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MP 20x8/4x5 / 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 030333

GTIN/EAN: 5906301812272

5.00

Diameter

20 mm [±0,1 mm]

internal diameter Ø

8/4 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

11.31 g

Magnetization Direction

↑ axial

Load capacity

6.65 kg / 65.21 N

Magnetic Induction

277.16 mT / 2772 Gs

Coating

[NiCuNi] Nickel

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Technical details - MP 20x8/4x5 / N38 - ring magnet

Specification / characteristics - MP 20x8/4x5 / N38 - ring magnet

properties

properties	values
Cat. no.	030333
GTIN/EAN	5906301812272
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	8/4 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	11.31 g
Magnetization Direction	↑ axial
Load capacity ~ ?	6.65 kg / 65.21 N
Magnetic Induction ~ ?	277.16 mT / 2772 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 20x8/4x5 / 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

Engineering analysis of the product - technical parameters

Presented data are the direct effect of a physical simulation. Results rely on algorithms for the material Nd₂Fe₁₄B. Operational parameters may differ from theoretical values. Use these data as a reference point during assembly planning.

Table 1: Static pull force (force vs distance) - power drop
MP 20x8/4x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2424 Gs 242.4 mT	6.65 kg / 14.66 LBS 6650.0 g / 65.2 N	warning
1 mm	2265 Gs 226.5 mT	5.81 kg / 12.80 LBS 5807.9 g / 57.0 N	warning
2 mm	2070 Gs 207.0 mT	4.85 kg / 10.69 LBS 4851.0 g / 47.6 N	warning
3 mm	1858 Gs 185.8 mT	3.91 kg / 8.61 LBS 3906.5 g / 38.3 N	warning
5 mm	1437 Gs 143.7 mT	2.34 kg / 5.16 LBS 2338.7 g / 22.9 N	warning
10 mm	691 Gs 69.1 mT	0.54 kg / 1.19 LBS 540.5 g / 5.3 N	weak grip
15 mm	343 Gs 34.3 mT	0.13 kg / 0.29 LBS 133.3 g / 1.3 N	weak grip
20 mm	186 Gs 18.6 mT	0.04 kg / 0.09 LBS 39.3 g / 0.4 N	weak grip
30 mm	70 Gs 7.0 mT	0.01 kg / 0.01 LBS 5.5 g / 0.1 N	weak grip
50 mm	18 Gs 1.8 mT	0.00 kg / 0.00 LBS 0.4 g / 0.0 N	weak grip

Grip strength weakens drastically with every mm of spacing. Remember that even a microscopic distance (e.g., dirt, varnish, rust) noticeably diminishes the holding power. Magnetic products operate strongest in perfect adhesion; distance drastically cuts the power. See how flashily the load capacity plummet, when the magnet does not adhere tightly to the steel surface. When calculating the arrangement, discard unnecessary gaps.

Table 2: Sliding capacity (vertical surface)
MP 20x8/4x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.33 kg / 2.93 LBS 1330.0 g / 13.0 N
1 mm	Stal (~0.2)	1.16 kg / 2.56 LBS 1162.0 g / 11.4 N
2 mm	Stal (~0.2)	0.97 kg / 2.14 LBS 970.0 g / 9.5 N
3 mm	Stal (~0.2)	0.78 kg / 1.72 LBS 782.0 g / 7.7 N
5 mm	Stal (~0.2)	0.47 kg / 1.03 LBS 468.0 g / 4.6 N
10 mm	Stal (~0.2)	0.11 kg / 0.24 LBS 108.0 g / 1.1 N
15 mm	Stal (~0.2)	0.03 kg / 0.06 LBS 26.0 g / 0.3 N
20 mm	Stal (~0.2)	0.01 kg / 0.02 LBS 8.0 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 shear load required to cause the sliding of the magnet down against a upright metal surface (assuming typical friction). The holding force varies with the separation distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MP 20x8/4x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.00 kg / 4.40 LBS 1995.0 g / 19.6 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.33 kg / 2.93 LBS 1330.0 g / 13.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.67 kg / 1.47 LBS 665.0 g / 6.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.33 kg / 7.33 LBS 3325.0 g / 32.6 N

When mounting a element on a upright wall (e.g., a board), it will only hold only approx. 1/5 of its nominal power. Gravity as well as a low friction coefficient influence the fact that magnets slide down easier than they detach. Planning a wall mount? Remember that the shear force is much weaker than the maximum static pull force. On a smooth steel, the holder will give way down under a noticeably lighter weight. Application of an anti-slip coating can significantly increase the grip.

