Product available Ships tomorrow

MW 4x8 / 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 010079

GTIN/EAN: 5906301810780

5.00

Diameter Ø

4 mm [±0,1 mm]

Height

8 mm [±0,1 mm]

Weight

0.75 g

Magnetization Direction

↑ axial

Load capacity

0.35 kg / 3.48 N

Magnetic Induction

599.59 mT / 5996 Gs

Coating

[NiCuNi] Nickel

see technical specifications »

0.701 ZŁ with VAT / pcs + price for transport

0.570 ZŁ net + 23% VAT / pcs

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Technical - MW 4x8 / N38 - cylindrical magnet

Specification / characteristics - MW 4x8 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010079
GTIN/EAN	5906301810780
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	4 mm [±0,1 mm]
Height	8 mm [±0,1 mm]
Weight	0.75 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.35 kg / 3.48 N
Magnetic Induction ~ ?	599.59 mT / 5996 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 4x8 / 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 analysis of the magnet - technical parameters

Presented information represent the result of a engineering analysis. Values are based on models for the class Nd₂Fe₁₄B. Real-world performance may differ. Use these calculations as a supplementary guide when designing systems.

Table 1: Static pull force (pull vs gap) - characteristics
MW 4x8 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5984 Gs 598.4 mT	0.35 kg / 0.77 LBS 350.0 g / 3.4 N	weak grip
1 mm	3280 Gs 328.0 mT	0.11 kg / 0.23 LBS 105.1 g / 1.0 N	weak grip
2 mm	1696 Gs 169.6 mT	0.03 kg / 0.06 LBS 28.1 g / 0.3 N	weak grip
3 mm	941 Gs 94.1 mT	0.01 kg / 0.02 LBS 8.7 g / 0.1 N	weak grip
5 mm	371 Gs 37.1 mT	0.00 kg / 0.00 LBS 1.3 g / 0.0 N	weak grip
10 mm	82 Gs 8.2 mT	0.00 kg / 0.00 LBS 0.1 g / 0.0 N	weak grip
15 mm	31 Gs 3.1 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip
20 mm	15 Gs 1.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip
30 mm	5 Gs 0.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip
50 mm	1 Gs 0.1 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip

Grip strength drops drastically with every subsequent millimeter of spacing. Remember that even a very thin break (e.g., contamination, paint, dust) significantly reduces the pull force. Neodymiums operate strongest during direct contact; air break drastically cuts the force. Observe how flashily the parameters fall, when the product does not adhere flatly to the steel surface. When planning the assembly, avoid additional spacers.

Table 2: Shear capacity (vertical surface)
MW 4x8 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.07 kg / 0.15 LBS 70.0 g / 0.7 N
1 mm	Stal (~0.2)	0.02 kg / 0.05 LBS 22.0 g / 0.2 N
2 mm	Stal (~0.2)	0.01 kg / 0.01 LBS 6.0 g / 0.1 N
3 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

The following data indicates the approximate weight limit needed to cause the sliding of the magnet vertically along a vertical steel plate (considering standard friction). This value is a function of the air gap between the magnet and the surface.

Table 3: Wall mounting (sliding) - vertical pull
MW 4x8 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.11 kg / 0.23 LBS 105.0 g / 1.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.07 kg / 0.15 LBS 70.0 g / 0.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.03 kg / 0.08 LBS 35.0 g / 0.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.18 kg / 0.39 LBS 175.0 g / 1.7 N

When placing a element on a upright wall (e.g., a fridge), it you can count on just approx. 20%-30% of nominal attraction strength. Gravitational force and a weak degree of grip cause that products slide down faster than they pop off the substrate. Planning a hanger? Remember that the sliding force is much weaker than the perpendicular breakaway force. On a slippery surface, the magnet will slip down under a significantly smaller weight. Application of an anti-slip layer can drastically raise the stability.

