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MP 30x7/3x3 / 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 030250

GTIN/EAN: 5906301812265

5.00

Diameter

30 mm [±0,1 mm]

internal diameter Ø

7/3 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

15.75 g

Magnetization Direction

↑ axial

Load capacity

3.64 kg / 35.69 N

Magnetic Induction

121.58 mT / 1216 Gs

Coating

[NiCuNi] Nickel

see technical data »

6.84 ZŁ with VAT / pcs + price for transport

5.56 ZŁ net + 23% VAT / pcs

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Force as well as form of a neodymium magnet can be tested with our force calculator.

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Technical details - MP 30x7/3x3 / N38 - ring magnet

Specification / characteristics - MP 30x7/3x3 / N38 - ring magnet

properties

properties	values
Cat. no.	030250
GTIN/EAN	5906301812265
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	30 mm [±0,1 mm]
internal diameter Ø	7/3 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	15.75 g
Magnetization Direction	↑ axial
Load capacity ~ ?	3.64 kg / 35.69 N
Magnetic Induction ~ ?	121.58 mT / 1216 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 30x7/3x3 / 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 analysis of the magnet - report

These information represent the outcome of a physical analysis. Values rely on algorithms for the class Nd₂Fe₁₄B. Actual conditions might slightly differ. Please consider these data as a reference point for designers.

Table 1: Static force (pull vs gap) - interaction chart
MP 30x7/3x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1039 Gs 103.9 mT	3.64 kg / 8.02 pounds 3640.0 g / 35.7 N	medium risk
1 mm	1015 Gs 101.5 mT	3.48 kg / 7.67 pounds 3477.6 g / 34.1 N	medium risk
2 mm	980 Gs 98.0 mT	3.24 kg / 7.14 pounds 3240.7 g / 31.8 N	medium risk
3 mm	936 Gs 93.6 mT	2.95 kg / 6.51 pounds 2951.6 g / 29.0 N	medium risk
5 mm	827 Gs 82.7 mT	2.31 kg / 5.08 pounds 2305.8 g / 22.6 N	medium risk
10 mm	539 Gs 53.9 mT	0.98 kg / 2.16 pounds 981.0 g / 9.6 N	low risk
15 mm	329 Gs 32.9 mT	0.37 kg / 0.80 pounds 365.1 g / 3.6 N	low risk
20 mm	202 Gs 20.2 mT	0.14 kg / 0.30 pounds 137.9 g / 1.4 N	low risk
30 mm	85 Gs 8.5 mT	0.02 kg / 0.05 pounds 24.6 g / 0.2 N	low risk
50 mm	23 Gs 2.3 mT	0.00 kg / 0.00 pounds 1.8 g / 0.0 N	low risk

Pulling power weakens sharply with every subsequent millimeter of gap. Keep in mind that even the smallest gap (e.g., contamination, paint, veneer) noticeably reduces the pull force. Neodymiums hold optimally during direct contact; gap kills the force. See how quickly the pull force drop, when the magnet does not adhere directly to the steel surface. When planning the arrangement, discard additional spacers.

Table 2: Slippage load (wall)
MP 30x7/3x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.73 kg / 1.60 pounds 728.0 g / 7.1 N
1 mm	Stal (~0.2)	0.70 kg / 1.53 pounds 696.0 g / 6.8 N
2 mm	Stal (~0.2)	0.65 kg / 1.43 pounds 648.0 g / 6.4 N
3 mm	Stal (~0.2)	0.59 kg / 1.30 pounds 590.0 g / 5.8 N
5 mm	Stal (~0.2)	0.46 kg / 1.02 pounds 462.0 g / 4.5 N
10 mm	Stal (~0.2)	0.20 kg / 0.43 pounds 196.0 g / 1.9 N
15 mm	Stal (~0.2)	0.07 kg / 0.16 pounds 74.0 g / 0.7 N
20 mm	Stal (~0.2)	0.03 kg / 0.06 pounds 28.0 g / 0.3 N
30 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

This section indicates the theoretical shear load needed to start the sliding of the magnet vertically against a vertical steel plate (assuming typical friction coefficient). This parameter depends on the distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - vertical pull
MP 30x7/3x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.09 kg / 2.41 pounds 1092.0 g / 10.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.73 kg / 1.60 pounds 728.0 g / 7.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.36 kg / 0.80 pounds 364.0 g / 3.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.82 kg / 4.01 pounds 1820.0 g / 17.9 N

When mounting a magnet on a vertical wall (e.g., a car body), it will only hold only about 1/5 of its maximum pull force. Gravitational force and a weak degree of grip cause that magnets slip easier than they pull off. Want to create a hanger? Remember that the sliding force is significantly lower than the perpendicular breakaway force. On a smooth steel, the element will give way down under a noticeably lighter weight. Application of an anti-slip layer can effectively raise the stability.

