Product available Ships tomorrow

MW 40x15 / 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 010067

GTIN/EAN: 5906301810667

Diameter Ø

40 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

141.37 g

Magnetization Direction

↑ axial

Load capacity

42.64 kg / 418.33 N

Magnetic Induction

371.91 mT / 3719 Gs

Coating

[NiCuNi] Nickel

see technical data »

65.93 ZŁ with VAT / pcs + price for transport

53.60 ZŁ net + 23% VAT / pcs

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Technical details - MW 40x15 / N38 - cylindrical magnet

Specification / characteristics - MW 40x15 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010067
GTIN/EAN	5906301810667
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	40 mm [±0,1 mm]
Height	15 mm [±0,1 mm]
Weight	141.37 g
Magnetization Direction	↑ axial
Load capacity ~ ?	42.64 kg / 418.33 N
Magnetic Induction ~ ?	371.91 mT / 3719 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 40x15 / 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

Physical modeling of the assembly - report

The following data represent the outcome of a physical analysis. Values were calculated on models for the class Nd₂Fe₁₄B. Real-world performance might slightly differ from theoretical values. Treat these calculations as a reference point for designers.

Table 1: Static force (force vs distance) - characteristics
MW 40x15 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3718 Gs 371.8 mT	42.64 kg / 94.00 LBS 42640.0 g / 418.3 N	critical level
1 mm	3563 Gs 356.3 mT	39.16 kg / 86.33 LBS 39159.5 g / 384.2 N	critical level
2 mm	3398 Gs 339.8 mT	35.62 kg / 78.52 LBS 35617.1 g / 349.4 N	critical level
3 mm	3228 Gs 322.8 mT	32.13 kg / 70.84 LBS 32130.5 g / 315.2 N	critical level
5 mm	2880 Gs 288.0 mT	25.58 kg / 56.40 LBS 25584.2 g / 251.0 N	critical level
10 mm	2069 Gs 206.9 mT	13.20 kg / 29.09 LBS 13196.7 g / 129.5 N	critical level
15 mm	1439 Gs 143.9 mT	6.38 kg / 14.07 LBS 6383.1 g / 62.6 N	warning
20 mm	999 Gs 99.9 mT	3.08 kg / 6.79 LBS 3077.9 g / 30.2 N	warning
30 mm	507 Gs 50.7 mT	0.79 kg / 1.75 LBS 792.4 g / 7.8 N	weak grip
50 mm	169 Gs 16.9 mT	0.09 kg / 0.19 LBS 88.4 g / 0.9 N	weak grip

Magnetic force decreases significantly with every subsequent millimeter of gap. Note that even a very thin break (e.g., contamination, paint, veneer) strongly weakens the grip. Neodymiums work strongest at the point of direct contact; gap nullifies the force. See how flashily the parameters fall, when the product does not touch tightly to the metal substrate. When calculating the mounting, avoid redundant distances.

Table 2: Shear hold (wall)
MW 40x15 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	8.53 kg / 18.80 LBS 8528.0 g / 83.7 N
1 mm	Stal (~0.2)	7.83 kg / 17.27 LBS 7832.0 g / 76.8 N
2 mm	Stal (~0.2)	7.12 kg / 15.71 LBS 7124.0 g / 69.9 N
3 mm	Stal (~0.2)	6.43 kg / 14.17 LBS 6426.0 g / 63.0 N
5 mm	Stal (~0.2)	5.12 kg / 11.28 LBS 5116.0 g / 50.2 N
10 mm	Stal (~0.2)	2.64 kg / 5.82 LBS 2640.0 g / 25.9 N
15 mm	Stal (~0.2)	1.28 kg / 2.81 LBS 1276.0 g / 12.5 N
20 mm	Stal (~0.2)	0.62 kg / 1.36 LBS 616.0 g / 6.0 N
30 mm	Stal (~0.2)	0.16 kg / 0.35 LBS 158.0 g / 1.5 N
50 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 18.0 g / 0.2 N

The table below presents the approximate force sufficient to initiate the slippage of the magnet vertically along a vertical steel plate (considering typical friction). This parameter depends on the distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - vertical pull
MW 40x15 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	12.79 kg / 28.20 LBS 12792.0 g / 125.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	8.53 kg / 18.80 LBS 8528.0 g / 83.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	4.26 kg / 9.40 LBS 4264.0 g / 41.8 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	21.32 kg / 47.00 LBS 21320.0 g / 209.1 N

