Product available Ships tomorrow

MW 8x20 / N38 - cylindrical magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: PLN 1-6500
Rating: 5

cylindrical magnet

Catalog no 010475

GTIN/EAN: 5906301811138

5.00

Diameter Ø

8 mm [±0,1 mm]

Height

20 mm [±0,1 mm]

Weight

7.54 g

Magnetization Direction

→ diametrical

Load capacity

1.30 kg / 12.71 N

Magnetic Induction

607.01 mT / 6070 Gs

Coating

[NiCuNi] Nickel

product parameters »

4.60 ZŁ with VAT / pcs + price for transport

3.74 ZŁ net + 23% VAT / pcs

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Technical - MW 8x20 / N38 - cylindrical magnet

Specification / characteristics - MW 8x20 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010475
GTIN/EAN	5906301811138
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	8 mm [±0,1 mm]
Height	20 mm [±0,1 mm]
Weight	7.54 g
Magnetization Direction	→ diametrical
Load capacity ~ ?	1.30 kg / 12.71 N
Magnetic Induction ~ ?	607.01 mT / 6070 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 8x20 / 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

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	312 - 380	°C
Curie Temperature TF	593 - 716	°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

Presented information constitute the outcome of a physical analysis. Values rely on models for the class Nd₂Fe₁₄B. Actual performance might slightly differ from theoretical values. Please consider these data as a reference point when designing systems.

Table 1: Static force (force vs distance) - characteristics
MW 8x20 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	6064 Gs 606.4 mT	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N	weak grip
1 mm	4587 Gs 458.7 mT	0.74 kg / 1.64 LBS 743.7 g / 7.3 N	weak grip
2 mm	3327 Gs 332.7 mT	0.39 kg / 0.86 LBS 391.4 g / 3.8 N	weak grip
3 mm	2388 Gs 238.8 mT	0.20 kg / 0.44 LBS 201.6 g / 2.0 N	weak grip
5 mm	1281 Gs 128.1 mT	0.06 kg / 0.13 LBS 58.0 g / 0.6 N	weak grip
10 mm	389 Gs 38.9 mT	0.01 kg / 0.01 LBS 5.4 g / 0.1 N	weak grip
15 mm	169 Gs 16.9 mT	0.00 kg / 0.00 LBS 1.0 g / 0.0 N	weak grip
20 mm	90 Gs 9.0 mT	0.00 kg / 0.00 LBS 0.3 g / 0.0 N	weak grip
30 mm	35 Gs 3.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip
50 mm	10 Gs 1.0 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip

Magnetic force weakens sharply with every mm of gap. Note that even a microscopic distance (e.g., contamination, paint, rust) noticeably weakens the grip. Magnets work strongest at the point of direct contact; gap weakens the force. See how quickly the parameters fall, when the magnet does not touch tightly to the steel surface. When designing the assembly, discard additional spacers.

Table 2: Slippage capacity (vertical surface)
MW 8x20 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.26 kg / 0.57 LBS 260.0 g / 2.6 N
1 mm	Stal (~0.2)	0.15 kg / 0.33 LBS 148.0 g / 1.5 N
2 mm	Stal (~0.2)	0.08 kg / 0.17 LBS 78.0 g / 0.8 N
3 mm	Stal (~0.2)	0.04 kg / 0.09 LBS 40.0 g / 0.4 N
5 mm	Stal (~0.2)	0.01 kg / 0.03 LBS 12.0 g / 0.1 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 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 table below indicates the approximate holding capacity sufficient to initiate the slippage of the magnet downwards against a vertical steel wall (considering standard friction coefficient). This parameter is relative to the gap size between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 8x20 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.39 kg / 0.86 LBS 390.0 g / 3.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.26 kg / 0.57 LBS 260.0 g / 2.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.13 kg / 0.29 LBS 130.0 g / 1.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.65 kg / 1.43 LBS 650.0 g / 6.4 N

When hanging a holder on a vertical wall (e.g., a board), it will maintain just about 20%-30% of its nominal power. Gravity and a weak degree of grip mean that holders slip easier than they pop off the substrate. Planning a hanger? Consider that the sliding force is much weaker than the maximum static pull force. On a slippery surface, the holder will slide down under a much lighter weight. Application of an anti-slip layer can drastically raise the stability.

