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MP 25x5x27 / 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 030192

GTIN/EAN: 5906301812098

5.00

Diameter

25 mm [±0,1 mm]

internal diameter Ø

5 mm [±0,1 mm]

Height

27 mm [±0,1 mm]

Weight

95.43 g

Magnetization Direction

↑ axial

Load capacity

18.51 kg / 181.54 N

Magnetic Induction

562.34 mT / 5623 Gs

Coating

[NiCuNi] Nickel

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47.18 ZŁ with VAT / pcs + price for transport

38.36 ZŁ net + 23% VAT / pcs

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Physical properties - MP 25x5x27 / N38 - ring magnet

Specification / characteristics - MP 25x5x27 / N38 - ring magnet

properties

properties	values
Cat. no.	030192
GTIN/EAN	5906301812098
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	5 mm [±0,1 mm]
Height	27 mm [±0,1 mm]
Weight	95.43 g
Magnetization Direction	↑ axial
Load capacity ~ ?	18.51 kg / 181.54 N
Magnetic Induction ~ ?	562.34 mT / 5623 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 25x5x27 / 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 magnet - technical parameters

These data constitute the outcome of a mathematical simulation. Values were calculated on models for the material Nd₂Fe₁₄B. Operational parameters might slightly deviate from the simulation results. Treat these calculations as a supplementary guide for designers.

Table 1: Static pull force (force vs distance) - power drop
MP 25x5x27 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5716 Gs 571.6 mT	18.51 kg / 40.81 LBS 18510.0 g / 181.6 N	crushing
1 mm	5288 Gs 528.8 mT	15.84 kg / 34.92 LBS 15839.8 g / 155.4 N	crushing
2 mm	4861 Gs 486.1 mT	13.38 kg / 29.51 LBS 13384.0 g / 131.3 N	crushing
3 mm	4446 Gs 444.6 mT	11.20 kg / 24.69 LBS 11198.0 g / 109.9 N	crushing
5 mm	3677 Gs 367.7 mT	7.66 kg / 16.88 LBS 7657.5 g / 75.1 N	warning
10 mm	2216 Gs 221.6 mT	2.78 kg / 6.13 LBS 2782.1 g / 27.3 N	warning
15 mm	1354 Gs 135.4 mT	1.04 kg / 2.29 LBS 1037.8 g / 10.2 N	safe
20 mm	864 Gs 86.4 mT	0.42 kg / 0.93 LBS 423.3 g / 4.2 N	safe
30 mm	405 Gs 40.5 mT	0.09 kg / 0.21 LBS 93.1 g / 0.9 N	safe
50 mm	133 Gs 13.3 mT	0.01 kg / 0.02 LBS 10.0 g / 0.1 N	safe

Grip strength weakens sharply per each millimeter of spacing. Remember that even a very thin break (e.g., dirt, paint, veneer) strongly weakens the grip. Magnets operate strongest during direct contact; distance kills the power. Analyze how rapidly the pull force plummet, when the product does not adhere tightly to the metal substrate. When planning the mounting, discard additional spacers.

Table 2: Vertical force (wall)
MP 25x5x27 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	3.70 kg / 8.16 LBS 3702.0 g / 36.3 N
1 mm	Stal (~0.2)	3.17 kg / 6.98 LBS 3168.0 g / 31.1 N
2 mm	Stal (~0.2)	2.68 kg / 5.90 LBS 2676.0 g / 26.3 N
3 mm	Stal (~0.2)	2.24 kg / 4.94 LBS 2240.0 g / 22.0 N
5 mm	Stal (~0.2)	1.53 kg / 3.38 LBS 1532.0 g / 15.0 N
10 mm	Stal (~0.2)	0.56 kg / 1.23 LBS 556.0 g / 5.5 N
15 mm	Stal (~0.2)	0.21 kg / 0.46 LBS 208.0 g / 2.0 N
20 mm	Stal (~0.2)	0.08 kg / 0.19 LBS 84.0 g / 0.8 N
30 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 18.0 g / 0.2 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N

This section presents the estimated holding capacity necessary to cause the slippage of the magnet vertically on a upright steel wall (considering typical friction). This parameter is relative to the gap size between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MP 25x5x27 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	5.55 kg / 12.24 LBS 5553.0 g / 54.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	3.70 kg / 8.16 LBS 3702.0 g / 36.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.85 kg / 4.08 LBS 1851.0 g / 18.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	9.26 kg / 20.40 LBS 9255.0 g / 90.8 N

