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MW 8x15 / 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 010102

GTIN/EAN: 5906301811015

5.00

Diameter Ø

8 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

5.65 g

Magnetization Direction

↑ axial

Load capacity

1.47 kg / 14.45 N

Magnetic Induction

598.12 mT / 5981 Gs

Coating

[NiCuNi] Nickel

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3.44 ZŁ with VAT / pcs + price for transport

2.80 ZŁ net + 23% VAT / pcs

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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.

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Technical specification - MW 8x15 / N38 - cylindrical magnet

Specification / characteristics - MW 8x15 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010102
GTIN/EAN	5906301811015
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	8 mm [±0,1 mm]
Height	15 mm [±0,1 mm]
Weight	5.65 g
Magnetization Direction	↑ axial
Load capacity ~ ?	1.47 kg / 14.45 N
Magnetic Induction ~ ?	598.12 mT / 5981 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 8x15 / 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 assembly - report

Presented data are the direct effect of a physical calculation. Results rely on algorithms for the class Nd₂Fe₁₄B. Operational conditions may deviate from the simulation results. Please consider these data as a supplementary guide during assembly planning.

Table 1: Static pull force (pull vs distance) - interaction chart
MW 8x15 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5975 Gs 597.5 mT	1.47 kg / 3.24 pounds 1470.0 g / 14.4 N	safe
1 mm	4511 Gs 451.1 mT	0.84 kg / 1.85 pounds 837.8 g / 8.2 N	safe
2 mm	3262 Gs 326.2 mT	0.44 kg / 0.97 pounds 438.2 g / 4.3 N	safe
3 mm	2332 Gs 233.2 mT	0.22 kg / 0.49 pounds 224.0 g / 2.2 N	safe
5 mm	1238 Gs 123.8 mT	0.06 kg / 0.14 pounds 63.1 g / 0.6 N	safe
10 mm	366 Gs 36.6 mT	0.01 kg / 0.01 pounds 5.5 g / 0.1 N	safe
15 mm	155 Gs 15.5 mT	0.00 kg / 0.00 pounds 1.0 g / 0.0 N	safe
20 mm	80 Gs 8.0 mT	0.00 kg / 0.00 pounds 0.3 g / 0.0 N	safe
30 mm	30 Gs 3.0 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	safe
50 mm	8 Gs 0.8 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	safe

Pulling power drops significantly per each millimeter of distance. Note that every additional insulation layer (e.g., contamination, paint, veneer) significantly weakens the grip. Magnetic products operate strongest in perfect adhesion; distance drastically cuts the power. Observe how flashily the pull force fall, when the magnet does not touch directly to the metal substrate. When designing the mounting, avoid additional spacers.

Table 2: Slippage force (vertical surface)
MW 8x15 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.29 kg / 0.65 pounds 294.0 g / 2.9 N
1 mm	Stal (~0.2)	0.17 kg / 0.37 pounds 168.0 g / 1.6 N
2 mm	Stal (~0.2)	0.09 kg / 0.19 pounds 88.0 g / 0.9 N
3 mm	Stal (~0.2)	0.04 kg / 0.10 pounds 44.0 g / 0.4 N
5 mm	Stal (~0.2)	0.01 kg / 0.03 pounds 12.0 g / 0.1 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 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

The following data defines the estimated force necessary to start the downward movement of the magnet vertically along a upright metal surface (considering standard friction). The holding force varies with the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MW 8x15 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.44 kg / 0.97 pounds 441.0 g / 4.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.29 kg / 0.65 pounds 294.0 g / 2.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.15 kg / 0.32 pounds 147.0 g / 1.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.74 kg / 1.62 pounds 735.0 g / 7.2 N

When mounting a magnet on a upright plane (e.g., a car body), it will only hold only approx. 1/5 of nominal attraction strength. Gravitational force and a low friction coefficient influence the fact that products slip easier than they detach. Want to create a wall mount? Consider that the sliding force is significantly lower than the perpendicular breakaway force. On a painted metal, the element will slide down under a significantly smaller load. Using a rubber pad can drastically increase the grip.

