Product available Ships today (order by 14:00)

MW 5x25 / 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 010086

GTIN/EAN: 5906301810858

5.00

Diameter Ø

5 mm [±0,1 mm]

Height

25 mm [±0,1 mm]

Weight

3.68 g

Magnetization Direction

↑ axial

Load capacity

0.45 kg / 4.41 N

Magnetic Induction

615.39 mT / 6154 Gs

Coating

[NiCuNi] Nickel

view technical specifications »

2.31 ZŁ with VAT / pcs + price for transport

1.880 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

1.880 ZŁ

2.31 ZŁ

price from 350 pcs

1.767 ZŁ

2.17 ZŁ

price from 1350 pcs

1.654 ZŁ

2.03 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Need help making a decision?

Contact us by phone +48 22 499 98 98 otherwise drop us a message through our online form through our site.
Parameters as well as form of a magnet can be verified with our online calculation tool.

Orders submitted before 14:00 will be dispatched today!

Product card - MW 5x25 / N38 - cylindrical magnet

Specification / characteristics - MW 5x25 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010086
GTIN/EAN	5906301810858
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	25 mm [±0,1 mm]
Weight	3.68 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.45 kg / 4.41 N
Magnetic Induction ~ ?	615.39 mT / 6154 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x25 / 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

Physical analysis of the product - data

Presented information represent the direct effect of a mathematical simulation. Values are based on models for the material Nd₂Fe₁₄B. Actual performance may differ. Use these data as a reference point during assembly planning.

Table 1: Static pull force (force vs gap) - characteristics
MW 5x25 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	6144 Gs 614.4 mT	0.45 kg / 0.99 LBS 450.0 g / 4.4 N	low risk
1 mm	3869 Gs 386.9 mT	0.18 kg / 0.39 LBS 178.4 g / 1.8 N	low risk
2 mm	2300 Gs 230.0 mT	0.06 kg / 0.14 LBS 63.1 g / 0.6 N	low risk
3 mm	1412 Gs 141.2 mT	0.02 kg / 0.05 LBS 23.8 g / 0.2 N	low risk
5 mm	633 Gs 63.3 mT	0.00 kg / 0.01 LBS 4.8 g / 0.0 N	low risk
10 mm	169 Gs 16.9 mT	0.00 kg / 0.00 LBS 0.3 g / 0.0 N	low risk
15 mm	72 Gs 7.2 mT	0.00 kg / 0.00 LBS 0.1 g / 0.0 N	low risk
20 mm	38 Gs 3.8 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk
30 mm	15 Gs 1.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk
50 mm	4 Gs 0.4 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk

Pulling power weakens sharply with every mm of spacing. Note that even the smallest gap (e.g., dirt, paint, rust) strongly weakens the grip. Magnets work most effectively in perfect adhesion; distance nullifies the force. See how quickly the load capacity fall, when the product does not adhere flatly to the metal substrate. When planning the mounting, discard redundant distances.

Table 2: Slippage force (wall)
MW 5x25 / 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 calculates the theoretical shear load sufficient to start the sliding of the magnet down on a upright steel wall (considering typical friction coefficient). This value is a function of the separation distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MW 5x25 / 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 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 and a weak degree of grip mean that magnets slide down easier than they pull off. Want to create a vertical fastening? Consider that the shear force is significantly lower than the perpendicular breakaway force. On a painted metal, the magnet will slip down under a significantly smaller cargo. Using a rubber layer can drastically raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 5x25 / 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 thin metal plate is unable to absorb the entire magnetic field, which wastes potential of the magnet. Should you mount a strong magnet to a weak sheet, the field will penetrate right through and the pull force will drop sharply. To utilize full efficiency of this neodymium's potential, you need a suitably thick element of steel. The material oversaturation causes that on sheet metal structures (e.g., car bodies), the product holds weaker. We advise picking the steel thickness from these parameters.

Table 5: Thermal stability (stability) - resistance threshold
MW 5x25 / 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

Ordinary NdFeB products lose parameters above the temperature limit. Protect against heat – heat can permanently demagnetize this product. With every degree above norm, the neodymium's capacity temporarily lowers. Refrain from using this product close to ovens exceeding its safe range. Ignoring the limit will cause destruction of magnetism.

