Product available Ships today (order by 14:00)

MW 50x20 / 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 010080

GTIN/EAN: 5906301810797

Diameter Ø

50 mm [±0,1 mm]

Height

20 mm [±0,1 mm]

Weight

294.52 g

Magnetization Direction

↑ axial

Load capacity

70.10 kg / 687.66 N

Magnetic Induction

387.23 mT / 3872 Gs

Coating

[NiCuNi] Nickel

check technical data »

106.96 ZŁ with VAT / pcs + price for transport

86.96 ZŁ net + 23% VAT / pcs

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Physical properties - MW 50x20 / N38 - cylindrical magnet

Specification / characteristics - MW 50x20 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010080
GTIN/EAN	5906301810797
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	50 mm [±0,1 mm]
Height	20 mm [±0,1 mm]
Weight	294.52 g
Magnetization Direction	↑ axial
Load capacity ~ ?	70.10 kg / 687.66 N
Magnetic Induction ~ ?	387.23 mT / 3872 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 50x20 / 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

Engineering analysis of the assembly - report

The following values represent the direct effect of a mathematical analysis. Results are based on models for the material Nd₂Fe₁₄B. Real-world performance may deviate from the simulation results. Use these data as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs distance) - characteristics
MW 50x20 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3872 Gs 387.2 mT	70.10 kg / 154.54 LBS 70100.0 g / 687.7 N	dangerous!
1 mm	3740 Gs 374.0 mT	65.41 kg / 144.20 LBS 65408.0 g / 641.7 N	dangerous!
2 mm	3601 Gs 360.1 mT	60.65 kg / 133.72 LBS 60652.7 g / 595.0 N	dangerous!
3 mm	3459 Gs 345.9 mT	55.95 kg / 123.35 LBS 55950.5 g / 548.9 N	dangerous!
5 mm	3168 Gs 316.8 mT	46.94 kg / 103.47 LBS 46935.3 g / 460.4 N	dangerous!
10 mm	2460 Gs 246.0 mT	28.31 kg / 62.40 LBS 28306.3 g / 277.7 N	dangerous!
15 mm	1855 Gs 185.5 mT	16.10 kg / 35.48 LBS 16095.6 g / 157.9 N	dangerous!
20 mm	1384 Gs 138.4 mT	8.96 kg / 19.76 LBS 8963.2 g / 87.9 N	warning
30 mm	782 Gs 78.2 mT	2.86 kg / 6.31 LBS 2863.1 g / 28.1 N	warning
50 mm	293 Gs 29.3 mT	0.40 kg / 0.89 LBS 402.4 g / 3.9 N	safe

Grip strength weakens sharply with every mm of spacing. Remember that even a very thin break (e.g., dirt, paint, dust) strongly diminishes the holding power. Magnetic products work strongest during direct contact; gap weakens the force. Observe how rapidly the parameters drop, when the magnet does not adhere flatly to the metal substrate. When planning the arrangement, discard additional spacers.

Table 2: Slippage force (vertical surface)
MW 50x20 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	14.02 kg / 30.91 LBS 14020.0 g / 137.5 N
1 mm	Stal (~0.2)	13.08 kg / 28.84 LBS 13082.0 g / 128.3 N
2 mm	Stal (~0.2)	12.13 kg / 26.74 LBS 12130.0 g / 119.0 N
3 mm	Stal (~0.2)	11.19 kg / 24.67 LBS 11190.0 g / 109.8 N
5 mm	Stal (~0.2)	9.39 kg / 20.70 LBS 9388.0 g / 92.1 N
10 mm	Stal (~0.2)	5.66 kg / 12.48 LBS 5662.0 g / 55.5 N
15 mm	Stal (~0.2)	3.22 kg / 7.10 LBS 3220.0 g / 31.6 N
20 mm	Stal (~0.2)	1.79 kg / 3.95 LBS 1792.0 g / 17.6 N
30 mm	Stal (~0.2)	0.57 kg / 1.26 LBS 572.0 g / 5.6 N
50 mm	Stal (~0.2)	0.08 kg / 0.18 LBS 80.0 g / 0.8 N

The table below indicates the approximate holding capacity needed to cause the sliding of the magnet vertically along a upright metal surface (assuming typical friction). This value is a function of the distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 50x20 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	21.03 kg / 46.36 LBS 21030.0 g / 206.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	14.02 kg / 30.91 LBS 14020.0 g / 137.5 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	7.01 kg / 15.45 LBS 7010.0 g / 68.8 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	35.05 kg / 77.27 LBS 35050.0 g / 343.8 N

