Product available Ships tomorrow

MW 25x5 / 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 010049

GTIN/EAN: 5906301810483

5.00

Diameter Ø

25 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

18.41 g

Magnetization Direction

↑ axial

Load capacity

7.98 kg / 78.25 N

Magnetic Induction

230.20 mT / 2302 Gs

Coating

[NiCuNi] Nickel

product parameters »

8.39 ZŁ with VAT / pcs + price for transport

6.82 ZŁ net + 23% VAT / pcs

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Technical specification of the product - MW 25x5 / N38 - cylindrical magnet

Specification / characteristics - MW 25x5 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010049
GTIN/EAN	5906301810483
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	25 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	18.41 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.98 kg / 78.25 N
Magnetic Induction ~ ?	230.20 mT / 2302 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 25x5 / 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

Engineering simulation of the assembly - data

Presented data are the direct effect of a mathematical simulation. Values are based on algorithms for the material Nd₂Fe₁₄B. Actual performance may differ from theoretical values. Use these data as a reference point when designing systems.

Table 1: Static force (pull vs distance) - characteristics
MW 25x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2302 Gs 230.2 mT	7.98 kg / 17.59 lbs 7980.0 g / 78.3 N	warning
1 mm	2189 Gs 218.9 mT	7.21 kg / 15.91 lbs 7214.9 g / 70.8 N	warning
2 mm	2050 Gs 205.0 mT	6.33 kg / 13.95 lbs 6329.3 g / 62.1 N	warning
3 mm	1895 Gs 189.5 mT	5.41 kg / 11.93 lbs 5410.7 g / 53.1 N	warning
5 mm	1570 Gs 157.0 mT	3.72 kg / 8.19 lbs 3715.4 g / 36.4 N	warning
10 mm	890 Gs 89.0 mT	1.19 kg / 2.63 lbs 1192.8 g / 11.7 N	low risk
15 mm	495 Gs 49.5 mT	0.37 kg / 0.81 lbs 368.5 g / 3.6 N	low risk
20 mm	288 Gs 28.8 mT	0.12 kg / 0.28 lbs 124.8 g / 1.2 N	low risk
30 mm	116 Gs 11.6 mT	0.02 kg / 0.04 lbs 20.2 g / 0.2 N	low risk
50 mm	31 Gs 3.1 mT	0.00 kg / 0.00 lbs 1.4 g / 0.0 N	low risk

Grip strength weakens drastically per each millimeter of distance. Keep in mind that even a microscopic distance (e.g., contamination, paint, dust) strongly diminishes the holding power. Magnetic products work strongest in perfect adhesion; air break weakens the force. Analyze how flashily the parameters plummet, when the magnet does not touch flatly to the steel surface. When calculating the mounting, discard additional spacers.

Table 2: Shear hold (wall)
MW 25x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.60 kg / 3.52 lbs 1596.0 g / 15.7 N
1 mm	Stal (~0.2)	1.44 kg / 3.18 lbs 1442.0 g / 14.1 N
2 mm	Stal (~0.2)	1.27 kg / 2.79 lbs 1266.0 g / 12.4 N
3 mm	Stal (~0.2)	1.08 kg / 2.39 lbs 1082.0 g / 10.6 N
5 mm	Stal (~0.2)	0.74 kg / 1.64 lbs 744.0 g / 7.3 N
10 mm	Stal (~0.2)	0.24 kg / 0.52 lbs 238.0 g / 2.3 N
15 mm	Stal (~0.2)	0.07 kg / 0.16 lbs 74.0 g / 0.7 N
20 mm	Stal (~0.2)	0.02 kg / 0.05 lbs 24.0 g / 0.2 N
30 mm	Stal (~0.2)	0.00 kg / 0.01 lbs 4.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

This section defines the theoretical holding capacity needed to cause the downward movement of the magnet vertically against a vertical steel wall (considering typical friction). This parameter is relative to the air gap between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 25x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.39 kg / 5.28 lbs 2394.0 g / 23.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.60 kg / 3.52 lbs 1596.0 g / 15.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.80 kg / 1.76 lbs 798.0 g / 7.8 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.99 kg / 8.80 lbs 3990.0 g / 39.1 N

When placing a holder on a vertical wall (e.g., a car body), it will only hold just about 20%-30% of its nominal power. Gravity and a low friction coefficient mean that magnets slide down faster than they pull off. Want to create a vertical fastening? Remember that the sliding force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the magnet will slide down under a much lighter load. Application of an anti-slip layer can effectively improve the result.

