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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

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6.84 ZŁ with VAT / pcs + price for transport

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Technical parameters of the product - 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 simulation of the assembly - report

The following values are the direct effect of a engineering calculation. Results are based on algorithms for the material Nd₂Fe₁₄B. Actual parameters might slightly differ from theoretical values. Use these data as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs distance) - power drop
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 LBS 3640.0 g / 35.7 N	medium risk
1 mm	1015 Gs 101.5 mT	3.48 kg / 7.67 LBS 3477.6 g / 34.1 N	medium risk
2 mm	980 Gs 98.0 mT	3.24 kg / 7.14 LBS 3240.7 g / 31.8 N	medium risk
3 mm	936 Gs 93.6 mT	2.95 kg / 6.51 LBS 2951.6 g / 29.0 N	medium risk
5 mm	827 Gs 82.7 mT	2.31 kg / 5.08 LBS 2305.8 g / 22.6 N	medium risk
10 mm	539 Gs 53.9 mT	0.98 kg / 2.16 LBS 981.0 g / 9.6 N	safe
15 mm	329 Gs 32.9 mT	0.37 kg / 0.80 LBS 365.1 g / 3.6 N	safe
20 mm	202 Gs 20.2 mT	0.14 kg / 0.30 LBS 137.9 g / 1.4 N	safe
30 mm	85 Gs 8.5 mT	0.02 kg / 0.05 LBS 24.6 g / 0.2 N	safe
50 mm	23 Gs 2.3 mT	0.00 kg / 0.00 LBS 1.8 g / 0.0 N	safe

Pulling power decreases significantly per each millimeter of spacing. Note that even a microscopic distance (e.g., contamination, paint, rust) strongly diminishes the holding power. Magnets operate strongest during direct contact; distance kills the force. See how flashily the load capacity plummet, when the product does not adhere tightly to the metal substrate. When calculating the assembly, eliminate unnecessary gaps.

Table 2: Slippage force (vertical surface)
MP 30x7/3x3 / N38

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

This section calculates the estimated holding capacity required to cause the downward movement of the magnet down on a vertical steel wall (considering typical friction). This value is relative to the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
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 LBS 1092.0 g / 10.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.73 kg / 1.60 LBS 728.0 g / 7.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.36 kg / 0.80 LBS 364.0 g / 3.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.82 kg / 4.01 LBS 1820.0 g / 17.9 N

When hanging a element on a upright plane (e.g., a fridge), it will only hold just approx. 1/5 of its nominal power. Gravitational force as well as a low friction coefficient influence the fact that holders slide down faster than they pop off the substrate. Designing a vertical fastening? Consider that the sliding force is much weaker than the perpendicular breakaway force. On a painted metal, the holder will slip down under a much lighter load. Application of an anti-slip coating can effectively improve the result.

Table 4: Material efficiency (saturation) - sheet metal selection
MP 30x7/3x3 / N38

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

A thin metal plate is not enough to conduct the entire magnetic field, which weakens actual performance of the magnet. If you attach a powerful product to a too thin substrate, the flux will penetrate right through and the holding will be smaller. To achieve 100% of this neodymium's potential, you require a sufficiently solid piece of metal. The saturation phenomenon causes that on thin elements (e.g., car bodies), the magnet shows lower pull force. We recommend selecting the steel cross-section according to the table below.

Table 5: Thermal stability (material behavior) - resistance threshold
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 LBS 3640.0 g / 35.7 N	OK
40 °C	-2.2%	3.56 kg / 7.85 LBS 3559.9 g / 34.9 N	OK
60 °C	-4.4%	3.48 kg / 7.67 LBS 3479.8 g / 34.1 N
80 °C	-6.6%	3.40 kg / 7.50 LBS 3399.8 g / 33.4 N
100 °C	-28.8%	2.59 kg / 5.71 LBS 2591.7 g / 25.4 N

Standard neodymium magnets irreversibly lose parameters after exceeding the maximum temperature. Avoid high temperatures – heat can permanently damage this product. With increasing heat, the magnet's force briefly drops. Avoid using this product near heat sources exceeding its safe range. Too high temperature will cause irreversible degradation of magnetic properties.

*Technical advisory: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (low Pc) risk losing magnetic properties under lower heat stress than taller cylinders. The danger warning in the table indicates a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - field range
MP 30x7/3x3 / N38

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

Two magnetic products interact from a much further distance than a magnet and steel combination. The setup of two magnets produces a massive flux and a further horizon of action. Planning to create a solid fastener? Utilize two neodymiums instead of a neodymium and a striker plate. Be careful that when attracting two neodymiums, the pinch force is massive. The repulsion force is slightly lower than the attraction, but still significant.
*The magnetic induction in repulsion mode reaches ~0 Gs at the midpoint of the gap (resulting from vector opposition).
Note: Figures apply to sliding force of two identical magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - warnings
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
Phone / Smartphone	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

Extremely neodym field poses a large risk to electronic devices as well as pacemakers. These neodymiums produce a field that destroys function of digital equipment. Be aware: the invisible magnetic field acts through matter and glass. Special caution must be taken by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, remotes, speakers, and displays. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - warning
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

Magnetic elements are prone to chipping – a strong collision with metal causes immediate chipping. Watch the impact speed – a magnet released freely becomes dangerous. Striking energy can trigger coating fragments or painful pinches to fingers. Always hold the magnet during bringing near metal so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Use safety goggles when handling with large magnets.

Table 9: Anti-corrosion coating durability
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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (P_c)
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 passing through the pole surface. Key data in coil applications and motors. The P_c coefficient defines the working geometry.

Table 11: Submerged application
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%

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. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Sliding resistance

*Caution: On a vertical surface, the magnet retains only a fraction of its max power.

