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MW 5x30 / 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 010088

GTIN/EAN: 5906301810872

5.00

Diameter Ø

5 mm [±0,1 mm]

Height

30 mm [±0,1 mm]

Weight

4.42 g

Magnetization Direction

↑ axial

Load capacity

0.45 kg / 4.40 N

Magnetic Induction

616.32 mT / 6163 Gs

Coating

[NiCuNi] Nickel

see technical data »

3.57 ZŁ with VAT / pcs + price for transport

2.90 ZŁ net + 23% VAT / pcs

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Call us +48 888 99 98 98 otherwise contact us through form the contact page.
Parameters as well as structure of a neodymium magnet can be verified using our online calculation tool.

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Product card - MW 5x30 / N38 - cylindrical magnet

Specification / characteristics - MW 5x30 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010088
GTIN/EAN	5906301810872
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	30 mm [±0,1 mm]
Weight	4.42 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.45 kg / 4.40 N
Magnetic Induction ~ ?	616.32 mT / 6163 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x30 / 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 analysis of the magnet - report

The following information represent the outcome of a physical calculation. Values are based on models for the class Nd₂Fe₁₄B. Actual performance might slightly differ from theoretical values. Use these data as a supplementary guide for designers.

Table 1: Static pull force (force vs distance) - characteristics
MW 5x30 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	6154 Gs 615.4 mT	0.45 kg / 0.99 lbs 450.0 g / 4.4 N	weak grip
1 mm	3877 Gs 387.7 mT	0.18 kg / 0.39 lbs 178.6 g / 1.8 N	weak grip
2 mm	2308 Gs 230.8 mT	0.06 kg / 0.14 lbs 63.3 g / 0.6 N	weak grip
3 mm	1419 Gs 141.9 mT	0.02 kg / 0.05 lbs 23.9 g / 0.2 N	weak grip
5 mm	639 Gs 63.9 mT	0.00 kg / 0.01 lbs 4.8 g / 0.0 N	weak grip
10 mm	173 Gs 17.3 mT	0.00 kg / 0.00 lbs 0.4 g / 0.0 N	weak grip
15 mm	75 Gs 7.5 mT	0.00 kg / 0.00 lbs 0.1 g / 0.0 N	weak grip
20 mm	40 Gs 4.0 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	weak grip
30 mm	16 Gs 1.6 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	weak grip
50 mm	5 Gs 0.5 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	weak grip

Magnetic force drops significantly with every subsequent millimeter of distance. Note that even a microscopic distance (e.g., dirt, varnish, dust) noticeably diminishes the holding power. Magnetic products hold optimally in perfect adhesion; air break weakens the force. Observe how quickly the pull force drop, when the magnet does not touch tightly to the steel surface. When planning the arrangement, avoid unnecessary gaps.

Table 2: Sliding load (vertical surface)
MW 5x30 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.09 kg / 0.20 lbs 90.0 g / 0.9 N
1 mm	Stal (~0.2)	0.04 kg / 0.08 lbs 36.0 g / 0.4 N
2 mm	Stal (~0.2)	0.01 kg / 0.03 lbs 12.0 g / 0.1 N
3 mm	Stal (~0.2)	0.00 kg / 0.01 lbs 4.0 g / 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 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 theoretical weight limit required to start the downward movement of the magnet vertically along a vertical steel wall (assuming typical friction). This value depends on the gap size between the magnet and the surface.

Table 3: Vertical assembly (shearing) - vertical pull
MW 5x30 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.14 kg / 0.30 lbs 135.0 g / 1.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.09 kg / 0.20 lbs 90.0 g / 0.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.05 kg / 0.10 lbs 45.0 g / 0.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.23 kg / 0.50 lbs 225.0 g / 2.2 N

When placing a element on a upright surface (e.g., a car body), it will maintain barely about 20%-30% of its maximum pull force. Gravitational force and a low friction coefficient cause that products move down faster than they pop off the substrate. Designing a vertical fastening? Consider that the sliding force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will slip down under a noticeably lighter cargo. Using a rubber pad can drastically raise the stability.

