Product available Ships today (order by 14:00)

MW 8x4 / N38 - cylindrical magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN
Rating: 5

cylindrical magnet

Catalog no 010104

GTIN/EAN: 5906301811039

5.00

Diameter Ø

8 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

1.51 g

Magnetization Direction

↑ axial

Load capacity

2.04 kg / 20.00 N

Magnetic Induction

437.78 mT / 4378 Gs

Coating

[NiCuNi] Nickel

check technical specifications »

0.701 ZŁ with VAT / pcs + price for transport

0.570 ZŁ net + 23% VAT / pcs

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Physical properties - MW 8x4 / N38 - cylindrical magnet

Specification / characteristics - MW 8x4 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010104
GTIN/EAN	5906301811039
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	8 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	1.51 g
Magnetization Direction	↑ axial
Load capacity ~ ?	2.04 kg / 20.00 N
Magnetic Induction ~ ?	437.78 mT / 4378 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 8x4 / 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

Technical modeling of the assembly - technical parameters

These information represent the outcome of a mathematical analysis. Values were calculated on models for the class Nd₂Fe₁₄B. Actual performance might slightly differ. Please consider these data as a supplementary guide when designing systems.

Table 1: Static pull force (pull vs gap) - power drop
MW 8x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4374 Gs 437.4 mT	2.04 kg / 4.50 LBS 2040.0 g / 20.0 N	medium risk
1 mm	3338 Gs 333.8 mT	1.19 kg / 2.62 LBS 1187.8 g / 11.7 N	low risk
2 mm	2386 Gs 238.6 mT	0.61 kg / 1.34 LBS 607.0 g / 6.0 N	low risk
3 mm	1663 Gs 166.3 mT	0.29 kg / 0.65 LBS 294.9 g / 2.9 N	low risk
5 mm	824 Gs 82.4 mT	0.07 kg / 0.16 LBS 72.4 g / 0.7 N	low risk
10 mm	205 Gs 20.5 mT	0.00 kg / 0.01 LBS 4.5 g / 0.0 N	low risk
15 mm	76 Gs 7.6 mT	0.00 kg / 0.00 LBS 0.6 g / 0.0 N	low risk
20 mm	36 Gs 3.6 mT	0.00 kg / 0.00 LBS 0.1 g / 0.0 N	low risk
30 mm	12 Gs 1.2 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk
50 mm	3 Gs 0.3 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk

Pulling power weakens drastically with every subsequent millimeter of distance. Remember that even a microscopic distance (e.g., contamination, paint, dust) noticeably reduces the pull force. Neodymiums work most effectively during direct contact; air break kills the power. Observe how rapidly the load capacity fall, when the product does not adhere flatly to the metal substrate. When calculating the assembly, eliminate redundant distances.

Table 2: Shear force (vertical surface)
MW 8x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.41 kg / 0.90 LBS 408.0 g / 4.0 N
1 mm	Stal (~0.2)	0.24 kg / 0.52 LBS 238.0 g / 2.3 N
2 mm	Stal (~0.2)	0.12 kg / 0.27 LBS 122.0 g / 1.2 N
3 mm	Stal (~0.2)	0.06 kg / 0.13 LBS 58.0 g / 0.6 N
5 mm	Stal (~0.2)	0.01 kg / 0.03 LBS 14.0 g / 0.1 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 defines the approximate force necessary to start the downward movement of the magnet vertically against a vertical metal surface (considering standard friction). This parameter depends on the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 8x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.61 kg / 1.35 LBS 612.0 g / 6.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.41 kg / 0.90 LBS 408.0 g / 4.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.20 kg / 0.45 LBS 204.0 g / 2.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.02 kg / 2.25 LBS 1020.0 g / 10.0 N

When mounting a element on a upright plane (e.g., a board), it will maintain only approx. 1/5 of its maximum pull force. Gravity as well as a low friction coefficient influence the fact that magnets slide down easier than they detach. Planning a wall mount? Remember that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the holder will give way down under a significantly smaller weight. Application of an anti-slip layer can effectively improve the result.