When hanging a holder on a upright plane (e.g., a fridge), it you can count on just approx. 20%-30% of its maximum pull force. Gravity as well as a low friction coefficient influence the fact that products slide down easier than they pull off. Designing a vertical fastening? Consider that the shear force is much weaker than the perpendicular breakaway force. On a slippery surface, the element will give way down under a much lighter load. Using a rubber layer can effectively increase the grip.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 50x20 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	2.34 kg / 5.15 LBS 2336.7 g / 22.9 N
1 mm	8%	5.84 kg / 12.88 LBS 5841.7 g / 57.3 N
2 mm	17%	11.68 kg / 25.76 LBS 11683.3 g / 114.6 N
3 mm	25%	17.53 kg / 38.64 LBS 17525.0 g / 171.9 N
5 mm	42%	29.21 kg / 64.39 LBS 29208.3 g / 286.5 N
10 mm	83%	58.42 kg / 128.79 LBS 58416.7 g / 573.1 N
11 mm	92%	64.26 kg / 141.67 LBS 64258.3 g / 630.4 N
12 mm	100%	70.10 kg / 154.54 LBS 70100.0 g / 687.7 N

A too thin steel is incapable of focus the entire magnetic field, which weakens actual performance of the holder. Should you mount a strong magnet to a too thin substrate, the flux will pass right through and the holding will be smaller. To achieve the maximum of this neodymium's power, you require a sufficiently solid backing of metal. The saturation phenomenon causes that on sheet metal structures (e.g., car bodies), the magnet shows lower pull force. We recommend selecting the steel dimension from these parameters.

Table 5: Thermal resistance (material behavior) - power drop
MW 50x20 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	70.10 kg / 154.54 LBS 70100.0 g / 687.7 N	OK
40 °C	-2.2%	68.56 kg / 151.14 LBS 68557.8 g / 672.6 N	OK
60 °C	-4.4%	67.02 kg / 147.74 LBS 67015.6 g / 657.4 N
80 °C	-6.6%	65.47 kg / 144.34 LBS 65473.4 g / 642.3 N
100 °C	-28.8%	49.91 kg / 110.04 LBS 49911.2 g / 489.6 N

Ordinary NdFeB products irreversibly lose strength past the thermal threshold. Watch out for overheating – heat can permanently destroy this product. With every degree above norm, the neodymium's power temporarily lowers. Refrain from using this product close to ovens exceeding its operating temperature limit. Ignoring the limit will result in irreversible degradation of magnetism.

*Technical advisory: Thermal stability is determined by both grade, but also on the magnet's shape. Low-profile magnets (low permeance coefficient) may lose charge permanently sooner than long magnets. Red status in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field collision
MW 50x20 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	181.46 kg / 400.06 LBS 5 255 Gs	27.22 kg / 60.01 LBS 27220 g / 267.0 N	N/A
1 mm	175.47 kg / 386.84 LBS 7 615 Gs	26.32 kg / 58.03 LBS 26321 g / 258.2 N	157.92 kg / 348.16 LBS ~0 Gs
2 mm	169.32 kg / 373.28 LBS 7 480 Gs	25.40 kg / 55.99 LBS 25398 g / 249.2 N	152.39 kg / 335.96 LBS ~0 Gs
3 mm	163.16 kg / 359.70 LBS 7 343 Gs	24.47 kg / 53.96 LBS 24474 g / 240.1 N	146.84 kg / 323.73 LBS ~0 Gs
5 mm	150.90 kg / 332.67 LBS 7 061 Gs	22.63 kg / 49.90 LBS 22634 g / 222.0 N	135.81 kg / 299.40 LBS ~0 Gs
10 mm	121.50 kg / 267.86 LBS 6 336 Gs	18.22 kg / 40.18 LBS 18225 g / 178.8 N	109.35 kg / 241.07 LBS ~0 Gs
20 mm	73.28 kg / 161.54 LBS 4 921 Gs	10.99 kg / 24.23 LBS 10991 g / 107.8 N	65.95 kg / 145.39 LBS ~0 Gs
50 mm	12.99 kg / 28.63 LBS 2 071 Gs	1.95 kg / 4.29 LBS 1948 g / 19.1 N	11.69 kg / 25.76 LBS ~0 Gs
60 mm	7.41 kg / 16.34 LBS 1 565 Gs	1.11 kg / 2.45 LBS 1112 g / 10.9 N	6.67 kg / 14.71 LBS ~0 Gs
70 mm	4.35 kg / 9.58 LBS 1 198 Gs	0.65 kg / 1.44 LBS 652 g / 6.4 N	3.91 kg / 8.62 LBS ~0 Gs
80 mm	2.62 kg / 5.78 LBS 931 Gs	0.39 kg / 0.87 LBS 393 g / 3.9 N	2.36 kg / 5.20 LBS ~0 Gs
90 mm	1.63 kg / 3.59 LBS 734 Gs	0.24 kg / 0.54 LBS 245 g / 2.4 N	1.47 kg / 3.23 LBS ~0 Gs
100 mm	1.04 kg / 2.30 LBS 587 Gs	0.16 kg / 0.34 LBS 156 g / 1.5 N	0.94 kg / 2.07 LBS ~0 Gs

