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MP 25x7x9 / 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 030195

GTIN/EAN: 5906301812128

5.00

Diameter

25 mm [±0,1 mm]

internal diameter Ø

7 mm [±0,1 mm]

Height

9 mm [±0,1 mm]

Weight

30.54 g

Magnetization Direction

↑ axial

Load capacity

14.82 kg / 145.39 N

Magnetic Induction

362.13 mT / 3621 Gs

Coating

[NiCuNi] Nickel

technical specifications »

12.55 ZŁ with VAT / pcs + price for transport

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Call us +48 22 499 98 98 otherwise contact us by means of our online form the contact section.
Lifting power along with appearance of a neodymium magnet can be reviewed using our power calculator.

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Product card - MP 25x7x9 / N38 - ring magnet

Specification / characteristics - MP 25x7x9 / N38 - ring magnet

properties

properties	values
Cat. no.	030195
GTIN/EAN	5906301812128
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	25 mm [±0,1 mm]
internal diameter Ø	7 mm [±0,1 mm]
Height	9 mm [±0,1 mm]
Weight	30.54 g
Magnetization Direction	↑ axial
Load capacity ~ ?	14.82 kg / 145.39 N
Magnetic Induction ~ ?	362.13 mT / 3621 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 25x7x9 / 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

Technical simulation of the product - technical parameters

These values represent the outcome of a engineering analysis. Results are based on models for the material Nd₂Fe₁₄B. Operational parameters might slightly deviate from the simulation results. Please consider these calculations as a reference point for designers.

Table 1: Static force (pull vs gap) - power drop
MP 25x7x9 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5777 Gs 577.7 mT	14.82 kg / 32.67 lbs 14820.0 g / 145.4 N	crushing
1 mm	5310 Gs 531.0 mT	12.52 kg / 27.60 lbs 12519.6 g / 122.8 N	crushing
2 mm	4846 Gs 484.6 mT	10.43 kg / 22.98 lbs 10425.5 g / 102.3 N	crushing
3 mm	4397 Gs 439.7 mT	8.59 kg / 18.93 lbs 8586.1 g / 84.2 N	warning
5 mm	3576 Gs 357.6 mT	5.68 kg / 12.52 lbs 5678.0 g / 55.7 N	warning
10 mm	2073 Gs 207.3 mT	1.91 kg / 4.21 lbs 1907.5 g / 18.7 N	low risk
15 mm	1231 Gs 123.1 mT	0.67 kg / 1.48 lbs 673.1 g / 6.6 N	low risk
20 mm	773 Gs 77.3 mT	0.27 kg / 0.58 lbs 265.0 g / 2.6 N	low risk
30 mm	356 Gs 35.6 mT	0.06 kg / 0.12 lbs 56.2 g / 0.6 N	low risk
50 mm	115 Gs 11.5 mT	0.01 kg / 0.01 lbs 5.9 g / 0.1 N	low risk

Magnetic force weakens significantly with every subsequent millimeter of gap. Keep in mind that even the smallest gap (e.g., dirt, paint, veneer) significantly weakens the grip. Magnets operate strongest during direct contact; gap weakens the power. Analyze how quickly the parameters fall, when the magnet does not adhere tightly to the metal substrate. When designing the assembly, eliminate redundant distances.

Table 2: Shear capacity (vertical surface)
MP 25x7x9 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.96 kg / 6.53 lbs 2964.0 g / 29.1 N
1 mm	Stal (~0.2)	2.50 kg / 5.52 lbs 2504.0 g / 24.6 N
2 mm	Stal (~0.2)	2.09 kg / 4.60 lbs 2086.0 g / 20.5 N
3 mm	Stal (~0.2)	1.72 kg / 3.79 lbs 1718.0 g / 16.9 N
5 mm	Stal (~0.2)	1.14 kg / 2.50 lbs 1136.0 g / 11.1 N
10 mm	Stal (~0.2)	0.38 kg / 0.84 lbs 382.0 g / 3.7 N
15 mm	Stal (~0.2)	0.13 kg / 0.30 lbs 134.0 g / 1.3 N
20 mm	Stal (~0.2)	0.05 kg / 0.12 lbs 54.0 g / 0.5 N
30 mm	Stal (~0.2)	0.01 kg / 0.03 lbs 12.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 g / 0.0 N

