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MW 33x30 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010058

GTIN/EAN: 5906301810575

Load capacity 35.84 kg / 351.54 N Magnetic Induction 543.05 mT / 5430 Gs
Diameter Ø
33 mm [±0,1 mm]
Height
30 mm [±0,1 mm]
Weight
192.44 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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43.00 zł net / pcs

52.89 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 - MW 33x30 / N38 - cylindrical magnet

Specification / characteristics - MW 33x30 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010058
GTIN/EAN 5906301810575
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 33 mm [±0,1 mm]
Height 30 mm [±0,1 mm]
Weight 192.44 g
Magnetization Direction ↑ axial
Load capacity ~ ? 35.84 kg / 351.54 N
Magnetic Induction ~ ? 543.05 mT / 5430 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 33x30 / 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

Technical simulation of the magnet - report

These values represent the result of a mathematical analysis. Values are based on models for the class Nd2Fe14B. Real-world parameters might slightly deviate from the simulation results. Please consider these data as a reference point for designers.

Table 1: Static pull force (pull vs distance) - interaction chart
MW 33x30 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5429 Gs
542.9 mT
 35.84 kg / 79.01 pounds
35840.0 g / 351.6 N
 crushing
1 mm 5098 Gs
509.8 mT
 31.60 kg / 69.67 pounds
31600.1 g / 310.0 N
 crushing
2 mm 4765 Gs
476.5 mT
 27.60 kg / 60.85 pounds
27601.7 g / 270.8 N
 crushing
3 mm 4436 Gs
443.6 mT
 23.93 kg / 52.76 pounds
23930.4 g / 234.8 N
 crushing
5 mm 3810 Gs
381.0 mT
 17.65 kg / 38.91 pounds
17650.2 g / 173.1 N
 crushing
10 mm 2518 Gs
251.8 mT
 7.71 kg / 17.00 pounds
7709.5 g / 75.6 N
 medium risk
15 mm 1650 Gs
165.0 mT
 3.31 kg / 7.30 pounds
3312.1 g / 32.5 N
 medium risk
20 mm 1105 Gs
110.5 mT
 1.49 kg / 3.27 pounds
1485.1 g / 14.6 N
 weak grip
30 mm 546 Gs
54.6 mT
 0.36 kg / 0.80 pounds
361.9 g / 3.5 N
 weak grip
50 mm 184 Gs
18.4 mT
 0.04 kg / 0.09 pounds
41.4 g / 0.4 N
 weak grip
Grip strength drops sharply per each millimeter of gap. Remember that every additional insulation layer (e.g., dirt, paint, dust) significantly weakens the grip. Neodymiums hold optimally at the point of direct contact; gap drastically cuts the force. See how rapidly the pull force fall, when the magnet does not touch tightly to the metal substrate. When planning the arrangement, discard redundant distances.

Table 2: Slippage hold (wall)
MW 33x30 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 7.17 kg / 15.80 pounds
7168.0 g / 70.3 N
1 mm Stal (~0.2) 6.32 kg / 13.93 pounds
6320.0 g / 62.0 N
2 mm Stal (~0.2) 5.52 kg / 12.17 pounds
5520.0 g / 54.2 N
3 mm Stal (~0.2) 4.79 kg / 10.55 pounds
4786.0 g / 47.0 N
5 mm Stal (~0.2) 3.53 kg / 7.78 pounds
3530.0 g / 34.6 N
10 mm Stal (~0.2) 1.54 kg / 3.40 pounds
1542.0 g / 15.1 N
15 mm Stal (~0.2) 0.66 kg / 1.46 pounds
662.0 g / 6.5 N
20 mm Stal (~0.2) 0.30 kg / 0.66 pounds
298.0 g / 2.9 N
30 mm Stal (~0.2) 0.07 kg / 0.16 pounds
72.0 g / 0.7 N
50 mm Stal (~0.2) 0.01 kg / 0.02 pounds
8.0 g / 0.1 N
The following data defines the theoretical holding capacity sufficient to start the sliding of the magnet downwards along a upright metal surface (assuming standard friction). This value is relative to the distance between the magnet and the surface.

