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MP 15x7/3.5x3 / N38 - ring magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN
Rating: 5

ring magnet

Catalog no 030182

GTIN/EAN: 5906301811992

5.00

Diameter

15 mm [±0,1 mm]

internal diameter Ø

7/3.5 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

3.76 g

Magnetization Direction

↑ axial

Load capacity

2.71 kg / 26.61 N

Magnetic Induction

230.16 mT / 2302 Gs

Coating

[NiCuNi] Nickel

see properties »

1.747 ZŁ with VAT / pcs + price for transport

1.420 ZŁ net + 23% VAT / pcs

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Technical of the product - MP 15x7/3.5x3 / N38 - ring magnet

Specification / characteristics - MP 15x7/3.5x3 / N38 - ring magnet

properties

properties	values
Cat. no.	030182
GTIN/EAN	5906301811992
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	15 mm [±0,1 mm]
internal diameter Ø	7/3.5 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	3.76 g
Magnetization Direction	↑ axial
Load capacity ~ ?	2.71 kg / 26.61 N
Magnetic Induction ~ ?	230.16 mT / 2302 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 15x7/3.5x3 / 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 modeling of the product - data

These data constitute the outcome of a mathematical simulation. Results rely on algorithms for the class Nd₂Fe₁₄B. Operational performance might slightly differ from theoretical values. Treat these data as a preliminary roadmap when designing systems.

Table 1: Static pull force (pull vs distance) - power drop
MP 15x7/3.5x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1995 Gs 199.5 mT	2.71 kg / 5.97 LBS 2710.0 g / 26.6 N	warning
1 mm	1833 Gs 183.3 mT	2.29 kg / 5.05 LBS 2289.1 g / 22.5 N	warning
2 mm	1618 Gs 161.8 mT	1.78 kg / 3.93 LBS 1784.1 g / 17.5 N	safe
3 mm	1385 Gs 138.5 mT	1.31 kg / 2.88 LBS 1307.5 g / 12.8 N	safe
5 mm	959 Gs 95.9 mT	0.63 kg / 1.38 LBS 627.1 g / 6.2 N	safe
10 mm	362 Gs 36.2 mT	0.09 kg / 0.20 LBS 89.3 g / 0.9 N	safe
15 mm	156 Gs 15.6 mT	0.02 kg / 0.04 LBS 16.5 g / 0.2 N	safe
20 mm	78 Gs 7.8 mT	0.00 kg / 0.01 LBS 4.1 g / 0.0 N	safe
30 mm	27 Gs 2.7 mT	0.00 kg / 0.00 LBS 0.5 g / 0.0 N	safe
50 mm	6 Gs 0.6 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe

Grip strength drops sharply per each millimeter of spacing. Note that every additional insulation layer (e.g., dirt, varnish, rust) significantly reduces the pull force. Neodymiums work optimally at the point of direct contact; gap drastically cuts the force. See how rapidly the pull force plummet, when the product does not touch flatly to the metal substrate. When designing the arrangement, eliminate unnecessary gaps.

Table 2: Sliding hold (wall)
MP 15x7/3.5x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.54 kg / 1.19 LBS 542.0 g / 5.3 N
1 mm	Stal (~0.2)	0.46 kg / 1.01 LBS 458.0 g / 4.5 N
2 mm	Stal (~0.2)	0.36 kg / 0.78 LBS 356.0 g / 3.5 N
3 mm	Stal (~0.2)	0.26 kg / 0.58 LBS 262.0 g / 2.6 N
5 mm	Stal (~0.2)	0.13 kg / 0.28 LBS 126.0 g / 1.2 N
10 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 18.0 g / 0.2 N
15 mm	Stal (~0.2)	0.00 kg / 0.01 LBS 4.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

The following data indicates the approximate shear load required to cause the sliding of the magnet vertically against a vertical metal surface (considering standard friction coefficient). This value depends on the separation distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MP 15x7/3.5x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.81 kg / 1.79 LBS 813.0 g / 8.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.54 kg / 1.19 LBS 542.0 g / 5.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.27 kg / 0.60 LBS 271.0 g / 2.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.36 kg / 2.99 LBS 1355.0 g / 13.3 N

When mounting a holder on a upright plane (e.g., a board), it will maintain only approx. 1/5 of its maximum pull force. Gravitational force as well as a low friction coefficient influence the fact that products move down easier than they pull off. Designing a vertical fastening? Note that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the element will slip down under a noticeably lighter load. Using a rubber pad can effectively improve the result.

Table 4: Steel thickness (substrate influence) - power losses
MP 15x7/3.5x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.27 kg / 0.60 LBS 271.0 g / 2.7 N
1 mm	25%	0.68 kg / 1.49 LBS 677.5 g / 6.6 N
2 mm	50%	1.36 kg / 2.99 LBS 1355.0 g / 13.3 N
3 mm	75%	2.03 kg / 4.48 LBS 2032.5 g / 19.9 N
5 mm	100%	2.71 kg / 5.97 LBS 2710.0 g / 26.6 N
10 mm	100%	2.71 kg / 5.97 LBS 2710.0 g / 26.6 N
11 mm	100%	2.71 kg / 5.97 LBS 2710.0 g / 26.6 N
12 mm	100%	2.71 kg / 5.97 LBS 2710.0 g / 26.6 N

A too thin steel cannot focus the full magnetic flux, which squanders power of the holder. If you attach a powerful product to a weak sheet, the field will pass right through and the holding will be smaller. To achieve 100% of this neodymium's potential, you require a sufficiently solid backing of metal. The material oversaturation means that on thin elements (e.g., car bodies), the magnet works worse. We recommend selecting the steel cross-section based on the following data.

