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MW 4x4 / 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 010076

GTIN/EAN: 5906301810759

5.00

Diameter Ø

4 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

0.38 g

Magnetization Direction

↑ axial

Load capacity

0.51 kg / 4.96 N

Magnetic Induction

552.79 mT / 5528 Gs

Coating

[NiCuNi] Nickel

technical specifications »

0.406 ZŁ with VAT / pcs + price for transport

0.330 ZŁ net + 23% VAT / pcs

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Technical - MW 4x4 / N38 - cylindrical magnet

Specification / characteristics - MW 4x4 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010076
GTIN/EAN	5906301810759
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	4 mm [±0,1 mm]
Weight	0.38 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.51 kg / 4.96 N
Magnetic Induction ~ ?	552.79 mT / 5528 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 4x4 / 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

Physical modeling of the product - technical parameters

The following data represent the direct effect of a mathematical calculation. Results are based on algorithms for the class Nd₂Fe₁₄B. Real-world conditions might slightly differ. Use these data as a supplementary guide for designers.

Table 1: Static force (pull vs gap) - power drop
MW 4x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5517 Gs 551.7 mT	0.51 kg / 1.12 LBS 510.0 g / 5.0 N	low risk
1 mm	2984 Gs 298.4 mT	0.15 kg / 0.33 LBS 149.2 g / 1.5 N	low risk
2 mm	1498 Gs 149.8 mT	0.04 kg / 0.08 LBS 37.6 g / 0.4 N	low risk
3 mm	803 Gs 80.3 mT	0.01 kg / 0.02 LBS 10.8 g / 0.1 N	low risk
5 mm	296 Gs 29.6 mT	0.00 kg / 0.00 LBS 1.5 g / 0.0 N	low risk
10 mm	58 Gs 5.8 mT	0.00 kg / 0.00 LBS 0.1 g / 0.0 N	low risk
15 mm	20 Gs 2.0 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk
20 mm	9 Gs 0.9 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk
30 mm	3 Gs 0.3 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk
50 mm	1 Gs 0.1 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk

Pulling power weakens significantly with every subsequent millimeter of gap. Remember that every additional insulation layer (e.g., dirt, varnish, rust) strongly reduces the pull force. Magnets work most effectively at the point of direct contact; air break nullifies the power. Analyze how flashily the load capacity drop, when the product does not touch tightly to the steel surface. When designing the assembly, discard redundant distances.

Table 2: Sliding load (wall)
MW 4x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.10 kg / 0.22 LBS 102.0 g / 1.0 N
1 mm	Stal (~0.2)	0.03 kg / 0.07 LBS 30.0 g / 0.3 N
2 mm	Stal (~0.2)	0.01 kg / 0.02 LBS 8.0 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 table below presents the approximate weight limit sufficient to initiate the shifting of the magnet down on a vertical steel plate (assuming standard friction). This value is relative to the separation distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
MW 4x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.15 kg / 0.34 LBS 153.0 g / 1.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.10 kg / 0.22 LBS 102.0 g / 1.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.05 kg / 0.11 LBS 51.0 g / 0.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.26 kg / 0.56 LBS 255.0 g / 2.5 N

When mounting a element on a upright wall (e.g., a fridge), it will only hold only approx. 1/5 of its maximum pull force. Gravity as well as a weak degree of grip mean that magnets slip faster than they pull off. Planning a wall mount? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a painted metal, the element will slip down under a significantly smaller load. Application of an anti-slip layer can effectively increase the grip.

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

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.05 kg / 0.11 LBS 51.0 g / 0.5 N
1 mm	25%	0.13 kg / 0.28 LBS 127.5 g / 1.3 N
2 mm	50%	0.26 kg / 0.56 LBS 255.0 g / 2.5 N
3 mm	75%	0.38 kg / 0.84 LBS 382.5 g / 3.8 N
5 mm	100%	0.51 kg / 1.12 LBS 510.0 g / 5.0 N
10 mm	100%	0.51 kg / 1.12 LBS 510.0 g / 5.0 N
11 mm	100%	0.51 kg / 1.12 LBS 510.0 g / 5.0 N
12 mm	100%	0.51 kg / 1.12 LBS 510.0 g / 5.0 N

A thin sheet is unable to focus the full magnetic flux, which wastes potential of the magnet. Should you attach a powerful product to a too thin substrate, the magnetism will penetrate right through and the pull force will drop sharply. To achieve the maximum of this magnet's power, you need a suitably thick backing of steel. The material oversaturation means that on delicate walls (e.g., thin profiles), the magnet holds weaker. We suggest choosing the steel dimension according to the table below.

Table 5: Working in heat (material behavior) - thermal limit
MW 4x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.51 kg / 1.12 LBS 510.0 g / 5.0 N	OK
40 °C	-2.2%	0.50 kg / 1.10 LBS 498.8 g / 4.9 N	OK
60 °C	-4.4%	0.49 kg / 1.07 LBS 487.6 g / 4.8 N	OK
80 °C	-6.6%	0.48 kg / 1.05 LBS 476.3 g / 4.7 N
100 °C	-28.8%	0.36 kg / 0.80 LBS 363.1 g / 3.6 N

Standard neodymium magnets irreversibly lose strength above the temperature limit. Watch out for overheating – high temperature can irreversibly damage this product. As the temperature rises, the magnet's power momentarily decreases. Refrain from using this product in hot environments exceeding its operating temperature limit. Too high temperature will result in irreversible degradation of magnetic properties.