Table 4: Steel thickness (saturation) - power losses
MW 8x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.20 kg / 0.45 LBS 204.0 g / 2.0 N
1 mm	25%	0.51 kg / 1.12 LBS 510.0 g / 5.0 N
2 mm	50%	1.02 kg / 2.25 LBS 1020.0 g / 10.0 N
3 mm	75%	1.53 kg / 3.37 LBS 1530.0 g / 15.0 N
5 mm	100%	2.04 kg / 4.50 LBS 2040.0 g / 20.0 N
10 mm	100%	2.04 kg / 4.50 LBS 2040.0 g / 20.0 N
11 mm	100%	2.04 kg / 4.50 LBS 2040.0 g / 20.0 N
12 mm	100%	2.04 kg / 4.50 LBS 2040.0 g / 20.0 N

A too thin steel is unable to absorb the full magnetic flux, which weakens actual performance of the holder. Should you install a neodymium to a weak sheet, the field will pass right through and the pull force will drop sharply. To utilize full efficiency of this neodymium's potential, you need a suitably thick element of steel. The saturation phenomenon causes that on delicate walls (e.g., appliance housings), the magnet works worse. We recommend selecting the steel dimension according to the table below.

Table 5: Thermal resistance (material behavior) - power drop
MW 8x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	2.04 kg / 4.50 LBS 2040.0 g / 20.0 N	OK
40 °C	-2.2%	2.00 kg / 4.40 LBS 1995.1 g / 19.6 N	OK
60 °C	-4.4%	1.95 kg / 4.30 LBS 1950.2 g / 19.1 N
80 °C	-6.6%	1.91 kg / 4.20 LBS 1905.4 g / 18.7 N
100 °C	-28.8%	1.45 kg / 3.20 LBS 1452.5 g / 14.2 N

Standard neodymium magnets change their properties strength above the temperature limit. Watch out for overheating – heat can permanently destroy this magnet. With every degree above norm, the magnet's capacity momentarily lowers. Do not use this product in hot environments exceeding its operating temperature limit. Too high temperature will lead to permanent loss of magnetic properties.

*Technical advisory: Heat tolerance is determined by both grade, but also on the magnet's shape. Flat magnets (low permeance coefficient) may lose charge permanently under lower heat stress compared to rod magnets. The danger warning in the table points to permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 8x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	5.93 kg / 13.07 LBS 5 531 Gs	0.89 kg / 1.96 LBS 889 g / 8.7 N	N/A
1 mm	4.63 kg / 10.21 LBS 7 730 Gs	0.69 kg / 1.53 LBS 694 g / 6.8 N	4.17 kg / 9.18 LBS ~0 Gs
2 mm	3.45 kg / 7.61 LBS 6 675 Gs	0.52 kg / 1.14 LBS 518 g / 5.1 N	3.11 kg / 6.85 LBS ~0 Gs
3 mm	2.49 kg / 5.50 LBS 5 674 Gs	0.37 kg / 0.82 LBS 374 g / 3.7 N	2.25 kg / 4.95 LBS ~0 Gs
5 mm	1.23 kg / 2.72 LBS 3 989 Gs	0.18 kg / 0.41 LBS 185 g / 1.8 N	1.11 kg / 2.45 LBS ~0 Gs
10 mm	0.21 kg / 0.46 LBS 1 648 Gs	0.03 kg / 0.07 LBS 32 g / 0.3 N	0.19 kg / 0.42 LBS ~0 Gs
20 mm	0.01 kg / 0.03 LBS 410 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.03 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 39 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 24 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 15 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 11 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 8 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 6 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two strong neodymiums interact from a much further distance than a neodymium and metal combination. The setup of two magnets creates a more powerful interaction and a larger range of operation. Want to build a solid fastener? Use a pair of magnets instead of one magnet and a steel. Remember that when attracting two neodymiums, the pinch force is huge. The repulsion force is marginally weaker than the attraction, but still large.
*The magnetic induction for N-N configuration reaches ~0 Gs in the exact middle between the magnets (resulting from vector opposition).
Attention: Figures demonstrate shear force of a pair of same magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (implants) - warnings
MW 8x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	4.5 cm
Hearing aid	10 Gs (1.0 mT)	3.5 cm
Mechanical watch	20 Gs (2.0 mT)	2.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	2.0 cm
Car key	50 Gs (5.0 mT)	2.0 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation poses a large risk to electronic devices as well as medical implants. These magnets generate a field that prevents correct functioning of digital equipment. Remember: the invisible magnetic field acts through matter and housings. Increased vigilance must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Impact energy (cracking risk) - warning
MW 8x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	37.12 km/h (10.31 m/s)	0.08 J
30 mm	64.21 km/h (17.83 m/s)	0.24 J
50 mm	82.89 km/h (23.02 m/s)	0.40 J
100 mm	117.22 km/h (32.56 m/s)	0.80 J

