Product available Ships tomorrow

MW 15x4 / 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 010030

GTIN/EAN: 5906301810292

5.00

Diameter Ø

15 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

5.3 g

Magnetization Direction

↑ axial

Load capacity

4.22 kg / 41.38 N

Magnetic Induction

291.60 mT / 2916 Gs

Coating

[NiCuNi] Nickel

product parameters »

1.968 ZŁ with VAT / pcs + price for transport

1.600 ZŁ net + 23% VAT / pcs

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Product card - MW 15x4 / N38 - cylindrical magnet

Specification / characteristics - MW 15x4 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010030
GTIN/EAN	5906301810292
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	15 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	5.3 g
Magnetization Direction	↑ axial
Load capacity ~ ?	4.22 kg / 41.38 N
Magnetic Induction ~ ?	291.60 mT / 2916 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 15x4 / 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 modeling of the product - data

The following values represent the outcome of a mathematical analysis. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Actual performance might slightly differ. Treat these data as a preliminary roadmap during assembly planning.

Table 1: Static force (force vs gap) - interaction chart
MW 15x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2915 Gs 291.5 mT	4.22 kg / 9.30 LBS 4220.0 g / 41.4 N	strong
1 mm	2620 Gs 262.0 mT	3.41 kg / 7.51 LBS 3408.2 g / 33.4 N	strong
2 mm	2276 Gs 227.6 mT	2.57 kg / 5.67 LBS 2571.6 g / 25.2 N	strong
3 mm	1928 Gs 192.8 mT	1.85 kg / 4.07 LBS 1845.5 g / 18.1 N	weak grip
5 mm	1324 Gs 132.4 mT	0.87 kg / 1.92 LBS 870.3 g / 8.5 N	weak grip
10 mm	505 Gs 50.5 mT	0.13 kg / 0.28 LBS 126.7 g / 1.2 N	weak grip
15 mm	222 Gs 22.2 mT	0.02 kg / 0.05 LBS 24.4 g / 0.2 N	weak grip
20 mm	113 Gs 11.3 mT	0.01 kg / 0.01 LBS 6.3 g / 0.1 N	weak grip
30 mm	40 Gs 4.0 mT	0.00 kg / 0.00 LBS 0.8 g / 0.0 N	weak grip
50 mm	10 Gs 1.0 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip

Magnetic force decreases significantly with every mm of distance. Keep in mind that every additional insulation layer (e.g., dirt, paint, dust) significantly reduces the pull force. Magnets operate optimally during direct contact; distance drastically cuts the power. Observe how rapidly the load capacity drop, when the magnet does not touch directly to the metal substrate. When designing the arrangement, avoid redundant distances.

Table 2: Shear hold (vertical surface)
MW 15x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.84 kg / 1.86 LBS 844.0 g / 8.3 N
1 mm	Stal (~0.2)	0.68 kg / 1.50 LBS 682.0 g / 6.7 N
2 mm	Stal (~0.2)	0.51 kg / 1.13 LBS 514.0 g / 5.0 N
3 mm	Stal (~0.2)	0.37 kg / 0.82 LBS 370.0 g / 3.6 N
5 mm	Stal (~0.2)	0.17 kg / 0.38 LBS 174.0 g / 1.7 N
10 mm	Stal (~0.2)	0.03 kg / 0.06 LBS 26.0 g / 0.3 N
15 mm	Stal (~0.2)	0.00 kg / 0.01 LBS 4.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 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

This section calculates the approximate holding capacity needed to cause the downward movement of the magnet downwards against a upright steel wall (considering typical friction coefficient). This value varies with the separation distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MW 15x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.27 kg / 2.79 LBS 1266.0 g / 12.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.84 kg / 1.86 LBS 844.0 g / 8.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.42 kg / 0.93 LBS 422.0 g / 4.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.11 kg / 4.65 LBS 2110.0 g / 20.7 N

When mounting a holder on a upright wall (e.g., a car body), it will maintain just about 20%-30% of its nominal power. Gravitational force as well as a weak degree of grip cause that magnets slip easier than they pull off. Designing a hanger? Note that the shear force is significantly lower than the perpendicular breakaway force. On a slippery surface, the holder will slide down under a noticeably lighter load. Application of an anti-slip layer can effectively increase the grip.

