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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

1.18 kg / 11.54 N

Magnetic Induction

610.03 mT

Coating

[NiCuNi] Nickel

1.107 ZŁ with VAT / pcs + price for transport

0.900 ZŁ net + 23% VAT / pcs

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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 ~ ?	1.18 kg / 11.54 N
Magnetic Induction ~ ?	610.03 mT
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

Physical analysis of the assembly - data

The following information represent the outcome of a mathematical simulation. Results rely on models for the class NdFeB. Operational performance might slightly deviate from the simulation results. Please consider these data as a supplementary guide during assembly planning.

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

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	6091 Gs 609.1 mT	1.18 kg / 1180.0 g 11.6 N	low risk
1 mm	3823 Gs 382.3 mT	0.46 kg / 464.9 g 4.6 N	low risk
2 mm	2261 Gs 226.1 mT	0.16 kg / 162.6 g 1.6 N	low risk
5 mm	607 Gs 60.7 mT	0.01 kg / 11.7 g 0.1 N	low risk
10 mm	154 Gs 15.4 mT	0.00 kg / 0.8 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

Magnetic force weakens drastically per each millimeter of spacing. Remember that even a very thin break (e.g., dirt, paint, dust) strongly diminishes the holding power. Magnets operate strongest at the point of direct contact; air break nullifies the power. Observe how quickly the parameters fall, when the magnet does not touch directly to the metal substrate. When planning the assembly, avoid redundant distances.

Table 2: Wall mounting (shearing) - vertical pull
MW 5x15 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.35 kg / 354.0 g 3.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.24 kg / 236.0 g 2.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.12 kg / 118.0 g 1.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.59 kg / 590.0 g 5.8 N

When mounting a magnet on a vertical wall (e.g., a car body), it you can count on only approx. 1/5 of its maximum pull force. Gravitational force and a weak degree of grip mean that holders 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 painted metal, the holder will slip down under a noticeably lighter weight. Using a rubber pad can significantly improve the result.

Table 3: Material efficiency (substrate influence) - power losses
MW 5x15 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	10%	0.12 kg / 118.0 g 1.2 N
1 mm	25%	0.30 kg / 295.0 g 2.9 N
2 mm	50%	0.59 kg / 590.0 g 5.8 N
5 mm	100%	1.18 kg / 1180.0 g 11.6 N
10 mm	100%	1.18 kg / 1180.0 g 11.6 N

A thin metal plate is not enough to conduct the full magnetic flux, which weakens actual performance of the magnet. If you mount a strong magnet to a thin surface, the magnetism will penetrate right through and the pull force will drop sharply. To utilize the maximum of this neodymium's power, you need a suitably thick piece of metal. The saturation phenomenon means that on thin elements (e.g., car bodies), the magnet shows lower pull force. We advise picking the steel dimension based on the following data.

Table 4: Thermal resistance (material behavior) - resistance threshold
MW 5x15 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	1.18 kg / 1180.0 g 11.6 N	OK
40 °C	-2.2%	1.15 kg / 1154.0 g 11.3 N	OK
60 °C	-4.4%	1.13 kg / 1128.1 g 11.1 N	OK
80 °C	-6.6%	1.10 kg / 1102.1 g 10.8 N
100 °C	-28.8%	0.84 kg / 840.2 g 8.2 N

Standard neodymium magnets change their properties power above the temperature limit. Watch out for overheating – excessive heat can permanently damage this magnet. With increasing heat, the magnet's force momentarily drops. Avoid using this product close to ovens higher than its safe range. Ignoring the limit will result in destruction of magnetic properties.

Table 5: Two magnets (repulsion) - forces in the system
MW 5x15 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	1.77 kg / 1770.0 g 17.4 N	N/A
2 mm	0.24 kg / 240.0 g 2.4 N	0.22 kg / 224.0 g 2.2 N
5 mm	0.02 kg / 15.0 g 0.1 N	0.01 kg / 14.0 g 0.1 N
10 mm	0.00 kg / 0.0 g 0.0 N	0.00 kg / 0.0 g 0.0 N
20 mm	0.00 kg / 0.0 g 0.0 N	0.00 kg / 0.0 g 0.0 N
50 mm	0.00 kg / 0.0 g 0.0 N	0.00 kg / 0.0 g 0.0 N

Two strong neodymiums interact from a wider radius than a magnet and steel setup. The setup of two magnets produces a massive flux and a larger range of performance. Designing a strong closure? Apply two magnets instead of one magnet and a steel. Be careful that when attracting two neodymiums, the impact force is extreme. The levitation is slightly lower than the connection force, but still significant.

Table 6: Protective zones (electronics) - 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
Mechanical watch	20 Gs (2.0 mT)	2.5 cm
Mobile device	40 Gs (4.0 mT)	2.0 cm
Remote	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 poses a large risk to electronics and medical implants. These magnets produce a field that disrupts operation of sensitive medical devices. Be aware: the unseen radiation passes through tissues and housings. Special caution must be exercised by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 7: Dynamics (kinetic energy) - collision effects
MW 5x15 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	23.31 km/h (6.48 m/s)	0.05 J
30 mm	40.36 km/h (11.21 m/s)	0.14 J
50 mm	52.11 km/h (14.47 m/s)	0.23 J
100 mm	73.69 km/h (20.47 m/s)	0.46 J

NdFeB products are delicate – a strong collision with metal can result in shattering. Pay attention to connection velocity – a magnet released freely turns into a projectile. Kinetic force can cause material chips or dangerous crushing to fingers. Hold the magnet firmly during bringing near metal so it doesn't hit violently against the steel surface. A collision at high speed ends with a crack of the neodymium. Use safety goggles when playing with powerful specimens.