Table 3: Wall mounting (shearing) - vertical pull
MW 33x30 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
10.75 kg / 23.70 pounds
10752.0 g / 105.5 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
7.17 kg / 15.80 pounds
7168.0 g / 70.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
3.58 kg / 7.90 pounds
3584.0 g / 35.2 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
17.92 kg / 39.51 pounds
17920.0 g / 175.8 N
When mounting a element on a upright wall (e.g., a board), it will maintain only about 1/5 of its maximum pull force. Gravitational force as well as a weak degree of grip cause that magnets move down faster than they pull off. Want to create a hanger? Note that the shear force is significantly lower than the maximum static pull force. On a smooth steel, the magnet will give way down under a much lighter cargo. Application of an anti-slip pad can effectively improve the result.

Table 4: Steel thickness (saturation) - power losses
MW 33x30 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
 1.79 kg / 3.95 pounds
1792.0 g / 17.6 N
1 mm
13%
 4.48 kg / 9.88 pounds
4480.0 g / 43.9 N
2 mm
25%
 8.96 kg / 19.75 pounds
8960.0 g / 87.9 N
3 mm
38%
 13.44 kg / 29.63 pounds
13440.0 g / 131.8 N
5 mm
63%
 22.40 kg / 49.38 pounds
22400.0 g / 219.7 N
10 mm
100%
 35.84 kg / 79.01 pounds
35840.0 g / 351.6 N
11 mm
100%
 35.84 kg / 79.01 pounds
35840.0 g / 351.6 N
12 mm
100%
 35.84 kg / 79.01 pounds
35840.0 g / 351.6 N
A thin sheet is unable to absorb the full magnetic flux, which weakens actual performance of the holder. If you attach a powerful product to a too thin substrate, the flux will penetrate right through and the attraction force will be weaker. To squeeze the maximum of this neodymium's power, you require a sufficiently solid backing of steel. The saturation phenomenon means that on sheet metal structures (e.g., thin profiles), the magnet works worse. We recommend selecting the steel thickness based on the following data.

