Product available Ships today (order by 14:00)

MW 25x5 / N38AH - 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 010501

GTIN/EAN: 5906301814993

Diameter Ø

25 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

18.41 g

Magnetization Direction

↑ axial

Load capacity

7.29 kg / 71.47 N

Magnetic Induction

219.99 mT / 2200 Gs

Coating

[NiCuNi] Nickel

see technical data »

16.68 ZŁ with VAT / pcs + price for transport

13.56 ZŁ net + 23% VAT / pcs

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Lifting power as well as structure of a neodymium magnet can be reviewed on our our magnetic calculator.

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Detailed specification - MW 25x5 / N38AH - cylindrical magnet

Specification / characteristics - MW 25x5 / N38AH - cylindrical magnet

properties

properties	values
Cat. no.	010501
GTIN/EAN	5906301814993
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	5 mm [±0,1 mm]
Weight	18.41 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.29 kg / 71.47 N
Magnetic Induction ~ ?	219.99 mT / 2200 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38AH

Specification / characteristics MW 25x5 / N38AH - cylindrical magnet

properties	values	units
remenance Br [min. - max.] ?	12.2-12.5	kGs
remenance Br [min. - max.] ?	1120-1250	mT
coercivity bHc ?	≥ 11.3	kOe
coercivity bHc ?	≥ 899	kA/m
actual internal force iHc	≥ 33	kOe
actual internal force iHc	≥ 2624	kA/m
energy density [min. - max.] ?	36-39	BH max MGOe
energy density [min. - max.] ?	287-310	BH max KJ/m
max. temperature ?	≤ 230	°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 assembly - report

Presented data constitute the direct effect of a physical simulation. Values rely on models for the class Nd₂Fe₁₄B. Operational performance may deviate from the simulation results. Please consider these calculations as a reference point for designers.

Table 1: Static pull force (pull vs gap) - power drop
MW 25x5 / N38AH

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2292 Gs 229.2 mT	7.29 kg / 16.07 pounds 7290.0 g / 71.5 N	strong
1 mm	2180 Gs 218.0 mT	6.59 kg / 14.53 pounds 6591.0 g / 64.7 N	strong
2 mm	2042 Gs 204.2 mT	5.78 kg / 12.75 pounds 5782.0 g / 56.7 N	strong
3 mm	1888 Gs 188.8 mT	4.94 kg / 10.90 pounds 4942.8 g / 48.5 N	strong
5 mm	1564 Gs 156.4 mT	3.39 kg / 7.48 pounds 3394.1 g / 33.3 N	strong
10 mm	886 Gs 88.6 mT	1.09 kg / 2.40 pounds 1089.7 g / 10.7 N	safe
15 mm	493 Gs 49.3 mT	0.34 kg / 0.74 pounds 336.7 g / 3.3 N	safe
20 mm	287 Gs 28.7 mT	0.11 kg / 0.25 pounds 114.0 g / 1.1 N	safe
30 mm	115 Gs 11.5 mT	0.02 kg / 0.04 pounds 18.4 g / 0.2 N	safe
50 mm	31 Gs 3.1 mT	0.00 kg / 0.00 pounds 1.3 g / 0.0 N	safe

Pulling power weakens significantly with every mm of spacing. Remember that every additional insulation layer (e.g., contamination, paint, dust) noticeably diminishes the holding power. Neodymiums operate strongest during direct contact; air break kills the force. Notice how rapidly the pull force drop, when the product does not adhere tightly to the metal substrate. When designing the arrangement, avoid redundant distances.

Table 2: Slippage hold (wall)
MW 25x5 / N38AH

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.46 kg / 3.21 pounds 1458.0 g / 14.3 N
1 mm	Stal (~0.2)	1.32 kg / 2.91 pounds 1318.0 g / 12.9 N
2 mm	Stal (~0.2)	1.16 kg / 2.55 pounds 1156.0 g / 11.3 N
3 mm	Stal (~0.2)	0.99 kg / 2.18 pounds 988.0 g / 9.7 N
5 mm	Stal (~0.2)	0.68 kg / 1.49 pounds 678.0 g / 6.7 N
10 mm	Stal (~0.2)	0.22 kg / 0.48 pounds 218.0 g / 2.1 N
15 mm	Stal (~0.2)	0.07 kg / 0.15 pounds 68.0 g / 0.7 N
20 mm	Stal (~0.2)	0.02 kg / 0.05 pounds 22.0 g / 0.2 N
30 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

The table below defines the approximate holding capacity required to initiate the slippage of the magnet down along a upright steel wall (assuming standard friction). This value depends on the separation distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - vertical pull
MW 25x5 / N38AH

