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MW 8x20 / 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 010475

GTIN/EAN: 5906301811138

5.00

Diameter Ø

8 mm [±0,1 mm]

Height

20 mm [±0,1 mm]

Weight

7.54 g

Magnetization Direction

→ diametrical

Load capacity

1.30 kg / 12.71 N

Magnetic Induction

607.01 mT / 6070 Gs

Coating

[NiCuNi] Nickel

see technical data »

4.60 ZŁ with VAT / pcs + price for transport

3.74 ZŁ net + 23% VAT / pcs

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Technical - MW 8x20 / N38 - cylindrical magnet

Specification / characteristics - MW 8x20 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010475
GTIN/EAN	5906301811138
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	8 mm [±0,1 mm]
Height	20 mm [±0,1 mm]
Weight	7.54 g
Magnetization Direction	→ diametrical
Load capacity ~ ?	1.30 kg / 12.71 N
Magnetic Induction ~ ?	607.01 mT / 6070 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 8x20 / 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

Presented data represent the direct effect of a mathematical calculation. Values rely on algorithms for the class Nd₂Fe₁₄B. Real-world performance may deviate from the simulation results. Please consider these calculations as a reference point when designing systems.

Table 1: Static pull force (force vs gap) - interaction chart
MW 8x20 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	6064 Gs 606.4 mT	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N	low risk
1 mm	4587 Gs 458.7 mT	0.74 kg / 1.64 LBS 743.7 g / 7.3 N	low risk
2 mm	3327 Gs 332.7 mT	0.39 kg / 0.86 LBS 391.4 g / 3.8 N	low risk
3 mm	2388 Gs 238.8 mT	0.20 kg / 0.44 LBS 201.6 g / 2.0 N	low risk
5 mm	1281 Gs 128.1 mT	0.06 kg / 0.13 LBS 58.0 g / 0.6 N	low risk
10 mm	389 Gs 38.9 mT	0.01 kg / 0.01 LBS 5.4 g / 0.1 N	low risk
15 mm	169 Gs 16.9 mT	0.00 kg / 0.00 LBS 1.0 g / 0.0 N	low risk
20 mm	90 Gs 9.0 mT	0.00 kg / 0.00 LBS 0.3 g / 0.0 N	low risk
30 mm	35 Gs 3.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk
50 mm	10 Gs 1.0 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk

Pulling power drops sharply with every subsequent millimeter of distance. Note that even a microscopic distance (e.g., dirt, paint, dust) strongly reduces the pull force. Neodymiums work optimally during direct contact; air break nullifies the power. Notice how quickly the parameters drop, when the product does not adhere flatly to the metal substrate. When planning the assembly, discard additional spacers.

Table 2: Vertical capacity (wall)
MW 8x20 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.26 kg / 0.57 LBS 260.0 g / 2.6 N
1 mm	Stal (~0.2)	0.15 kg / 0.33 LBS 148.0 g / 1.5 N
2 mm	Stal (~0.2)	0.08 kg / 0.17 LBS 78.0 g / 0.8 N
3 mm	Stal (~0.2)	0.04 kg / 0.09 LBS 40.0 g / 0.4 N
5 mm	Stal (~0.2)	0.01 kg / 0.03 LBS 12.0 g / 0.1 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

The following data presents the approximate force sufficient to cause the shifting of the magnet vertically on a vertical metal surface (considering standard friction). This parameter depends on the separation distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
MW 8x20 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.39 kg / 0.86 LBS 390.0 g / 3.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.26 kg / 0.57 LBS 260.0 g / 2.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.13 kg / 0.29 LBS 130.0 g / 1.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.65 kg / 1.43 LBS 650.0 g / 6.4 N

When placing a holder on a vertical plane (e.g., a board), it will only hold only about 20%-30% of nominal attraction strength. Gravity as well as a low friction coefficient influence the fact that magnets move down easier than they pull off. Planning a hanger? Note that the sliding force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the holder will give way down under a noticeably lighter load. Application of an anti-slip pad can significantly increase the grip.

