Product available Ships tomorrow

MW 40x8 / 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 010069

GTIN/EAN: 5906301810681

5.00

Diameter Ø

40 mm [±0,1 mm]

Height

8 mm [±0,1 mm]

Weight

75.4 g

Magnetization Direction

↑ axial

Load capacity

20.43 kg / 200.39 N

Magnetic Induction

230.22 mT / 2302 Gs

Coating

[NiCuNi] Nickel

technical specifications »

31.27 ZŁ with VAT / pcs + price for transport

25.42 ZŁ net + 23% VAT / pcs

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Technical - MW 40x8 / N38 - cylindrical magnet

Specification / characteristics - MW 40x8 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010069
GTIN/EAN	5906301810681
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	8 mm [±0,1 mm]
Weight	75.4 g
Magnetization Direction	↑ axial
Load capacity ~ ?	20.43 kg / 200.39 N
Magnetic Induction ~ ?	230.22 mT / 2302 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 40x8 / 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 represent the direct effect of a physical simulation. Results are based on algorithms for the class Nd₂Fe₁₄B. Operational parameters may differ. Treat these calculations as a supplementary guide when designing systems.

Table 1: Static force (pull vs distance) - interaction chart
MW 40x8 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2302 Gs 230.2 mT	20.43 kg / 45.04 pounds 20430.0 g / 200.4 N	crushing
1 mm	2235 Gs 223.5 mT	19.25 kg / 42.44 pounds 19252.0 g / 188.9 N	crushing
2 mm	2156 Gs 215.6 mT	17.92 kg / 39.50 pounds 17917.4 g / 175.8 N	crushing
3 mm	2068 Gs 206.8 mT	16.49 kg / 36.36 pounds 16490.6 g / 161.8 N	crushing
5 mm	1875 Gs 187.5 mT	13.56 kg / 29.89 pounds 13556.7 g / 133.0 N	crushing
10 mm	1375 Gs 137.5 mT	7.29 kg / 16.07 pounds 7287.4 g / 71.5 N	warning
15 mm	959 Gs 95.9 mT	3.54 kg / 7.81 pounds 3542.3 g / 34.8 N	warning
20 mm	661 Gs 66.1 mT	1.68 kg / 3.71 pounds 1684.9 g / 16.5 N	safe
30 mm	328 Gs 32.8 mT	0.41 kg / 0.91 pounds 414.2 g / 4.1 N	safe
50 mm	105 Gs 10.5 mT	0.04 kg / 0.09 pounds 42.3 g / 0.4 N	safe

Grip strength drops sharply with every subsequent millimeter of spacing. Note that even a microscopic distance (e.g., dirt, varnish, dust) noticeably reduces the pull force. Neodymiums hold optimally during direct contact; air break nullifies the force. Analyze how rapidly the load capacity drop, when the product does not touch flatly to the steel surface. When designing the mounting, avoid redundant distances.

Table 2: Sliding capacity (vertical surface)
MW 40x8 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	4.09 kg / 9.01 pounds 4086.0 g / 40.1 N
1 mm	Stal (~0.2)	3.85 kg / 8.49 pounds 3850.0 g / 37.8 N
2 mm	Stal (~0.2)	3.58 kg / 7.90 pounds 3584.0 g / 35.2 N
3 mm	Stal (~0.2)	3.30 kg / 7.27 pounds 3298.0 g / 32.4 N
5 mm	Stal (~0.2)	2.71 kg / 5.98 pounds 2712.0 g / 26.6 N
10 mm	Stal (~0.2)	1.46 kg / 3.21 pounds 1458.0 g / 14.3 N
15 mm	Stal (~0.2)	0.71 kg / 1.56 pounds 708.0 g / 6.9 N
20 mm	Stal (~0.2)	0.34 kg / 0.74 pounds 336.0 g / 3.3 N
30 mm	Stal (~0.2)	0.08 kg / 0.18 pounds 82.0 g / 0.8 N
50 mm	Stal (~0.2)	0.01 kg / 0.02 pounds 8.0 g / 0.1 N

The following data defines the approximate holding capacity sufficient to initiate the downward movement of the magnet vertically against a upright steel plate (considering standard friction coefficient). This value depends on the separation distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 40x8 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	6.13 kg / 13.51 pounds 6129.0 g / 60.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	4.09 kg / 9.01 pounds 4086.0 g / 40.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	2.04 kg / 4.50 pounds 2043.0 g / 20.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	10.22 kg / 22.52 pounds 10215.0 g / 100.2 N

When hanging a holder on a upright plane (e.g., a fridge), it will only hold only about 1/5 of its nominal power. Gravity and a weak degree of grip cause that products slide down easier than they pop off the substrate. Planning a vertical fastening? Consider that the shear force is significantly lower than the maximum static pull force. On a smooth steel, the element will slide down under a significantly smaller weight. Using a rubber coating can effectively raise the stability.

