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MW 70x40 / 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 010097

GTIN/EAN: 5906301810964

5.00

Diameter Ø

70 mm [±0,1 mm]

Height

40 mm [±0,1 mm]

Weight

1154.54 g

Magnetization Direction

↑ axial

Load capacity

164.24 kg / 1611.16 N

Magnetic Induction

466.52 mT / 4665 Gs

Coating

[NiCuNi] Nickel

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395.40 ZŁ with VAT / pcs + price for transport

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Technical - MW 70x40 / N38 - cylindrical magnet

Specification / characteristics - MW 70x40 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010097
GTIN/EAN	5906301810964
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	70 mm [±0,1 mm]
Height	40 mm [±0,1 mm]
Weight	1154.54 g
Magnetization Direction	↑ axial
Load capacity ~ ?	164.24 kg / 1611.16 N
Magnetic Induction ~ ?	466.52 mT / 4665 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 70x40 / 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 simulation of the product - technical parameters

The following data constitute the direct effect of a physical simulation. Results are based on models for the material Nd₂Fe₁₄B. Operational conditions might slightly differ. Please consider these data as a reference point for designers.

Table 1: Static pull force (force vs distance) - power drop
MW 70x40 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4665 Gs 466.5 mT	164.24 kg / 362.09 pounds 164240.0 g / 1611.2 N	dangerous!
1 mm	4538 Gs 453.8 mT	155.47 kg / 342.75 pounds 155467.9 g / 1525.1 N	dangerous!
2 mm	4409 Gs 440.9 mT	146.74 kg / 323.52 pounds 146744.5 g / 1439.6 N	dangerous!
3 mm	4279 Gs 427.9 mT	138.20 kg / 304.68 pounds 138201.8 g / 1355.8 N	dangerous!
5 mm	4017 Gs 401.7 mT	121.81 kg / 268.54 pounds 121806.5 g / 1194.9 N	dangerous!
10 mm	3376 Gs 337.6 mT	86.03 kg / 189.65 pounds 86025.3 g / 843.9 N	dangerous!
15 mm	2788 Gs 278.8 mT	58.69 kg / 129.38 pounds 58686.8 g / 575.7 N	dangerous!
20 mm	2279 Gs 227.9 mT	39.22 kg / 86.46 pounds 39215.6 g / 384.7 N	dangerous!
30 mm	1511 Gs 151.1 mT	17.22 kg / 37.97 pounds 17222.5 g / 169.0 N	dangerous!
50 mm	699 Gs 69.9 mT	3.69 kg / 8.13 pounds 3690.0 g / 36.2 N	medium risk

Grip strength decreases drastically with every mm of gap. Keep in mind that every additional insulation layer (e.g., dirt, varnish, dust) noticeably weakens the grip. Magnetic products work most effectively during direct contact; distance weakens the power. See how quickly the pull force drop, when the product does not touch tightly to the steel surface. When designing the mounting, discard unnecessary gaps.

Table 2: Shear hold (wall)
MW 70x40 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	32.85 kg / 72.42 pounds 32848.0 g / 322.2 N
1 mm	Stal (~0.2)	31.09 kg / 68.55 pounds 31094.0 g / 305.0 N
2 mm	Stal (~0.2)	29.35 kg / 64.70 pounds 29348.0 g / 287.9 N
3 mm	Stal (~0.2)	27.64 kg / 60.94 pounds 27640.0 g / 271.1 N
5 mm	Stal (~0.2)	24.36 kg / 53.71 pounds 24362.0 g / 239.0 N
10 mm	Stal (~0.2)	17.21 kg / 37.93 pounds 17206.0 g / 168.8 N
15 mm	Stal (~0.2)	11.74 kg / 25.88 pounds 11738.0 g / 115.1 N
20 mm	Stal (~0.2)	7.84 kg / 17.29 pounds 7844.0 g / 76.9 N
30 mm	Stal (~0.2)	3.44 kg / 7.59 pounds 3444.0 g / 33.8 N
50 mm	Stal (~0.2)	0.74 kg / 1.63 pounds 738.0 g / 7.2 N

The following data defines the theoretical shear load required to initiate the shifting of the magnet downwards along a vertical metal surface (considering typical friction coefficient). This parameter is relative to the distance between the magnet and the surface.