When mounting a magnet on a upright wall (e.g., a fridge), it will maintain just approx. 1/5 of its nominal power. Gravity as well as a weak degree of grip cause that holders slide down faster than they pop off the substrate. Designing a wall mount? Consider that the sliding force is significantly lower than the perpendicular breakaway force. On a slippery surface, the magnet will slip down under a significantly smaller load. Utilizing a rubberized pad can drastically raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 40x15 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	2.13 kg / 4.70 LBS 2132.0 g / 20.9 N
1 mm	13%	5.33 kg / 11.75 LBS 5330.0 g / 52.3 N
2 mm	25%	10.66 kg / 23.50 LBS 10660.0 g / 104.6 N
3 mm	38%	15.99 kg / 35.25 LBS 15990.0 g / 156.9 N
5 mm	63%	26.65 kg / 58.75 LBS 26650.0 g / 261.4 N
10 mm	100%	42.64 kg / 94.00 LBS 42640.0 g / 418.3 N
11 mm	100%	42.64 kg / 94.00 LBS 42640.0 g / 418.3 N
12 mm	100%	42.64 kg / 94.00 LBS 42640.0 g / 418.3 N

A too thin steel is incapable of focus the entire magnetic field, which weakens actual performance of the magnet. If you install a neodymium to a weak sheet, the magnetism will pass right through and the holding will be smaller. To achieve the maximum of this neodymium's potential, you require a sufficiently solid backing of metal. The saturation phenomenon means that on sheet metal structures (e.g., car bodies), the magnet works worse. We recommend selecting the steel dimension according to the table below.

Table 5: Thermal stability (material behavior) - thermal limit
MW 40x15 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	42.64 kg / 94.00 LBS 42640.0 g / 418.3 N	OK
40 °C	-2.2%	41.70 kg / 91.94 LBS 41701.9 g / 409.1 N	OK
60 °C	-4.4%	40.76 kg / 89.87 LBS 40763.8 g / 399.9 N
80 °C	-6.6%	39.83 kg / 87.80 LBS 39825.8 g / 390.7 N
100 °C	-28.8%	30.36 kg / 66.93 LBS 30359.7 g / 297.8 N

Classic neodymiums lose parameters after exceeding the maximum temperature. Watch out for overheating – heat can permanently demagnetize this product. With increasing heat, the magnet's power temporarily decreases. Do not use this magnet near heat sources higher than its working range. Too high temperature will lead to irreversible degradation of magnetic properties.

*Important note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (pancake types) are more susceptible to demagnetization under lower heat stress than taller cylinders. Red status in the table points to permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 40x15 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	107.12 kg / 236.16 LBS 5 156 Gs	16.07 kg / 35.42 LBS 16068 g / 157.6 N	N/A
1 mm	102.82 kg / 226.67 LBS 7 286 Gs	15.42 kg / 34.00 LBS 15422 g / 151.3 N	92.53 kg / 204.00 LBS ~0 Gs
2 mm	98.38 kg / 216.89 LBS 7 127 Gs	14.76 kg / 32.53 LBS 14757 g / 144.8 N	88.54 kg / 195.20 LBS ~0 Gs
3 mm	93.92 kg / 207.06 LBS 6 964 Gs	14.09 kg / 31.06 LBS 14088 g / 138.2 N	84.53 kg / 186.36 LBS ~0 Gs
5 mm	85.07 kg / 187.55 LBS 6 627 Gs	12.76 kg / 28.13 LBS 12760 g / 125.2 N	76.56 kg / 168.79 LBS ~0 Gs
10 mm	64.27 kg / 141.70 LBS 5 761 Gs	9.64 kg / 21.25 LBS 9641 g / 94.6 N	57.85 kg / 127.53 LBS ~0 Gs
20 mm	33.15 kg / 73.09 LBS 4 137 Gs	4.97 kg / 10.96 LBS 4973 g / 48.8 N	29.84 kg / 65.78 LBS ~0 Gs
50 mm	3.84 kg / 8.47 LBS 1 408 Gs	0.58 kg / 1.27 LBS 576 g / 5.7 N	3.46 kg / 7.62 LBS ~0 Gs
60 mm	1.99 kg / 4.39 LBS 1 014 Gs	0.30 kg / 0.66 LBS 299 g / 2.9 N	1.79 kg / 3.95 LBS ~0 Gs
70 mm	1.08 kg / 2.38 LBS 747 Gs	0.16 kg / 0.36 LBS 162 g / 1.6 N	0.97 kg / 2.14 LBS ~0 Gs
80 mm	0.61 kg / 1.35 LBS 563 Gs	0.09 kg / 0.20 LBS 92 g / 0.9 N	0.55 kg / 1.22 LBS ~0 Gs
90 mm	0.36 kg / 0.80 LBS 432 Gs	0.05 kg / 0.12 LBS 54 g / 0.5 N	0.33 kg / 0.72 LBS ~0 Gs
100 mm	0.22 kg / 0.49 LBS 339 Gs	0.03 kg / 0.07 LBS 33 g / 0.3 N	0.20 kg / 0.44 LBS ~0 Gs

