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MW 70x20 / 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 010095

GTIN/EAN: 5906301810940

5.00

Diameter Ø

70 mm [±0,1 mm]

Height

20 mm [±0,1 mm]

Weight

577.27 g

Magnetization Direction

↑ axial

Load capacity

99.83 kg / 979.31 N

Magnetic Induction

307.57 mT / 3076 Gs

Coating

[NiCuNi] Nickel

technical specifications »

239.85 ZŁ with VAT / pcs + price for transport

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Product card - MW 70x20 / N38 - cylindrical magnet

Specification / characteristics - MW 70x20 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010095
GTIN/EAN	5906301810940
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	20 mm [±0,1 mm]
Weight	577.27 g
Magnetization Direction	↑ axial
Load capacity ~ ?	99.83 kg / 979.31 N
Magnetic Induction ~ ?	307.57 mT / 3076 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 70x20 / 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 analysis of the product - technical parameters

The following values represent the outcome of a mathematical analysis. Results rely on models for the material Nd₂Fe₁₄B. Actual conditions might slightly differ from theoretical values. Please consider these data as a supplementary guide when designing systems.

Table 1: Static pull force (force vs gap) - interaction chart
MW 70x20 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3075 Gs 307.5 mT	99.83 kg / 220.09 lbs 99830.0 g / 979.3 N	crushing
1 mm	3013 Gs 301.3 mT	95.80 kg / 211.21 lbs 95804.4 g / 939.8 N	crushing
2 mm	2946 Gs 294.6 mT	91.59 kg / 201.92 lbs 91587.7 g / 898.5 N	crushing
3 mm	2875 Gs 287.5 mT	87.27 kg / 192.39 lbs 87266.0 g / 856.1 N	crushing
5 mm	2727 Gs 272.7 mT	78.48 kg / 173.02 lbs 78482.2 g / 769.9 N	crushing
10 mm	2332 Gs 233.2 mT	57.38 kg / 126.50 lbs 57380.6 g / 562.9 N	crushing
15 mm	1942 Gs 194.2 mT	39.80 kg / 87.73 lbs 39795.7 g / 390.4 N	crushing
20 mm	1590 Gs 159.0 mT	26.68 kg / 58.82 lbs 26680.3 g / 261.7 N	crushing
30 mm	1044 Gs 104.4 mT	11.51 kg / 25.38 lbs 11511.2 g / 112.9 N	crushing
50 mm	466 Gs 46.6 mT	2.29 kg / 5.06 lbs 2294.1 g / 22.5 N	warning

Magnetic force decreases significantly with every subsequent millimeter of distance. Remember that even a very thin break (e.g., dirt, varnish, rust) noticeably reduces the pull force. Neodymiums operate optimally during direct contact; distance drastically cuts the force. See how flashily the parameters plummet, when the product does not touch directly to the metal substrate. When planning the arrangement, eliminate unnecessary gaps.

Table 2: Vertical capacity (wall)
MW 70x20 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	19.97 kg / 44.02 lbs 19966.0 g / 195.9 N
1 mm	Stal (~0.2)	19.16 kg / 42.24 lbs 19160.0 g / 188.0 N
2 mm	Stal (~0.2)	18.32 kg / 40.38 lbs 18318.0 g / 179.7 N
3 mm	Stal (~0.2)	17.45 kg / 38.48 lbs 17454.0 g / 171.2 N
5 mm	Stal (~0.2)	15.70 kg / 34.60 lbs 15696.0 g / 154.0 N
10 mm	Stal (~0.2)	11.48 kg / 25.30 lbs 11476.0 g / 112.6 N
15 mm	Stal (~0.2)	7.96 kg / 17.55 lbs 7960.0 g / 78.1 N
20 mm	Stal (~0.2)	5.34 kg / 11.76 lbs 5336.0 g / 52.3 N
30 mm	Stal (~0.2)	2.30 kg / 5.08 lbs 2302.0 g / 22.6 N
50 mm	Stal (~0.2)	0.46 kg / 1.01 lbs 458.0 g / 4.5 N

This section defines the approximate weight limit sufficient to initiate the sliding of the magnet downwards against a vertical steel wall (assuming typical friction coefficient). This value varies with the air gap between the magnet and the surface.

Table 3: Wall mounting (shearing) - vertical pull
MW 70x20 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	29.95 kg / 66.03 lbs 29949.0 g / 293.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	19.97 kg / 44.02 lbs 19966.0 g / 195.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	9.98 kg / 22.01 lbs 9983.0 g / 97.9 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	49.92 kg / 110.04 lbs 49915.0 g / 489.7 N

When mounting a holder on a upright plane (e.g., a fridge), it will only hold only approx. 1/5 of its nominal power. Gravitational force and a weak degree of grip mean that products move down easier than they pop off the substrate. Want to create a vertical fastening? Remember that the sliding force is significantly lower than the perpendicular breakaway force. On a slippery surface, the holder will slide down under a significantly smaller load. Using a rubber coating can effectively increase the grip.