Table 4: Steel thickness (saturation) - power losses
MW 5x30 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.05 kg / 0.10 lbs 45.0 g / 0.4 N
1 mm	25%	0.11 kg / 0.25 lbs 112.5 g / 1.1 N
2 mm	50%	0.23 kg / 0.50 lbs 225.0 g / 2.2 N
3 mm	75%	0.34 kg / 0.74 lbs 337.5 g / 3.3 N
5 mm	100%	0.45 kg / 0.99 lbs 450.0 g / 4.4 N
10 mm	100%	0.45 kg / 0.99 lbs 450.0 g / 4.4 N
11 mm	100%	0.45 kg / 0.99 lbs 450.0 g / 4.4 N
12 mm	100%	0.45 kg / 0.99 lbs 450.0 g / 4.4 N

A too thin steel cannot conduct the full magnetic flux, which squanders power of the magnet. Should you mount a strong magnet to a thin surface, the field will penetrate right through and the attraction force will be weaker. To utilize 100% of this magnet's power, you require a sufficiently solid piece of metal. The saturation effect causes that on delicate walls (e.g., car bodies), the holder works worse. We recommend selecting the steel thickness according to the table below.

Table 5: Thermal resistance (stability) - thermal limit
MW 5x30 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.45 kg / 0.99 lbs 450.0 g / 4.4 N	OK
40 °C	-2.2%	0.44 kg / 0.97 lbs 440.1 g / 4.3 N	OK
60 °C	-4.4%	0.43 kg / 0.95 lbs 430.2 g / 4.2 N	OK
80 °C	-6.6%	0.42 kg / 0.93 lbs 420.3 g / 4.1 N
100 °C	-28.8%	0.32 kg / 0.71 lbs 320.4 g / 3.1 N

Standard neodymium magnets irreversibly lose parameters after exceeding the maximum temperature. Watch out for overheating – excessive heat can irreversibly demagnetize this magnet. As the temperature rises, the magnet's capacity briefly drops. Refrain from using this magnet in hot environments exceeding its safe range. Exceeding the critical threshold will result in destruction of magnetic properties.

*Engineering note: Thermal stability is determined by both grade, but also on the magnet's shape. Low-profile magnets (pancake types) risk losing magnetic properties under lower heat stress compared to rod magnets. The danger warning in the table indicates a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - field collision
MW 5x30 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	4.58 kg / 10.11 lbs 6 170 Gs	0.69 kg / 1.52 lbs 688 g / 6.7 N	N/A
1 mm	2.98 kg / 6.57 lbs 9 927 Gs	0.45 kg / 0.99 lbs 447 g / 4.4 N	2.68 kg / 5.92 lbs ~0 Gs
2 mm	1.82 kg / 4.01 lbs 7 755 Gs	0.27 kg / 0.60 lbs 273 g / 2.7 N	1.64 kg / 3.61 lbs ~0 Gs
3 mm	1.08 kg / 2.39 lbs 5 981 Gs	0.16 kg / 0.36 lbs 162 g / 1.6 N	0.97 kg / 2.15 lbs ~0 Gs
5 mm	0.39 kg / 0.86 lbs 3 595 Gs	0.06 kg / 0.13 lbs 59 g / 0.6 N	0.35 kg / 0.78 lbs ~0 Gs
10 mm	0.05 kg / 0.11 lbs 1 278 Gs	0.01 kg / 0.02 lbs 7 g / 0.1 N	0.04 kg / 0.10 lbs ~0 Gs
20 mm	0.00 kg / 0.01 lbs 346 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
50 mm	0.00 kg / 0.00 lbs 49 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
60 mm	0.00 kg / 0.00 lbs 32 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 22 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 16 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 12 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 9 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 significantly greater distance than a magnet and sheet combination. The connection of two magnets creates a more powerful interaction and a further horizon of action. Designing a solid fastener? Use a pair of magnets instead of a neodymium and a striker plate. Be careful that when bringing together two magnets, the pinch force is extreme. The levitation is a bit weaker than the connection force, but still large.
*The magnetic induction between like poles reaches ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
Attention: Results show shear force of dual identical magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - precautionary measures
MW 5x30 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	5.0 cm
Hearing aid	10 Gs (1.0 mT)	4.0 cm
Mechanical watch	20 Gs (2.0 mT)	3.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	2.5 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

