Product available Ships tomorrow

MW 20x18 / N38 - cylindrical magnet

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

cylindrical magnet

Catalog no 010040

GTIN/EAN: 5906301810391

Diameter Ø

20 mm [±0,1 mm]

Height

18 mm [±0,1 mm]

Weight

42.41 g

Magnetization Direction

↑ axial

Load capacity

13.19 kg / 129.35 N

Magnetic Induction

541.64 mT / 5416 Gs

Coating

[NiCuNi] Nickel

check specifications »

23.54 ZŁ with VAT / pcs + price for transport

19.14 ZŁ net + 23% VAT / pcs

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Technical - MW 20x18 / N38 - cylindrical magnet

Specification / characteristics - MW 20x18 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010040
GTIN/EAN	5906301810391
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	20 mm [±0,1 mm]
Height	18 mm [±0,1 mm]
Weight	42.41 g
Magnetization Direction	↑ axial
Load capacity ~ ?	13.19 kg / 129.35 N
Magnetic Induction ~ ?	541.64 mT / 5416 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 20x18 / 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

Technical modeling of the assembly - data

The following values constitute the result of a engineering analysis. Results were calculated on algorithms for the class Nd₂Fe₁₄B. Actual parameters might slightly differ from theoretical values. Use these calculations as a reference point during assembly planning.

Table 1: Static force (pull vs distance) - interaction chart
MW 20x18 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5414 Gs 541.4 mT	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N	crushing
1 mm	4870 Gs 487.0 mT	10.67 kg / 23.52 LBS 10669.5 g / 104.7 N	crushing
2 mm	4330 Gs 433.0 mT	8.43 kg / 18.59 LBS 8434.2 g / 82.7 N	strong
3 mm	3816 Gs 381.6 mT	6.55 kg / 14.45 LBS 6552.7 g / 64.3 N	strong
5 mm	2913 Gs 291.3 mT	3.82 kg / 8.42 LBS 3818.4 g / 37.5 N	strong
10 mm	1455 Gs 145.5 mT	0.95 kg / 2.10 LBS 952.2 g / 9.3 N	weak grip
15 mm	775 Gs 77.5 mT	0.27 kg / 0.60 LBS 270.1 g / 2.7 N	weak grip
20 mm	450 Gs 45.0 mT	0.09 kg / 0.20 LBS 91.3 g / 0.9 N	weak grip
30 mm	188 Gs 18.8 mT	0.02 kg / 0.04 LBS 15.9 g / 0.2 N	weak grip
50 mm	54 Gs 5.4 mT	0.00 kg / 0.00 LBS 1.3 g / 0.0 N	weak grip

Magnetic force decreases significantly with every mm of distance. Note that every additional insulation layer (e.g., contamination, varnish, veneer) significantly weakens the grip. Neodymiums operate most effectively in perfect adhesion; distance kills the power. Observe how quickly the parameters fall, when the product does not adhere flatly to the metal substrate. When planning the assembly, eliminate redundant distances.

Table 2: Slippage force (wall)
MW 20x18 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.64 kg / 5.82 LBS 2638.0 g / 25.9 N
1 mm	Stal (~0.2)	2.13 kg / 4.70 LBS 2134.0 g / 20.9 N
2 mm	Stal (~0.2)	1.69 kg / 3.72 LBS 1686.0 g / 16.5 N
3 mm	Stal (~0.2)	1.31 kg / 2.89 LBS 1310.0 g / 12.9 N
5 mm	Stal (~0.2)	0.76 kg / 1.68 LBS 764.0 g / 7.5 N
10 mm	Stal (~0.2)	0.19 kg / 0.42 LBS 190.0 g / 1.9 N
15 mm	Stal (~0.2)	0.05 kg / 0.12 LBS 54.0 g / 0.5 N
20 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 18.0 g / 0.2 N
30 mm	Stal (~0.2)	0.00 kg / 0.01 LBS 4.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

The following data indicates the theoretical holding capacity necessary to initiate the sliding of the magnet down along a vertical metal surface (assuming typical friction coefficient). This parameter depends on the distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 20x18 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	3.96 kg / 8.72 LBS 3957.0 g / 38.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.64 kg / 5.82 LBS 2638.0 g / 25.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.32 kg / 2.91 LBS 1319.0 g / 12.9 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	6.60 kg / 14.54 LBS 6595.0 g / 64.7 N