Table 4: Steel thickness (saturation) - power losses
MP 20x8/4x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.67 kg / 1.47 LBS 665.0 g / 6.5 N
1 mm	25%	1.66 kg / 3.67 LBS 1662.5 g / 16.3 N
2 mm	50%	3.33 kg / 7.33 LBS 3325.0 g / 32.6 N
3 mm	75%	4.99 kg / 11.00 LBS 4987.5 g / 48.9 N
5 mm	100%	6.65 kg / 14.66 LBS 6650.0 g / 65.2 N
10 mm	100%	6.65 kg / 14.66 LBS 6650.0 g / 65.2 N
11 mm	100%	6.65 kg / 14.66 LBS 6650.0 g / 65.2 N
12 mm	100%	6.65 kg / 14.66 LBS 6650.0 g / 65.2 N

A too thin steel is not enough to focus the entire magnetic field, which weakens actual performance of the holder. If you install a neodymium to a weak sheet, the field will pass right through and the pull force will drop sharply. To squeeze full efficiency of this neodymium's potential, you need a suitably thick backing of metal. The saturation effect means that on delicate walls (e.g., appliance housings), the product shows lower pull force. We advise picking the steel cross-section according to the table below.

Table 5: Thermal stability (material behavior) - power drop
MP 20x8/4x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	6.65 kg / 14.66 LBS 6650.0 g / 65.2 N	OK
40 °C	-2.2%	6.50 kg / 14.34 LBS 6503.7 g / 63.8 N	OK
60 °C	-4.4%	6.36 kg / 14.02 LBS 6357.4 g / 62.4 N
80 °C	-6.6%	6.21 kg / 13.69 LBS 6211.1 g / 60.9 N
100 °C	-28.8%	4.73 kg / 10.44 LBS 4734.8 g / 46.4 N

Classic neodymiums change their properties parameters past the thermal threshold. Watch out for overheating – high temperature can irreversibly demagnetize this product. With every degree above norm, the neodymium's power temporarily decreases. Do not use this product in hot environments exceeding its safe range. Ignoring the limit will result in irreversible degradation of magnetism.

*Important note: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Low-profile magnets (low permeance coefficient) may lose charge permanently under lower heat stress than long magnets. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MP 20x8/4x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	9.28 kg / 20.47 LBS 4 012 Gs	1.39 kg / 3.07 LBS 1393 g / 13.7 N	N/A
1 mm	8.73 kg / 19.25 LBS 4 701 Gs	1.31 kg / 2.89 LBS 1310 g / 12.8 N	7.86 kg / 17.33 LBS ~0 Gs
2 mm	8.11 kg / 17.88 LBS 4 530 Gs	1.22 kg / 2.68 LBS 1216 g / 11.9 N	7.30 kg / 16.09 LBS ~0 Gs
3 mm	7.45 kg / 16.42 LBS 4 342 Gs	1.12 kg / 2.46 LBS 1117 g / 11.0 N	6.70 kg / 14.78 LBS ~0 Gs
5 mm	6.10 kg / 13.45 LBS 3 930 Gs	0.92 kg / 2.02 LBS 915 g / 9.0 N	5.49 kg / 12.11 LBS ~0 Gs
10 mm	3.27 kg / 7.20 LBS 2 875 Gs	0.49 kg / 1.08 LBS 490 g / 4.8 N	2.94 kg / 6.48 LBS ~0 Gs
20 mm	0.75 kg / 1.66 LBS 1 382 Gs	0.11 kg / 0.25 LBS 113 g / 1.1 N	0.68 kg / 1.50 LBS ~0 Gs
50 mm	0.02 kg / 0.04 LBS 220 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.04 LBS ~0 Gs
60 mm	0.01 kg / 0.02 LBS 139 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
70 mm	0.00 kg / 0.01 LBS 93 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
80 mm	0.00 kg / 0.00 LBS 65 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 47 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 35 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 significantly greater distance than a neodymium and metal setup. Such a system of magnet-to-magnet produces a massive flux and a wider radius of performance. Want to build a strong closure? Use a pair of magnets instead of one magnet and a striker plate. Be careful that when bringing together two magnets, the pinch force is huge. The repulsion force is a bit weaker than the attraction, but still significant.
*Field value in repulsion mode is approximately ~0 Gs at the geometric center between the magnets (due to field cancellation).
Important: Results refer to shear force of a pair of matching neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (implants) - precautionary measures
MP 20x8/4x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	8.0 cm
Hearing aid	10 Gs (1.0 mT)	6.5 cm
Mechanical watch	20 Gs (2.0 mT)	5.0 cm
Mobile device	40 Gs (4.0 mT)	4.0 cm
Remote	50 Gs (5.0 mT)	3.5 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

