Product available Ships tomorrow

MP 20x8x5 / N38 - ring 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

ring magnet

Catalog no 030188

GTIN/EAN: 5906301812050

5.00

Diameter

20 mm [±0,1 mm]

internal diameter Ø

8 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

9.9 g

Magnetization Direction

↑ axial

Load capacity

5.82 kg / 57.06 N

Magnetic Induction

277.16 mT / 2772 Gs

Coating

[NiCuNi] Nickel

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3.80 ZŁ with VAT / pcs + price for transport

3.09 ZŁ net + 23% VAT / pcs

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Technical specification of the product - MP 20x8x5 / N38 - ring magnet

Specification / characteristics - MP 20x8x5 / N38 - ring magnet

properties

properties	values
Cat. no.	030188
GTIN/EAN	5906301812050
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	20 mm [±0,1 mm]
internal diameter Ø	8 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	9.9 g
Magnetization Direction	↑ axial
Load capacity ~ ?	5.82 kg / 57.06 N
Magnetic Induction ~ ?	277.16 mT / 2772 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 20x8x5 / N38 - ring 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

Technical modeling of the product - technical parameters

The following values constitute the result of a mathematical calculation. Values were calculated on algorithms for the class Nd₂Fe₁₄B. Operational conditions might slightly differ. Use these data as a preliminary roadmap for designers.

Table 1: Static force (force vs distance) - characteristics
MP 20x8x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5917 Gs 591.7 mT	5.82 kg / 12.83 LBS 5820.0 g / 57.1 N	medium risk
1 mm	5321 Gs 532.1 mT	4.71 kg / 10.38 LBS 4707.4 g / 46.2 N	medium risk
2 mm	4736 Gs 473.6 mT	3.73 kg / 8.22 LBS 3729.5 g / 36.6 N	medium risk
3 mm	4184 Gs 418.4 mT	2.91 kg / 6.42 LBS 2910.0 g / 28.5 N	medium risk
5 mm	3216 Gs 321.6 mT	1.72 kg / 3.79 LBS 1719.3 g / 16.9 N	weak grip
10 mm	1650 Gs 165.0 mT	0.45 kg / 1.00 LBS 452.4 g / 4.4 N	weak grip
15 mm	907 Gs 90.7 mT	0.14 kg / 0.30 LBS 136.8 g / 1.3 N	weak grip
20 mm	544 Gs 54.4 mT	0.05 kg / 0.11 LBS 49.2 g / 0.5 N	weak grip
30 mm	240 Gs 24.0 mT	0.01 kg / 0.02 LBS 9.6 g / 0.1 N	weak grip
50 mm	75 Gs 7.5 mT	0.00 kg / 0.00 LBS 0.9 g / 0.0 N	weak grip

Pulling power decreases significantly with every mm of gap. Note that even a very thin break (e.g., dirt, paint, veneer) strongly weakens the grip. Neodymiums work optimally at the point of direct contact; air break kills the force. See how quickly the parameters drop, when the product does not adhere tightly to the metal substrate. When planning the assembly, eliminate unnecessary gaps.

Table 2: Shear capacity (vertical surface)
MP 20x8x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.16 kg / 2.57 LBS 1164.0 g / 11.4 N
1 mm	Stal (~0.2)	0.94 kg / 2.08 LBS 942.0 g / 9.2 N
2 mm	Stal (~0.2)	0.75 kg / 1.64 LBS 746.0 g / 7.3 N
3 mm	Stal (~0.2)	0.58 kg / 1.28 LBS 582.0 g / 5.7 N
5 mm	Stal (~0.2)	0.34 kg / 0.76 LBS 344.0 g / 3.4 N
10 mm	Stal (~0.2)	0.09 kg / 0.20 LBS 90.0 g / 0.9 N
15 mm	Stal (~0.2)	0.03 kg / 0.06 LBS 28.0 g / 0.3 N
20 mm	Stal (~0.2)	0.01 kg / 0.02 LBS 10.0 g / 0.1 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

The table below defines the approximate weight limit sufficient to cause the slippage of the magnet down on a upright metal surface (assuming typical friction coefficient). The holding force varies with the air gap between the magnet and the surface.

Table 3: Vertical assembly (shearing) - vertical pull
MP 20x8x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.75 kg / 3.85 LBS 1746.0 g / 17.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.16 kg / 2.57 LBS 1164.0 g / 11.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.58 kg / 1.28 LBS 582.0 g / 5.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.91 kg / 6.42 LBS 2910.0 g / 28.5 N

When placing a magnet on a vertical wall (e.g., a car body), it will maintain just about 20%-30% of its maximum pull force. Gravitational force and a weak degree of grip cause that products slip faster than they pop off the substrate. Designing a wall mount? Consider that the sliding force is significantly lower than the maximum static pull force. On a smooth steel, the element will slip down under a significantly smaller cargo. Using a rubber coating can significantly raise the stability.