Table 4: Material efficiency (substrate influence) - power losses
MW 8x20 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.13 kg / 0.29 LBS 130.0 g / 1.3 N
1 mm	25%	0.33 kg / 0.72 LBS 325.0 g / 3.2 N
2 mm	50%	0.65 kg / 1.43 LBS 650.0 g / 6.4 N
3 mm	75%	0.98 kg / 2.15 LBS 975.0 g / 9.6 N
5 mm	100%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N
10 mm	100%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N
11 mm	100%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N
12 mm	100%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N

A thin metal plate is incapable of take in the full magnetic flux, which squanders power of the holder. If you mount a strong magnet to a weak sheet, the flux will penetrate right through and the holding will be smaller. To squeeze the maximum of this neodymium's power, you need a suitably thick element of metal. The saturation phenomenon means that on thin elements (e.g., thin profiles), the product shows lower pull force. We advise picking the steel dimension from these parameters.

Table 5: Working in heat (material behavior) - thermal limit
MW 8x20 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N	OK
40 °C	-2.2%	1.27 kg / 2.80 LBS 1271.4 g / 12.5 N	OK
60 °C	-4.4%	1.24 kg / 2.74 LBS 1242.8 g / 12.2 N	OK
80 °C	-6.6%	1.21 kg / 2.68 LBS 1214.2 g / 11.9 N
100 °C	-28.8%	0.93 kg / 2.04 LBS 925.6 g / 9.1 N

Classic neodymiums irreversibly lose power after exceeding the maximum temperature. Watch out for overheating – excessive heat can permanently demagnetize this product. As the temperature rises, the magnet's force briefly decreases. Refrain from using this magnet near heat sources exceeding its safe range. Too high temperature will lead to irreversible degradation of magnetic properties.

*Important note: Heat tolerance is determined by both grade, but also on the magnet's shape. Thin magnets (pancake types) are more susceptible to demagnetization sooner than taller cylinders. Warning indicator in the table indicates a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 8x20 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	11.40 kg / 25.12 LBS 6 154 Gs	1.71 kg / 3.77 LBS 1709 g / 16.8 N	N/A
1 mm	8.76 kg / 19.31 LBS 10 632 Gs	1.31 kg / 2.90 LBS 1314 g / 12.9 N	7.88 kg / 17.38 LBS ~0 Gs
2 mm	6.52 kg / 14.37 LBS 9 174 Gs	0.98 kg / 2.16 LBS 978 g / 9.6 N	5.87 kg / 12.94 LBS ~0 Gs
3 mm	4.76 kg / 10.49 LBS 7 837 Gs	0.71 kg / 1.57 LBS 714 g / 7.0 N	4.28 kg / 9.44 LBS ~0 Gs
5 mm	2.46 kg / 5.43 LBS 5 637 Gs	0.37 kg / 0.81 LBS 369 g / 3.6 N	2.22 kg / 4.88 LBS ~0 Gs
10 mm	0.51 kg / 1.12 LBS 2 561 Gs	0.08 kg / 0.17 LBS 76 g / 0.7 N	0.46 kg / 1.01 LBS ~0 Gs
20 mm	0.05 kg / 0.10 LBS 778 Gs	0.01 kg / 0.02 LBS 7 g / 0.1 N	0.04 kg / 0.09 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 107 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 69 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 48 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 magnetic products attract each other from a much further distance than a magnet and sheet combination. The setup of magnet-to-magnet creates a more powerful interaction and a larger range of performance. Designing a powerful holder? Utilize two neodymiums instead of one magnet 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 significant.
*The magnetic induction in repulsion mode drops to ~0 Gs in the exact middle between the magnets (due to field cancellation).
Attention: Estimates demonstrate sliding force of two same magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (electronics) - warnings
MW 8x20 / 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
Timepiece	20 Gs (2.0 mT)	4.0 cm
Mobile device	40 Gs (4.0 mT)	3.0 cm
Remote	50 Gs (5.0 mT)	3.0 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