Table 4: Material efficiency (substrate influence) - power losses
MP 30x7/3x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.36 kg / 0.80 pounds 364.0 g / 3.6 N
1 mm	25%	0.91 kg / 2.01 pounds 910.0 g / 8.9 N
2 mm	50%	1.82 kg / 4.01 pounds 1820.0 g / 17.9 N
3 mm	75%	2.73 kg / 6.02 pounds 2730.0 g / 26.8 N
5 mm	100%	3.64 kg / 8.02 pounds 3640.0 g / 35.7 N
10 mm	100%	3.64 kg / 8.02 pounds 3640.0 g / 35.7 N
11 mm	100%	3.64 kg / 8.02 pounds 3640.0 g / 35.7 N
12 mm	100%	3.64 kg / 8.02 pounds 3640.0 g / 35.7 N

A too thin steel is unable to absorb the full magnetic flux, which weakens actual performance of the holder. If you attach a powerful product to a too thin substrate, the flux will penetrate right through and the attraction force will be weaker. To achieve 100% of this neodymium's power, you require a sufficiently solid backing of metal. The saturation phenomenon causes that on sheet metal structures (e.g., car bodies), the magnet works worse. We recommend selecting the steel dimension from these parameters.

Table 5: Thermal resistance (stability) - power drop
MP 30x7/3x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	3.64 kg / 8.02 pounds 3640.0 g / 35.7 N	OK
40 °C	-2.2%	3.56 kg / 7.85 pounds 3559.9 g / 34.9 N	OK
60 °C	-4.4%	3.48 kg / 7.67 pounds 3479.8 g / 34.1 N
80 °C	-6.6%	3.40 kg / 7.50 pounds 3399.8 g / 33.4 N
100 °C	-28.8%	2.59 kg / 5.71 pounds 2591.7 g / 25.4 N

Standard neodymium magnets lose power past the thermal threshold. Protect against heat – heat can permanently demagnetize this magnet. As the temperature rises, the neodymium's power momentarily lowers. Avoid using this magnet in hot environments exceeding its safe range. Too high temperature will cause permanent loss of magnetism.

*Engineering note: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Flat magnets (pancake types) risk losing magnetic properties sooner than long magnets. Red status in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (attraction) - forces in the system
MP 30x7/3x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	3.96 kg / 8.73 pounds 1 995 Gs	0.59 kg / 1.31 pounds 594 g / 5.8 N	N/A
1 mm	3.88 kg / 8.56 pounds 2 058 Gs	0.58 kg / 1.28 pounds 582 g / 5.7 N	3.49 kg / 7.70 pounds ~0 Gs
2 mm	3.78 kg / 8.34 pounds 2 031 Gs	0.57 kg / 1.25 pounds 567 g / 5.6 N	3.40 kg / 7.50 pounds ~0 Gs
3 mm	3.66 kg / 8.07 pounds 1 998 Gs	0.55 kg / 1.21 pounds 549 g / 5.4 N	3.30 kg / 7.26 pounds ~0 Gs
5 mm	3.37 kg / 7.43 pounds 1 918 Gs	0.51 kg / 1.12 pounds 506 g / 5.0 N	3.04 kg / 6.69 pounds ~0 Gs
10 mm	2.51 kg / 5.53 pounds 1 654 Gs	0.38 kg / 0.83 pounds 376 g / 3.7 N	2.26 kg / 4.97 pounds ~0 Gs
20 mm	1.07 kg / 2.35 pounds 1 079 Gs	0.16 kg / 0.35 pounds 160 g / 1.6 N	0.96 kg / 2.12 pounds ~0 Gs
50 mm	0.06 kg / 0.13 pounds 258 Gs	0.01 kg / 0.02 pounds 9 g / 0.1 N	0.05 kg / 0.12 pounds ~0 Gs
60 mm	0.03 kg / 0.06 pounds 171 Gs	0.00 kg / 0.01 pounds 4 g / 0.0 N	0.02 kg / 0.05 pounds ~0 Gs
70 mm	0.01 kg / 0.03 pounds 118 Gs	0.00 kg / 0.00 pounds 2 g / 0.0 N	0.01 kg / 0.03 pounds ~0 Gs
80 mm	0.01 kg / 0.01 pounds 84 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.01 pounds 62 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 47 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnetic products interact from a significantly greater distance than a magnet and steel combination. Such a system of magnet-to-magnet produces a massive flux and a further horizon of operation. Want to build a powerful holder? Apply two magnets instead of a neodymium and a steel. Exercise caution that when bringing together two magnets, the pinch force is massive. The levitation is marginally weaker than the connection force, but still significant.
*Flux density in repulsion mode reaches ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
Attention: Results demonstrate shear force of dual same magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Protective zones (implants) - precautionary measures
MP 30x7/3x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	9.0 cm
Hearing aid	10 Gs (1.0 mT)	7.0 cm
Mechanical watch	20 Gs (2.0 mT)	5.5 cm
Mobile device	40 Gs (4.0 mT)	4.5 cm
Car key	50 Gs (5.0 mT)	4.0 cm
Payment card	400 Gs (40.0 mT)	1.5 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 flux that prevents correct functioning of digital equipment. Remember: the invisible magnetic field passes through tissues and glass. Special caution must be taken by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, remotes, speakers, and displays. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Collisions (cracking risk) - collision effects
MP 30x7/3x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	17.73 km/h (4.92 m/s)	0.19 J
30 mm	26.67 km/h (7.41 m/s)	0.43 J
50 mm	34.29 km/h (9.53 m/s)	0.71 J
100 mm	48.48 km/h (13.47 m/s)	1.43 J