Two magnetic products interact from a much further distance than a neodymium and metal combination. Such a system of two magnets produces a massive flux and a larger range of operation. Planning to create a strong closure? Use a pair of magnets instead of a neodymium and a striker plate. Be careful that when attracting two neodymiums, the pinch force is huge. The repulsion force is a bit weaker than the connection force, but still significant.
*Field value for N-N configuration drops to ~0 Gs in the exact middle of the gap (resulting from vector opposition).
* Figures refer to shear force of dual matching magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (electronics) - warnings
MW 50x20 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	24.0 cm
Hearing aid	10 Gs (1.0 mT)	19.0 cm
Timepiece	20 Gs (2.0 mT)	15.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	11.5 cm
Remote	50 Gs (5.0 mT)	10.5 cm
Payment card	400 Gs (40.0 mT)	4.5 cm
HDD hard drive	600 Gs (60.0 mT)	3.5 cm

A strong magnetic field poses a real danger to IT equipment as well as pacemakers. These neodymiums generate a flux that prevents correct functioning of digital equipment. Notice: the unseen radiation penetrates the body and glass. Special caution must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: automatic timepieces, car keys, speakers, and displays. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - warning
MW 50x20 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	19.09 km/h (5.30 m/s)	4.14 J
30 mm	27.63 km/h (7.67 m/s)	8.67 J
50 mm	34.92 km/h (9.70 m/s)	13.85 J
100 mm	49.21 km/h (13.67 m/s)	27.51 J

Magnetic elements are delicate – a collision with steel causes immediate chipping. Watch the impact speed – a neodymium left loose turns into a projectile. Kinetic force can destroy the magnet or painful pinches to skin. Be sure to control the product during mounting so it doesn't hit violently against the steel surface. A collision at high speed means shattering of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Coating parameters (durability)
MW 50x20 / 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. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
MW 50x20 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	78 540 Mx	785.4 µWb
P_c Coefficient	0.50	Low (Flat)

Total magnetic flux emitted by the magnet pole. Key data for generator designers as well as sensors. The P_c coefficient determines the magnet's operating point.

Table 11: Physics of underwater searching
MW 50x20 / N38

Environment	Effective steel pull	Effect
Air (land)	70.10 kg	Standard
Water (riverbed)	80.26 kg (+10.16 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. Buoyancy helps in lifting finds.

1. Sliding resistance

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

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) significantly limits the holding force.

3. Power loss vs temp

*For N38 grade, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.50

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.

Technical and environmental data

Chemical composition

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Sustainability

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

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

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

batch number/type

id: 010080-2026

Magnet Unit Converter

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Kilograms (kg)

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Type a number in one of the inputs, to see all other values change in real-time.

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MW 7x1.5 / N38 - cylindrical magnet

0.369 ZŁ brutto / pcs

This product is an incredibly powerful rod magnet, composed of durable NdFeB material, which, at dimensions of Ø50x20 mm, guarantees optimal power. The MW 50x20 / N38 component features a tolerance of ±0.1mm and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 70.10 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

It finds application in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 687.66 N with a weight of only 294.52 g, this rod is indispensable in electronics and wherever every gram matters.

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

Grade N38 is the most popular standard for professional neodymium magnets, offering an optimal price-to-power ratio and operational stability. If you need even stronger magnets in the same volume (Ø50x20), 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 Ø50x20 mm, which, at a weight of 294.52 g, makes it an element with impressive magnetic energy density. The value of 687.66 N means that the magnet is capable of holding a weight many times exceeding its own mass of 294.52 g. The product has a [NiCuNi] coating, which secures it against external factors, 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 50 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.

Strengths and weaknesses of rare earth magnets.

Benefits

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

They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (based on calculations),
Neodymium magnets prove to be extremely resistant to demagnetization caused by external interference,
The use of an shiny coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
They feature high magnetic induction at the operating surface, which improves attraction properties,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
In view of the possibility of accurate forming and adaptation to unique projects, neodymium magnets can be created in a wide range of shapes and sizes, which amplifies use scope,
Key role in future technologies – they serve a role in magnetic memories, drive modules, precision medical tools, also multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in compact constructions

Limitations

Disadvantages of NdFeB magnets:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
We suggest cover - magnetic mount, due to difficulties in realizing threads inside the magnet and complex shapes.
Health risk related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, small components of these products are able to complicate diagnosis medical when they are in the body.
With budget limitations the cost of neodymium magnets can be a barrier,

Pull force analysis

Highest magnetic holding force – what contributes to it?