Table 4: Steel thickness (saturation) - sheet metal selection
MW 25x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.80 kg / 1.76 lbs 798.0 g / 7.8 N
1 mm	25%	2.00 kg / 4.40 lbs 1995.0 g / 19.6 N
2 mm	50%	3.99 kg / 8.80 lbs 3990.0 g / 39.1 N
3 mm	75%	5.99 kg / 13.19 lbs 5985.0 g / 58.7 N
5 mm	100%	7.98 kg / 17.59 lbs 7980.0 g / 78.3 N
10 mm	100%	7.98 kg / 17.59 lbs 7980.0 g / 78.3 N
11 mm	100%	7.98 kg / 17.59 lbs 7980.0 g / 78.3 N
12 mm	100%	7.98 kg / 17.59 lbs 7980.0 g / 78.3 N

A thin sheet is unable to absorb the full magnetic flux, which squanders power of the holder. If you mount a strong magnet to a weak sheet, the field will pass right through and the holding will be smaller. To achieve 100% of this magnet's potential, you require a sufficiently solid piece of metal. The material oversaturation causes that on sheet metal structures (e.g., appliance housings), the holder shows lower pull force. We suggest choosing the steel dimension based on the following data.

Table 5: Thermal resistance (material behavior) - thermal limit
MW 25x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.98 kg / 17.59 lbs 7980.0 g / 78.3 N	OK
40 °C	-2.2%	7.80 kg / 17.21 lbs 7804.4 g / 76.6 N	OK
60 °C	-4.4%	7.63 kg / 16.82 lbs 7628.9 g / 74.8 N
80 °C	-6.6%	7.45 kg / 16.43 lbs 7453.3 g / 73.1 N
100 °C	-28.8%	5.68 kg / 12.53 lbs 5681.8 g / 55.7 N

Ordinary NdFeB products lose power above the temperature limit. Avoid high temperatures – excessive heat can permanently destroy this magnet. With increasing heat, the neodymium's power briefly lowers. Avoid using this product close to ovens higher than its operating temperature limit. Exceeding the critical threshold will lead to destruction of magnetic properties.

*Important note: Temperature resistance depends not only on the material grade, as well as the dimension ratios. Thin magnets (low Pc) risk losing magnetic properties at lower temperatures compared to rod magnets. The danger warning in the table points to permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - forces in the system
MW 25x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	16.03 kg / 35.34 lbs 3 871 Gs	2.40 kg / 5.30 lbs 2405 g / 23.6 N	N/A
1 mm	15.31 kg / 33.75 lbs 4 498 Gs	2.30 kg / 5.06 lbs 2296 g / 22.5 N	13.78 kg / 30.38 lbs ~0 Gs
2 mm	14.49 kg / 31.95 lbs 4 377 Gs	2.17 kg / 4.79 lbs 2174 g / 21.3 N	13.05 kg / 28.76 lbs ~0 Gs
3 mm	13.62 kg / 30.03 lbs 4 243 Gs	2.04 kg / 4.50 lbs 2043 g / 20.0 N	12.26 kg / 27.03 lbs ~0 Gs
5 mm	11.79 kg / 26.00 lbs 3 948 Gs	1.77 kg / 3.90 lbs 1769 g / 17.4 N	10.61 kg / 23.40 lbs ~0 Gs
10 mm	7.46 kg / 16.46 lbs 3 141 Gs	1.12 kg / 2.47 lbs 1120 g / 11.0 N	6.72 kg / 14.81 lbs ~0 Gs
20 mm	2.40 kg / 5.28 lbs 1 780 Gs	0.36 kg / 0.79 lbs 359 g / 3.5 N	2.16 kg / 4.75 lbs ~0 Gs
50 mm	0.10 kg / 0.21 lbs 355 Gs	0.01 kg / 0.03 lbs 14 g / 0.1 N	0.09 kg / 0.19 lbs ~0 Gs
60 mm	0.04 kg / 0.09 lbs 231 Gs	0.01 kg / 0.01 lbs 6 g / 0.1 N	0.04 kg / 0.08 lbs ~0 Gs
70 mm	0.02 kg / 0.04 lbs 158 Gs	0.00 kg / 0.01 lbs 3 g / 0.0 N	0.02 kg / 0.04 lbs ~0 Gs
80 mm	0.01 kg / 0.02 lbs 112 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
90 mm	0.01 kg / 0.01 lbs 82 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
100 mm	0.00 kg / 0.01 lbs 62 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 steel combination. The connection of magnet-to-magnet creates a more powerful interaction and a wider radius of operation. Designing a strong closure? Use a pair of magnets instead of a neodymium and a striker plate. Remember that when attracting two neodymiums, the pinch force is massive. The levitation is slightly lower than the attraction, but still large.
*The magnetic induction in repulsion mode is approximately ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Attention: Calculations demonstrate shear force of a pair of identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (implants) - precautionary measures
MW 25x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	10.0 cm
Hearing aid	10 Gs (1.0 mT)	8.0 cm
Timepiece	20 Gs (2.0 mT)	6.0 cm
Mobile device	40 Gs (4.0 mT)	5.0 cm
Car key	50 Gs (5.0 mT)	4.5 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