A strong magnetic field is a large risk to electronic devices as well as pacemakers. These neodymiums generate a flux that destroys function of digital equipment. Remember: the unseen radiation acts through matter and glass. Exceptional care must be exercised by people with hearing aids and drug dispensers. Also at risk are: automatic timepieces, remotes, speakers, and screens. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - collision effects
MW 8x20 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	13.28 km/h (3.69 m/s)	0.05 J
30 mm	22.94 km/h (6.37 m/s)	0.15 J
50 mm	29.61 km/h (8.23 m/s)	0.26 J
100 mm	41.88 km/h (11.63 m/s)	0.51 J

NdFeB products are delicate – a violent impact against metal risks their cracking. Pay attention to connection velocity – a magnet released freely turns into a projectile. Kinetic force can cause material chips or painful pinches to skin. Hold the magnet firmly during mounting so it doesn't hit violently against the steel surface. A collision at high speed almost guarantees destruction of the neodymium. Wear safety glasses when working with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 8x20 / 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. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MW 8x20 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	3 457 Mx	34.6 µWb
P_c Coefficient	1.31	High (Stable)

Flux value emitted by the pole surface. Essential parameter when building generators as well as sensors. The P_c coefficient defines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 8x20 / N38

Environment	Effective steel pull	Effect
Air (land)	1.30 kg	Standard
Water (riverbed)	1.49 kg (+0.19 kg buoyancy gain)	+14.5%

Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

*Note: On a vertical surface, the magnet holds only a fraction of its nominal pull.

2. Steel saturation

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

3. Temperature resistance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.31

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 P_c (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 P_c 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

Material specification

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: 010475-2026

Magnet Unit Converter

Magnet pull force

Force in kg

Force in lbs

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Induction (Gs)

Just fill in any input, and the converter fill in the rest automatically.

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MW 40x15 / N38 - cylindrical magnet

65.93 ZŁ brutto / pcs

The offered product is an extremely powerful rod magnet, composed of durable NdFeB material, which, at dimensions of Ø8x20 mm, guarantees optimal power. This specific item is characterized by an accuracy of ±0.1mm and professional build quality, making it an excellent solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 1.30 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Moreover, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

This model is ideal for building electric motors, advanced Hall effect sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the high power of 12.71 N with a weight of only 7.54 g, this rod is indispensable in miniature devices and wherever low weight is crucial.

Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 8.1 mm) using two-component epoxy glues. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Magnets NdFeB grade N38 are strong enough for the majority of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø8x20), 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 Ø8x20 mm, which, at a weight of 7.54 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 1.30 kg (force ~12.71 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 20 mm), which means that the N and S poles are located on the flat, circular surfaces. 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.

Pros as well as cons of Nd₂Fe₁₄B magnets.

Advantages

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),
Magnets effectively protect themselves against demagnetization caused by foreign field sources,
A magnet with a metallic silver surface looks better,
The surface of neodymium magnets generates a strong magnetic field – this is a key feature,
Neodymium magnets are characterized by extremely 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...
Thanks to modularity in forming and the ability to modify to unusual requirements,
Huge importance in future technologies – they find application in mass storage devices, brushless drives, precision medical tools, and other advanced devices.
Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Limitations

What to avoid - cons of neodymium magnets: tips and applications.

To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
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 complicated shapes in magnets, we recommend using a housing - magnetic holder.
Health risk resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small elements of these devices can be problematic in diagnostics medical in case of swallowing.
With large orders the cost of neodymium magnets can be a barrier,

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what affects it?