When mounting a holder on a upright wall (e.g., a car body), it will only hold only about 1/5 of its maximum pull force. Gravity as well as a low friction coefficient mean that holders move down faster than they pull off. Planning a vertical fastening? Remember that the sliding force is significantly lower than the perpendicular breakaway force. On a slippery surface, the holder will give way down under a significantly smaller weight. Using a rubber layer can drastically raise the stability.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 25x5x27 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.93 kg / 2.04 LBS 925.5 g / 9.1 N
1 mm	13%	2.31 kg / 5.10 LBS 2313.8 g / 22.7 N
2 mm	25%	4.63 kg / 10.20 LBS 4627.5 g / 45.4 N
3 mm	38%	6.94 kg / 15.30 LBS 6941.3 g / 68.1 N
5 mm	63%	11.57 kg / 25.50 LBS 11568.8 g / 113.5 N
10 mm	100%	18.51 kg / 40.81 LBS 18510.0 g / 181.6 N
11 mm	100%	18.51 kg / 40.81 LBS 18510.0 g / 181.6 N
12 mm	100%	18.51 kg / 40.81 LBS 18510.0 g / 181.6 N

A thin sheet is incapable of take in the entire magnetic field, which weakens actual performance of the magnet. If you attach a powerful product to a thin surface, the flux will penetrate right through and the attraction force will be weaker. To achieve 100% of this neodymium's potential, you require a sufficiently solid element of metal. The material oversaturation causes that on thin elements (e.g., thin profiles), the holder works worse. We suggest choosing the steel dimension according to the table below.

Table 5: Working in heat (material behavior) - resistance threshold
MP 25x5x27 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	18.51 kg / 40.81 LBS 18510.0 g / 181.6 N	OK
40 °C	-2.2%	18.10 kg / 39.91 LBS 18102.8 g / 177.6 N	OK
60 °C	-4.4%	17.70 kg / 39.01 LBS 17695.6 g / 173.6 N	OK
80 °C	-6.6%	17.29 kg / 38.11 LBS 17288.3 g / 169.6 N
100 °C	-28.8%	13.18 kg / 29.05 LBS 13179.1 g / 129.3 N

Ordinary NdFeB products lose power above the temperature limit. Protect against heat – excessive heat can irreversibly damage this magnet. As the temperature rises, the magnet's power momentarily decreases. Avoid using this product close to heaters exceeding its safe range. Exceeding the critical threshold will result in irreversible degradation of magnetism.

*Important note: Thermal stability is determined by both grade, but also on the magnet's shape. Low-profile magnets (low Pc) may lose charge permanently sooner than long magnets. Warning indicator in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field collision
MP 25x5x27 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	13.99 kg / 30.83 LBS 6 064 Gs	2.10 kg / 4.62 LBS 2098 g / 20.6 N	N/A
1 mm	12.97 kg / 28.59 LBS 11 008 Gs	1.94 kg / 4.29 LBS 1945 g / 19.1 N	11.67 kg / 25.73 LBS ~0 Gs
2 mm	11.97 kg / 26.39 LBS 10 576 Gs	1.80 kg / 3.96 LBS 1795 g / 17.6 N	10.77 kg / 23.75 LBS ~0 Gs
3 mm	11.02 kg / 24.29 LBS 10 146 Gs	1.65 kg / 3.64 LBS 1652 g / 16.2 N	9.91 kg / 21.86 LBS ~0 Gs
5 mm	9.26 kg / 20.42 LBS 9 303 Gs	1.39 kg / 3.06 LBS 1389 g / 13.6 N	8.33 kg / 18.37 LBS ~0 Gs
10 mm	5.79 kg / 12.76 LBS 7 353 Gs	0.87 kg / 1.91 LBS 868 g / 8.5 N	5.21 kg / 11.48 LBS ~0 Gs
20 mm	2.10 kg / 4.63 LBS 4 432 Gs	0.32 kg / 0.70 LBS 315 g / 3.1 N	1.89 kg / 4.17 LBS ~0 Gs
50 mm	0.14 kg / 0.32 LBS 1 159 Gs	0.02 kg / 0.05 LBS 22 g / 0.2 N	0.13 kg / 0.29 LBS ~0 Gs
60 mm	0.07 kg / 0.16 LBS 811 Gs	0.01 kg / 0.02 LBS 11 g / 0.1 N	0.06 kg / 0.14 LBS ~0 Gs
70 mm	0.04 kg / 0.08 LBS 589 Gs	0.01 kg / 0.01 LBS 6 g / 0.1 N	0.03 kg / 0.07 LBS ~0 Gs
80 mm	0.02 kg / 0.05 LBS 440 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.04 LBS ~0 Gs
90 mm	0.01 kg / 0.03 LBS 338 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.02 LBS ~0 Gs
100 mm	0.01 kg / 0.02 LBS 265 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnetic products attract each other from a wider radius than a magnet and steel combination. The setup of magnet-to-magnet produces a massive flux and a further horizon of action. Designing a solid fastener? Apply two magnets instead of one magnet and a striker plate. Be careful that when bringing together two magnets, the pinch force is massive. The repulsion force is marginally weaker than the connection force, but still impressive.
*The magnetic induction between like poles is approximately ~0 Gs in the exact middle of the gap (caused by magnetic field nullification).
Important: Figures refer to sliding force of dual matching neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - warnings
MP 25x5x27 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	18.0 cm
Hearing aid	10 Gs (1.0 mT)	14.0 cm
Timepiece	20 Gs (2.0 mT)	11.0 cm
Mobile device	40 Gs (4.0 mT)	8.5 cm
Car key	50 Gs (5.0 mT)	7.5 cm
Payment card	400 Gs (40.0 mT)	3.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.5 cm