Table 4: Material efficiency (substrate influence) - power losses
MW 40x8 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	1.02 kg / 2.25 pounds 1021.5 g / 10.0 N
1 mm	13%	2.55 kg / 5.63 pounds 2553.8 g / 25.1 N
2 mm	25%	5.11 kg / 11.26 pounds 5107.5 g / 50.1 N
3 mm	38%	7.66 kg / 16.89 pounds 7661.3 g / 75.2 N
5 mm	63%	12.77 kg / 28.15 pounds 12768.8 g / 125.3 N
10 mm	100%	20.43 kg / 45.04 pounds 20430.0 g / 200.4 N
11 mm	100%	20.43 kg / 45.04 pounds 20430.0 g / 200.4 N
12 mm	100%	20.43 kg / 45.04 pounds 20430.0 g / 200.4 N

A thin sheet cannot take in the entire magnetic field, which wastes potential of the holder. 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 squeeze full efficiency of this magnet's potential, you require a sufficiently solid piece of steel. The material oversaturation causes that on delicate walls (e.g., appliance housings), the magnet holds weaker. We advise picking the steel dimension according to the table below.

Table 5: Thermal stability (stability) - thermal limit
MW 40x8 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	20.43 kg / 45.04 pounds 20430.0 g / 200.4 N	OK
40 °C	-2.2%	19.98 kg / 44.05 pounds 19980.5 g / 196.0 N	OK
60 °C	-4.4%	19.53 kg / 43.06 pounds 19531.1 g / 191.6 N
80 °C	-6.6%	19.08 kg / 42.07 pounds 19081.6 g / 187.2 N
100 °C	-28.8%	14.55 kg / 32.07 pounds 14546.2 g / 142.7 N

Classic neodymiums lose strength past the thermal threshold. Protect against heat – excessive heat can permanently damage this magnet. With every degree above norm, the magnet's power momentarily drops. Refrain from using this product near heat sources exceeding its safe range. Exceeding the critical threshold will lead to irreversible degradation of magnetic properties.

*Technical advisory: Thermal stability is determined by both grade, as well as the dimension ratios. Flat magnets (pancake types) risk losing magnetic properties at lower temperatures than taller cylinders. Red status in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (attraction) - forces in the system
MW 40x8 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	41.05 kg / 90.51 pounds 3 871 Gs	6.16 kg / 13.58 pounds 6158 g / 60.4 N	N/A
1 mm	39.92 kg / 88.02 pounds 4 540 Gs	5.99 kg / 13.20 pounds 5989 g / 58.7 N	35.93 kg / 79.22 pounds ~0 Gs
2 mm	38.69 kg / 85.29 pounds 4 469 Gs	5.80 kg / 12.79 pounds 5803 g / 56.9 N	34.82 kg / 76.76 pounds ~0 Gs
3 mm	37.38 kg / 82.40 pounds 4 393 Gs	5.61 kg / 12.36 pounds 5606 g / 55.0 N	33.64 kg / 74.16 pounds ~0 Gs
5 mm	34.59 kg / 76.25 pounds 4 226 Gs	5.19 kg / 11.44 pounds 5188 g / 50.9 N	31.13 kg / 68.63 pounds ~0 Gs
10 mm	27.24 kg / 60.06 pounds 3 750 Gs	4.09 kg / 9.01 pounds 4086 g / 40.1 N	24.52 kg / 54.05 pounds ~0 Gs
20 mm	14.64 kg / 32.28 pounds 2 750 Gs	2.20 kg / 4.84 pounds 2197 g / 21.5 N	13.18 kg / 29.06 pounds ~0 Gs
50 mm	1.65 kg / 3.63 pounds 922 Gs	0.25 kg / 0.54 pounds 247 g / 2.4 N	1.48 kg / 3.26 pounds ~0 Gs
60 mm	0.83 kg / 1.84 pounds 656 Gs	0.12 kg / 0.28 pounds 125 g / 1.2 N	0.75 kg / 1.65 pounds ~0 Gs
70 mm	0.44 kg / 0.97 pounds 477 Gs	0.07 kg / 0.15 pounds 66 g / 0.6 N	0.40 kg / 0.87 pounds ~0 Gs
80 mm	0.24 kg / 0.54 pounds 355 Gs	0.04 kg / 0.08 pounds 37 g / 0.4 N	0.22 kg / 0.49 pounds ~0 Gs
90 mm	0.14 kg / 0.31 pounds 270 Gs	0.02 kg / 0.05 pounds 21 g / 0.2 N	0.13 kg / 0.28 pounds ~0 Gs
100 mm	0.09 kg / 0.19 pounds 210 Gs	0.01 kg / 0.03 pounds 13 g / 0.1 N	0.08 kg / 0.17 pounds ~0 Gs