Table 4: Steel thickness (substrate influence) - power losses
MW 70x20 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	3.33 kg / 7.34 lbs 3327.7 g / 32.6 N
1 mm	8%	8.32 kg / 18.34 lbs 8319.2 g / 81.6 N
2 mm	17%	16.64 kg / 36.68 lbs 16638.3 g / 163.2 N
3 mm	25%	24.96 kg / 55.02 lbs 24957.5 g / 244.8 N
5 mm	42%	41.60 kg / 91.70 lbs 41595.8 g / 408.1 N
10 mm	83%	83.19 kg / 183.41 lbs 83191.7 g / 816.1 N
11 mm	92%	91.51 kg / 201.75 lbs 91510.8 g / 897.7 N
12 mm	100%	99.83 kg / 220.09 lbs 99830.0 g / 979.3 N

A thin sheet is not enough to conduct the full magnetic flux, which squanders power of the magnet. Should you mount a strong magnet to a too thin substrate, the flux will penetrate right through and the pull force will drop sharply. To achieve full efficiency of this neodymium's power, you require a sufficiently solid element of metal. The saturation phenomenon causes that on thin elements (e.g., appliance housings), the product holds weaker. We suggest choosing the steel dimension according to the table below.

Table 5: Thermal resistance (material behavior) - thermal limit
MW 70x20 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	99.83 kg / 220.09 lbs 99830.0 g / 979.3 N	OK
40 °C	-2.2%	97.63 kg / 215.25 lbs 97633.7 g / 957.8 N	OK
60 °C	-4.4%	95.44 kg / 210.40 lbs 95437.5 g / 936.2 N
80 °C	-6.6%	93.24 kg / 205.56 lbs 93241.2 g / 914.7 N
100 °C	-28.8%	71.08 kg / 156.70 lbs 71079.0 g / 697.3 N

Standard neodymium magnets change their properties strength past the thermal threshold. Watch out for overheating – high temperature can irreversibly demagnetize this magnet. As the temperature rises, the neodymium's force temporarily drops. Refrain from using this product close to heaters higher than its safe range. Exceeding the critical threshold will cause irreversible degradation of magnetic properties.

*Technical advisory: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Low-profile magnets (pancake types) may lose charge permanently at lower temperatures compared to rod magnets. The danger warning in the table points to permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 70x20 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	224.41 kg / 494.73 lbs 4 665 Gs	33.66 kg / 74.21 lbs 33661 g / 330.2 N	N/A
1 mm	219.98 kg / 484.97 lbs 6 090 Gs	33.00 kg / 72.74 lbs 32997 g / 323.7 N	197.98 kg / 436.47 lbs ~0 Gs
2 mm	215.36 kg / 474.78 lbs 6 026 Gs	32.30 kg / 71.22 lbs 32304 g / 316.9 N	193.82 kg / 427.31 lbs ~0 Gs
3 mm	210.66 kg / 464.41 lbs 5 959 Gs	31.60 kg / 69.66 lbs 31598 g / 310.0 N	189.59 kg / 417.97 lbs ~0 Gs
5 mm	201.05 kg / 443.23 lbs 5 822 Gs	30.16 kg / 66.48 lbs 30157 g / 295.8 N	180.94 kg / 398.91 lbs ~0 Gs
10 mm	176.42 kg / 388.94 lbs 5 454 Gs	26.46 kg / 58.34 lbs 26463 g / 259.6 N	158.78 kg / 350.05 lbs ~0 Gs
20 mm	128.99 kg / 284.36 lbs 4 663 Gs	19.35 kg / 42.65 lbs 19348 g / 189.8 N	116.09 kg / 255.93 lbs ~0 Gs
50 mm	39.50 kg / 87.08 lbs 2 581 Gs	5.93 kg / 13.06 lbs 5925 g / 58.1 N	35.55 kg / 78.38 lbs ~0 Gs
60 mm	25.88 kg / 57.05 lbs 2 089 Gs	3.88 kg / 8.56 lbs 3881 g / 38.1 N	23.29 kg / 51.34 lbs ~0 Gs
70 mm	17.01 kg / 37.49 lbs 1 693 Gs	2.55 kg / 5.62 lbs 2551 g / 25.0 N	15.31 kg / 33.74 lbs ~0 Gs
80 mm	11.28 kg / 24.86 lbs 1 379 Gs	1.69 kg / 3.73 lbs 1692 g / 16.6 N	10.15 kg / 22.38 lbs ~0 Gs
90 mm	7.57 kg / 16.69 lbs 1 130 Gs	1.14 kg / 2.50 lbs 1136 g / 11.1 N	6.81 kg / 15.02 lbs ~0 Gs
100 mm	5.16 kg / 11.37 lbs 932 Gs	0.77 kg / 1.71 lbs 774 g / 7.6 N	4.64 kg / 10.23 lbs ~0 Gs

