← previous
next →
Product available Ships today (order by 14:00) CO2 GPSR PPWR REACH

MW 15x2 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010028

GTIN/EAN: 5906301810278

5.00
Load capacity 1.51 kg / 14.84 N Magnetic Induction 159.70 mT / 1597 Gs
Diameter Ø
15 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
2.65 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

technical specifications »

0.990 zł net / pcs

1.218 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?
Quantity
Net
Gross
price from 1 pcs
0.990 zł
1.218 zł
price from 700 pcs
0.931 zł
1.145 zł
price from 2600 pcs
0.871 zł
1.072 zł

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.

Order by 14:00 and we’ll ship today!

Product card - MW 15x2 / N38 - cylindrical magnet

Specification / characteristics - MW 15x2 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010028
GTIN/EAN 5906301810278
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 15 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 2.65 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.51 kg / 14.84 N
Magnetic Induction ~ ? 159.70 mT / 1597 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 15x2 / 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

Physical simulation of the assembly - data

These data are the direct effect of a physical calculation. Values were calculated on algorithms for the material Nd2Fe14B. Operational parameters may deviate from the simulation results. Use these calculations as a preliminary roadmap for designers.

Table 1: Static pull force (force vs distance) - interaction chart
MW 15x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1597 Gs
159.7 mT
 1.51 kg / 3.33 pounds
1510.0 g / 14.8 N
 weak grip
1 mm 1483 Gs
148.3 mT
 1.30 kg / 2.87 pounds
1303.0 g / 12.8 N
 weak grip
2 mm 1320 Gs
132.0 mT
 1.03 kg / 2.28 pounds
1032.2 g / 10.1 N
 weak grip
3 mm 1137 Gs
113.7 mT
 0.77 kg / 1.69 pounds
765.0 g / 7.5 N
 weak grip
5 mm 791 Gs
79.1 mT
 0.37 kg / 0.82 pounds
370.8 g / 3.6 N
 weak grip
10 mm 298 Gs
29.8 mT
 0.05 kg / 0.12 pounds
52.5 g / 0.5 N
 weak grip
15 mm 127 Gs
12.7 mT
 0.01 kg / 0.02 pounds
9.6 g / 0.1 N
 weak grip
20 mm 63 Gs
6.3 mT
 0.00 kg / 0.01 pounds
2.4 g / 0.0 N
 weak grip
30 mm 22 Gs
2.2 mT
 0.00 kg / 0.00 pounds
0.3 g / 0.0 N
 weak grip
50 mm 5 Gs
0.5 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 weak grip
Pulling power drops significantly per each millimeter of distance. Note that even the smallest gap (e.g., contamination, paint, dust) noticeably diminishes the holding power. Magnets work optimally in perfect adhesion; gap drastically cuts the power. Observe how flashily the pull force drop, when the product does not adhere tightly to the steel surface. When planning the arrangement, avoid additional spacers.

Table 2: Shear force (vertical surface)
MW 15x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.30 kg / 0.67 pounds
302.0 g / 3.0 N
1 mm Stal (~0.2) 0.26 kg / 0.57 pounds
260.0 g / 2.6 N
2 mm Stal (~0.2) 0.21 kg / 0.45 pounds
206.0 g / 2.0 N
3 mm Stal (~0.2) 0.15 kg / 0.34 pounds
154.0 g / 1.5 N
5 mm Stal (~0.2) 0.07 kg / 0.16 pounds
74.0 g / 0.7 N
10 mm Stal (~0.2) 0.01 kg / 0.02 pounds
10.0 g / 0.1 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 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 estimated holding capacity required to cause the slippage of the magnet down against a vertical steel plate (considering typical friction coefficient). This value varies with the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 15x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.45 kg / 1.00 pounds
453.0 g / 4.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.30 kg / 0.67 pounds
302.0 g / 3.0 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.15 kg / 0.33 pounds
151.0 g / 1.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.76 kg / 1.66 pounds
755.0 g / 7.4 N
When hanging a holder on a vertical plane (e.g., a car body), it will only hold only approx. 20%-30% of nominal attraction strength. Gravity as well as a low friction coefficient cause that magnets move down easier than they detach. Planning a vertical fastening? Consider that the shear force is significantly lower than the maximum static pull force. On a painted metal, the element will give way down under a significantly smaller load. Using a rubber pad can significantly improve the result.

Table 4: Steel thickness (substrate influence) - power losses
MW 15x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.15 kg / 0.33 pounds
151.0 g / 1.5 N
1 mm
25%
 0.38 kg / 0.83 pounds
377.5 g / 3.7 N
2 mm
50%
 0.76 kg / 1.66 pounds
755.0 g / 7.4 N
3 mm
75%
 1.13 kg / 2.50 pounds
1132.5 g / 11.1 N
5 mm
100%
 1.51 kg / 3.33 pounds
1510.0 g / 14.8 N
10 mm
100%
 1.51 kg / 3.33 pounds
1510.0 g / 14.8 N
11 mm
100%
 1.51 kg / 3.33 pounds
1510.0 g / 14.8 N
12 mm
100%
 1.51 kg / 3.33 pounds
1510.0 g / 14.8 N
A thin sheet is not enough to conduct the entire magnetic field, which weakens actual performance of the holder. Should you mount a strong magnet to a weak sheet, the magnetism will pass right through and the attraction force will be weaker. To utilize 100% of this neodymium's potential, you need a suitably thick piece of metal. The saturation phenomenon causes that on delicate walls (e.g., thin profiles), the product holds weaker. We recommend selecting the steel thickness according to the table below.

