Awaiting delivery Ships in 14 days CO2 GPSR PPWR REACH

MW 10x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010004

GTIN/EAN: 5906301810032

5.00
Load capacity 3.18 kg / 31.19 N Magnetic Induction 553.84 mT / 5538 Gs
Diameter Ø
10 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
5.89 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

technical specifications »

3.50 zł net / pcs

4.31 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?
Quantity
Net
Gross
price from 1 pcs
3.50 zł
4.31 zł
price from 200 pcs
3.29 zł
4.05 zł
price from 750 pcs
3.08 zł
3.79 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!

Technical details - MW 10x10 / N38 - cylindrical magnet

Specification / characteristics - MW 10x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010004
GTIN/EAN 5906301810032
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 10 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 5.89 g
Magnetization Direction ↑ axial
Load capacity ~ ? 3.18 kg / 31.19 N
Magnetic Induction ~ ? 553.84 mT / 5538 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x10 / 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 assembly - report

The following values constitute the result of a physical analysis. Values rely on models for the material Nd2Fe14B. Real-world parameters might slightly differ from theoretical values. Please consider these data as a preliminary roadmap when designing systems.

Table 1: Static force (pull vs distance) - characteristics
MW 10x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5534 Gs
553.4 mT
 3.18 kg / 7.01 lbs
3180.0 g / 31.2 N
 medium risk
1 mm 4428 Gs
442.8 mT
 2.04 kg / 4.49 lbs
2036.1 g / 20.0 N
 medium risk
2 mm 3420 Gs
342.0 mT
 1.21 kg / 2.68 lbs
1214.8 g / 11.9 N
 safe
3 mm 2597 Gs
259.7 mT
 0.70 kg / 1.54 lbs
700.2 g / 6.9 N
 safe
5 mm 1498 Gs
149.8 mT
 0.23 kg / 0.51 lbs
232.9 g / 2.3 N
 safe
10 mm 469 Gs
46.9 mT
 0.02 kg / 0.05 lbs
22.9 g / 0.2 N
 safe
15 mm 198 Gs
19.8 mT
 0.00 kg / 0.01 lbs
4.1 g / 0.0 N
 safe
20 mm 101 Gs
10.1 mT
 0.00 kg / 0.00 lbs
1.1 g / 0.0 N
 safe
30 mm 36 Gs
3.6 mT
 0.00 kg / 0.00 lbs
0.1 g / 0.0 N
 safe
50 mm 9 Gs
0.9 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 safe
Grip strength drops significantly with every subsequent millimeter of gap. Keep in mind that even a microscopic distance (e.g., dirt, varnish, veneer) significantly reduces the pull force. Magnets operate optimally in perfect adhesion; distance drastically cuts the force. Notice how rapidly the parameters fall, when the product does not touch tightly to the steel surface. When calculating the assembly, discard unnecessary gaps.

Table 2: Vertical capacity (vertical surface)
MW 10x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.64 kg / 1.40 lbs
636.0 g / 6.2 N
1 mm Stal (~0.2) 0.41 kg / 0.90 lbs
408.0 g / 4.0 N
2 mm Stal (~0.2) 0.24 kg / 0.53 lbs
242.0 g / 2.4 N
3 mm Stal (~0.2) 0.14 kg / 0.31 lbs
140.0 g / 1.4 N
5 mm Stal (~0.2) 0.05 kg / 0.10 lbs
46.0 g / 0.5 N
10 mm Stal (~0.2) 0.00 kg / 0.01 lbs
4.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
The following data shows the approximate force necessary to initiate the downward movement of the magnet down against a vertical steel plate (assuming typical friction coefficient). This value varies with the distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 10x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.95 kg / 2.10 lbs
954.0 g / 9.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.64 kg / 1.40 lbs
636.0 g / 6.2 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.32 kg / 0.70 lbs
318.0 g / 3.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.59 kg / 3.51 lbs
1590.0 g / 15.6 N
When placing a magnet on a vertical surface (e.g., a car body), it you can count on barely about 20%-30% of its nominal power. Gravitational force and a low friction coefficient mean that products slip faster than they pop off the substrate. Want to create a vertical fastening? Note that the sliding force is much weaker than the perpendicular breakaway force. On a painted metal, the element will slip down under a significantly smaller load. Utilizing a rubberized pad can significantly raise the stability.

