Product available Ships today (order by 14:00)

MW 25x12 / 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 010502

GTIN/EAN: 5906301814986

5.00

Diameter Ø

25 mm [±0,1 mm]

Height

12 mm [±0,1 mm]

Weight

44.18 g

Magnetization Direction

↑ axial

Load capacity

19.60 kg / 192.25 N

Magnetic Induction

429.18 mT / 4292 Gs

Coating

[NiCuNi] Nickel

see specifications »

16.64 ZŁ with VAT / pcs + price for transport

13.53 ZŁ net + 23% VAT / pcs

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Physical properties - MW 25x12 / N38 - cylindrical magnet

Specification / characteristics - MW 25x12 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010502
GTIN/EAN	5906301814986
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	25 mm [±0,1 mm]
Height	12 mm [±0,1 mm]
Weight	44.18 g
Magnetization Direction	↑ axial
Load capacity ~ ?	19.60 kg / 192.25 N
Magnetic Induction ~ ?	429.18 mT / 4292 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 25x12 / 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 modeling of the product - data

The following data represent the outcome of a mathematical calculation. Results rely on models for the class Nd₂Fe₁₄B. Real-world parameters might slightly deviate from the simulation results. Use these data as a supplementary guide for designers.

Table 1: Static force (pull vs gap) - interaction chart
MW 25x12 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4291 Gs 429.1 mT	19.60 kg / 43.21 LBS 19600.0 g / 192.3 N	crushing
1 mm	3975 Gs 397.5 mT	16.82 kg / 37.08 LBS 16820.5 g / 165.0 N	crushing
2 mm	3645 Gs 364.5 mT	14.15 kg / 31.19 LBS 14147.5 g / 138.8 N	crushing
3 mm	3316 Gs 331.6 mT	11.71 kg / 25.81 LBS 11707.5 g / 114.9 N	crushing
5 mm	2692 Gs 269.2 mT	7.72 kg / 17.02 LBS 7718.0 g / 75.7 N	medium risk
10 mm	1518 Gs 151.8 mT	2.45 kg / 5.41 LBS 2451.8 g / 24.1 N	medium risk
15 mm	863 Gs 86.3 mT	0.79 kg / 1.75 LBS 793.5 g / 7.8 N	weak grip
20 mm	517 Gs 51.7 mT	0.29 kg / 0.63 LBS 285.1 g / 2.8 N	weak grip
30 mm	219 Gs 21.9 mT	0.05 kg / 0.11 LBS 51.2 g / 0.5 N	weak grip
50 mm	63 Gs 6.3 mT	0.00 kg / 0.01 LBS 4.2 g / 0.0 N	weak grip

Pulling power decreases drastically per each millimeter of distance. Keep in mind that even a microscopic distance (e.g., contamination, varnish, veneer) noticeably reduces the pull force. Neodymiums work most effectively in perfect adhesion; distance nullifies the power. Analyze how quickly the load capacity drop, when the magnet does not touch directly to the steel surface. When planning the assembly, avoid additional spacers.

Table 2: Shear hold (wall)
MW 25x12 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	3.92 kg / 8.64 LBS 3920.0 g / 38.5 N
1 mm	Stal (~0.2)	3.36 kg / 7.42 LBS 3364.0 g / 33.0 N
2 mm	Stal (~0.2)	2.83 kg / 6.24 LBS 2830.0 g / 27.8 N
3 mm	Stal (~0.2)	2.34 kg / 5.16 LBS 2342.0 g / 23.0 N
5 mm	Stal (~0.2)	1.54 kg / 3.40 LBS 1544.0 g / 15.1 N
10 mm	Stal (~0.2)	0.49 kg / 1.08 LBS 490.0 g / 4.8 N
15 mm	Stal (~0.2)	0.16 kg / 0.35 LBS 158.0 g / 1.5 N
20 mm	Stal (~0.2)	0.06 kg / 0.13 LBS 58.0 g / 0.6 N
30 mm	Stal (~0.2)	0.01 kg / 0.02 LBS 10.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

The following data presents the theoretical holding capacity required to cause the shifting of the magnet downwards against a upright steel wall (considering standard friction coefficient). This parameter depends on the separation distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - vertical pull
MW 25x12 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	5.88 kg / 12.96 LBS 5880.0 g / 57.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	3.92 kg / 8.64 LBS 3920.0 g / 38.5 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.96 kg / 4.32 LBS 1960.0 g / 19.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	9.80 kg / 21.61 LBS 9800.0 g / 96.1 N

