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MW 55x25 / 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 010081

GTIN/EAN: 5906301810803

5.00

Diameter Ø

55 mm [±0,1 mm]

Height

25 mm [±0,1 mm]

Weight

445.47 g

Magnetization Direction

↑ axial

Load capacity

92.25 kg / 904.94 N

Magnetic Induction

416.97 mT / 4170 Gs

Coating

[NiCuNi] Nickel

product specifications »

154.21 ZŁ with VAT / pcs + price for transport

125.37 ZŁ net + 23% VAT / pcs

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Technical details - MW 55x25 / N38 - cylindrical magnet

Specification / characteristics - MW 55x25 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010081
GTIN/EAN	5906301810803
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	55 mm [±0,1 mm]
Height	25 mm [±0,1 mm]
Weight	445.47 g
Magnetization Direction	↑ axial
Load capacity ~ ?	92.25 kg / 904.94 N
Magnetic Induction ~ ?	416.97 mT / 4170 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 55x25 / 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 analysis of the product - technical parameters

These values are the outcome of a mathematical calculation. Results rely on models for the class Nd₂Fe₁₄B. Operational conditions might slightly differ from theoretical values. Please consider these data as a preliminary roadmap when designing systems.

Table 1: Static pull force (pull vs gap) - power drop
MW 55x25 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4169 Gs 416.9 mT	92.25 kg / 203.38 lbs 92250.0 g / 905.0 N	dangerous!
1 mm	4034 Gs 403.4 mT	86.37 kg / 190.41 lbs 86369.8 g / 847.3 N	dangerous!
2 mm	3894 Gs 389.4 mT	80.47 kg / 177.41 lbs 80469.7 g / 789.4 N	dangerous!
3 mm	3751 Gs 375.1 mT	74.67 kg / 164.62 lbs 74670.6 g / 732.5 N	dangerous!
5 mm	3461 Gs 346.1 mT	63.58 kg / 140.17 lbs 63580.6 g / 623.7 N	dangerous!
10 mm	2756 Gs 275.6 mT	40.32 kg / 88.89 lbs 40320.8 g / 395.5 N	dangerous!
15 mm	2140 Gs 214.0 mT	24.31 kg / 53.59 lbs 24308.3 g / 238.5 N	dangerous!
20 mm	1644 Gs 164.4 mT	14.34 kg / 31.61 lbs 14338.1 g / 140.7 N	dangerous!
30 mm	975 Gs 97.5 mT	5.05 kg / 11.12 lbs 5046.0 g / 49.5 N	medium risk
50 mm	388 Gs 38.8 mT	0.80 kg / 1.77 lbs 801.0 g / 7.9 N	weak grip

Magnetic force drops significantly per each millimeter of spacing. Note that even a very thin break (e.g., contamination, varnish, dust) significantly reduces the pull force. Magnetic products hold optimally in perfect adhesion; gap drastically cuts the power. Notice how flashily the load capacity fall, when the product does not touch flatly to the steel surface. When calculating the arrangement, discard unnecessary gaps.

Table 2: Sliding load (wall)
MW 55x25 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	18.45 kg / 40.68 lbs 18450.0 g / 181.0 N
1 mm	Stal (~0.2)	17.27 kg / 38.08 lbs 17274.0 g / 169.5 N
2 mm	Stal (~0.2)	16.09 kg / 35.48 lbs 16094.0 g / 157.9 N
3 mm	Stal (~0.2)	14.93 kg / 32.92 lbs 14934.0 g / 146.5 N
5 mm	Stal (~0.2)	12.72 kg / 28.03 lbs 12716.0 g / 124.7 N
10 mm	Stal (~0.2)	8.06 kg / 17.78 lbs 8064.0 g / 79.1 N
15 mm	Stal (~0.2)	4.86 kg / 10.72 lbs 4862.0 g / 47.7 N
20 mm	Stal (~0.2)	2.87 kg / 6.32 lbs 2868.0 g / 28.1 N
30 mm	Stal (~0.2)	1.01 kg / 2.23 lbs 1010.0 g / 9.9 N
50 mm	Stal (~0.2)	0.16 kg / 0.35 lbs 160.0 g / 1.6 N

The table below calculates the theoretical holding capacity required to start the downward movement of the magnet vertically on a vertical metal surface (considering standard friction coefficient). This parameter varies with the separation distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MW 55x25 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	27.68 kg / 61.01 lbs 27675.0 g / 271.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	18.45 kg / 40.68 lbs 18450.0 g / 181.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	9.23 kg / 20.34 lbs 9225.0 g / 90.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	46.13 kg / 101.69 lbs 46125.0 g / 452.5 N

