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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: PLN 1-6500
Rating: 5

ring magnet

Catalog no 030395

GTIN/EAN: 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

technical specifications »

1.427 ZŁ with VAT / pcs + price for transport

1.160 ZŁ net + 23% VAT / pcs

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Technical data - MP 12x8/4x3 / N38 - ring magnet

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

properties

properties	values
Cat. no.	030395
GTIN/EAN	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	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

The following data constitute the outcome of a engineering simulation. Values are based on algorithms for the class Nd₂Fe₁₄B. Real-world performance may differ from theoretical values. Use these data as a reference point when designing systems.

Table 1: Static force (pull vs gap) - interaction chart
MP 12x8/4x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2423 Gs 242.3 mT	2.21 kg / 4.87 pounds 2210.0 g / 21.7 N	medium risk
1 mm	2138 Gs 213.8 mT	1.72 kg / 3.79 pounds 1720.7 g / 16.9 N	safe
2 mm	1786 Gs 178.6 mT	1.20 kg / 2.65 pounds 1200.5 g / 11.8 N	safe
3 mm	1437 Gs 143.7 mT	0.78 kg / 1.71 pounds 777.8 g / 7.6 N	safe
5 mm	885 Gs 88.5 mT	0.29 kg / 0.65 pounds 294.7 g / 2.9 N	safe
10 mm	277 Gs 27.7 mT	0.03 kg / 0.06 pounds 28.9 g / 0.3 N	safe
15 mm	110 Gs 11.0 mT	0.00 kg / 0.01 pounds 4.6 g / 0.0 N	safe
20 mm	53 Gs 5.3 mT	0.00 kg / 0.00 pounds 1.1 g / 0.0 N	safe
30 mm	18 Gs 1.8 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	safe
50 mm	4 Gs 0.4 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	safe

Magnetic force weakens drastically with every subsequent millimeter of spacing. Note that even the smallest gap (e.g., dirt, paint, rust) significantly reduces the pull force. Magnetic products work most effectively at the point of direct contact; distance nullifies the power. Notice how flashily the load capacity plummet, when the magnet does not touch flatly to the steel surface. When planning the arrangement, discard unnecessary gaps.

Table 2: Shear capacity (vertical surface)
MP 12x8/4x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.44 kg / 0.97 pounds 442.0 g / 4.3 N
1 mm	Stal (~0.2)	0.34 kg / 0.76 pounds 344.0 g / 3.4 N
2 mm	Stal (~0.2)	0.24 kg / 0.53 pounds 240.0 g / 2.4 N
3 mm	Stal (~0.2)	0.16 kg / 0.34 pounds 156.0 g / 1.5 N
5 mm	Stal (~0.2)	0.06 kg / 0.13 pounds 58.0 g / 0.6 N
10 mm	Stal (~0.2)	0.01 kg / 0.01 pounds 6.0 g / 0.1 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

The following data defines the theoretical shear load necessary to start the sliding of the magnet down on a vertical steel wall (assuming typical friction). This value is relative to the gap size between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MP 12x8/4x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.66 kg / 1.46 pounds 663.0 g / 6.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.44 kg / 0.97 pounds 442.0 g / 4.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.22 kg / 0.49 pounds 221.0 g / 2.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.11 kg / 2.44 pounds 1105.0 g / 10.8 N

When hanging a magnet on a vertical surface (e.g., a fridge), it will maintain just approx. 1/5 of nominal attraction strength. Gravitational force and a weak degree of grip mean that holders move down faster than they detach. Want to create a wall mount? Remember that the sliding force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the holder will slide down under a much lighter cargo. Using a rubber layer can significantly increase the grip.

Table 4: Steel thickness (saturation) - power losses
MP 12x8/4x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.22 kg / 0.49 pounds 221.0 g / 2.2 N
1 mm	25%	0.55 kg / 1.22 pounds 552.5 g / 5.4 N
2 mm	50%	1.11 kg / 2.44 pounds 1105.0 g / 10.8 N
3 mm	75%	1.66 kg / 3.65 pounds 1657.5 g / 16.3 N
5 mm	100%	2.21 kg / 4.87 pounds 2210.0 g / 21.7 N
10 mm	100%	2.21 kg / 4.87 pounds 2210.0 g / 21.7 N
11 mm	100%	2.21 kg / 4.87 pounds 2210.0 g / 21.7 N
12 mm	100%	2.21 kg / 4.87 pounds 2210.0 g / 21.7 N

A too thin steel is not enough to absorb the entire magnetic field, which wastes potential of the magnet. If you install a neodymium to a thin surface, the field will pass right through and the attraction force will be weaker. To squeeze 100% of this magnet's potential, you require a sufficiently solid element of steel. The material oversaturation causes that on sheet metal structures (e.g., car bodies), the product shows lower pull force. We advise picking the steel thickness based on the following data.