Table 5: Working in heat (material behavior) - power drop
MW 33x30 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 35.84 kg / 79.01 pounds
35840.0 g / 351.6 N
 OK
40 °C -2.2% 35.05 kg / 77.28 pounds
35051.5 g / 343.9 N
 OK
60 °C -4.4% 34.26 kg / 75.54 pounds
34263.0 g / 336.1 N
 OK
80 °C -6.6% 33.47 kg / 73.80 pounds
33474.6 g / 328.4 N
100 °C -28.8% 25.52 kg / 56.26 pounds
25518.1 g / 250.3 N
Ordinary NdFeB products lose strength above the temperature limit. Protect against heat – high temperature can irreversibly damage this magnet. With increasing heat, the neodymium's force momentarily decreases. Do not use this magnet near heat sources exceeding its operating temperature limit. Ignoring the limit will cause destruction of magnetic properties.
*Engineering note: Thermal stability is determined by both grade, as well as the dimension ratios. Low-profile magnets (low permeance coefficient) risk losing magnetic properties sooner compared to rod magnets. The danger warning in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 33x30 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 155.43 kg / 342.66 pounds
5 974 Gs
23.31 kg / 51.40 pounds
23314 g / 228.7 N
 N/A
1 mm 146.19 kg / 322.29 pounds
10 531 Gs
21.93 kg / 48.34 pounds
21928 g / 215.1 N
 131.57 kg / 290.06 pounds
~0 Gs
2 mm 137.04 kg / 302.12 pounds
10 196 Gs
20.56 kg / 45.32 pounds
20556 g / 201.7 N
 123.34 kg / 271.91 pounds
~0 Gs
3 mm 128.20 kg / 282.64 pounds
9 862 Gs
19.23 kg / 42.40 pounds
19230 g / 188.6 N
 115.38 kg / 254.37 pounds
~0 Gs
5 mm 111.55 kg / 245.93 pounds
9 199 Gs
16.73 kg / 36.89 pounds
16733 g / 164.2 N
 100.40 kg / 221.34 pounds
~0 Gs
10 mm 76.54 kg / 168.75 pounds
7 620 Gs
11.48 kg / 25.31 pounds
11481 g / 112.6 N
 68.89 kg / 151.87 pounds
~0 Gs
20 mm 33.43 kg / 73.71 pounds
5 036 Gs
5.02 kg / 11.06 pounds
5015 g / 49.2 N
 30.09 kg / 66.34 pounds
~0 Gs
50 mm 3.08 kg / 6.78 pounds
1 528 Gs
0.46 kg / 1.02 pounds
462 g / 4.5 N
 2.77 kg / 6.11 pounds
~0 Gs
60 mm 1.57 kg / 3.46 pounds
1 091 Gs
0.24 kg / 0.52 pounds
235 g / 2.3 N
 1.41 kg / 3.11 pounds
~0 Gs
70 mm 0.85 kg / 1.87 pounds
803 Gs
0.13 kg / 0.28 pounds
127 g / 1.2 N
 0.76 kg / 1.69 pounds
~0 Gs
80 mm 0.48 kg / 1.07 pounds
606 Gs
0.07 kg / 0.16 pounds
73 g / 0.7 N
 0.44 kg / 0.96 pounds
~0 Gs
90 mm 0.29 kg / 0.64 pounds
468 Gs
0.04 kg / 0.10 pounds
43 g / 0.4 N
 0.26 kg / 0.57 pounds
~0 Gs
100 mm 0.18 kg / 0.40 pounds
369 Gs
0.03 kg / 0.06 pounds
27 g / 0.3 N
 0.16 kg / 0.36 pounds
~0 Gs
Two strong neodymiums interact from a significantly greater distance than a neodymium and metal setup. Such a system of magnet-to-magnet generates a stronger field and a larger range of performance. Planning to create a solid fastener? Utilize two neodymiums instead of one magnet and a steel. Remember that when attracting two neodymiums, the collision energy is huge. The repulsion force is slightly lower than the connection force, but still significant.
*Field value for N-N configuration drops to ~0 Gs at the geometric center between the magnets (due to field cancellation).
Attention: Results apply to sliding force of dual identical magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - precautionary measures
MW 33x30 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 20.5 cm
Hearing aid 10 Gs (1.0 mT) 16.0 cm
Mechanical watch 20 Gs (2.0 mT) 12.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 9.5 cm
Car key 50 Gs (5.0 mT) 9.0 cm
Payment card 400 Gs (40.0 mT) 4.0 cm
HDD hard drive 600 Gs (60.0 mT) 3.0 cm
Powerful magnet radiation is a real danger to IT equipment as well as pacemakers. These NdFeB products generate a field that disrupts operation of digital equipment. Be aware: the unseen radiation passes through tissues and housings. Increased vigilance must be taken by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - warning
MW 33x30 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 15.87 km/h
(4.41 m/s)
 1.87 J
30 mm 17.65 km/h
(4.90 m/s)
 2.31 J
50 mm 17.76 km/h
(4.93 m/s)
 2.34 J
100 mm 17.77 km/h
(4.94 m/s)
 2.35 J
Magnetic elements are very brittle – a violent impact against metal risks their cracking. Watch the impact speed – a magnet released freely becomes dangerous. Kinetic force can cause material chips or dangerous crushing to fingers. Always hold the magnet during mounting so it doesn't hit violently against the metal. A collision at high speed means shattering of the neodymium. Wear safety glasses when playing with large magnets.

Table 9: Coating parameters (durability)
MW 33x30 / 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MW 33x30 / N38

Parameter Value SI Unit / Description
Magnetic Flux 47 447 Mx 474.5 µWb
Pc Coefficient 0.85 High (Stable)
Flux value emitted by the pole surface. Essential parameter for generator designers and motors. Pc value determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 33x30 / N38

Environment Effective steel pull Effect
Air (land) 35.84 kg Standard
Water (riverbed) 41.04 kg
(+5.20 kg buoyancy gain)
+14.5%
Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
Contrary to myths, water does not block the magnetic field. However, remember the water resistance when pulling the rope quickly.

1. Shear force

*Warning: On a vertical wall, the magnet retains just ~20% of its nominal pull.