Two strong neodymiums attract each other from a wider radius than a magnet and sheet combination. The connection of magnet-to-magnet creates a more powerful interaction and a larger range of action. Designing a strong closure? Utilize two neodymiums instead of one magnet and a steel. Remember that when bringing together two magnets, the pinch force is extreme. The repulsion force is a bit weaker than the connection force, but still impressive.
*Flux density for N-N configuration is approximately ~0 Gs at the geometric center of the gap (resulting from vector opposition).
* Calculations refer to shear force of two matching magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (implants) - warnings
MW 70x20 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	30.5 cm
Hearing aid	10 Gs (1.0 mT)	24.0 cm
Timepiece	20 Gs (2.0 mT)	18.5 cm
Mobile device	40 Gs (4.0 mT)	14.5 cm
Car key	50 Gs (5.0 mT)	13.5 cm
Payment card	400 Gs (40.0 mT)	5.5 cm
HDD hard drive	600 Gs (60.0 mT)	4.5 cm

Powerful magnet radiation is a real danger to electronic devices as well as medical implants. These NdFeB products generate a flux that destroys function of sensitive medical devices. Remember: the invisible magnetic field penetrates the body and housings. Special caution must be exercised by people with hearing aids and insulin pumps. The risk also applies to: mechanical watches, remotes, speakers, and screens. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - warning
MW 70x20 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	17.39 km/h (4.83 m/s)	6.73 J
30 mm	24.57 km/h (6.83 m/s)	13.45 J
50 mm	30.08 km/h (8.36 m/s)	20.15 J
100 mm	41.97 km/h (11.66 m/s)	39.23 J

Magnetic elements are prone to chipping – a violent impact against metal can result in shattering. Pay attention to connection velocity – a magnet released freely becomes dangerous. Striking energy can trigger coating fragments or painful pinches to fingers. Hold the magnet firmly during installation so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear safety glasses when handling with large magnets.

Table 9: Corrosion resistance
MW 70x20 / 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (Flux)
MW 70x20 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	128 363 Mx	1283.6 µWb
P_c Coefficient	0.39	Low (Flat)

Total magnetic flux emitted by the magnet pole. Essential parameter when building generators and motors. P_c value defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 70x20 / N38

Environment	Effective steel pull	Effect
Air (land)	99.83 kg	Standard
Water (riverbed)	114.31 kg (+14.48 kg buoyancy gain)	+14.5%

Corrosion 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. Buoyancy helps in lifting finds.

1. Vertical hold

*Warning: On a vertical wall, the magnet holds just approx. 20-30% of its nominal pull.

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) drastically reduces the holding force.

3. Heat tolerance

*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) = 0.39

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

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%

Environmental data

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 010095-2026

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The offered product is a very strong rod magnet, manufactured from modern NdFeB material, which, at dimensions of Ø70x20 mm, guarantees maximum efficiency. This specific item is characterized by high dimensional repeatability and industrial build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 99.83 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Moreover, its triple-layer 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 magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 979.31 N with a weight of only 577.27 g, this cylindrical magnet is indispensable in electronics 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 immediate cracking of this precision component. To ensure long-term durability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.

Magnets NdFeB grade N38 are suitable for the majority of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø70x20), 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 Ø70x20 mm, which, at a weight of 577.27 g, makes it an element with high magnetic energy density. The value of 979.31 N means that the magnet is capable of holding a weight many times exceeding its own mass of 577.27 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, 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 70 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 and disadvantages of rare earth magnets.

