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MW 70x20 / 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 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 / 979.00 N

Magnetic Induction

307.57 mT / 3076 Gs

Coating

[NiCuNi] Nickel

technical parameters »

239.85 ZŁ with VAT / pcs + price for transport

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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 details - 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 / 979.00 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 modeling of the product - report

These data constitute the outcome of a physical analysis. Values are based on models for the class Nd₂Fe₁₄B. Actual performance might slightly differ. Treat these data as a preliminary roadmap for designers.

Table 1: Static pull force (force vs gap) - power drop
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 pounds 99830.0 g / 979.3 N	critical level
1 mm	3013 Gs 301.3 mT	95.80 kg / 211.21 pounds 95804.4 g / 939.8 N	critical level
2 mm	2946 Gs 294.6 mT	91.59 kg / 201.92 pounds 91587.7 g / 898.5 N	critical level
3 mm	2875 Gs 287.5 mT	87.27 kg / 192.39 pounds 87266.0 g / 856.1 N	critical level
5 mm	2727 Gs 272.7 mT	78.48 kg / 173.02 pounds 78482.2 g / 769.9 N	critical level
10 mm	2332 Gs 233.2 mT	57.38 kg / 126.50 pounds 57380.6 g / 562.9 N	critical level
15 mm	1942 Gs 194.2 mT	39.80 kg / 87.73 pounds 39795.7 g / 390.4 N	critical level
20 mm	1590 Gs 159.0 mT	26.68 kg / 58.82 pounds 26680.3 g / 261.7 N	critical level
30 mm	1044 Gs 104.4 mT	11.51 kg / 25.38 pounds 11511.2 g / 112.9 N	critical level
50 mm	466 Gs 46.6 mT	2.29 kg / 5.06 pounds 2294.1 g / 22.5 N	medium risk

Pulling power decreases sharply with every mm of spacing. Remember that every additional insulation layer (e.g., dirt, paint, rust) strongly reduces the pull force. Neodymiums operate optimally at the point of direct contact; gap kills the force. Observe how rapidly the load capacity plummet, when the product does not adhere flatly to the steel surface. When calculating the assembly, avoid redundant distances.

Table 2: Slippage hold (vertical surface)
MW 70x20 / N38

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

The following data indicates the approximate weight limit required to cause the shifting of the magnet down on a upright metal surface (assuming typical friction coefficient). The holding force depends on 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 pounds 29949.0 g / 293.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	19.97 kg / 44.02 pounds 19966.0 g / 195.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	9.98 kg / 22.01 pounds 9983.0 g / 97.9 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	49.92 kg / 110.04 pounds 49915.0 g / 489.7 N

When mounting a holder on a vertical surface (e.g., a board), it will only hold only about 20%-30% of its maximum pull force. Gravity and a weak degree of grip cause that holders slip easier than they pop off the substrate. Planning a hanger? Consider that the sliding force is noticeably lower than the maximum static pull force. On a painted metal, the element will slide down under a noticeably lighter weight. Application of an anti-slip pad can effectively raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 70x20 / N38

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

A thin sheet is incapable of take in the full magnetic flux, which wastes potential of the magnet. Should you attach a powerful product to a thin surface, the magnetism will pass right through and the holding will be smaller. To achieve 100% of this neodymium's potential, you need a suitably thick element of steel. The saturation effect causes that on thin elements (e.g., thin profiles), the product works worse. We suggest choosing the steel dimension based on the following data.

Table 5: Thermal resistance (stability) - power drop
MW 70x20 / N38

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

Classic neodymiums irreversibly lose power past the thermal threshold. Watch out for overheating – excessive heat can irreversibly destroy this magnet. With increasing heat, the magnet's force briefly drops. Refrain from using this magnet close to heaters higher than its operating temperature limit. Ignoring the limit will lead to permanent loss of magnetic properties.

*Important note: Temperature resistance is determined by both grade, as well as the dimension ratios. Low-profile magnets (low permeance coefficient) may lose charge permanently at lower temperatures compared to rod magnets. Red status in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 70x20 / N38

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

Two magnetic products attract each other from a much further distance than a neodymium and metal setup. The setup of magnet-to-magnet produces a massive flux and a wider radius of operation. Planning to create a powerful holder? Apply two magnets instead of one magnet and a striker plate. Be careful that when attracting two neodymiums, the collision energy is extreme. The repulsion force is slightly lower than the connection force, but still large.
*Field value between like poles drops to ~0 Gs at the midpoint of the gap (resulting from vector opposition).
Important: Figures refer to sliding force of dual matching neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - 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
Mechanical watch	20 Gs (2.0 mT)	18.5 cm
Mobile device	40 Gs (4.0 mT)	14.5 cm
Remote	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

Extremely neodym field is a real danger to electronic devices and medical implants. These neodymiums generate a flux that disrupts operation of digital equipment. Be aware: the invisible magnetic field acts through matter and housings. Increased vigilance must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: automatic timepieces, remotes, speakers, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - 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 delicate – a violent impact against metal risks their cracking. Pay attention to connection velocity – a magnet released freely speeds with massive force. Kinetic force can destroy the magnet or dangerous crushing to skin. Be sure to control the product during bringing near metal so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Use safety goggles when playing with large magnets.

Table 9: Anti-corrosion coating durability
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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (P_c)
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 passing through the pole surface. Key data for generator designers and motors. The P_c coefficient determines the working geometry.

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%

Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

Contrary to myths, water does not block the magnetic field. However, remember the water resistance when pulling the rope quickly.