The following data calculates the theoretical holding capacity necessary to start the shifting of the magnet vertically against a upright metal surface (considering typical friction coefficient). The holding force is relative to the air gap between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MP 25x7x9 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	4.45 kg / 9.80 lbs 4446.0 g / 43.6 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.96 kg / 6.53 lbs 2964.0 g / 29.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.48 kg / 3.27 lbs 1482.0 g / 14.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	7.41 kg / 16.34 lbs 7410.0 g / 72.7 N

When hanging a magnet on a upright plane (e.g., a fridge), it will only hold only approx. 20%-30% of its nominal power. Gravitational force as well as a low friction coefficient cause that magnets move down faster than they pull off. Planning a hanger? Consider that the sliding force is significantly lower than the maximum static pull force. On a smooth steel, the element will give way down under a significantly smaller load. Utilizing a rubberized coating can effectively increase the grip.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 25x7x9 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.74 kg / 1.63 lbs 741.0 g / 7.3 N
1 mm	13%	1.85 kg / 4.08 lbs 1852.5 g / 18.2 N
2 mm	25%	3.71 kg / 8.17 lbs 3705.0 g / 36.3 N
3 mm	38%	5.56 kg / 12.25 lbs 5557.5 g / 54.5 N
5 mm	63%	9.26 kg / 20.42 lbs 9262.5 g / 90.9 N
10 mm	100%	14.82 kg / 32.67 lbs 14820.0 g / 145.4 N
11 mm	100%	14.82 kg / 32.67 lbs 14820.0 g / 145.4 N
12 mm	100%	14.82 kg / 32.67 lbs 14820.0 g / 145.4 N

A thin sheet is incapable of focus the full magnetic flux, which weakens actual performance of the holder. Should you mount a strong magnet to a weak sheet, the field will penetrate right through and the attraction force will be weaker. To squeeze full efficiency of this neodymium's power, you need a suitably thick element of metal. The saturation effect means that on delicate walls (e.g., thin profiles), the product works worse. We suggest choosing the steel cross-section from these parameters.

Table 5: Working in heat (material behavior) - thermal limit
MP 25x7x9 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	14.82 kg / 32.67 lbs 14820.0 g / 145.4 N	OK
40 °C	-2.2%	14.49 kg / 31.95 lbs 14494.0 g / 142.2 N	OK
60 °C	-4.4%	14.17 kg / 31.23 lbs 14167.9 g / 139.0 N	OK
80 °C	-6.6%	13.84 kg / 30.52 lbs 13841.9 g / 135.8 N
100 °C	-28.8%	10.55 kg / 23.26 lbs 10551.8 g / 103.5 N

Standard neodymium magnets lose strength after exceeding the maximum temperature. Watch out for overheating – high temperature can irreversibly destroy this product. As the temperature rises, the magnet's power temporarily decreases. Avoid using this magnet in hot environments exceeding its safe range. Ignoring the limit will lead to permanent loss of magnetism.

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

Table 6: Two magnets (repulsion) - field collision
MP 25x7x9 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	74.73 kg / 164.76 lbs 6 082 Gs	11.21 kg / 24.71 lbs 11210 g / 110.0 N	N/A
1 mm	68.86 kg / 151.81 lbs 11 091 Gs	10.33 kg / 22.77 lbs 10329 g / 101.3 N	61.97 kg / 136.63 lbs ~0 Gs
2 mm	63.13 kg / 139.18 lbs 10 620 Gs	9.47 kg / 20.88 lbs 9470 g / 92.9 N	56.82 kg / 125.26 lbs ~0 Gs
3 mm	57.70 kg / 127.20 lbs 10 153 Gs	8.65 kg / 19.08 lbs 8654 g / 84.9 N	51.93 kg / 114.48 lbs ~0 Gs
5 mm	47.77 kg / 105.31 lbs 9 238 Gs	7.17 kg / 15.80 lbs 7165 g / 70.3 N	42.99 kg / 94.78 lbs ~0 Gs
10 mm	28.63 kg / 63.12 lbs 7 152 Gs	4.29 kg / 9.47 lbs 4295 g / 42.1 N	25.77 kg / 56.81 lbs ~0 Gs
20 mm	9.62 kg / 21.21 lbs 4 145 Gs	1.44 kg / 3.18 lbs 1443 g / 14.2 N	8.66 kg / 19.09 lbs ~0 Gs
50 mm	0.59 kg / 1.29 lbs 1 024 Gs	0.09 kg / 0.19 lbs 88 g / 0.9 N	0.53 kg / 1.16 lbs ~0 Gs
60 mm	0.28 kg / 0.62 lbs 712 Gs	0.04 kg / 0.09 lbs 43 g / 0.4 N	0.26 kg / 0.56 lbs ~0 Gs
70 mm	0.15 kg / 0.33 lbs 514 Gs	0.02 kg / 0.05 lbs 22 g / 0.2 N	0.13 kg / 0.29 lbs ~0 Gs
80 mm	0.08 kg / 0.18 lbs 383 Gs	0.01 kg / 0.03 lbs 12 g / 0.1 N	0.07 kg / 0.16 lbs ~0 Gs
90 mm	0.05 kg / 0.11 lbs 293 Gs	0.01 kg / 0.02 lbs 7 g / 0.1 N	0.04 kg / 0.10 lbs ~0 Gs
100 mm	0.03 kg / 0.07 lbs 230 Gs	0.00 kg / 0.01 lbs 4 g / 0.0 N	0.03 kg / 0.06 lbs ~0 Gs

