Product available Ships in 2 days

MW 5x25 / 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 010086

GTIN/EAN: 5906301810858

5.00

Diameter Ø

5 mm [±0,1 mm]

Height

25 mm [±0,1 mm]

Weight

3.68 g

Magnetization Direction

↑ axial

Load capacity

0.45 kg / 4.41 N

Magnetic Induction

615.39 mT / 6154 Gs

Coating

[NiCuNi] Nickel

see technical data »

2.31 ZŁ with VAT / pcs + price for transport

1.880 ZŁ net + 23% VAT / pcs

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Physical properties - MW 5x25 / N38 - cylindrical magnet

Specification / characteristics - MW 5x25 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010086
GTIN/EAN	5906301810858
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	5 mm [±0,1 mm]
Height	25 mm [±0,1 mm]
Weight	3.68 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.45 kg / 4.41 N
Magnetic Induction ~ ?	615.39 mT / 6154 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x25 / 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

Physical modeling of the assembly - report

The following data constitute the result of a engineering analysis. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Actual performance might slightly differ. Use these calculations as a reference point during assembly planning.

Table 1: Static force (force vs gap) - interaction chart
MW 5x25 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	6144 Gs 614.4 mT	0.45 kg / 0.99 LBS 450.0 g / 4.4 N	low risk
1 mm	3869 Gs 386.9 mT	0.18 kg / 0.39 LBS 178.4 g / 1.8 N	low risk
2 mm	2300 Gs 230.0 mT	0.06 kg / 0.14 LBS 63.1 g / 0.6 N	low risk
3 mm	1412 Gs 141.2 mT	0.02 kg / 0.05 LBS 23.8 g / 0.2 N	low risk
5 mm	633 Gs 63.3 mT	0.00 kg / 0.01 LBS 4.8 g / 0.0 N	low risk
10 mm	169 Gs 16.9 mT	0.00 kg / 0.00 LBS 0.3 g / 0.0 N	low risk
15 mm	72 Gs 7.2 mT	0.00 kg / 0.00 LBS 0.1 g / 0.0 N	low risk
20 mm	38 Gs 3.8 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk
30 mm	15 Gs 1.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk
50 mm	4 Gs 0.4 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk

Grip strength decreases sharply with every mm of gap. Note that even a very thin break (e.g., contamination, varnish, rust) noticeably reduces the pull force. Magnetic products operate strongest during direct contact; air break nullifies the power. See how quickly the pull force drop, when the magnet does not adhere directly to the steel surface. When calculating the arrangement, eliminate unnecessary gaps.

Table 2: Shear capacity (vertical surface)
MW 5x25 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.09 kg / 0.20 LBS 90.0 g / 0.9 N
1 mm	Stal (~0.2)	0.04 kg / 0.08 LBS 36.0 g / 0.4 N
2 mm	Stal (~0.2)	0.01 kg / 0.03 LBS 12.0 g / 0.1 N
3 mm	Stal (~0.2)	0.00 kg / 0.01 LBS 4.0 g / 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

The following data indicates the estimated weight limit sufficient to cause the shifting of the magnet down along a upright steel plate (assuming standard friction coefficient). This value depends on the separation distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 5x25 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.14 kg / 0.30 LBS 135.0 g / 1.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.09 kg / 0.20 LBS 90.0 g / 0.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.05 kg / 0.10 LBS 45.0 g / 0.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.23 kg / 0.50 LBS 225.0 g / 2.2 N

When placing a element on a upright wall (e.g., a car body), it will only hold only approx. 1/5 of its nominal power. Gravitational force and a weak degree of grip mean that products slide down easier than they pull off. Planning a wall mount? Remember that the shear force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the element will slide down under a significantly smaller weight. Using a rubber pad can significantly raise the stability.

