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MW 15x4 / 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 010030

GTIN/EAN: 5906301810292

5.00

Diameter Ø

15 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

5.3 g

Magnetization Direction

↑ axial

Load capacity

4.22 kg / 41.38 N

Magnetic Induction

291.60 mT / 2916 Gs

Coating

[NiCuNi] Nickel

see parameters »

1.968 ZŁ with VAT / pcs + price for transport

1.600 ZŁ net + 23% VAT / pcs

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Technical - MW 15x4 / N38 - cylindrical magnet

Specification / characteristics - MW 15x4 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010030
GTIN/EAN	5906301810292
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	15 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	5.3 g
Magnetization Direction	↑ axial
Load capacity ~ ?	4.22 kg / 41.38 N
Magnetic Induction ~ ?	291.60 mT / 2916 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 15x4 / 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 product - data

Presented information constitute the outcome of a physical simulation. Values rely on models for the material Nd₂Fe₁₄B. Real-world parameters may deviate from the simulation results. Treat these calculations as a preliminary roadmap during assembly planning.

Table 1: Static force (pull vs distance) - power drop
MW 15x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2915 Gs 291.5 mT	4.22 kg / 9.30 pounds 4220.0 g / 41.4 N	warning
1 mm	2620 Gs 262.0 mT	3.41 kg / 7.51 pounds 3408.2 g / 33.4 N	warning
2 mm	2276 Gs 227.6 mT	2.57 kg / 5.67 pounds 2571.6 g / 25.2 N	warning
3 mm	1928 Gs 192.8 mT	1.85 kg / 4.07 pounds 1845.5 g / 18.1 N	safe
5 mm	1324 Gs 132.4 mT	0.87 kg / 1.92 pounds 870.3 g / 8.5 N	safe
10 mm	505 Gs 50.5 mT	0.13 kg / 0.28 pounds 126.7 g / 1.2 N	safe
15 mm	222 Gs 22.2 mT	0.02 kg / 0.05 pounds 24.4 g / 0.2 N	safe
20 mm	113 Gs 11.3 mT	0.01 kg / 0.01 pounds 6.3 g / 0.1 N	safe
30 mm	40 Gs 4.0 mT	0.00 kg / 0.00 pounds 0.8 g / 0.0 N	safe
50 mm	10 Gs 1.0 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	safe

Pulling power decreases drastically with every subsequent millimeter of distance. Keep in mind that even a very thin break (e.g., contamination, varnish, dust) strongly reduces the pull force. Magnetic products hold strongest during direct contact; gap kills the power. Observe how flashily the parameters drop, when the magnet does not adhere tightly to the steel surface. When planning the arrangement, discard redundant distances.

Table 2: Vertical force (wall)
MW 15x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.84 kg / 1.86 pounds 844.0 g / 8.3 N
1 mm	Stal (~0.2)	0.68 kg / 1.50 pounds 682.0 g / 6.7 N
2 mm	Stal (~0.2)	0.51 kg / 1.13 pounds 514.0 g / 5.0 N
3 mm	Stal (~0.2)	0.37 kg / 0.82 pounds 370.0 g / 3.6 N
5 mm	Stal (~0.2)	0.17 kg / 0.38 pounds 174.0 g / 1.7 N
10 mm	Stal (~0.2)	0.03 kg / 0.06 pounds 26.0 g / 0.3 N
15 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

This section calculates the approximate shear load necessary to cause the slippage of the magnet vertically on a upright steel plate (considering typical friction). The holding force varies with the gap size between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 15x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.27 kg / 2.79 pounds 1266.0 g / 12.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.84 kg / 1.86 pounds 844.0 g / 8.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.42 kg / 0.93 pounds 422.0 g / 4.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.11 kg / 4.65 pounds 2110.0 g / 20.7 N

When hanging a magnet on a vertical wall (e.g., a fridge), it you can count on barely approx. 20%-30% of its maximum pull force. Gravitational force and a low friction coefficient cause that magnets move down easier than they detach. Designing a vertical fastening? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a painted metal, the magnet will slip down under a noticeably lighter load. Application of an anti-slip coating can significantly increase the grip.