NdFeB products are very brittle – a strong collision with metal can result in shattering. Watch the impact speed – a neodymium left loose becomes dangerous. Striking energy can destroy the magnet or injury to skin. Always hold the magnet during bringing near metal so it doesn't slam with momentum against the steel surface. A collision at high speed ends with a crack of the neodymium. Use safety goggles when working with powerful specimens.

Table 9: Coating parameters (durability)
MW 8x4 / N38

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

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

Table 10: Electrical data (P_c)
MW 8x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	2 233 Mx	22.3 µWb
P_c Coefficient	0.59	Low (Flat)

Flux value passing through the pole surface. Key data for generator designers and motors. The P_c coefficient defines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 8x4 / N38

Environment	Effective steel pull	Effect
Air (land)	2.04 kg	Standard
Water (riverbed)	2.34 kg (+0.30 kg buoyancy gain)	+14.5%

Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

Water displaces steel, making heavy objects slightly lighter. Buoyancy helps in lifting finds.

1. Shear force

*Warning: On a vertical wall, the magnet retains merely ~20% of its max power.

2. Efficiency vs thickness

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

3. Temperature resistance

*For N38 grade, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.59

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.

Engineering data and GPSR

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: 010104-2026

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The presented product is an incredibly powerful cylindrical magnet, composed of durable NdFeB material, which, with dimensions of Ø8x4 mm, guarantees maximum efficiency. This specific item is characterized by high dimensional repeatability and industrial build quality, making it an excellent solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 2.04 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is perfect for building generators, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 20.00 N with a weight of only 1.51 g, this rod is indispensable in miniature devices and wherever every gram matters.

Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure stability in industry, 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 professional neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø8x4), 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 Ø8x4 mm, which, at a weight of 1.51 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 2.04 kg (force ~20.00 N), which, with such defined dimensions, proves the high power 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 4 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 through the diameter if your project requires it.

Strengths and weaknesses of neodymium magnets.

Pros

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

They do not lose strength, even over approximately ten years – the reduction in lifting capacity is only ~1% (according to tests),
Neodymium magnets are exceptionally resistant to magnetic field loss caused by external magnetic fields,
By using a lustrous coating of nickel, the element gains an professional look,
Neodymium magnets generate maximum magnetic induction on a their surface, which allows for strong attraction,
Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
Due to the possibility of accurate forming and customization to custom requirements, NdFeB magnets can be created in a wide range of shapes and sizes, which expands the range of possible applications,
Versatile presence in modern technologies – they are utilized in data components, electric motors, precision medical tools, also complex engineering applications.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Disadvantages of neodymium magnets:

To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
We recommend a housing - magnetic mount, due to difficulties in creating threads inside the magnet and complicated shapes.
Health risk related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these products are able to complicate diagnosis medical in case of swallowing.
Due to complex production process, their price is higher than average,

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what affects it?