When mounting a magnet on a vertical plane (e.g., a fridge), it you can count on barely about 20%-30% of nominal attraction strength. Gravity and a low friction coefficient cause that magnets move down easier than they detach. Want to create a vertical fastening? Consider that the sliding force is significantly lower than the maximum static pull force. On a smooth steel, the magnet will slip down under a noticeably lighter weight. Utilizing a rubberized coating can drastically improve the result.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 55x25 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	3.08 kg / 6.78 lbs 3075.0 g / 30.2 N
1 mm	8%	7.69 kg / 16.95 lbs 7687.5 g / 75.4 N
2 mm	17%	15.37 kg / 33.90 lbs 15375.0 g / 150.8 N
3 mm	25%	23.06 kg / 50.84 lbs 23062.5 g / 226.2 N
5 mm	42%	38.44 kg / 84.74 lbs 38437.5 g / 377.1 N
10 mm	83%	76.88 kg / 169.48 lbs 76875.0 g / 754.1 N
11 mm	92%	84.56 kg / 186.43 lbs 84562.5 g / 829.6 N
12 mm	100%	92.25 kg / 203.38 lbs 92250.0 g / 905.0 N

A too thin steel cannot take in the full magnetic flux, which weakens actual performance of the holder. Should you mount a strong magnet to a too thin substrate, the flux will penetrate right through and the attraction force will be weaker. To squeeze full efficiency of this magnet's power, you need a suitably thick piece of steel. The material oversaturation causes that on sheet metal structures (e.g., appliance housings), the magnet works worse. We suggest choosing the steel cross-section based on the following data.

Table 5: Thermal resistance (material behavior) - power drop
MW 55x25 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	92.25 kg / 203.38 lbs 92250.0 g / 905.0 N	OK
40 °C	-2.2%	90.22 kg / 198.90 lbs 90220.5 g / 885.1 N	OK
60 °C	-4.4%	88.19 kg / 194.43 lbs 88191.0 g / 865.2 N
80 °C	-6.6%	86.16 kg / 189.95 lbs 86161.5 g / 845.2 N
100 °C	-28.8%	65.68 kg / 144.80 lbs 65682.0 g / 644.3 N

Classic neodymiums lose strength after exceeding the maximum temperature. Avoid high temperatures – excessive heat can permanently destroy this magnet. With every degree above norm, the magnet's capacity briefly lowers. Do not use this product in hot environments higher than its operating temperature limit. Ignoring the limit will cause irreversible degradation of magnetism.

*Important note: Thermal stability is determined by both grade, but also on the magnet's shape. Low-profile magnets (low Pc) may lose charge permanently under lower heat stress compared to rod magnets. Warning indicator in the table indicates permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 55x25 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	254.60 kg / 561.30 lbs 5 431 Gs	38.19 kg / 84.20 lbs 38190 g / 374.6 N	N/A
1 mm	246.57 kg / 543.59 lbs 8 206 Gs	36.99 kg / 81.54 lbs 36985 g / 362.8 N	221.91 kg / 489.23 lbs ~0 Gs
2 mm	238.37 kg / 525.52 lbs 8 068 Gs	35.76 kg / 78.83 lbs 35756 g / 350.8 N	214.54 kg / 472.97 lbs ~0 Gs
3 mm	230.21 kg / 507.52 lbs 7 929 Gs	34.53 kg / 76.13 lbs 34531 g / 338.7 N	207.19 kg / 456.77 lbs ~0 Gs
5 mm	214.04 kg / 471.88 lbs 7 645 Gs	32.11 kg / 70.78 lbs 32106 g / 315.0 N	192.64 kg / 424.69 lbs ~0 Gs
10 mm	175.48 kg / 386.86 lbs 6 923 Gs	26.32 kg / 58.03 lbs 26322 g / 258.2 N	157.93 kg / 348.17 lbs ~0 Gs
20 mm	111.28 kg / 245.33 lbs 5 513 Gs	16.69 kg / 36.80 lbs 16692 g / 163.8 N	100.15 kg / 220.80 lbs ~0 Gs
50 mm	23.33 kg / 51.43 lbs 2 524 Gs	3.50 kg / 7.71 lbs 3499 g / 34.3 N	20.99 kg / 46.28 lbs ~0 Gs
60 mm	13.93 kg / 30.70 lbs 1 950 Gs	2.09 kg / 4.61 lbs 2089 g / 20.5 N	12.53 kg / 27.63 lbs ~0 Gs
70 mm	8.48 kg / 18.70 lbs 1 522 Gs	1.27 kg / 2.81 lbs 1272 g / 12.5 N	7.63 kg / 16.83 lbs ~0 Gs
80 mm	5.29 kg / 11.66 lbs 1 202 Gs	0.79 kg / 1.75 lbs 793 g / 7.8 N	4.76 kg / 10.50 lbs ~0 Gs
90 mm	3.38 kg / 7.45 lbs 961 Gs	0.51 kg / 1.12 lbs 507 g / 5.0 N	3.04 kg / 6.70 lbs ~0 Gs
100 mm	2.21 kg / 4.87 lbs 777 Gs	0.33 kg / 0.73 lbs 332 g / 3.3 N	1.99 kg / 4.39 lbs ~0 Gs