Magnet power is the result of a measurement for ideal contact conditions, assuming:

on a base made of mild steel, effectively closing the magnetic flux
with a thickness no less than 10 mm
with an ground contact surface
with direct contact (without impurities)
under perpendicular force direction (90-degree angle)
in neutral thermal conditions

Impact of factors on magnetic holding capacity in practice

Effective lifting capacity is influenced by working environment parameters, mainly (from priority):

Gap between surfaces – every millimeter of distance (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
Steel grade – ideal substrate is pure iron steel. Hardened steels may have worse magnetic properties.
Surface finish – ideal contact is possible only on smooth steel. Rough texture reduce the real contact area, reducing force.
Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the maximum operating temperature for a given model.

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under parallel forces the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate decreases the load capacity.

Safe handling of neodymium magnets

Keep away from electronics

A strong magnetic field disrupts the functioning of magnetometers in smartphones and GPS navigation. Do not bring magnets near a smartphone to prevent breaking the sensors.

Sensitization to coating

Nickel alert: The nickel-copper-nickel coating contains nickel. If redness occurs, immediately stop handling magnets and use protective gear.

Choking Hazard

NdFeB magnets are not suitable for play. Accidental ingestion of multiple magnets may result in them connecting inside the digestive tract, which poses a severe health hazard and necessitates urgent medical intervention.

Electronic hazard

Intense magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Stay away of min. 10 cm.

Do not drill into magnets

Machining of NdFeB material carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Crushing risk

Big blocks can crush fingers in a fraction of a second. Never put your hand betwixt two strong magnets.

Medical implants

Individuals with a pacemaker must keep an large gap from magnets. The magnetism can disrupt the functioning of the life-saving device.

Safe operation

Exercise caution. Neodymium magnets attract from a distance and connect with massive power, often faster than you can react.

Do not overheat magnets

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

Shattering risk

Watch out for shards. Magnets can explode upon uncontrolled impact, launching shards into the air. Eye protection is mandatory.

Attention! Need more info? Check our post: Are neodymium magnets dangerous?

MW 8x20 / N38 - cylindrical magnet

Technical - MW 8x20 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering simulation of the assembly - report

Table 1: Static force (force vs distance) - characteristics MW 8x20 / N38

Table 2: Slippage capacity (vertical surface) MW 8x20 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MW 8x20 / N38

Table 4: Material efficiency (substrate influence) - power losses MW 8x20 / N38

Table 5: Working in heat (material behavior) - thermal limit MW 8x20 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MW 8x20 / N38

Table 7: Safety (HSE) (electronics) - warnings MW 8x20 / N38

Table 8: Impact energy (kinetic energy) - collision effects MW 8x20 / N38

Table 9: Anti-corrosion coating durability MW 8x20 / N38

Table 10: Construction data (Flux) MW 8x20 / N38

Table 11: Hydrostatics and buoyancy MW 8x20 / N38

1. Shear force

2. Steel saturation

3. Temperature resistance

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

Material specification

Environmental data

Magnet pull force

Field Strength

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MW 40x15 / N38 - cylindrical magnet

Pros as well as cons of Nd2Fe14B magnets.

Advantages

Limitations

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what affects it?

Impact of factors on magnetic holding capacity in practice

Safe handling of neodymium magnets

Keep away from electronics

Sensitization to coating

Choking Hazard

Electronic hazard

Do not drill into magnets

Crushing risk

Medical implants

Safe operation

Do not overheat magnets

Shattering risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - characteristics
MW 8x20 / N38

Table 2: Slippage capacity (vertical surface)
MW 8x20 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 8x20 / N38

Table 4: Material efficiency (substrate influence) - power losses
MW 8x20 / N38

Table 5: Working in heat (material behavior) - thermal limit
MW 8x20 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 8x20 / N38

Table 7: Safety (HSE) (electronics) - warnings
MW 8x20 / N38

Table 8: Impact energy (kinetic energy) - collision effects
MW 8x20 / N38

Table 9: Anti-corrosion coating durability
MW 8x20 / N38

Table 10: Construction data (Flux)
MW 8x20 / N38

Table 11: Hydrostatics and buoyancy
MW 8x20 / N38

Pros as well as cons of Nd₂Fe₁₄B magnets.