Two magnets interact from a much further distance than a magnet and steel combination. The connection of two magnets produces a massive flux and a further horizon of action. Planning to create a strong closure? Utilize two neodymiums instead of one magnet and a steel. Exercise caution that when bringing together two magnets, the collision energy is huge. The repulsion force is marginally weaker than the attraction, but still impressive.
*Field value for N-N configuration reaches ~0 Gs at the midpoint of the gap (due to field cancellation).
Attention: Figures demonstrate shear force of dual identical neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - warnings
MP 25x7x9 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	17.0 cm
Hearing aid	10 Gs (1.0 mT)	13.5 cm
Timepiece	20 Gs (2.0 mT)	10.5 cm
Mobile device	40 Gs (4.0 mT)	8.0 cm
Car key	50 Gs (5.0 mT)	7.5 cm
Payment card	400 Gs (40.0 mT)	3.0 cm
HDD hard drive	600 Gs (60.0 mT)	2.5 cm

Powerful magnet radiation is a serious hazard to IT equipment and medical implants. These neodymiums generate a field that prevents correct functioning of digital equipment. Notice: the unseen radiation passes through tissues and glass. Increased vigilance must be exercised by people with hearing aids and drug dispensers. Influence will be felt by: mechanical watches, remotes, membranes, and displays. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - collision effects
MP 25x7x9 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	23.94 km/h (6.65 m/s)	0.68 J
30 mm	38.57 km/h (10.71 m/s)	1.75 J
50 mm	49.69 km/h (13.80 m/s)	2.91 J
100 mm	70.25 km/h (19.52 m/s)	5.82 J

Magnetic elements are very brittle – a violent impact against metal risks their cracking. Pay attention to connection velocity – a magnet released freely turns into a projectile. Striking energy can cause material chips or painful pinches to fingers. Hold the magnet firmly during installation so it doesn't hit violently against the metal. A collision at high speed almost guarantees destruction of the neodymium. Wear eye protection when working with large magnets.

Table 9: Coating parameters (durability)
MP 25x7x9 / 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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MP 25x7x9 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	22 495 Mx	225.0 µWb
P_c Coefficient	1.05	High (Stable)

Flux value passing through the magnet pole. Essential parameter when building generators as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Submerged application
MP 25x7x9 / N38

Environment	Effective steel pull	Effect
Air (land)	14.82 kg	Standard
Water (riverbed)	16.97 kg (+2.15 kg buoyancy gain)	+14.5%

Rust risk: 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. However, remember the water resistance when pulling the rope quickly.

1. Shear force

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

2. Efficiency vs thickness

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

3. Temperature resistance

*For N38 grade, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.05

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.

Engineering data and GPSR

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: 030195-2026

Magnet Unit Converter

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Kilograms (kg)

Force in lbs

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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. This product with a force of 14.82 kg works great as a door latch, speaker holder, or spacer element in devices.

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. The flat screw head should evenly press the magnet. 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 magnets in hermetic housing or additional protection with varnish.

A screw or bolt with a thread diameter smaller than 7 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 Ø25 mm (outer diameter) and height 9 mm. The key parameter here is the holding force amounting to approximately 14.82 kg (force ~145.39 N). The mounting hole diameter is precisely 7 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. We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Strengths

Apart from their strong magnetism, neodymium magnets have these key benefits:

They have constant strength, and over nearly 10 years their performance decreases symbolically – ~1% (in testing),
They possess excellent resistance to magnetism drop as a result of opposing magnetic fields,
Thanks to the reflective finish, the coating of Ni-Cu-Ni, gold-plated, or silver gives an aesthetic appearance,
Magnetic induction on the working part of the magnet remains maximum,
Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
Possibility of exact forming and adjusting to concrete applications,
Universal use in modern industrial fields – they are commonly used in data components, brushless drives, medical devices, as well as industrial machines.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Problematic aspects of neodymium magnets: tips and applications.