*Engineering note: Heat tolerance is determined by both grade, as well as the dimension ratios. Low-profile magnets (low Pc) risk losing magnetic properties under lower heat stress compared to rod magnets. Warning indicator in the table indicates a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - field range
MW 5x25 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	4.57 kg / 10.08 LBS 6 167 Gs	0.69 kg / 1.51 LBS 686 g / 6.7 N	N/A
1 mm	2.97 kg / 6.55 LBS 9 909 Gs	0.45 kg / 0.98 LBS 446 g / 4.4 N	2.67 kg / 5.90 LBS ~0 Gs
2 mm	1.81 kg / 3.99 LBS 7 738 Gs	0.27 kg / 0.60 LBS 272 g / 2.7 N	1.63 kg / 3.60 LBS ~0 Gs
3 mm	1.08 kg / 2.37 LBS 5 965 Gs	0.16 kg / 0.36 LBS 162 g / 1.6 N	0.97 kg / 2.14 LBS ~0 Gs
5 mm	0.39 kg / 0.86 LBS 3 581 Gs	0.06 kg / 0.13 LBS 58 g / 0.6 N	0.35 kg / 0.77 LBS ~0 Gs
10 mm	0.05 kg / 0.11 LBS 1 266 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 339 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 46 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 30 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 21 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 15 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 11 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 attract each other from a wider radius than a magnet and sheet setup. The connection of two magnets produces a massive flux and a further horizon of performance. Planning to create a powerful holder? Utilize two neodymiums instead of one magnet and a steel. Exercise caution that when attracting two neodymiums, the collision energy is massive. The repulsion force is marginally weaker than the attraction, but still significant.
*The magnetic induction for N-N configuration drops to ~0 Gs in the exact middle of the gap (caused by magnetic field nullification).
* Calculations demonstrate shear force of two identical magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Protective zones (implants) - warnings
MW 5x25 / 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)	2.0 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 poses a real danger to IT equipment and medical implants. These magnets generate a flux that prevents correct functioning of sensitive medical devices. Be aware: the unseen radiation acts through matter and plastic. Special caution must be taken by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, remotes, membranes, and screens. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MW 5x25 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	11.16 km/h (3.10 m/s)	0.02 J
30 mm	19.32 km/h (5.37 m/s)	0.05 J
50 mm	24.94 km/h (6.93 m/s)	0.09 J
100 mm	35.27 km/h (9.80 m/s)	0.18 J

Magnetic elements are delicate – a collision with steel risks their cracking. Control the attraction moment – a magnet released freely turns into a projectile. Impact energy can cause material chips or injury to skin. Always hold the magnet during installation so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear safety glasses when playing with powerful specimens.

Table 9: Surface protection spec
MW 5x25 / 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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MW 5x25 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	1 450 Mx	14.5 µWb
P_c Coefficient	1.55	High (Stable)

Flux value passing through the pole surface. Key data in coil applications as well as sensors. The P_c coefficient defines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MW 5x25 / N38

Environment	Effective steel pull	Effect
Air (land)	0.45 kg	Standard
Water (riverbed)	0.52 kg (+0.07 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.

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

*Warning: On a vertical surface, the magnet holds only ~20% of its max power.

2. Efficiency vs thickness

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

3. Power loss vs temp

*For standard magnets, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.55

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.

Engineering data and GPSR

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: 010086-2026

Magnet Unit Converter

Pulling force

Pounds (lbs)

Magnetic Field

Gauss (Gs)

Induction (T)

Simply complete one field, and the calculator fill in everything else instantly.

Check out also products

Product available Ships today (order by 14:00)

HH 25x7.7 [M5] / N38 - through hole magnetic holder

11.44 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

HH 36x7.5 [M6] / N38 - through hole magnetic holder

38.90 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

GM 100x38x13 / N52 - weapon holder

65.50 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 15x5 / N38 - cylindrical magnet

3.20 ZŁ brutto / pcs

This product is an incredibly powerful cylinder magnet, composed of modern NdFeB material, which, with dimensions of Ø5x25 mm, guarantees maximum efficiency. The MW 5x25 / N38 component is characterized by a tolerance of ±0.1mm and industrial build quality, making it an excellent solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 0.45 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 effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is created for building generators, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 4.41 N with a weight of only 3.68 g, this rod is indispensable in electronics 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 automation, anaerobic resins are used, which do not react with the nickel coating 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 even stronger magnets in the same volume (Ø5x25), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

This model is characterized by dimensions Ø5x25 mm, which, at a weight of 3.68 g, makes it an element with high magnetic energy density. The value of 4.41 N means that the magnet is capable of holding a weight many times exceeding its own mass of 3.68 g. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 25 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 as well as weaknesses of rare earth magnets.

Pros

Besides their magnetic performance, neodymium magnets are valued for these benefits:

Their magnetic field is durable, and after around ten years it decreases only by ~1% (theoretically),
They are extremely resistant to demagnetization induced by external magnetic fields,
A magnet with a metallic silver surface looks better,
The surface of neodymium magnets generates a unique magnetic field – this is a distinguishing feature,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
Considering the possibility of free forming and customization to unique solutions, NdFeB magnets can be produced in a broad palette of forms and dimensions, which amplifies use scope,
Key role in modern technologies – they serve a role in computer drives, brushless drives, diagnostic systems, also industrial machines.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

What to avoid - cons of neodymium magnets and proposals for their use:

To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as 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
Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
Limited possibility of making threads in the magnet and complex shapes - recommended is a housing - magnet mounting.
Potential hazard related to microscopic parts of magnets pose a threat, in case of ingestion, which gains importance in the context of child health protection. Furthermore, small elements of these devices are able to be problematic in diagnostics medical after entering the body.
Due to expensive raw materials, their price is relatively high,

Lifting parameters

Maximum holding power of the magnet – what affects it?

