Product available Ships tomorrow

MW 5x15 / 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: 1-6500
Rating: 5

cylindrical magnet

Catalog no 010084

GTIN: 5906301810834

5.00

Diameter Ø

5 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

2.21 g

Magnetization Direction

↑ axial

Load capacity

0.48 kg / 4.68 N

Magnetic Induction

610.03 mT / 6100 Gs

Coating

[NiCuNi] Nickel

1.107 ZŁ with VAT / pcs + price for transport

0.900 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

0.900 ZŁ

1.107 ZŁ

price from 700 pcs

0.846 ZŁ

1.041 ZŁ

price from 2800 pcs

0.792 ZŁ

0.974 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure about your choice?

Call us +48 22 499 98 98 otherwise drop us a message using our online form our website.
Force as well as appearance of a neodymium magnet can be analyzed with our our magnetic calculator.

Order by 14:00 and we’ll ship today!

MW 5x15 / N38 - cylindrical magnet

Specification / characteristics MW 5x15 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010084
GTIN	5906301810834
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	5 mm [±0,1 mm]
Height	15 mm [±0,1 mm]
Weight	2.21 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.48 kg / 4.68 N
Magnetic Induction ~ ?	610.03 mT / 6100 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x15 / N38 - cylindrical magnet

properties	values	units
remenance Br [Min. - Max.] ?	12.2-12.6	kGs
remenance Br [Min. - Max.] ?	1220-1260	T
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 106	°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 simulation of the assembly - report

The following values represent the direct effect of a physical simulation. Results rely on algorithms for the material NdFeB. Operational parameters might slightly deviate from the simulation results. Treat these calculations as a reference point during assembly planning.

Table 1: Static pull force (pull vs distance) - interaction chart
MW 5x15 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	6091 Gs 609.1 mT	0.48 kg / 480.0 g 4.7 N	low risk
1 mm	3823 Gs 382.3 mT	0.19 kg / 189.1 g 1.9 N	low risk
2 mm	2261 Gs 226.1 mT	0.07 kg / 66.1 g 0.6 N	low risk
3 mm	1378 Gs 137.8 mT	0.02 kg / 24.6 g 0.2 N	low risk
5 mm	607 Gs 60.7 mT	0.00 kg / 4.8 g 0.0 N	low risk
10 mm	154 Gs 15.4 mT	0.00 kg / 0.3 g 0.0 N	low risk
15 mm	63 Gs 6.3 mT	0.00 kg / 0.1 g 0.0 N	low risk
20 mm	32 Gs 3.2 mT	0.00 kg / 0.0 g 0.0 N	low risk
30 mm	12 Gs 1.2 mT	0.00 kg / 0.0 g 0.0 N	low risk
50 mm	3 Gs 0.3 mT	0.00 kg / 0.0 g 0.0 N	low risk

Pulling power decreases drastically with every subsequent millimeter of distance. Remember that even the smallest gap (e.g., contamination, varnish, rust) noticeably weakens the grip. Magnets operate most effectively in perfect adhesion; distance drastically cuts the force. Analyze how flashily the parameters fall, when the product does not adhere flatly to the metal substrate. When calculating the mounting, eliminate unnecessary gaps.

Table 2: Slippage Capacity (Wall)
MW 5x15 / N38

Distance (mm)	Friction coefficient	Pull Force (kg)
0 mm	Stal (~0.2)	0.10 kg / 96.0 g 0.9 N
1 mm	Stal (~0.2)	0.04 kg / 38.0 g 0.4 N
2 mm	Stal (~0.2)	0.01 kg / 14.0 g 0.1 N
3 mm	Stal (~0.2)	0.00 kg / 4.0 g 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N

The table below indicates the approximate shear load needed to cause the slippage of the magnet downwards on a upright metal surface (assuming typical friction coefficient). This value is a function of the distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 5x15 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.14 kg / 144.0 g 1.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.10 kg / 96.0 g 0.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.05 kg / 48.0 g 0.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.24 kg / 240.0 g 2.4 N

When hanging a magnet on a upright surface (e.g., a car body), it you can count on just approx. 20%-30% of its maximum pull force. Gravitational force as well as a low friction coefficient influence the fact that products slip faster than they detach. Planning a vertical fastening? Consider that the sliding force is much weaker than the perpendicular breakaway force. On a smooth steel, the holder will slide down under a significantly smaller weight. Application of an anti-slip layer can effectively increase the grip.

Table 4: Steel thickness (substrate influence) - power losses
MW 5x15 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	10%	0.05 kg / 48.0 g 0.5 N
1 mm	25%	0.12 kg / 120.0 g 1.2 N
2 mm	50%	0.24 kg / 240.0 g 2.4 N
5 mm	100%	0.48 kg / 480.0 g 4.7 N
10 mm	100%	0.48 kg / 480.0 g 4.7 N

A too thin steel is incapable of absorb the full magnetic flux, which squanders power of the holder. Should you attach a powerful product to a thin surface, the magnetism will penetrate right through and the pull force will drop sharply. To utilize 100% of this magnet's potential, you need a suitably thick backing of metal. The material oversaturation causes that on thin elements (e.g., thin profiles), the holder works worse. We advise picking the steel cross-section according to the table below.