Table 4: Steel thickness (saturation) - power losses
MW 8x20 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.13 kg / 0.29 LBS 130.0 g / 1.3 N
1 mm	25%	0.33 kg / 0.72 LBS 325.0 g / 3.2 N
2 mm	50%	0.65 kg / 1.43 LBS 650.0 g / 6.4 N
3 mm	75%	0.98 kg / 2.15 LBS 975.0 g / 9.6 N
5 mm	100%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N
10 mm	100%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N
11 mm	100%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N
12 mm	100%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N

A thin metal plate is unable to absorb the full magnetic flux, which wastes potential of the holder. Should you mount a strong magnet to a thin surface, the field will penetrate right through and the attraction force will be weaker. To squeeze full efficiency of this neodymium's potential, you need a suitably thick backing of steel. The saturation phenomenon causes that on thin elements (e.g., car bodies), the product shows lower pull force. We recommend selecting the steel dimension from these parameters.

Table 5: Working in heat (material behavior) - thermal limit
MW 8x20 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N	OK
40 °C	-2.2%	1.27 kg / 2.80 LBS 1271.4 g / 12.5 N	OK
60 °C	-4.4%	1.24 kg / 2.74 LBS 1242.8 g / 12.2 N	OK
80 °C	-6.6%	1.21 kg / 2.68 LBS 1214.2 g / 11.9 N
100 °C	-28.8%	0.93 kg / 2.04 LBS 925.6 g / 9.1 N

Classic neodymiums lose strength past the thermal threshold. Avoid high temperatures – high temperature can irreversibly destroy this magnet. With every degree above norm, the magnet's capacity temporarily decreases. Avoid using this product near heat sources higher than its safe range. Too high temperature will lead to irreversible degradation of magnetism.

*Important note: Temperature resistance is determined by both grade, as well as the dimension ratios. Thin magnets (low permeance coefficient) risk losing magnetic properties at lower temperatures than taller cylinders. Warning indicator in the table signals a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - forces in the system
MW 8x20 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	11.40 kg / 25.12 LBS 6 154 Gs	1.71 kg / 3.77 LBS 1709 g / 16.8 N	N/A
1 mm	8.76 kg / 19.31 LBS 10 632 Gs	1.31 kg / 2.90 LBS 1314 g / 12.9 N	7.88 kg / 17.38 LBS ~0 Gs
2 mm	6.52 kg / 14.37 LBS 9 174 Gs	0.98 kg / 2.16 LBS 978 g / 9.6 N	5.87 kg / 12.94 LBS ~0 Gs
3 mm	4.76 kg / 10.49 LBS 7 837 Gs	0.71 kg / 1.57 LBS 714 g / 7.0 N	4.28 kg / 9.44 LBS ~0 Gs
5 mm	2.46 kg / 5.43 LBS 5 637 Gs	0.37 kg / 0.81 LBS 369 g / 3.6 N	2.22 kg / 4.88 LBS ~0 Gs
10 mm	0.51 kg / 1.12 LBS 2 561 Gs	0.08 kg / 0.17 LBS 76 g / 0.7 N	0.46 kg / 1.01 LBS ~0 Gs
20 mm	0.05 kg / 0.10 LBS 778 Gs	0.01 kg / 0.02 LBS 7 g / 0.1 N	0.04 kg / 0.09 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 107 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
60 mm	0.00 kg / 0.00 LBS 69 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
70 mm	0.00 kg / 0.00 LBS 48 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
80 mm	0.00 kg / 0.00 LBS 34 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
90 mm	0.00 kg / 0.00 LBS 25 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
100 mm	0.00 kg / 0.00 LBS 19 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnetic products interact from a significantly greater distance than a magnet and sheet setup. The setup of two magnets generates a stronger field and a further horizon of action. Designing a solid fastener? Utilize two neodymiums instead of a neodymium and a steel. Exercise caution that when connecting a pair of magnets, the impact force is massive. The levitation is a bit weaker than the connection force, but still impressive.
*Field value in repulsion mode reaches ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
Attention: Results refer to shear force of a pair of identical magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (implants) - precautionary measures
MW 8x20 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.5 cm
Hearing aid	10 Gs (1.0 mT)	5.0 cm
Timepiece	20 Gs (2.0 mT)	4.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.0 cm
Car key	50 Gs (5.0 mT)	3.0 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation poses a large risk to IT equipment and pacemakers. These NdFeB products produce a flux that destroys function of digital equipment. Remember: the invisible magnetic field acts through matter and housings. Increased vigilance must be taken by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, car keys, membranes, and displays. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - collision effects
MW 8x20 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	13.28 km/h (3.69 m/s)	0.05 J
30 mm	22.94 km/h (6.37 m/s)	0.15 J
50 mm	29.61 km/h (8.23 m/s)	0.26 J
100 mm	41.88 km/h (11.63 m/s)	0.51 J