Table 4: Material efficiency (substrate influence) - power losses
MW 10x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.32 kg / 0.70 lbs
318.0 g / 3.1 N
1 mm
25%
 0.80 kg / 1.75 lbs
795.0 g / 7.8 N
2 mm
50%
 1.59 kg / 3.51 lbs
1590.0 g / 15.6 N
3 mm
75%
 2.39 kg / 5.26 lbs
2385.0 g / 23.4 N
5 mm
100%
 3.18 kg / 7.01 lbs
3180.0 g / 31.2 N
10 mm
100%
 3.18 kg / 7.01 lbs
3180.0 g / 31.2 N
11 mm
100%
 3.18 kg / 7.01 lbs
3180.0 g / 31.2 N
12 mm
100%
 3.18 kg / 7.01 lbs
3180.0 g / 31.2 N
A too thin steel is not enough to absorb the entire magnetic field, which wastes potential of the holder. If you install a neodymium to a too thin substrate, the field will penetrate right through and the pull force will drop sharply. To achieve full efficiency of this neodymium's power, you need a suitably thick piece of metal. The material oversaturation causes that on sheet metal structures (e.g., thin profiles), the holder holds weaker. We suggest choosing the steel dimension from these parameters.

Table 5: Working in heat (material behavior) - thermal limit
MW 10x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 3.18 kg / 7.01 lbs
3180.0 g / 31.2 N
 OK
40 °C -2.2% 3.11 kg / 6.86 lbs
3110.0 g / 30.5 N
 OK
60 °C -4.4% 3.04 kg / 6.70 lbs
3040.1 g / 29.8 N
 OK
80 °C -6.6% 2.97 kg / 6.55 lbs
2970.1 g / 29.1 N
100 °C -28.8% 2.26 kg / 4.99 lbs
2264.2 g / 22.2 N
Classic neodymiums change their properties parameters above the temperature limit. Watch out for overheating – heat can permanently damage this product. With every degree above norm, the neodymium's power temporarily decreases. Avoid using this product near heat sources exceeding its safe range. Ignoring the limit will lead to irreversible degradation of magnetic properties.
*Important note: Temperature resistance is determined by both grade, as well as the dimension ratios. Thin magnets (pancake types) are more susceptible to demagnetization sooner than taller cylinders. The danger warning in the table points to permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 10x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 14.83 kg / 32.69 lbs
6 003 Gs
2.22 kg / 4.90 lbs
2224 g / 21.8 N
 N/A
1 mm 12.01 kg / 26.48 lbs
9 962 Gs
1.80 kg / 3.97 lbs
1802 g / 17.7 N
 10.81 kg / 23.83 lbs
~0 Gs
2 mm 9.50 kg / 20.93 lbs
8 857 Gs
1.42 kg / 3.14 lbs
1424 g / 14.0 N
 8.55 kg / 18.84 lbs
~0 Gs
3 mm 7.38 kg / 16.27 lbs
7 809 Gs
1.11 kg / 2.44 lbs
1107 g / 10.9 N
 6.64 kg / 14.64 lbs
~0 Gs
5 mm 4.31 kg / 9.50 lbs
5 968 Gs
0.65 kg / 1.43 lbs
647 g / 6.3 N
 3.88 kg / 8.55 lbs
~0 Gs
10 mm 1.09 kg / 2.39 lbs
2 996 Gs
0.16 kg / 0.36 lbs
163 g / 1.6 N
 0.98 kg / 2.16 lbs
~0 Gs
20 mm 0.11 kg / 0.24 lbs
939 Gs
0.02 kg / 0.04 lbs
16 g / 0.2 N
 0.10 kg / 0.21 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
116 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
60 mm 0.00 kg / 0.00 lbs
73 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
70 mm 0.00 kg / 0.00 lbs
49 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
80 mm 0.00 kg / 0.00 lbs
34 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
90 mm 0.00 kg / 0.00 lbs
25 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
100 mm 0.00 kg / 0.00 lbs
19 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two magnets attract each other from a wider radius than a magnet and steel setup. The connection of two magnets generates a stronger field and a wider radius of performance. Designing a strong closure? Utilize two neodymiums instead of one magnet and a steel. Exercise caution that when attracting two neodymiums, the impact force is huge. The repulsion force is a bit weaker than the attraction, but still large.
*Flux density in repulsion mode drops to ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
* Results apply to sliding force of a pair of identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (implants) - precautionary measures
MW 10x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 6.5 cm
Hearing aid 10 Gs (1.0 mT) 5.0 cm
Mechanical watch 20 Gs (2.0 mT) 4.0 cm
Mobile device 40 Gs (4.0 mT) 3.0 cm
Car key 50 Gs (5.0 mT) 3.0 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
A strong magnetic field poses a real danger to IT equipment as well as pacemakers. These magnets generate a flux that destroys function of digital equipment. Be aware: the invisible magnetic field acts through matter and glass. Exceptional care must be exercised by people with cochlear implants and insulin pumps. Influence will be felt by: mechanical watches, car keys, speakers, and screens. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - warning
MW 10x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 16.62 km/h
(4.62 m/s)
 0.06 J
30 mm 16.70 km/h
(4.64 m/s)
 0.06 J
50 mm 16.71 km/h
(4.64 m/s)
 0.06 J
100 mm 16.71 km/h
(4.64 m/s)
 0.06 J
Neodymium magnets are delicate – a violent impact against metal risks their cracking. Watch the impact speed – a magnet released freely becomes dangerous. Striking energy can destroy the magnet or dangerous crushing to fingers. Hold the magnet firmly during installation so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear safety glasses when working with large magnets.

