Product available Ships tomorrow

MW 15x4 / 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
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

technical parameters »

1.968 ZŁ with VAT / pcs + price for transport

1.600 ZŁ net + 23% VAT / pcs

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Product card - 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

Engineering analysis of the assembly - data

These information represent the result of a mathematical simulation. Results rely on algorithms for the material Nd₂Fe₁₄B. Actual performance may deviate from the simulation results. Use these data as a reference point for designers.

Table 1: Static pull force (force 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 lbs 4220.0 g / 41.4 N	warning
1 mm	2620 Gs 262.0 mT	3.41 kg / 7.51 lbs 3408.2 g / 33.4 N	warning
2 mm	2276 Gs 227.6 mT	2.57 kg / 5.67 lbs 2571.6 g / 25.2 N	warning
3 mm	1928 Gs 192.8 mT	1.85 kg / 4.07 lbs 1845.5 g / 18.1 N	weak grip
5 mm	1324 Gs 132.4 mT	0.87 kg / 1.92 lbs 870.3 g / 8.5 N	weak grip
10 mm	505 Gs 50.5 mT	0.13 kg / 0.28 lbs 126.7 g / 1.2 N	weak grip
15 mm	222 Gs 22.2 mT	0.02 kg / 0.05 lbs 24.4 g / 0.2 N	weak grip
20 mm	113 Gs 11.3 mT	0.01 kg / 0.01 lbs 6.3 g / 0.1 N	weak grip
30 mm	40 Gs 4.0 mT	0.00 kg / 0.00 lbs 0.8 g / 0.0 N	weak grip
50 mm	10 Gs 1.0 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	weak grip

Magnetic force weakens drastically with every mm of spacing. Remember that every additional insulation layer (e.g., dirt, varnish, veneer) noticeably reduces the pull force. Magnetic products work optimally during direct contact; air break nullifies the force. Notice how quickly the pull force drop, when the product does not touch flatly to the steel surface. When planning the arrangement, discard redundant distances.

Table 2: Slippage 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 lbs 844.0 g / 8.3 N
1 mm	Stal (~0.2)	0.68 kg / 1.50 lbs 682.0 g / 6.7 N
2 mm	Stal (~0.2)	0.51 kg / 1.13 lbs 514.0 g / 5.0 N
3 mm	Stal (~0.2)	0.37 kg / 0.82 lbs 370.0 g / 3.6 N
5 mm	Stal (~0.2)	0.17 kg / 0.38 lbs 174.0 g / 1.7 N
10 mm	Stal (~0.2)	0.03 kg / 0.06 lbs 26.0 g / 0.3 N
15 mm	Stal (~0.2)	0.00 kg / 0.01 lbs 4.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 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 estimated force necessary to cause the shifting of the magnet down against a vertical steel plate (considering standard friction). This parameter depends on the separation distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - 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 lbs 1266.0 g / 12.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.84 kg / 1.86 lbs 844.0 g / 8.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.42 kg / 0.93 lbs 422.0 g / 4.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.11 kg / 4.65 lbs 2110.0 g / 20.7 N

When mounting a magnet on a upright wall (e.g., a board), it will only hold barely about 20%-30% of its maximum pull force. Gravitational force and a weak degree of grip mean that products move down easier than they detach. Designing a wall mount? Note that the shear force is much weaker than the maximum static pull force. On a smooth steel, the element will slide down under a much lighter load. Utilizing a rubberized coating can significantly raise the stability.

Table 4: Material efficiency (substrate influence) - 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 lbs 422.0 g / 4.1 N
1 mm	25%	1.06 kg / 2.33 lbs 1055.0 g / 10.3 N
2 mm	50%	2.11 kg / 4.65 lbs 2110.0 g / 20.7 N
3 mm	75%	3.17 kg / 6.98 lbs 3165.0 g / 31.0 N
5 mm	100%	4.22 kg / 9.30 lbs 4220.0 g / 41.4 N
10 mm	100%	4.22 kg / 9.30 lbs 4220.0 g / 41.4 N
11 mm	100%	4.22 kg / 9.30 lbs 4220.0 g / 41.4 N
12 mm	100%	4.22 kg / 9.30 lbs 4220.0 g / 41.4 N

A thin metal plate is not enough to focus the entire magnetic field, which wastes potential of the magnet. If you mount a strong magnet to a weak sheet, the field will penetrate right through and the pull force will drop sharply. To utilize the maximum of this neodymium's potential, you need a suitably thick piece of steel. The saturation effect causes that on thin elements (e.g., thin profiles), the holder holds weaker. We recommend selecting the steel dimension from these parameters.