Table 3: Wall mounting (shearing) - vertical pull
MW 70x40 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	49.27 kg / 108.63 pounds 49272.0 g / 483.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	32.85 kg / 72.42 pounds 32848.0 g / 322.2 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	16.42 kg / 36.21 pounds 16424.0 g / 161.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	82.12 kg / 181.04 pounds 82120.0 g / 805.6 N

When mounting a element on a upright wall (e.g., a board), it will only hold only approx. 1/5 of nominal attraction strength. Gravity and a low friction coefficient cause that holders slip easier than they detach. Designing a vertical fastening? Remember that the sliding force is noticeably lower than the maximum static pull force. On a smooth steel, the magnet will slide down under a much lighter load. Application of an anti-slip coating can drastically raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 70x40 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	5.47 kg / 12.07 pounds 5474.7 g / 53.7 N
1 mm	8%	13.69 kg / 30.17 pounds 13686.7 g / 134.3 N
2 mm	17%	27.37 kg / 60.35 pounds 27373.3 g / 268.5 N
3 mm	25%	41.06 kg / 90.52 pounds 41060.0 g / 402.8 N
5 mm	42%	68.43 kg / 150.87 pounds 68433.3 g / 671.3 N
10 mm	83%	136.87 kg / 301.74 pounds 136866.7 g / 1342.7 N
11 mm	92%	150.55 kg / 331.91 pounds 150553.3 g / 1476.9 N
12 mm	100%	164.24 kg / 362.09 pounds 164240.0 g / 1611.2 N

A too thin steel is incapable of absorb the entire magnetic field, which wastes potential of the holder. If you attach a powerful product to a thin surface, the magnetism will penetrate right through and the pull force will drop sharply. To utilize 100% of this magnet's power, you require a sufficiently solid piece of steel. The saturation phenomenon causes that on sheet metal structures (e.g., appliance housings), the holder works worse. We suggest choosing the steel thickness according to the table below.

Table 5: Thermal resistance (material behavior) - resistance threshold
MW 70x40 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	164.24 kg / 362.09 pounds 164240.0 g / 1611.2 N	OK
40 °C	-2.2%	160.63 kg / 354.12 pounds 160626.7 g / 1575.7 N	OK
60 °C	-4.4%	157.01 kg / 346.15 pounds 157013.4 g / 1540.3 N	OK
80 °C	-6.6%	153.40 kg / 338.19 pounds 153400.2 g / 1504.9 N
100 °C	-28.8%	116.94 kg / 257.81 pounds 116938.9 g / 1147.2 N

Ordinary NdFeB products lose parameters past the thermal threshold. Protect against heat – excessive heat can permanently demagnetize this product. With increasing heat, the magnet's power briefly decreases. Do not use this magnet close to heaters exceeding its safe range. Ignoring the limit will lead to permanent loss of magnetic properties.

*Technical advisory: Heat tolerance is determined by both grade, as well as the dimension ratios. Low-profile magnets (pancake types) risk losing magnetic properties at lower temperatures than taller cylinders. Red status in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field collision
MW 70x40 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	516.26 kg / 1138.16 pounds 5 679 Gs	77.44 kg / 170.72 pounds 77439 g / 759.7 N	N/A
1 mm	502.57 kg / 1107.98 pounds 9 205 Gs	75.39 kg / 166.20 pounds 75385 g / 739.5 N	452.31 kg / 997.18 pounds ~0 Gs
2 mm	488.69 kg / 1077.37 pounds 9 077 Gs	73.30 kg / 161.61 pounds 73303 g / 719.1 N	439.82 kg / 969.63 pounds ~0 Gs
3 mm	474.91 kg / 1047.01 pounds 8 948 Gs	71.24 kg / 157.05 pounds 71237 g / 698.8 N	427.42 kg / 942.31 pounds ~0 Gs
5 mm	447.76 kg / 987.15 pounds 8 688 Gs	67.16 kg / 148.07 pounds 67164 g / 658.9 N	402.99 kg / 888.43 pounds ~0 Gs
10 mm	382.88 kg / 844.10 pounds 8 034 Gs	57.43 kg / 126.62 pounds 57432 g / 563.4 N	344.59 kg / 759.69 pounds ~0 Gs
20 mm	270.41 kg / 596.14 pounds 6 752 Gs	40.56 kg / 89.42 pounds 40561 g / 397.9 N	243.37 kg / 536.53 pounds ~0 Gs
50 mm	81.66 kg / 180.03 pounds 3 710 Gs	12.25 kg / 27.01 pounds 12249 g / 120.2 N	73.50 kg / 162.03 pounds ~0 Gs
60 mm	54.14 kg / 119.35 pounds 3 021 Gs	8.12 kg / 17.90 pounds 8120 g / 79.7 N	48.72 kg / 107.41 pounds ~0 Gs
70 mm	36.14 kg / 79.69 pounds 2 469 Gs	5.42 kg / 11.95 pounds 5422 g / 53.2 N	32.53 kg / 71.72 pounds ~0 Gs
80 mm	24.40 kg / 53.80 pounds 2 028 Gs	3.66 kg / 8.07 pounds 3661 g / 35.9 N	21.96 kg / 48.42 pounds ~0 Gs
90 mm	16.70 kg / 36.82 pounds 1 678 Gs	2.51 kg / 5.52 pounds 2505 g / 24.6 N	15.03 kg / 33.14 pounds ~0 Gs
100 mm	11.60 kg / 25.57 pounds 1 398 Gs	1.74 kg / 3.84 pounds 1740 g / 17.1 N	10.44 kg / 23.01 pounds ~0 Gs