Powerful magnet radiation is a serious hazard to electronic devices as well as medical implants. These NdFeB products produce a flux that destroys function of digital equipment. Notice: the invisible magnetic field penetrates the body and housings. Exceptional care must be taken by people with hearing aids and drug dispensers. Influence will be felt by: mechanical watches, car keys, speakers, and screens. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - warning
MW 25x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.87 km/h (6.35 m/s)	0.37 J
30 mm	36.43 km/h (10.12 m/s)	0.94 J
50 mm	46.96 km/h (13.04 m/s)	1.57 J
100 mm	66.40 km/h (18.44 m/s)	3.13 J

NdFeB products are prone to chipping – a strong collision with metal can result in shattering. Pay attention to connection velocity – a neodymium left loose speeds with massive force. Striking energy can trigger coating fragments or injury to skin. Always hold the magnet during mounting so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 25x5 / 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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MW 25x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	13 107 Mx	131.1 µWb
P_c Coefficient	0.29	Low (Flat)

Total magnetic flux emitted by the pole surface. Key data when building generators and motors. The P_c coefficient defines the working geometry.

Table 11: Underwater work (magnet fishing)
MW 25x5 / N38

Environment	Effective steel pull	Effect
Air (land)	7.98 kg	Standard
Water (riverbed)	9.14 kg (+1.16 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.

In water, the magnet feels stronger thanks to Archimedes' principle. However, remember the water resistance when pulling the rope quickly.

1. Sliding resistance

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

2. Steel saturation

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

3. Temperature resistance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.29

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. 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 specification and ecology

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%

Sustainability

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: 010049-2026

Measurement Calculator

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Force in kg

Force (N)

Force in lbs

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The presented product is an exceptionally strong rod magnet, composed of advanced NdFeB material, which, at dimensions of Ø25x5 mm, guarantees optimal power. The MW 25x5 / N38 component features a tolerance of ±0.1mm and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a magnetic rod with impressive force (approx. 7.98 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Additionally, its Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

This model is ideal for building electric motors, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 78.25 N with a weight of only 18.41 g, this rod is indispensable in electronics and wherever low weight is crucial.

Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure long-term durability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Magnets NdFeB grade N38 are suitable for the majority of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø25x5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

This model is characterized by dimensions Ø25x5 mm, which, at a weight of 18.41 g, makes it an element with impressive magnetic energy density. The value of 78.25 N means that the magnet is capable of holding a weight many times exceeding its own mass of 18.41 g. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 25 mm. 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.

Pros as well as cons of rare earth magnets.

Advantages

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

Their power is maintained, and after around ten years it drops only by ~1% (according to research),
Magnets effectively protect themselves against loss of magnetization caused by foreign field sources,
The use of an shiny coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
The surface of neodymium magnets generates a unique magnetic field – this is a key feature,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Thanks to the option of precise molding and customization to custom solutions, magnetic components can be created in a variety of forms and dimensions, which amplifies use scope,
Universal use in modern industrial fields – they are used in HDD drives, electromotive mechanisms, medical equipment, as well as multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which makes them useful in compact constructions

Weaknesses

Disadvantages of neodymium magnets:

They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
When exposed to high temperature, neodymium magnets experience a drop in power. 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
When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
Limited ability of making nuts in the magnet and complicated forms - preferred is a housing - mounting mechanism.
Possible danger to health – tiny shards of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. Additionally, small elements of these products are able to disrupt the diagnostic process medical in case of swallowing.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Maximum lifting capacity of the magnet – what contributes to it?