*Important note: Temperature resistance depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (low permeance coefficient) may lose charge permanently at lower temperatures compared to rod magnets. Warning indicator in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field range
MW 4x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.36 kg / 5.20 LBS 5 984 Gs	0.35 kg / 0.78 LBS 354 g / 3.5 N	N/A
1 mm	1.34 kg / 2.96 LBS 8 324 Gs	0.20 kg / 0.44 LBS 201 g / 2.0 N	1.21 kg / 2.66 LBS ~0 Gs
2 mm	0.69 kg / 1.52 LBS 5 968 Gs	0.10 kg / 0.23 LBS 103 g / 1.0 N	0.62 kg / 1.37 LBS ~0 Gs
3 mm	0.34 kg / 0.76 LBS 4 213 Gs	0.05 kg / 0.11 LBS 52 g / 0.5 N	0.31 kg / 0.68 LBS ~0 Gs
5 mm	0.09 kg / 0.20 LBS 2 169 Gs	0.01 kg / 0.03 LBS 14 g / 0.1 N	0.08 kg / 0.18 LBS ~0 Gs
10 mm	0.01 kg / 0.01 LBS 592 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
20 mm	0.00 kg / 0.00 LBS 116 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 10 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 6 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 4 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 3 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 2 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 1 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnets interact from a significantly greater distance than a neodymium and metal setup. The setup of magnet-to-magnet creates a more powerful interaction and a wider radius of operation. Want to build a strong closure? Apply two magnets instead of one magnet and a striker plate. Be careful that when bringing together two magnets, the collision energy is massive. The repulsion force is slightly lower than the connection force, but still significant.
*Field value in repulsion mode is approximately ~0 Gs at the geometric center of the gap (due to field cancellation).
Important: Estimates apply to shear force of dual matching magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - warnings
MW 4x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	3.0 cm
Hearing aid	10 Gs (1.0 mT)	2.0 cm
Timepiece	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

Extremely neodym field poses a large risk to electronic devices and medical implants. These neodymiums produce a field that destroys function of sensitive medical devices. Remember: the invisible magnetic field acts through matter and housings. Exceptional care must be taken by people with hearing aids and insulin pumps. Also at risk are: mechanical watches, car keys, speakers, and screens. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - warning
MW 4x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	36.95 km/h (10.26 m/s)	0.02 J
30 mm	63.99 km/h (17.78 m/s)	0.06 J
50 mm	82.62 km/h (22.95 m/s)	0.10 J
100 mm	116.84 km/h (32.45 m/s)	0.20 J

NdFeB products are delicate – a collision with steel causes immediate chipping. Watch the impact speed – a magnet released freely becomes dangerous. Impact energy can destroy the magnet or injury to fingers. Be sure to control the product during mounting so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Wear safety glasses when playing with powerful specimens.

Table 9: Coating parameters (durability)
MW 4x4 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (P_c)
MW 4x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	717 Mx	7.2 µWb
P_c Coefficient	0.89	High (Stable)

Total magnetic flux emitted by the magnet pole. Key data when building generators as well as sensors. The P_c coefficient determines the magnet's operating point.

Table 11: Submerged application
MW 4x4 / N38

Environment	Effective steel pull	Effect
Air (land)	0.51 kg	Standard
Water (riverbed)	0.58 kg (+0.07 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. However, remember the water resistance when pulling the rope quickly.

1. Sliding resistance

*Warning: On a vertical wall, the magnet holds just a fraction of its nominal pull.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) drastically limits 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) = 0.89

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.

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%

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: 010076-2026

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This product is an extremely powerful cylindrical magnet, produced from modern NdFeB material, which, with dimensions of Ø4x4 mm, guarantees maximum efficiency. The MW 4x4 / N38 component 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 significant force (approx. 0.51 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

This model is created for building generators, advanced sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the high power of 4.96 N with a weight of only 0.38 g, this cylindrical magnet is indispensable in electronics 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., 4.1 mm) using epoxy glues. To ensure stability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most popular standard for industrial neodymium magnets, offering a great economic balance and operational stability. If you need even stronger magnets in the same volume (Ø4x4), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

This model is characterized by dimensions Ø4x4 mm, which, at a weight of 0.38 g, makes it an element with high magnetic energy density. The key parameter here is the holding force amounting to approximately 0.51 kg (force ~4.96 N), which, with such defined dimensions, proves the high grade of the NdFeB material. 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 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.

Advantages and disadvantages of neodymium magnets.