Magnet power is the result of a measurement for ideal contact conditions, including:

with the contact of a yoke made of special test steel, guaranteeing full magnetic saturation
with a cross-section of at least 10 mm
with an polished touching surface
without the slightest air gap between the magnet and steel
for force applied at a right angle (pull-off, not shear)
at conditions approx. 20°C

Lifting capacity in practice – influencing factors

Bear in mind that the working load may be lower subject to the following factors, starting with the most relevant:

Gap (betwixt the magnet and the metal), as even a very small clearance (e.g. 0.5 mm) results in a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
Force direction – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet holds significantly lower power (often approx. 20-30% of maximum force).
Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
Metal type – different alloys reacts the same. High carbon content weaken the interaction with the magnet.
Plate texture – smooth surfaces guarantee perfect abutment, which improves force. Rough surfaces weaken the grip.
Heat – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was determined by applying a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.

Precautions when working with neodymium magnets

Risk of cracking

Despite metallic appearance, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.

Skin irritation risks

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If skin irritation appears, cease handling magnets and wear gloves.

Magnetic media

Very strong magnetic fields can corrupt files on payment cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.

Pinching danger

Protect your hands. Two large magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Be careful!

Conscious usage

Before starting, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.

Pacemakers

For implant holders: Powerful magnets disrupt medical devices. Maintain minimum 30 cm distance or request help to work with the magnets.

Choking Hazard

Adult use only. Small elements pose a choking risk, causing severe trauma. Keep out of reach of kids and pets.

Fire risk

Powder produced during cutting of magnets is self-igniting. Avoid drilling into magnets without proper cooling and knowledge.

Precision electronics

GPS units and smartphones are extremely susceptible to magnetism. Direct contact with a strong magnet can ruin the internal compass in your phone.

Do not overheat magnets

Standard neodymium magnets (grade N) lose power when the temperature goes above 80°C. This process is irreversible.

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

MW 8x4 / N38 - cylindrical magnet

Physical properties - MW 8x4 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the assembly - technical parameters

Table 1: Static pull force (pull vs gap) - power drop MW 8x4 / N38

Table 2: Shear force (vertical surface) MW 8x4 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MW 8x4 / N38

Table 4: Steel thickness (saturation) - power losses MW 8x4 / N38

Table 5: Thermal resistance (material behavior) - power drop MW 8x4 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range MW 8x4 / N38

Table 7: Safety (HSE) (implants) - warnings MW 8x4 / N38

Table 8: Impact energy (cracking risk) - warning MW 8x4 / N38

Table 9: Coating parameters (durability) MW 8x4 / N38

Table 10: Electrical data (Pc) MW 8x4 / N38

Table 11: Hydrostatics and buoyancy MW 8x4 / N38

1. Shear force

2. Efficiency vs thickness

3. Temperature resistance

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

Elemental analysis

Sustainability

Pulling force

Magnetic Induction

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SM 32x300 [2xM8] / N42 - magnetic separator

SMZR 32x150 / N52 - magnetic separator with handle

UI 45x13x6 [Z323] / N38 - badge holder

Strengths and weaknesses of neodymium magnets.

Pros

Disadvantages

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what affects it?

Lifting capacity in practice – influencing factors

Precautions when working with neodymium magnets

Risk of cracking

Skin irritation risks

Magnetic media

Pinching danger

Conscious usage

Pacemakers

Choking Hazard

Fire risk

Precision electronics

Do not overheat magnets

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - power drop
MW 8x4 / N38

Table 2: Shear force (vertical surface)
MW 8x4 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 8x4 / N38

Table 4: Steel thickness (saturation) - power losses
MW 8x4 / N38

Table 5: Thermal resistance (material behavior) - power drop
MW 8x4 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 8x4 / N38

Table 7: Safety (HSE) (implants) - warnings
MW 8x4 / N38

Table 8: Impact energy (cracking risk) - warning
MW 8x4 / N38

Table 9: Coating parameters (durability)
MW 8x4 / N38

Table 10: Electrical data (P_c)
MW 8x4 / N38

Table 11: Hydrostatics and buoyancy
MW 8x4 / N38