Two magnets interact from a significantly greater distance than a magnet and steel combination. Such a system of two magnets generates a stronger field and a further horizon of operation. Want to build a strong closure? Apply two magnets instead of a neodymium and a steel. Remember that when attracting two neodymiums, the pinch force is huge. The repulsion force is marginally weaker than the connection force, but still impressive.
*Flux density between like poles drops to ~0 Gs in the exact middle of the gap (resulting from vector opposition).
Attention: Results apply to shear force of dual identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - precautionary measures
MW 40x15 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	19.0 cm
Hearing aid	10 Gs (1.0 mT)	15.0 cm
Timepiece	20 Gs (2.0 mT)	11.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	9.0 cm
Car key	50 Gs (5.0 mT)	8.5 cm
Payment card	400 Gs (40.0 mT)	3.5 cm
HDD hard drive	600 Gs (60.0 mT)	3.0 cm

Extremely neodym field poses a serious hazard to IT equipment as well as medical implants. These neodymiums generate a field that prevents correct functioning of digital equipment. Be aware: the unseen radiation acts through matter and glass. Special caution must be exercised by people with cochlear implants and insulin pumps. Also at risk are: mechanical watches, remotes, speakers, and screens. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - collision effects
MW 40x15 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	20.63 km/h (5.73 m/s)	2.32 J
30 mm	30.69 km/h (8.52 m/s)	5.14 J
50 mm	39.22 km/h (10.89 m/s)	8.39 J
100 mm	55.39 km/h (15.39 m/s)	16.73 J

Magnetic elements are prone to chipping – a strong collision with metal causes immediate chipping. Watch the impact speed – a neodymium left loose becomes dangerous. Impact energy can cause material chips or dangerous crushing to fingers. Hold the magnet firmly during mounting so it doesn't hit violently against the metal. A collision at high speed means shattering of the magnet. Wear safety glasses when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 40x15 / 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)

The following table defines the conditions under which this product can be safely used. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (Flux)
MW 40x15 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	48 650 Mx	486.5 µWb
P_c Coefficient	0.48	Low (Flat)

Flux value emitted by the magnet pole. Key data in coil applications as well as sensors. P_c value defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 40x15 / N38

Environment	Effective steel pull	Effect
Air (land)	42.64 kg	Standard
Water (riverbed)	48.82 kg (+6.18 kg buoyancy gain)	+14.5%

Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Shear force

*Warning: On a vertical wall, the magnet retains only ~20% of its nominal pull.

2. Efficiency vs thickness

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

3. Thermal stability

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.48

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 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: 010067-2026

Measurement Calculator

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This product is a very strong cylindrical magnet, manufactured from modern NdFeB material, which, with dimensions of Ø40x15 mm, guarantees optimal power. This specific item boasts an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 42.64 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 418.33 N with a weight of only 141.37 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.

Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this professional 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 N38 are strong enough for the majority of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø40x15), 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 Ø40x15 mm, which, at a weight of 141.37 g, makes it an element with high magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 42.64 kg (force ~418.33 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against 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.

Pros and cons of rare earth magnets.

Pros

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

Their magnetic field remains stable, and after approximately ten years it decreases only by ~1% (according to research),
They retain their magnetic properties even under external field action,
Thanks to the reflective finish, the layer of Ni-Cu-Ni, gold-plated, or silver gives an clean appearance,
Magnets are characterized by impressive magnetic induction on the active area,
Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
Due to the option of precise molding and customization to individualized requirements, magnetic components can be produced in a wide range of geometric configurations, which increases their versatility,
Wide application in future technologies – they find application in hard drives, motor assemblies, diagnostic systems, as well as technologically advanced constructions.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons

Problematic aspects of neodymium magnets: tips and applications.