1. Shear force

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

2. Efficiency vs thickness

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

3. Temperature resistance

*For N38 material, 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

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Engineering data and GPSR

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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UMS 48x18x8.5x11.5 / N38 - conical magnetic holder

44.92 ZŁ brutto / pcs

This product is an exceptionally strong rod magnet, composed of modern NdFeB material, which, at dimensions of Ø70x20 mm, guarantees the highest energy density. This specific item boasts high dimensional repeatability and industrial build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 99.83 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

This model is perfect for building generators, advanced sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the high power of 979.00 N with a weight of only 577.27 g, this rod 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 stability in automation, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Magnets 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 even stronger 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 store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 70 mm and height 20 mm. The value of 979.00 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 secures it 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. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized diametrically if your project requires it.

Advantages and disadvantages of rare earth magnets.

Pros

Besides their exceptional magnetic power, neodymium magnets offer the following advantages:

They do not lose power, even over around 10 years – the decrease in strength is only ~1% (based on measurements),
Neodymium magnets prove to be remarkably resistant to magnetic field loss caused by magnetic disturbances,
The use of an metallic finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
Magnets are characterized by extremely high magnetic induction on the outer layer,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
Thanks to versatility in designing and the ability to customize to unusual requirements,
Universal use in electronics industry – they are used in computer drives, electric drive systems, precision medical tools, and technologically advanced constructions.
Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Cons

Characteristics of disadvantages of neodymium magnets and ways of using them

They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
Due to limitations in producing threads and complicated forms in magnets, we recommend using a housing - magnetic mechanism.
Health risk resulting from small fragments of magnets pose a threat, in case of ingestion, which gains importance in the context of child safety. Furthermore, small elements of these products can be problematic in diagnostics medical when they are in the body.
With mass production the cost of neodymium magnets can be a barrier,

Holding force characteristics

Best holding force of the magnet in ideal parameters – what contributes to it?

The lifting capacity listed is a theoretical maximum value executed under specific, ideal conditions:

with the use of a sheet made of low-carbon steel, guaranteeing maximum field concentration
with a thickness no less than 10 mm
with an ground contact surface
without the slightest insulating layer between the magnet and steel
during detachment in a direction vertical to the plane
in temp. approx. 20°C

What influences lifting capacity in practice

Holding efficiency is affected by working environment parameters, including (from priority):

Space between magnet and steel – every millimeter of distance (caused e.g. by varnish or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
Steel thickness – insufficiently thick sheet does not accept the full field, causing part of the flux to be lost to the other side.
Plate material – low-carbon steel attracts best. Alloy admixtures reduce magnetic permeability and lifting capacity.
Surface condition – ground elements ensure maximum contact, which improves force. Uneven metal weaken the grip.
Thermal conditions – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, however under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Moreover, even a small distance between the magnet and the plate lowers the holding force.

Safety rules for work with NdFeB magnets

Allergic reactions

Studies show that nickel (the usual finish) is a potent allergen. For allergy sufferers, refrain from touching magnets with bare hands or choose coated magnets.

Warning for heart patients

For implant holders: Strong magnetic fields disrupt medical devices. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Bodily injuries

Big blocks can crush fingers in a fraction of a second. Under no circumstances place your hand betwixt two attracting surfaces.

Keep away from children

Only for adults. Small elements pose a choking risk, leading to severe trauma. Store away from kids and pets.

Permanent damage

Keep cool. Neodymium magnets are sensitive to heat. If you need resistance above 80°C, look for HT versions (H, SH, UH).

Fire warning

Powder produced during cutting of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Keep away from computers

Do not bring magnets close to a wallet, laptop, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.

Precision electronics

Remember: neodymium magnets produce a field that confuses precision electronics. Maintain a safe distance from your mobile, device, and navigation systems.

Powerful field

Handle magnets consciously. Their powerful strength can shock even professionals. Stay alert and do not underestimate their power.

Material brittleness

Watch out for shards. Magnets can fracture upon violent connection, launching sharp fragments into the air. We recommend safety glasses.

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

MW 70x20 / N38 - cylindrical magnet

Technical details - MW 70x20 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the product - report

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

Table 2: Slippage hold (vertical surface) MW 70x20 / N38

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

Table 4: Steel thickness (substrate influence) - sheet metal selection MW 70x20 / N38

Table 5: Thermal resistance (stability) - power drop MW 70x20 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range MW 70x20 / N38

Table 7: Hazards (electronics) - warnings MW 70x20 / N38

Table 8: Dynamics (kinetic energy) - warning MW 70x20 / N38

Table 9: Anti-corrosion coating durability MW 70x20 / N38

Table 10: Electrical data (Pc) MW 70x20 / N38

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

1. Shear force

2. Efficiency vs thickness

3. Temperature resistance

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

Chemical composition

Environmental data

Magnet pull force

Magnetic Field

See also products

BM 750x180x70 [4x M8] - magnetic beam

SM 32x400 [2xM8] / N52 - magnetic separator

MP 12x8/4x3 / N38 - ring magnet

UMS 48x18x8.5x11.5 / N38 - conical magnetic holder

Advantages and disadvantages of rare earth magnets.

Pros

Cons

Holding force characteristics

Best holding force of the magnet in ideal parameters – what contributes to it?

What influences lifting capacity in practice

Safety rules for work with NdFeB magnets

Allergic reactions

Warning for heart patients

Bodily injuries

Keep away from children

Permanent damage

Fire warning

Keep away from computers

Precision electronics

Powerful field

Material brittleness

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Slippage hold (vertical surface)
MW 70x20 / N38

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

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 70x20 / N38

Table 5: Thermal resistance (stability) - power drop
MW 70x20 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 70x20 / N38

Table 7: Hazards (electronics) - warnings
MW 70x20 / N38

Table 8: Dynamics (kinetic energy) - warning
MW 70x20 / N38

Table 9: Anti-corrosion coating durability
MW 70x20 / N38

Table 10: Electrical data (P_c)
MW 70x20 / N38

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