Table 4: Material efficiency (saturation) - power losses
MP 20x8x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.58 kg / 1.28 LBS 582.0 g / 5.7 N
1 mm	25%	1.46 kg / 3.21 LBS 1455.0 g / 14.3 N
2 mm	50%	2.91 kg / 6.42 LBS 2910.0 g / 28.5 N
3 mm	75%	4.37 kg / 9.62 LBS 4365.0 g / 42.8 N
5 mm	100%	5.82 kg / 12.83 LBS 5820.0 g / 57.1 N
10 mm	100%	5.82 kg / 12.83 LBS 5820.0 g / 57.1 N
11 mm	100%	5.82 kg / 12.83 LBS 5820.0 g / 57.1 N
12 mm	100%	5.82 kg / 12.83 LBS 5820.0 g / 57.1 N

A thin sheet is not enough to take in the full magnetic flux, which wastes potential of the magnet. Should you install a neodymium to a too thin substrate, the flux will penetrate right through and the pull force will drop sharply. To achieve 100% of this neodymium's potential, you require a sufficiently solid piece of metal. The material oversaturation means that on delicate walls (e.g., thin profiles), the magnet works worse. We recommend selecting the steel thickness based on the following data.

Table 5: Thermal stability (stability) - resistance threshold
MP 20x8x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	5.82 kg / 12.83 LBS 5820.0 g / 57.1 N	OK
40 °C	-2.2%	5.69 kg / 12.55 LBS 5692.0 g / 55.8 N	OK
60 °C	-4.4%	5.56 kg / 12.27 LBS 5563.9 g / 54.6 N	OK
80 °C	-6.6%	5.44 kg / 11.98 LBS 5435.9 g / 53.3 N
100 °C	-28.8%	4.14 kg / 9.14 LBS 4143.8 g / 40.7 N

Classic neodymiums lose parameters past the thermal threshold. Protect against heat – high temperature can irreversibly damage this product. With every degree above norm, the magnet's power temporarily lowers. Avoid using this magnet close to ovens higher than its working range. Too high temperature will lead to permanent loss of magnetism.

*Engineering note: Heat tolerance is determined by both grade, as well as the dimension ratios. Low-profile magnets (pancake types) are more susceptible to demagnetization at lower temperatures compared to rod magnets. Red status in the table indicates a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MP 20x8x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	54.03 kg / 119.11 LBS 6 121 Gs	8.10 kg / 17.87 LBS 8104 g / 79.5 N	N/A
1 mm	48.76 kg / 107.50 LBS 11 242 Gs	7.31 kg / 16.13 LBS 7314 g / 71.8 N	43.89 kg / 96.75 LBS ~0 Gs
2 mm	43.70 kg / 96.34 LBS 10 642 Gs	6.55 kg / 14.45 LBS 6555 g / 64.3 N	39.33 kg / 86.71 LBS ~0 Gs
3 mm	38.98 kg / 85.94 LBS 10 051 Gs	5.85 kg / 12.89 LBS 5847 g / 57.4 N	35.08 kg / 77.34 LBS ~0 Gs
5 mm	30.63 kg / 67.54 LBS 8 910 Gs	4.60 kg / 10.13 LBS 4595 g / 45.1 N	27.57 kg / 60.78 LBS ~0 Gs
10 mm	15.96 kg / 35.19 LBS 6 432 Gs	2.39 kg / 5.28 LBS 2394 g / 23.5 N	14.36 kg / 31.67 LBS ~0 Gs
20 mm	4.20 kg / 9.26 LBS 3 299 Gs	0.63 kg / 1.39 LBS 630 g / 6.2 N	3.78 kg / 8.33 LBS ~0 Gs
50 mm	0.19 kg / 0.42 LBS 702 Gs	0.03 kg / 0.06 LBS 29 g / 0.3 N	0.17 kg / 0.38 LBS ~0 Gs
60 mm	0.09 kg / 0.20 LBS 480 Gs	0.01 kg / 0.03 LBS 13 g / 0.1 N	0.08 kg / 0.18 LBS ~0 Gs
70 mm	0.05 kg / 0.10 LBS 342 Gs	0.01 kg / 0.01 LBS 7 g / 0.1 N	0.04 kg / 0.09 LBS ~0 Gs
80 mm	0.02 kg / 0.05 LBS 253 Gs	0.00 kg / 0.01 LBS 4 g / 0.0 N	0.02 kg / 0.05 LBS ~0 Gs
90 mm	0.01 kg / 0.03 LBS 193 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.03 LBS ~0 Gs
100 mm	0.01 kg / 0.02 LBS 150 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two strong neodymiums interact from a significantly greater distance than a magnet and steel combination. Such a system of two magnets generates a stronger field and a further horizon of performance. Planning to create a powerful holder? Use a pair of magnets instead of one magnet and a striker plate. Be careful that when connecting a pair of magnets, the impact force is extreme. The repulsion force is a bit weaker than the attraction, but still large.
*The magnetic induction in repulsion mode is approximately ~0 Gs at the geometric center between the magnets (due to field cancellation).
* Results apply to shear force of a pair of identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (electronics) - precautionary measures
MP 20x8x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	14.5 cm
Hearing aid	10 Gs (1.0 mT)	11.5 cm
Mechanical watch	20 Gs (2.0 mT)	9.0 cm
Mobile device	40 Gs (4.0 mT)	6.5 cm
Remote	50 Gs (5.0 mT)	6.0 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