Powerful magnet radiation is a serious hazard to electronic devices and pacemakers. These magnets produce a flux that destroys function of digital equipment. Remember: the unseen radiation penetrates the body and glass. Exceptional care must be taken by people with hearing aids and insulin pumps. The risk also applies to: automatic timepieces, remotes, membranes, and screens. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MP 25x5x27 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	15.31 km/h (4.25 m/s)	0.86 J
30 mm	24.40 km/h (6.78 m/s)	2.19 J
50 mm	31.42 km/h (8.73 m/s)	3.63 J
100 mm	44.42 km/h (12.34 m/s)	7.26 J

NdFeB products are prone to chipping – a strong collision with metal risks their cracking. Pay attention to connection velocity – a magnet released freely speeds with massive force. Kinetic force can cause material chips or injury to fingers. Be sure to control the product during mounting so it doesn't hit with great force against the steel surface. A collision at high speed almost guarantees destruction of the magnet. Wear safety glasses when playing with powerful specimens.

Table 9: Corrosion resistance
MP 25x5x27 / 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 25x5x27 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	4 917 Mx	49.2 µWb
P_c Coefficient	1.40	High (Stable)

Flux value emitted by the pole surface. Essential parameter for generator designers and motors. P_c value determines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MP 25x5x27 / N38

Environment	Effective steel pull	Effect
Air (land)	18.51 kg	Standard
Water (riverbed)	21.19 kg (+2.68 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. Sliding resistance

*Warning: On a vertical surface, the magnet holds just a fraction of its perpendicular strength.

2. Plate thickness effect

*Thin metal sheet (e.g. 0.5mm PC case) severely reduces the holding force.

3. Heat tolerance

*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) = 1.40

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 and environmental data

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%

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: 030192-2026

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The ring-shaped magnet MP 25x5x27 / N38 is created for permanent mounting, where glue might fail or be insufficient. 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. 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 can be damaged when tightening the screw, which will become a corrosion focus. This product is dedicated for inside building use. For outdoor applications, we recommend choosing rubberized holders or additional protection with varnish.

The inner hole diameter determines the maximum size of the mounting element. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Always check that the screw head is not larger than the outer diameter of the magnet (25 mm), so it doesn't protrude beyond the outline.

The presented product is a ring magnet with dimensions Ø25 mm (outer diameter) and height 27 mm. The key parameter here is the holding force amounting to approximately 18.51 kg (force ~181.54 N). The mounting hole diameter is precisely 5 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. In the case of connecting two rings, make sure one is turned the right way. When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Strengths and weaknesses of Nd₂Fe₁₄B magnets.

Pros

Apart from their notable power, neodymium magnets have these key benefits:

They have stable power, and over around ten years their performance decreases symbolically – ~1% (according to theory),
They are noted for resistance to demagnetization induced by external disturbances,
By using a reflective coating of silver, the element acquires an professional look,
Magnets exhibit extremely high magnetic induction on the working surface,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
Thanks to versatility in designing and the ability to customize to complex applications,
Versatile presence in modern industrial fields – they are commonly used in hard drives, electric motors, medical equipment, as well as industrial machines.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Weaknesses

Drawbacks and weaknesses of neodymium magnets: tips and applications.

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
Neodymium magnets lose their power 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 durability even at temperatures up to 230°C
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
Due to limitations in creating nuts and complicated forms in magnets, we recommend using cover - magnetic mechanism.
Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child safety. Additionally, tiny parts of these products can complicate diagnosis medical in case of swallowing.
With mass production the cost of neodymium magnets can be a barrier,

Lifting parameters

Magnetic strength at its maximum – what it depends on?

