 40 Gs (4.0 mT) 6.0 cm
Remote 50 Gs (5.0 mT) 5.5 cm
Payment card 400 Gs (40.0 mT) 2.5 cm
HDD hard drive 600 Gs (60.0 mT) 2.0 cm
Extremely neodym field poses a real danger to electronic devices and medical implants. These neodymiums generate a flux that disrupts operation of digital equipment. Be aware: the invisible magnetic field penetrates the body and plastic. 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. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - warning
MW 35x5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 20.66 km/h
(5.74 m/s)
 0.59 J
30 mm 23.38 km/h
(6.49 m/s)
 0.76 J
50 mm 23.50 km/h
(6.53 m/s)
 0.77 J
100 mm 23.52 km/h
(6.53 m/s)
 0.77 J
NdFeB products are delicate – a collision with steel risks their cracking. Pay attention to connection velocity – a neodymium left loose speeds with massive force. Striking energy can cause material chips or painful pinches to skin. Always hold the magnet during bringing near metal so it doesn't hit with great force against the metal. A collision at high speed almost guarantees destruction of the neodymium. Use safety goggles when working with large magnets.

Table 9: Anti-corrosion coating durability
MW 35x5 / N38

Technical parameter Value / Description
Coating type [NiCuNi] Nickel
Layer structure Nickel - Copper - Nickel
Layer thickness 10-20 µm
Salt spray test (SST) ? 24 h
Recommended environment Indoors only (dry)
The 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: Electrical data (Pc)
MW 35x5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 20 291 Mx 202.9 µWb
Pc Coefficient 0.22 Low (Flat)
Flux value emitted by the magnet pole. Key data in coil applications and motors. Pc value defines the magnet's operating point.

Table 11: Physics of underwater searching
MW 35x5 / N38

Environment Effective steel pull Effect
Air (land) 9.25 kg Standard
Water (riverbed) 10.59 kg
(+1.34 kg buoyancy gain)
+14.5%
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. Vertical hold

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

2. Steel saturation

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

3. Power loss vs temp

*For N38 material, 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

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.

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%

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: 010059-2026
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The offered product is an extremely powerful cylindrical magnet, composed of advanced NdFeB material, which, with dimensions of Ø35x5 mm, guarantees optimal power. This specific item is characterized by a tolerance of ±0.1mm and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 9.25 kg), this product is in stock from our warehouse in Poland, ensuring quick order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is ideal for building generators, advanced sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the high power of 90.73 N with a weight of only 36.08 g, this rod is indispensable in electronics and wherever low weight is crucial.
Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 35.1 mm) using two-component epoxy glues. To ensure stability in automation, anaerobic resins are used, which do not react with the nickel coating 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 (Ø35x5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.
This model is characterized by dimensions Ø35x5 mm, which, at a weight of 36.08 g, makes it an element with high magnetic energy density. The value of 90.73 N means that the magnet is capable of holding a weight many times exceeding its own mass of 36.08 g. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.
Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 35 mm. 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 as well as weaknesses of Nd2Fe14B magnets.

Advantages

Apart from their consistent power, neodymium magnets have these key benefits:
  • They have unchanged lifting capacity, and over nearly ten years their performance decreases symbolically – ~1% (in testing),
  • They do not lose their magnetic properties even under external field action,
  • In other words, due to the metallic finish of silver, the element becomes visually attractive,
  • Neodymium magnets deliver maximum magnetic induction on a small area, which ensures high operational effectiveness,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Due to the potential of free molding and customization to individualized requirements, neodymium magnets can be created in a wide range of geometric configurations, which increases their versatility,
  • Huge importance in innovative solutions – they find application in hard drives, motor assemblies, advanced medical instruments, and other advanced devices.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Weaknesses

Disadvantages of NdFeB magnets:
  • To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
  • Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • We recommend casing - magnetic mount, due to difficulties in producing threads inside the magnet and complicated shapes.
  • Possible danger related to microscopic parts of magnets pose a threat, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these products are able to be problematic in diagnostics medical after entering the body.
  • Due to expensive raw materials, their price exceeds standard values,

Pull force analysis

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

The declared magnet strength concerns the peak performance, recorded under ideal test conditions, meaning:
  • using a plate made of high-permeability steel, functioning as a circuit closing element
  • with a thickness no less than 10 mm
  • characterized by even structure
  • with zero gap (without paint)
  • for force applied at a right angle (in the magnet axis)
  • at room temperature

Lifting capacity in real conditions – factors

Holding efficiency is affected by working environment parameters, mainly (from priority):
  • Distance – the presence of foreign body (rust, dirt, air) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
  • Loading method – declared lifting capacity refers to detachment vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of nominal force).
  • Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Chemical composition of the base – low-carbon steel attracts best. Higher carbon content lower magnetic permeability and lifting capacity.
  • Surface structure – the more even the plate, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
  • Thermal factor – high temperature weakens magnetic field. Too high temperature can permanently damage the magnet.

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under a perpendicular pulling force, however under parallel forces the holding force is lower. Additionally, even a minimal clearance between the magnet and the plate reduces the lifting capacity.

Safe handling of NdFeB magnets
Product not for children

Only for adults. Tiny parts can be swallowed, leading to serious injuries. Keep away from children and animals.

Bone fractures

Big blocks can smash fingers in a fraction of a second. Under no circumstances put your hand betwixt two attracting surfaces.

Fire warning

Fire warning: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this risks ignition.

Threat to electronics

Intense magnetic fields can destroy records on credit cards, hard drives, and storage devices. Maintain a gap of min. 10 cm.

Metal Allergy

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If an allergic reaction occurs, immediately stop handling magnets and use protective gear.

Medical interference

Warning for patients: Powerful magnets disrupt medical devices. Keep at least 30 cm distance or ask another person to work with the magnets.

Caution required

Handle magnets consciously. Their powerful strength can shock even experienced users. Stay alert and do not underestimate their power.

Thermal limits

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

Compass and GPS

GPS units and smartphones are extremely susceptible to magnetism. Close proximity with a powerful NdFeB magnet can decalibrate the sensors in your phone.

Magnet fragility

Beware of splinters. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. Wear goggles.

Caution! Details about hazards in the article: Magnet Safety Guide.