Table 4: Material efficiency (saturation) - power losses
MW 15x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.42 kg / 0.93 pounds 422.0 g / 4.1 N
1 mm	25%	1.06 kg / 2.33 pounds 1055.0 g / 10.3 N
2 mm	50%	2.11 kg / 4.65 pounds 2110.0 g / 20.7 N
3 mm	75%	3.17 kg / 6.98 pounds 3165.0 g / 31.0 N
5 mm	100%	4.22 kg / 9.30 pounds 4220.0 g / 41.4 N
10 mm	100%	4.22 kg / 9.30 pounds 4220.0 g / 41.4 N
11 mm	100%	4.22 kg / 9.30 pounds 4220.0 g / 41.4 N
12 mm	100%	4.22 kg / 9.30 pounds 4220.0 g / 41.4 N

A too thin steel cannot conduct the entire magnetic field, which weakens actual performance of the magnet. If you attach a powerful product to a thin surface, the field will penetrate right through and the holding will be smaller. To achieve 100% of this neodymium's power, you need a suitably thick backing of steel. The material oversaturation causes that on thin elements (e.g., appliance housings), the product works worse. We suggest choosing the steel dimension from these parameters.

Table 5: Working in heat (stability) - power drop
MW 15x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	4.22 kg / 9.30 pounds 4220.0 g / 41.4 N	OK
40 °C	-2.2%	4.13 kg / 9.10 pounds 4127.2 g / 40.5 N	OK
60 °C	-4.4%	4.03 kg / 8.89 pounds 4034.3 g / 39.6 N
80 °C	-6.6%	3.94 kg / 8.69 pounds 3941.5 g / 38.7 N
100 °C	-28.8%	3.00 kg / 6.62 pounds 3004.6 g / 29.5 N

Standard neodymium magnets change their properties strength after exceeding the maximum temperature. Avoid high temperatures – excessive heat can permanently demagnetize this magnet. As the temperature rises, the magnet's capacity briefly lowers. Refrain from using this magnet near heat sources exceeding its working range. Too high temperature will cause permanent loss of magnetism.

*Engineering note: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low Pc) may lose charge permanently sooner compared to rod magnets. Warning indicator in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (attraction) - forces in the system
MW 15x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	9.26 kg / 20.41 pounds 4 518 Gs	1.39 kg / 3.06 pounds 1389 g / 13.6 N	N/A
1 mm	8.40 kg / 18.53 pounds 5 555 Gs	1.26 kg / 2.78 pounds 1261 g / 12.4 N	7.56 kg / 16.68 pounds ~0 Gs
2 mm	7.48 kg / 16.48 pounds 5 239 Gs	1.12 kg / 2.47 pounds 1122 g / 11.0 N	6.73 kg / 14.84 pounds ~0 Gs
3 mm	6.54 kg / 14.42 pounds 4 901 Gs	0.98 kg / 2.16 pounds 981 g / 9.6 N	5.89 kg / 12.98 pounds ~0 Gs
5 mm	4.80 kg / 10.59 pounds 4 200 Gs	0.72 kg / 1.59 pounds 721 g / 7.1 N	4.32 kg / 9.53 pounds ~0 Gs
10 mm	1.91 kg / 4.21 pounds 2 648 Gs	0.29 kg / 0.63 pounds 286 g / 2.8 N	1.72 kg / 3.79 pounds ~0 Gs
20 mm	0.28 kg / 0.61 pounds 1 010 Gs	0.04 kg / 0.09 pounds 42 g / 0.4 N	0.25 kg / 0.55 pounds ~0 Gs
50 mm	0.00 kg / 0.01 pounds 128 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.00 pounds 79 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
70 mm	0.00 kg / 0.00 pounds 52 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.00 pounds 36 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.00 pounds 26 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 19 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two strong neodymiums interact from a significantly greater distance than a magnet and steel setup. The connection of two magnets generates a stronger field and a wider radius of performance. Designing a solid fastener? Utilize two neodymiums instead of one magnet and a striker plate. Exercise caution that when connecting a pair of magnets, the collision energy is massive. The levitation is marginally weaker than the connection force, but still large.
*Field value for N-N configuration reaches ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Attention: Estimates apply to sliding force of dual matching magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (implants) - precautionary measures
MW 15x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.5 cm
Hearing aid	10 Gs (1.0 mT)	5.0 cm
Mechanical watch	20 Gs (2.0 mT)	4.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.0 cm
Car key	50 Gs (5.0 mT)	3.0 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation is a real danger to electronic devices and pacemakers. These magnets produce a field that destroys function of digital equipment. Notice: the unseen radiation penetrates the body and housings. Special caution must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: automatic timepieces, car keys, membranes, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - warning
MW 15x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	28.99 km/h (8.05 m/s)	0.17 J
30 mm	49.30 km/h (13.69 m/s)	0.50 J
50 mm	63.63 km/h (17.68 m/s)	0.83 J
100 mm	89.99 km/h (25.00 m/s)	1.66 J

