Product available Ships today (order by 14:00)

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

bulk discounts:

Need more?

price from 1 pcs

1.600 ZŁ

1.968 ZŁ

price from 400 pcs

1.504 ZŁ

1.850 ZŁ

price from 1600 pcs

1.408 ZŁ

1.732 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure about your choice?

Contact us by phone +48 888 99 98 98 alternatively drop us a message by means of request form through our site.
Strength and shape of a neodymium magnet can be analyzed with our modular calculator.

Same-day shipping for orders placed before 14:00.

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

Technical modeling of the magnet - technical parameters

The following information are the outcome of a mathematical calculation. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Operational performance may deviate from the simulation results. Please consider these calculations as a reference point during assembly planning.

Table 1: Static force (pull vs gap) - power drop
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	safe
5 mm	1324 Gs 132.4 mT	0.87 kg / 1.92 lbs 870.3 g / 8.5 N	safe
10 mm	505 Gs 50.5 mT	0.13 kg / 0.28 lbs 126.7 g / 1.2 N	safe
15 mm	222 Gs 22.2 mT	0.02 kg / 0.05 lbs 24.4 g / 0.2 N	safe
20 mm	113 Gs 11.3 mT	0.01 kg / 0.01 lbs 6.3 g / 0.1 N	safe
30 mm	40 Gs 4.0 mT	0.00 kg / 0.00 lbs 0.8 g / 0.0 N	safe
50 mm	10 Gs 1.0 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	safe

Magnetic force weakens drastically per each millimeter of spacing. Note that even a microscopic distance (e.g., contamination, paint, rust) significantly weakens the grip. Magnets hold strongest at the point of direct contact; air break kills the power. Analyze how quickly the pull force drop, when the magnet does not adhere flatly to the metal substrate. When calculating the arrangement, avoid additional spacers.

Table 2: Slippage capacity (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 presents the estimated shear load necessary to cause the shifting of the magnet downwards along a upright steel plate (considering standard friction). This parameter is relative to the separation distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - 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 element on a vertical plane (e.g., a fridge), it you can count on barely about 1/5 of its nominal power. Gravitational force and a weak degree of grip influence the fact that products slide down easier than they pop off the substrate. Want to create a vertical fastening? Remember that the shear force is much weaker than the perpendicular breakaway force. On a slippery surface, the holder will give way down under a significantly smaller cargo. Application of an anti-slip layer can drastically improve the result.

Table 4: Material efficiency (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. Should you attach a powerful product to a weak sheet, the magnetism will pass right through and the holding will be smaller. To utilize 100% of this neodymium's potential, you require a sufficiently solid element of steel. The material oversaturation means that on thin elements (e.g., thin profiles), the product works worse. We advise picking the steel dimension based on the following data.

Table 5: Thermal stability (material behavior) - 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

Classic neodymiums irreversibly lose strength past the thermal threshold. Avoid high temperatures – heat can permanently destroy this magnet. With every degree above norm, the magnet's capacity temporarily drops. Avoid using this product in hot environments higher than its safe range. Too high temperature will cause destruction of magnetic properties.

*Engineering note: Heat tolerance is determined by both grade, but also on the magnet's shape. Thin magnets (low Pc) may lose charge permanently under lower heat stress compared to rod magnets. Warning indicator in the table signals a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 15x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear 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 interact from a much further distance than a neodymium and metal setup. The setup of magnet-to-magnet generates a stronger field and a larger range of performance. Planning to create a strong closure? Use a pair of magnets instead of a neodymium and a steel. Be careful that when connecting a pair of magnets, the collision energy is huge. The levitation is marginally weaker than the connection force, but still impressive.
*The magnetic induction in repulsion mode reaches ~0 Gs at the midpoint of the gap (resulting from vector opposition).
* Figures apply to friction force of a pair of same magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (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
Timepiece	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 is a real danger to electronic devices and pacemakers. These magnets produce a flux that prevents correct functioning of digital equipment. Be aware: the invisible magnetic field penetrates the body and plastic. Special caution must be exercised by people with hearing aids and drug dispensers. Also at risk are: automatic timepieces, remotes, speakers, and displays. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

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 violent impact against metal causes immediate chipping. Pay attention to connection velocity – a magnet released freely speeds with massive force. Striking energy can destroy the magnet or dangerous crushing to fingers. Always hold the magnet during bringing near metal so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear safety glasses 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

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

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

Flux value emitted by the magnet pole. Essential parameter in coil applications as well as sensors. P_c value determines 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%

Rust risk: 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. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

*Caution: On a vertical wall, the magnet holds merely approx. 20-30% of its max power.

2. Steel saturation

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

3. Thermal stability

*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) = 0.37

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

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%

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

Magnet pull force

Force in kg

Force (N)

Pounds (lbs)

Magnetic Induction

Tesla (T)

Input your value in a single field to receive results for the other fields right away.