Table 4: Material efficiency (saturation) - power losses
MW 15x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.42 kg / 0.93 LBS 422.0 g / 4.1 N
1 mm	25%	1.06 kg / 2.33 LBS 1055.0 g / 10.3 N
2 mm	50%	2.11 kg / 4.65 LBS 2110.0 g / 20.7 N
3 mm	75%	3.17 kg / 6.98 LBS 3165.0 g / 31.0 N
5 mm	100%	4.22 kg / 9.30 LBS 4220.0 g / 41.4 N
10 mm	100%	4.22 kg / 9.30 LBS 4220.0 g / 41.4 N
11 mm	100%	4.22 kg / 9.30 LBS 4220.0 g / 41.4 N
12 mm	100%	4.22 kg / 9.30 LBS 4220.0 g / 41.4 N

A thin metal plate is not enough to conduct the entire magnetic field, which weakens actual performance of the holder. If you attach a powerful product to a weak sheet, the flux will pass right through and the holding will be smaller. To squeeze the maximum of this neodymium's potential, you require a sufficiently solid backing of steel. The saturation effect means that on sheet metal structures (e.g., thin profiles), the magnet shows lower pull force. We advise picking the steel cross-section based on the following data.

Table 5: Thermal stability (stability) - thermal limit
MW 15x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	4.22 kg / 9.30 LBS 4220.0 g / 41.4 N	OK
40 °C	-2.2%	4.13 kg / 9.10 LBS 4127.2 g / 40.5 N	OK
60 °C	-4.4%	4.03 kg / 8.89 LBS 4034.3 g / 39.6 N
80 °C	-6.6%	3.94 kg / 8.69 LBS 3941.5 g / 38.7 N
100 °C	-28.8%	3.00 kg / 6.62 LBS 3004.6 g / 29.5 N

Standard neodymium magnets change their properties power above the temperature limit. Protect against heat – excessive heat can irreversibly damage this magnet. With every degree above norm, the magnet's force briefly drops. Avoid using this product close to ovens higher than its working range. Ignoring the limit will cause permanent loss of magnetic properties.

*Engineering note: Thermal stability is determined by both grade, as well as the dimension ratios. Thin magnets (pancake types) may lose charge permanently under lower heat stress than taller cylinders. Red status in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field collision
MW 15x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	9.26 kg / 20.41 LBS 4 518 Gs	1.39 kg / 3.06 LBS 1389 g / 13.6 N	N/A
1 mm	8.40 kg / 18.53 LBS 5 555 Gs	1.26 kg / 2.78 LBS 1261 g / 12.4 N	7.56 kg / 16.68 LBS ~0 Gs
2 mm	7.48 kg / 16.48 LBS 5 239 Gs	1.12 kg / 2.47 LBS 1122 g / 11.0 N	6.73 kg / 14.84 LBS ~0 Gs
3 mm	6.54 kg / 14.42 LBS 4 901 Gs	0.98 kg / 2.16 LBS 981 g / 9.6 N	5.89 kg / 12.98 LBS ~0 Gs
5 mm	4.80 kg / 10.59 LBS 4 200 Gs	0.72 kg / 1.59 LBS 721 g / 7.1 N	4.32 kg / 9.53 LBS ~0 Gs
10 mm	1.91 kg / 4.21 LBS 2 648 Gs	0.29 kg / 0.63 LBS 286 g / 2.8 N	1.72 kg / 3.79 LBS ~0 Gs
20 mm	0.28 kg / 0.61 LBS 1 010 Gs	0.04 kg / 0.09 LBS 42 g / 0.4 N	0.25 kg / 0.55 LBS ~0 Gs
50 mm	0.00 kg / 0.01 LBS 128 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
60 mm	0.00 kg / 0.00 LBS 79 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 52 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 36 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 26 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 19 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnets attract each other from a significantly greater distance than a neodymium and metal combination. The setup of two magnets produces a massive flux and a wider radius of action. Planning to create a solid fastener? Utilize two neodymiums instead of one magnet and a striker plate. Exercise caution that when connecting a pair of magnets, the impact force is massive. The repulsion force is marginally weaker than the connection force, but still impressive.
*Flux density in repulsion mode drops to ~0 Gs in the exact middle of the gap (caused by magnetic field nullification).
Attention: Figures apply to friction force of a pair of matching neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - warnings
MW 15x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.5 cm
Hearing aid	10 Gs (1.0 mT)	5.0 cm
Mechanical watch	20 Gs (2.0 mT)	4.0 cm
Mobile device	40 Gs (4.0 mT)	3.0 cm
Remote	50 Gs (5.0 mT)	3.0 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation poses a real danger to IT equipment as well as medical implants. These magnets produce a flux that prevents correct functioning of digital equipment. Be aware: the invisible magnetic field acts through matter and plastic. Increased vigilance must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, car keys, speakers, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - warning
MW 15x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	28.99 km/h (8.05 m/s)	0.17 J
30 mm	49.30 km/h (13.69 m/s)	0.50 J
50 mm	63.63 km/h (17.68 m/s)	0.83 J
100 mm	89.99 km/h (25.00 m/s)	1.66 J