The specified lifting capacity concerns the peak performance, obtained under optimal environment, namely:

with the application of a yoke made of special test steel, guaranteeing maximum field concentration
whose thickness reaches at least 10 mm
with an ideally smooth contact surface
with total lack of distance (no impurities)
for force applied at a right angle (in the magnet axis)
in neutral thermal conditions

Impact of factors on magnetic holding capacity in practice

Bear in mind that the application force will differ influenced by elements below, starting with the most relevant:

Distance (between the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) results in a drastic drop in lifting capacity by up to 50% (this also applies to paint, corrosion or debris).
Load vector – highest force is available only during perpendicular pulling. The force required to slide of the magnet along the plate is standardly several times lower (approx. 1/5 of the lifting capacity).
Steel thickness – insufficiently thick sheet does not accept the full field, causing part of the flux to be lost into the air.
Material type – ideal substrate is high-permeability steel. Hardened steels may generate lower lifting capacity.
Smoothness – full contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Thermal conditions – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under perpendicular forces, however under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate reduces the holding force.

Precautions when working with neodymium magnets

Beware of splinters

Despite the nickel coating, the material is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Powerful field

Handle magnets consciously. Their powerful strength can surprise even professionals. Be vigilant and do not underestimate their force.

Danger to pacemakers

People with a heart stimulator have to maintain an large gap from magnets. The magnetic field can stop the functioning of the implant.

Impact on smartphones

An intense magnetic field interferes with the functioning of magnetometers in smartphones and GPS navigation. Maintain magnets near a device to avoid damaging the sensors.

Flammability

Dust created during machining of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Heat sensitivity

Monitor thermal conditions. Exposing the magnet to high heat will destroy its properties and pulling force.

Adults only

These products are not toys. Swallowing multiple magnets may result in them pinching intestinal walls, which poses a severe health hazard and necessitates urgent medical intervention.

Bodily injuries

Danger of trauma: The pulling power is so immense that it can result in hematomas, pinching, and even bone fractures. Use thick gloves.

Keep away from computers

Intense magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Keep a distance of min. 10 cm.

Sensitization to coating

Nickel alert: The nickel-copper-nickel coating consists of nickel. If an allergic reaction happens, cease handling magnets and wear gloves.

Attention! Learn more about risks in the article: Safety of working with magnets.

MP 25x5x27 / N38 - ring magnet

Physical properties - MP 25x5x27 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the magnet - technical parameters

Table 1: Static pull force (force vs distance) - power drop MP 25x5x27 / N38

Table 2: Vertical force (wall) MP 25x5x27 / N38

Table 3: Vertical assembly (sliding) - vertical pull MP 25x5x27 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MP 25x5x27 / N38

Table 5: Working in heat (material behavior) - resistance threshold MP 25x5x27 / N38

Table 6: Two magnets (repulsion) - field collision MP 25x5x27 / N38

Table 7: Protective zones (electronics) - warnings MP 25x5x27 / N38

Table 8: Impact energy (kinetic energy) - warning MP 25x5x27 / N38

Table 9: Corrosion resistance MP 25x5x27 / N38

Table 10: Construction data (Pc) MP 25x5x27 / N38

Table 11: Hydrostatics and buoyancy MP 25x5x27 / N38

1. Sliding resistance

2. Plate thickness effect

3. Heat tolerance

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

Material specification

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Field

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Strengths and weaknesses of Nd2Fe14B magnets.

Pros

Weaknesses

Lifting parameters

Magnetic strength at its maximum – what it depends on?

Impact of factors on magnetic holding capacity in practice

Precautions when working with neodymium magnets

Beware of splinters

Powerful field

Danger to pacemakers

Impact on smartphones

Flammability

Heat sensitivity

Adults only

Bodily injuries

Keep away from computers

Sensitization to coating

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - power drop
MP 25x5x27 / N38

Table 2: Vertical force (wall)
MP 25x5x27 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MP 25x5x27 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 25x5x27 / N38

Table 5: Working in heat (material behavior) - resistance threshold
MP 25x5x27 / N38

Table 6: Two magnets (repulsion) - field collision
MP 25x5x27 / N38

Table 7: Protective zones (electronics) - warnings
MP 25x5x27 / N38

Table 8: Impact energy (kinetic energy) - warning
MP 25x5x27 / N38

Table 9: Corrosion resistance
MP 25x5x27 / N38

Table 10: Construction data (P_c)
MP 25x5x27 / N38

Table 11: Hydrostatics and buoyancy
MP 25x5x27 / N38

Strengths and weaknesses of Nd₂Fe₁₄B magnets.