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a steel housing, which not only protects them against impacts but also increases their durability
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
We recommend a housing - magnetic mount, due to difficulties in realizing nuts inside the magnet and complicated shapes.
Potential hazard resulting from small fragments of magnets can be dangerous, in case of ingestion, which becomes key in the context of child safety. It is also worth noting that small components of these products are able to disrupt the diagnostic process medical after entering the body.
With large orders the cost of neodymium magnets is a challenge,

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what contributes to it?

Breakaway force was defined for the most favorable conditions, assuming:

using a plate made of mild steel, serving as a magnetic yoke
whose transverse dimension is min. 10 mm
characterized by lack of roughness
under conditions of gap-free contact (metal-to-metal)
during detachment in a direction perpendicular to the plane
at temperature approx. 20 degrees Celsius

Practical aspects of lifting capacity – factors

Bear in mind that the working load will differ influenced by elements below, starting with the most relevant:

Gap between magnet and steel – every millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
Angle of force application – maximum parameter is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is standardly many times smaller (approx. 1/5 of the lifting capacity).
Plate thickness – insufficiently thick sheet does not accept the full field, causing part of the power to be escaped to the other side.
Metal type – different alloys attracts identically. High carbon content worsen the attraction effect.
Surface condition – smooth surfaces guarantee perfect abutment, which increases force. Rough surfaces reduce efficiency.
Heat – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.

Warnings

Handling guide

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

Hand protection

Watch your fingers. Two powerful magnets will snap together immediately with a force of massive weight, destroying anything in their path. Exercise extreme caution!

Precision electronics

Navigation devices and mobile phones are highly susceptible to magnetism. Close proximity with a strong magnet can ruin the sensors in your phone.

Do not overheat magnets

Regular neodymium magnets (grade N) lose power when the temperature exceeds 80°C. This process is irreversible.

Nickel allergy

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If an allergic reaction occurs, immediately stop handling magnets and use protective gear.

Risk of cracking

Protect your eyes. Magnets can explode upon violent connection, launching shards into the air. Eye protection is mandatory.

Medical interference

Warning for patients: Strong magnetic fields disrupt medical devices. Keep at least 30 cm distance or ask another person to handle the magnets.

Keep away from children

Adult use only. Small elements can be swallowed, causing serious injuries. Store out of reach of kids and pets.

Combustion hazard

Combustion risk: Rare earth powder is explosive. Avoid machining magnets without safety gear as this may cause fire.

Electronic devices

Device Safety: Strong magnets can damage data carriers and delicate electronics (pacemakers, hearing aids, mechanical watches).

Caution! More info about risks in the article: Safety of working with magnets.

MW 40x15 / N38 - cylindrical magnet

Technical details - MW 40x15 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the assembly - report

Table 1: Static force (force vs distance) - characteristics MW 40x15 / N38

Table 2: Shear hold (wall) MW 40x15 / N38

Table 3: Wall mounting (sliding) - vertical pull MW 40x15 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MW 40x15 / N38

Table 5: Thermal stability (material behavior) - thermal limit MW 40x15 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MW 40x15 / N38

Table 7: Hazards (electronics) - precautionary measures MW 40x15 / N38

Table 8: Dynamics (cracking risk) - collision effects MW 40x15 / N38

Table 9: Anti-corrosion coating durability MW 40x15 / N38

Table 10: Construction data (Flux) MW 40x15 / N38

Table 11: Underwater work (magnet fishing) MW 40x15 / N38

1. Shear force

2. Efficiency vs thickness

3. Thermal stability

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

Material specification

Sustainability

Pulling force

Field Strength

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Pros and cons of rare earth magnets.

Pros

Cons

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what contributes to it?

Practical aspects of lifting capacity – factors

Warnings

Handling guide

Hand protection

Precision electronics

Do not overheat magnets

Nickel allergy

Risk of cracking

Medical interference

Keep away from children

Combustion hazard

Electronic devices

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - characteristics
MW 40x15 / N38

Table 2: Shear hold (wall)
MW 40x15 / N38

Table 3: Wall mounting (sliding) - vertical pull
MW 40x15 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MW 40x15 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MW 40x15 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 40x15 / N38

Table 7: Hazards (electronics) - precautionary measures
MW 40x15 / N38

Table 8: Dynamics (cracking risk) - collision effects
MW 40x15 / N38

Table 9: Anti-corrosion coating durability
MW 40x15 / N38

Table 10: Construction data (Flux)
MW 40x15 / N38

Table 11: Underwater work (magnet fishing)
MW 40x15 / N38