A strong magnetic field is a serious hazard to electronic devices and pacemakers. These magnets produce a field that prevents correct functioning of digital equipment. Be aware: the invisible magnetic field passes through tissues and glass. Special caution must be exercised by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, remotes, speakers, and screens. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - collision effects
MP 20x8/4x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	25.67 km/h (7.13 m/s)	0.29 J
30 mm	42.38 km/h (11.77 m/s)	0.78 J
50 mm	54.68 km/h (15.19 m/s)	1.30 J
100 mm	77.33 km/h (21.48 m/s)	2.61 J

Magnetic elements are prone to chipping – a strong collision with metal causes immediate chipping. Control the attraction moment – a neodymium left loose turns into a projectile. Kinetic force can cause material chips or injury to skin. Always hold the magnet during mounting so it doesn't hit violently against the steel surface. A collision at high speed means shattering of the magnet. Wear safety glasses when playing with powerful specimens.

Table 9: Corrosion resistance
MP 20x8/4x5 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (P_c)
MP 20x8/4x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	7 218 Mx	72.2 µWb
P_c Coefficient	0.31	Low (Flat)

Flux value emitted by the pole surface. Key data when building generators and motors. The P_c coefficient defines the working geometry.

Table 11: Hydrostatics and buoyancy
MP 20x8/4x5 / N38

Environment	Effective steel pull	Effect
Air (land)	6.65 kg	Standard
Water (riverbed)	7.61 kg (+0.96 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. Sliding resistance

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

2. Steel saturation

*Thin metal sheet (e.g. computer case) severely reduces 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) = 0.31

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

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%

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: 030333-2025

Magnet Unit Converter

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NCM 10x13.5x5 / N38 - channel magnetic holder

3.39 ZŁ brutto / pcs

The ring magnet with a hole MP 20x8/4x5 / N38 is created for permanent mounting, 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. This product with a force of 6.65 kg works great as a door latch, speaker holder, or spacer element in devices.

This is a crucial issue when working with model MP 20x8/4x5 / 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 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.

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 8/4 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.

The presented product is a ring magnet with dimensions Ø20 mm (outer diameter) and height 5 mm. The key parameter here is the holding force amounting to approximately 6.65 kg (force ~65.21 N). The mounting hole diameter is precisely 8/4 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. 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 as well as disadvantages of neodymium magnets.

Benefits

Apart from their superior holding force, neodymium magnets have these key benefits:

They have unchanged lifting capacity, and over nearly ten years their performance decreases symbolically – ~1% (in testing),
Neodymium magnets are extremely resistant to loss of magnetic properties caused by external magnetic fields,
By using a shiny coating of silver, the element has an nice look,
Neodymium magnets ensure maximum magnetic induction on a contact point, which ensures high operational effectiveness,
Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
In view of the ability of accurate molding and customization to individualized needs, magnetic components can be manufactured in a wide range of forms and dimensions, which makes them more universal,
Significant place in innovative solutions – they find application in HDD drives, brushless drives, medical devices, also industrial machines.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which makes them useful in miniature devices

Disadvantages

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
We suggest cover - magnetic holder, due to difficulties in realizing nuts inside the magnet and complicated forms.
Health risk resulting from small fragments of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these devices can disrupt the diagnostic process medical in case of swallowing.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

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

The force parameter is a theoretical maximum value performed under standard conditions:

on a plate made of mild steel, perfectly concentrating the magnetic field
possessing a thickness of at least 10 mm to avoid saturation
with an ground contact surface
with direct contact (without coatings)
during detachment in a direction vertical to the plane
at conditions approx. 20°C

Determinants of lifting force in real conditions

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

Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
Base massiveness – insufficiently thick plate does not accept the full field, causing part of the flux to be lost to the other side.
Metal type – different alloys attracts identically. Alloy additives worsen the attraction effect.
Surface condition – smooth surfaces ensure maximum contact, which increases field saturation. Rough surfaces reduce efficiency.
Thermal factor – high temperature weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was assessed by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the holding force is lower. In addition, even a small distance between the magnet and the plate decreases the holding force.