2. Steel saturation

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

3. Thermal stability

*For standard magnets, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.85

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%

Ecology and recycling (GPSR)

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: 010058-2026
Measurement Calculator

Force (pull)

Field Strength

Input a figure in just one slot to see the conversion in the other units at once.

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The offered product is an incredibly powerful cylinder magnet, composed of durable NdFeB material, which, with dimensions of Ø33x30 mm, guarantees the highest energy density. This specific item features high dimensional repeatability and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 35.84 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
This model is perfect for building electric motors, advanced sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the high power of 351.54 N with a weight of only 192.44 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.
Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering a great economic balance and operational stability. If you need even stronger magnets in the same volume (Ø33x30), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.
This model is characterized by dimensions Ø33x30 mm, which, at a weight of 192.44 g, makes it an element with high magnetic energy density. The key parameter here is the holding force amounting to approximately 35.84 kg (force ~351.54 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, 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 33 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.

Advantages and disadvantages of neodymium magnets.

Strengths

Besides their durability, neodymium magnets are valued for these benefits:
  • They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
  • They are extremely resistant to demagnetization induced by presence of other magnetic fields,
  • A magnet with a shiny silver surface has an effective appearance,
  • Magnets possess excellent magnetic induction on the outer layer,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of accurate shaping and adapting to defined applications,
  • Huge importance in innovative solutions – they are commonly used in computer drives, electromotive mechanisms, medical equipment, and multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which allows their use in compact constructions

Disadvantages

What to avoid - cons of neodymium magnets and proposals for their use:
  • At strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • We recommend a housing - magnetic mount, due to difficulties in realizing nuts inside the magnet and complex forms.
  • Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these magnets are able to be problematic in diagnostics 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

Lifting parameters

Best holding force of the magnet in ideal parameters – what affects it?

Breakaway force is the result of a measurement for ideal contact conditions, assuming:
  • using a plate made of mild steel, functioning as a magnetic yoke
  • possessing a thickness of at least 10 mm to ensure full flux closure
  • characterized by smoothness
  • with total lack of distance (no paint)
  • for force acting at a right angle (pull-off, not shear)
  • in stable room temperature

Determinants of practical lifting force of a magnet

During everyday use, the actual lifting capacity is determined by many variables, ranked from most significant:
  • Clearance – the presence of foreign body (paint, dirt, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
  • Direction of force – maximum parameter is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the surface is typically many times lower (approx. 1/5 of the lifting capacity).
  • Plate thickness – insufficiently thick plate does not accept the full field, causing part of the flux to be lost to the other side.
  • Chemical composition of the base – mild steel attracts best. Higher carbon content decrease magnetic properties and holding force.
  • Plate texture – smooth surfaces guarantee perfect abutment, which improves field saturation. Uneven metal reduce efficiency.
  • Thermal factor – hot environment reduces pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate decreases the holding force.

Precautions when working with NdFeB magnets
Sensitization to coating

Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If skin irritation occurs, cease handling magnets and use protective gear.

Operating temperature

Avoid heat. NdFeB magnets are susceptible to heat. If you need resistance above 80°C, look for special high-temperature series (H, SH, UH).

Warning for heart patients

Warning for patients: Powerful magnets disrupt medical devices. Keep minimum 30 cm distance or request help to handle the magnets.

Do not underestimate power

Before starting, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.

No play value

NdFeB magnets are not toys. Swallowing several magnets can lead to them attracting across intestines, which poses a severe health hazard and necessitates immediate surgery.

Electronic devices

Data protection: Strong magnets can ruin payment cards and sensitive devices (heart implants, hearing aids, mechanical watches).

Magnet fragility

Neodymium magnets are ceramic materials, which means they are fragile like glass. Clashing of two magnets will cause them shattering into shards.

Compass and GPS

Navigation devices and smartphones are highly sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.

Combustion hazard

Drilling and cutting of neodymium magnets carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Bone fractures

Large magnets can crush fingers instantly. Under no circumstances put your hand betwixt two strong magnets.

Security! Need more info? Check our post: Why are neodymium magnets dangerous?