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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

see parameters »

1.968 ZŁ with VAT / pcs + price for transport

1.600 ZŁ net + 23% VAT / pcs

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Technical parameters of the product - 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 analysis of the magnet - data

Presented data are the outcome of a physical analysis. Values are based on models for the class Nd₂Fe₁₄B. Actual conditions might slightly differ from theoretical values. Use these calculations as a supplementary guide for designers.

Table 1: Static pull force (pull vs distance) - characteristics
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	medium risk
1 mm	2620 Gs 262.0 mT	3.41 kg / 7.51 lbs 3408.2 g / 33.4 N	medium risk
2 mm	2276 Gs 227.6 mT	2.57 kg / 5.67 lbs 2571.6 g / 25.2 N	medium risk
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 drastically per each millimeter of distance. Note that even a very thin break (e.g., contamination, varnish, rust) strongly reduces the pull force. Magnetic products work strongest in perfect adhesion; air break nullifies the power. Notice how rapidly the parameters plummet, when the magnet does not touch flatly to the metal substrate. When planning the assembly, eliminate additional spacers.

Table 2: Sliding force (wall)
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 shows the estimated weight limit required to start the downward movement of the magnet downwards along a upright metal surface (assuming typical friction). The holding force is a function of the gap size between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
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 hanging a holder on a upright plane (e.g., a car body), it will maintain just about 1/5 of its nominal power. Gravity and a weak degree of grip influence the fact that magnets move down faster than they pull off. Want to create a vertical fastening? Note that the sliding force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the element will slip down under a noticeably lighter load. Application of an anti-slip pad can significantly increase the grip.

Table 4: Steel thickness (substrate influence) - 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 sheet cannot take in the entire magnetic field, which wastes potential of the magnet. If you install a neodymium to a weak sheet, the field will pass right through and the attraction force will be weaker. To achieve 100% of this magnet's power, you require a sufficiently solid piece of metal. The material oversaturation means that on thin elements (e.g., thin profiles), the holder holds weaker. We suggest choosing the steel dimension from these parameters.

Table 5: Working in heat (material behavior) - resistance threshold
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 parameters after exceeding the maximum temperature. Protect against heat – heat can irreversibly damage this product. With every degree above norm, the magnet's power briefly drops. Avoid using this magnet in hot environments higher than its safe range. Exceeding the critical threshold will result in destruction of magnetic properties.

*Engineering note: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low Pc) risk losing magnetic properties sooner than taller cylinders. The danger warning in the table points to permanent field degradation for this specific geometry.

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

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (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 strong neodymiums interact from a significantly greater distance than a magnet and sheet combination. Such a system of two magnets produces a massive flux and a wider radius of action. Want to build a powerful holder? Utilize two neodymiums instead of a neodymium and a steel. Remember that when connecting a pair of magnets, the pinch force is extreme. The levitation is a bit weaker than the attraction, but still large.
*Field value in repulsion mode reaches ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
Note: Calculations demonstrate sliding force of two identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - precautionary measures
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
Car key	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

A strong magnetic field is a real danger to electronics as well as medical implants. These NdFeB products generate a field that prevents correct functioning of sensitive medical devices. Be aware: the invisible magnetic field acts through matter and housings. Increased vigilance must be taken by people with cochlear implants and drug dispensers. The risk also applies to: automatic timepieces, remotes, speakers, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - 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

Neodymium magnets are prone to chipping – a collision with steel can result in shattering. Control the attraction moment – a neodymium left loose turns into a projectile. Striking energy can destroy the magnet or painful pinches to skin. Hold the magnet firmly during bringing near metal so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear safety glasses when working 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)

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

Table 10: Construction 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 magnet pole. Key data in coil applications and motors. The P_c coefficient determines the working geometry.

Table 11: Hydrostatics and buoyancy
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%

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

In water, the magnet feels stronger thanks to Archimedes' principle. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Shear force

*Note: On a vertical surface, the magnet holds merely a fraction of its perpendicular strength.

2. Steel thickness impact

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

3. Thermal stability

*For N38 grade, 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 and environmental data

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: 010030-2026

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MW 7x2 / N38 - cylindrical magnet

0.381 ZŁ brutto / pcs

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MW 12x4 / N38 - cylindrical magnet

1.353 ZŁ brutto / pcs

This product is an incredibly powerful cylindrical magnet, composed of durable NdFeB material, which, at dimensions of Ø15x4 mm, guarantees optimal power. This specific item features high dimensional repeatability and professional build quality, making it an ideal 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 quick order fulfillment. Furthermore, its 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 electric motors, advanced sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the high power of 41.38 N with a weight of only 5.3 g, this rod is indispensable in miniature devices and wherever every gram matters.

Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. 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 impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 4.22 kg (force ~41.38 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.

Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 15 mm. 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 rare earth magnets.