Table 9: Surface protection spec
MW 10x10 / N38

Technical parameter Value / Description
Coating type [NiCuNi] Nickel
Layer structure Nickel - Copper - Nickel
Layer thickness 10-20 µm
Salt spray test (SST) ? 24 h
Recommended environment Indoors only (dry)
Neodymium magnets are highly susceptible to corrosion without proper protection. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MW 10x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 4 481 Mx 44.8 µWb
Pc Coefficient 0.89 High (Stable)
Total magnetic flux emitted by the pole surface. Essential parameter when building generators and motors. Pc value defines the magnet's operating point.

Table 11: Submerged application
MW 10x10 / N38

Environment Effective steel pull Effect
Air (land) 3.18 kg Standard
Water (riverbed) 3.64 kg
(+0.46 kg buoyancy gain)
+14.5%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Shear force

*Caution: On a vertical wall, the magnet holds merely a fraction of its nominal pull.

2. Steel thickness impact

*Thin metal sheet (e.g. computer case) drastically weakens the holding force.

3. Temperature resistance

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.89

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%

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: 010004-2026
Measurement Calculator

Pulling force

Field Strength

Simply complete any input, and the calculator fill in everything else instantly.

Other proposals

UMH 42x9x46 [M6] / N38 - magnetic holder with hook
Awaiting delivery Ships in 14 days

UMH 42x9x46 [M6] / N38 - magnetic holder with hook

35.99 zł brutto / pcs
MPL 25x25x10 / N38 - lamellar magnet
Awaiting delivery Ships in 14 days

MPL 25x25x10 / N38 - lamellar magnet

20.29 zł brutto / pcs
SM 25x325 [2xM8] / N42 - magnetic separator
Awaiting delivery Ships in 14 days

SM 25x325 [2xM8] / N42 - magnetic separator

1094.70 zł brutto / pcs
HH 16x5.3 [M3] / N38 - through hole magnetic holder
Awaiting delivery Ships in 14 days

HH 16x5.3 [M3] / N38 - through hole magnetic holder

3.32 zł brutto / pcs
This product is an extremely powerful rod magnet, composed of durable NdFeB material, which, with dimensions of Ø10x10 mm, guarantees optimal power. 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 significant force (approx. 3.18 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Additionally, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 31.19 N with a weight of only 5.89 g, this cylindrical magnet 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., 10.1 mm) using two-component epoxy glues. To ensure long-term durability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Magnets NdFeB grade N38 are suitable for 90% of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø10x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 10 mm and height 10 mm. The value of 31.19 N means that the magnet is capable of holding a weight many times exceeding its own mass of 5.89 g. The product has a [NiCuNi] coating, which protects the surface 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 10 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 through the diameter if your project requires it.

Advantages as well as disadvantages of neodymium magnets.

Pros

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
  • They do not lose their magnetic properties even under close interference source,
  • The use of an shiny coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • Neodymium magnets achieve maximum magnetic induction on a small area, which ensures high operational effectiveness,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling operation at temperatures reaching 230°C and above...
  • Due to the potential of precise shaping and customization to custom projects, magnetic components can be modeled in a wide range of geometric configurations, which increases their versatility,