Neodymium magnets are prone to chipping – a violent impact against metal causes immediate chipping. Watch the impact speed – a neodymium left loose speeds with massive force. Striking energy can trigger coating fragments or injury to skin. Be sure to control the product during mounting so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Wear eye protection when playing with large magnets.

Table 9: Anti-corrosion coating durability
MW 8x20 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (Flux)
MW 8x20 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	3 457 Mx	34.6 µWb
P_c Coefficient	1.31	High (Stable)

Flux value passing through the magnet pole. Key data for generator designers as well as sensors. P_c value determines the magnet's operating point.

Table 11: Physics of underwater searching
MW 8x20 / N38

Environment	Effective steel pull	Effect
Air (land)	1.30 kg	Standard
Water (riverbed)	1.49 kg (+0.19 kg buoyancy gain)	+14.5%

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

In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

*Warning: On a vertical wall, the magnet holds merely ~20% of its perpendicular strength.

2. Efficiency vs thickness

*Thin metal sheet (e.g. 0.5mm PC case) significantly reduces the holding force.

3. Thermal stability

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.31

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%

Ecology and recycling (GPSR)

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: 010475-2026

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The presented product is an exceptionally strong rod magnet, composed of modern NdFeB material, which, with dimensions of Ø8x20 mm, guarantees the highest energy density. The MW 8x20 / N38 model boasts a tolerance of ±0.1mm and professional build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 1.30 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating shields 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 pull force of 12.71 N with a weight of only 7.54 g, this cylindrical magnet 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 immediate cracking of this precision component. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most popular standard for industrial neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø8x20), 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 8 mm and height 20 mm. The key parameter here is the holding force amounting to approximately 1.30 kg (force ~12.71 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 20 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.

Strengths and weaknesses of neodymium magnets.

Strengths

Besides their stability, neodymium magnets are valued for these benefits:

They have constant strength, and over around 10 years their performance decreases symbolically – ~1% (according to theory),
They maintain their magnetic properties even under strong external field,
Thanks to the shiny finish, the coating of nickel, gold-plated, or silver gives an aesthetic appearance,
They are known for high magnetic induction at the operating surface, which increases their power,
Neodymium magnets are characterized by very 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 forming and the capacity to customize to individual projects,
Significant place in innovative solutions – they serve a role in magnetic memories, brushless drives, precision medical tools, and technologically advanced constructions.
Thanks to their power density, small magnets offer high operating force, in miniature format,

Weaknesses

Disadvantages of NdFeB magnets:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects 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 very resistant to heat
When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
We recommend casing - magnetic mount, due to difficulties in producing threads inside the magnet and complex shapes.
Health risk resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the aspect of protecting the youngest. Furthermore, small components of these magnets can be problematic in diagnostics medical in case of swallowing.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

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

The specified lifting capacity refers to the peak performance, obtained under optimal environment, specifically:

with the use of a sheet made of special test steel, guaranteeing maximum field concentration
whose thickness equals approx. 10 mm
with an polished touching surface
under conditions of no distance (metal-to-metal)
for force applied at a right angle (in the magnet axis)
in neutral thermal conditions