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.19 kg / 4.82 pounds 2187.0 g / 21.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.46 kg / 3.21 pounds 1458.0 g / 14.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.73 kg / 1.61 pounds 729.0 g / 7.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.65 kg / 8.04 pounds 3645.0 g / 35.8 N

When placing a element on a vertical plane (e.g., a car body), it you can count on barely about 20%-30% of nominal attraction strength. Gravitational force as well as a low friction coefficient mean that magnets slide down easier than they pop off the substrate. Want to create a vertical fastening? Remember that the sliding force is much weaker than the maximum static pull force. On a painted metal, the magnet will give way down under a noticeably lighter weight. Using a rubber coating can significantly improve the result.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 25x5 / N38AH

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.73 kg / 1.61 pounds 729.0 g / 7.2 N
1 mm	25%	1.82 kg / 4.02 pounds 1822.5 g / 17.9 N
2 mm	50%	3.65 kg / 8.04 pounds 3645.0 g / 35.8 N
3 mm	75%	5.47 kg / 12.05 pounds 5467.5 g / 53.6 N
5 mm	100%	7.29 kg / 16.07 pounds 7290.0 g / 71.5 N
10 mm	100%	7.29 kg / 16.07 pounds 7290.0 g / 71.5 N
11 mm	100%	7.29 kg / 16.07 pounds 7290.0 g / 71.5 N
12 mm	100%	7.29 kg / 16.07 pounds 7290.0 g / 71.5 N

A thin metal plate cannot take in the full magnetic flux, which wastes potential of the magnet. If you install a neodymium to a weak sheet, the field will pass right through and the attraction force will be weaker. To achieve the maximum of this magnet's potential, you need a suitably thick piece of steel. The material oversaturation causes that on thin elements (e.g., car bodies), the magnet holds weaker. We recommend selecting the steel dimension according to the table below.

Table 5: Working in heat (stability) - resistance threshold
MW 25x5 / N38AH

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.29 kg / 16.07 pounds 7290.0 g / 71.5 N	OK
80 °C	-6.6%	6.81 kg / 15.01 pounds 6808.9 g / 66.8 N
150 °C	-14.3%	6.25 kg / 13.77 pounds 6247.5 g / 61.3 N
200 °C	-19.8%	5.85 kg / 12.89 pounds 5846.6 g / 57.4 N
230 °C	-23.1%	5.61 kg / 12.36 pounds 5606.0 g / 55.0 N
250 °C	-45.3%	3.99 kg / 8.79 pounds 3987.6 g / 39.1 N

Classic neodymiums irreversibly lose strength above the temperature limit. Watch out for overheating – heat can irreversibly damage this product. As the temperature rises, the neodymium's force briefly decreases. Do not use this product near heat sources higher than its operating temperature limit. Too high temperature will result in destruction of magnetic properties.

*Technical advisory: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Thin magnets (low Pc) risk losing magnetic properties at lower temperatures compared to rod magnets. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 25x5 / N38AH

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	15.90 kg / 35.06 pounds 3 855 Gs	2.39 kg / 5.26 pounds 2385 g / 23.4 N	N/A
1 mm	15.19 kg / 33.48 pounds 4 480 Gs	2.28 kg / 5.02 pounds 2278 g / 22.3 N	13.67 kg / 30.13 pounds ~0 Gs
2 mm	14.38 kg / 31.70 pounds 4 359 Gs	2.16 kg / 4.75 pounds 2157 g / 21.2 N	12.94 kg / 28.53 pounds ~0 Gs
3 mm	13.51 kg / 29.79 pounds 4 226 Gs	2.03 kg / 4.47 pounds 2027 g / 19.9 N	12.16 kg / 26.81 pounds ~0 Gs
5 mm	11.70 kg / 25.79 pounds 3 932 Gs	1.75 kg / 3.87 pounds 1755 g / 17.2 N	10.53 kg / 23.21 pounds ~0 Gs
10 mm	7.40 kg / 16.32 pounds 3 128 Gs	1.11 kg / 2.45 pounds 1111 g / 10.9 N	6.66 kg / 14.69 pounds ~0 Gs
20 mm	2.38 kg / 5.24 pounds 1 773 Gs	0.36 kg / 0.79 pounds 357 g / 3.5 N	2.14 kg / 4.72 pounds ~0 Gs
50 mm	0.09 kg / 0.21 pounds 354 Gs	0.01 kg / 0.03 pounds 14 g / 0.1 N	0.09 kg / 0.19 pounds ~0 Gs
60 mm	0.04 kg / 0.09 pounds 231 Gs	0.01 kg / 0.01 pounds 6 g / 0.1 N	0.04 kg / 0.08 pounds ~0 Gs
70 mm	0.02 kg / 0.04 pounds 157 Gs	0.00 kg / 0.01 pounds 3 g / 0.0 N	0.02 kg / 0.04 pounds ~0 Gs
80 mm	0.01 kg / 0.02 pounds 112 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.01 kg / 0.01 pounds 82 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.01 pounds 62 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two strong neodymiums attract each other from a wider radius than a magnet and sheet combination. Such a system of magnet-to-magnet creates a more powerful interaction and a further horizon of operation. Planning to create a strong closure? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when connecting a pair of magnets, the impact force is massive. The repulsion force is a bit weaker than the attraction, but still significant.
*The magnetic induction between like poles reaches ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
Note: Calculations apply to sliding force of dual matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 25x5 / N38AH

