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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

view parameters »

16.64 ZŁ with VAT / pcs + price for transport

13.53 ZŁ net + 23% VAT / pcs

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Detailed specification - 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

Physical modeling of the product - technical parameters

These information constitute the direct effect of a engineering analysis. Values were calculated on models for the material Nd₂Fe₁₄B. Real-world parameters might slightly differ from theoretical values. Use these data as a supplementary guide during assembly planning.

Table 1: Static pull force (force vs gap) - characteristics
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 pounds 19600.0 g / 192.3 N	critical level
1 mm	3975 Gs 397.5 mT	16.82 kg / 37.08 pounds 16820.5 g / 165.0 N	critical level
2 mm	3645 Gs 364.5 mT	14.15 kg / 31.19 pounds 14147.5 g / 138.8 N	critical level
3 mm	3316 Gs 331.6 mT	11.71 kg / 25.81 pounds 11707.5 g / 114.9 N	critical level
5 mm	2692 Gs 269.2 mT	7.72 kg / 17.02 pounds 7718.0 g / 75.7 N	medium risk
10 mm	1518 Gs 151.8 mT	2.45 kg / 5.41 pounds 2451.8 g / 24.1 N	medium risk
15 mm	863 Gs 86.3 mT	0.79 kg / 1.75 pounds 793.5 g / 7.8 N	weak grip
20 mm	517 Gs 51.7 mT	0.29 kg / 0.63 pounds 285.1 g / 2.8 N	weak grip
30 mm	219 Gs 21.9 mT	0.05 kg / 0.11 pounds 51.2 g / 0.5 N	weak grip
50 mm	63 Gs 6.3 mT	0.00 kg / 0.01 pounds 4.2 g / 0.0 N	weak grip

Pulling power weakens drastically with every subsequent millimeter of spacing. Remember that even a microscopic distance (e.g., contamination, varnish, dust) significantly diminishes the holding power. Neodymiums hold most effectively during direct contact; distance nullifies the power. See how flashily the load capacity fall, when the product does not adhere directly to the metal substrate. When planning the arrangement, eliminate unnecessary gaps.

Table 2: Slippage hold (vertical surface)
MW 25x12 / N38

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

This section presents the estimated force required to start the sliding of the magnet downwards on a upright metal surface (considering standard friction coefficient). This value is a function of the gap size between the magnet and the metal.

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 pounds 5880.0 g / 57.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	3.92 kg / 8.64 pounds 3920.0 g / 38.5 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.96 kg / 4.32 pounds 1960.0 g / 19.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	9.80 kg / 21.61 pounds 9800.0 g / 96.1 N

When placing a holder on a upright plane (e.g., a board), it will only hold barely about 1/5 of its nominal power. Gravity and a weak degree of grip mean that holders move down easier than they pull off. Planning a vertical fastening? Note that the sliding force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the magnet will give way down under a noticeably lighter load. Using a rubber pad can effectively increase the grip.

Table 4: Material efficiency (substrate influence) - 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 pounds 980.0 g / 9.6 N
1 mm	13%	2.45 kg / 5.40 pounds 2450.0 g / 24.0 N
2 mm	25%	4.90 kg / 10.80 pounds 4900.0 g / 48.1 N
3 mm	38%	7.35 kg / 16.20 pounds 7350.0 g / 72.1 N
5 mm	63%	12.25 kg / 27.01 pounds 12250.0 g / 120.2 N
10 mm	100%	19.60 kg / 43.21 pounds 19600.0 g / 192.3 N
11 mm	100%	19.60 kg / 43.21 pounds 19600.0 g / 192.3 N
12 mm	100%	19.60 kg / 43.21 pounds 19600.0 g / 192.3 N

A thin sheet is unable to focus the full magnetic flux, which wastes potential of the magnet. If you mount a strong magnet to a too thin substrate, the magnetism will pass right through and the pull force will drop sharply. To utilize the maximum of this neodymium's potential, you need a suitably thick piece of steel. The saturation effect means that on sheet metal structures (e.g., car bodies), the product works worse. We suggest choosing the steel thickness based on the following data.

Table 5: Thermal resistance (material behavior) - thermal limit
MW 25x12 / N38

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

Standard neodymium magnets change their properties power above the temperature limit. Avoid high temperatures – heat can irreversibly damage this product. With increasing heat, the neodymium's capacity momentarily decreases. Refrain from using this magnet near heat sources higher than its operating temperature limit. Ignoring the limit will cause irreversible degradation of magnetic properties.

*Technical advisory: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (low Pc) risk losing magnetic properties under lower heat stress compared to rod magnets. The danger warning in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - field range
MW 25x12 / N38

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

Two magnetic products interact from a much further distance than a neodymium and metal combination. Such a system of magnet-to-magnet creates a more powerful interaction and a wider radius of operation. Designing a strong closure? Utilize two neodymiums instead of a neodymium and a steel. Remember that when attracting two neodymiums, the impact force is massive. The repulsion force is marginally weaker than the connection force, but still impressive.
*Flux density between like poles is approximately ~0 Gs in the exact middle of the gap (caused by magnetic field nullification).
Note: Results apply to shear force of dual identical magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (implants) - 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
Phone / Smartphone	40 Gs (4.0 mT)	6.0 cm
Remote	50 Gs (5.0 mT)	5.5 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

Powerful magnet radiation poses a large risk to electronics as well as pacemakers. These magnets produce a flux that disrupts operation of sensitive medical devices. Notice: the invisible magnetic field penetrates the body and plastic. Special caution must be taken by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, remotes, membranes, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Impact energy (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 delicate – a collision with steel causes immediate chipping. Watch the impact speed – a magnet released freely turns into a projectile. Striking energy can destroy the magnet or painful pinches to skin. Be sure to control the product during mounting so it doesn't slam with momentum against the metal. A collision at high speed ends with a crack of the neodymium. Wear eye protection when playing with large magnets.