Strengths

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

They have unchanged lifting capacity, and over nearly ten years their performance decreases symbolically – ~1% (in testing),
Magnets very well resist against demagnetization caused by external fields,
Thanks to the metallic finish, the coating of nickel, gold, or silver-plated gives an clean appearance,
The surface of neodymium magnets generates a concentrated magnetic field – this is a key feature,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
Thanks to flexibility in constructing and the ability to modify to unusual requirements,
Key role in future technologies – they are used in hard drives, electric drive systems, diagnostic systems, also modern systems.
Thanks to their power density, small magnets offer high operating force, in miniature format,

Limitations

Characteristics of disadvantages of neodymium magnets and proposals for their use:

They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
NdFeB magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
We suggest casing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complex forms.
Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. It is also worth noting that small components of these products can complicate diagnosis medical in case of swallowing.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

Maximum magnetic pulling force – what affects it?

Information about lifting capacity was defined for ideal contact conditions, taking into account:

on a plate made of structural steel, optimally conducting the magnetic field
whose thickness is min. 10 mm
with an ground touching surface
with zero gap (no coatings)
under perpendicular application of breakaway force (90-degree angle)
in neutral thermal conditions

Determinants of lifting force in real conditions

Real force impacted by specific conditions, such as (from most important):

Space between magnet and steel – every millimeter of separation (caused e.g. by veneer or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
Material type – the best choice is pure iron steel. Cast iron may have worse magnetic properties.
Plate texture – ground elements ensure maximum contact, which improves field saturation. Uneven metal reduce efficiency.
Heat – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the load capacity is reduced by as much as 5 times. In addition, even a slight gap between the magnet and the plate lowers the holding force.

Warnings

Keep away from computers

Avoid bringing magnets close to a wallet, computer, or screen. The magnetic field can permanently damage these devices and wipe information from cards.

No play value

These products are not toys. Accidental ingestion of multiple magnets may result in them attracting across intestines, which poses a severe health hazard and requires urgent medical intervention.

Bone fractures

Big blocks can crush fingers instantly. Do not put your hand betwixt two attracting surfaces.

Precision electronics

An intense magnetic field negatively affects the operation of magnetometers in smartphones and navigation systems. Do not bring magnets near a device to prevent breaking the sensors.

Thermal limits

Monitor thermal conditions. Exposing the magnet to high heat will destroy its properties and pulling force.

Eye protection

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

Danger to pacemakers

Individuals with a pacemaker should maintain an safe separation from magnets. The magnetic field can disrupt the operation of the implant.

Warning for allergy sufferers

Some people have a sensitization to Ni, which is the common plating for NdFeB magnets. Extended handling might lead to an allergic reaction. We suggest wear protective gloves.

Fire risk

Fire hazard: Rare earth powder is highly flammable. Do not process magnets in home conditions as this may cause fire.

Safe operation

Before use, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.

Security! Looking for details? Check our post: Are neodymium magnets dangerous?

MW 15x4 / N38 - cylindrical magnet

Technical parameters of the product - MW 15x4 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the magnet - data

Table 1: Static pull force (pull vs distance) - characteristics MW 15x4 / N38

Table 2: Sliding force (wall) MW 15x4 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MW 15x4 / N38

Table 4: Steel thickness (substrate influence) - power losses MW 15x4 / N38

Table 5: Working in heat (material behavior) - resistance threshold MW 15x4 / N38

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

Table 7: Protective zones (implants) - precautionary measures MW 15x4 / N38

Table 8: Impact energy (cracking risk) - warning MW 15x4 / N38

Table 9: Surface protection spec MW 15x4 / N38

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

Table 11: Hydrostatics and buoyancy MW 15x4 / N38

1. Shear force

2. Steel thickness impact

3. Thermal stability

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

Chemical composition

Sustainability

Magnet pull force

Magnetic Field

See also proposals

SM 25x150 [2xM8] / N52 - magnetic separator

MW 7x2 / N38 - cylindrical magnet

SM 32x125 [2xM8] / N42 - magnetic separator

MW 12x4 / N38 - cylindrical magnet

Strengths and weaknesses of rare earth magnets.

Strengths

Limitations

Holding force characteristics

Maximum magnetic pulling force – what affects it?

Determinants of lifting force in real conditions

Warnings

Keep away from computers

No play value

Bone fractures

Precision electronics

Thermal limits

Eye protection

Danger to pacemakers

Warning for allergy sufferers

Fire risk

Safe operation

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - characteristics
MW 15x4 / N38

Table 2: Sliding force (wall)
MW 15x4 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 15x4 / N38

Table 4: Steel thickness (substrate influence) - power losses
MW 15x4 / N38

Table 5: Working in heat (material behavior) - resistance threshold
MW 15x4 / N38

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

Table 7: Protective zones (implants) - precautionary measures
MW 15x4 / N38

Table 8: Impact energy (cracking risk) - warning
MW 15x4 / N38

Table 9: Surface protection spec
MW 15x4 / N38

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

Table 11: Hydrostatics and buoyancy
MW 15x4 / N38