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	10.0 cm
Hearing aid	10 Gs (1.0 mT)	7.5 cm
Mechanical watch	20 Gs (2.0 mT)	6.0 cm
Mobile device	40 Gs (4.0 mT)	5.0 cm
Car key	50 Gs (5.0 mT)	4.5 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

A strong magnetic field poses a real danger to electronics and medical implants. These NdFeB products produce a field that disrupts operation of digital equipment. Remember: the unseen radiation acts through matter and plastic. Exceptional care must be exercised by people with cochlear implants and drug dispensers. Also at risk are: automatic timepieces, remotes, speakers, and displays. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (cracking risk) - warning
MW 25x5 / N38AH

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	21.86 km/h (6.07 m/s)	0.34 J
30 mm	34.81 km/h (9.67 m/s)	0.86 J
50 mm	44.88 km/h (12.47 m/s)	1.43 J
100 mm	63.46 km/h (17.63 m/s)	2.86 J

NdFeB products are very brittle – a violent impact against metal risks their cracking. Pay attention to connection velocity – a magnet released freely turns into a projectile. Kinetic force can cause material chips or dangerous crushing to skin. Always hold the magnet during installation so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h means shattering of the magnet. Wear eye protection when working with large magnets.

Table 9: Corrosion resistance
MW 25x5 / N38AH

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. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MW 25x5 / N38AH

Parameter	Value	SI Unit / Description
Magnetic Flux	13 054 Mx	130.5 µWb
P_c Coefficient	0.29	Low (Flat)

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

Table 11: Hydrostatics and buoyancy
MW 25x5 / N38AH

Environment	Effective steel pull	Effect
Air (land)	7.29 kg	Standard
Water (riverbed)	8.35 kg (+1.06 kg buoyancy gain)	+14.5%

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

The magnetic field penetrates through water without any losses. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Shear force

*Note: On a vertical surface, the magnet holds merely ~20% of its perpendicular strength.

2. Efficiency vs thickness

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

3. Power loss vs temp

*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) = 0.29

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

Elemental analysis

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: 010501-2026

Magnet Unit Converter

Force (pull)

Force in kg

Force (N)

Pounds (lbs)

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The presented product is an extremely powerful rod magnet, composed of modern NdFeB material, which, at dimensions of Ø25x5 mm, guarantees the highest energy density. This specific item is characterized by an accuracy of ±0.1mm and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 7.29 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, 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 positioning or actuating element. Thanks to the pull force of 71.47 N with a weight of only 18.41 g, this rod is indispensable in miniature devices and wherever every gram matters.

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 epoxy glues. To ensure stability in automation, 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 a great economic balance and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø25x5), 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 Ø25x5 mm, which, at a weight of 18.41 g, makes it an element with high magnetic energy density. The value of 71.47 N means that the magnet is capable of holding a weight many times exceeding its own mass of 18.41 g. The product has a [NiCuNi] coating, which protects the surface against external factors, 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 25 mm. 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 neodymium magnets.

Benefits

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

Their strength is maintained, and after approximately 10 years it drops only by ~1% (according to research),
They do not lose their magnetic properties even under external field action,
Thanks to the glossy finish, the layer of nickel, gold-plated, or silver-plated gives an clean appearance,
They feature high magnetic induction at the operating surface, which improves attraction properties,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
Thanks to versatility in constructing and the capacity to modify to specific needs,
Universal use in innovative solutions – they are utilized in hard drives, motor assemblies, medical devices, also industrial machines.
Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in miniature devices

Limitations

Disadvantages of NdFeB magnets:

At strong impacts they can break, therefore we advise placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
Limited possibility of creating threads in the magnet and complicated forms - recommended is casing - magnetic holder.
Possible danger resulting from small fragments of magnets pose a threat, in case of ingestion, which becomes key in the context of child health protection. Additionally, small components of these devices can complicate diagnosis medical when they are in the body.
Due to neodymium price, their price is higher than average,

Pull force analysis

Highest magnetic holding force – what it depends on?