Table 5: Working in heat (stability) - power drop
MW 5x15 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	0.48 kg / 480.0 g 4.7 N	OK
40 °C	-2.2%	0.47 kg / 469.4 g 4.6 N	OK
60 °C	-4.4%	0.46 kg / 458.9 g 4.5 N	OK
80 °C	-6.6%	0.45 kg / 448.3 g 4.4 N
100 °C	-28.8%	0.34 kg / 341.8 g 3.4 N

Classic neodymiums lose strength after exceeding the maximum temperature. Protect against heat – high temperature can irreversibly demagnetize this product. With increasing heat, the neodymium's capacity briefly lowers. Do not use this product close to ovens exceeding its operating temperature limit. Exceeding the critical threshold will lead to destruction of magnetic properties.

*Important note: Thermal stability is determined by both grade, but also on the magnet's shape. Low-profile magnets (low permeance coefficient) are more susceptible to demagnetization under lower heat stress than long magnets. The danger warning in the table points to permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - field range
MW 5x15 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	0.48 kg / 484 g 4.7 N 12 231 Gs	N/A
1 mm	0.19 kg / 189 g 1.9 N 9 810 Gs	0.17 kg / 170 g 1.7 N ~0 Gs
2 mm	0.07 kg / 66 g 0.6 N 7 646 Gs	0.06 kg / 60 g 0.6 N ~0 Gs
3 mm	0.02 kg / 25 g 0.2 N 5 880 Gs	0.02 kg / 22 g 0.2 N ~0 Gs
5 mm	0.00 kg / 5 g 0.0 N 3 507 Gs	0.00 kg / 0 g 0.0 N ~0 Gs
10 mm	0.00 kg / 0 g 0.0 N 1 213 Gs	0.00 kg / 0 g 0.0 N ~0 Gs
20 mm	0.00 kg / 0 g 0.0 N 309 Gs	0.00 kg / 0 g 0.0 N ~0 Gs
50 mm	0.00 kg / 0 g 0.0 N 37 Gs	0.00 kg / 0 g 0.0 N ~0 Gs

Two magnetic products interact from a wider radius than a neodymium and metal setup. Such a system of two magnets produces a massive flux and a larger range of operation. Planning to create a powerful holder? Apply two magnets instead of one magnet and a steel. Be careful that when connecting a pair of magnets, the impact force is extreme. The repulsion force is slightly lower than the connection force, but still significant.
*The magnetic induction for N-N configuration reaches ~0 Gs in the exact middle between the magnets (due to field cancellation).

Table 7: Protective zones (implants) - precautionary measures
MW 5x15 / N38

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

Extremely neodym field is a large risk to electronic devices as well as medical implants. These NdFeB products generate a flux that disrupts operation of digital equipment. Remember: the unseen radiation passes through tissues and housings. Exceptional care must be taken by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, car keys, speakers, and displays. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - warning
MW 5x15 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	14.87 km/h (4.13 m/s)	0.02 J
30 mm	25.74 km/h (7.15 m/s)	0.06 J
50 mm	33.23 km/h (9.23 m/s)	0.09 J
100 mm	47.00 km/h (13.06 m/s)	0.19 J

NdFeB products are very brittle – a collision with steel risks their cracking. Control the attraction moment – a neodymium left loose turns into a projectile. Impact energy can cause material chips or dangerous crushing to skin. Always hold the magnet during mounting so it doesn't hit violently against the steel surface. A collision at high speed means shattering of the magnet. Wear eye protection when playing with powerful specimens.

Table 9: Surface protection spec
MW 5x15 / N38

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

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

Table 10: Design data (Pc)
MW 5x15 / N38

Parameter	Value	Jedn. SI / Opis
Strumień (Flux)	1 382 Mx	13.8 µWb
Współczynnik Pc	1.38	Wysoki (Stabilny)

Total magnetic flux flowing through the pole face. Essential parameter for motor design and Hall effect devices. Permeance Coefficient defines the working geometry.

Table 11: Physics of underwater searching
MW 5x15 / N38

Environment	Effective steel pull	Effect
Air (land)	0.48 kg	Standard
Water (riverbed)	0.55 kg (+0.07 kg Buoyancy gain)	+14.5%

Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

Measurement Calculator

Magnet Pull Force

Force in kg

Newtons (N)

Pounds (lbs)

Magnetic Field

Induction (Gs)

Just populate a single box, and the converter calculate everything else for you.