Table 4: Material efficiency (substrate influence) - power losses
MW 5x25 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.05 kg / 0.10 LBS 45.0 g / 0.4 N
1 mm	25%	0.11 kg / 0.25 LBS 112.5 g / 1.1 N
2 mm	50%	0.23 kg / 0.50 LBS 225.0 g / 2.2 N
3 mm	75%	0.34 kg / 0.74 LBS 337.5 g / 3.3 N
5 mm	100%	0.45 kg / 0.99 LBS 450.0 g / 4.4 N
10 mm	100%	0.45 kg / 0.99 LBS 450.0 g / 4.4 N
11 mm	100%	0.45 kg / 0.99 LBS 450.0 g / 4.4 N
12 mm	100%	0.45 kg / 0.99 LBS 450.0 g / 4.4 N

A thin sheet is unable to focus the full magnetic flux, which weakens actual performance of the magnet. Should you attach a powerful product to a too thin substrate, the field will penetrate right through and the attraction force will be weaker. To achieve full efficiency of this neodymium's potential, you require a sufficiently solid backing of steel. The saturation effect means that on delicate walls (e.g., thin profiles), the magnet shows lower pull force. We advise picking the steel thickness based on the following data.

Table 5: Working in heat (stability) - power drop
MW 5x25 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.45 kg / 0.99 LBS 450.0 g / 4.4 N	OK
40 °C	-2.2%	0.44 kg / 0.97 LBS 440.1 g / 4.3 N	OK
60 °C	-4.4%	0.43 kg / 0.95 LBS 430.2 g / 4.2 N	OK
80 °C	-6.6%	0.42 kg / 0.93 LBS 420.3 g / 4.1 N
100 °C	-28.8%	0.32 kg / 0.71 LBS 320.4 g / 3.1 N

Ordinary NdFeB products change their properties strength above the temperature limit. Watch out for overheating – excessive heat can irreversibly damage this product. As the temperature rises, the neodymium's force briefly lowers. Do not use this magnet near heat sources higher than its working range. Ignoring the limit will lead to destruction of magnetic properties.

*Technical advisory: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (pancake types) may lose charge permanently under lower heat stress than taller cylinders. Red status in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field range
MW 5x25 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	4.57 kg / 10.08 LBS 6 167 Gs	0.69 kg / 1.51 LBS 686 g / 6.7 N	N/A
1 mm	2.97 kg / 6.55 LBS 9 909 Gs	0.45 kg / 0.98 LBS 446 g / 4.4 N	2.67 kg / 5.90 LBS ~0 Gs
2 mm	1.81 kg / 3.99 LBS 7 738 Gs	0.27 kg / 0.60 LBS 272 g / 2.7 N	1.63 kg / 3.60 LBS ~0 Gs
3 mm	1.08 kg / 2.37 LBS 5 965 Gs	0.16 kg / 0.36 LBS 162 g / 1.6 N	0.97 kg / 2.14 LBS ~0 Gs
5 mm	0.39 kg / 0.86 LBS 3 581 Gs	0.06 kg / 0.13 LBS 58 g / 0.6 N	0.35 kg / 0.77 LBS ~0 Gs
10 mm	0.05 kg / 0.11 LBS 1 266 Gs	0.01 kg / 0.02 LBS 7 g / 0.1 N	0.04 kg / 0.10 LBS ~0 Gs
20 mm	0.00 kg / 0.01 LBS 339 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 46 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 30 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 21 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 15 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 11 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 9 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnetic products interact from a much further distance than a magnet and steel combination. Such a system of two magnets produces a massive flux and a further horizon of operation. Want to build a solid fastener? Utilize two neodymiums instead of one magnet and a steel. Exercise caution that when connecting a pair of magnets, the pinch force is extreme. The repulsion force is slightly lower than the connection force, but still significant.
*Field value between like poles reaches ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
Important: Estimates apply to shear force of dual same magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (implants) - precautionary measures
MW 5x25 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	5.0 cm
Hearing aid	10 Gs (1.0 mT)	4.0 cm
Timepiece	20 Gs (2.0 mT)	3.0 cm
Mobile device	40 Gs (4.0 mT)	2.0 cm
Car key	50 Gs (5.0 mT)	2.0 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation poses a large risk to electronic devices and pacemakers. These NdFeB products produce a flux that disrupts operation of sensitive medical devices. Remember: the invisible magnetic field penetrates the body and glass. Exceptional care must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - collision effects
MW 5x25 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	11.16 km/h (3.10 m/s)	0.02 J
30 mm	19.32 km/h (5.37 m/s)	0.05 J
50 mm	24.94 km/h (6.93 m/s)	0.09 J
100 mm	35.27 km/h (9.80 m/s)	0.18 J