Extremely neodym field poses a large risk to electronic devices and medical implants. These NdFeB products produce a flux that disrupts operation of sensitive medical devices. Remember: the unseen radiation penetrates the body and housings. Exceptional care must be exercised by people with hearing aids and insulin pumps. The risk also applies to: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - collision effects
MP 20x8x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	25.61 km/h (7.11 m/s)	0.25 J
30 mm	42.40 km/h (11.78 m/s)	0.69 J
50 mm	54.68 km/h (15.19 m/s)	1.14 J
100 mm	77.33 km/h (21.48 m/s)	2.28 J

Neodymium magnets are very brittle – a strong collision with metal risks their cracking. Watch the impact speed – a magnet released freely turns into a projectile. Kinetic force can trigger coating fragments or painful pinches to skin. Hold the magnet firmly during bringing near metal so it doesn't hit with great force against the steel surface. A collision at high speed almost guarantees destruction of the magnet. Use safety goggles when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MP 20x8x5 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (Flux)
MP 20x8x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	16 116 Mx	161.2 µWb
P_c Coefficient	1.13	High (Stable)

Total magnetic flux passing through the pole surface. Key data in coil applications and motors. The P_c coefficient defines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MP 20x8x5 / N38

Environment	Effective steel pull	Effect
Air (land)	5.82 kg	Standard
Water (riverbed)	6.66 kg (+0.84 kg buoyancy gain)	+14.5%

Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Wall mount (shear)

*Note: On a vertical surface, the magnet retains merely approx. 20-30% of its nominal pull.

2. Plate thickness effect

*Thin metal sheet (e.g. computer case) significantly reduces the holding force.

3. Thermal stability

*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) = 1.13

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 and environmental data

Elemental analysis

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: 030188-2026

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The ring-shaped magnet MP 20x8x5 / N38 is created for permanent mounting, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables quick installation to wood, wall, plastic, or metal. This product with a force of 5.82 kg works great as a door latch, speaker holder, or mounting element in devices.

This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. When tightening the screw, you must maintain caution. We recommend tightening manually with a screwdriver, not an impact driver, because too much pressure will cause the ring to crack. It's a good idea to use a rubber spacer under the screw head, which will cushion the stresses. Remember: cracking during assembly results from material properties, not a product defect.

These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but does not ensure full waterproofing. Damage to the protective layer during assembly is the most common cause of rusting. If you must use it outside, paint it with anti-corrosion paint after mounting.

A screw or bolt with a thread diameter smaller than 8 mm fits this model. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Aesthetic mounting requires selecting the appropriate head size.

This model is characterized by dimensions Ø20x5 mm and a weight of 9.9 g. The key parameter here is the lifting capacity amounting to approximately 5.82 kg (force ~57.06 N). The mounting hole diameter is precisely 8 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Pros and cons of neodymium magnets.

Benefits

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

Their magnetic field is durable, and after around ten years it drops only by ~1% (theoretically),
They possess excellent resistance to weakening of magnetic properties due to opposing magnetic fields,
In other words, due to the smooth surface of gold, the element gains a professional look,
The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
In view of the possibility of flexible molding and adaptation to unique solutions, magnetic components can be manufactured in a wide range of shapes and sizes, which expands the range of possible applications,
Wide application in innovative solutions – they are used in computer drives, motor assemblies, advanced medical instruments, also multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which makes them useful in compact constructions

Cons

Characteristics of disadvantages of neodymium magnets and ways of using them

They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also increases its resistance to damage
We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
We recommend cover - magnetic holder, due to difficulties in producing threads inside the magnet and complex forms.
Health risk to health – tiny shards of magnets are risky, in case of ingestion, which gains importance in the context of child health protection. It is also worth noting that small components of these magnets can be problematic in diagnostics medical when they are in the body.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Lifting parameters

Maximum lifting capacity of the magnet – what it depends on?