Table 4: Steel thickness (substrate influence) - power losses
MW 4x8 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.03 kg / 0.08 LBS 35.0 g / 0.3 N
1 mm	25%	0.09 kg / 0.19 LBS 87.5 g / 0.9 N
2 mm	50%	0.18 kg / 0.39 LBS 175.0 g / 1.7 N
3 mm	75%	0.26 kg / 0.58 LBS 262.5 g / 2.6 N
5 mm	100%	0.35 kg / 0.77 LBS 350.0 g / 3.4 N
10 mm	100%	0.35 kg / 0.77 LBS 350.0 g / 3.4 N
11 mm	100%	0.35 kg / 0.77 LBS 350.0 g / 3.4 N
12 mm	100%	0.35 kg / 0.77 LBS 350.0 g / 3.4 N

A thin sheet is incapable of absorb the full magnetic flux, which wastes potential of the magnet. If you install a neodymium to a too thin substrate, the field will penetrate right through and the attraction force will be weaker. To achieve 100% of this neodymium's power, you need a suitably thick piece of metal. The saturation effect causes that on thin elements (e.g., car bodies), the holder works worse. We suggest choosing the steel dimension based on the following data.

Table 5: Thermal resistance (stability) - resistance threshold
MW 4x8 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.35 kg / 0.77 LBS 350.0 g / 3.4 N	OK
40 °C	-2.2%	0.34 kg / 0.75 LBS 342.3 g / 3.4 N	OK
60 °C	-4.4%	0.33 kg / 0.74 LBS 334.6 g / 3.3 N	OK
80 °C	-6.6%	0.33 kg / 0.72 LBS 326.9 g / 3.2 N
100 °C	-28.8%	0.25 kg / 0.55 LBS 249.2 g / 2.4 N

Ordinary NdFeB products irreversibly lose strength past the thermal threshold. Avoid high temperatures – heat can irreversibly damage this magnet. With increasing heat, the magnet's capacity briefly lowers. Avoid using this magnet near heat sources exceeding its safe range. Ignoring the limit will cause irreversible degradation of magnetism.

*Technical advisory: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (low Pc) are more susceptible to demagnetization at lower temperatures compared to rod magnets. The danger warning in the table signals a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 4x8 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.77 kg / 6.12 LBS 6 121 Gs	0.42 kg / 0.92 LBS 416 g / 4.1 N	N/A
1 mm	1.59 kg / 3.51 LBS 9 063 Gs	0.24 kg / 0.53 LBS 239 g / 2.3 N	1.43 kg / 3.16 LBS ~0 Gs
2 mm	0.83 kg / 1.84 LBS 6 559 Gs	0.12 kg / 0.28 LBS 125 g / 1.2 N	0.75 kg / 1.65 LBS ~0 Gs
3 mm	0.43 kg / 0.94 LBS 4 694 Gs	0.06 kg / 0.14 LBS 64 g / 0.6 N	0.38 kg / 0.85 LBS ~0 Gs
5 mm	0.12 kg / 0.27 LBS 2 498 Gs	0.02 kg / 0.04 LBS 18 g / 0.2 N	0.11 kg / 0.24 LBS ~0 Gs
10 mm	0.01 kg / 0.02 LBS 743 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.02 LBS ~0 Gs
20 mm	0.00 kg / 0.00 LBS 165 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 17 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
60 mm	0.00 kg / 0.00 LBS 10 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
70 mm	0.00 kg / 0.00 LBS 7 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
80 mm	0.00 kg / 0.00 LBS 5 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
90 mm	0.00 kg / 0.00 LBS 3 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
100 mm	0.00 kg / 0.00 LBS 3 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnetic products attract each other 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 larger range of action. Want to build a powerful holder? Utilize two neodymiums instead of one magnet and a steel. Be careful that when connecting a pair of magnets, the collision energy is huge. The levitation is a bit weaker than the connection force, but still large.
*Flux density between like poles drops to ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).
Note: Figures demonstrate sliding force of a pair of identical magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - precautionary measures
MW 4x8 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	3.5 cm
Hearing aid	10 Gs (1.0 mT)	2.5 cm
Mechanical watch	20 Gs (2.0 mT)	2.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	1.5 cm
Car key	50 Gs (5.0 mT)	1.5 cm
Payment card	400 Gs (40.0 mT)	0.5 cm
HDD hard drive	600 Gs (60.0 mT)	0.5 cm