NdFeB products are delicate – a strong collision with metal risks their cracking. Pay attention to connection velocity – a magnet released freely becomes dangerous. Striking energy can trigger coating fragments or painful pinches to skin. Hold the magnet firmly during installation so it doesn't hit violently against the metal. A collision at high speed almost guarantees destruction of the magnet. Use safety goggles when handling with large magnets.

Table 9: Surface protection spec
MW 15x4 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (P_c)
MW 15x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 659 Mx	56.6 µWb
P_c Coefficient	0.37	Low (Flat)

Total magnetic flux passing through the pole surface. Essential parameter for generator designers as well as sensors. P_c value defines the magnet's operating point.

Table 11: Physics of underwater searching
MW 15x4 / N38

Environment	Effective steel pull	Effect
Air (land)	4.22 kg	Standard
Water (riverbed)	4.83 kg (+0.61 kg buoyancy gain)	+14.5%

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

The magnetic field penetrates through water without any losses. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Sliding resistance

*Warning: On a vertical surface, the magnet holds only approx. 20-30% of its perpendicular strength.

2. Efficiency vs thickness

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

3. Temperature resistance

*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) = 0.37

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

Material specification

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: 010030-2026

Measurement Calculator

Force (pull)

Force in lbs

Field Strength

Gauss (Gs)

Induction (T)

Put your value in a single field to see the conversion for all other units at once.

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4.26 ZŁ brutto / pcs

This product is an extremely powerful cylindrical magnet, made from modern NdFeB material, which, at dimensions of Ø15x4 mm, guarantees maximum efficiency. This specific item boasts high dimensional repeatability and industrial build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 4.22 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Moreover, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

It finds application in modeling, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 41.38 N with a weight of only 5.3 g, this cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.

Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Magnets N38 are strong enough for the majority of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø15x4), 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 Ø15x4 mm, which, at a weight of 5.3 g, makes it an element with high magnetic energy density. The key parameter here is the holding force amounting to approximately 4.22 kg (force ~41.38 N), which, with such compact 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 diametrically if your project requires it.

Advantages as well as disadvantages of rare earth magnets.

Advantages

Besides their durability, neodymium magnets are valued for these benefits:

Their strength is maintained, and after approximately 10 years it drops only by ~1% (according to research),
Magnets effectively protect themselves against demagnetization caused by external fields,
By using a smooth layer of nickel, the element presents an proper look,
They show high magnetic induction at the operating surface, which affects their effectiveness,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the form) even at a temperature of 230°C or more...
Thanks to modularity in forming and the ability to customize to specific needs,
Fundamental importance in future technologies – they are commonly used in magnetic memories, brushless drives, medical devices, also technologically advanced constructions.
Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Weaknesses

Drawbacks and weaknesses of neodymium magnets: weaknesses and usage proposals

Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a special holder, which not only secures them against impacts but also increases their durability
Neodymium magnets lose their strength 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
When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
Limited ability of making threads in the magnet and complex shapes - recommended is a housing - mounting mechanism.
Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child safety. Additionally, small components of these devices are able to disrupt the diagnostic process medical when they are in the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum holding power of the magnet – what it depends on?