They are prone to damage upon too strong 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
When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as 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 and corrosion.
Due to limitations in producing threads and complicated forms in magnets, we recommend using casing - magnetic mount.
Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child safety. It is also worth noting that small components of these products can disrupt the diagnostic process medical when they are in the body.
With large orders the cost of neodymium magnets can be a barrier,

Pull force analysis

Maximum magnetic pulling force – what it depends on?

The specified lifting capacity represents the limit force, measured under ideal test conditions, specifically:

on a base made of mild steel, effectively closing the magnetic field
whose transverse dimension reaches at least 10 mm
with a surface perfectly flat
under conditions of no distance (surface-to-surface)
for force acting at a right angle (pull-off, not shear)
in temp. approx. 20°C

Magnet lifting force in use – key factors

Bear in mind that the magnet holding may be lower influenced by elements below, starting with the most relevant:

Gap (between the magnet and the metal), because even a tiny distance (e.g. 0.5 mm) results in a reduction in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
Loading method – catalog parameter refers to detachment vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
Material composition – different alloys reacts the same. Alloy additives worsen the attraction effect.
Surface quality – the more even the plate, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was determined with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, whereas under shearing force the lifting capacity is smaller. Moreover, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.

H&S for magnets

Skin irritation risks

Medical facts indicate that the nickel plating (the usual finish) is a potent allergen. If you have an allergy, avoid touching magnets with bare hands and choose coated magnets.

Power loss in heat

Regular neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.

Dust is flammable

Drilling and cutting of neodymium magnets carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Handling rules

Before starting, read the rules. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.

Pinching danger

Danger of trauma: The attraction force is so great that it can result in hematomas, crushing, and broken bones. Protective gloves are recommended.

Risk of cracking

Neodymium magnets are sintered ceramics, meaning they are very brittle. Collision of two magnets will cause them cracking into small pieces.

Health Danger

Medical warning: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.

Cards and drives

Data protection: Strong magnets can damage data carriers and delicate electronics (heart implants, hearing aids, timepieces).

Do not give to children

Product intended for adults. Tiny parts pose a choking risk, causing intestinal necrosis. Store away from kids and pets.

GPS Danger

Navigation devices and mobile phones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Important! Details about hazards in the article: Safety of working with magnets.

MP 25x7x9 / N38 - ring magnet

Product card - MP 25x7x9 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the product - technical parameters

Table 1: Static force (pull vs gap) - power drop MP 25x7x9 / N38

Table 2: Shear capacity (vertical surface) MP 25x7x9 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MP 25x7x9 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MP 25x7x9 / N38

Table 5: Working in heat (material behavior) - thermal limit MP 25x7x9 / N38

Table 6: Two magnets (repulsion) - field collision MP 25x7x9 / N38

Table 7: Protective zones (implants) - warnings MP 25x7x9 / N38

Table 8: Dynamics (cracking risk) - collision effects MP 25x7x9 / N38

Table 9: Coating parameters (durability) MP 25x7x9 / N38

Table 10: Construction data (Flux) MP 25x7x9 / N38

Table 11: Submerged application MP 25x7x9 / N38

1. Shear force

2. Efficiency vs thickness

3. Temperature resistance

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

Chemical composition

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

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Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

Disadvantages

Pull force analysis

Maximum magnetic pulling force – what it depends on?

Magnet lifting force in use – key factors

H&S for magnets

Skin irritation risks

Power loss in heat

Dust is flammable

Handling rules

Pinching danger

Risk of cracking

Health Danger

Cards and drives

Do not give to children

GPS Danger

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - power drop
MP 25x7x9 / N38

Table 2: Shear capacity (vertical surface)
MP 25x7x9 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MP 25x7x9 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 25x7x9 / N38

Table 5: Working in heat (material behavior) - thermal limit
MP 25x7x9 / N38

Table 6: Two magnets (repulsion) - field collision
MP 25x7x9 / N38

Table 7: Protective zones (implants) - warnings
MP 25x7x9 / N38

Table 8: Dynamics (cracking risk) - collision effects
MP 25x7x9 / N38

Table 9: Coating parameters (durability)
MP 25x7x9 / N38

Table 10: Construction data (Flux)
MP 25x7x9 / N38

Table 11: Submerged application
MP 25x7x9 / N38

Advantages and disadvantages of Nd₂Fe₁₄B magnets.