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MW 20x2.5 / 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 010042

GTIN/EAN: 5906301810414

5.00

Diameter Ø

20 mm [±0,1 mm]

Height

2.5 mm [±0,1 mm]

Weight

5.89 g

Magnetization Direction

↑ axial

Load capacity

2.41 kg / 23.65 N

Magnetic Induction

150.34 mT / 1503 Gs

Coating

[NiCuNi] Nickel

technical details »

2.51 ZŁ with VAT / pcs + price for transport

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Physical properties - MW 20x2.5 / N38 - cylindrical magnet

Specification / characteristics - MW 20x2.5 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010042
GTIN/EAN	5906301810414
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	2.5 mm [±0,1 mm]
Weight	5.89 g
Magnetization Direction	↑ axial
Load capacity ~ ?	2.41 kg / 23.65 N
Magnetic Induction ~ ?	150.34 mT / 1503 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 20x2.5 / 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 product - data

The following information represent the outcome of a engineering analysis. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Real-world conditions might slightly differ from theoretical values. Treat these calculations as a preliminary roadmap when designing systems.

Table 1: Static pull force (force vs gap) - interaction chart
MW 20x2.5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1503 Gs 150.3 mT	2.41 kg / 5.31 pounds 2410.0 g / 23.6 N	warning
1 mm	1431 Gs 143.1 mT	2.18 kg / 4.82 pounds 2184.9 g / 21.4 N	warning
2 mm	1328 Gs 132.8 mT	1.88 kg / 4.15 pounds 1882.0 g / 18.5 N	safe
3 mm	1206 Gs 120.6 mT	1.55 kg / 3.42 pounds 1552.2 g / 15.2 N	safe
5 mm	947 Gs 94.7 mT	0.96 kg / 2.11 pounds 957.1 g / 9.4 N	safe
10 mm	457 Gs 45.7 mT	0.22 kg / 0.49 pounds 223.1 g / 2.2 N	safe
15 mm	224 Gs 22.4 mT	0.05 kg / 0.12 pounds 53.7 g / 0.5 N	safe
20 mm	120 Gs 12.0 mT	0.02 kg / 0.03 pounds 15.4 g / 0.2 N	safe
30 mm	44 Gs 4.4 mT	0.00 kg / 0.00 pounds 2.1 g / 0.0 N	safe
50 mm	11 Gs 1.1 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	safe

Pulling power decreases drastically with every mm of distance. Keep in mind that even a microscopic distance (e.g., dirt, varnish, rust) significantly diminishes the holding power. Neodymiums operate most effectively in perfect adhesion; gap drastically cuts the power. Notice how rapidly the load capacity plummet, when the magnet does not adhere directly to the metal substrate. When designing the assembly, discard additional spacers.

Table 2: Vertical force (vertical surface)
MW 20x2.5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.48 kg / 1.06 pounds 482.0 g / 4.7 N
1 mm	Stal (~0.2)	0.44 kg / 0.96 pounds 436.0 g / 4.3 N
2 mm	Stal (~0.2)	0.38 kg / 0.83 pounds 376.0 g / 3.7 N
3 mm	Stal (~0.2)	0.31 kg / 0.68 pounds 310.0 g / 3.0 N
5 mm	Stal (~0.2)	0.19 kg / 0.42 pounds 192.0 g / 1.9 N
10 mm	Stal (~0.2)	0.04 kg / 0.10 pounds 44.0 g / 0.4 N
15 mm	Stal (~0.2)	0.01 kg / 0.02 pounds 10.0 g / 0.1 N
20 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 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

This section presents the approximate force required to initiate the slippage of the magnet downwards against a vertical steel plate (considering standard friction). This value is a function of the gap size between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MW 20x2.5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.72 kg / 1.59 pounds 723.0 g / 7.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.48 kg / 1.06 pounds 482.0 g / 4.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.24 kg / 0.53 pounds 241.0 g / 2.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.21 kg / 2.66 pounds 1205.0 g / 11.8 N

When hanging a holder on a vertical wall (e.g., a car body), it you can count on barely about 20%-30% of its nominal power. Gravity and a weak degree of grip mean that holders move down easier than they pull off. Want to create a vertical fastening? Note that the shear force is noticeably lower than the maximum static pull force. On a slippery surface, the element will give way down under a significantly smaller weight. Application of an anti-slip pad can effectively raise the stability.