Advantages

Apart from their notable magnetism, neodymium magnets have these key benefits:

Their magnetic field remains stable, and after around ten years it decreases only by ~1% (theoretically),
They have excellent resistance to weakening of magnetic properties due to opposing magnetic fields,
Thanks to the reflective finish, the coating of nickel, gold-plated, or silver gives an clean appearance,
Neodymium magnets generate maximum magnetic induction on a their surface, which ensures high operational effectiveness,
Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for action at temperatures reaching 230°C and above...
Possibility of custom machining as well as optimizing to specific needs,
Universal use in advanced technology sectors – they are utilized in mass storage devices, electromotive mechanisms, medical equipment, also technologically advanced constructions.
Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Limitations

Drawbacks and weaknesses of neodymium magnets and ways of using them

To avoid cracks under impact, we recommend using special steel holders. Such a solution secures 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 force. 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 stable to moisture, when using outdoors
We suggest a housing - magnetic holder, due to difficulties in producing threads inside the magnet and complicated shapes.
Possible danger resulting from small fragments of magnets pose a threat, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these products can complicate diagnosis medical in case of swallowing.
Due to complex production process, their price is higher than average,

Pull force analysis

Maximum lifting capacity of the magnet – what affects it?

Holding force of 0.51 kg is a theoretical maximum value performed under standard conditions:

using a base made of low-carbon steel, serving as a circuit closing element
possessing a thickness of min. 10 mm to ensure full flux closure
with a plane free of scratches
with total lack of distance (no paint)
under vertical force vector (90-degree angle)
at room temperature

Magnet lifting force in use – key factors

During everyday use, the actual holding force results from many variables, listed from crucial:

Gap (between the magnet and the metal), since even a microscopic clearance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to varnish, rust or debris).
Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet holds significantly lower power (often approx. 20-30% of maximum force).
Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
Material composition – different alloys attracts identically. Alloy additives weaken the interaction with the magnet.
Surface condition – ground elements ensure maximum contact, which increases field saturation. Uneven metal reduce efficiency.
Temperature – heating the magnet results in weakening of force. It is worth remembering the thermal limit for a given model.

Lifting capacity was assessed using a polished steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the lifting capacity.

Warnings

Heat sensitivity

Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. Damage is permanent.

Keep away from children

Absolutely keep magnets away from children. Risk of swallowing is significant, and the consequences of magnets clamping inside the body are fatal.

Precision electronics

A powerful magnetic field interferes with the functioning of compasses in phones and GPS navigation. Do not bring magnets near a smartphone to prevent damaging the sensors.

Do not drill into magnets

Machining of NdFeB material poses a fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Finger safety

Protect your hands. Two large magnets will snap together immediately with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Medical interference

People with a pacemaker should maintain an large gap from magnets. The magnetic field can disrupt the functioning of the implant.

Protective goggles

Despite metallic appearance, the material is delicate and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Protect data

Do not bring magnets near a wallet, computer, or TV. The magnetism can permanently damage these devices and erase data from cards.

Avoid contact if allergic

It is widely known that the nickel plating (the usual finish) is a potent allergen. If your skin reacts to metals, avoid direct skin contact and opt for versions in plastic housing.

Conscious usage

Be careful. Neodymium magnets attract from a distance and connect with huge force, often quicker than you can react.

Attention! Learn more about hazards in the article: Magnet Safety Guide.

MW 4x4 / N38 - cylindrical magnet

Technical - MW 4x4 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the product - technical parameters

Table 1: Static force (pull vs gap) - power drop MW 4x4 / N38

Table 2: Sliding load (wall) MW 4x4 / N38

Table 3: Vertical assembly (shearing) - vertical pull MW 4x4 / N38

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

Table 5: Working in heat (material behavior) - thermal limit MW 4x4 / N38

Table 6: Two magnets (attraction) - field range MW 4x4 / N38

Table 7: Hazards (electronics) - warnings MW 4x4 / N38

Table 8: Dynamics (cracking risk) - warning MW 4x4 / N38

Table 9: Coating parameters (durability) MW 4x4 / N38

Table 10: Construction data (Pc) MW 4x4 / N38

Table 11: Submerged application MW 4x4 / N38

1. Sliding resistance

2. Efficiency vs thickness

3. Temperature resistance

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

Chemical composition

Environmental data

Pulling force

Magnetic Field

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Advantages and disadvantages of neodymium magnets.

Advantages

Limitations

Pull force analysis

Maximum lifting capacity of the magnet – what affects it?

Magnet lifting force in use – key factors

Warnings

Heat sensitivity

Keep away from children

Precision electronics

Do not drill into magnets

Finger safety

Medical interference

Protective goggles

Protect data

Avoid contact if allergic

Conscious usage

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - power drop
MW 4x4 / N38

Table 2: Sliding load (wall)
MW 4x4 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MW 4x4 / N38

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

Table 5: Working in heat (material behavior) - thermal limit
MW 4x4 / N38

Table 6: Two magnets (attraction) - field range
MW 4x4 / N38

Table 7: Hazards (electronics) - warnings
MW 4x4 / N38

Table 8: Dynamics (cracking risk) - warning
MW 4x4 / N38

Table 9: Coating parameters (durability)
MW 4x4 / N38

Table 10: Construction data (P_c)
MW 4x4 / N38

Table 11: Submerged application
MW 4x4 / N38