When hanging a holder on a vertical wall (e.g., a car body), it will maintain just approx. 20%-30% of its nominal power. Gravity and a low friction coefficient mean that magnets move down faster than they detach. Designing a vertical fastening? Note that the sliding force is much weaker than the maximum static pull force. On a painted metal, the element will give way down under a significantly smaller weight. Utilizing a rubberized layer can significantly improve the result.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 25x12 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.98 kg / 2.16 LBS 980.0 g / 9.6 N
1 mm	13%	2.45 kg / 5.40 LBS 2450.0 g / 24.0 N
2 mm	25%	4.90 kg / 10.80 LBS 4900.0 g / 48.1 N
3 mm	38%	7.35 kg / 16.20 LBS 7350.0 g / 72.1 N
5 mm	63%	12.25 kg / 27.01 LBS 12250.0 g / 120.2 N
10 mm	100%	19.60 kg / 43.21 LBS 19600.0 g / 192.3 N
11 mm	100%	19.60 kg / 43.21 LBS 19600.0 g / 192.3 N
12 mm	100%	19.60 kg / 43.21 LBS 19600.0 g / 192.3 N

A too thin steel is incapable of focus the entire magnetic field, which wastes potential of the holder. If you attach a powerful product to a weak sheet, the field will pass right through and the attraction force will be weaker. To squeeze 100% of this neodymium's potential, you require a sufficiently solid piece of steel. The saturation effect causes that on delicate walls (e.g., thin profiles), the holder holds weaker. We recommend selecting the steel cross-section based on the following data.

Table 5: Working in heat (stability) - power drop
MW 25x12 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	19.60 kg / 43.21 LBS 19600.0 g / 192.3 N	OK
40 °C	-2.2%	19.17 kg / 42.26 LBS 19168.8 g / 188.0 N	OK
60 °C	-4.4%	18.74 kg / 41.31 LBS 18737.6 g / 183.8 N
80 °C	-6.6%	18.31 kg / 40.36 LBS 18306.4 g / 179.6 N
100 °C	-28.8%	13.96 kg / 30.77 LBS 13955.2 g / 136.9 N

Classic neodymiums lose parameters above the temperature limit. Avoid high temperatures – heat can permanently demagnetize this product. As the temperature rises, the neodymium's capacity temporarily drops. Refrain from using this magnet near heat sources exceeding its safe range. Too high temperature will result in destruction of magnetism.

*Engineering note: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Flat magnets (pancake types) risk losing magnetic properties at lower temperatures than long magnets. The danger warning in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 25x12 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	55.71 kg / 122.82 LBS 5 494 Gs	8.36 kg / 18.42 LBS 8357 g / 82.0 N	N/A
1 mm	51.78 kg / 114.14 LBS 8 273 Gs	7.77 kg / 17.12 LBS 7766 g / 76.2 N	46.60 kg / 102.73 LBS ~0 Gs
2 mm	47.81 kg / 105.40 LBS 7 949 Gs	7.17 kg / 15.81 LBS 7172 g / 70.4 N	43.03 kg / 94.86 LBS ~0 Gs
3 mm	43.94 kg / 96.88 LBS 7 621 Gs	6.59 kg / 14.53 LBS 6592 g / 64.7 N	39.55 kg / 87.19 LBS ~0 Gs
5 mm	36.65 kg / 80.80 LBS 6 960 Gs	5.50 kg / 12.12 LBS 5497 g / 53.9 N	32.98 kg / 72.72 LBS ~0 Gs
10 mm	21.94 kg / 48.36 LBS 5 385 Gs	3.29 kg / 7.25 LBS 3291 g / 32.3 N	19.74 kg / 43.53 LBS ~0 Gs
20 mm	6.97 kg / 15.36 LBS 3 035 Gs	1.05 kg / 2.30 LBS 1045 g / 10.3 N	6.27 kg / 13.83 LBS ~0 Gs
50 mm	0.33 kg / 0.72 LBS 657 Gs	0.05 kg / 0.11 LBS 49 g / 0.5 N	0.29 kg / 0.65 LBS ~0 Gs
60 mm	0.15 kg / 0.32 LBS 439 Gs	0.02 kg / 0.05 LBS 22 g / 0.2 N	0.13 kg / 0.29 LBS ~0 Gs
70 mm	0.07 kg / 0.16 LBS 306 Gs	0.01 kg / 0.02 LBS 11 g / 0.1 N	0.06 kg / 0.14 LBS ~0 Gs
80 mm	0.04 kg / 0.08 LBS 221 Gs	0.01 kg / 0.01 LBS 6 g / 0.1 N	0.03 kg / 0.07 LBS ~0 Gs
90 mm	0.02 kg / 0.05 LBS 165 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.04 LBS ~0 Gs
100 mm	0.01 kg / 0.03 LBS 126 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.02 LBS ~0 Gs