Table 5: Thermal stability (stability) - thermal limit
MP 12x8/4x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	2.21 kg / 4.87 pounds 2210.0 g / 21.7 N	OK
40 °C	-2.2%	2.16 kg / 4.77 pounds 2161.4 g / 21.2 N	OK
60 °C	-4.4%	2.11 kg / 4.66 pounds 2112.8 g / 20.7 N
80 °C	-6.6%	2.06 kg / 4.55 pounds 2064.1 g / 20.2 N
100 °C	-28.8%	1.57 kg / 3.47 pounds 1573.5 g / 15.4 N

Classic neodymiums irreversibly lose power above the temperature limit. Avoid high temperatures – high temperature can permanently damage this product. With every degree above norm, the magnet's power temporarily decreases. Avoid using this magnet near heat sources exceeding its safe range. Ignoring the limit will lead to destruction of magnetism.

*Technical advisory: Heat tolerance is determined by both grade, but also on the magnet's shape. Flat magnets (low Pc) are more susceptible to demagnetization at lower temperatures than long magnets. The danger warning in the table signals a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - forces in the system
MP 12x8/4x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	3.09 kg / 6.82 pounds 4 010 Gs	0.46 kg / 1.02 pounds 464 g / 4.6 N	N/A
1 mm	2.77 kg / 6.12 pounds 4 589 Gs	0.42 kg / 0.92 pounds 416 g / 4.1 N	2.50 kg / 5.50 pounds ~0 Gs
2 mm	2.41 kg / 5.31 pounds 4 276 Gs	0.36 kg / 0.80 pounds 361 g / 3.5 N	2.17 kg / 4.78 pounds ~0 Gs
3 mm	2.03 kg / 4.48 pounds 3 930 Gs	0.31 kg / 0.67 pounds 305 g / 3.0 N	1.83 kg / 4.04 pounds ~0 Gs
5 mm	1.36 kg / 3.00 pounds 3 216 Gs	0.20 kg / 0.45 pounds 204 g / 2.0 N	1.23 kg / 2.70 pounds ~0 Gs
10 mm	0.41 kg / 0.91 pounds 1 770 Gs	0.06 kg / 0.14 pounds 62 g / 0.6 N	0.37 kg / 0.82 pounds ~0 Gs
20 mm	0.04 kg / 0.09 pounds 554 Gs	0.01 kg / 0.01 pounds 6 g / 0.1 N	0.04 kg / 0.08 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 58 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.00 pounds 35 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
70 mm	0.00 kg / 0.00 pounds 23 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.00 pounds 16 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.00 pounds 11 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 8 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two strong neodymiums interact from a significantly greater distance than a magnet and steel combination. Such a system of two magnets creates a more powerful interaction and a wider radius of performance. Planning to create a strong closure? Utilize two neodymiums instead of a neodymium and a steel. Exercise caution that when connecting a pair of magnets, the impact force is extreme. The levitation is marginally weaker than the attraction, but still significant.
*Field value for N-N configuration reaches ~0 Gs at the midpoint of the gap (due to field cancellation).
* Estimates demonstrate sliding force of dual identical magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Hazards (electronics) - precautionary measures
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
Mobile device	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

Powerful magnet radiation is a serious hazard to IT equipment and medical implants. These magnets produce a field that prevents correct functioning of sensitive medical devices. Be aware: the unseen radiation penetrates the body and housings. Special caution must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: mechanical watches, car keys, speakers, and screens. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - warning
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 very brittle – a strong collision with metal risks their cracking. Control the attraction moment – a neodymium left loose speeds with massive force. Impact energy can destroy the magnet or painful pinches to fingers. Hold the magnet firmly during mounting so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Wear eye protection when playing 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (P_c)
MP 12x8/4x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	2 466 Mx	24.7 µWb
P_c Coefficient	0.32	Low (Flat)

Flux value emitted by the magnet pole. Key data when building generators and motors. P_c value defines 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%

Corrosion 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. Sliding resistance

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

2. Steel thickness impact

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

3. Heat tolerance

*For standard magnets, 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) = 0.32

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%

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: 030395-2026

Magnet Unit Converter

Force (pull)

Force in kg

Pounds (lbs)

Magnetic Induction

Simply complete a single box, and the calculator calculate the rest instantly.

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MP 24x16x2 / N38 - ring magnet

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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. This product with a force of 2.21 kg works great as a cabinet closure, speaker holder, or spacer element in devices.

This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. When tightening the screw, you must maintain caution. We recommend tightening manually with a screwdriver, not an impact driver, because too much pressure will cause the ring to crack. 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 is not sufficient for rain. 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.

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.