Two strong neodymiums interact from a significantly greater distance than a neodymium and metal combination. The setup of magnet-to-magnet generates a stronger field and a larger range of performance. Planning to create a strong closure? Use a pair of magnets instead of a neodymium and a striker plate. Remember that when attracting two neodymiums, the collision energy is huge. The levitation is a bit weaker than the attraction, but still impressive.
*Field value between like poles reaches ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Attention: Figures apply to shear force of two same magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - warnings
MW 55x25 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	27.5 cm
Hearing aid	10 Gs (1.0 mT)	21.5 cm
Mechanical watch	20 Gs (2.0 mT)	17.0 cm
Mobile device	40 Gs (4.0 mT)	13.0 cm
Remote	50 Gs (5.0 mT)	12.0 cm
Payment card	400 Gs (40.0 mT)	5.0 cm
HDD hard drive	600 Gs (60.0 mT)	4.5 cm

A strong magnetic field poses a large risk to electronic devices and pacemakers. These NdFeB products generate a field that disrupts operation of digital equipment. Remember: the invisible magnetic field acts through matter and plastic. Increased vigilance must be exercised by people with hearing aids and insulin pumps. The risk also applies to: automatic timepieces, remotes, speakers, and screens. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Collisions (cracking risk) - warning
MW 55x25 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	18.05 km/h (5.01 m/s)	5.60 J
30 mm	25.98 km/h (7.22 m/s)	11.60 J
50 mm	32.63 km/h (9.06 m/s)	18.30 J
100 mm	45.90 km/h (12.75 m/s)	36.21 J

Magnetic elements are very brittle – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely turns into a projectile. Kinetic force can cause material chips or painful pinches to fingers. Hold the magnet firmly during installation so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Use safety goggles when playing with large magnets.

Table 9: Anti-corrosion coating durability
MW 55x25 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (Flux)
MW 55x25 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	101 075 Mx	1010.7 µWb
P_c Coefficient	0.55	Low (Flat)

Flux value passing through the pole surface. Essential parameter when building generators as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Physics of underwater searching
MW 55x25 / N38

Environment	Effective steel pull	Effect
Air (land)	92.25 kg	Standard
Water (riverbed)	105.63 kg (+13.38 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!

The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Wall mount (shear)

*Note: On a vertical wall, the magnet holds merely a fraction of its max power.

2. Plate thickness effect

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

3. Power loss vs temp

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.55

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

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%

Ecology and recycling (GPSR)

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: 010081-2026

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This product is a very strong cylinder magnet, produced from advanced NdFeB material, which, with dimensions of Ø55x25 mm, guarantees maximum efficiency. The MW 55x25 / N38 component boasts high dimensional repeatability and industrial build quality, making it an excellent solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 92.25 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

This model is created for building generators, advanced sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the pull force of 904.94 N with a weight of only 445.47 g, this rod is indispensable in electronics and wherever low weight is crucial.

Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure long-term durability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability 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 (Ø55x25), 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 Ø55x25 mm, which, at a weight of 445.47 g, makes it an element with high magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 92.25 kg (force ~904.94 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against 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 55 mm. Such an arrangement is most desirable 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.

Strengths and weaknesses of rare earth magnets.

Benefits

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

They retain attractive force for almost 10 years – the loss is just ~1% (based on simulations),
Neodymium magnets remain extremely resistant to magnetic field loss caused by magnetic disturbances,
In other words, due to the metallic layer of silver, the element gains a professional look,
Magnetic induction on the surface of the magnet remains impressive,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
In view of the ability of accurate shaping and adaptation to specialized needs, NdFeB magnets can be manufactured in a wide range of shapes and sizes, which expands the range of possible applications,
Universal use in modern technologies – they serve a role in mass storage devices, brushless drives, precision medical tools, also modern systems.
Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which makes them useful in compact constructions

Cons

Characteristics of disadvantages of neodymium magnets: weaknesses and usage proposals

At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
Limited ability of creating nuts in the magnet and complicated shapes - recommended is casing - mounting mechanism.
Health risk related to microscopic parts of magnets are risky, in case of ingestion, which gains importance in the context of child safety. Additionally, small components of these magnets can complicate diagnosis medical in case of swallowing.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

Best holding force of the magnet in ideal parameters – what affects it?