Table 5: Thermal resistance (stability) - thermal limit
MW 15x4 / N38

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

Ordinary NdFeB products change their properties parameters past the thermal threshold. Protect against heat – heat can irreversibly destroy this magnet. With every degree above norm, the neodymium's power temporarily lowers. Avoid using this magnet in hot environments higher than its operating temperature limit. Too high temperature will result in destruction of magnetic properties.

*Important note: Thermal stability depends not only on the material grade, but also on the magnet's shape. Thin magnets (low permeance coefficient) may lose charge permanently at lower temperatures compared to rod magnets. Warning indicator in the table signals a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 15x4 / N38

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

Two magnetic products attract each other from a significantly greater distance than a magnet and sheet combination. The setup of two magnets produces a massive flux and a further horizon of operation. Designing a strong closure? Apply two magnets instead of a neodymium and a striker plate. Remember that when bringing together two magnets, the impact force is huge. The repulsion force is a bit weaker than the connection force, but still significant.
*Flux density for N-N configuration reaches ~0 Gs at the geometric center between the magnets (due to field cancellation).
Note: Results refer to shear force of a pair of identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - warnings
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

Extremely neodym field poses a serious hazard to electronic devices as well as pacemakers. These NdFeB products produce a field that destroys function of sensitive medical devices. Remember: the unseen radiation acts through matter and plastic. Increased vigilance must be taken by people with cochlear implants and insulin pumps. Also at risk are: automatic timepieces, car keys, membranes, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Collisions (cracking risk) - 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 delicate – a collision with steel causes immediate chipping. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Impact energy can cause material chips or painful pinches to skin. Hold the magnet firmly during bringing near metal so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear safety glasses when working with powerful specimens.

Table 9: Coating parameters (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: Electrical data (Flux)
MW 15x4 / N38

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

Total magnetic flux passing through the pole surface. Essential parameter for generator designers and motors. The P_c coefficient defines the magnet's operating point.

Table 11: Physics of underwater searching
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: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

The magnetic field penetrates through water without any losses. However, remember the water resistance when pulling the rope quickly.

1. Wall mount (shear)

*Note: On a vertical surface, the magnet retains merely ~20% of its nominal pull.

2. Steel thickness impact

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

3. Power loss vs temp

*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) = 0.37

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.

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%

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: 010030-2026

Measurement Calculator

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Force in kg

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MW 6x3 / N38 - cylindrical magnet

0.381 ZŁ brutto / pcs

The presented product is an extremely powerful cylindrical magnet, composed of modern NdFeB material, which, with dimensions of Ø15x4 mm, guarantees the highest energy density. The MW 15x4 / N38 component features high dimensional repeatability and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 4.22 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

It finds application 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 cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.

Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 15.1 mm) using epoxy glues. To ensure long-term durability in industry, anaerobic resins 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 extreme miniaturization with maximum force is not required. 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.

This model is characterized by dimensions Ø15x4 mm, which, at a weight of 5.3 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 4.22 kg (force ~41.38 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, 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 15 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 diametrically if your project requires it.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Strengths

Besides their high retention, neodymium magnets are valued for these benefits:

They retain magnetic properties for around ten years – the loss is just ~1% (according to analyses),
Magnets effectively defend themselves against loss of magnetization caused by external fields,
In other words, due to the reflective layer of silver, the element looks attractive,
They show high magnetic induction at the operating surface, making them more effective,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
In view of the possibility of precise molding and adaptation to individualized solutions, magnetic components can be created in a variety of forms and dimensions, which amplifies use scope,
Universal use in electronics industry – they serve a role in HDD drives, electric drive systems, diagnostic systems, and modern systems.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Disadvantages of neodymium magnets:

To avoid cracks under impact, we recommend using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
We recommend casing - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complicated shapes.
Health risk to health – tiny shards of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child health protection. It is also worth noting that small components of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
Due to expensive raw materials, their price exceeds standard values,

Holding force characteristics

Maximum lifting capacity of the magnet – what affects it?