Breakaway force was defined for optimal configuration, assuming:

with the application of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
whose thickness equals approx. 10 mm
with a plane cleaned and smooth
under conditions of gap-free contact (surface-to-surface)
during detachment in a direction vertical to the plane
in temp. approx. 20°C

Magnet lifting force in use – key factors

During everyday use, the real power results from a number of factors, listed from crucial:

Gap 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.
Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
Plate thickness – insufficiently thick plate does not accept the full field, causing part of the power to be escaped to the other side.
Metal type – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
Surface condition – smooth surfaces guarantee perfect abutment, which increases force. Uneven metal weaken the grip.
Thermal conditions – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under shearing force the load capacity is reduced by as much as fivefold. In addition, even a slight gap between the magnet and the plate decreases the load capacity.

Warnings

Electronic devices

Intense magnetic fields can erase data on payment cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.

Demagnetization risk

Do not overheat. Neodymium magnets are sensitive to temperature. If you need resistance above 80°C, look for HT versions (H, SH, UH).

Compass and GPS

Remember: rare earth magnets generate a field that disrupts sensitive sensors. Maintain a separation from your mobile, device, and GPS.

Avoid contact if allergic

Certain individuals suffer from a hypersensitivity to nickel, which is the standard coating for neodymium magnets. Extended handling can result in an allergic reaction. It is best to use protective gloves.

Handling rules

Handle with care. Neodymium magnets act from a distance and connect with massive power, often quicker than you can react.

Pacemakers

Life threat: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Hand protection

Risk of injury: The pulling power is so immense that it can cause blood blisters, crushing, and broken bones. Protective gloves are recommended.

Dust is flammable

Drilling and cutting of NdFeB material poses a fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Beware of splinters

Beware of splinters. Magnets can fracture upon violent connection, launching sharp fragments into the air. Eye protection is mandatory.

Adults only

Neodymium magnets are not intended for children. Eating multiple magnets can lead to them attracting across intestines, which constitutes a direct threat to life and requires urgent medical intervention.

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

MW 5x25 / N38 - cylindrical magnet

Product card - MW 5x25 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the product - data

Table 1: Static pull force (force vs gap) - characteristics MW 5x25 / N38

Table 2: Slippage force (wall) MW 5x25 / N38

Table 3: Vertical assembly (sliding) - vertical pull MW 5x25 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MW 5x25 / N38

Table 5: Thermal stability (stability) - resistance threshold MW 5x25 / N38

Table 6: Two magnets (attraction) - field range MW 5x25 / N38

Table 7: Protective zones (implants) - warnings MW 5x25 / N38

Table 8: Collisions (kinetic energy) - warning MW 5x25 / N38

Table 9: Surface protection spec MW 5x25 / N38

Table 10: Construction data (Flux) MW 5x25 / N38

Table 11: Hydrostatics and buoyancy MW 5x25 / N38

1. Vertical hold

2. Efficiency vs thickness

3. Power loss vs temp

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

Elemental analysis

Environmental data

Pulling force

Magnetic Field

Check out also products

HH 25x7.7 [M5] / N38 - through hole magnetic holder

HH 36x7.5 [M6] / N38 - through hole magnetic holder

GM 100x38x13 / N52 - weapon holder

MW 15x5 / N38 - cylindrical magnet

Strengths as well as weaknesses of rare earth magnets.

Pros

Disadvantages

Lifting parameters

Maximum holding power of the magnet – what affects it?

Magnet lifting force in use – key factors

Warnings

Electronic devices

Demagnetization risk

Compass and GPS

Avoid contact if allergic

Handling rules

Pacemakers

Hand protection

Dust is flammable

Beware of splinters

Adults only

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - characteristics
MW 5x25 / N38

Table 2: Slippage force (wall)
MW 5x25 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MW 5x25 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MW 5x25 / N38

Table 5: Thermal stability (stability) - resistance threshold
MW 5x25 / N38

Table 6: Two magnets (attraction) - field range
MW 5x25 / N38

Table 7: Protective zones (implants) - warnings
MW 5x25 / N38

Table 8: Collisions (kinetic energy) - warning
MW 5x25 / N38

Table 9: Surface protection spec
MW 5x25 / N38

Table 10: Construction data (Flux)
MW 5x25 / N38

Table 11: Hydrostatics and buoyancy
MW 5x25 / N38