The lifting capacity listed is a measurement result performed under standard conditions:

with the contact of a yoke made of special test steel, guaranteeing full magnetic saturation
possessing a thickness of minimum 10 mm to avoid saturation
with a surface perfectly flat
with total lack of distance (without coatings)
during pulling in a direction perpendicular to the mounting surface
at conditions approx. 20°C

Practical aspects of lifting capacity – factors

During everyday use, the real power results from several key aspects, ranked from the most important:

Gap (between the magnet and the metal), because even a tiny clearance (e.g. 0.5 mm) results in a drastic drop in force by up to 50% (this also applies to varnish, rust or dirt).
Loading method – catalog parameter refers to detachment vertically. When slipping, the magnet exhibits much less (typically approx. 20-30% of nominal force).
Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
Steel grade – the best choice is pure iron steel. Stainless steels may attract less.
Surface condition – ground elements guarantee perfect abutment, which improves force. Uneven metal weaken the grip.
Thermal factor – high temperature reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate lowers the holding force.

Precautions when working with NdFeB magnets

Metal Allergy

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction happens, cease handling magnets and use protective gear.

Electronic hazard

Equipment safety: Strong magnets can damage data carriers and sensitive devices (pacemakers, medical aids, timepieces).

Eye protection

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

Keep away from electronics

Be aware: neodymium magnets produce a field that interferes with precision electronics. Maintain a safe distance from your mobile, tablet, and GPS.

Safe operation

Be careful. Rare earth magnets act from a distance and snap with massive power, often quicker than you can react.

Life threat

Warning for patients: Powerful magnets affect electronics. Keep at least 30 cm distance or request help to work with the magnets.

Crushing force

Big blocks can smash fingers instantly. Do not put your hand between two strong magnets.

Permanent damage

Watch the temperature. Heating the magnet above 80 degrees Celsius will destroy its properties and pulling force.

Product not for children

Strictly keep magnets away from children. Choking hazard is significant, and the consequences of magnets clamping inside the body are fatal.

Flammability

Mechanical processing of neodymium magnets poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Safety First! More info about hazards in the article: Safety of working with magnets.

MW 25x5 / N38 - cylindrical magnet

Technical specification of the product - MW 25x5 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering simulation of the assembly - data

Table 1: Static force (pull vs distance) - characteristics MW 25x5 / N38

Table 2: Shear hold (wall) MW 25x5 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MW 25x5 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MW 25x5 / N38

Table 5: Thermal resistance (material behavior) - thermal limit MW 25x5 / N38

Table 6: Two magnets (repulsion) - forces in the system MW 25x5 / N38

Table 7: Safety (HSE) (implants) - precautionary measures MW 25x5 / N38

Table 8: Impact energy (cracking risk) - warning MW 25x5 / N38

Table 9: Anti-corrosion coating durability MW 25x5 / N38

Table 10: Construction data (Flux) MW 25x5 / N38

Table 11: Underwater work (magnet fishing) MW 25x5 / N38

1. Sliding resistance

2. Steel saturation

3. Temperature resistance

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

Material specification

Sustainability

Force (pull)

Magnetic Field

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MW 9x3 / N38 - cylindrical magnet

Pros as well as cons of rare earth magnets.

Advantages

Weaknesses

Pull force analysis

Maximum lifting capacity of the magnet – what contributes to it?

Practical aspects of lifting capacity – factors

Precautions when working with NdFeB magnets

Metal Allergy

Electronic hazard

Eye protection

Keep away from electronics

Safe operation

Life threat

Crushing force

Permanent damage

Product not for children

Flammability

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - characteristics
MW 25x5 / N38

Table 2: Shear hold (wall)
MW 25x5 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 25x5 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MW 25x5 / N38

Table 5: Thermal resistance (material behavior) - thermal limit
MW 25x5 / N38

Table 6: Two magnets (repulsion) - forces in the system
MW 25x5 / N38

Table 7: Safety (HSE) (implants) - precautionary measures
MW 25x5 / N38

Table 8: Impact energy (cracking risk) - warning
MW 25x5 / N38

Table 9: Anti-corrosion coating durability
MW 25x5 / N38

Table 10: Construction data (Flux)
MW 25x5 / N38

Table 11: Underwater work (magnet fishing)
MW 25x5 / N38