Table 4: Steel thickness (substrate influence) - power losses
MW 8x15 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.15 kg / 0.32 pounds 147.0 g / 1.4 N
1 mm	25%	0.37 kg / 0.81 pounds 367.5 g / 3.6 N
2 mm	50%	0.74 kg / 1.62 pounds 735.0 g / 7.2 N
3 mm	75%	1.10 kg / 2.43 pounds 1102.5 g / 10.8 N
5 mm	100%	1.47 kg / 3.24 pounds 1470.0 g / 14.4 N
10 mm	100%	1.47 kg / 3.24 pounds 1470.0 g / 14.4 N
11 mm	100%	1.47 kg / 3.24 pounds 1470.0 g / 14.4 N
12 mm	100%	1.47 kg / 3.24 pounds 1470.0 g / 14.4 N

A too thin steel cannot focus the entire magnetic field, which weakens actual performance of the holder. If you attach a powerful product to a thin surface, the field will pass right through and the holding will be smaller. To achieve full efficiency of this neodymium's power, you need a suitably thick element of metal. The saturation phenomenon means that on thin elements (e.g., thin profiles), the holder shows lower pull force. We suggest choosing the steel thickness according to the table below.

Table 5: Thermal resistance (material behavior) - power drop
MW 8x15 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	1.47 kg / 3.24 pounds 1470.0 g / 14.4 N	OK
40 °C	-2.2%	1.44 kg / 3.17 pounds 1437.7 g / 14.1 N	OK
60 °C	-4.4%	1.41 kg / 3.10 pounds 1405.3 g / 13.8 N	OK
80 °C	-6.6%	1.37 kg / 3.03 pounds 1373.0 g / 13.5 N
100 °C	-28.8%	1.05 kg / 2.31 pounds 1046.6 g / 10.3 N

Standard neodymium magnets lose strength past the thermal threshold. Protect against heat – high temperature can irreversibly damage this magnet. With every degree above norm, the magnet's capacity momentarily drops. Do not use this product in hot environments exceeding its working range. Exceeding the critical threshold will cause destruction of magnetic properties.

*Technical advisory: Heat tolerance is determined by both grade, as well as the dimension ratios. Flat magnets (low Pc) may lose charge permanently at lower temperatures than taller cylinders. Warning indicator in the table points to permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - field collision
MW 8x15 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	11.06 kg / 24.39 pounds 6 130 Gs	1.66 kg / 3.66 pounds 1660 g / 16.3 N	N/A
1 mm	8.49 kg / 18.72 pounds 10 469 Gs	1.27 kg / 2.81 pounds 1274 g / 12.5 N	7.64 kg / 16.85 pounds ~0 Gs
2 mm	6.31 kg / 13.90 pounds 9 022 Gs	0.95 kg / 2.09 pounds 946 g / 9.3 N	5.68 kg / 12.51 pounds ~0 Gs
3 mm	4.59 kg / 10.12 pounds 7 697 Gs	0.69 kg / 1.52 pounds 688 g / 6.8 N	4.13 kg / 9.11 pounds ~0 Gs
5 mm	2.36 kg / 5.20 pounds 5 516 Gs	0.35 kg / 0.78 pounds 354 g / 3.5 N	2.12 kg / 4.68 pounds ~0 Gs
10 mm	0.48 kg / 1.05 pounds 2 476 Gs	0.07 kg / 0.16 pounds 71 g / 0.7 N	0.43 kg / 0.94 pounds ~0 Gs
20 mm	0.04 kg / 0.09 pounds 731 Gs	0.01 kg / 0.01 pounds 6 g / 0.1 N	0.04 kg / 0.08 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 94 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.00 pounds 60 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 41 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 29 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 21 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 16 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnetic products interact from a wider radius than a neodymium and metal combination. The setup of two magnets creates a more powerful interaction and a wider radius of performance. Designing a solid fastener? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when connecting a pair of magnets, the impact force is huge. The repulsion force is slightly lower than the attraction, but still large.
*Field value for N-N configuration drops to ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
Attention: Figures refer to sliding force of two matching magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (electronics) - warnings
MW 8x15 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.0 cm
Hearing aid	10 Gs (1.0 mT)	5.0 cm
Timepiece	20 Gs (2.0 mT)	4.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.0 cm
Remote	50 Gs (5.0 mT)	2.5 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 poses a large risk to electronics and medical implants. These NdFeB products generate a field that destroys function of digital equipment. Remember: the unseen radiation penetrates the body and plastic. Special caution must be taken by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, car keys, membranes, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - warning
MW 8x15 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	16.31 km/h (4.53 m/s)	0.06 J
30 mm	28.18 km/h (7.83 m/s)	0.17 J
50 mm	36.37 km/h (10.10 m/s)	0.29 J
100 mm	51.44 km/h (14.29 m/s)	0.58 J

