Product available Ships tomorrow

MW 5x25 / N38 - cylindrical magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN

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

technical parameters »

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

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator

Looking for a better price?

Pick up the phone and ask +48 22 499 98 98 if you prefer drop us a message using inquiry form our website.
Force along with appearance of a neodymium magnet can be verified with our our magnetic calculator.

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

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

Technical modeling of the assembly - report

These data constitute the result of a physical calculation. Results rely on algorithms for the material Nd₂Fe₁₄B. Operational conditions may differ from theoretical values. Please consider these data as a reference point for designers.

Table 1: Static force (pull vs distance) - 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	safe
1 mm	3869 Gs 386.9 mT	0.18 kg / 0.39 lbs 178.4 g / 1.8 N	safe
2 mm	2300 Gs 230.0 mT	0.06 kg / 0.14 lbs 63.1 g / 0.6 N	safe
3 mm	1412 Gs 141.2 mT	0.02 kg / 0.05 lbs 23.8 g / 0.2 N	safe
5 mm	633 Gs 63.3 mT	0.00 kg / 0.01 lbs 4.8 g / 0.0 N	safe
10 mm	169 Gs 16.9 mT	0.00 kg / 0.00 lbs 0.3 g / 0.0 N	safe
15 mm	72 Gs 7.2 mT	0.00 kg / 0.00 lbs 0.1 g / 0.0 N	safe
20 mm	38 Gs 3.8 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	safe
30 mm	15 Gs 1.5 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	safe
50 mm	4 Gs 0.4 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	safe

Grip strength drops sharply with every subsequent millimeter of gap. Keep in mind that even a microscopic distance (e.g., dirt, paint, rust) noticeably weakens the grip. Magnets work strongest during direct contact; distance nullifies the power. Observe how flashily the load capacity plummet, when the magnet does not adhere directly to the metal substrate. When planning the arrangement, discard unnecessary gaps.

Table 2: Slippage load (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

The table below defines the approximate shear load sufficient to start the sliding of the magnet vertically along a upright metal surface (considering typical friction coefficient). This parameter is a function of the separation distance between the magnet and the metal.

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 vertical wall (e.g., a fridge), it will only hold only approx. 20%-30% of its nominal power. Gravitational force as well as a low friction coefficient cause that holders slide down easier than they pop off the substrate. Want to create a wall mount? Consider that the sliding force is noticeably lower than the perpendicular breakaway force. On a painted metal, the magnet will slide down under a much lighter weight. Using a rubber coating can significantly increase the grip.

Table 4: Material efficiency (saturation) - power losses
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 not enough to conduct the entire magnetic field, which squanders power of the magnet. If you mount a strong magnet to a thin surface, the field will pass right through and the attraction force will be weaker. To squeeze the maximum of this neodymium's potential, you need a suitably thick piece of metal. The saturation effect causes that on thin elements (e.g., car bodies), the product works worse. We recommend selecting the steel dimension according to the table below.

Table 5: Thermal resistance (stability) - thermal limit
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 irreversibly lose power after exceeding the maximum temperature. Watch out for overheating – heat can irreversibly demagnetize this magnet. With every degree above norm, the magnet's capacity temporarily decreases. Do not use this magnet in hot environments exceeding its operating temperature limit. Exceeding the critical threshold will result in permanent loss of magnetic properties.

*Technical advisory: Thermal stability is determined by both grade, but also on the magnet's shape. Flat magnets (pancake types) risk losing magnetic properties under lower heat stress than long magnets. Warning indicator in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field collision
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 neodymium and metal combination. The connection of magnet-to-magnet creates a more powerful interaction and a further horizon of performance. Want to build a powerful holder? Apply two magnets instead of a neodymium and a striker plate. Remember that when connecting a pair of magnets, the pinch force is huge. The levitation is slightly lower than the connection force, but still impressive.
*The magnetic induction between like poles drops to ~0 Gs at the midpoint between the magnets (due to field cancellation).
Note: Estimates demonstrate sliding force of two identical magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - 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
Timepiece	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

A strong magnetic field is a large risk to IT equipment as well as pacemakers. These magnets produce a flux that disrupts operation of sensitive medical devices. Remember: the unseen radiation passes through tissues and plastic. Exceptional care must be taken by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, remotes, membranes, and displays. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - 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

NdFeB products are delicate – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely speeds with massive force. Impact energy can cause material chips or dangerous crushing to skin. Hold the magnet firmly during bringing near metal so it doesn't hit violently against the metal. A collision at high speed means shattering of the magnet. Wear safety glasses when handling with large magnets.

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: Electrical 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 emitted by the pole surface. Key data for generator designers and motors. The P_c coefficient determines the working geometry.

Table 11: Physics of underwater searching
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%

Corrosion 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. However, remember the water resistance when pulling the rope quickly.

1. Shear force

*Note: On a vertical wall, the magnet holds merely a fraction of its perpendicular strength.

2. Steel thickness impact

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

3. Heat tolerance

*For standard magnets, the max working temp 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

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%

Ecology and recycling (GPSR)

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

Measurement Calculator

Magnet pull force

Kilograms (kg)

lbs

Magnetic Field

Tesla (T)

Insert a number in one of the inputs, to see the rest will update instantly.