The load parameter shown represents the peak performance, recorded under ideal test conditions, namely:

using a sheet made of low-carbon steel, serving as a ideal flux conductor
whose transverse dimension equals approx. 10 mm
characterized by smoothness
without the slightest insulating layer between the magnet and steel
for force acting at a right angle (in the magnet axis)
at conditions approx. 20°C

Key elements affecting lifting force

Bear in mind that the magnet holding will differ influenced by the following factors, in order of importance:

Clearance – the presence of any layer (paint, dirt, air) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
Steel thickness – too thin steel does not accept the full field, causing part of the flux to be lost to the other side.
Steel grade – ideal substrate is pure iron steel. Stainless steels may attract less.
Base smoothness – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Roughness creates an air distance.
Thermal environment – heating the magnet causes a temporary drop of force. Check the thermal limit for a given model.

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, whereas under parallel forces the holding force is lower. In addition, even a small distance between the magnet and the plate reduces the holding force.

H&S for magnets

Material brittleness

Neodymium magnets are ceramic materials, which means they are prone to chipping. Impact of two magnets will cause them cracking into shards.

Crushing force

Mind your fingers. Two large magnets will join instantly with a force of massive weight, crushing everything in their path. Be careful!

Danger to pacemakers

People with a pacemaker have to keep an absolute distance from magnets. The magnetic field can disrupt the functioning of the implant.

This is not a toy

NdFeB magnets are not toys. Eating several magnets may result in them connecting inside the digestive tract, which constitutes a direct threat to life and requires immediate surgery.

Compass and GPS

Note: neodymium magnets produce a field that confuses sensitive sensors. Keep a safe distance from your phone, tablet, and GPS.

Electronic hazard

Powerful magnetic fields can erase data on credit cards, HDDs, and other magnetic media. Keep a distance of min. 10 cm.

Fire warning

Mechanical processing of neodymium magnets poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Operating temperature

Keep cool. Neodymium magnets are sensitive to temperature. If you need resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

Do not underestimate power

Before starting, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.

Warning for allergy sufferers

Nickel alert: The nickel-copper-nickel coating consists of nickel. If skin irritation appears, immediately stop handling magnets and use protective gear.

Danger! Looking for details? Read our article: Why are neodymium magnets dangerous?

MW 15x4 / N38 - cylindrical magnet

Product card - MW 15x4 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the assembly - data

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

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

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

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

Table 5: Thermal resistance (stability) - thermal limit MW 15x4 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MW 15x4 / N38

Table 7: Protective zones (electronics) - warnings MW 15x4 / N38

Table 8: Collisions (cracking risk) - warning MW 15x4 / N38

Table 9: Coating parameters (durability) MW 15x4 / N38

Table 10: Electrical data (Flux) MW 15x4 / N38

Table 11: Physics of underwater searching MW 15x4 / N38

1. Wall mount (shear)

2. Steel thickness impact

3. Power loss vs temp

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

Material specification

Sustainability

Pulling force

Field Strength

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MW 6x3 / N38 - cylindrical magnet

Advantages as well as disadvantages of Nd2Fe14B magnets.

Strengths

Disadvantages

Holding force characteristics

Maximum lifting capacity of the magnet – what affects it?

Key elements affecting lifting force

H&S for magnets

Material brittleness

Crushing force

Danger to pacemakers

This is not a toy

Compass and GPS

Electronic hazard

Fire warning

Operating temperature

Do not underestimate power

Warning for allergy sufferers

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

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

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

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

Table 5: Thermal resistance (stability) - thermal limit
MW 15x4 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 15x4 / N38

Table 7: Protective zones (electronics) - warnings
MW 15x4 / N38

Table 8: Collisions (cracking risk) - warning
MW 15x4 / N38

Table 9: Coating parameters (durability)
MW 15x4 / N38

Table 10: Electrical data (Flux)
MW 15x4 / N38

Table 11: Physics of underwater searching
MW 15x4 / N38

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.