When placing a magnet on a upright plane (e.g., a board), it will only hold only approx. 20%-30% of its nominal power. Gravitational force and a low friction coefficient cause that magnets slide down faster than they pop off the substrate. Planning a vertical fastening? Consider that the sliding force is much weaker than the maximum static pull force. On a smooth steel, the magnet will slip down under a significantly smaller weight. Utilizing a rubberized layer can effectively improve the result.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 20x18 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.66 kg / 1.45 LBS 659.5 g / 6.5 N
1 mm	13%	1.65 kg / 3.63 LBS 1648.8 g / 16.2 N
2 mm	25%	3.30 kg / 7.27 LBS 3297.5 g / 32.3 N
3 mm	38%	4.95 kg / 10.90 LBS 4946.3 g / 48.5 N
5 mm	63%	8.24 kg / 18.17 LBS 8243.8 g / 80.9 N
10 mm	100%	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N
11 mm	100%	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N
12 mm	100%	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N

A thin sheet is incapable of absorb the entire magnetic field, which squanders power of the magnet. Should you install a neodymium to a too thin substrate, the flux will pass right through and the attraction force will be weaker. To achieve the maximum of this neodymium's power, you need a suitably thick backing of steel. The saturation effect means that on delicate walls (e.g., car bodies), the magnet holds weaker. We suggest choosing the steel thickness according to the table below.

Table 5: Thermal stability (stability) - resistance threshold
MW 20x18 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N	OK
40 °C	-2.2%	12.90 kg / 28.44 LBS 12899.8 g / 126.5 N	OK
60 °C	-4.4%	12.61 kg / 27.80 LBS 12609.6 g / 123.7 N	OK
80 °C	-6.6%	12.32 kg / 27.16 LBS 12319.5 g / 120.9 N
100 °C	-28.8%	9.39 kg / 20.70 LBS 9391.3 g / 92.1 N

Ordinary NdFeB products irreversibly lose power past the thermal threshold. Protect against heat – excessive heat can irreversibly damage this magnet. With increasing heat, the magnet's power temporarily drops. Refrain from using this magnet near heat sources exceeding its operating temperature limit. Exceeding the critical threshold will lead to permanent loss of magnetic properties.

*Technical advisory: Heat tolerance is determined by both grade, as well as the dimension ratios. Low-profile magnets (pancake types) risk losing magnetic properties sooner than long magnets. Warning indicator in the table points to permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 20x18 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	56.78 kg / 125.17 LBS 5 968 Gs	8.52 kg / 18.78 LBS 8516 g / 83.5 N	N/A
1 mm	51.26 kg / 113.01 LBS 10 289 Gs	7.69 kg / 16.95 LBS 7689 g / 75.4 N	46.13 kg / 101.71 LBS ~0 Gs
2 mm	45.93 kg / 101.25 LBS 9 739 Gs	6.89 kg / 15.19 LBS 6889 g / 67.6 N	41.33 kg / 91.13 LBS ~0 Gs
3 mm	40.93 kg / 90.24 LBS 9 194 Gs	6.14 kg / 13.54 LBS 6140 g / 60.2 N	36.84 kg / 81.22 LBS ~0 Gs
5 mm	32.06 kg / 70.68 LBS 8 137 Gs	4.81 kg / 10.60 LBS 4809 g / 47.2 N	28.86 kg / 63.62 LBS ~0 Gs
10 mm	16.44 kg / 36.24 LBS 5 826 Gs	2.47 kg / 5.44 LBS 2465 g / 24.2 N	14.79 kg / 32.61 LBS ~0 Gs
20 mm	4.10 kg / 9.04 LBS 2 909 Gs	0.61 kg / 1.36 LBS 615 g / 6.0 N	3.69 kg / 8.13 LBS ~0 Gs
50 mm	0.15 kg / 0.34 LBS 565 Gs	0.02 kg / 0.05 LBS 23 g / 0.2 N	0.14 kg / 0.31 LBS ~0 Gs
60 mm	0.07 kg / 0.15 LBS 376 Gs	0.01 kg / 0.02 LBS 10 g / 0.1 N	0.06 kg / 0.14 LBS ~0 Gs
70 mm	0.03 kg / 0.07 LBS 262 Gs	0.00 kg / 0.01 LBS 5 g / 0.0 N	0.03 kg / 0.07 LBS ~0 Gs
80 mm	0.02 kg / 0.04 LBS 190 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.03 LBS ~0 Gs
90 mm	0.01 kg / 0.02 LBS 142 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
100 mm	0.01 kg / 0.01 LBS 109 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two strong neodymiums attract each other from a significantly greater distance than a magnet and steel combination. The setup of magnet-to-magnet produces a massive flux and a further horizon of action. Planning to create a strong closure? Apply two magnets instead of one magnet and a steel. Remember that when connecting a pair of magnets, the impact force is extreme. The repulsion force is slightly lower than the attraction, but still large.
*Flux density in repulsion mode is approximately ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
Attention: Figures refer to friction force of two matching neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (implants) - precautionary measures
MW 20x18 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	12.5 cm
Hearing aid	10 Gs (1.0 mT)	9.5 cm
Mechanical watch	20 Gs (2.0 mT)	7.5 cm
Mobile device	40 Gs (4.0 mT)	6.0 cm
Remote	50 Gs (5.0 mT)	5.5 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

