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MP 12x8/4x3 / 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: 1-6500
Rating: 5

ring magnet

Catalog no 030395

GTIN: 5906301812326

5.00

Diameter

12 mm [±0,1 mm]

internal diameter Ø

8/4 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

2.26 g

Magnetization Direction

↑ axial

Load capacity

2.21 kg / 21.72 N

Magnetic Induction

277.09 mT / 2771 Gs

Coating

[NiCuNi] Nickel

1.427 ZŁ with VAT / pcs + price for transport

1.160 ZŁ net + 23% VAT / pcs

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MP 12x8/4x3 / N38 - ring magnet

Specification / characteristics MP 12x8/4x3 / N38 - ring magnet

properties

properties	values
Cat. no.	030395
GTIN	5906301812326
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	12 mm [±0,1 mm]
internal diameter Ø	8/4 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	2.26 g
Magnetization Direction	↑ axial
Load capacity ~ ?	2.21 kg / 21.72 N
Magnetic Induction ~ ?	277.09 mT / 2771 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 12x8/4x3 / N38 - ring magnet

properties	values	units
remenance Br [Min. - Max.] ?	12.2-12.6	kGs
remenance Br [Min. - Max.] ?	1220-1260	T
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 106	°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 simulation of the product - data

The following data are the outcome of a physical calculation. Values are based on models for the class NdFeB. Real-world performance might slightly deviate from the simulation results. Use these data as a supplementary guide during assembly planning.

Table 1: Static pull force (pull vs distance) - characteristics
MP 12x8/4x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	2423 Gs 242.3 mT	2.21 kg / 2210.0 g 21.7 N	medium risk
1 mm	2138 Gs 213.8 mT	1.72 kg / 1720.7 g 16.9 N	safe
2 mm	1786 Gs 178.6 mT	1.20 kg / 1200.5 g 11.8 N	safe
3 mm	1437 Gs 143.7 mT	0.78 kg / 777.8 g 7.6 N	safe
5 mm	885 Gs 88.5 mT	0.29 kg / 294.7 g 2.9 N	safe
10 mm	277 Gs 27.7 mT	0.03 kg / 28.9 g 0.3 N	safe
15 mm	110 Gs 11.0 mT	0.00 kg / 4.6 g 0.0 N	safe
20 mm	53 Gs 5.3 mT	0.00 kg / 1.1 g 0.0 N	safe
30 mm	18 Gs 1.8 mT	0.00 kg / 0.1 g 0.0 N	safe
50 mm	4 Gs 0.4 mT	0.00 kg / 0.0 g 0.0 N	safe

Pulling power decreases drastically with every mm of spacing. Note that even a very thin break (e.g., contamination, paint, rust) strongly weakens the grip. Neodymiums work optimally during direct contact; air break weakens the power. Analyze how quickly the pull force fall, when the magnet does not touch tightly to the metal substrate. When planning the mounting, eliminate unnecessary gaps.

Table 2: Shear Hold (Wall)
MP 12x8/4x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg)
0 mm	Stal (~0.2)	0.44 kg / 442.0 g 4.3 N
1 mm	Stal (~0.2)	0.34 kg / 344.0 g 3.4 N
2 mm	Stal (~0.2)	0.24 kg / 240.0 g 2.4 N
3 mm	Stal (~0.2)	0.16 kg / 156.0 g 1.5 N
5 mm	Stal (~0.2)	0.06 kg / 58.0 g 0.6 N
10 mm	Stal (~0.2)	0.01 kg / 6.0 g 0.1 N
15 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N

The following data calculates the theoretical holding capacity sufficient to cause the downward movement of the magnet downwards along a upright steel wall (considering standard friction). This value depends on the gap size between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MP 12x8/4x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.66 kg / 663.0 g 6.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.44 kg / 442.0 g 4.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.22 kg / 221.0 g 2.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.11 kg / 1105.0 g 10.8 N

When placing a element on a upright surface (e.g., a car body), it will maintain only about 20%-30% of its maximum pull force. Gravity as well as a weak degree of grip cause that magnets slip easier than they detach. Designing a wall mount? Consider that the shear force is noticeably lower than the maximum static pull force. On a smooth steel, the holder will give way down under a noticeably lighter weight. Utilizing a rubberized layer can significantly increase the grip.

Table 4: Material efficiency (saturation) - power losses
MP 12x8/4x3 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	10%	0.22 kg / 221.0 g 2.2 N
1 mm	25%	0.55 kg / 552.5 g 5.4 N
2 mm	50%	1.11 kg / 1105.0 g 10.8 N
5 mm	100%	2.21 kg / 2210.0 g 21.7 N
10 mm	100%	2.21 kg / 2210.0 g 21.7 N

A thin metal plate is not enough to take in the full magnetic flux, which squanders power of the magnet. If you attach a powerful product to a weak sheet, the magnetism will penetrate right through and the pull force will drop sharply. To squeeze 100% of this neodymium's power, you need a suitably thick element of steel. The saturation phenomenon causes that on delicate walls (e.g., appliance housings), the product works worse. We suggest choosing the steel thickness based on the following data.