The lifting capacity listed is a measurement result conducted under the following configuration:

with the use of a sheet made of special test steel, ensuring maximum field concentration
whose transverse dimension is min. 10 mm
characterized by smoothness
without the slightest air gap between the magnet and steel
for force applied at a right angle (in the magnet axis)
at temperature room level

Lifting capacity in practice – influencing factors

It is worth knowing that the working load will differ subject to elements below, starting with the most relevant:

Distance – the presence of any layer (rust, tape, air) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
Force direction – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
Base massiveness – too thin sheet does not accept the full field, causing part of the power to be lost to the other side.
Material type – ideal substrate is high-permeability steel. Cast iron may generate lower lifting capacity.
Surface quality – the more even the plate, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
Thermal factor – hot environment reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity testing was conducted on a smooth plate of suitable thickness, under perpendicular forces, whereas 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 reduces the load capacity.

Warnings

Magnets are brittle

Despite the nickel coating, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Health Danger

Warning for patients: Powerful magnets affect electronics. Maintain minimum 30 cm distance or request help to handle the magnets.

Allergy Warning

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If an allergic reaction happens, cease handling magnets and use protective gear.

Powerful field

Handle with care. Neodymium magnets attract from a long distance and connect with massive power, often faster than you can move away.

Product not for children

Product intended for adults. Small elements can be swallowed, leading to severe trauma. Store out of reach of children and animals.

Dust is flammable

Dust created during cutting of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Protect data

Intense magnetic fields can erase data on payment cards, hard drives, and storage devices. Maintain a gap of at least 10 cm.

Impact on smartphones

An intense magnetic field interferes with the functioning of compasses in phones and GPS navigation. Maintain magnets near a device to prevent breaking the sensors.

Demagnetization risk

Regular neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. The loss of strength is permanent.

Bone fractures

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

Warning! Want to know more? Check our post: Why are neodymium magnets dangerous?

MW 25x5 / N38AH - cylindrical magnet

Detailed specification - MW 25x5 / N38AH - cylindrical magnet

Magnetic properties of material N38AH

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the assembly - report

Table 1: Static pull force (pull vs gap) - power drop MW 25x5 / N38AH

Table 2: Slippage hold (wall) MW 25x5 / N38AH

Table 3: Vertical assembly (shearing) - vertical pull MW 25x5 / N38AH

Table 4: Material efficiency (saturation) - sheet metal selection MW 25x5 / N38AH

Table 5: Working in heat (stability) - resistance threshold MW 25x5 / N38AH

Table 6: Magnet-Magnet interaction (attraction) - field range MW 25x5 / N38AH

Table 7: Safety (HSE) (electronics) - precautionary measures MW 25x5 / N38AH

Table 8: Impact energy (cracking risk) - warning MW 25x5 / N38AH

Table 9: Corrosion resistance MW 25x5 / N38AH

Table 10: Construction data (Flux) MW 25x5 / N38AH

Table 11: Hydrostatics and buoyancy MW 25x5 / N38AH

1. Shear force

2. Efficiency vs thickness

3. Power loss vs temp

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

Elemental analysis

Sustainability

Force (pull)

Magnetic Induction

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Pros and cons of neodymium magnets.

Benefits

Limitations

Pull force analysis

Highest magnetic holding force – what it depends on?

Lifting capacity in practice – influencing factors

Warnings

Magnets are brittle

Health Danger

Allergy Warning

Powerful field

Product not for children

Dust is flammable

Protect data

Impact on smartphones

Demagnetization risk

Bone fractures

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - power drop
MW 25x5 / N38AH

Table 2: Slippage hold (wall)
MW 25x5 / N38AH

Table 3: Vertical assembly (shearing) - vertical pull
MW 25x5 / N38AH

Table 4: Material efficiency (saturation) - sheet metal selection
MW 25x5 / N38AH

Table 5: Working in heat (stability) - resistance threshold
MW 25x5 / N38AH

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 25x5 / N38AH

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 25x5 / N38AH

Table 8: Impact energy (cracking risk) - warning
MW 25x5 / N38AH

Table 9: Corrosion resistance
MW 25x5 / N38AH

Table 10: Construction data (Flux)
MW 25x5 / N38AH

Table 11: Hydrostatics and buoyancy
MW 25x5 / N38AH