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MW 40x30 / 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 010068

GTIN/EAN: 5906301810674

5.00

Diameter Ø

40 mm [±0,1 mm]

Height

30 mm [±0,1 mm]

Weight

282.74 g

Magnetization Direction

→ diametrical

Load capacity

54.73 kg / 536.88 N

Magnetic Induction

515.71 mT / 5157 Gs

Coating

[NiCuNi] Nickel

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Technical data of the product - MW 40x30 / N38 - cylindrical magnet

Specification / characteristics - MW 40x30 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010068
GTIN/EAN	5906301810674
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	40 mm [±0,1 mm]
Height	30 mm [±0,1 mm]
Weight	282.74 g
Magnetization Direction	→ diametrical
Load capacity ~ ?	54.73 kg / 536.88 N
Magnetic Induction ~ ?	515.71 mT / 5157 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 40x30 / 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 simulation of the assembly - data

Presented data constitute the result of a mathematical calculation. Results rely on algorithms for the class Nd₂Fe₁₄B. Actual parameters may differ from theoretical values. Use these calculations as a supplementary guide during assembly planning.

Table 1: Static pull force (pull vs gap) - characteristics
MW 40x30 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5156 Gs 515.6 mT	54.73 kg / 120.66 pounds 54730.0 g / 536.9 N	crushing
1 mm	4900 Gs 490.0 mT	49.43 kg / 108.98 pounds 49432.0 g / 484.9 N	crushing
2 mm	4641 Gs 464.1 mT	44.33 kg / 97.74 pounds 44334.0 g / 434.9 N	crushing
3 mm	4383 Gs 438.3 mT	39.54 kg / 87.17 pounds 39538.7 g / 387.9 N	crushing
5 mm	3879 Gs 387.9 mT	30.98 kg / 68.30 pounds 30981.5 g / 303.9 N	crushing
10 mm	2773 Gs 277.3 mT	15.83 kg / 34.89 pounds 15826.7 g / 155.3 N	crushing
15 mm	1946 Gs 194.6 mT	7.79 kg / 17.18 pounds 7792.9 g / 76.4 N	strong
20 mm	1372 Gs 137.2 mT	3.88 kg / 8.55 pounds 3877.9 g / 38.0 N	strong
30 mm	723 Gs 72.3 mT	1.08 kg / 2.37 pounds 1076.5 g / 10.6 N	weak grip
50 mm	258 Gs 25.8 mT	0.14 kg / 0.30 pounds 137.4 g / 1.3 N	weak grip

Pulling power weakens sharply with every mm of distance. Remember that every additional insulation layer (e.g., contamination, varnish, dust) significantly weakens the grip. Neodymiums work strongest at the point of direct contact; gap nullifies the force. See how quickly the parameters drop, when the magnet does not adhere tightly to the steel surface. When planning the assembly, eliminate additional spacers.

Table 2: Slippage capacity (vertical surface)
MW 40x30 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	10.95 kg / 24.13 pounds 10946.0 g / 107.4 N
1 mm	Stal (~0.2)	9.89 kg / 21.79 pounds 9886.0 g / 97.0 N
2 mm	Stal (~0.2)	8.87 kg / 19.55 pounds 8866.0 g / 87.0 N
3 mm	Stal (~0.2)	7.91 kg / 17.43 pounds 7908.0 g / 77.6 N
5 mm	Stal (~0.2)	6.20 kg / 13.66 pounds 6196.0 g / 60.8 N
10 mm	Stal (~0.2)	3.17 kg / 6.98 pounds 3166.0 g / 31.1 N
15 mm	Stal (~0.2)	1.56 kg / 3.43 pounds 1558.0 g / 15.3 N
20 mm	Stal (~0.2)	0.78 kg / 1.71 pounds 776.0 g / 7.6 N
30 mm	Stal (~0.2)	0.22 kg / 0.48 pounds 216.0 g / 2.1 N
50 mm	Stal (~0.2)	0.03 kg / 0.06 pounds 28.0 g / 0.3 N

The following data defines the approximate holding capacity sufficient to start the downward movement of the magnet down along a vertical steel plate (considering standard friction). This value is a function of the gap size between the magnet and the metal.