View also offers

Product available Ships tomorrow

MW 25x5 / N38AH - cylindrical magnet

16.68 ZŁ brutto / pcs

Product available Ships tomorrow

SM 25x375 [2xM8] / N42 - magnetic separator

1057.80 ZŁ brutto / pcs

Product available Ships tomorrow

MPL 80x40x15 / N38 - lamellar magnet

139.54 ZŁ brutto / pcs

Product available Ships tomorrow

UMH 16x5x32 [M4] / N38 - magnetic holder with hook

4.88 ZŁ brutto / pcs

This product is a very strong rod magnet, composed of modern NdFeB material, which, at dimensions of Ø5x25 mm, guarantees optimal power. This specific item boasts an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 0.45 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

It finds application in modeling, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 4.41 N with a weight of only 3.68 g, this rod is indispensable in miniature devices and wherever low weight is crucial.

Since our magnets have a tolerance of ±0.1mm, 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, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Magnets N38 are strong enough for 90% of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest 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.

The presented product is a neodymium magnet with precisely defined parameters: diameter 5 mm and height 25 mm. The key parameter here is the holding force amounting to approximately 0.45 kg (force ~4.41 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 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 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.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Strengths

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

They do not lose power, even after nearly 10 years – the reduction in strength is only ~1% (theoretically),
Magnets perfectly protect themselves against loss of magnetization caused by ambient magnetic noise,
A magnet with a metallic nickel surface has better aesthetics,
Magnets have maximum magnetic induction on the working surface,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the form) even at a temperature of 230°C or more...
Possibility of detailed modeling and optimizing to defined needs,
Key role in modern technologies – they serve a role in data components, electric motors, precision medical tools, as well as multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which makes them useful in miniature devices

Cons

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.
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (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 during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
We suggest a housing - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complex forms.
Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these magnets are able to complicate diagnosis medical after entering the body.
Due to expensive raw materials, their price exceeds standard values,

Pull force analysis

Magnetic strength at its maximum – what contributes to it?

Magnet power was determined for optimal configuration, assuming:

using a plate made of high-permeability steel, functioning as a ideal flux conductor
whose thickness reaches at least 10 mm
characterized by lack of roughness
under conditions of ideal adhesion (metal-to-metal)
under perpendicular force direction (90-degree angle)
in temp. approx. 20°C

Lifting capacity in real conditions – factors

Holding efficiency is affected by specific conditions, mainly (from priority):

Distance (between the magnet and the metal), since even a tiny distance (e.g. 0.5 mm) results in a drastic drop in force by up to 50% (this also applies to paint, corrosion or debris).
Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
Steel type – low-carbon steel attracts best. Alloy steels reduce magnetic properties and lifting capacity.
Surface condition – ground elements ensure maximum contact, which increases force. Uneven metal weaken the grip.
Thermal environment – heating the magnet results in weakening of force. It is worth remembering the thermal limit for a given model.

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under parallel forces the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate lowers the load capacity.

Safety rules for work with NdFeB magnets

Skin irritation risks

Certain individuals experience a contact allergy to nickel, which is the common plating for NdFeB magnets. Frequent touching can result in skin redness. It is best to wear protective gloves.

Choking Hazard

Neodymium magnets are not toys. Eating multiple magnets can lead to them connecting inside the digestive tract, which constitutes a severe health hazard and necessitates immediate surgery.

Safe operation

Handle magnets consciously. Their huge power can shock even experienced users. Plan your moves and respect their power.

Mechanical processing

Powder produced during grinding of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Pacemakers

Life threat: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Protective goggles

Protect your eyes. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.

Electronic devices

Avoid bringing magnets near a purse, computer, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.

Magnetic interference

An intense magnetic field negatively affects the functioning of magnetometers in smartphones and GPS navigation. Maintain magnets close to a smartphone to avoid damaging the sensors.

Operating temperature

Regular neodymium magnets (grade N) lose magnetization when the temperature exceeds 80°C. Damage is permanent.

Crushing risk

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

Important! Want to know more? Check our post: 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

Technical modeling of the assembly - report

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

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

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

Table 4: Material efficiency (saturation) - power losses MW 5x25 / N38

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

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

Table 7: Hazards (electronics) - warnings MW 5x25 / N38

Table 8: Dynamics (cracking risk) - warning MW 5x25 / N38

Table 9: Surface protection spec MW 5x25 / N38

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

Table 11: Physics of underwater searching MW 5x25 / N38

1. Shear force

2. Steel thickness impact

3. Heat tolerance

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

Material specification

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Field

View also offers

MW 25x5 / N38AH - cylindrical magnet

SM 25x375 [2xM8] / N42 - magnetic separator

MPL 80x40x15 / N38 - lamellar magnet

UMH 16x5x32 [M4] / N38 - magnetic holder with hook

Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

Cons

Pull force analysis

Magnetic strength at its maximum – what contributes to it?

Lifting capacity in real conditions – factors

Safety rules for work with NdFeB magnets

Skin irritation risks

Choking Hazard

Safe operation

Mechanical processing

Pacemakers

Protective goggles

Electronic devices

Magnetic interference

Operating temperature

Crushing risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

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

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

Table 4: Material efficiency (saturation) - power losses
MW 5x25 / N38

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

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

Table 7: Hazards (electronics) - warnings
MW 5x25 / N38

Table 8: Dynamics (cracking risk) - warning
MW 5x25 / N38

Table 9: Surface protection spec
MW 5x25 / N38

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

Table 11: Physics of underwater searching
MW 5x25 / N38

Advantages and disadvantages of Nd₂Fe₁₄B magnets.