Table 4: Material efficiency (saturation) - power losses
MW 20x2.5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.24 kg / 0.53 pounds 241.0 g / 2.4 N
1 mm	25%	0.60 kg / 1.33 pounds 602.5 g / 5.9 N
2 mm	50%	1.21 kg / 2.66 pounds 1205.0 g / 11.8 N
3 mm	75%	1.81 kg / 3.98 pounds 1807.5 g / 17.7 N
5 mm	100%	2.41 kg / 5.31 pounds 2410.0 g / 23.6 N
10 mm	100%	2.41 kg / 5.31 pounds 2410.0 g / 23.6 N
11 mm	100%	2.41 kg / 5.31 pounds 2410.0 g / 23.6 N
12 mm	100%	2.41 kg / 5.31 pounds 2410.0 g / 23.6 N

A thin sheet is unable to conduct the full magnetic flux, which squanders power of the magnet. If you install a neodymium to a too thin substrate, the field will pass right through and the pull force will drop sharply. To squeeze 100% of this magnet's potential, you need a suitably thick piece of steel. The material oversaturation causes that on thin elements (e.g., car bodies), the holder shows lower pull force. We advise picking the steel dimension based on the following data.

Table 5: Thermal resistance (stability) - resistance threshold
MW 20x2.5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	2.41 kg / 5.31 pounds 2410.0 g / 23.6 N	OK
40 °C	-2.2%	2.36 kg / 5.20 pounds 2357.0 g / 23.1 N	OK
60 °C	-4.4%	2.30 kg / 5.08 pounds 2304.0 g / 22.6 N
80 °C	-6.6%	2.25 kg / 4.96 pounds 2250.9 g / 22.1 N
100 °C	-28.8%	1.72 kg / 3.78 pounds 1715.9 g / 16.8 N

Standard neodymium magnets lose power after exceeding the maximum temperature. Avoid high temperatures – heat can permanently demagnetize this product. With every degree above norm, the neodymium's capacity temporarily drops. Do not use this magnet close to ovens higher than its working range. Ignoring the limit will cause irreversible degradation of magnetism.

*Engineering note: Heat tolerance is determined by both grade, but also on the magnet's shape. Thin magnets (low permeance coefficient) risk losing magnetic properties at lower temperatures than taller cylinders. Red status in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MW 20x2.5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	4.38 kg / 9.65 pounds 2 771 Gs	0.66 kg / 1.45 pounds 656 g / 6.4 N	N/A
1 mm	4.20 kg / 9.25 pounds 2 944 Gs	0.63 kg / 1.39 pounds 629 g / 6.2 N	3.78 kg / 8.33 pounds ~0 Gs
2 mm	3.97 kg / 8.75 pounds 2 862 Gs	0.60 kg / 1.31 pounds 595 g / 5.8 N	3.57 kg / 7.87 pounds ~0 Gs
3 mm	3.70 kg / 8.17 pounds 2 766 Gs	0.56 kg / 1.22 pounds 556 g / 5.5 N	3.33 kg / 7.35 pounds ~0 Gs
5 mm	3.12 kg / 6.88 pounds 2 538 Gs	0.47 kg / 1.03 pounds 468 g / 4.6 N	2.81 kg / 6.19 pounds ~0 Gs
10 mm	1.74 kg / 3.83 pounds 1 895 Gs	0.26 kg / 0.57 pounds 261 g / 2.6 N	1.56 kg / 3.45 pounds ~0 Gs
20 mm	0.41 kg / 0.89 pounds 915 Gs	0.06 kg / 0.13 pounds 61 g / 0.6 N	0.36 kg / 0.80 pounds ~0 Gs
50 mm	0.01 kg / 0.02 pounds 140 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.01 pounds 88 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
70 mm	0.00 kg / 0.00 pounds 58 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 41 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 29 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 22 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 much further distance than a magnet and steel setup. Such a system of two magnets generates a stronger field and a larger range of performance. Designing a powerful holder? Apply two magnets instead of a neodymium and a striker plate. Exercise caution that when attracting two neodymiums, the impact force is extreme. The levitation is slightly lower than the attraction, but still significant.
*Field value between like poles drops to ~0 Gs at the midpoint of the gap (due to field cancellation).
* Calculations refer to shear force of a pair of matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Hazards (implants) - warnings
MW 20x2.5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	7.0 cm
Hearing aid	10 Gs (1.0 mT)	5.5 cm
Mechanical watch	20 Gs (2.0 mT)	4.5 cm
Mobile device	40 Gs (4.0 mT)	3.5 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 is a serious hazard to IT equipment as well as medical implants. These NdFeB products generate a flux that prevents correct functioning of digital equipment. Remember: the invisible magnetic field acts through matter and housings. Special caution must be exercised by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, car keys, speakers, and displays. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Collisions (cracking risk) - collision effects
MW 20x2.5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	21.55 km/h (5.99 m/s)	0.11 J
30 mm	35.35 km/h (9.82 m/s)	0.28 J
50 mm	45.62 km/h (12.67 m/s)	0.47 J
100 mm	64.51 km/h (17.92 m/s)	0.95 J