Holding force of 5.82 kg is a theoretical maximum value performed under the following configuration:

with the use of a yoke made of special test steel, ensuring maximum field concentration
whose thickness reaches at least 10 mm
with an ideally smooth contact surface
without the slightest insulating layer between the magnet and steel
during detachment in a direction vertical to the mounting surface
at temperature room level

Lifting capacity in real conditions – factors

Effective lifting capacity impacted by working environment parameters, mainly (from most important):

Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
Steel thickness – too thin sheet causes magnetic saturation, causing part of the flux to be escaped into the air.
Material composition – not every steel attracts identically. High carbon content worsen the attraction effect.
Surface structure – the more even the plate, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
Thermal environment – heating the magnet results in weakening of force. It is worth remembering the thermal limit for a given model.

Lifting capacity was assessed with the use of a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under shearing force the load capacity is reduced by as much as 5 times. Additionally, even a slight gap between the magnet and the plate decreases the holding force.

Precautions when working with NdFeB magnets

Compass and GPS

A strong magnetic field negatively affects the functioning of compasses in phones and navigation systems. Do not bring magnets near a smartphone to avoid damaging the sensors.

Heat sensitivity

Regular neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. Damage is permanent.

Electronic hazard

Data protection: Neodymium magnets can damage data carriers and sensitive devices (pacemakers, hearing aids, mechanical watches).

Choking Hazard

These products are not intended for children. Accidental ingestion of multiple magnets can lead to them attracting across intestines, which constitutes a direct threat to life and requires urgent medical intervention.

Powerful field

Exercise caution. Neodymium magnets attract from a distance and connect with massive power, often quicker than you can react.

Allergic reactions

Nickel alert: The nickel-copper-nickel coating contains nickel. If an allergic reaction appears, immediately stop working with magnets and wear gloves.

Medical implants

For implant holders: Powerful magnets disrupt electronics. Keep at least 30 cm distance or request help to work with the magnets.

Finger safety

Danger of trauma: The attraction force is so immense that it can cause blood blisters, crushing, and even bone fractures. Protective gloves are recommended.

Combustion hazard

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

Protective goggles

Watch out for shards. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.

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

MP 20x8x5 / N38 - ring magnet

Technical specification of the product - MP 20x8x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the product - technical parameters

Table 1: Static force (force vs distance) - characteristics MP 20x8x5 / N38

Table 2: Shear capacity (vertical surface) MP 20x8x5 / N38

Table 3: Vertical assembly (shearing) - vertical pull MP 20x8x5 / N38

Table 4: Material efficiency (saturation) - power losses MP 20x8x5 / N38

Table 5: Thermal stability (stability) - resistance threshold MP 20x8x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range MP 20x8x5 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures MP 20x8x5 / N38

Table 8: Dynamics (kinetic energy) - collision effects MP 20x8x5 / N38

Table 9: Anti-corrosion coating durability MP 20x8x5 / N38

Table 10: Construction data (Flux) MP 20x8x5 / N38

Table 11: Hydrostatics and buoyancy MP 20x8x5 / N38

1. Wall mount (shear)

2. Plate thickness effect

3. Thermal stability

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

Elemental analysis

Environmental data

Magnet pull force

Magnetic Induction

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Pros and cons of neodymium magnets.

Benefits

Cons

Lifting parameters

Maximum lifting capacity of the magnet – what it depends on?

Lifting capacity in real conditions – factors

Precautions when working with NdFeB magnets

Compass and GPS

Heat sensitivity

Electronic hazard

Choking Hazard

Powerful field

Allergic reactions

Medical implants

Finger safety

Combustion hazard

Protective goggles

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - characteristics
MP 20x8x5 / N38

Table 2: Shear capacity (vertical surface)
MP 20x8x5 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MP 20x8x5 / N38

Table 4: Material efficiency (saturation) - power losses
MP 20x8x5 / N38

Table 5: Thermal stability (stability) - resistance threshold
MP 20x8x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range
MP 20x8x5 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures
MP 20x8x5 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MP 20x8x5 / N38

Table 9: Anti-corrosion coating durability
MP 20x8x5 / N38

Table 10: Construction data (Flux)
MP 20x8x5 / N38

Table 11: Hydrostatics and buoyancy
MP 20x8x5 / N38