Table 8: Corrosion resistance
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 following table defines the conditions under which this product can be safely used. Improper coating selection is the most common cause of magnet failure over time.

Table 9: Underwater work (magnet fishing)
MW 5x15 / N38

Environment	Effective steel pull	Effect
Air (land)	1.18 kg	Standard
Water (riverbed)	1.35 kg (+0.17 kg Buoyancy gain)	+14.5%

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

Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

MPL 12.5x12.5x5 / N38 - lamellar magnet

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150.00 ZŁ brutto / pcs

The offered product is an exceptionally strong cylindrical magnet, composed of modern NdFeB material, which, with dimensions of Ø5x15 mm, guarantees the highest energy density. The MW 5x15 / N38 component features high dimensional repeatability and industrial build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 1.18 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 11.54 N with a weight of only 2.21 g, this rod is indispensable in electronics and wherever low weight is crucial.

Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure long-term durability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most popular standard for industrial neodymium magnets, offering an optimal price-to-power ratio and operational stability. 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 1.18 kg (force ~11.54 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 oxidation, 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. 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 as well as weaknesses of neodymium magnets.

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

Their magnetic field is maintained, and after approximately ten years it decreases only by ~1% (according to research),
They feature excellent resistance to magnetism drop as a result of opposing magnetic fields,
A magnet with a metallic gold surface has an effective appearance,
Magnets have impressive magnetic induction on the outer side,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Thanks to flexibility in forming and the capacity to modify to unusual requirements,
Versatile presence in high-tech industry – they are commonly used in HDD drives, electric motors, advanced medical instruments, and technologically advanced constructions.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages of NdFeB magnets:

At very strong impacts they can crack, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
Neodymium magnets decrease 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
They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
Limited ability of producing threads in the magnet and complex forms - preferred is casing - magnet mounting.
Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. Additionally, small elements of these devices can disrupt the diagnostic process medical after entering the body.
With mass production the cost of neodymium magnets can be a barrier,

Maximum lifting force for a neodymium magnet – what affects it?

The specified lifting capacity concerns the limit force, obtained under laboratory conditions, specifically:

on a base made of structural steel, optimally conducting the magnetic flux
whose transverse dimension equals approx. 10 mm
characterized by smoothness
without any clearance between the magnet and steel
for force acting at a right angle (pull-off, not shear)
at ambient temperature approx. 20 degrees Celsius

Key elements affecting lifting force

It is worth knowing that the application force may be lower influenced by elements below, in order of importance:

Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
Force direction – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
Base massiveness – too thin plate does not close the flux, causing part of the flux to be escaped to the other side.
Chemical composition of the base – mild steel attracts best. Higher carbon content lower magnetic properties and holding force.
Plate texture – ground elements ensure maximum contact, which improves field saturation. Uneven metal reduce efficiency.
Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

* Lifting capacity was determined by applying a polished steel plate of optimal thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. In addition, even a minimal clearance {between} the magnet and the plate lowers the load capacity.

Warnings

Hand protection

Large magnets can smash fingers instantly. Do not place your hand betwixt two strong magnets.

Dust is flammable

Drilling and cutting of NdFeB material carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Electronic devices

Device Safety: Strong magnets can damage payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).

Thermal limits

Regular neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. This process is irreversible.

Nickel coating and allergies

It is widely known that nickel (standard magnet coating) is a potent allergen. For allergy sufferers, prevent direct skin contact and choose encased magnets.

Magnetic interference

Navigation devices and mobile phones are extremely susceptible to magnetism. Direct contact with a strong magnet can ruin the sensors in your phone.

Material brittleness

NdFeB magnets are sintered ceramics, meaning they are fragile like glass. Impact of two magnets will cause them cracking into small pieces.

Adults only

Only for adults. Tiny parts can be swallowed, leading to serious injuries. Store out of reach of kids and pets.

Medical interference

Patients with a pacemaker have to maintain an large gap from magnets. The magnetism can stop the operation of the implant.

Handling guide

Before starting, read the rules. Uncontrolled attraction can destroy the magnet or hurt your hand. Think ahead.

Important!

More info about risks in the article: Safety of working with magnets.

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

Physical analysis of the assembly - data

See also deals

MPL 12.5x12.5x5 / N38 - lamellar magnet

MPL 40x10x5x2[7/3.5] / N38 - lamellar magnet

XT-4 magnetyzery CO i WODY użytkowej - XT-4 magnetizer

UMP 67x28 [M8+M10] GW F120 Lina / N38 - search holder

Strengths as well as weaknesses of neodymium magnets.

Maximum lifting force for a neodymium magnet – what affects it?

Key elements affecting lifting force

Warnings

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C