SMZR 25x100 / N52 - magnetic separator with handle

307.50 ZŁ brutto / pcs

Product available Ships tomorrow

BM 550x180x70 [4x M8] - magnetic beam

5708.18 ZŁ brutto / pcs

Product available Ships tomorrow

MP 10x6x4 / N38 - ring magnet

0.898 ZŁ brutto / pcs

Product available Ships tomorrow

LM TLN - 20 R / N38 - magnetic leviton

400.00 ZŁ brutto / pcs

The presented product is an incredibly powerful cylinder magnet, manufactured from durable NdFeB material, which, with dimensions of Ø5x15 mm, guarantees the highest energy density. 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 impressive force (approx. 0.48 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 4.68 N with a weight of only 2.21 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., 5.1 mm) using epoxy glues. To ensure stability in automation, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most popular standard for professional neodymium magnets, offering a great economic balance and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø5x15), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

The presented product is a neodymium magnet with precisely defined parameters: diameter 5 mm and height 15 mm. The key parameter here is the holding force amounting to approximately 0.48 kg (force ~4.68 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 15 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 diametrically if your project requires it.

Advantages as well as disadvantages of NdFeB magnets.

Besides their tremendous pulling force, neodymium magnets offer the following advantages:

They retain full power for almost 10 years – the loss is just ~1% (based on simulations),
They are noted for resistance to demagnetization induced by external field influence,
In other words, due to the shiny layer of silver, the element is aesthetically pleasing,
Magnets possess very high magnetic induction on the active area,
Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
Possibility of accurate modeling as well as modifying to precise conditions,
Huge importance in electronics industry – they serve a role in computer drives, electromotive mechanisms, medical equipment, also modern systems.
Thanks to their power density, small magnets offer high operating force, with minimal size,

Disadvantages of NdFeB magnets:

At very strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
NdFeB magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (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 extremely resistant to heat
They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
We suggest a housing - magnetic mount, due to difficulties in producing threads inside the magnet and complicated forms.
Health risk related to microscopic parts of magnets are risky, in case of ingestion, which becomes key in the context of child safety. Additionally, small components of these devices can disrupt the diagnostic process medical in case of swallowing.
Due to expensive raw materials, their price is higher than average,

Maximum lifting capacity of the magnet – what affects it?

The lifting capacity listed is a measurement result conducted under the following configuration:

using a base made of low-carbon steel, acting as a circuit closing element
with a thickness no less than 10 mm
characterized by smoothness
without the slightest air gap between the magnet and steel
for force acting at a right angle (pull-off, not shear)
at ambient temperature approx. 20 degrees Celsius

Practical lifting capacity: influencing factors

It is worth knowing that the magnet holding may be lower subject to the following factors, starting with the most relevant:

Distance – the presence of foreign body (paint, tape, air) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
Direction of force – maximum parameter is reached only during pulling at a 90° angle. The shear force of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
Steel grade – ideal substrate is high-permeability steel. Hardened steels may attract less.
Surface condition – smooth surfaces ensure maximum contact, which improves 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.

* Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Additionally, even a small distance {between} the magnet and the plate decreases the holding force.

Precautions when working with NdFeB magnets

Medical interference

For implant holders: Powerful magnets affect medical devices. Keep at least 30 cm distance or request help to work with the magnets.

Protective goggles

Protect your eyes. Magnets can fracture upon violent connection, launching shards into the air. Wear goggles.

Safe distance

Intense magnetic fields can destroy records on credit cards, hard drives, and storage devices. Stay away of min. 10 cm.

Compass and GPS

GPS units and smartphones are highly susceptible to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Swallowing risk

Product intended for adults. Small elements pose a choking risk, leading to serious injuries. Keep away from children and animals.

Sensitization to coating

Studies show that the nickel plating (standard magnet coating) is a potent allergen. For allergy sufferers, prevent touching magnets with bare hands or opt for coated magnets.

Serious injuries

Pinching hazard: The pulling power is so great that it can cause hematomas, crushing, and even bone fractures. Use thick gloves.

Dust explosion hazard

Powder created during machining of magnets is combustible. Do not drill into magnets unless you are an expert.

Handling guide

Be careful. Neodymium magnets attract from a distance and snap with huge force, often faster than you can move away.

Maximum temperature

Watch the temperature. Heating the magnet to high heat will ruin its properties and strength.

Attention!

Need more info? Check our post: Why are neodymium magnets dangerous?

MW 5x15 / N38 - cylindrical magnet

MW 5x15 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the assembly - report

Magnet Pull Force

Magnetic Field

See also offers

SMZR 25x100 / N52 - magnetic separator with handle

BM 550x180x70 [4x M8] - magnetic beam

MP 10x6x4 / N38 - ring magnet

LM TLN - 20 R / N38 - magnetic leviton

Advantages as well as disadvantages of NdFeB magnets.

Maximum lifting capacity of the magnet – what affects it?

Practical lifting capacity: influencing factors

Precautions when working with NdFeB magnets

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C