Information about lifting capacity is the result of a measurement for the most favorable conditions, taking into account:

with the contact of a yoke made of special test steel, guaranteeing maximum field concentration
with a thickness no less than 10 mm
with a surface cleaned and smooth
with direct contact (no impurities)
under axial application of breakaway force (90-degree angle)
at temperature room level

Determinants of lifting force in real conditions

In real-world applications, the real power results from a number of factors, listed from most significant:

Distance – the presence of foreign body (paint, dirt, gap) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
Load vector – highest force is obtained only during pulling at a 90° angle. The shear force of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
Chemical composition of the base – mild steel attracts best. Higher carbon content lower magnetic permeability and holding force.
Base smoothness – the more even the plate, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
Temperature – temperature increase causes a temporary drop of force. It is worth remembering the thermal limit for a given model.

Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.

H&S for magnets

Machining danger

Drilling and cutting of NdFeB material carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Magnetic media

Equipment safety: Strong magnets can damage data carriers and sensitive devices (pacemakers, hearing aids, timepieces).

Crushing force

Risk of injury: The pulling power is so great that it can cause blood blisters, pinching, and even bone fractures. Protective gloves are recommended.

Allergic reactions

Certain individuals suffer from a sensitization to nickel, which is the typical protective layer for neodymium magnets. Frequent touching might lead to an allergic reaction. We suggest wear safety gloves.

Immense force

Use magnets with awareness. Their immense force can shock even experienced users. Stay alert and do not underestimate their force.

Demagnetization risk

Avoid heat. NdFeB magnets are sensitive to heat. If you need resistance above 80°C, look for special high-temperature series (H, SH, UH).

Phone sensors

Navigation devices and smartphones are highly sensitive to magnetism. Close proximity with a strong magnet can ruin the sensors in your phone.

Fragile material

NdFeB magnets are sintered ceramics, which means they are very brittle. Collision of two magnets will cause them breaking into small pieces.

Warning for heart patients

Patients with a heart stimulator must maintain an absolute distance from magnets. The magnetic field can interfere with the functioning of the implant.

Danger to the youngest

NdFeB magnets are not toys. Eating a few magnets may result in them pinching intestinal walls, which poses a critical condition and requires immediate surgery.

Warning! Looking for details? Check our post: Are neodymium magnets dangerous?

MW 55x25 / N38 - cylindrical magnet

Technical details - MW 55x25 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the product - technical parameters

Table 1: Static pull force (pull vs gap) - power drop MW 55x25 / N38

Table 2: Sliding load (wall) MW 55x25 / N38

Table 3: Wall mounting (shearing) - vertical pull MW 55x25 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MW 55x25 / N38

Table 5: Thermal resistance (material behavior) - power drop MW 55x25 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MW 55x25 / N38

Table 7: Protective zones (electronics) - warnings MW 55x25 / N38

Table 8: Collisions (cracking risk) - warning MW 55x25 / N38

Table 9: Anti-corrosion coating durability MW 55x25 / N38

Table 10: Electrical data (Flux) MW 55x25 / N38

Table 11: Physics of underwater searching MW 55x25 / N38

1. Wall mount (shear)

2. Plate thickness effect

3. Power loss vs temp

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

Chemical composition

Ecology and recycling (GPSR)

Magnet pull force

Field Strength

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HH 20x7.2 [M4] / N38 - through hole magnetic holder

Strengths and weaknesses of rare earth magnets.

Benefits

Cons

Holding force characteristics

Best holding force of the magnet in ideal parameters – what affects it?

Determinants of lifting force in real conditions

H&S for magnets

Machining danger

Magnetic media

Crushing force

Allergic reactions

Immense force

Demagnetization risk

Phone sensors

Fragile material

Warning for heart patients

Danger to the youngest

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - power drop
MW 55x25 / N38

Table 2: Sliding load (wall)
MW 55x25 / N38

Table 3: Wall mounting (shearing) - vertical pull
MW 55x25 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 55x25 / N38

Table 5: Thermal resistance (material behavior) - power drop
MW 55x25 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 55x25 / N38

Table 7: Protective zones (electronics) - warnings
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Table 8: Collisions (cracking risk) - warning
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Table 9: Anti-corrosion coating durability
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Table 10: Electrical data (Flux)
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Table 11: Physics of underwater searching
MW 55x25 / N38