Two magnetic products interact from a significantly greater distance than a neodymium and metal setup. The connection of magnet-to-magnet produces a massive flux and a wider radius of operation. Planning to create a strong closure? Apply two magnets instead of a neodymium and a striker plate. Exercise caution that when connecting a pair of magnets, the collision energy is extreme. The repulsion force is marginally weaker than the connection force, but still impressive.
*The magnetic induction for N-N configuration is approximately ~0 Gs in the exact middle between the magnets (due to field cancellation).
Important: Results show friction force of dual matching neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - warnings
MW 40x8 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	15.5 cm
Hearing aid	10 Gs (1.0 mT)	12.5 cm
Timepiece	20 Gs (2.0 mT)	9.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	7.5 cm
Car key	50 Gs (5.0 mT)	7.0 cm
Payment card	400 Gs (40.0 mT)	3.0 cm
HDD hard drive	600 Gs (60.0 mT)	2.5 cm

Extremely neodym field is a large risk to IT equipment as well as pacemakers. These NdFeB products produce a field that disrupts operation of digital equipment. Notice: the unseen radiation penetrates the body and housings. Exceptional care must be exercised by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, remotes, membranes, and displays. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - collision effects
MW 40x8 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	19.96 km/h (5.54 m/s)	1.16 J
30 mm	29.12 km/h (8.09 m/s)	2.47 J
50 mm	37.17 km/h (10.32 m/s)	4.02 J
100 mm	52.50 km/h (14.58 m/s)	8.02 J

NdFeB products are delicate – a strong collision with metal risks their cracking. Pay attention to connection velocity – a magnet released freely turns into a projectile. Striking energy can destroy the magnet or injury to skin. Be sure to control the product during installation so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Wear eye protection when playing with powerful specimens.

Table 9: Corrosion resistance
MW 40x8 / 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 following table defines the conditions under which this product can be safely used. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MW 40x8 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	33 553 Mx	335.5 µWb
P_c Coefficient	0.29	Low (Flat)

Total magnetic flux emitted by the pole surface. Key data in coil applications and motors. P_c value determines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 40x8 / N38

Environment	Effective steel pull	Effect
Air (land)	20.43 kg	Standard
Water (riverbed)	23.39 kg (+2.96 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!

The magnetic field penetrates through water without any losses. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

*Note: On a vertical wall, the magnet holds just ~20% of its nominal pull.

2. Steel saturation

*Thin metal sheet (e.g. computer case) severely weakens the holding force.

3. Thermal stability

*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) = 0.29

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 and environmental data

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%

Environmental data

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: 010069-2026

Measurement Calculator

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The presented product is an exceptionally strong rod magnet, manufactured from durable NdFeB material, which, at dimensions of Ø40x8 mm, guarantees optimal power. This specific item is characterized by an accuracy of ±0.1mm and professional build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with significant force (approx. 20.43 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is perfect for building generators, advanced Hall effect sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 200.39 N with a weight of only 75.4 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.

Since our magnets have a tolerance of ±0.1mm, the best method is to glue them into holes with a slightly larger diameter (e.g., 40.1 mm) using epoxy glues. To ensure stability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most popular standard for industrial neodymium magnets, offering an optimal price-to-power ratio and operational stability. If you need the strongest magnets in the same volume (Ø40x8), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

The presented product is a neodymium magnet with precisely defined parameters: diameter 40 mm and height 8 mm. The key parameter here is the holding force amounting to approximately 20.43 kg (force ~200.39 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.

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 40 mm. 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 as well as cons of neodymium magnets.

Strengths

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

They have constant strength, and over around 10 years their performance decreases symbolically – ~1% (in testing),
They possess excellent resistance to magnetic field loss due to external magnetic sources,
The use of an metallic coating of noble metals (nickel, gold, silver) causes the element to present itself better,
They show high magnetic induction at the operating surface, making them more effective,
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...
Possibility of custom modeling and adjusting to defined conditions,
Wide application in advanced technology sectors – they are used in computer drives, electromotive mechanisms, diagnostic systems, also technologically advanced constructions.
Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Disadvantages

What to avoid - cons of neodymium magnets: tips and applications.