Powerful magnet radiation is a real danger to electronics and medical implants. These magnets produce a field that destroys function of digital equipment. Notice: the invisible magnetic field acts through matter and glass. Exceptional care must be exercised by people with cochlear implants and insulin pumps. The risk also applies to: automatic timepieces, car keys, speakers, and displays. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - collision effects
MW 20x18 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	18.57 km/h (5.16 m/s)	0.56 J
30 mm	30.83 km/h (8.56 m/s)	1.56 J
50 mm	39.77 km/h (11.05 m/s)	2.59 J
100 mm	56.24 km/h (15.62 m/s)	5.18 J

Magnetic elements are very brittle – a strong collision with metal can result in shattering. Control the attraction moment – a neodymium left loose turns into a projectile. Striking energy can cause material chips or dangerous crushing to fingers. Hold the magnet firmly during bringing near metal so it doesn't hit violently against the steel surface. A collision at high speed almost guarantees destruction of the neodymium. Use safety goggles when handling with powerful specimens.

Table 9: Coating parameters (durability)
MW 20x18 / 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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (P_c)
MW 20x18 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	17 374 Mx	173.7 µWb
P_c Coefficient	0.85	High (Stable)

Flux value passing through the magnet pole. Key data when building generators and motors. The P_c coefficient determines the working geometry.

Table 11: Underwater work (magnet fishing)
MW 20x18 / N38

Environment	Effective steel pull	Effect
Air (land)	13.19 kg	Standard
Water (riverbed)	15.10 kg (+1.91 kg buoyancy gain)	+14.5%

Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

Water displaces steel, making heavy objects slightly lighter. Buoyancy helps in lifting finds.

1. Vertical hold

*Caution: On a vertical surface, the magnet retains merely approx. 20-30% of its nominal pull.

2. Plate thickness effect

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

3. Heat tolerance

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

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

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

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 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 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: 010040-2026

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The presented product is an exceptionally strong rod magnet, manufactured from advanced NdFeB material, which, with dimensions of Ø20x18 mm, guarantees maximum efficiency. This specific item boasts a tolerance of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 13.19 kg), this product is in stock from our warehouse in Poland, ensuring quick order fulfillment. Additionally, its Ni-Cu-Ni coating shields 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 magnetic separators, where field concentration on a small surface counts. Thanks to the high power of 129.35 N with a weight of only 42.41 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.

Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 20.1 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 N38 are suitable for the majority of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø20x18), 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 Ø20x18 mm, which, at a weight of 42.41 g, makes it an element with impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 13.19 kg (force ~129.35 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 20 mm. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized through the diameter if your project requires it.

Strengths and weaknesses of Nd₂Fe₁₄B magnets.

Pros

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

They do not lose power, even over approximately ten years – the reduction in power is only ~1% (according to tests),
They feature excellent resistance to weakening of magnetic properties as a result of opposing magnetic fields,
By applying a shiny layer of silver, the element has an professional look,
Magnets exhibit maximum magnetic induction on the working surface,
Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
Possibility of detailed shaping as well as adapting to concrete applications,
Versatile presence in electronics industry – they find application in magnetic memories, motor assemblies, advanced medical instruments, and industrial machines.
Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Weaknesses

Problematic aspects of neodymium magnets and proposals for their use:

They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only shields the magnet but also improves its resistance to damage
Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
Magnets exposed to a humid environment can rust. Therefore during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
We recommend cover - magnetic mount, due to difficulties in creating nuts inside the magnet and complicated shapes.
Possible danger resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that small components of these magnets are able to complicate diagnosis medical in case of swallowing.
With large orders the cost of neodymium magnets is economically unviable,

Holding force characteristics

Maximum lifting capacity of the magnet – what it depends on?