Magnetic elements are prone to chipping – a strong collision with metal causes immediate chipping. Watch the impact speed – a neodymium left loose speeds with massive force. Kinetic force can trigger coating fragments or painful pinches to fingers. Hold the magnet firmly during mounting so it doesn't hit with great force against the metal. A collision at high speed almost guarantees destruction of the neodymium. Wear eye protection when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 15x4 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (P_c)
MW 15x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 659 Mx	56.6 µWb
P_c Coefficient	0.37	Low (Flat)

Flux value emitted by the pole surface. Essential parameter when building generators as well as sensors. P_c value determines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 15x4 / N38

Environment	Effective steel pull	Effect
Air (land)	4.22 kg	Standard
Water (riverbed)	4.83 kg (+0.61 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.

In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

*Caution: On a vertical wall, the magnet holds just approx. 20-30% of its perpendicular strength.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) drastically limits the holding force.

3. Temperature resistance

*For N38 grade, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.37

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

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: 010030-2025

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381.30 ZŁ brutto / pcs

This product is a very strong cylindrical magnet, manufactured from durable NdFeB material, which, at dimensions of Ø15x4 mm, guarantees optimal power. The MW 15x4 / N38 component boasts high dimensional repeatability and professional build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with significant force (approx. 4.22 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Furthermore, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 41.38 N with a weight of only 5.3 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., 15.1 mm) using two-component epoxy glues. To ensure long-term durability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most popular standard for professional neodymium magnets, offering an optimal price-to-power ratio and operational stability. If you need even stronger magnets in the same volume (Ø15x4), 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 15 mm and height 4 mm. The value of 41.38 N means that the magnet is capable of holding a weight many times exceeding its own mass of 5.3 g. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 4 mm), which means that the N and S poles are located on the flat, circular surfaces. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized through the diameter if your project requires it.

Pros as well as cons of rare earth magnets.

Benefits

Apart from their strong magnetic energy, neodymium magnets have these key benefits:

Their strength remains stable, and after approximately 10 years it drops only by ~1% (theoretically),
Magnets perfectly defend themselves against loss of magnetization caused by external fields,
The use of an metallic finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
Neodymium magnets create maximum magnetic induction on a small area, which ensures high operational effectiveness,
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 versatility in shaping and the ability to adapt to client solutions,
Significant place in modern technologies – they serve a role in HDD drives, electromotive mechanisms, medical devices, as well as complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which allows their use in compact constructions

Limitations

Disadvantages of NdFeB magnets:

Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a special holder, which not only protects them against impacts but also increases their durability
Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
We recommend a housing - magnetic mount, due to difficulties in creating nuts inside the magnet and complicated forms.
Possible danger resulting from small fragments of magnets are risky, if swallowed, which gains importance in the context of child safety. Additionally, small elements of these devices are able to disrupt the diagnostic process medical when they are in the body.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Lifting parameters

Magnetic strength at its maximum – what affects it?