At very strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
Due to limitations in producing nuts and complicated shapes in magnets, we recommend using cover - magnetic mount.
Health risk resulting from small fragments of magnets are risky, when accidentally swallowed, which is particularly important in the context of child safety. Furthermore, small components of these products are able to disrupt the diagnostic process medical after entering the body.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Maximum magnetic pulling force – what it depends on?

Information about lifting capacity was defined for ideal contact conditions, assuming:

using a sheet made of high-permeability steel, serving as a circuit closing element
possessing a massiveness of minimum 10 mm to ensure full flux closure
with a plane cleaned and smooth
without any insulating layer between the magnet and steel
under perpendicular force vector (90-degree angle)
in stable room temperature

Determinants of lifting force in real conditions

In practice, the actual holding force depends on several key aspects, presented from the most important:

Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Loading method – catalog parameter refers to detachment vertically. When applying parallel force, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
Metal type – different alloys reacts the same. Alloy additives worsen the attraction effect.
Plate texture – ground elements ensure maximum contact, which improves field saturation. Uneven metal weaken the grip.
Thermal factor – hot environment reduces pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was assessed with the use of a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet and the plate reduces the holding force.

Safety rules for work with NdFeB magnets

Finger safety

Big blocks can break fingers in a fraction of a second. Do not put your hand betwixt two strong magnets.

No play value

Only for adults. Tiny parts pose a choking risk, leading to intestinal necrosis. Keep out of reach of children and animals.

Operating temperature

Avoid heat. NdFeB magnets are susceptible to temperature. If you need operation above 80°C, look for HT versions (H, SH, UH).

Allergic reactions

Nickel alert: The Ni-Cu-Ni coating contains nickel. If an allergic reaction appears, cease handling magnets and wear gloves.

Warning for heart patients

People with a heart stimulator should maintain an absolute distance from magnets. The magnetic field can disrupt the operation of the implant.

Handling rules

Handle with care. Rare earth magnets attract from a long distance and snap with massive power, often quicker than you can move away.

Fire warning

Dust produced during machining of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.

GPS Danger

Navigation devices and mobile phones are extremely susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can ruin the internal compass in your phone.

Protect data

Device Safety: Strong magnets can ruin data carriers and delicate electronics (pacemakers, hearing aids, mechanical watches).

Shattering risk

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

Security! Learn more about hazards in the article: Safety of working with magnets.

MW 40x8 / N38 - cylindrical magnet

Technical - MW 40x8 / 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 force (pull vs distance) - interaction chart MW 40x8 / N38

Table 2: Sliding capacity (vertical surface) MW 40x8 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MW 40x8 / N38

Table 4: Material efficiency (substrate influence) - power losses MW 40x8 / N38

Table 5: Thermal stability (stability) - thermal limit MW 40x8 / N38

Table 6: Two magnets (attraction) - forces in the system MW 40x8 / N38

Table 7: Protective zones (implants) - warnings MW 40x8 / N38

Table 8: Impact energy (cracking risk) - collision effects MW 40x8 / N38

Table 9: Corrosion resistance MW 40x8 / N38

Table 10: Construction data (Flux) MW 40x8 / N38

Table 11: Hydrostatics and buoyancy MW 40x8 / N38

1. Vertical hold

2. Steel saturation

3. Thermal stability

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

Elemental analysis

Environmental data

Magnet pull force

Field Strength

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Pros as well as cons of neodymium magnets.

Strengths

Disadvantages

Pull force analysis

Maximum magnetic pulling force – what it depends on?

Determinants of lifting force in real conditions

Safety rules for work with NdFeB magnets

Finger safety

No play value

Operating temperature

Allergic reactions

Warning for heart patients

Handling rules

Fire warning

GPS Danger

Protect data

Shattering risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - interaction chart
MW 40x8 / N38

Table 2: Sliding capacity (vertical surface)
MW 40x8 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 40x8 / N38

Table 4: Material efficiency (substrate influence) - power losses
MW 40x8 / N38

Table 5: Thermal stability (stability) - thermal limit
MW 40x8 / N38

Table 6: Two magnets (attraction) - forces in the system
MW 40x8 / N38

Table 7: Protective zones (implants) - warnings
MW 40x8 / N38

Table 8: Impact energy (cracking risk) - collision effects
MW 40x8 / N38

Table 9: Corrosion resistance
MW 40x8 / N38

Table 10: Construction data (Flux)
MW 40x8 / N38

Table 11: Hydrostatics and buoyancy
MW 40x8 / N38