The presented product is a ring magnet with dimensions Ø12 mm (outer diameter) and height 3 mm. The pulling force of this model is an impressive 2.21 kg, which translates to 21.72 N in newtons. The mounting hole diameter is precisely 8/4 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. When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Pros

Besides their immense pulling force, neodymium magnets offer the following advantages:

Their magnetic field remains stable, and after around 10 years it drops only by ~1% (according to research),
They retain their magnetic properties even under close interference source,
By using a reflective coating of silver, the element has an professional look,
Magnets have very high magnetic induction on the outer layer,
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...
In view of the possibility of free molding and customization to individualized solutions, magnetic components can be modeled in a broad palette of geometric configurations, which makes them more universal,
Fundamental importance in electronics industry – they are utilized in data components, electromotive mechanisms, medical equipment, as well as multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which makes them useful in small systems

Disadvantages

Problematic aspects of neodymium magnets and proposals for their use:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also improves its resistance to damage
Neodymium magnets lose their strength 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
When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
Limited ability of producing nuts in the magnet and complex forms - preferred is casing - magnet mounting.
Possible danger resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the context of child health protection. It is also worth noting that small elements of these devices can complicate diagnosis medical in case of swallowing.
Due to expensive raw materials, their price is relatively high,

Holding force characteristics

Maximum lifting capacity of the magnet – what affects it?

Breakaway force is the result of a measurement for ideal contact conditions, including:

on a plate made of structural steel, effectively closing the magnetic flux
with a cross-section of at least 10 mm
with a plane free of scratches
under conditions of no distance (metal-to-metal)
under axial application of breakaway force (90-degree angle)
in neutral thermal conditions

Practical lifting capacity: influencing factors

During everyday use, the actual holding force results from many variables, listed from most significant:

Gap between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
Chemical composition of the base – mild steel gives the best results. Higher carbon content decrease magnetic permeability and holding force.
Surface condition – smooth surfaces guarantee perfect abutment, which improves force. Rough surfaces reduce efficiency.
Temperature influence – high temperature reduces magnetic field. Too high temperature can permanently damage the magnet.

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Safety rules for work with neodymium magnets

Dust is flammable

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

Cards and drives

Very strong magnetic fields can corrupt files on credit cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.

Nickel coating and allergies

Some people have a hypersensitivity to Ni, which is the common plating for NdFeB magnets. Prolonged contact may cause a rash. We suggest use protective gloves.

Fragile material

Despite the nickel coating, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.

Magnetic interference

An intense magnetic field disrupts the operation of compasses in smartphones and GPS navigation. Do not bring magnets near a smartphone to avoid breaking the sensors.

Maximum temperature

Monitor thermal conditions. Heating the magnet to high heat will ruin its properties and strength.

Danger to the youngest

NdFeB magnets are not toys. Eating a few magnets can lead to them attracting across intestines, which constitutes a direct threat to life and requires immediate surgery.

Warning for heart patients

For implant holders: Strong magnetic fields disrupt medical devices. Maintain minimum 30 cm distance or request help to handle the magnets.

Serious injuries

Protect your hands. Two powerful magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Be careful!

Safe operation

Handle with care. Neodymium magnets act from a distance and connect with huge force, often faster than you can move away.

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

MP 12x8/4x3 / N38 - ring magnet

Technical data - MP 12x8/4x3 / 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 force (pull vs gap) - interaction chart MP 12x8/4x3 / N38

Table 2: Shear capacity (vertical surface) MP 12x8/4x3 / N38

Table 3: Vertical assembly (sliding) - vertical pull MP 12x8/4x3 / N38

Table 4: Steel thickness (saturation) - power losses MP 12x8/4x3 / N38

Table 5: Thermal stability (stability) - thermal limit MP 12x8/4x3 / N38

Table 6: Two magnets (attraction) - forces in the system MP 12x8/4x3 / N38

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

Table 8: Dynamics (cracking risk) - warning MP 12x8/4x3 / N38

Table 9: Corrosion resistance MP 12x8/4x3 / N38

Table 10: Construction data (Pc) MP 12x8/4x3 / N38

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

1. Sliding resistance

2. Steel thickness impact

3. Heat tolerance

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

Material specification

Sustainability

Force (pull)

Magnetic Induction

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Advantages as well as disadvantages of Nd2Fe14B magnets.

Pros

Disadvantages

Holding force characteristics

Maximum lifting capacity of the magnet – what affects it?

Practical lifting capacity: influencing factors

Safety rules for work with neodymium magnets

Dust is flammable

Cards and drives

Nickel coating and allergies

Fragile material

Magnetic interference

Maximum temperature

Danger to the youngest

Warning for heart patients

Serious injuries

Safe operation

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - interaction chart
MP 12x8/4x3 / N38

Table 2: Shear capacity (vertical surface)
MP 12x8/4x3 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MP 12x8/4x3 / N38

Table 4: Steel thickness (saturation) - power losses
MP 12x8/4x3 / N38

Table 5: Thermal stability (stability) - thermal limit
MP 12x8/4x3 / N38

Table 6: Two magnets (attraction) - forces in the system
MP 12x8/4x3 / N38

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

Table 8: Dynamics (cracking risk) - warning
MP 12x8/4x3 / N38

Table 9: Corrosion resistance
MP 12x8/4x3 / N38

Table 10: Construction data (P_c)
MP 12x8/4x3 / N38

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

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.