Two magnets attract each other from a much further distance than a neodymium and metal combination. The setup of magnet-to-magnet generates a stronger field and a wider radius of performance. Designing a powerful holder? Use a pair of magnets instead of one magnet and a striker plate. Exercise caution that when attracting two neodymiums, the pinch force is huge. The levitation is slightly lower than the connection force, but still significant.
*The magnetic induction in repulsion mode is approximately ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).
Attention: Estimates refer to shear force of a pair of matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (electronics) - warnings
MW 70x40 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	37.5 cm
Hearing aid	10 Gs (1.0 mT)	29.5 cm
Timepiece	20 Gs (2.0 mT)	23.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	17.5 cm
Car key	50 Gs (5.0 mT)	16.5 cm
Payment card	400 Gs (40.0 mT)	7.0 cm
HDD hard drive	600 Gs (60.0 mT)	5.5 cm

Extremely neodym field poses a large risk to electronic devices as well as medical implants. These NdFeB products produce a flux that disrupts operation of sensitive medical devices. Remember: the invisible magnetic field penetrates the body and plastic. Exceptional care must be taken by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, car keys, speakers, and screens. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - collision effects
MW 70x40 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	15.47 km/h (4.30 m/s)	10.66 J
30 mm	22.16 km/h (6.15 m/s)	21.87 J
50 mm	27.27 km/h (7.58 m/s)	33.13 J
100 mm	38.07 km/h (10.57 m/s)	64.55 J

Neodymium magnets are very brittle – a strong collision with metal causes immediate chipping. Watch the impact speed – a magnet released freely turns into a projectile. Striking energy can destroy the magnet 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 means shattering of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 70x40 / 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 (P_c)
MW 70x40 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	180 982 Mx	1809.8 µWb
P_c Coefficient	0.64	High (Stable)

Flux value emitted by the magnet pole. Key data for generator designers and motors. The P_c coefficient determines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 70x40 / N38

Environment	Effective steel pull	Effect
Air (land)	164.24 kg	Standard
Water (riverbed)	188.05 kg (+23.81 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. Wall mount (shear)

*Caution: On a vertical surface, the magnet retains just ~20% of its perpendicular strength.

2. Steel saturation

*Thin metal sheet (e.g. computer case) significantly weakens the holding force.

3. Thermal stability

*For N38 grade, 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) = 0.64

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.

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: 010097-2026

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This product is an extremely powerful cylinder magnet, manufactured from durable NdFeB material, which, with dimensions of Ø70x40 mm, guarantees maximum efficiency. This specific item boasts an accuracy 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. 164.24 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

This model is ideal for building electric motors, advanced Hall effect sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 1611.16 N with a weight of only 1154.54 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.

Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure stability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Magnets NdFeB grade N38 are suitable for 90% of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø70x40), 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 Ø70x40 mm, which, at a weight of 1154.54 g, makes it an element with high magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 164.24 kg (force ~1611.16 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 oxidation, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 40 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 diametrically if your project requires it.

Advantages and disadvantages of neodymium magnets.

Pros

In addition to their long-term stability, neodymium magnets provide the following advantages:

Their power is durable, and after around ten years it drops only by ~1% (theoretically),
Magnets very well protect themselves against loss of magnetization caused by external fields,
The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to look better,
Magnets are distinguished by exceptionally strong magnetic induction on the outer layer,
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...
Thanks to freedom in constructing and the capacity to customize to unusual requirements,
Wide application in innovative solutions – they find application in HDD drives, drive modules, diagnostic systems, also technologically advanced constructions.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Disadvantages of NdFeB magnets:

They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
Due to limitations in realizing threads and complicated shapes in magnets, we recommend using cover - magnetic holder.
Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these devices are able to complicate diagnosis medical after entering the body.
Due to complex production process, their price exceeds standard values,

Holding force characteristics

Detachment force of the magnet in optimal conditions – what it depends on?