Check out also proposals

Product available Ships today (order by 14:00)

MW 35x5 / N38 - cylindrical magnet

13.81 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MPL 50x30x4 / N38 - lamellar magnet

25.83 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

NC NeoCube 5 mm kwadraty / N38 - neocube

49.99 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MPL 20x10x1 / N38 - lamellar magnet

0.996 ZŁ brutto / pcs

The presented product is a very strong cylindrical magnet, composed of modern NdFeB material, which, with dimensions of Ø15x4 mm, guarantees maximum efficiency. This specific item is characterized by high dimensional repeatability and industrial build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with significant force (approx. 4.22 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Moreover, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. 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.

Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 15.1 mm) using epoxy glues. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most popular standard for professional neodymium magnets, offering a great economic balance and operational stability. If you need even stronger 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 lifting capacity 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. Such an arrangement is standard when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. 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 magnetic performance, neodymium magnets are valued for these benefits:

Their strength remains stable, and after approximately ten years it decreases only by ~1% (according to research),
They feature excellent resistance to magnetism drop when exposed to external fields,
A magnet with a shiny silver surface has better aesthetics,
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 form) even at a temperature of 230°C or more...
Thanks to flexibility in designing and the ability to customize to client solutions,
Significant place in modern technologies – they are commonly used in HDD drives, drive modules, advanced medical instruments, and other advanced devices.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Limitations

Cons of neodymium magnets and proposals for their use:

At strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
Neodymium magnets lose their power 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 durability 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 those in rubber or plastics, which secure oxidation and corrosion.
We recommend casing - magnetic mount, due to difficulties in realizing nuts inside the magnet and complex forms.
Potential hazard related to microscopic parts of magnets are risky, if swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, tiny parts of these devices can disrupt the diagnostic process medical in case of swallowing.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Detachment force of the magnet in optimal conditions – what affects it?

Magnet power was determined for the most favorable conditions, including:

using a plate made of high-permeability steel, functioning as a circuit closing element
possessing a massiveness of minimum 10 mm to ensure full flux closure
characterized by lack of roughness
with direct contact (without paint)
under vertical application of breakaway force (90-degree angle)
at temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

Please note that the working load may be lower influenced by the following factors, starting with the most relevant:

Distance – existence of foreign body (paint, dirt, air) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
Angle of force application – maximum parameter is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
Base massiveness – too thin steel causes magnetic saturation, causing part of the flux to be escaped to the other side.
Steel grade – the best choice is high-permeability steel. Hardened steels may generate lower lifting capacity.
Surface condition – smooth surfaces guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
Operating temperature – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was determined by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, however under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.

Safe handling of neodymium magnets

Dust is flammable

Dust produced during machining of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Respect the power

Use magnets with awareness. Their powerful strength can shock even professionals. Stay alert and do not underestimate their force.

Hand protection

Mind your fingers. Two powerful magnets will join instantly with a force of several hundred kilograms, crushing everything in their path. Exercise extreme caution!

Allergy Warning

Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If skin irritation occurs, immediately stop handling magnets and use protective gear.

ICD Warning

People with a pacemaker should keep an safe separation from magnets. The magnetism can interfere with the operation of the life-saving device.

Keep away from computers

Intense magnetic fields can erase data on payment cards, hard drives, and other magnetic media. Stay away of at least 10 cm.

Danger to the youngest

Only for adults. Tiny parts pose a choking risk, causing serious injuries. Store away from kids and pets.

Threat to navigation

Remember: neodymium magnets produce a field that interferes with sensitive sensors. Keep a safe distance from your mobile, tablet, and GPS.

Eye protection

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

Permanent damage

Do not overheat. NdFeB magnets are sensitive to heat. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).

Safety First! More info about risks in the article: Magnet Safety Guide.

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

Technical modeling of the magnet - technical parameters

Table 1: Static force (pull vs gap) - power drop MW 15x4 / N38

Table 2: Slippage capacity (vertical surface) MW 15x4 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MW 15x4 / N38

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

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

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system MW 15x4 / N38

Table 7: Safety (HSE) (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 (Flux) MW 15x4 / N38

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

1. Vertical hold

2. Steel saturation

3. Thermal stability

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

Elemental analysis

Environmental data

Magnet pull force

Magnetic Induction

Check out also proposals

MW 35x5 / N38 - cylindrical magnet

MPL 50x30x4 / N38 - lamellar magnet

NC NeoCube 5 mm kwadraty / N38 - neocube

MPL 20x10x1 / N38 - lamellar magnet

Strengths and weaknesses of neodymium magnets.

Pros

Limitations

Pull force analysis

Detachment force of the magnet in optimal conditions – what affects it?

Magnet lifting force in use – key factors

Safe handling of neodymium magnets

Dust is flammable

Respect the power

Hand protection

Allergy Warning

ICD Warning

Keep away from computers

Danger to the youngest

Threat to navigation

Eye protection

Permanent damage

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - power drop
MW 15x4 / N38

Table 2: Slippage capacity (vertical surface)
MW 15x4 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 15x4 / N38

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

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

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 15x4 / N38

Table 7: Safety (HSE) (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 (Flux)
MW 15x4 / N38

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