Powerful magnet radiation poses a serious hazard to IT equipment and pacemakers. These magnets generate a flux that prevents correct functioning of sensitive medical devices. Remember: the unseen radiation passes through tissues and glass. Exceptional care must be taken by people with cochlear implants and drug dispensers. Also at risk are: mechanical watches, remotes, membranes, and screens. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - collision effects
MW 5x30 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	10.18 km/h (2.83 m/s)	0.02 J
30 mm	17.63 km/h (4.90 m/s)	0.05 J
50 mm	22.75 km/h (6.32 m/s)	0.09 J
100 mm	32.18 km/h (8.94 m/s)	0.18 J

Magnetic elements are delicate – a violent impact against metal can result in shattering. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Striking energy can trigger coating fragments or injury to skin. Hold the magnet firmly during mounting so it doesn't hit with great force against the steel surface. A collision at high speed means shattering of the neodymium. Use safety goggles when playing with large magnets.

Table 9: Corrosion resistance
MW 5x30 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (P_c)
MW 5x30 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	1 468 Mx	14.7 µWb
P_c Coefficient	1.59	High (Stable)

Flux value passing through the pole surface. Essential parameter for generator designers as well as sensors. The P_c coefficient determines the magnet's operating point.

Table 11: Submerged application
MW 5x30 / N38

Environment	Effective steel pull	Effect
Air (land)	0.45 kg	Standard
Water (riverbed)	0.52 kg (+0.07 kg buoyancy gain)	+14.5%

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

1. Wall mount (shear)

*Warning: On a vertical surface, the magnet holds merely a fraction of its nominal pull.

2. Plate thickness effect

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

3. Temperature resistance

*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) = 1.59

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

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: 010088-2026

Measurement Calculator

Force (pull)

Kilograms (kg)

Newtons (N)

Pounds (lbs)

Field Strength

Gauss (Gs)

Put your value in just one slot to generate results in the other fields at once.

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MP 40x20x5 / N38 - ring magnet

12.24 ZŁ brutto / pcs

The presented product is an extremely powerful cylindrical magnet, manufactured from advanced NdFeB material, which, with dimensions of Ø5x30 mm, guarantees optimal power. The MW 5x30 / N38 model is characterized by an accuracy of ±0.1mm and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a magnetic rod with impressive force (approx. 0.45 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 4.40 N with a weight of only 4.42 g, this rod is indispensable in miniature devices and wherever every gram matters.

Since our magnets have a tolerance of ±0.1mm, the best method is to glue them into holes with a slightly larger diameter (e.g., 5.1 mm) using two-component epoxy glues. To ensure long-term durability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.

Magnets NdFeB grade N38 are suitable for 90% of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø5x30), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 5 mm and height 30 mm. The key parameter here is the holding force amounting to approximately 0.45 kg (force ~4.40 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 30 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is most desirable 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:

They virtually do not lose power, because even after 10 years the performance loss is only ~1% (according to literature),
They maintain their magnetic properties even under close interference source,
The use of an refined coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
Neodymium magnets ensure maximum magnetic induction on a contact point, which ensures high operational effectiveness,
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...
Considering the option of free forming and customization to specialized solutions, NdFeB magnets can be modeled in a wide range of geometric configurations, which expands the range of possible applications,
Huge importance in modern industrial fields – they find application in magnetic memories, motor assemblies, diagnostic systems, and technologically advanced constructions.
Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in small systems

Limitations

Disadvantages of neodymium magnets:

To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
We suggest a housing - magnetic holder, due to difficulties in producing nuts inside the magnet and complex shapes.
Health risk related to microscopic parts of magnets can be dangerous, if swallowed, which is particularly important in the context of child safety. It is also worth noting that small components of these devices are able to 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

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

The force parameter is a theoretical maximum value executed under the following configuration:

with the application of a yoke made of special test steel, guaranteeing full magnetic saturation
possessing a massiveness of at least 10 mm to ensure full flux closure
with a plane free of scratches
under conditions of gap-free contact (surface-to-surface)
under axial application of breakaway force (90-degree angle)
in neutral thermal conditions

What influences lifting capacity in practice

Effective lifting capacity impacted by specific conditions, including (from priority):

Space between magnet and steel – every millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
Load vector – maximum parameter is available only during pulling at a 90° angle. The shear force of the magnet along the surface is usually several times lower (approx. 1/5 of the lifting capacity).
Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
Chemical composition of the base – low-carbon steel gives the best results. Higher carbon content decrease magnetic properties and holding force.
Surface condition – smooth surfaces guarantee perfect abutment, which improves field saturation. Rough surfaces weaken the grip.
Thermal environment – heating the magnet causes a temporary drop of force. It is worth remembering the thermal limit for a given model.