Two magnets attract each other from a significantly greater distance than a magnet and sheet setup. The setup of magnet-to-magnet produces a massive flux and a wider radius of action. Designing a solid fastener? Use a pair of magnets instead of one magnet and a striker plate. Exercise caution that when attracting two neodymiums, the pinch force is extreme. The levitation is marginally weaker than the connection force, but still impressive.
*Field value for N-N configuration is approximately ~0 Gs in the exact middle of the gap (caused by magnetic field nullification).
Important: Estimates refer to shear force of dual identical neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Hazards (electronics) - precautionary measures
MW 25x12 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	13.0 cm
Hearing aid	10 Gs (1.0 mT)	10.0 cm
Timepiece	20 Gs (2.0 mT)	8.0 cm
Mobile device	40 Gs (4.0 mT)	6.0 cm
Car key	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

Extremely neodym field is a large risk to electronics and medical implants. These magnets generate a field that disrupts operation of sensitive medical devices. Be aware: the invisible magnetic field penetrates the body and glass. Exceptional care must be taken by people with hearing aids and insulin pumps. The risk also applies to: mechanical watches, car keys, membranes, and displays. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - collision effects
MW 25x12 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.84 km/h (6.35 m/s)	0.89 J
30 mm	36.85 km/h (10.24 m/s)	2.31 J
50 mm	47.51 km/h (13.20 m/s)	3.85 J
100 mm	67.17 km/h (18.66 m/s)	7.69 J

NdFeB products are very brittle – a violent impact against metal can result in shattering. Control the attraction moment – a neodymium left loose speeds with massive force. Striking energy can trigger coating fragments or dangerous crushing to fingers. Be sure to control the product during installation so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear eye protection when playing with powerful specimens.

Table 9: Corrosion resistance
MW 25x12 / 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 25x12 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	21 413 Mx	214.1 µWb
P_c Coefficient	0.57	Low (Flat)

Total magnetic flux passing through the magnet pole. Essential parameter in coil applications and motors. The P_c coefficient defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 25x12 / N38

Environment	Effective steel pull	Effect
Air (land)	19.60 kg	Standard
Water (riverbed)	22.44 kg (+2.84 kg buoyancy gain)	+14.5%

Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

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

1. Sliding resistance

*Caution: On a vertical wall, the magnet holds just a fraction of its perpendicular strength.

2. Steel saturation

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

3. Thermal stability

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.57

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%

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: 010502-2026

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The presented product is a very strong cylindrical magnet, made from advanced NdFeB material, which, with dimensions of Ø25x12 mm, guarantees optimal power. This specific item is characterized by an accuracy of ±0.1mm and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 19.60 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

This model is ideal for building electric motors, advanced sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the pull force of 192.25 N with a weight of only 44.18 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.

Due to the delicate structure of the ceramic sinter, 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 are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Magnets N38 are strong enough for 90% of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø25x12), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

This model is characterized by dimensions Ø25x12 mm, which, at a weight of 44.18 g, makes it an element with impressive magnetic energy density. The value of 192.25 N means that the magnet is capable of holding a weight many times exceeding its own mass of 44.18 g. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 12 mm), which means that the N and S poles are located on the flat, circular surfaces. 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.

Pros and cons of Nd₂Fe₁₄B magnets.

Pros

Apart from their strong holding force, neodymium magnets have these key benefits:

They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (based on calculations),
Neodymium magnets remain extremely resistant to demagnetization caused by external field sources,
A magnet with a metallic nickel surface looks better,
The surface of neodymium magnets generates a powerful magnetic field – this is a distinguishing feature,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
Considering the ability of flexible molding and adaptation to custom requirements, magnetic components can be produced in a wide range of shapes and sizes, which increases their versatility,
Key role in high-tech industry – they serve a role in computer drives, electric motors, diagnostic systems, as well as modern systems.
Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Weaknesses

Cons of neodymium magnets and ways of using them

To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
When exposed to high temperature, neodymium magnets suffer a drop in power. 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
Magnets exposed to a humid environment can rust. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
We suggest cover - magnetic mount, due to difficulties in producing nuts inside the magnet and complicated forms.
Possible danger to health – tiny shards of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child safety. Additionally, small elements of these magnets can complicate diagnosis medical after entering the body.
With mass production the cost of neodymium magnets is a challenge,

Holding force characteristics

Maximum holding power of the magnet – what affects it?