Powerful magnet radiation poses a large risk to electronics and medical implants. These magnets generate a flux that prevents correct functioning of digital equipment. Be aware: the unseen radiation passes through tissues and housings. Increased vigilance must be exercised by people with cochlear implants and insulin pumps. The risk also applies to: automatic timepieces, remotes, membranes, and displays. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - collision effects
MW 4x8 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	21.79 km/h (6.05 m/s)	0.01 J
30 mm	37.74 km/h (10.48 m/s)	0.04 J
50 mm	48.72 km/h (13.53 m/s)	0.07 J
100 mm	68.89 km/h (19.14 m/s)	0.14 J

NdFeB products are very brittle – a violent impact against metal causes immediate chipping. Control the attraction moment – a neodymium left loose speeds with massive force. Impact energy can trigger coating fragments or dangerous crushing to fingers. Always hold the magnet during mounting so it doesn't hit violently against the metal. A collision at high speed means shattering of the neodymium. Use safety goggles when working with large magnets.

Table 9: Coating parameters (durability)
MW 4x8 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MW 4x8 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	836 Mx	8.4 µWb
P_c Coefficient	1.21	High (Stable)

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

Table 11: Submerged application
MW 4x8 / N38

Environment	Effective steel pull	Effect
Air (land)	0.35 kg	Standard
Water (riverbed)	0.40 kg (+0.05 kg buoyancy gain)	+14.5%

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

Water displaces steel, making heavy objects slightly lighter. However, remember the water resistance when pulling the rope quickly.

1. Shear force

*Caution: On a vertical wall, the magnet retains merely a fraction of its max power.

2. Steel thickness impact

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

3. Power loss vs temp

*For N38 material, 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) = 1.21

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical specification and ecology

Chemical composition

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

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: 010079-2026

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This product is a very strong cylinder magnet, manufactured from advanced NdFeB material, which, at dimensions of Ø4x8 mm, guarantees optimal power. The MW 4x8 / N38 component is characterized by high dimensional repeatability and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 0.35 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating secures it against corrosion in standard 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 high power of 3.48 N with a weight of only 0.75 g, this rod is indispensable in electronics and wherever every gram matters.

Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 4.1 mm) using epoxy glues. To ensure stability in industry, specialized industrial adhesives are used, which are safe for nickel 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 (Ø4x8), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 4 mm and height 8 mm. The key parameter here is the lifting capacity amounting to approximately 0.35 kg (force ~3.48 N), which, with such defined dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 8 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 and cons of Nd₂Fe₁₄B magnets.

Advantages

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

They have stable power, and over around ten years their performance decreases symbolically – ~1% (in testing),
They show high resistance to demagnetization induced by external magnetic fields,
A magnet with a shiny silver surface is more attractive,
They are known for high magnetic induction at the operating surface, which improves attraction properties,
Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
Due to the option of accurate shaping and customization to individualized needs, neodymium magnets can be created in a wide range of forms and dimensions, which amplifies use scope,
Universal use in future technologies – they find application in data components, electric drive systems, advanced medical instruments, as well as industrial machines.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which makes them useful in miniature devices

Disadvantages

Disadvantages of NdFeB magnets:

To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Magnets exposed to a humid environment can rust. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
Due to limitations in realizing threads and complex shapes in magnets, we propose using cover - magnetic holder.
Possible danger to health – tiny shards of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child safety. It is also worth noting that small elements of these products are able to disrupt the diagnostic process medical in case of swallowing.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Maximum lifting capacity of the magnet – what affects it?