Magnetic elements are delicate – a strong collision with metal causes immediate chipping. Pay attention to connection velocity – a neodymium left loose speeds with massive force. Kinetic force can trigger coating fragments or painful pinches to fingers. Be sure to control the product during bringing near metal so it doesn't hit violently against the steel surface. A collision at high speed means shattering of the neodymium. Use safety goggles when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 5x25 / 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (P_c)
MW 5x25 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	1 450 Mx	14.5 µWb
P_c Coefficient	1.55	High (Stable)

Flux value emitted by the pole surface. Essential parameter in coil applications and motors. P_c value determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 5x25 / N38

Environment	Effective steel pull	Effect
Air (land)	0.45 kg	Standard
Water (riverbed)	0.52 kg (+0.07 kg buoyancy gain)	+14.5%

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

In water, the magnet feels stronger thanks to Archimedes' principle. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Wall mount (shear)

*Caution: On a vertical wall, the magnet retains merely ~20% of its max power.

2. Steel thickness impact

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

3. Heat tolerance

*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) = 1.55

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: 010086-2026

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21.49 ZŁ brutto / pcs

The offered product is an exceptionally strong rod magnet, produced from modern NdFeB material, which, at dimensions of Ø5x25 mm, guarantees maximum efficiency. The MW 5x25 / N38 model boasts high dimensional repeatability and industrial build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 0.45 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 4.41 N with a weight of only 3.68 g, this rod is indispensable in miniature devices and wherever low weight is crucial.

Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 5.1 mm) using epoxy glues. To ensure stability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Magnets N38 are suitable for 90% of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø5x25), 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 5 mm and height 25 mm. The key parameter here is the holding force amounting to approximately 0.45 kg (force ~4.41 N), which, with such compact 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.

This cylinder is magnetized axially (along the height of 25 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 and cons of Nd₂Fe₁₄B magnets.

Advantages

Besides their high retention, neodymium magnets are valued for these benefits:

They virtually do not lose power, because even after ten years the performance loss is only ~1% (based on calculations),
They are noted for resistance to demagnetization induced by external disturbances,
By applying a shiny coating of nickel, the element has an aesthetic look,
Neodymium magnets generate maximum magnetic induction on a contact point, which allows for strong attraction,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
Thanks to versatility in forming and the capacity to adapt to client solutions,
Key role in future technologies – they are used in magnetic memories, drive modules, advanced medical instruments, also technologically advanced constructions.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which makes them useful in compact constructions

Cons

Drawbacks and weaknesses of neodymium magnets: weaknesses and usage proposals

To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
Neodymium magnets lose their force 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 stability even at temperatures up to 230°C
Magnets exposed to a humid environment can rust. Therefore during using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
Limited possibility of producing threads in the magnet and complex forms - preferred is cover - mounting mechanism.
Health risk resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. It is also worth noting that small elements of these products can disrupt the diagnostic process medical in case of swallowing.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Magnetic strength at its maximum – what affects it?

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

with the contact of a sheet made of low-carbon steel, guaranteeing maximum field concentration
possessing a massiveness of minimum 10 mm to avoid saturation
with a plane free of scratches
with direct contact (no paint)
under axial force vector (90-degree angle)
at standard ambient temperature

Lifting capacity in real conditions – factors

Effective lifting capacity impacted by working environment parameters, such as (from most important):

Space between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, 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 generating force.
Steel grade – the best choice is high-permeability steel. Stainless steels may generate lower lifting capacity.
Plate texture – ground elements guarantee perfect abutment, which improves force. Uneven metal weaken the grip.
Heat – 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 performed on plates with a smooth surface of suitable thickness, under perpendicular forces, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate decreases the load capacity.