Table 3: Wall mounting (sliding) - vertical pull
MW 40x30 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	16.42 kg / 36.20 pounds 16419.0 g / 161.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	10.95 kg / 24.13 pounds 10946.0 g / 107.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	5.47 kg / 12.07 pounds 5473.0 g / 53.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	27.37 kg / 60.33 pounds 27365.0 g / 268.5 N

When hanging a magnet on a upright wall (e.g., a car body), it will maintain barely about 20%-30% of its nominal power. Gravitational force and a low friction coefficient cause that magnets move down easier than they pop off the substrate. Want to create a wall mount? Consider that the sliding force is noticeably lower than the perpendicular breakaway force. On a painted metal, the magnet will slide down under a much lighter load. Application of an anti-slip coating can drastically increase the grip.

Table 4: Steel thickness (saturation) - power losses
MW 40x30 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	1.82 kg / 4.02 pounds 1824.3 g / 17.9 N
1 mm	8%	4.56 kg / 10.05 pounds 4560.8 g / 44.7 N
2 mm	17%	9.12 kg / 20.11 pounds 9121.7 g / 89.5 N
3 mm	25%	13.68 kg / 30.16 pounds 13682.5 g / 134.2 N
5 mm	42%	22.80 kg / 50.27 pounds 22804.2 g / 223.7 N
10 mm	83%	45.61 kg / 100.55 pounds 45608.3 g / 447.4 N
11 mm	92%	50.17 kg / 110.60 pounds 50169.2 g / 492.2 N
12 mm	100%	54.73 kg / 120.66 pounds 54730.0 g / 536.9 N

A too thin steel is unable to focus the full magnetic flux, which squanders power of the holder. If you mount a strong magnet to a weak sheet, the field will penetrate right through and the pull force will drop sharply. To squeeze full efficiency of this magnet's potential, you need a suitably thick backing of metal. The material oversaturation causes that on sheet metal structures (e.g., car bodies), the magnet holds weaker. We recommend selecting the steel thickness according to the table below.

Table 5: Thermal stability (stability) - power drop
MW 40x30 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	54.73 kg / 120.66 pounds 54730.0 g / 536.9 N	OK
40 °C	-2.2%	53.53 kg / 118.00 pounds 53525.9 g / 525.1 N	OK
60 °C	-4.4%	52.32 kg / 115.35 pounds 52321.9 g / 513.3 N	OK
80 °C	-6.6%	51.12 kg / 112.70 pounds 51117.8 g / 501.5 N
100 °C	-28.8%	38.97 kg / 85.91 pounds 38967.8 g / 382.3 N

Standard neodymium magnets change their properties power after exceeding the maximum temperature. Protect against heat – high temperature can permanently damage this product. As the temperature rises, the magnet's power momentarily decreases. Do not use this product in hot environments exceeding its safe range. Ignoring the limit will result in destruction of magnetism.

*Technical advisory: Thermal stability is determined by both grade, but also on the magnet's shape. Low-profile magnets (pancake types) may lose charge permanently at lower temperatures than taller cylinders. The danger warning in the table signals a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 40x30 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	205.97 kg / 454.08 pounds 5 879 Gs	30.89 kg / 68.11 pounds 30895 g / 303.1 N	N/A
1 mm	195.99 kg / 432.09 pounds 10 060 Gs	29.40 kg / 64.81 pounds 29399 g / 288.4 N	176.39 kg / 388.88 pounds ~0 Gs
2 mm	186.03 kg / 410.12 pounds 9 800 Gs	27.90 kg / 61.52 pounds 27904 g / 273.7 N	167.42 kg / 369.11 pounds ~0 Gs
3 mm	176.30 kg / 388.68 pounds 9 541 Gs	26.45 kg / 58.30 pounds 26445 g / 259.4 N	158.67 kg / 349.81 pounds ~0 Gs
5 mm	157.67 kg / 347.60 pounds 9 023 Gs	23.65 kg / 52.14 pounds 23650 g / 232.0 N	141.90 kg / 312.84 pounds ~0 Gs
10 mm	116.59 kg / 257.04 pounds 7 759 Gs	17.49 kg / 38.56 pounds 17489 g / 171.6 N	104.93 kg / 231.34 pounds ~0 Gs
20 mm	59.56 kg / 131.31 pounds 5 545 Gs	8.93 kg / 19.70 pounds 8934 g / 87.6 N	53.60 kg / 118.18 pounds ~0 Gs
50 mm	7.52 kg / 16.58 pounds 1 971 Gs	1.13 kg / 2.49 pounds 1128 g / 11.1 N	6.77 kg / 14.92 pounds ~0 Gs
60 mm	4.05 kg / 8.93 pounds 1 446 Gs	0.61 kg / 1.34 pounds 608 g / 6.0 N	3.65 kg / 8.04 pounds ~0 Gs
70 mm	2.28 kg / 5.03 pounds 1 085 Gs	0.34 kg / 0.75 pounds 342 g / 3.4 N	2.05 kg / 4.53 pounds ~0 Gs
80 mm	1.34 kg / 2.96 pounds 832 Gs	0.20 kg / 0.44 pounds 201 g / 2.0 N	1.21 kg / 2.66 pounds ~0 Gs
90 mm	0.82 kg / 1.80 pounds 650 Gs	0.12 kg / 0.27 pounds 123 g / 1.2 N	0.74 kg / 1.62 pounds ~0 Gs
100 mm	0.52 kg / 1.14 pounds 517 Gs	0.08 kg / 0.17 pounds 78 g / 0.8 N	0.47 kg / 1.03 pounds ~0 Gs