Magnetic elements are very brittle – a violent impact against metal risks their cracking. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Striking energy can trigger coating fragments or painful pinches to skin. Be sure to control the product during installation so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h means shattering of the neodymium. Use safety goggles when handling with large magnets.

Table 9: Surface protection spec
MW 8x15 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (P_c)
MW 8x15 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	3 306 Mx	33.1 µWb
P_c Coefficient	1.19	High (Stable)

Flux value emitted by the magnet pole. Key data for generator designers as well as sensors. The P_c coefficient defines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 8x15 / N38

Environment	Effective steel pull	Effect
Air (land)	1.47 kg	Standard
Water (riverbed)	1.68 kg (+0.21 kg buoyancy gain)	+14.5%

Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

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

1. Vertical hold

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

2. Steel saturation

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

3. Power loss vs temp

*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) = 1.19

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.

Technical and environmental data

Chemical composition

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: 010102-2026

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UMH 25x8x45 [M5] / N38 - magnetic holder with hook

14.49 ZŁ brutto / pcs

This product is a very strong cylinder magnet, produced from advanced NdFeB material, which, at dimensions of Ø8x15 mm, guarantees the highest energy density. This specific item is characterized by a tolerance of ±0.1mm and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 1.47 kg), this product is in stock from our warehouse in Poland, ensuring quick order fulfillment. Additionally, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is created for building electric motors, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the pull force of 14.45 N with a weight of only 5.65 g, this rod is indispensable in electronics and wherever every gram matters.

Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure stability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.

Grade N38 is the most popular standard for professional neodymium magnets, offering a great economic balance and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø8x15), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

This model is characterized by dimensions Ø8x15 mm, which, at a weight of 5.65 g, makes it an element with high magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 1.47 kg (force ~14.45 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 15 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.

Advantages as well as disadvantages of neodymium magnets.

Strengths

Besides their exceptional pulling force, neodymium magnets offer the following advantages:

They do not lose strength, even after nearly 10 years – the decrease in lifting capacity is only ~1% (based on measurements),
They maintain their magnetic properties even under external field action,
In other words, due to the smooth finish of nickel, the element looks attractive,
Magnetic induction on the working part of the magnet turns out to be very high,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
Possibility of exact shaping and adjusting to individual needs,
Universal use in modern industrial fields – they serve a role in magnetic memories, brushless drives, advanced medical instruments, as well as complex engineering applications.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Limitations

Cons of neodymium magnets: application proposals

They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
Neodymium magnets lose their force 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
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
Limited possibility of producing nuts in the magnet and complex shapes - preferred is casing - magnetic holder.
Health risk related to microscopic parts of magnets are risky, in case of ingestion, which becomes key in the context of child health protection. Furthermore, small components of these devices are able to be problematic in diagnostics medical in case of swallowing.
Due to expensive raw materials, their price is relatively high,

Lifting parameters

Magnetic strength at its maximum – what it depends on?