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate reduces the load capacity.

Precautions when working with neodymium magnets

Immense force

Exercise caution. Rare earth magnets act from a long distance and connect with massive power, often quicker than you can move away.

Magnet fragility

NdFeB magnets are sintered ceramics, which means they are fragile like glass. Collision of two magnets leads to them breaking into small pieces.

Allergic reactions

Some people have a hypersensitivity to Ni, which is the typical protective layer for NdFeB magnets. Extended handling might lead to dermatitis. We recommend wear protective gloves.

Medical interference

People with a heart stimulator should keep an large gap from magnets. The magnetic field can interfere with the functioning of the life-saving device.

Magnetic interference

Note: neodymium magnets generate a field that disrupts precision electronics. Maintain a separation from your phone, tablet, and GPS.

Serious injuries

Protect your hands. Two powerful magnets will join immediately with a force of massive weight, destroying anything in their path. Exercise extreme caution!

Do not give to children

Always store magnets away from children. Choking hazard is significant, and the effects of magnets connecting inside the body are very dangerous.

Dust explosion hazard

Drilling and cutting of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Power loss in heat

Monitor thermal conditions. Exposing the magnet to high heat will destroy its magnetic structure and strength.

Protect data

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

Safety First! Want to know more? Check our post: Are neodymium magnets dangerous?

MW 5x30 / N38 - cylindrical magnet

Product card - MW 5x30 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the magnet - report

Table 1: Static pull force (force vs distance) - characteristics MW 5x30 / N38

Table 2: Sliding load (vertical surface) MW 5x30 / N38

Table 3: Vertical assembly (shearing) - vertical pull MW 5x30 / N38

Table 4: Steel thickness (saturation) - power losses MW 5x30 / N38

Table 5: Thermal resistance (stability) - thermal limit MW 5x30 / N38

Table 6: Two magnets (repulsion) - field collision MW 5x30 / N38

Table 7: Safety (HSE) (implants) - precautionary measures MW 5x30 / N38

Table 8: Dynamics (cracking risk) - collision effects MW 5x30 / N38

Table 9: Corrosion resistance MW 5x30 / N38

Table 10: Electrical data (Pc) MW 5x30 / N38

Table 11: Submerged application MW 5x30 / N38

1. Wall mount (shear)

2. Plate thickness effect

3. Temperature resistance

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

Material specification

Environmental data

Force (pull)

Field Strength

See also products

MP 30x7/3x3 / N38 - ring magnet

UMT 12x20 black set / N38 - board holder

UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external thread

MP 40x20x5 / N38 - ring magnet

Strengths and weaknesses of neodymium magnets.

Pros

Limitations

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

What influences lifting capacity in practice

Precautions when working with neodymium magnets

Immense force

Magnet fragility

Allergic reactions

Medical interference

Magnetic interference

Serious injuries

Do not give to children

Dust explosion hazard

Power loss in heat

Protect data

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - characteristics
MW 5x30 / N38

Table 2: Sliding load (vertical surface)
MW 5x30 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MW 5x30 / N38

Table 4: Steel thickness (saturation) - power losses
MW 5x30 / N38

Table 5: Thermal resistance (stability) - thermal limit
MW 5x30 / N38

Table 6: Two magnets (repulsion) - field collision
MW 5x30 / N38

Table 7: Safety (HSE) (implants) - precautionary measures
MW 5x30 / N38

Table 8: Dynamics (cracking risk) - collision effects
MW 5x30 / N38

Table 9: Corrosion resistance
MW 5x30 / N38

Table 10: Electrical data (P_c)
MW 5x30 / N38

Table 11: Submerged application
MW 5x30 / N38