Breakaway force is the result of a measurement for the most favorable conditions, assuming:

with the application of a sheet made of low-carbon steel, guaranteeing maximum field concentration
possessing a thickness of at least 10 mm to avoid saturation
characterized by smoothness
under conditions of ideal adhesion (metal-to-metal)
under axial force direction (90-degree angle)
in neutral thermal conditions

Lifting capacity in real conditions – factors

Bear in mind that the application force will differ depending on elements below, starting with the most relevant:

Gap (between the magnet and the plate), because even a very small clearance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
Material composition – different alloys reacts the same. High carbon content worsen the attraction effect.
Surface structure – the smoother and more polished the plate, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
Operating temperature – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity was assessed with the use of a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, however under shearing force the load capacity is reduced by as much as fivefold. Moreover, even a slight gap between the magnet and the plate decreases the holding force.

Safe handling of NdFeB magnets

Implant safety

Patients with a pacemaker have to maintain an large gap from magnets. The magnetic field can disrupt the functioning of the life-saving device.

Fire risk

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

Keep away from computers

Powerful magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Maintain a gap of at least 10 cm.

Respect the power

Before use, read the rules. Sudden snapping can break the magnet or injure your hand. Think ahead.

Nickel coating and allergies

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If an allergic reaction occurs, cease handling magnets and wear gloves.

Danger to the youngest

Strictly keep magnets away from children. Choking hazard is high, and the consequences of magnets clamping inside the body are tragic.

Beware of splinters

Despite the nickel coating, the material is brittle and not impact-resistant. Do not hit, as the magnet may shatter into hazardous fragments.

Precision electronics

A strong magnetic field disrupts the operation of compasses in smartphones and GPS navigation. Keep magnets close to a device to prevent breaking the sensors.

Bodily injuries

Big blocks can smash fingers instantly. Never put your hand between two attracting surfaces.

Heat sensitivity

Watch the temperature. Heating the magnet above 80 degrees Celsius will destroy its properties and pulling force.

Security! Looking for details? Read our article: Are neodymium magnets dangerous?

MW 15x4 / N38 - cylindrical magnet

Product card - MW 15x4 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the product - data

Table 1: Static force (force vs gap) - interaction chart MW 15x4 / N38

Table 2: Shear hold (vertical surface) MW 15x4 / N38

Table 3: Vertical assembly (sliding) - vertical pull MW 15x4 / N38

Table 4: Material efficiency (saturation) - power losses MW 15x4 / N38

Table 5: Thermal stability (stability) - thermal limit MW 15x4 / N38

Table 6: Two magnets (repulsion) - field collision MW 15x4 / N38

Table 7: Protective zones (electronics) - warnings MW 15x4 / N38

Table 8: Dynamics (kinetic energy) - warning MW 15x4 / N38

Table 9: Surface protection spec MW 15x4 / N38

Table 10: Electrical data (Pc) MW 15x4 / N38

Table 11: Physics of underwater searching MW 15x4 / N38

1. Sliding resistance

2. Efficiency vs thickness

3. Temperature resistance

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

Material specification

Environmental data

Force (pull)

Field Strength

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Advantages as well as disadvantages of rare earth magnets.

Advantages

Weaknesses

Holding force characteristics

Maximum holding power of the magnet – what it depends on?

Lifting capacity in real conditions – factors

Safe handling of NdFeB magnets

Implant safety

Fire risk

Keep away from computers

Respect the power

Nickel coating and allergies

Danger to the youngest

Beware of splinters

Precision electronics

Bodily injuries

Heat sensitivity

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - interaction chart
MW 15x4 / N38

Table 2: Shear hold (vertical surface)
MW 15x4 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MW 15x4 / N38

Table 4: Material efficiency (saturation) - power losses
MW 15x4 / N38

Table 5: Thermal stability (stability) - thermal limit
MW 15x4 / N38

Table 6: Two magnets (repulsion) - field collision
MW 15x4 / N38

Table 7: Protective zones (electronics) - warnings
MW 15x4 / N38

Table 8: Dynamics (kinetic energy) - warning
MW 15x4 / N38

Table 9: Surface protection spec
MW 15x4 / N38

Table 10: Electrical data (P_c)
MW 15x4 / N38

Table 11: Physics of underwater searching
MW 15x4 / N38