Two magnets interact from a much further distance than a neodymium and metal combination. The connection of magnet-to-magnet creates a more powerful interaction and a larger range of performance. Planning to create a strong closure? Utilize two neodymiums instead of one magnet and a steel. Exercise caution that when bringing together two magnets, the impact force is huge. The repulsion force is slightly lower than the connection force, but still large.
*The magnetic induction for N-N configuration drops to ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Attention: Calculations demonstrate friction force of dual same magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - warnings
MW 40x30 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	23.5 cm
Hearing aid	10 Gs (1.0 mT)	18.0 cm
Mechanical watch	20 Gs (2.0 mT)	14.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	11.0 cm
Remote	50 Gs (5.0 mT)	10.0 cm
Payment card	400 Gs (40.0 mT)	4.5 cm
HDD hard drive	600 Gs (60.0 mT)	3.5 cm

A strong magnetic field poses a large risk to IT equipment and medical implants. These magnets generate a flux that disrupts operation of digital equipment. Remember: the unseen radiation acts through matter and housings. Exceptional care must be taken by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, remotes, membranes, and displays. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - collision effects
MW 40x30 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	16.37 km/h (4.55 m/s)	2.92 J
30 mm	24.60 km/h (6.83 m/s)	6.60 J
50 mm	31.42 km/h (8.73 m/s)	10.77 J
100 mm	44.37 km/h (12.33 m/s)	21.48 J

Magnetic elements are prone to chipping – a violent impact against metal risks their cracking. Watch the impact speed – 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 mounting so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear safety glasses when working with large magnets.

Table 9: Coating parameters (durability)
MW 40x30 / 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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Note the thickness of the protective layer.

Table 10: Construction data (P_c)
MW 40x30 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	65 488 Mx	654.9 µWb
P_c Coefficient	0.76	High (Stable)

Total magnetic flux passing through the pole surface. Key data when building generators as well as sensors. P_c value defines the magnet's operating point.

Table 11: Submerged application
MW 40x30 / N38

Environment	Effective steel pull	Effect
Air (land)	54.73 kg	Standard
Water (riverbed)	62.67 kg (+7.94 kg buoyancy gain)	+14.5%

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

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. Wall mount (shear)

*Warning: On a vertical surface, the magnet retains only a fraction of its max power.

2. Plate thickness effect

*Thin metal sheet (e.g. computer case) drastically reduces the holding force.

3. Power loss vs temp

*For standard magnets, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.76

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.

Engineering data and GPSR

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: 010068-2026

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The presented product is a very strong rod magnet, composed of modern NdFeB material, which, at dimensions of Ø40x30 mm, guarantees maximum efficiency. The MW 40x30 / N38 component is characterized by a tolerance of ±0.1mm and professional build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 54.73 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 shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

It finds application in modeling, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 536.88 N with a weight of only 282.74 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.

Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 40.1 mm) using two-component 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.

Magnets NdFeB grade N38 are suitable for the majority of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø40x30), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

This model is characterized by dimensions Ø40x30 mm, which, at a weight of 282.74 g, makes it an element with high magnetic energy density. The value of 536.88 N means that the magnet is capable of holding a weight many times exceeding its own mass of 282.74 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 30 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 diametrically if your project requires it.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Advantages

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

They have stable power, and over around 10 years their performance decreases symbolically – ~1% (according to theory),
They have excellent resistance to magnetic field loss due to external magnetic sources,
Thanks to the metallic finish, the surface of nickel, gold-plated, or silver gives an modern appearance,
Magnetic induction on the top side of the magnet remains exceptional,
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 the possibility of accurate forming and adaptation to unique needs, magnetic components can be produced in a variety of forms and dimensions, which makes them more universal,
Versatile presence in innovative solutions – they are commonly used in magnetic memories, electromotive mechanisms, advanced medical instruments, and modern systems.
Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Disadvantages

Characteristics of disadvantages of neodymium magnets and proposals for their use:

To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
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
Limited possibility of creating nuts in the magnet and complex shapes - recommended is a housing - magnet mounting.
Potential hazard to health – tiny shards of magnets can be dangerous, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Maximum magnetic pulling force – what it depends on?

