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MW 8x20 / 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
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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Detailed specification - 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 magnet - report

The following data are the direct effect of a physical analysis. Results were calculated on algorithms for the class Nd₂Fe₁₄B. Actual conditions might slightly differ. Treat these calculations as a supplementary guide when designing systems.

Table 1: Static pull force (force vs distance) - 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	weak grip
1 mm	4587 Gs 458.7 mT	0.74 kg / 1.64 lbs 743.7 g / 7.3 N	weak grip
2 mm	3327 Gs 332.7 mT	0.39 kg / 0.86 lbs 391.4 g / 3.8 N	weak grip
3 mm	2388 Gs 238.8 mT	0.20 kg / 0.44 lbs 201.6 g / 2.0 N	weak grip
5 mm	1281 Gs 128.1 mT	0.06 kg / 0.13 lbs 58.0 g / 0.6 N	weak grip
10 mm	389 Gs 38.9 mT	0.01 kg / 0.01 lbs 5.4 g / 0.1 N	weak grip
15 mm	169 Gs 16.9 mT	0.00 kg / 0.00 lbs 1.0 g / 0.0 N	weak grip
20 mm	90 Gs 9.0 mT	0.00 kg / 0.00 lbs 0.3 g / 0.0 N	weak grip
30 mm	35 Gs 3.5 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	weak grip
50 mm	10 Gs 1.0 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	weak grip

Pulling power decreases sharply with every subsequent millimeter of gap. Keep in mind that every additional insulation layer (e.g., contamination, varnish, rust) noticeably diminishes the holding power. Magnetic products hold strongest in perfect adhesion; gap drastically cuts the force. Analyze how rapidly the load capacity drop, when the product does not touch tightly to the steel surface. When calculating the arrangement, eliminate additional spacers.

Table 2: Vertical force (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 table below calculates the theoretical holding capacity sufficient to initiate the slippage of the magnet vertically on a vertical steel wall (assuming typical friction). This value is relative to the separation distance between the magnet and the surface.

Table 3: Wall mounting (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 hanging a element on a upright wall (e.g., a car body), it will only hold barely about 20%-30% of its maximum pull force. Gravitational force and a low friction coefficient influence the fact that products slide down easier than they detach. Planning a vertical fastening? Note that the shear force is significantly lower than the maximum static pull force. On a painted metal, the magnet will slide down under a significantly smaller weight. Utilizing a rubberized layer can significantly raise the stability.

Table 4: Steel thickness (saturation) - sheet metal selection
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 too thin steel is incapable of focus the full magnetic flux, which weakens actual performance of the magnet. If you mount a strong magnet to a weak sheet, the flux will pass right through and the pull force will drop sharply. To achieve full efficiency of this magnet's potential, you need a suitably thick element of metal. The material oversaturation means that on sheet metal structures (e.g., car bodies), the holder shows lower pull force. We advise picking the steel dimension based on the following data.

Table 5: Working in heat (stability) - resistance threshold
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 change their properties strength above the temperature limit. Avoid high temperatures – heat can permanently damage this magnet. As the temperature rises, the neodymium's force temporarily drops. Avoid using this magnet close to heaters exceeding its working range. Ignoring the limit will cause destruction of magnetism.

*Important note: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Thin magnets (pancake types) may lose charge permanently at lower temperatures than taller cylinders. Warning indicator in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 8x20 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding 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 magnets attract each other from a wider radius than a magnet and sheet combination. Such a system of magnet-to-magnet creates a more powerful interaction and a wider radius of action. Planning to create a powerful holder? Utilize two neodymiums instead of one magnet and a steel. Be careful that when connecting a pair of magnets, the impact force is massive. The levitation is a bit weaker than the attraction, but still significant.
*The magnetic induction between like poles is approximately ~0 Gs at the midpoint between the magnets (due to field cancellation).
Important: Calculations apply to friction force of dual identical magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (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
Remote	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 real danger to electronic devices and medical implants. These NdFeB products produce a flux that destroys function of digital equipment. Notice: the invisible magnetic field penetrates the body and glass. Special caution must be exercised by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, remotes, speakers, and displays. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (cracking risk) - warning
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

NdFeB products are prone to chipping – a collision with steel causes immediate chipping. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Impact energy can destroy the magnet or injury to fingers. Be sure to control the product during mounting so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Wear eye protection when handling 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)

The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Improper coating selection is the most common cause of magnet failure over time.

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)

Total magnetic flux emitted by the pole surface. Key data when building generators and motors. P_c value determines the working geometry.

Table 11: Hydrostatics and buoyancy
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%

Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.

1. Wall mount (shear)

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

2. Steel saturation

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

3. Power loss vs temp

*For standard magnets, the max working temp is 80°C.

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

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

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

Material specification

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

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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MP 20x5x5 / N38 - ring magnet

2.76 ZŁ brutto / pcs

The offered product is an extremely powerful cylinder magnet, composed of advanced NdFeB material, which, at dimensions of Ø8x20 mm, guarantees optimal power. This specific item is characterized by a tolerance of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 1.30 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

This model is ideal for building generators, advanced Hall effect sensors, and efficient filters, 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 miniature devices and wherever every gram matters.

Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability 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 in continuous sale in our warehouse.

The presented product is a neodymium magnet with precisely defined parameters: diameter 8 mm and height 20 mm. The key parameter here is the lifting capacity 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 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 8 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 through the diameter if your project requires it.

Strengths and weaknesses of neodymium magnets.

Strengths

In addition to their pulling strength, neodymium magnets provide the following advantages:

They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (based on calculations),
They maintain their magnetic properties even under external field action,
A magnet with a shiny silver surface is more attractive,
Magnets possess excellent magnetic induction on the working surface,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the form) even at a temperature of 230°C or more...
Thanks to versatility in shaping and the capacity to adapt to specific needs,
Significant place in innovative solutions – they find application in computer drives, drive modules, precision medical tools, as well as modern systems.
Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Weaknesses

Characteristics of disadvantages of neodymium magnets: weaknesses and usage proposals

At strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
Due to limitations in producing nuts and complex forms in magnets, we recommend using a housing - magnetic mount.
Health risk resulting from small fragments of magnets are risky, if swallowed, which gains importance in the context of child safety. Furthermore, small elements of these magnets can disrupt the diagnostic process medical in case of swallowing.
Due to expensive raw materials, their price exceeds standard values,

Lifting parameters

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

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

with the use of a yoke made of low-carbon steel, ensuring maximum field concentration
with a cross-section no less than 10 mm
characterized by even structure
under conditions of ideal adhesion (surface-to-surface)
for force applied at a right angle (pull-off, not shear)
in temp. approx. 20°C

What influences lifting capacity in practice

Please note that the working load may be lower depending on elements below, starting with the most relevant:

Distance – the presence of foreign body (rust, tape, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
Angle of force application – maximum parameter is reached only during perpendicular pulling. The force required to slide of the magnet along the plate is typically several times lower (approx. 1/5 of the lifting capacity).
Substrate thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
Metal type – different alloys attracts identically. Alloy additives weaken the interaction with the magnet.
Surface structure – the more even the surface, the better the adhesion and stronger the hold. Unevenness creates an air distance.
Thermal conditions – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was assessed by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, whereas under parallel forces the lifting capacity is smaller. Additionally, even a small distance between the magnet and the plate decreases the holding force.

Warnings

Keep away from electronics

GPS units and smartphones are highly susceptible to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Magnets are brittle

NdFeB magnets are ceramic materials, which means they are very brittle. Collision of two magnets will cause them shattering into small pieces.

Electronic hazard

Powerful magnetic fields can erase data on credit cards, HDDs, and storage devices. Maintain a gap of at least 10 cm.

Pinching danger

Watch your fingers. Two powerful magnets will join instantly with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Life threat

Individuals with a pacemaker must keep an absolute distance from magnets. The magnetism can disrupt the operation of the life-saving device.

Thermal limits

Do not overheat. NdFeB magnets are susceptible to temperature. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).

Danger to the youngest

Strictly keep magnets out of reach of children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are fatal.

Avoid contact if allergic

A percentage of the population have a hypersensitivity to Ni, which is the common plating for neodymium magnets. Prolonged contact may cause skin redness. We recommend use protective gloves.

Mechanical processing

Machining of NdFeB material carries a risk of fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Safe operation

Exercise caution. Neodymium magnets attract from a long distance and connect with huge force, often faster than you can move away.

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

MW 8x20 / N38 - cylindrical magnet

Detailed specification - MW 8x20 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the magnet - report

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

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

Table 3: Wall mounting (shearing) - vertical pull MW 8x20 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MW 8x20 / N38

Table 5: Working in heat (stability) - resistance threshold MW 8x20 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision MW 8x20 / N38

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

Table 8: Impact energy (cracking risk) - warning MW 8x20 / N38

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

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

Table 11: Hydrostatics and buoyancy MW 8x20 / N38

1. Wall mount (shear)

2. Steel saturation

3. Power loss vs temp

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

Material specification

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Induction

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MP 36.2x11/6x7.5 / N38 - ring magnet

BM 750x180x70 [4x M8] - magnetic beam

SM 25x150 [2xM8] / N42 - magnetic separator

MP 20x5x5 / N38 - ring magnet

Strengths and weaknesses of neodymium magnets.

Strengths

Weaknesses

Lifting parameters

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

What influences lifting capacity in practice

Warnings

Keep away from electronics

Magnets are brittle

Electronic hazard

Pinching danger

Life threat

Thermal limits

Danger to the youngest

Avoid contact if allergic

Mechanical processing

Safe operation

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

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

Table 3: Wall mounting (shearing) - vertical pull
MW 8x20 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MW 8x20 / N38

Table 5: Working in heat (stability) - resistance threshold
MW 8x20 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 8x20 / N38

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

Table 8: Impact energy (cracking risk) - warning
MW 8x20 / N38

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

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

Table 11: Hydrostatics and buoyancy
MW 8x20 / N38