Table 5: Thermal stability (material behavior) - thermal limit
MW 15x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.51 kg / 3.33 pounds
1510.0 g / 14.8 N
 OK
40 °C -2.2% 1.48 kg / 3.26 pounds
1476.8 g / 14.5 N
 OK
60 °C -4.4% 1.44 kg / 3.18 pounds
1443.6 g / 14.2 N
80 °C -6.6% 1.41 kg / 3.11 pounds
1410.3 g / 13.8 N
100 °C -28.8% 1.08 kg / 2.37 pounds
1075.1 g / 10.5 N
Classic neodymiums irreversibly lose strength past the thermal threshold. Protect against heat – excessive heat can irreversibly damage this product. With every degree above norm, the magnet's capacity momentarily lowers. Do not use this product close to heaters exceeding its working range. Too high temperature will result in destruction of magnetic properties.
*Technical advisory: Thermal stability depends not only on the material grade, but also on the magnet's shape. Thin magnets (low Pc) may lose charge permanently under lower heat stress than long magnets. Red status in the table points to a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 15x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 2.78 kg / 6.12 pounds
2 915 Gs
0.42 kg / 0.92 pounds
417 g / 4.1 N
 N/A
1 mm 2.61 kg / 5.76 pounds
3 096 Gs
0.39 kg / 0.86 pounds
392 g / 3.8 N
 2.35 kg / 5.18 pounds
~0 Gs
2 mm 2.40 kg / 5.28 pounds
2 966 Gs
0.36 kg / 0.79 pounds
360 g / 3.5 N
 2.16 kg / 4.76 pounds
~0 Gs
3 mm 2.15 kg / 4.75 pounds
2 812 Gs
0.32 kg / 0.71 pounds
323 g / 3.2 N
 1.94 kg / 4.27 pounds
~0 Gs
5 mm 1.65 kg / 3.63 pounds
2 459 Gs
0.25 kg / 0.54 pounds
247 g / 2.4 N
 1.48 kg / 3.27 pounds
~0 Gs
10 mm 0.68 kg / 1.50 pounds
1 582 Gs
0.10 kg / 0.23 pounds
102 g / 1.0 N
 0.61 kg / 1.35 pounds
~0 Gs
20 mm 0.10 kg / 0.21 pounds
595 Gs
0.01 kg / 0.03 pounds
14 g / 0.1 N
 0.09 kg / 0.19 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
71 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
43 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
28 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
19 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
14 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
10 Gs
0.00 kg / 0.00 pounds
0 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 magnet and sheet combination. Such a system of two magnets produces a massive flux and a wider radius of performance. Designing a solid fastener? Utilize two neodymiums instead of a neodymium and a striker plate. Be careful that when connecting a pair of magnets, the collision energy is massive. The levitation is slightly lower than the attraction, but still impressive.
*The magnetic induction for N-N configuration drops to ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
Note: Estimates apply to friction force of dual same neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - warnings
MW 15x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.5 cm
Hearing aid 10 Gs (1.0 mT) 4.0 cm
Timepiece 20 Gs (2.0 mT) 3.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.5 cm
Remote 50 Gs (5.0 mT) 2.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
Extremely neodym field is a real danger to IT equipment as well as medical implants. These magnets produce a field that disrupts operation of sensitive medical devices. Remember: the invisible magnetic field penetrates the body and housings. Increased vigilance must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, remotes, membranes, and displays. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - warning
MW 15x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 22.74 km/h
(6.32 m/s)
 0.05 J
30 mm 23.07 km/h
(6.41 m/s)
 0.05 J
50 mm 23.08 km/h
(6.41 m/s)
 0.05 J
100 mm 23.08 km/h
(6.41 m/s)
 0.05 J
NdFeB products are delicate – a strong collision with metal risks their cracking. Watch the impact speed – a magnet released freely becomes dangerous. Striking energy can cause material chips or injury to fingers. Hold the magnet firmly during mounting so it doesn't hit with great force against the metal. A collision at high speed ends with a crack of the neodymium. Use safety goggles when working with large magnets.

Table 9: Surface protection spec
MW 15x2 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MW 15x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 541 Mx 35.4 µWb
Pc Coefficient 0.20 Low (Flat)
Total magnetic flux emitted by the pole surface. Essential parameter when building generators as well as sensors. Pc value defines the working geometry.

Table 11: Submerged application
MW 15x2 / N38

Environment Effective steel pull Effect
Air (land) 1.51 kg Standard
Water (riverbed) 1.73 kg
(+0.22 kg buoyancy gain)
+14.5%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.