Warnings

Medical implants

Patients with a pacemaker must maintain an safe separation from magnets. The magnetic field can interfere with the operation of the life-saving device.

Protective goggles

Protect your eyes. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.

Serious injuries

Risk of injury: The pulling power is so great that it can cause blood blisters, pinching, and broken bones. Protective gloves are recommended.

Machining danger

Drilling and cutting of neodymium magnets carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Electronic devices

Very strong magnetic fields can corrupt files on credit cards, HDDs, and storage devices. Stay away of at least 10 cm.

Powerful field

Before starting, read the rules. Sudden snapping can destroy the magnet or injure your hand. Be predictive.

Allergy Warning

Certain individuals have a sensitization to nickel, which is the standard coating for NdFeB magnets. Extended handling may cause an allergic reaction. We suggest wear protective gloves.

Compass and GPS

A strong magnetic field interferes with the operation of magnetometers in smartphones and navigation systems. Keep magnets close to a smartphone to avoid damaging the sensors.

Swallowing risk

Only for adults. Tiny parts pose a choking risk, causing serious injuries. Store out of reach of kids and pets.

Heat warning

Watch the temperature. Exposing the magnet above 80 degrees Celsius will ruin its properties and pulling force.

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

MP 20x8/4x5 / N38 - ring magnet

Technical details - MP 20x8/4x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the product - technical parameters

Table 1: Static pull force (force vs distance) - power drop MP 20x8/4x5 / N38

Table 2: Sliding capacity (vertical surface) MP 20x8/4x5 / N38

Table 3: Wall mounting (shearing) - vertical pull MP 20x8/4x5 / N38

Table 4: Steel thickness (saturation) - power losses MP 20x8/4x5 / N38

Table 5: Thermal stability (material behavior) - power drop MP 20x8/4x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MP 20x8/4x5 / N38

Table 7: Safety (HSE) (implants) - precautionary measures MP 20x8/4x5 / N38

Table 8: Collisions (kinetic energy) - collision effects MP 20x8/4x5 / N38

Table 9: Corrosion resistance MP 20x8/4x5 / N38

Table 10: Electrical data (Pc) MP 20x8/4x5 / N38

Table 11: Hydrostatics and buoyancy MP 20x8/4x5 / N38

1. Sliding resistance

2. Steel saturation

3. Temperature resistance

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

Elemental analysis

Sustainability

Magnet pull force

Magnetic Field

See also products

UMH 20x7x35 [M4] / N38 - magnetic holder with hook

SMZR 32x200 / N52 - magnetic separator with handle

NC NeoCube fi 5 mm kuleczki srebrne / N38 - neocube

NCM 10x13.5x5 / N38 - channel magnetic holder

Advantages as well as disadvantages of neodymium magnets.

Benefits

Disadvantages

Lifting parameters

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

Determinants of lifting force in real conditions

Warnings

Medical implants

Protective goggles

Serious injuries

Machining danger

Electronic devices

Powerful field

Allergy Warning

Compass and GPS

Swallowing risk

Heat warning

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - power drop
MP 20x8/4x5 / N38

Table 2: Sliding capacity (vertical surface)
MP 20x8/4x5 / N38

Table 3: Wall mounting (shearing) - vertical pull
MP 20x8/4x5 / N38

Table 4: Steel thickness (saturation) - power losses
MP 20x8/4x5 / N38

Table 5: Thermal stability (material behavior) - power drop
MP 20x8/4x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MP 20x8/4x5 / N38

Table 7: Safety (HSE) (implants) - precautionary measures
MP 20x8/4x5 / N38

Table 8: Collisions (kinetic energy) - collision effects
MP 20x8/4x5 / N38

Table 9: Corrosion resistance
MP 20x8/4x5 / N38

Table 10: Electrical data (P_c)
MP 20x8/4x5 / N38

Table 11: Hydrostatics and buoyancy
MP 20x8/4x5 / N38