2. Steel thickness impact

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

3. Power loss vs temp

*For N38 grade, the critical limit 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

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%

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

Quick Unit Converter

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Force in kg

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MP 40x22x10 / N38 - ring magnet

40.59 ZŁ brutto / pcs

The ring-shaped magnet MP 30x7/3x3 / N38 is created for permanent mounting, where glue might fail or be insufficient. Mounting is clean and reversible, unlike gluing. This product with a force of 3.64 kg works great as a door latch, speaker holder, or mounting element in devices.

This is a crucial issue when working with model MP 30x7/3x3 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. When tightening the screw, you must maintain great sensitivity. We recommend tightening manually with a screwdriver, not an impact driver, because too much pressure will cause the ring to crack. 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. In the place of the mounting hole, the coating is thinner and easily scratched when tightening the screw, which will become a corrosion focus. This product is dedicated for indoor use. For outdoor applications, we recommend choosing magnets in hermetic housing or additional protection with varnish.

The inner hole diameter determines the maximum size of the mounting element. 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.

It is a magnetic ring with a diameter of 30 mm and thickness 3 mm. The key parameter here is the holding force amounting to approximately 3.64 kg (force ~35.69 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 7/3 mm.

The poles are located on the planes with holes, not on the sides of the ring. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Advantages and disadvantages of rare earth magnets.

Advantages

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

They retain full power for nearly ten years – the loss is just ~1% (according to analyses),
Neodymium magnets are characterized by highly resistant to demagnetization caused by external field sources,
Thanks to the glossy finish, the coating of nickel, gold, or silver gives an visually attractive appearance,
Magnetic induction on the surface of the magnet remains very high,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
Possibility of custom forming and modifying to individual requirements,
Huge importance in future technologies – they are used in hard drives, electric drive systems, diagnostic systems, as well as modern systems.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
We suggest cover - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complicated shapes.
Possible danger resulting from small fragments of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child safety. Furthermore, small components of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

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

Information about lifting capacity was determined for the most favorable conditions, assuming:

on a base made of mild steel, optimally conducting the magnetic flux
whose transverse dimension equals approx. 10 mm
with an ground touching surface
with zero gap (without paint)
for force acting at a right angle (in the magnet axis)
at room temperature

Practical lifting capacity: influencing factors

In practice, the actual holding force depends on a number of factors, listed from most significant:

Gap (betwixt the magnet and the plate), since even a very small clearance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to paint, corrosion or dirt).
Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
Metal type – different alloys attracts identically. Alloy additives worsen the attraction effect.
Surface structure – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
Temperature – heating the magnet causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

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 load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet and the plate reduces the holding force.

Precautions when working with neodymium magnets

Conscious usage

Exercise caution. Rare earth magnets act from a distance and snap with huge force, often quicker than you can react.

Pacemakers

Life threat: Strong magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.

Adults only

Always store magnets away from children. Choking hazard is high, and the effects of magnets clamping inside the body are life-threatening.

Demagnetization risk

Standard neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. The loss of strength is permanent.

Keep away from electronics

A powerful magnetic field interferes with the functioning of magnetometers in smartphones and navigation systems. Maintain magnets near a device to avoid breaking the sensors.

Allergy Warning

It is widely known that the nickel plating (the usual finish) is a common allergen. If you have an allergy, prevent direct skin contact or opt for versions in plastic housing.

Protect data

Intense magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Keep a distance of min. 10 cm.

Physical harm

Large magnets can smash fingers in a fraction of a second. Do not put your hand betwixt two attracting surfaces.

Magnets are brittle

Beware of splinters. Magnets can explode upon violent connection, launching shards into the air. Eye protection is mandatory.

Machining danger

Machining of neodymium magnets poses a fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

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

MP 30x7/3x3 / N38 - ring magnet

Technical parameters of the product - MP 30x7/3x3 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the assembly - report

Table 1: Static pull force (force vs distance) - power drop MP 30x7/3x3 / N38

Table 2: Slippage force (vertical surface) MP 30x7/3x3 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MP 30x7/3x3 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MP 30x7/3x3 / N38

Table 5: Thermal stability (material behavior) - resistance threshold MP 30x7/3x3 / N38

Table 6: Two magnets (repulsion) - field range MP 30x7/3x3 / N38

Table 7: Hazards (electronics) - warnings MP 30x7/3x3 / N38

Table 8: Dynamics (kinetic energy) - warning MP 30x7/3x3 / N38

Table 9: Anti-corrosion coating durability MP 30x7/3x3 / N38

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

Table 11: Submerged application MP 30x7/3x3 / N38

1. Sliding resistance

2. Steel thickness impact

3. Power loss vs temp

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

Elemental analysis

Ecology and recycling (GPSR)

Force (pull)

Field Strength

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Advantages and disadvantages of rare earth magnets.

Advantages

Limitations

Pull force analysis

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

Practical lifting capacity: influencing factors

Precautions when working with neodymium magnets

Conscious usage

Pacemakers

Adults only

Demagnetization risk

Keep away from electronics

Allergy Warning

Protect data

Physical harm

Magnets are brittle

Machining danger

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - power drop
MP 30x7/3x3 / N38

Table 2: Slippage force (vertical surface)
MP 30x7/3x3 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MP 30x7/3x3 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MP 30x7/3x3 / N38

Table 5: Thermal stability (material behavior) - resistance threshold
MP 30x7/3x3 / N38

Table 6: Two magnets (repulsion) - field range
MP 30x7/3x3 / N38

Table 7: Hazards (electronics) - warnings
MP 30x7/3x3 / N38

Table 8: Dynamics (kinetic energy) - warning
MP 30x7/3x3 / N38

Table 9: Anti-corrosion coating durability
MP 30x7/3x3 / N38

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

Table 11: Submerged application
MP 30x7/3x3 / N38