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MP 20x8x5 / N38 - ring 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

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

see specifications »

3.80 ZŁ with VAT / pcs + price for transport

3.09 ZŁ net + 23% VAT / pcs

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Force along with structure of neodymium magnets can be estimated with our power calculator.

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Physical properties - 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 analysis of the magnet - report

The following data represent the outcome of a engineering calculation. Values are based on models for the material Nd₂Fe₁₄B. Actual performance may differ. Use these data as a reference point when designing systems.

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

Magnetic force decreases sharply with every subsequent millimeter of gap. Note that even the smallest gap (e.g., dirt, varnish, veneer) strongly weakens the grip. Neodymiums hold optimally during direct contact; air break weakens the force. Observe how quickly the pull force fall, when the magnet does not touch tightly to the steel surface. When planning the mounting, discard unnecessary gaps.

Table 2: Sliding force (wall)
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

This section presents the approximate holding capacity required to cause the shifting of the magnet vertically along a vertical steel wall (considering standard friction coefficient). This parameter depends on the gap size between the magnet and the surface.

Table 3: Wall mounting (sliding) - 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 hanging a element on a vertical surface (e.g., a car body), it will only hold barely approx. 1/5 of its nominal power. Gravity and a weak degree of grip mean that products slide down faster than they pull off. Planning a vertical fastening? Remember that the sliding force is significantly lower than the maximum static pull force. On a slippery surface, the element will slide down under a noticeably lighter load. Utilizing a rubberized pad can effectively improve the result.

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 conduct the entire magnetic field, which weakens actual performance of the magnet. If you attach a powerful product to a too thin substrate, the field will pass right through and the holding will be smaller. To utilize 100% of this neodymium's potential, you require a sufficiently solid element of steel. The saturation phenomenon means that on sheet metal structures (e.g., appliance housings), the holder works worse. We suggest choosing the steel dimension according to the table below.

Table 5: Thermal resistance (stability) - power drop
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

Standard neodymium magnets lose strength above the temperature limit. Watch out for overheating – excessive heat can irreversibly destroy this product. With increasing heat, the neodymium's force momentarily lowers. Avoid using this product near heat sources exceeding its operating temperature limit. Too high temperature will cause permanent loss of magnetism.

*Engineering note: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low permeance coefficient) are more susceptible to demagnetization sooner than taller cylinders. The danger warning in the table points to a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
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 magnetic products attract each other from a significantly greater distance than a magnet and steel setup. The connection of magnet-to-magnet creates a more powerful interaction and a larger range of action. Planning to create a strong closure? Utilize two neodymiums instead of one magnet and a steel. Remember that when bringing together two magnets, the collision energy is huge. The levitation is marginally weaker than the attraction, but still significant.
*Field value between like poles reaches ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
Important: Calculations show friction force of two matching magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Protective zones (implants) - warnings
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
Car key	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

A strong magnetic field is a large risk to IT equipment as well as pacemakers. These NdFeB products generate a flux that disrupts operation of sensitive medical devices. Notice: the invisible magnetic field penetrates the body and plastic. Exceptional care must be taken by people with hearing aids and drug dispensers. Influence will be felt by: mechanical watches, remotes, membranes, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - 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

NdFeB products are very brittle – a collision with steel can result in shattering. Control the attraction moment – a neodymium left loose speeds with massive force. Impact energy can trigger coating fragments or dangerous crushing to fingers. Be sure to control the product during installation 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. Use safety goggles when handling with large magnets.

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: Electrical data (P_c)
MP 20x8x5 / N38

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

Flux value passing through the magnet pole. Key data in coil applications as well as sensors. The P_c coefficient defines the working geometry.

Table 11: Submerged application
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: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Water displaces steel, making heavy objects slightly lighter. However, remember the water resistance when pulling the rope quickly.

1. Shear force

*Caution: On a vertical surface, the magnet holds just a fraction of its max power.

2. Steel saturation

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

3. Temperature resistance

*For N38 material, 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

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 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: 030188-2026

Magnet Unit Converter

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Kilograms (kg)

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Put a figure in just one field to see the conversion for the other fields at once.

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MP 30x6x10 / N38 - ring magnet

16.00 ZŁ brutto / pcs

It is ideally suited for places where solid attachment of the magnet to the substrate is required without the risk of detachment. Thanks to the hole (often for a screw), this model enables easy screwing to wood, wall, plastic, or metal. It is also often used in advertising for fixing signs and in workshops for organizing tools.

This is a crucial issue when working with model MP 20x8x5 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. When tightening the screw, you must maintain great sensitivity. We recommend tightening manually with a screwdriver, not an impact driver, because excessive force will cause the ring to crack. The flat screw head should evenly press the magnet. Remember: cracking during assembly results from material properties, not a product defect.

Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. In the place of the mounting hole, the coating is thinner and easily scratched when tightening the screw, which will become a corrosion focus. 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 pulling force of this model is an impressive 5.82 kg, which translates to 57.06 N in newtons. 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 Nd₂Fe₁₄B magnets.

Benefits

In addition to their long-term stability, neodymium magnets provide the following advantages:

They have stable power, and over more than 10 years their performance decreases symbolically – ~1% (according to theory),
They maintain their magnetic properties even under close interference source,
In other words, due to the glossy layer of nickel, the element becomes visually attractive,
Neodymium magnets generate maximum magnetic induction on a their surface, which allows for strong attraction,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Possibility of custom creating as well as modifying to complex applications,
Significant place in high-tech industry – they are commonly used in computer drives, electric drive systems, precision medical tools, and modern systems.
Thanks to their power density, small magnets offer high operating force, with minimal size,

Disadvantages

Problematic aspects of neodymium magnets and ways of using them

To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
We suggest casing - magnetic mechanism, due to difficulties in creating threads inside the magnet and complicated shapes.
Possible danger related to microscopic parts of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child safety. Furthermore, small components of these devices 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 increases costs of application in large quantities

Lifting parameters

Highest magnetic holding force – what it depends on?

Magnet power is the result of a measurement for the most favorable conditions, taking into account:

with the contact of a sheet made of special test steel, guaranteeing full magnetic saturation
whose transverse dimension reaches at least 10 mm
characterized by lack of roughness
without any insulating layer between the magnet and steel
under perpendicular force vector (90-degree angle)
at temperature room level

Determinants of lifting force in real conditions

In real-world applications, the actual lifting capacity depends on many variables, ranked from the most important:

Gap (betwixt the magnet and the plate), as even a microscopic clearance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
Steel grade – ideal substrate is high-permeability steel. Hardened steels may generate lower lifting capacity.
Surface structure – the smoother and more polished the plate, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
Thermal conditions – NdFeB sinters 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 measured with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, in contrast under parallel forces the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate reduces the holding force.

Safety rules for work with neodymium magnets

Mechanical processing

Fire hazard: Rare earth powder is highly flammable. Avoid machining magnets without safety gear as this risks ignition.

Choking Hazard

NdFeB magnets are not suitable for play. Eating several magnets may result in them pinching intestinal walls, which poses a severe health hazard and requires urgent medical intervention.

Implant safety

People with a heart stimulator have to maintain an absolute distance from magnets. The magnetic field can interfere with the functioning of the implant.

Protect data

Do not bring magnets close to a wallet, laptop, or screen. The magnetic field can destroy these devices and erase data from cards.

Finger safety

Danger of trauma: The pulling power is so immense that it can result in hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Precision electronics

Navigation devices and mobile phones are extremely susceptible to magnetism. Direct contact with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Eye protection

Despite metallic appearance, the material is brittle and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Do not overheat magnets

Watch the temperature. Heating the magnet to high heat will destroy its magnetic structure and strength.

Nickel allergy

It is widely known that the nickel plating (standard magnet coating) is a potent allergen. If your skin reacts to metals, refrain from direct skin contact and select coated magnets.

Immense force

Use magnets consciously. Their powerful strength can shock even experienced users. Stay alert and respect their power.

Important! Want to know more? Read our article: Are neodymium magnets dangerous?

MP 20x8x5 / N38 - ring magnet

Physical properties - MP 20x8x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the magnet - report

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

Table 2: Sliding force (wall) MP 20x8x5 / N38

Table 3: Wall mounting (sliding) - vertical pull MP 20x8x5 / N38

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

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

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

Table 7: Protective zones (implants) - warnings MP 20x8x5 / N38

Table 8: Impact energy (cracking risk) - collision effects MP 20x8x5 / N38

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

Table 10: Electrical data (Pc) MP 20x8x5 / N38

Table 11: Submerged application MP 20x8x5 / N38

1. Shear force

2. Steel saturation

3. Temperature resistance

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

Material specification

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

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MP 30x6x10 / N38 - ring magnet

Pros and cons of Nd2Fe14B magnets.

Benefits

Disadvantages

Lifting parameters

Highest magnetic holding force – what it depends on?

Determinants of lifting force in real conditions

Safety rules for work with neodymium magnets

Mechanical processing

Choking Hazard

Implant safety

Protect data

Finger safety

Precision electronics

Eye protection

Do not overheat magnets

Nickel allergy

Immense force

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Sliding force (wall)
MP 20x8x5 / N38

Table 3: Wall mounting (sliding) - vertical pull
MP 20x8x5 / N38

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

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

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

Table 7: Protective zones (implants) - warnings
MP 20x8x5 / N38

Table 8: Impact energy (cracking risk) - collision effects
MP 20x8x5 / N38

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

Table 10: Electrical data (P_c)
MP 20x8x5 / N38

Table 11: Submerged application
MP 20x8x5 / N38

Pros and cons of Nd₂Fe₁₄B magnets.