Lifting capacity in real conditions – factors

Please note that the magnet holding will differ depending on the following factors, in order of importance:

Gap between magnet and steel – every millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
Direction of force – maximum parameter is available only during pulling at a 90° angle. The shear force of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
Plate thickness – too thin plate does not close the flux, causing part of the flux to be lost into the air.
Plate material – mild steel gives the best results. Higher carbon content reduce magnetic permeability and holding force.
Plate texture – smooth surfaces ensure maximum contact, which increases force. Rough surfaces reduce efficiency.
Thermal factor – high temperature weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

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

Precautions when working with neodymium magnets

Do not overheat magnets

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

Medical interference

Individuals with a pacemaker should maintain an large gap from magnets. The magnetic field can disrupt the operation of the life-saving device.

Allergy Warning

A percentage of the population experience a sensitization to nickel, which is the standard coating for neodymium magnets. Prolonged contact can result in skin redness. We recommend wear safety gloves.

Swallowing risk

Strictly keep magnets out of reach of children. Risk of swallowing is high, and the effects of magnets clamping inside the body are very dangerous.

Cards and drives

Do not bring magnets near a wallet, laptop, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.

Dust is flammable

Machining of NdFeB material carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Shattering risk

Beware of splinters. Magnets can fracture upon violent connection, ejecting shards into the air. We recommend safety glasses.

Pinching danger

Danger of trauma: The pulling power is so immense that it can cause hematomas, pinching, and even bone fractures. Use thick gloves.

Precision electronics

Be aware: neodymium magnets generate a field that disrupts precision electronics. Maintain a safe distance from your mobile, tablet, and GPS.

Handling rules

Be careful. Neodymium magnets act from a distance and connect with massive power, often quicker than you can react.

Important! Looking for details? Read our article: Are neodymium magnets dangerous?

MW 8x20 / N38 - cylindrical magnet

Technical - MW 8x20 / 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) - interaction chart MW 8x20 / N38

Table 2: Vertical capacity (wall) MW 8x20 / N38

Table 3: Vertical assembly (shearing) - vertical pull MW 8x20 / N38

Table 4: Steel thickness (saturation) - power losses MW 8x20 / N38

Table 5: Working in heat (material behavior) - thermal limit MW 8x20 / N38

Table 6: Two magnets (repulsion) - forces in the system MW 8x20 / N38

Table 7: Hazards (implants) - precautionary measures MW 8x20 / N38

Table 8: Dynamics (kinetic energy) - collision effects MW 8x20 / N38

Table 9: Anti-corrosion coating durability MW 8x20 / N38

Table 10: Construction data (Flux) MW 8x20 / N38

Table 11: Physics of underwater searching MW 8x20 / N38

1. Vertical hold

2. Efficiency vs thickness

3. Thermal stability

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

Chemical composition

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

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Strengths and weaknesses of neodymium magnets.

Strengths

Weaknesses

Pull force analysis

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

Lifting capacity in real conditions – factors

Precautions when working with neodymium magnets

Do not overheat magnets

Medical interference

Allergy Warning

Swallowing risk

Cards and drives

Dust is flammable

Shattering risk

Pinching danger

Precision electronics

Handling rules

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - interaction chart
MW 8x20 / N38

Table 2: Vertical capacity (wall)
MW 8x20 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MW 8x20 / N38

Table 4: Steel thickness (saturation) - power losses
MW 8x20 / N38

Table 5: Working in heat (material behavior) - thermal limit
MW 8x20 / N38

Table 6: Two magnets (repulsion) - forces in the system
MW 8x20 / N38

Table 7: Hazards (implants) - precautionary measures
MW 8x20 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MW 8x20 / N38

Table 9: Anti-corrosion coating durability
MW 8x20 / N38

Table 10: Construction data (Flux)
MW 8x20 / N38

Table 11: Physics of underwater searching
MW 8x20 / N38