Table 5: Thermal resistance (stability) - resistance threshold
MP 12x8/4x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	2.21 kg / 2210.0 g 21.7 N	OK
40 °C	-2.2%	2.16 kg / 2161.4 g 21.2 N	OK
60 °C	-4.4%	2.11 kg / 2112.8 g 20.7 N
80 °C	-6.6%	2.06 kg / 2064.1 g 20.2 N
100 °C	-28.8%	1.57 kg / 1573.5 g 15.4 N

Classic neodymiums change their properties parameters past the thermal threshold. Protect against heat – heat can permanently damage this magnet. As the temperature rises, the magnet's force momentarily drops. Do not use this magnet near heat sources higher than its safe range. Too high temperature will lead to irreversible degradation of magnetism.

*Engineering note: Temperature resistance is determined by both grade, as well as the dimension ratios. Low-profile magnets (low Pc) are more susceptible to demagnetization sooner compared to rod magnets. Warning indicator in the table points to permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MP 12x8/4x3 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	3.09 kg / 3092 g 30.3 N 4 010 Gs	N/A
1 mm	2.77 kg / 2774 g 27.2 N 4 589 Gs	2.50 kg / 2496 g 24.5 N ~0 Gs
2 mm	2.41 kg / 2408 g 23.6 N 4 276 Gs	2.17 kg / 2167 g 21.3 N ~0 Gs
3 mm	2.03 kg / 2034 g 20.0 N 3 930 Gs	1.83 kg / 1831 g 18.0 N ~0 Gs
5 mm	1.36 kg / 1362 g 13.4 N 3 216 Gs	1.23 kg / 1226 g 12.0 N ~0 Gs
10 mm	0.41 kg / 412 g 4.0 N 1 770 Gs	0.37 kg / 371 g 3.6 N ~0 Gs
20 mm	0.04 kg / 40 g 0.4 N 554 Gs	0.04 kg / 36 g 0.4 N ~0 Gs
50 mm	0.00 kg / 0 g 0.0 N 58 Gs	0.00 kg / 0 g 0.0 N ~0 Gs

Two strong neodymiums attract each other from a much further distance than a neodymium and metal setup. The connection of magnet-to-magnet produces a massive flux and a further horizon of performance. Want to build a strong closure? Use a pair of magnets instead of one magnet and a steel. Remember that when attracting two neodymiums, the impact force is extreme. The repulsion force is slightly lower than the attraction, but still impressive.
*Flux density for N-N configuration is approximately ~0 Gs at the geometric center of the gap (resulting from vector opposition).

Table 7: Hazards (electronics) - warnings
MP 12x8/4x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	5.0 cm
Hearing aid	10 Gs (1.0 mT)	4.0 cm
Timepiece	20 Gs (2.0 mT)	3.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	2.5 cm
Remote	50 Gs (5.0 mT)	2.5 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

A strong magnetic field is a serious hazard to electronics and pacemakers. These NdFeB products generate a field that disrupts operation of digital equipment. Remember: the unseen radiation passes through tissues and plastic. Increased vigilance must be exercised by people with hearing aids and drug dispensers. Also at risk are: mechanical watches, remotes, membranes, and displays. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - collision effects
MP 12x8/4x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	31.79 km/h (8.83 m/s)	0.09 J
30 mm	54.63 km/h (15.17 m/s)	0.26 J
50 mm	70.52 km/h (19.59 m/s)	0.43 J
100 mm	99.73 km/h (27.70 m/s)	0.87 J

Neodymium magnets are delicate – a violent impact against metal causes immediate chipping. Control the attraction moment – a neodymium left loose turns into a projectile. Kinetic force can cause material chips or dangerous crushing to fingers. Always hold the magnet during bringing near metal so it doesn't hit with great force against the metal. A collision at high speed ends with a crack of the neodymium. Wear eye protection when working with large magnets.

Table 9: Corrosion resistance
MP 12x8/4x3 / 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. Note the thickness of the protective layer.

Table 10: Design data (Flux)
MP 12x8/4x3 / N38

Parameter	Value	Jedn. SI / Opis
Strumień (Flux)	2 466 Mx	24.7 µWb
Współczynnik Pc	0.32	Niski (Płaski)

Total magnetic flux emitted by the pole face. Essential parameter for motor design and sensors. Permeance Coefficient determines the working geometry.