The declared magnet strength refers to the peak performance, measured under optimal environment, specifically:

using a plate made of high-permeability steel, serving as a ideal flux conductor
possessing a thickness of min. 10 mm to ensure full flux closure
with an ideally smooth touching surface
without the slightest clearance between the magnet and steel
under perpendicular force vector (90-degree angle)
in temp. approx. 20°C

Practical lifting capacity: influencing factors

During everyday use, the real power results from many variables, ranked from crucial:

Space between surfaces – every millimeter of distance (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
Plate thickness – too thin plate causes magnetic saturation, causing part of the flux to be wasted into the air.
Chemical composition of the base – mild steel gives the best results. Higher carbon content lower magnetic permeability and holding force.
Surface finish – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
Temperature – heating the magnet causes a temporary drop of induction. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, however under shearing force the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet and the plate decreases the load capacity.

H&S for magnets

Do not overheat magnets

Watch the temperature. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and strength.

Safe distance

Device Safety: Strong magnets can damage data carriers and delicate electronics (heart implants, medical aids, timepieces).

Precision electronics

A powerful magnetic field interferes with the functioning of compasses in phones and navigation systems. Keep magnets near a device to avoid breaking the sensors.

Immense force

Use magnets consciously. Their huge power can surprise even professionals. Plan your moves and respect their power.

Allergic reactions

Certain individuals experience a sensitization to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching may cause a rash. We strongly advise use protective gloves.

Mechanical processing

Machining of NdFeB material poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Swallowing risk

Absolutely store magnets out of reach of children. Choking hazard is significant, and the consequences of magnets clamping inside the body are very dangerous.

Medical implants

Patients with a heart stimulator have to maintain an absolute distance from magnets. The magnetic field can disrupt the operation of the life-saving device.

Beware of splinters

NdFeB magnets are ceramic materials, which means they are fragile like glass. Clashing of two magnets will cause them shattering into small pieces.

Physical harm

Watch your fingers. Two powerful magnets will snap together immediately with a force of massive weight, crushing everything in their path. Be careful!

Security! Details about hazards in the article: Safety of working with magnets.

MW 15x4 / N38 - cylindrical magnet

Technical - MW 15x4 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the product - data

Table 1: Static force (pull vs distance) - power drop MW 15x4 / N38

Table 2: Vertical force (wall) MW 15x4 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MW 15x4 / N38

Table 4: Material efficiency (saturation) - power losses MW 15x4 / N38

Table 5: Working in heat (stability) - power drop MW 15x4 / N38

Table 6: Two magnets (attraction) - forces in the system MW 15x4 / N38

Table 7: Hazards (implants) - precautionary measures MW 15x4 / N38

Table 8: Impact energy (kinetic energy) - warning MW 15x4 / N38

Table 9: Anti-corrosion coating durability MW 15x4 / N38

Table 10: Construction data (Pc) MW 15x4 / N38

Table 11: Hydrostatics and buoyancy MW 15x4 / N38

1. Shear force

2. Efficiency vs thickness

3. Temperature resistance

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

Elemental analysis

Environmental data

Pulling force

Magnetic Field

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MW 12.5x2 / N38 - cylindrical magnet

SM 32x100 [2xM8] / N52 - magnetic separator

Pros as well as cons of rare earth magnets.

Benefits

Limitations

Lifting parameters

Magnetic strength at its maximum – what affects it?

Practical lifting capacity: influencing factors

H&S for magnets

Do not overheat magnets

Safe distance

Precision electronics

Immense force

Allergic reactions

Mechanical processing

Swallowing risk

Medical implants

Beware of splinters

Physical harm

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - power drop
MW 15x4 / N38

Table 2: Vertical force (wall)
MW 15x4 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 15x4 / N38

Table 4: Material efficiency (saturation) - power losses
MW 15x4 / N38

Table 5: Working in heat (stability) - power drop
MW 15x4 / N38

Table 6: Two magnets (attraction) - forces in the system
MW 15x4 / N38

Table 7: Hazards (implants) - precautionary measures
MW 15x4 / N38

Table 8: Impact energy (kinetic energy) - warning
MW 15x4 / N38

Table 9: Anti-corrosion coating durability
MW 15x4 / N38

Table 10: Construction data (P_c)
MW 15x4 / N38

Table 11: Hydrostatics and buoyancy
MW 15x4 / N38