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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

technical parameters »

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Technical data - 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

Physical modeling of the magnet - data

The following information are the direct effect of a mathematical calculation. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Operational conditions might slightly deviate from the simulation results. Please consider these calculations as a preliminary roadmap when designing systems.

Table 1: Static force (pull 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	warning
1 mm	5321 Gs 532.1 mT	4.71 kg / 10.38 LBS 4707.4 g / 46.2 N	warning
2 mm	4736 Gs 473.6 mT	3.73 kg / 8.22 LBS 3729.5 g / 36.6 N	warning
3 mm	4184 Gs 418.4 mT	2.91 kg / 6.42 LBS 2910.0 g / 28.5 N	warning
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 drastically with every subsequent millimeter of gap. Note that even the smallest gap (e.g., dirt, paint, veneer) noticeably reduces the pull force. Magnets work most effectively in perfect adhesion; gap nullifies the power. Notice how rapidly the pull force fall, when the product does not touch flatly to the steel surface. When planning the mounting, discard additional spacers.

Table 2: Slippage 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

The table below presents the estimated holding capacity necessary to initiate the sliding of the magnet down against a upright steel plate (considering typical friction coefficient). This value varies with the gap size between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
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 element on a upright surface (e.g., a car body), it will maintain barely about 20%-30% of its maximum pull force. Gravitational force and a low friction coefficient cause that holders slip faster than they detach. Want to create a hanger? Remember that the shear force is much weaker than the maximum static pull force. On a slippery surface, the holder will give way down under a noticeably lighter load. Application of an anti-slip layer can effectively increase the grip.

Table 4: Steel thickness (saturation) - sheet metal selection
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 incapable of take in the full magnetic flux, which wastes potential of the magnet. Should you install a neodymium to a thin surface, the magnetism will penetrate right through and the holding will be smaller. To achieve the maximum of this neodymium's power, you need a suitably thick backing of metal. The saturation phenomenon means that on delicate walls (e.g., car bodies), the magnet works worse. We suggest choosing the steel thickness according to the table below.

Table 5: Working in heat (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

Ordinary NdFeB products lose parameters past the thermal threshold. Avoid high temperatures – heat can permanently damage this magnet. With every degree above norm, the neodymium's capacity momentarily lowers. Avoid using this product close to heaters higher than its operating temperature limit. Too high temperature will lead to destruction of magnetic properties.

*Technical advisory: Temperature resistance depends not only on the material grade, and the Permeance Coefficient Pc. Low-profile magnets (low Pc) may lose charge permanently sooner than taller cylinders. The danger warning in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - 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 interact from a wider radius than a magnet and steel setup. The setup of magnet-to-magnet creates a more powerful interaction and a larger range of performance. Want to build a strong closure? Utilize two neodymiums instead of a neodymium and a striker plate. Remember that when bringing together two magnets, the collision energy is huge. The levitation is marginally weaker than the connection force, but still large.
*The magnetic induction in repulsion mode is approximately ~0 Gs at the geometric center of the gap (due to field cancellation).
Attention: Figures show shear force of dual identical neodymium magnets (friction coefficient ~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
Timepiece	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

Powerful magnet radiation is a large risk to electronics as well as pacemakers. These NdFeB products generate a field that destroys function of sensitive medical devices. Notice: the invisible magnetic field penetrates the body and housings. Special caution must be taken by people with hearing aids and drug dispensers. The risk also applies to: automatic timepieces, remotes, speakers, and displays. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - warning
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 prone to chipping – a strong collision with metal can result in shattering. Pay attention to connection velocity – a magnet released freely speeds with massive force. Striking energy can trigger coating fragments or injury to skin. Always hold the magnet during bringing near metal 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 powerful specimens.

Table 9: Coating parameters (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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction 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 pole surface. Key data when building generators and motors. P_c value defines the working geometry.

Table 11: Physics of underwater searching
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%

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

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

1. Vertical hold

*Caution: On a vertical wall, the magnet retains merely ~20% of its nominal pull.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) severely limits the holding force.

3. Temperature resistance

*For N38 grade, 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) = 1.13

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

Chemical composition

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

Sustainability

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

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

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

batch number/type

id: 030188-2026

Measurement Calculator

Pulling force

Force in kg

Newtons (N)

Pounds (lbs)

Field Strength

Induction (Gs)

Tesla (T)

Simply populate one field, to let the calculator calculate the rest automatically.

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The ring magnet with a hole MP 20x8x5 / N38 is created for mechanical fastening, where glue might fail or be insufficient. 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 hard but breakable and inelastic. When tightening the screw, you must maintain great sensitivity. 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.

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. If the magnet does not have a chamfer (cone), we recommend using a screw with a flat or cylindrical head, or possibly using a washer. Always check that the screw head is not larger than the outer diameter of the magnet (20 mm), so it doesn't protrude beyond the outline.