The force parameter is a result of laboratory testing performed under specific, ideal conditions:

on a plate made of mild steel, perfectly concentrating the magnetic flux
with a cross-section of at least 10 mm
with a surface perfectly flat
with direct contact (without paint)
for force acting at a right angle (pull-off, not shear)
at standard ambient temperature

What influences lifting capacity in practice

Holding efficiency impacted by specific conditions, including (from most important):

Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
Force direction – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
Plate material – mild steel attracts best. Alloy admixtures reduce magnetic properties and lifting capacity.
Plate texture – ground elements ensure maximum contact, which improves field saturation. Rough surfaces weaken the grip.
Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity was measured using a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under shearing force the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate reduces the load capacity.

Safety rules for work with neodymium magnets

Machining danger

Dust generated during grinding of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Powerful field

Handle with care. Rare earth magnets attract from a distance and snap with massive power, often quicker than you can react.

Eye protection

Protect your eyes. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. We recommend safety glasses.

This is not a toy

Adult use only. Tiny parts can be swallowed, causing severe trauma. Keep out of reach of children and animals.

Avoid contact if allergic

It is widely known that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, avoid direct skin contact and choose versions in plastic housing.

Finger safety

Big blocks can crush fingers instantly. Never put your hand between two attracting surfaces.

GPS Danger

Be aware: rare earth magnets produce a field that disrupts precision electronics. Keep a separation from your phone, device, and GPS.

Electronic devices

Avoid bringing magnets near a wallet, laptop, or TV. The magnetism can irreversibly ruin these devices and wipe information from cards.

Permanent damage

Standard neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. The loss of strength is permanent.

Warning for heart patients

For implant holders: Strong magnetic fields affect medical devices. Keep minimum 30 cm distance or request help to work with the magnets.

Warning! Want to know more? Check our post: Are neodymium magnets dangerous?

MW 20x18 / N38 - cylindrical magnet

Technical - MW 20x18 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the assembly - data

Table 1: Static force (pull vs distance) - interaction chart MW 20x18 / N38

Table 2: Slippage force (wall) MW 20x18 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MW 20x18 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MW 20x18 / N38

Table 5: Thermal stability (stability) - resistance threshold MW 20x18 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MW 20x18 / N38

Table 7: Safety (HSE) (implants) - precautionary measures MW 20x18 / N38

Table 8: Dynamics (kinetic energy) - collision effects MW 20x18 / N38

Table 9: Coating parameters (durability) MW 20x18 / N38

Table 10: Construction data (Pc) MW 20x18 / N38

Table 11: Underwater work (magnet fishing) MW 20x18 / N38

1. Vertical hold

2. Plate thickness effect

3. Heat tolerance

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

Chemical composition

Environmental data

Magnet pull force

Magnetic Induction

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UMP 135x40 [M10+M12] GW F 600 kg / N38 - search holder

Strengths and weaknesses of Nd2Fe14B magnets.

Pros

Weaknesses

Holding force characteristics

Maximum lifting capacity of the magnet – what it depends on?

What influences lifting capacity in practice

Safety rules for work with neodymium magnets

Machining danger

Powerful field

Eye protection

This is not a toy

Avoid contact if allergic

Finger safety

GPS Danger

Electronic devices

Permanent damage

Warning for heart patients

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - interaction chart
MW 20x18 / N38

Table 2: Slippage force (wall)
MW 20x18 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 20x18 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 20x18 / N38

Table 5: Thermal stability (stability) - resistance threshold
MW 20x18 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 20x18 / N38

Table 7: Safety (HSE) (implants) - precautionary measures
MW 20x18 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MW 20x18 / N38

Table 9: Coating parameters (durability)
MW 20x18 / N38

Table 10: Construction data (P_c)
MW 20x18 / N38

Table 11: Underwater work (magnet fishing)
MW 20x18 / N38

Strengths and weaknesses of Nd₂Fe₁₄B magnets.