Table 11: Submerged application
MP 12x8/4x3 / N38

Environment	Effective steel pull	Effect
Air (land)	2.21 kg	Standard
Water (riverbed)	2.53 kg (+0.32 kg Buoyancy gain)	+14.5%

Warning: 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. Montaż na Ścianie (Ześlizg)

*Uwaga: Na pionowej ścianie magnes utrzyma tylko ok. 20-30% tego co na suficie.

2. Wpływ Grubości Blachy

*Cienka blacha (np. obudowa PC 0.5mm) drastycznie osłabia magnes.

3. Wytrzymałość Temperaturowa

*Dla materiału N38 granica bezpieczeństwa to 80°C.

Quick Unit Converter

Pulling Force

Newtons (N)

Pounds (lbs)

Magnetic Induction

Induction (Gs)

Tesla (T)

Simply fill in one field, and the converter calculate the rest for you.

Jak rozdzielać?

Nie próbuj odrywać magnesów siłą!
Zawsze zsuwaj je na bok krawędzi stołu.

STAY

MOVE

Zasady Bezpieczeństwa

Elektronika

Trzymaj z dala od dysków HDD, kart płatniczych i telefonów.

Rozruszniki Serca

Osoby z rozrusznikiem muszą zachować dystans min. 10 cm.

Nie dla dzieci

Ryzyko połknięcia. Połknięcie dwóch magnesów grozi śmiercią.

Kruchy materiał

Magnes to ceramika! Uderzenie o inny magnes spowoduje odpryski.

Do czego użyć tego magnesu?

Sprawdzone zastosowania dla wymiaru 15x10x2 mm

Elektronika i Czujniki

Idealny jako element wyzwalający dla czujników Halla oraz kontaktronów w systemach alarmowych. Płaski kształt (2mm) pozwala na ukrycie go w wąskich szczelinach obudowy.

Modelarstwo i Druk 3D

Stosowany do tworzenia niewidocznych zamknięć w modelach drukowanych 3D. Można go wprasować w wydruk lub wkleić w kieszeń zaprojektowaną w modelu CAD.

Meble i Fronty

Używany jako "domykacz" lekkich drzwiczek szafkowych, gdzie standardowe magnesy meblowe są za grube. Wymaga wklejenia w płytkie podfrezowanie.

MW 15x4 / N38 - cylindrical magnet

1.968 ZŁ brutto / pcs

Product available Ships tomorrow

SM 25x300 [2xM8] / N52 - magnetic separator

910.20 ZŁ brutto / pcs

Product available Ships tomorrow

MW 10x2 / N38 - cylindrical magnet

0.467 ZŁ brutto / pcs

Product available Ships tomorrow

MP 25x8x20 / N38 - ring magnet

41.71 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 quick installation 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 12x8/4x3 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. 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.

Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. Damage to the protective layer during assembly is the most common cause of rusting. This product is dedicated for inside building use. For outdoor applications, we recommend choosing rubberized holders or additional protection with varnish.

The inner hole diameter determines the maximum size of the mounting element. 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 (12 mm), so it doesn't protrude beyond the outline.

It is a magnetic ring with a diameter of 12 mm and thickness 3 mm. The key parameter here is the holding force amounting to approximately 2.21 kg (force ~21.72 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 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. When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Advantages as well as disadvantages of NdFeB magnets.

Besides their high retention, neodymium magnets are valued for these benefits:

They retain full power for almost ten years – the loss is just ~1% (in theory),
They maintain their magnetic properties even under close interference source,
A magnet with a shiny nickel surface has better aesthetics,
The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Thanks to the ability of flexible molding and customization to custom requirements, neodymium magnets can be manufactured in a variety of forms and dimensions, which makes them more universal,
Versatile presence in modern technologies – they find application in magnetic memories, brushless drives, advanced medical instruments, also complex engineering applications.
Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Problematic aspects of neodymium magnets: tips and applications.

At strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
Limited ability of producing threads in the magnet and complicated shapes - recommended is cover - magnetic holder.
Possible danger to health – tiny shards of magnets can be dangerous, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these products can disrupt the diagnostic process medical in case of swallowing.
With large orders the cost of neodymium magnets is economically unviable,

Detachment force of the magnet in optimal conditions – what contributes to it?

The force parameter is a result of laboratory testing executed under specific, ideal conditions:

with the contact of a sheet made of special test steel, ensuring full magnetic saturation
possessing a thickness of at least 10 mm to ensure full flux closure
with a plane free of scratches
under conditions of ideal adhesion (surface-to-surface)
under vertical force direction (90-degree angle)
in stable room temperature

Impact of factors on magnetic holding capacity in practice

It is worth knowing that the working load may be lower depending on elements below, in order of importance:

Clearance – the presence of foreign body (paint, tape, air) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet exhibits much less (often approx. 20-30% of maximum force).
Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
Steel grade – the best choice is pure iron steel. Stainless steels may attract less.
Surface condition – ground elements ensure maximum contact, which increases force. Rough surfaces reduce efficiency.
Temperature – heating the magnet results in weakening of force. Check the thermal limit for a given model.

* Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, in contrast under parallel forces the lifting capacity is smaller. In addition, even a slight gap {between} the magnet and the plate decreases the lifting capacity.

Advantages as well as disadvantages of NdFeB magnets.

Besides their high retention, neodymium magnets are valued for these benefits:

They retain full power for almost ten years – the loss is just ~1% (in theory),
They maintain their magnetic properties even under close interference source,
A magnet with a shiny nickel surface has better aesthetics,
The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Thanks to the ability of flexible molding and customization to custom requirements, neodymium magnets can be manufactured in a variety of forms and dimensions, which makes them more universal,
Versatile presence in modern technologies – they find application in magnetic memories, brushless drives, advanced medical instruments, also complex engineering applications.
Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Problematic aspects of neodymium magnets: tips and applications.

At strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
Limited ability of producing threads in the magnet and complicated shapes - recommended is cover - magnetic holder.
Possible danger to health – tiny shards of magnets can be dangerous, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these products can disrupt the diagnostic process medical in case of swallowing.
With large orders the cost of neodymium magnets is economically unviable,

Detachment force of the magnet in optimal conditions – what contributes to it?

The force parameter is a result of laboratory testing executed under specific, ideal conditions:

with the contact of a sheet made of special test steel, ensuring full magnetic saturation
possessing a thickness of at least 10 mm to ensure full flux closure
with a plane free of scratches
under conditions of ideal adhesion (surface-to-surface)
under vertical force direction (90-degree angle)
in stable room temperature

Impact of factors on magnetic holding capacity in practice

It is worth knowing that the working load may be lower depending on elements below, in order of importance:

Clearance – the presence of foreign body (paint, tape, air) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet exhibits much less (often approx. 20-30% of maximum force).
Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
Steel grade – the best choice is pure iron steel. Stainless steels may attract less.
Surface condition – ground elements ensure maximum contact, which increases force. Rough surfaces reduce efficiency.
Temperature – heating the magnet results in weakening of force. Check the thermal limit for a given model.

Safe handling of neodymium magnets

Swallowing risk

Absolutely keep magnets away from children. Ingestion danger is significant, and the consequences of magnets connecting inside the body are very dangerous.

Demagnetization risk

Watch the temperature. Exposing the magnet to high heat will permanently weaken its magnetic structure and strength.

Keep away from computers

Do not bring magnets near a wallet, computer, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.

Bone fractures

Big blocks can break fingers instantly. Under no circumstances put your hand betwixt two strong magnets.

Safe operation

Exercise caution. Neodymium magnets act from a distance and snap with massive power, often faster than you can react.

Avoid contact if allergic

A percentage of the population experience a sensitization to Ni, which is the typical protective layer for NdFeB magnets. Prolonged contact may cause a rash. We suggest wear safety gloves.

Implant safety

For implant holders: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Machining danger

Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this may cause fire.

Precision electronics

Note: neodymium magnets generate a field that disrupts sensitive sensors. Maintain a separation from your phone, device, and GPS.

Beware of splinters

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Clashing of two magnets leads to them shattering into shards.

Caution!

Looking for details? Read our article: Why are neodymium magnets dangerous?

MP 12x8/4x3 / N38 - ring magnet

Hunting for a discount?

MP 12x8/4x3 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the product - data

1. Montaż na Ścianie (Ześlizg)

2. Wpływ Grubości Blachy

3. Wytrzymałość Temperaturowa

Pulling Force

Magnetic Induction

Jak rozdzielać?

Elektronika

Rozruszniki Serca

Nie dla dzieci

Kruchy materiał

Do czego użyć tego magnesu?

Elektronika i Czujniki

Modelarstwo i Druk 3D

Meble i Fronty

See also offers

MW 15x4 / N38 - cylindrical magnet

SM 25x300 [2xM8] / N52 - magnetic separator

MW 10x2 / N38 - cylindrical magnet

MP 25x8x20 / N38 - ring magnet

Advantages as well as disadvantages of NdFeB magnets.

Detachment force of the magnet in optimal conditions – what contributes to it?

Impact of factors on magnetic holding capacity in practice

Advantages as well as disadvantages of NdFeB magnets.

Detachment force of the magnet in optimal conditions – what contributes to it?

Impact of factors on magnetic holding capacity in practice

Safe handling of neodymium magnets

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C