1. Vertical hold

*Warning: On a vertical surface, the magnet holds only a fraction of its perpendicular strength.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) drastically 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) = 0.20

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 specification and ecology

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: 010028-2026
Measurement Calculator

Magnet pull force

Magnetic Field

Enter a number in any box, to see the rest will recalculate on the fly.

Other products

UMGZ 16x13x5 [M4] GZ / N38 - magnetic holder external thread
Product available Ships today (order by 14:00)

UMGZ 16x13x5 [M4] GZ / N38 - magnetic holder external thread

3.89 zł brutto / pcs
JM 15x40 - jajka w pudełku/cena za parę - magnetic eggs
Product available Ships today (order by 14:00)

JM 15x40 - jajka w pudełku/cena za parę - magnetic eggs

7.00 zł brutto / pcs
MPL 5x5x1.2 / N38 - lamellar magnet
Product available Ships today (order by 14:00)

MPL 5x5x1.2 / N38 - lamellar magnet

0.1845 zł brutto / pcs
ZM XMAG2 210 elementów - magnetic toy
Product available Ships today (order by 14:00)

ZM XMAG2 210 elementów - magnetic toy

86.10 zł brutto / pcs
This product is an exceptionally strong cylindrical magnet, produced from durable NdFeB material, which, with dimensions of Ø15x2 mm, guarantees the highest energy density. The MW 15x2 / N38 component features an accuracy of ±0.1mm and industrial build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with significant force (approx. 1.51 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 14.84 N with a weight of only 2.65 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.
Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure stability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Magnets NdFeB grade N38 are suitable for the majority of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø15x2), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 15 mm and height 2 mm. The key parameter here is the lifting capacity amounting to approximately 1.51 kg (force ~14.84 N), which, with such defined 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.
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 15 mm. 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 Nd2Fe14B magnets.

Benefits

Apart from their notable power, neodymium magnets have these key benefits:
  • They have unchanged lifting capacity, and over nearly ten years their attraction force decreases symbolically – ~1% (according to theory),
  • They have excellent resistance to magnetic field loss as a result of external magnetic sources,
  • By covering with a reflective coating of silver, the element has an modern look,
  • Magnets are distinguished by maximum magnetic induction on the active area,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the form) even at a temperature of 230°C or more...
  • Considering the ability of flexible molding and adaptation to custom solutions, NdFeB magnets can be produced in a wide range of shapes and sizes, which makes them more universal,
  • Versatile presence in electronics industry – they are used in hard drives, motor assemblies, advanced medical instruments, and technologically advanced constructions.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Cons of neodymium magnets: tips and applications.
  • At strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • Due to limitations in producing threads and complicated shapes in magnets, we propose using casing - magnetic mechanism.
  • Possible danger related to microscopic parts of magnets are risky, when accidentally swallowed, which is particularly important in the context of child health protection. Additionally, small elements of these magnets can complicate diagnosis medical when they are in the body.
  • With large orders the cost of neodymium magnets can be a barrier,

Lifting parameters

Highest magnetic holding force – what contributes to it?

The lifting capacity listed is a measurement result conducted under standard conditions:
  • with the application of a sheet made of low-carbon steel, ensuring maximum field concentration
  • whose transverse dimension equals approx. 10 mm
  • with a surface free of scratches
  • under conditions of no distance (surface-to-surface)
  • for force acting at a right angle (pull-off, not shear)
  • at temperature approx. 20 degrees Celsius

Lifting capacity in practice – influencing factors

It is worth knowing that the working load will differ influenced by the following factors, in order of importance:
  • Distance – existence of any layer (paint, tape, gap) 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 significantly lower power (often approx. 20-30% of nominal force).
  • Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Steel grade – ideal substrate is pure iron steel. Hardened steels may have worse magnetic properties.
  • Surface quality – the more even the surface, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Temperature influence – hot environment weakens magnetic field. Too high temperature can permanently damage the magnet.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the holding force is lower. In addition, even a small distance between the magnet and the plate reduces the lifting capacity.

Safe handling of neodymium magnets
Finger safety

Mind your fingers. Two large magnets will join immediately with a force of massive weight, destroying everything in their path. Be careful!

GPS Danger

A strong magnetic field negatively affects the functioning of magnetometers in smartphones and navigation systems. Keep magnets close to a smartphone to avoid damaging the sensors.

Machining danger

Dust generated during machining of magnets is flammable. Do not drill into magnets unless you are an expert.

Protective goggles

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Collision of two magnets leads to them breaking into small pieces.

Safe distance

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

Danger to the youngest

Adult use only. Small elements can be swallowed, causing intestinal necrosis. Store out of reach of kids and pets.

Powerful field

Use magnets consciously. Their huge power can surprise even professionals. Be vigilant and do not underestimate their force.

Operating temperature

Regular neodymium magnets (grade N) lose magnetization when the temperature exceeds 80°C. This process is irreversible.

Allergic reactions

Certain individuals suffer from a sensitization to nickel, which is the typical protective layer for NdFeB magnets. Extended handling might lead to skin redness. We suggest wear protective gloves.

Health Danger

Health Alert: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.

Caution! More info about risks in the article: Safety of working with magnets.