Neodymium magnets are delicate – a collision with steel can result in shattering. Watch the impact speed – a magnet released freely becomes dangerous. Striking energy can trigger coating fragments 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 ends with a crack of the neodymium. Wear eye protection when playing with powerful specimens.

Table 9: Corrosion resistance
MP 30x7/3x3 / 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 (Flux)
MP 30x7/3x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	8 395 Mx	84.0 µWb
P_c Coefficient	0.13	Low (Flat)

Flux value emitted by the pole surface. Key data for generator designers as well as sensors. P_c value defines the working geometry.

Table 11: Hydrostatics and buoyancy
MP 30x7/3x3 / N38

Environment	Effective steel pull	Effect
Air (land)	3.64 kg	Standard
Water (riverbed)	4.17 kg (+0.53 kg buoyancy gain)	+14.5%

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

The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Shear force

*Caution: On a vertical surface, the magnet holds only ~20% of its nominal pull.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) drastically reduces the holding force.

3. Power loss vs temp

*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) = 0.13

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

Technical specification and ecology

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%

Ecology and recycling (GPSR)

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

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

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

batch number/type

id: 030250-2026

Magnet Unit Converter

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Force (N)

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Input a value in one of the inputs, and the remaining fields change automatically.

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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. Mounting is clean and reversible, unlike gluing. It is also often used in advertising for fixing signs and in workshops for organizing tools.

This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. One turn too many can destroy the magnet, so do it slowly. 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. If you must use it outside, paint it with anti-corrosion paint after mounting.

A screw or bolt with a thread diameter smaller than 7/3 mm fits this model. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Aesthetic mounting requires selecting the appropriate head size.

The presented product is a ring magnet with dimensions Ø30 mm (outer diameter) and height 3 mm. The key parameter here is the holding force amounting to approximately 3.64 kg (force ~35.69 N). The mounting hole diameter is precisely 7/3 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.

Strengths and weaknesses of rare earth magnets.

Pros

Besides their stability, neodymium magnets are valued for these benefits:

They retain magnetic properties for nearly ten years – the drop is just ~1% (according to analyses),
They are noted for resistance to demagnetization induced by external field influence,
By covering with a reflective layer of nickel, the element acquires an professional look,
The surface of neodymium magnets generates a concentrated magnetic field – this is a distinguishing feature,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
Thanks to flexibility in constructing and the capacity to adapt to specific needs,
Huge importance in future technologies – they find application in mass storage devices, brushless drives, precision medical tools, as well as complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which makes them useful in small systems

Disadvantages

Drawbacks and weaknesses of neodymium magnets and ways of using them

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
NdFeB magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (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 recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
We recommend a housing - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complicated shapes.
Potential hazard to health – tiny shards of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that small components of these devices can disrupt the diagnostic process medical when they are in the body.
With budget limitations the cost of neodymium magnets is economically unviable,

Pull force analysis

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

Information about lifting capacity is the result of a measurement for ideal contact conditions, taking into account:

with the application of a yoke made of special test steel, ensuring maximum field concentration
possessing a massiveness of at least 10 mm to avoid saturation
characterized by even structure
with total lack of distance (no paint)
for force acting at a right angle (pull-off, not shear)
at ambient temperature approx. 20 degrees Celsius

What influences lifting capacity in practice

During everyday use, the actual lifting capacity results from several key aspects, presented from the most important:

Distance – the presence of any layer (rust, tape, gap) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
Load vector – maximum parameter is available only during pulling at a 90° angle. The shear force of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
Steel type – mild steel gives the best results. Alloy steels reduce magnetic properties and holding force.
Surface structure – the more even the surface, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
Thermal factor – hot environment weakens pulling force. Too high temperature can permanently damage the magnet.