Breakaway force is the result of a measurement for ideal contact conditions, including:

using a base made of low-carbon steel, acting as a circuit closing element
possessing a massiveness of min. 10 mm to avoid saturation
with a plane cleaned and smooth
without the slightest insulating layer between the magnet and steel
for force applied at a right angle (in the magnet axis)
at temperature room level

Lifting capacity in real conditions – factors

In real-world applications, the actual holding force is determined by several key aspects, listed from most significant:

Air gap (betwixt the magnet and the plate), because even a tiny clearance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
Steel grade – the best choice is high-permeability steel. Cast iron may attract less.
Base smoothness – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
Thermal factor – high temperature reduces pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was determined with the use of a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, in contrast under shearing force the load capacity is reduced by as much as fivefold. In addition, even a slight gap between the magnet and the plate decreases the load capacity.

H&S for magnets

Nickel allergy

Certain individuals have a contact allergy to Ni, which is the typical protective layer for NdFeB magnets. Extended handling might lead to an allergic reaction. It is best to use protective gloves.

Flammability

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

Pacemakers

Life threat: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Magnetic interference

Remember: rare earth magnets generate a field that disrupts precision electronics. Maintain a safe distance from your mobile, tablet, and GPS.

Magnetic media

Data protection: Strong magnets can damage data carriers and sensitive devices (heart implants, hearing aids, timepieces).

Bone fractures

Danger of trauma: The pulling power is so immense that it can result in hematomas, crushing, and even bone fractures. Use thick gloves.

Permanent damage

Keep cool. NdFeB magnets are susceptible to temperature. If you require resistance above 80°C, look for HT versions (H, SH, UH).

Conscious usage

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

Shattering risk

Watch out for shards. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.

Do not give to children

These products are not toys. Eating several magnets may result in them pinching intestinal walls, which poses a critical condition and necessitates immediate surgery.

Warning! Details about risks in the article: Safety of working with magnets.

MW 4x8 / N38 - cylindrical magnet

Technical - MW 4x8 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the magnet - technical parameters

Table 1: Static pull force (pull vs gap) - characteristics MW 4x8 / N38

Table 2: Shear capacity (vertical surface) MW 4x8 / N38

Table 3: Wall mounting (sliding) - vertical pull MW 4x8 / N38

Table 4: Steel thickness (substrate influence) - power losses MW 4x8 / N38

Table 5: Thermal resistance (stability) - resistance threshold MW 4x8 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MW 4x8 / N38

Table 7: Protective zones (implants) - precautionary measures MW 4x8 / N38

Table 8: Dynamics (kinetic energy) - collision effects MW 4x8 / N38

Table 9: Coating parameters (durability) MW 4x8 / N38

Table 10: Electrical data (Flux) MW 4x8 / N38

Table 11: Submerged application MW 4x8 / N38

1. Shear force

2. Steel thickness impact

3. Power loss vs temp

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

Chemical composition

Sustainability

Pulling force

Magnetic Field

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SM 32x400 [2xM8] / N42 - magnetic separator

NCM 40x13.5x5 / N38 - channel magnetic holder

SM 32x475 [2xM8] / N52 - magnetic separator

Pros and cons of Nd2Fe14B magnets.

Advantages

Disadvantages

Pull force analysis

Maximum lifting capacity of the magnet – what affects it?

Lifting capacity in real conditions – factors

H&S for magnets

Nickel allergy

Flammability

Pacemakers

Magnetic interference

Magnetic media

Bone fractures

Permanent damage

Conscious usage

Shattering risk

Do not give to children

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - characteristics
MW 4x8 / N38

Table 2: Shear capacity (vertical surface)
MW 4x8 / N38

Table 3: Wall mounting (sliding) - vertical pull
MW 4x8 / N38

Table 4: Steel thickness (substrate influence) - power losses
MW 4x8 / N38

Table 5: Thermal resistance (stability) - resistance threshold
MW 4x8 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 4x8 / N38

Table 7: Protective zones (implants) - precautionary measures
MW 4x8 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MW 4x8 / N38

Table 9: Coating parameters (durability)
MW 4x8 / N38

Table 10: Electrical data (Flux)
MW 4x8 / N38

Table 11: Submerged application
MW 4x8 / N38

Pros and cons of Nd₂Fe₁₄B magnets.