Information about lifting capacity was defined for ideal contact conditions, including:

using a plate made of mild steel, acting as a circuit closing element
possessing a massiveness of minimum 10 mm to ensure full flux closure
with a plane free of scratches
without any insulating layer between the magnet and steel
during detachment in a direction perpendicular to the mounting surface
in stable room temperature

Determinants of lifting force in real conditions

Please note that the magnet holding may be lower subject to the following factors, starting with the most relevant:

Air gap (between the magnet and the plate), because even a microscopic distance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
Steel type – low-carbon steel gives the best results. Alloy admixtures lower magnetic properties and holding force.
Smoothness – full contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
Temperature – heating the magnet causes a temporary drop of force. It is worth remembering the thermal limit for a given model.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate lowers the lifting capacity.

Precautions when working with NdFeB magnets

Fire risk

Fire hazard: Rare earth powder is highly flammable. Do not process magnets in home conditions as this may cause fire.

Shattering risk

Protect your eyes. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. We recommend safety glasses.

Swallowing risk

Product intended for adults. Tiny parts can be swallowed, causing intestinal necrosis. Keep out of reach of children and animals.

Protect data

Avoid bringing magnets close to a wallet, computer, or TV. The magnetism can irreversibly ruin these devices and erase data from cards.

GPS and phone interference

An intense magnetic field interferes with the functioning of compasses in phones and navigation systems. Do not bring magnets near a device to prevent breaking the sensors.

Demagnetization risk

Keep cool. Neodymium magnets are sensitive to temperature. If you need operation above 80°C, inquire about HT versions (H, SH, UH).

Sensitization to coating

Medical facts indicate that nickel (standard magnet coating) is a potent allergen. For allergy sufferers, prevent direct skin contact and opt for encased magnets.

Serious injuries

Mind your fingers. Two powerful magnets will join instantly with a force of massive weight, crushing anything in their path. Be careful!

Respect the power

Use magnets with awareness. Their powerful strength can surprise even experienced users. Stay alert and do not underestimate their power.

Medical interference

Individuals with a heart stimulator have to maintain an absolute distance from magnets. The magnetism can disrupt the functioning of the life-saving device.

Security! Looking for details? Check our post: Why are neodymium magnets dangerous?

MW 50x20 / N38 - cylindrical magnet

Physical properties - MW 50x20 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the assembly - report

Table 1: Static pull force (force vs distance) - characteristics MW 50x20 / N38

Table 2: Slippage force (vertical surface) MW 50x20 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MW 50x20 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MW 50x20 / N38

Table 5: Thermal resistance (material behavior) - power drop MW 50x20 / N38

Table 6: Two magnets (repulsion) - field collision MW 50x20 / N38

Table 7: Safety (HSE) (electronics) - warnings MW 50x20 / N38

Table 8: Collisions (kinetic energy) - warning MW 50x20 / N38

Table 9: Coating parameters (durability) MW 50x20 / N38

Table 10: Electrical data (Pc) MW 50x20 / N38

Table 11: Physics of underwater searching MW 50x20 / N38

1. Sliding resistance

2. Plate thickness effect

3. Power loss vs temp

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

Chemical composition

Sustainability

Force (pull)

Magnetic Induction

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MW 7x1.5 / N38 - cylindrical magnet

Strengths and weaknesses of rare earth magnets.

Benefits

Limitations

Pull force analysis

Highest magnetic holding force – what contributes to it?

Determinants of lifting force in real conditions

Precautions when working with NdFeB magnets

Fire risk

Shattering risk

Swallowing risk

Protect data

GPS and phone interference

Demagnetization risk

Sensitization to coating

Serious injuries

Respect the power

Medical interference

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - characteristics
MW 50x20 / N38

Table 2: Slippage force (vertical surface)
MW 50x20 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 50x20 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 50x20 / N38

Table 5: Thermal resistance (material behavior) - power drop
MW 50x20 / N38

Table 6: Two magnets (repulsion) - field collision
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Table 7: Safety (HSE) (electronics) - warnings
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Table 8: Collisions (kinetic energy) - warning
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Table 9: Coating parameters (durability)
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Table 10: Electrical data (P_c)
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Table 11: Physics of underwater searching
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