Neodymium magnets are prone to chipping – a violent impact against metal risks their cracking. Control the attraction moment – a neodymium left loose speeds with massive force. Kinetic force can cause material chips or painful pinches to skin. Always hold the magnet during mounting so it doesn't slam with momentum 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: Coating parameters (durability)
MW 20x2.5 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (P_c)
MW 20x2.5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 996 Mx	60.0 µWb
P_c Coefficient	0.19	Low (Flat)

Flux value emitted by the magnet pole. Key data when building generators and motors. P_c value defines the working geometry.

Table 11: Physics of underwater searching
MW 20x2.5 / N38

Environment	Effective steel pull	Effect
Air (land)	2.41 kg	Standard
Water (riverbed)	2.76 kg (+0.35 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!

In water, the magnet feels stronger thanks to Archimedes' principle. Buoyancy helps in lifting finds.

1. Wall mount (shear)

*Note: On a vertical surface, the magnet holds just ~20% of its nominal pull.

2. Steel saturation

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

3. Thermal stability

*For N38 grade, 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) = 0.19

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 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%

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: 010042-2026

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The offered product is a very strong cylindrical magnet, produced from durable NdFeB material, which, with dimensions of Ø20x2.5 mm, guarantees the highest energy density. The MW 20x2.5 / N38 model features an accuracy of ±0.1mm and professional build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 2.41 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 23.65 N with a weight of only 5.89 g, this rod is indispensable in electronics and wherever low weight is crucial.

Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure long-term durability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering an optimal price-to-power ratio and operational stability. If you need even stronger magnets in the same volume (Ø20x2.5), 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 20 mm and height 2.5 mm. The key parameter here is the lifting capacity amounting to approximately 2.41 kg (force ~23.65 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 2.5 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 diametrically if your project requires it.

Pros and cons of rare earth magnets.

Advantages

Apart from their superior magnetic energy, neodymium magnets have these key benefits:

They have stable power, and over more than ten years their performance decreases symbolically – ~1% (in testing),
They possess excellent resistance to magnetism drop when exposed to opposing magnetic fields,
Thanks to the shiny finish, the coating of Ni-Cu-Ni, gold, or silver-plated gives an aesthetic appearance,
Magnetic induction on the surface of the magnet turns out to be maximum,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
Thanks to freedom in shaping and the capacity to adapt to complex applications,
Fundamental importance in modern industrial fields – they are commonly used in HDD drives, electric motors, medical devices, as well as multitasking production systems.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:

Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a special holder, which not only secures them against impacts but also raises their durability
When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
We recommend a housing - magnetic mount, due to difficulties in producing nuts inside the magnet and complex shapes.
Health risk to health – tiny shards of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Furthermore, small components of these magnets can complicate diagnosis medical in case of swallowing.
With mass production the cost of neodymium magnets is a challenge,