Table 9: Surface protection spec
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)

The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Note the thickness of the protective layer.

Table 10: Construction 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 emitted by the magnet pole. Key data in coil applications as well as sensors. P_c value defines the working geometry.

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%

Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

*Caution: On a vertical wall, the magnet retains just ~20% of its perpendicular strength.

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) severely reduces the holding force.

3. Thermal stability

*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) = 0.57

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%

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: 010502-2026

Measurement Calculator

Force (pull)

lbs

Magnetic Field

Induction (Gs)

Tesla (T)

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The offered product is an exceptionally strong cylindrical magnet, composed of advanced NdFeB material, which, at dimensions of Ø25x12 mm, guarantees maximum efficiency. The MW 25x12 / N38 component boasts high dimensional repeatability and professional build quality, making it an ideal 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 lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating shields 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 pull force of 192.25 N with a weight of only 44.18 g, this rod is indispensable in miniature devices and wherever low weight is crucial.

Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 25.1 mm) using two-component epoxy glues. To ensure stability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.

Grade N38 is the most popular standard for industrial neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need even stronger magnets in the same volume (Ø25x12), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

This model is characterized by dimensions Ø25x12 mm, which, at a weight of 44.18 g, makes it an element with high 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 external factors, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 12 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 as well as cons of neodymium magnets.

Advantages

Besides their immense magnetic power, neodymium magnets offer the following advantages:

They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (based on calculations),
Magnets perfectly defend themselves against loss of magnetization caused by external fields,
A magnet with a shiny nickel surface is more attractive,
The surface of neodymium magnets generates a strong magnetic field – this is a distinguishing feature,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
In view of the option of free forming and customization to custom solutions, magnetic components can be manufactured in a broad palette of shapes and sizes, which increases their versatility,
Wide application in high-tech industry – they find application in mass storage devices, electromotive mechanisms, advanced medical instruments, and multitasking production systems.
Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Limitations

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
We recommend casing - magnetic mount, due to difficulties in realizing nuts inside the magnet and complex forms.
Potential hazard to health – tiny shards of magnets are risky, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these products can be problematic in diagnostics medical in case of swallowing.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Lifting parameters

Breakaway strength of the magnet in ideal conditions – what contributes to it?

Magnet power was defined for ideal contact conditions, taking into account:

with the use of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
whose transverse dimension reaches at least 10 mm
with an ideally smooth touching surface
with zero gap (no impurities)
for force applied at a right angle (pull-off, not shear)
at conditions approx. 20°C

Impact of factors on magnetic holding capacity in practice

Bear in mind that the magnet holding may be lower depending on elements below, starting with the most relevant:

Distance – existence of foreign body (paint, tape, air) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of maximum force).
Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
Steel grade – ideal substrate is high-permeability steel. Cast iron may attract less.
Surface condition – ground elements ensure maximum contact, which increases field saturation. Uneven metal reduce efficiency.
Temperature influence – hot environment weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the holding force is lower. In addition, even a slight gap between the magnet and the plate reduces the lifting capacity.

Precautions when working with NdFeB magnets

Warning for heart patients

Health Alert: Strong magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.

Maximum temperature

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

Risk of cracking

Protect your eyes. Magnets can fracture upon violent connection, launching shards into the air. We recommend safety glasses.

Powerful field

Use magnets consciously. Their immense force can surprise even professionals. Plan your moves and respect their power.

Serious injuries

Danger of trauma: The pulling power is so immense that it can cause hematomas, pinching, and broken bones. Protective gloves are recommended.

Nickel coating and allergies

Some people experience a hypersensitivity to Ni, which is the common plating for neodymium magnets. Frequent touching might lead to dermatitis. We strongly advise use protective gloves.

Flammability

Powder generated during grinding of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.

Keep away from computers

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

Keep away from electronics

Navigation devices and smartphones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.

Keep away from children

Always keep magnets out of reach of children. Risk of swallowing is high, and the effects of magnets clamping inside the body are fatal.

Caution! Need more info? Check our post: Why are neodymium magnets dangerous?

MW 25x12 / N38 - cylindrical magnet

Detailed specification - MW 25x12 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the product - technical parameters

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

Table 2: Slippage hold (vertical surface) MW 25x12 / N38

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

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

Table 5: Thermal resistance (material behavior) - thermal limit MW 25x12 / N38

Table 6: Two magnets (repulsion) - field range MW 25x12 / N38

Table 7: Safety (HSE) (implants) - precautionary measures MW 25x12 / N38

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

Table 9: Surface protection spec MW 25x12 / N38

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

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

1. Shear force

2. Plate thickness effect

3. Thermal stability

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

Chemical composition

Sustainability

Force (pull)

Magnetic Field

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UMT 29x38 black / N38 - board holder

Pros as well as cons of neodymium magnets.

Advantages

Limitations

Lifting parameters

Breakaway strength of the magnet in ideal conditions – what contributes to it?

Impact of factors on magnetic holding capacity in practice

Precautions when working with NdFeB magnets

Warning for heart patients

Maximum temperature

Risk of cracking

Powerful field

Serious injuries

Nickel coating and allergies

Flammability

Keep away from computers

Keep away from electronics

Keep away from children

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Slippage hold (vertical surface)
MW 25x12 / N38

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

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

Table 5: Thermal resistance (material behavior) - thermal limit
MW 25x12 / N38

Table 6: Two magnets (repulsion) - field range
MW 25x12 / N38

Table 7: Safety (HSE) (implants) - precautionary measures
MW 25x12 / N38

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

Table 9: Surface protection spec
MW 25x12 / N38

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

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