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, in contrast under parallel forces the holding force is lower. Moreover, even a slight gap between the magnet and the plate lowers the holding force.

Precautions when working with NdFeB magnets

Magnets are brittle

Neodymium magnets are ceramic materials, which means they are prone to chipping. Clashing of two magnets leads to them breaking into small pieces.

Do not underestimate power

Handle magnets consciously. Their powerful strength can surprise even professionals. Stay alert and do not underestimate their power.

Bodily injuries

Risk of injury: The attraction force is so immense that it can cause blood blisters, crushing, and broken bones. Protective gloves are recommended.

Product not for children

Absolutely keep magnets out of reach of children. Ingestion danger is high, and the effects of magnets connecting inside the body are very dangerous.

Thermal limits

Do not overheat. Neodymium magnets are susceptible to temperature. If you need resistance above 80°C, inquire about HT versions (H, SH, UH).

Nickel coating and allergies

It is widely known that the nickel plating (standard magnet coating) is a potent allergen. If your skin reacts to metals, refrain from touching magnets with bare hands and opt for coated magnets.

Phone sensors

A powerful magnetic field negatively affects the functioning of magnetometers in smartphones and GPS navigation. Keep magnets near a device to avoid damaging the sensors.

Machining danger

Machining of NdFeB material poses a fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

ICD Warning

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

Data carriers

Very strong magnetic fields can destroy records on credit cards, hard drives, and storage devices. Stay away of at least 10 cm.

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

MP 30x7/3x3 / N38 - ring magnet

Technical details - MP 30x7/3x3 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the magnet - report

Table 1: Static force (pull vs gap) - interaction chart MP 30x7/3x3 / N38

Table 2: Slippage load (wall) MP 30x7/3x3 / N38

Table 3: Vertical assembly (shearing) - vertical pull MP 30x7/3x3 / N38

Table 4: Material efficiency (substrate influence) - power losses MP 30x7/3x3 / N38

Table 5: Thermal resistance (stability) - power drop MP 30x7/3x3 / N38

Table 6: Two magnets (attraction) - forces in the system MP 30x7/3x3 / N38

Table 7: Protective zones (implants) - precautionary measures MP 30x7/3x3 / N38

Table 8: Collisions (cracking risk) - collision effects MP 30x7/3x3 / N38

Table 9: Corrosion resistance MP 30x7/3x3 / N38

Table 10: Construction data (Flux) MP 30x7/3x3 / N38

Table 11: Hydrostatics and buoyancy MP 30x7/3x3 / N38

1. Shear force

2. Steel thickness impact

3. Power loss vs temp

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

Chemical composition

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Field

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Strengths and weaknesses of rare earth magnets.

Pros

Disadvantages

Pull force analysis

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

What influences lifting capacity in practice

Precautions when working with NdFeB magnets

Magnets are brittle

Do not underestimate power

Bodily injuries

Product not for children

Thermal limits

Nickel coating and allergies

Phone sensors

Machining danger

ICD Warning

Data carriers

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - interaction chart
MP 30x7/3x3 / N38

Table 2: Slippage load (wall)
MP 30x7/3x3 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MP 30x7/3x3 / N38

Table 4: Material efficiency (substrate influence) - power losses
MP 30x7/3x3 / N38

Table 5: Thermal resistance (stability) - power drop
MP 30x7/3x3 / N38

Table 6: Two magnets (attraction) - forces in the system
MP 30x7/3x3 / N38

Table 7: Protective zones (implants) - precautionary measures
MP 30x7/3x3 / N38

Table 8: Collisions (cracking risk) - collision effects
MP 30x7/3x3 / N38

Table 9: Corrosion resistance
MP 30x7/3x3 / N38

Table 10: Construction data (Flux)
MP 30x7/3x3 / N38

Table 11: Hydrostatics and buoyancy
MP 30x7/3x3 / N38