Pull force analysis

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

Holding force of 2.41 kg is a theoretical maximum value conducted under standard conditions:

with the contact of a sheet made of special test steel, guaranteeing maximum field concentration
whose thickness reaches at least 10 mm
with an ground touching surface
under conditions of gap-free contact (metal-to-metal)
under perpendicular force direction (90-degree angle)
in temp. approx. 20°C

Determinants of lifting force in real conditions

During everyday use, the actual holding force results from many variables, presented from crucial:

Distance (between the magnet and the plate), since even a microscopic distance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to paint, rust or debris).
Angle of force application – highest force is reached only during pulling at a 90° angle. The force required to slide of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
Base massiveness – too thin sheet does not close the flux, causing part of the flux to be wasted into the air.
Material composition – not every steel reacts the same. High carbon content worsen the attraction effect.
Surface finish – ideal contact is obtained only on smooth steel. Rough texture create air cushions, weakening the magnet.
Operating temperature – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, in contrast under parallel forces the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate reduces the load capacity.

Safe handling of NdFeB magnets

Data carriers

Data protection: Neodymium magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Swallowing risk

Always keep magnets away from children. Risk of swallowing is significant, and the effects of magnets clamping inside the body are fatal.

Crushing force

Mind your fingers. Two large magnets will join instantly with a force of massive weight, crushing everything in their path. Exercise extreme caution!

Life threat

Individuals with a ICD must maintain an safe separation from magnets. The magnetism can stop the functioning of the implant.

Fire risk

Dust produced during grinding of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.

Skin irritation risks

Allergy Notice: The nickel-copper-nickel coating contains nickel. If an allergic reaction appears, cease working with magnets and wear gloves.

Risk of cracking

Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Immense force

Handle magnets consciously. Their immense force can surprise even experienced users. Stay alert and respect their force.

Impact on smartphones

Be aware: rare earth magnets produce a field that interferes with precision electronics. Maintain a safe distance from your phone, tablet, and GPS.

Heat warning

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

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

MW 20x2.5 / N38 - cylindrical magnet

Physical properties - MW 20x2.5 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the product - data

Table 1: Static pull force (force vs gap) - interaction chart MW 20x2.5 / N38

Table 2: Vertical force (vertical surface) MW 20x2.5 / N38

Table 3: Vertical assembly (sliding) - vertical pull MW 20x2.5 / N38

Table 4: Material efficiency (saturation) - power losses MW 20x2.5 / N38

Table 5: Thermal resistance (stability) - resistance threshold MW 20x2.5 / N38

Table 6: Two magnets (repulsion) - forces in the system MW 20x2.5 / N38

Table 7: Hazards (implants) - warnings MW 20x2.5 / N38

Table 8: Collisions (cracking risk) - collision effects MW 20x2.5 / N38

Table 9: Coating parameters (durability) MW 20x2.5 / N38

Table 10: Electrical data (Pc) MW 20x2.5 / N38

Table 11: Physics of underwater searching MW 20x2.5 / N38

1. Wall mount (shear)

2. Steel saturation

3. Thermal stability

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

Material specification

Sustainability

Pulling force

Magnetic Field

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Pros and cons of rare earth magnets.

Advantages

Limitations

Pull force analysis

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

Determinants of lifting force in real conditions

Safe handling of NdFeB magnets

Data carriers

Swallowing risk

Crushing force

Life threat

Fire risk

Skin irritation risks

Risk of cracking

Immense force

Impact on smartphones

Heat warning

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - interaction chart
MW 20x2.5 / N38

Table 2: Vertical force (vertical surface)
MW 20x2.5 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MW 20x2.5 / N38

Table 4: Material efficiency (saturation) - power losses
MW 20x2.5 / N38

Table 5: Thermal resistance (stability) - resistance threshold
MW 20x2.5 / N38

Table 6: Two magnets (repulsion) - forces in the system
MW 20x2.5 / N38

Table 7: Hazards (implants) - warnings
MW 20x2.5 / N38

Table 8: Collisions (cracking risk) - collision effects
MW 20x2.5 / N38

Table 9: Coating parameters (durability)
MW 20x2.5 / N38

Table 10: Electrical data (P_c)
MW 20x2.5 / N38

Table 11: Physics of underwater searching
MW 20x2.5 / N38