The load parameter shown represents the peak performance, recorded under laboratory conditions, meaning:

using a base made of mild steel, acting as a magnetic yoke
possessing a massiveness of at least 10 mm to ensure full flux closure
with an ground contact surface
under conditions of ideal adhesion (surface-to-surface)
under perpendicular force vector (90-degree angle)
at standard ambient temperature

Impact of factors on magnetic holding capacity in practice

Please note that the magnet holding may be lower influenced by elements below, starting with the most relevant:

Clearance – existence of any layer (rust, tape, air) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
Element thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
Plate material – mild steel gives the best results. Alloy admixtures reduce magnetic properties and lifting capacity.
Surface structure – the more even the surface, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
Operating temperature – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under perpendicular forces, whereas under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate reduces the load capacity.

Warnings

Health Danger

For implant holders: Strong magnetic fields affect electronics. Keep minimum 30 cm distance or ask another person to handle the magnets.

Serious injuries

Protect your hands. Two powerful magnets will snap together instantly with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!

Threat to navigation

A powerful magnetic field negatively affects the operation of magnetometers in phones and GPS navigation. Do not bring magnets close to a device to avoid breaking the sensors.

Heat warning

Keep cool. Neodymium magnets are susceptible to temperature. If you require operation above 80°C, inquire about HT versions (H, SH, UH).

Danger to the youngest

Absolutely keep magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are fatal.

Immense force

Be careful. Neodymium magnets act from a long distance and snap with massive power, often faster than you can move away.

Shattering risk

NdFeB magnets are sintered ceramics, meaning they are prone to chipping. Impact of two magnets will cause them shattering into shards.

Mechanical processing

Combustion risk: Rare earth powder is highly flammable. Avoid machining magnets in home conditions as this may cause fire.

Nickel allergy

Some people experience a sensitization to nickel, which is the standard coating for neodymium magnets. Extended handling may cause skin redness. It is best to wear safety gloves.

Cards and drives

Intense magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

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

MW 40x30 / N38 - cylindrical magnet

Technical data of the product - MW 40x30 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering simulation of the assembly - data

Table 1: Static pull force (pull vs gap) - characteristics MW 40x30 / N38

Table 2: Slippage capacity (vertical surface) MW 40x30 / N38

Table 3: Wall mounting (sliding) - vertical pull MW 40x30 / N38

Table 4: Steel thickness (saturation) - power losses MW 40x30 / N38

Table 5: Thermal stability (stability) - power drop MW 40x30 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MW 40x30 / N38

Table 7: Protective zones (implants) - warnings MW 40x30 / N38

Table 8: Collisions (kinetic energy) - collision effects MW 40x30 / N38

Table 9: Coating parameters (durability) MW 40x30 / N38

Table 10: Construction data (Pc) MW 40x30 / N38

Table 11: Submerged application MW 40x30 / N38

1. Wall mount (shear)

2. Plate thickness effect

3. Power loss vs temp

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

Chemical composition

Ecology and recycling (GPSR)

Force (pull)

Field Strength

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Advantages as well as disadvantages of Nd2Fe14B magnets.

Advantages

Disadvantages

Lifting parameters

Maximum magnetic pulling force – what it depends on?

Impact of factors on magnetic holding capacity in practice

Warnings

Health Danger

Serious injuries

Threat to navigation

Heat warning

Danger to the youngest

Immense force

Shattering risk

Mechanical processing

Nickel allergy

Cards and drives

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - characteristics
MW 40x30 / N38

Table 2: Slippage capacity (vertical surface)
MW 40x30 / N38

Table 3: Wall mounting (sliding) - vertical pull
MW 40x30 / N38

Table 4: Steel thickness (saturation) - power losses
MW 40x30 / N38

Table 5: Thermal stability (stability) - power drop
MW 40x30 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 40x30 / N38

Table 7: Protective zones (implants) - warnings
MW 40x30 / N38

Table 8: Collisions (kinetic energy) - collision effects
MW 40x30 / N38

Table 9: Coating parameters (durability)
MW 40x30 / N38

Table 10: Construction data (P_c)
MW 40x30 / N38

Table 11: Submerged application
MW 40x30 / N38

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.