Benefits

Besides their tremendous field intensity, neodymium magnets offer the following advantages:

They virtually do not lose power, because even after ten years the performance loss is only ~1% (according to literature),
Magnets perfectly resist against demagnetization caused by external fields,
The use of an refined layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
They show high magnetic induction at the operating surface, which improves attraction properties,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Thanks to the option of precise forming and customization to specialized projects, neodymium magnets can be created in a broad palette of geometric configurations, which increases their versatility,
Significant place in high-tech industry – they are commonly used in magnetic memories, electric drive systems, medical equipment, as well as complex engineering applications.
Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Cons

Disadvantages of NdFeB magnets:

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
Due to limitations in creating threads and complicated shapes in magnets, we recommend using a housing - magnetic mount.
Health risk resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small components of these products are able to be problematic in diagnostics medical in case of swallowing.
Due to neodymium price, their price exceeds standard values,

Holding force characteristics

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

The specified lifting capacity represents the maximum value, obtained under optimal environment, namely:

using a base made of low-carbon steel, functioning as a magnetic yoke
with a cross-section no less than 10 mm
characterized by smoothness
with direct contact (without paint)
under axial application of breakaway force (90-degree angle)
at temperature room level

Lifting capacity in real conditions – factors

It is worth knowing that the magnet holding may be lower depending on elements below, starting with the most relevant:

Gap (betwixt the magnet and the metal), because even a tiny distance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to varnish, rust or debris).
Force direction – declared lifting capacity refers to detachment vertically. When slipping, the magnet holds much less (typically approx. 20-30% of nominal force).
Steel thickness – too thin plate does not accept the full field, causing part of the flux to be escaped to the other side.
Chemical composition of the base – low-carbon steel attracts best. Alloy admixtures lower magnetic permeability and holding force.
Base smoothness – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Unevenness creates an air distance.
Thermal conditions – NdFeB sinters have a negative temperature coefficient. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, whereas under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a slight gap between the magnet’s surface and the plate lowers the holding force.

Warnings

Implant safety

People with a ICD should keep an large gap from magnets. The magnetism can disrupt the operation of the life-saving device.

Mechanical processing

Fire hazard: Neodymium dust is highly flammable. Do not process magnets without safety gear as this may cause fire.

Do not overheat magnets

Watch the temperature. Exposing the magnet above 80 degrees Celsius will ruin its magnetic structure and pulling force.

Electronic devices

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

Handling guide

Be careful. Neodymium magnets attract from a distance and snap with huge force, often faster than you can react.

Product not for children

Absolutely store magnets away from children. Choking hazard is high, and the consequences of magnets clamping inside the body are fatal.

Impact on smartphones

Note: rare earth magnets generate a field that disrupts sensitive sensors. Keep a safe distance from your phone, device, and GPS.

Bone fractures

Risk of injury: The pulling power is so immense that it can result in hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Magnets are brittle

Despite metallic appearance, the material is brittle and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Nickel coating and allergies

Some people experience a contact allergy to nickel, which is the typical protective layer for neodymium magnets. Extended handling can result in a rash. It is best to use safety gloves.

Danger! More info about hazards in the article: Safety of working with magnets.

MW 70x20 / N38 - cylindrical magnet

Product card - MW 70x20 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the product - technical parameters

Table 1: Static pull force (force vs gap) - interaction chart MW 70x20 / N38

Table 2: Vertical capacity (wall) MW 70x20 / N38

Table 3: Wall mounting (shearing) - vertical pull MW 70x20 / N38

Table 4: Steel thickness (substrate influence) - power losses MW 70x20 / N38

Table 5: Thermal resistance (material behavior) - thermal limit MW 70x20 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MW 70x20 / N38

Table 7: Protective zones (implants) - warnings MW 70x20 / N38

Table 8: Dynamics (cracking risk) - warning MW 70x20 / N38

Table 9: Corrosion resistance MW 70x20 / N38

Table 10: Construction data (Flux) MW 70x20 / N38

Table 11: Underwater work (magnet fishing) MW 70x20 / N38

1. Vertical hold

2. Plate thickness effect

3. Heat tolerance

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

Chemical composition

Environmental data

Pulling force

Field Strength

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Advantages and disadvantages of rare earth magnets.

Benefits

Cons

Holding force characteristics

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

Lifting capacity in real conditions – factors

Warnings

Implant safety

Mechanical processing

Do not overheat magnets

Electronic devices

Handling guide

Product not for children

Impact on smartphones

Bone fractures

Magnets are brittle

Nickel coating and allergies

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - interaction chart
MW 70x20 / N38

Table 2: Vertical capacity (wall)
MW 70x20 / N38

Table 3: Wall mounting (shearing) - vertical pull
MW 70x20 / N38

Table 4: Steel thickness (substrate influence) - power losses
MW 70x20 / N38

Table 5: Thermal resistance (material behavior) - thermal limit
MW 70x20 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 70x20 / N38

Table 7: Protective zones (implants) - warnings
MW 70x20 / N38

Table 8: Dynamics (cracking risk) - warning
MW 70x20 / N38

Table 9: Corrosion resistance
MW 70x20 / N38

Table 10: Construction data (Flux)
MW 70x20 / N38

Table 11: Underwater work (magnet fishing)
MW 70x20 / N38