Information about lifting capacity was determined for optimal configuration, assuming:

with the application of a yoke made of low-carbon steel, ensuring full magnetic saturation
whose transverse dimension reaches at least 10 mm
with a plane free of scratches
without the slightest clearance between the magnet and steel
during detachment in a direction perpendicular to the plane
in neutral thermal conditions

Key elements affecting lifting force

Bear in mind that the application force may be lower subject to the following factors, starting with the most relevant:

Gap (between the magnet and the metal), because even a tiny distance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
Steel thickness – too thin sheet does not close the flux, causing part of the flux to be wasted into the air.
Material type – the best choice is pure iron steel. Cast iron may attract less.
Surface finish – ideal contact is possible only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
Thermal conditions – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet and the plate decreases the lifting capacity.

Precautions when working with neodymium magnets

Avoid contact if allergic

It is widely known that nickel (standard magnet coating) is a strong allergen. If your skin reacts to metals, refrain from direct skin contact or opt for encased magnets.

Handling guide

Handle magnets with awareness. Their powerful strength can shock even professionals. Be vigilant and respect their power.

Crushing risk

Protect your hands. Two powerful magnets will snap together immediately with a force of massive weight, crushing anything in their path. Be careful!

This is not a toy

Strictly store magnets out of reach of children. Choking hazard is high, and the effects of magnets connecting inside the body are very dangerous.

Threat to electronics

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

Permanent damage

Standard neodymium magnets (N-type) lose power when the temperature surpasses 80°C. Damage is permanent.

Shattering risk

Watch out for shards. Magnets can fracture upon violent connection, ejecting shards into the air. Eye protection is mandatory.

Warning for heart patients

Patients with a pacemaker should keep an absolute distance from magnets. The magnetism can interfere with the operation of the life-saving device.

Phone sensors

An intense magnetic field disrupts the operation of compasses in smartphones and navigation systems. Do not bring magnets near a smartphone to prevent breaking the sensors.

Dust explosion hazard

Combustion risk: Rare earth powder is highly flammable. Avoid machining magnets without safety gear as this risks ignition.

Attention! Looking for details? Check our post: Why are neodymium magnets dangerous?

MW 25x12 / N38 - cylindrical magnet

Physical properties - MW 25x12 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the product - data

Table 1: Static force (pull vs gap) - interaction chart MW 25x12 / N38

Table 2: Shear hold (wall) MW 25x12 / N38

Table 3: Wall mounting (sliding) - vertical pull MW 25x12 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MW 25x12 / N38

Table 5: Working in heat (stability) - power drop MW 25x12 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MW 25x12 / N38

Table 7: Hazards (electronics) - precautionary measures MW 25x12 / N38

Table 8: Collisions (kinetic energy) - collision effects MW 25x12 / N38

Table 9: Corrosion resistance MW 25x12 / N38

Table 10: Electrical data (Flux) MW 25x12 / N38

Table 11: Underwater work (magnet fishing) MW 25x12 / N38

1. Sliding resistance

2. Steel saturation

3. Thermal stability

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

Chemical composition

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

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MW 10x2 / N38 - cylindrical magnet

MW 10x3 / N38 - cylindrical magnet

Pros and cons of Nd2Fe14B magnets.

Pros

Weaknesses

Holding force characteristics

Maximum holding power of the magnet – what affects it?

Key elements affecting lifting force

Precautions when working with neodymium magnets

Avoid contact if allergic

Handling guide

Crushing risk

This is not a toy

Threat to electronics

Permanent damage

Shattering risk

Warning for heart patients

Phone sensors

Dust explosion hazard

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - interaction chart
MW 25x12 / N38

Table 2: Shear hold (wall)
MW 25x12 / N38

Table 3: Wall mounting (sliding) - vertical pull
MW 25x12 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MW 25x12 / N38

Table 5: Working in heat (stability) - power drop
MW 25x12 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 25x12 / N38

Table 7: Hazards (electronics) - precautionary measures
MW 25x12 / N38

Table 8: Collisions (kinetic energy) - collision effects
MW 25x12 / N38

Table 9: Corrosion resistance
MW 25x12 / N38

Table 10: Electrical data (Flux)
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Table 11: Underwater work (magnet fishing)
MW 25x12 / N38

Pros and cons of Nd₂Fe₁₄B magnets.