Magnet power was determined for the most favorable conditions, including:

on a base made of structural steel, perfectly concentrating the magnetic flux
whose transverse dimension equals approx. 10 mm
with an polished contact surface
with zero gap (no impurities)
for force applied at a right angle (in the magnet axis)
in stable room temperature

Magnet lifting force in use – key factors

In practice, the real power depends on several key aspects, ranked from crucial:

Clearance – the presence of any layer (rust, dirt, air) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
Direction of force – highest force is obtained only during perpendicular pulling. The shear force of the magnet along the surface is standardly several times lower (approx. 1/5 of the lifting capacity).
Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
Steel grade – ideal substrate is pure iron steel. Hardened steels may have worse magnetic properties.
Surface finish – full contact is possible only on polished steel. Rough texture create air cushions, reducing force.
Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet and the plate lowers the lifting capacity.

Safe handling of neodymium magnets

Magnets are brittle

Despite metallic appearance, neodymium is delicate and not impact-resistant. Avoid impacts, as the magnet may shatter into hazardous fragments.

Choking Hazard

Product intended for adults. Small elements pose a choking risk, causing intestinal necrosis. Store out of reach of children and animals.

Safe distance

Do not bring magnets close to a purse, computer, or screen. The magnetism can irreversibly ruin these devices and wipe information from cards.

Sensitization to coating

Studies show that nickel (the usual finish) is a potent allergen. For allergy sufferers, avoid direct skin contact or choose coated magnets.

Dust explosion hazard

Fire warning: Neodymium dust is explosive. Avoid machining magnets without safety gear as this may cause fire.

Implant safety

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

Pinching danger

Protect your hands. Two large magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Be careful!

Compass and GPS

Be aware: neodymium magnets generate a field that interferes with precision electronics. Keep a safe distance from your mobile, device, and navigation systems.

Thermal limits

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will ruin its properties and pulling force.

Safe operation

Handle with care. Rare earth magnets act from a distance and connect with huge force, often faster than you can react.

Security! Want to know more? Check our post: Why are neodymium magnets dangerous?

MW 8x15 / N38 - cylindrical magnet

Technical specification - MW 8x15 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the assembly - report

Table 1: Static pull force (pull vs distance) - interaction chart MW 8x15 / N38

Table 2: Slippage force (vertical surface) MW 8x15 / N38

Table 3: Wall mounting (shearing) - vertical pull MW 8x15 / N38

Table 4: Steel thickness (substrate influence) - power losses MW 8x15 / N38

Table 5: Thermal resistance (material behavior) - power drop MW 8x15 / N38

Table 6: Two magnets (repulsion) - field collision MW 8x15 / N38

Table 7: Safety (HSE) (electronics) - warnings MW 8x15 / N38

Table 8: Dynamics (kinetic energy) - warning MW 8x15 / N38

Table 9: Surface protection spec MW 8x15 / N38

Table 10: Electrical data (Pc) MW 8x15 / N38

Table 11: Hydrostatics and buoyancy MW 8x15 / N38

1. Vertical hold

2. Steel saturation

3. Power loss vs temp

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

Chemical composition

Sustainability

Force (pull)

Magnetic Field

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UMH 25x8x45 [M5] / N38 - magnetic holder with hook

Advantages as well as disadvantages of neodymium magnets.

Strengths

Limitations

Lifting parameters

Magnetic strength at its maximum – what it depends on?

Magnet lifting force in use – key factors

Safe handling of neodymium magnets

Magnets are brittle

Choking Hazard

Safe distance

Sensitization to coating

Dust explosion hazard

Implant safety

Pinching danger

Compass and GPS

Thermal limits

Safe operation

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - interaction chart
MW 8x15 / N38

Table 2: Slippage force (vertical surface)
MW 8x15 / N38

Table 3: Wall mounting (shearing) - vertical pull
MW 8x15 / N38

Table 4: Steel thickness (substrate influence) - power losses
MW 8x15 / N38

Table 5: Thermal resistance (material behavior) - power drop
MW 8x15 / N38

Table 6: Two magnets (repulsion) - field collision
MW 8x15 / N38

Table 7: Safety (HSE) (electronics) - warnings
MW 8x15 / N38

Table 8: Dynamics (kinetic energy) - warning
MW 8x15 / N38

Table 9: Surface protection spec
MW 8x15 / N38

Table 10: Electrical data (P_c)
MW 8x15 / N38

Table 11: Hydrostatics and buoyancy
MW 8x15 / N38