It is a magnetic ring with a diameter of 20 mm and thickness 5 mm. The pulling force of this model is an impressive 5.82 kg, which translates to 57.06 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 8 mm.

The poles are located on the planes with holes, not on the sides of the ring. In the case of connecting two rings, make sure one is turned the right way. We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Pros

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (based on calculations),
Neodymium magnets are remarkably resistant to loss of magnetic properties caused by external interference,
The use of an refined finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
Magnetic induction on the working layer of the magnet is very high,
Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
Thanks to flexibility in designing and the ability to modify to client solutions,
Key role in high-tech industry – they serve a role in computer drives, motor assemblies, advanced medical instruments, also other advanced devices.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which enables their usage in small systems

Disadvantages

Disadvantages of neodymium magnets:

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a strong case, which not only secures them against impacts but also raises their durability
Neodymium magnets decrease their power 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. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
We suggest cover - magnetic mount, due to difficulties in producing nuts inside the magnet and complicated forms.
Health risk resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the context of child safety. Additionally, tiny parts of these devices are able to complicate diagnosis medical in case of swallowing.
Due to neodymium price, their price is relatively high,

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what affects it?

Magnet power was determined for the most favorable conditions, assuming:

with the application of a yoke made of special test steel, ensuring maximum field concentration
whose thickness is min. 10 mm
with a plane cleaned and smooth
with zero gap (no paint)
for force acting at a right angle (in the magnet axis)
at temperature approx. 20 degrees Celsius

Key elements affecting lifting force

Holding efficiency is affected by working environment parameters, including (from priority):

Air gap (between the magnet and the plate), since even a tiny distance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
Base massiveness – too thin steel causes magnetic saturation, causing part of the flux to be lost to the other side.
Chemical composition of the base – low-carbon steel gives the best results. Alloy admixtures reduce magnetic permeability and holding force.
Surface quality – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Roughness creates an air distance.
Thermal conditions – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and at low temperatures they can be stronger (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the load capacity is reduced by as much as 5 times. Moreover, even a minimal clearance between the magnet and the plate reduces the lifting capacity.

H&S for magnets

Keep away from computers

Intense magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

No play value

Always store magnets out of reach of children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are very dangerous.

Magnet fragility

Neodymium magnets are ceramic materials, meaning they are fragile like glass. Collision of two magnets will cause them shattering into small pieces.

Powerful field

Use magnets consciously. Their immense force can surprise even professionals. Stay alert and do not underestimate their power.

Hand protection

Big blocks can smash fingers instantly. Do not place your hand betwixt two strong magnets.

Avoid contact if allergic

Some people experience a hypersensitivity to nickel, which is the typical protective layer for neodymium magnets. Prolonged contact may cause skin redness. We recommend wear protective gloves.

Threat to navigation

GPS units and smartphones are highly sensitive to magnetism. Close proximity with a strong magnet can decalibrate the sensors in your phone.

Do not overheat magnets

Standard neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. Damage is permanent.

Dust is flammable

Drilling and cutting of NdFeB material poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Danger to pacemakers

Life threat: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Important! Learn more about risks in the article: Magnet Safety Guide.

MP 20x8x5 / N38 - ring magnet

Technical data - MP 20x8x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the magnet - data

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

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

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MP 20x8x5 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MP 20x8x5 / N38

Table 5: Working in heat (stability) - resistance threshold MP 20x8x5 / N38

Table 6: Two magnets (attraction) - field collision MP 20x8x5 / N38

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

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

Table 9: Coating parameters (durability) MP 20x8x5 / N38

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

Table 11: Physics of underwater searching MP 20x8x5 / N38

1. Vertical hold

2. Efficiency vs thickness

3. Temperature resistance

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

Chemical composition

Sustainability

Pulling force

Field Strength

See also products

MW 12x1 / N38 - cylindrical magnet

UMGZ 16x13x5 [M4] GZ / N38 - magnetic holder external thread

SM 32x250 [2xM8] / N52 - magnetic separator

UMP 107x40 [M8+M10] GW F 400 kg / N38 - search holder

Advantages and disadvantages of Nd2Fe14B magnets.

Pros

Disadvantages

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what affects it?

Key elements affecting lifting force

H&S for magnets

Keep away from computers

No play value

Magnet fragility

Powerful field

Hand protection

Avoid contact if allergic

Threat to navigation

Do not overheat magnets

Dust is flammable

Danger to pacemakers

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

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

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MP 20x8x5 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MP 20x8x5 / N38

Table 5: Working in heat (stability) - resistance threshold
MP 20x8x5 / N38

Table 6: Two magnets (attraction) - field collision
MP 20x8x5 / N38

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

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

Table 9: Coating parameters (durability)
MP 20x8x5 / N38

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

Table 11: Physics of underwater searching
MP 20x8x5 / N38

Advantages and disadvantages of Nd₂Fe₁₄B magnets.