Safety rules for work with neodymium magnets

Bodily injuries

Large magnets can break fingers in a fraction of a second. Never put your hand betwixt two strong magnets.

Power loss in heat

Do not overheat. Neodymium magnets are susceptible to heat. If you require operation above 80°C, inquire about HT versions (H, SH, UH).

Mechanical processing

Machining of NdFeB material carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Handling rules

Before use, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.

Metal Allergy

Studies show that nickel (standard magnet coating) is a potent allergen. If your skin reacts to metals, refrain from direct skin contact and opt for coated magnets.

Risk of cracking

NdFeB magnets are sintered ceramics, which means they are prone to chipping. Clashing of two magnets will cause them breaking into small pieces.

Warning for heart patients

Patients with a pacemaker should maintain an safe separation from magnets. The magnetic field can disrupt the operation of the implant.

Cards and drives

Equipment safety: Neodymium magnets can damage data carriers and delicate electronics (pacemakers, hearing aids, mechanical watches).

No play value

Always keep magnets away from children. Ingestion danger is high, and the consequences of magnets clamping inside the body are tragic.

Threat to navigation

Navigation devices and mobile phones are extremely sensitive to magnetism. Direct contact with a strong magnet can permanently damage the sensors in your phone.

Security! More info about risks in the article: Safety of working with magnets.

MW 5x25 / N38 - cylindrical magnet

Physical properties - MW 5x25 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the assembly - report

Table 1: Static force (force vs gap) - interaction chart MW 5x25 / N38

Table 2: Shear capacity (vertical surface) MW 5x25 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MW 5x25 / N38

Table 4: Material efficiency (substrate influence) - power losses MW 5x25 / N38

Table 5: Working in heat (stability) - power drop MW 5x25 / N38

Table 6: Two magnets (attraction) - field range MW 5x25 / N38

Table 7: Protective zones (implants) - precautionary measures MW 5x25 / N38

Table 8: Dynamics (kinetic energy) - collision effects MW 5x25 / N38

Table 9: Anti-corrosion coating durability MW 5x25 / N38

Table 10: Electrical data (Pc) MW 5x25 / N38

Table 11: Underwater work (magnet fishing) MW 5x25 / N38

1. Wall mount (shear)

2. Steel thickness impact

3. Heat tolerance

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

Chemical composition

Ecology and recycling (GPSR)

Force (pull)

Magnetic Field

Other proposals

MW 10x4 / N38 - cylindrical magnet

MW 4x5 / N38 - cylindrical magnet

MP 36.2x11/6x7.5 / N38 - ring magnet

UMC 36x6/4X8 / N38 - cylindrical magnetic holder

Pros and cons of Nd2Fe14B magnets.

Advantages

Cons

Holding force characteristics

Magnetic strength at its maximum – what affects it?

Lifting capacity in real conditions – factors

Safety rules for work with neodymium magnets

Bodily injuries

Power loss in heat

Mechanical processing

Handling rules

Metal Allergy

Risk of cracking

Warning for heart patients

Cards and drives

No play value

Threat to navigation

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - interaction chart
MW 5x25 / N38

Table 2: Shear capacity (vertical surface)
MW 5x25 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 5x25 / N38

Table 4: Material efficiency (substrate influence) - power losses
MW 5x25 / N38

Table 5: Working in heat (stability) - power drop
MW 5x25 / N38

Table 6: Two magnets (attraction) - field range
MW 5x25 / N38

Table 7: Protective zones (implants) - precautionary measures
MW 5x25 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MW 5x25 / N38

Table 9: Anti-corrosion coating durability
MW 5x25 / N38

Table 10: Electrical data (P_c)
MW 5x25 / N38

Table 11: Underwater work (magnet fishing)
MW 5x25 / N38

Pros and cons of Nd₂Fe₁₄B magnets.