  • Key role in advanced technology sectors – they find application in mass storage devices, electric drive systems, precision medical tools, as well as multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which allows their use in small systems

Disadvantages

Problematic aspects of neodymium magnets: tips and applications.
  • To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 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 resistant to moisture, when using outdoors
  • Due to limitations in realizing threads and complex shapes in magnets, we recommend using a housing - magnetic holder.
  • Potential hazard to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the context of child health protection. Furthermore, small elements of these products are able to be problematic in diagnostics medical when they are in the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Optimal lifting capacity of a neodymium magnet – what it depends on?

Magnet power was determined for the most favorable conditions, assuming:
  • with the use of a yoke made of low-carbon steel, ensuring full magnetic saturation
  • possessing a thickness of at least 10 mm to ensure full flux closure
  • characterized by smoothness
  • without the slightest clearance between the magnet and steel
  • for force acting at a right angle (in the magnet axis)
  • at standard ambient temperature

Practical lifting capacity: influencing factors

During everyday use, the actual lifting capacity results from a number of factors, listed from most significant:
  • Space between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
  • Steel thickness – insufficiently thick plate causes magnetic saturation, causing part of the flux to be escaped to the other side.
  • Material type – ideal substrate is pure iron steel. Cast iron may generate lower lifting capacity.
  • Surface quality – the more even the plate, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
  • Thermal environment – heating the magnet causes a temporary drop of force. Check the maximum operating temperature for a given model.

Lifting capacity testing was carried out on plates with a smooth surface 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 lowers the load capacity.

Precautions when working with NdFeB magnets
Nickel allergy

Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If an allergic reaction occurs, cease handling magnets and wear gloves.

Protect data

Device Safety: Neodymium magnets can ruin payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).

GPS Danger

Navigation devices and mobile phones are extremely susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Operating temperature

Regular neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. This process is irreversible.

Combustion hazard

Powder generated during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.

This is not a toy

Strictly store magnets away from children. Risk of swallowing is high, and the consequences of magnets clamping inside the body are tragic.

Eye protection

Neodymium magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets will cause them breaking into shards.

Life threat

Patients with a heart stimulator have to keep an large gap from magnets. The magnetism can stop the operation of the life-saving device.

Immense force

Handle with care. Neodymium magnets attract from a distance and connect with huge force, often faster than you can react.

Serious injuries

Pinching hazard: The pulling power is so immense that it can cause hematomas, pinching, and broken bones. Use thick gloves.

Attention! Learn more about hazards in the article: Safety of working with magnets.