The lifting capacity listed is a result of laboratory testing performed under standard conditions:

with the contact of a sheet made of low-carbon steel, guaranteeing maximum field concentration
with a thickness no less than 10 mm
characterized by even structure
with total lack of distance (without coatings)
for force acting at a right angle (in the magnet axis)
at ambient temperature room level

Determinants of lifting force in real conditions

Real force impacted by specific conditions, including (from most important):

Distance – the presence of foreign body (rust, tape, gap) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
Load vector – highest force is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the surface is usually several times smaller (approx. 1/5 of the lifting capacity).
Plate thickness – too thin steel does not close the flux, causing part of the power to be escaped into the air.
Steel grade – ideal substrate is pure iron steel. Hardened steels may attract less.
Surface finish – full contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Thermal factor – high temperature reduces pulling force. Too high temperature can permanently damage the magnet.

Lifting capacity testing was performed on a smooth plate of suitable thickness, under perpendicular forces, in contrast under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate reduces the load capacity.

Safety rules for work with neodymium magnets

Respect the power

Exercise caution. Neodymium magnets act from a long distance and snap with massive power, often quicker than you can move away.

Magnet fragility

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.

Cards and drives

Avoid bringing magnets near a purse, computer, or TV. The magnetism can destroy these devices and erase data from cards.

Combustion hazard

Fire warning: Neodymium dust is explosive. Do not process magnets without safety gear as this may cause fire.

Swallowing risk

Neodymium magnets are not suitable for play. Accidental ingestion of multiple magnets may result in them pinching intestinal walls, which constitutes a critical condition and necessitates immediate surgery.

Heat warning

Regular neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. Damage is permanent.

GPS Danger

A strong magnetic field disrupts the operation of compasses in smartphones and GPS navigation. Maintain magnets near a smartphone to prevent damaging the sensors.

Serious injuries

Danger of trauma: The attraction force is so great that it can result in hematomas, pinching, and even bone fractures. Protective gloves are recommended.

ICD Warning

For implant holders: Powerful magnets affect electronics. Keep minimum 30 cm distance or request help to handle the magnets.

Nickel allergy

A percentage of the population experience a contact allergy to nickel, which is the standard coating for neodymium magnets. Extended handling might lead to skin redness. We strongly advise wear protective gloves.

Security! More info about hazards in the article: Magnet Safety Guide.

MW 70x40 / N38 - cylindrical magnet

Technical - MW 70x40 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the product - technical parameters

Table 1: Static pull force (force vs distance) - power drop MW 70x40 / N38

Table 2: Shear hold (wall) MW 70x40 / N38

Table 3: Wall mounting (shearing) - vertical pull MW 70x40 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MW 70x40 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold MW 70x40 / N38

Table 6: Two magnets (attraction) - field collision MW 70x40 / N38

Table 7: Safety (HSE) (electronics) - warnings MW 70x40 / N38

Table 8: Dynamics (cracking risk) - collision effects MW 70x40 / N38

Table 9: Anti-corrosion coating durability MW 70x40 / N38

Table 10: Electrical data (Pc) MW 70x40 / N38

Table 11: Hydrostatics and buoyancy MW 70x40 / N38

1. Wall mount (shear)

2. Steel saturation

3. Thermal stability

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

Material specification

Sustainability

Pulling force

Field Strength

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WM 34.5x24.3x17 / N38 - magnetic hanger

Advantages and disadvantages of neodymium magnets.

Pros

Disadvantages

Holding force characteristics

Detachment force of the magnet in optimal conditions – what it depends on?

Determinants of lifting force in real conditions

Safety rules for work with neodymium magnets

Respect the power

Magnet fragility

Cards and drives

Combustion hazard

Swallowing risk

Heat warning

GPS Danger

Serious injuries

ICD Warning

Nickel allergy

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - power drop
MW 70x40 / N38

Table 2: Shear hold (wall)
MW 70x40 / N38

Table 3: Wall mounting (shearing) - vertical pull
MW 70x40 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MW 70x40 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold
MW 70x40 / N38

Table 6: Two magnets (attraction) - field collision
MW 70x40 / N38

Table 7: Safety (HSE) (electronics) - warnings
MW 70x40 / N38

Table 8: Dynamics (cracking risk) - collision effects
MW 70x40 / N38

Table 9: Anti-corrosion coating durability
MW 70x40 / N38

Table 10: Electrical data (P_c)
MW 70x40 / N38

Table 11: Hydrostatics and buoyancy
MW 70x40 / N38