Table 5: Thermal resistance (stability) - thermal limit
MP 15x7/3.5x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	2.71 kg / 5.97 LBS 2710.0 g / 26.6 N	OK
40 °C	-2.2%	2.65 kg / 5.84 LBS 2650.4 g / 26.0 N	OK
60 °C	-4.4%	2.59 kg / 5.71 LBS 2590.8 g / 25.4 N
80 °C	-6.6%	2.53 kg / 5.58 LBS 2531.1 g / 24.8 N
100 °C	-28.8%	1.93 kg / 4.25 LBS 1929.5 g / 18.9 N

Classic neodymiums lose power past the thermal threshold. Avoid high temperatures – excessive heat can irreversibly damage this product. With every degree above norm, the magnet's force briefly decreases. Do not use this product close to heaters exceeding its working range. Exceeding the critical threshold will result in permanent loss of magnetism.

*Engineering note: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low Pc) risk losing magnetic properties at lower temperatures compared to rod magnets. Red status in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MP 15x7/3.5x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	3.48 kg / 7.68 LBS 3 483 Gs	0.52 kg / 1.15 LBS 523 g / 5.1 N	N/A
1 mm	3.24 kg / 7.14 LBS 3 846 Gs	0.49 kg / 1.07 LBS 486 g / 4.8 N	2.91 kg / 6.43 LBS ~0 Gs
2 mm	2.94 kg / 6.49 LBS 3 666 Gs	0.44 kg / 0.97 LBS 441 g / 4.3 N	2.65 kg / 5.84 LBS ~0 Gs
3 mm	2.62 kg / 5.78 LBS 3 460 Gs	0.39 kg / 0.87 LBS 393 g / 3.9 N	2.36 kg / 5.20 LBS ~0 Gs
5 mm	1.98 kg / 4.36 LBS 3 004 Gs	0.30 kg / 0.65 LBS 296 g / 2.9 N	1.78 kg / 3.92 LBS ~0 Gs
10 mm	0.81 kg / 1.78 LBS 1 919 Gs	0.12 kg / 0.27 LBS 121 g / 1.2 N	0.73 kg / 1.60 LBS ~0 Gs
20 mm	0.11 kg / 0.25 LBS 724 Gs	0.02 kg / 0.04 LBS 17 g / 0.2 N	0.10 kg / 0.23 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 88 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
60 mm	0.00 kg / 0.00 LBS 54 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
70 mm	0.00 kg / 0.00 LBS 35 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
80 mm	0.00 kg / 0.00 LBS 24 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
90 mm	0.00 kg / 0.00 LBS 17 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
100 mm	0.00 kg / 0.00 LBS 13 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnets attract each other from a much further distance than a magnet and steel combination. The connection of magnet-to-magnet generates a stronger field and a wider radius of performance. Designing a powerful holder? Use a pair of magnets instead of a neodymium and a striker plate. Remember that when bringing together two magnets, the collision energy is massive. The levitation is slightly lower than the attraction, but still large.
*The magnetic induction in repulsion mode reaches ~0 Gs at the geometric center of the gap (resulting from vector opposition).
* Figures refer to friction force of a pair of identical magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (implants) - precautionary measures
MP 15x7/3.5x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	5.5 cm
Hearing aid	10 Gs (1.0 mT)	4.5 cm
Timepiece	20 Gs (2.0 mT)	3.5 cm
Mobile device	40 Gs (4.0 mT)	3.0 cm
Car key	50 Gs (5.0 mT)	2.5 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation poses a large risk to electronics and pacemakers. These magnets produce a flux that prevents correct functioning of sensitive medical devices. Notice: the invisible magnetic field passes through tissues and housings. Exceptional care must be exercised by people with hearing aids and drug dispensers. The risk also applies to: automatic timepieces, car keys, speakers, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - warning
MP 15x7/3.5x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	27.63 km/h (7.67 m/s)	0.11 J
30 mm	46.90 km/h (13.03 m/s)	0.32 J
50 mm	60.54 km/h (16.82 m/s)	0.53 J
100 mm	85.62 km/h (23.78 m/s)	1.06 J

Magnetic elements are delicate – a collision with steel risks their cracking. Control the attraction moment – a magnet released freely turns into a projectile. Kinetic force can cause material chips or dangerous crushing to fingers. Hold the magnet firmly during bringing near metal so it doesn't hit violently against the steel surface. A collision at high speed means shattering of the magnet. Wear safety glasses when working with large magnets.

Table 9: Anti-corrosion coating durability
MP 15x7/3.5x3 / 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)

The following table defines the conditions under which this product can be safely used. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
MP 15x7/3.5x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	3 461 Mx	34.6 µWb
P_c Coefficient	0.26	Low (Flat)

Flux value emitted by the pole surface. Key data in coil applications as well as sensors. P_c value defines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MP 15x7/3.5x3 / N38

Environment	Effective steel pull	Effect
Air (land)	2.71 kg	Standard
Water (riverbed)	3.10 kg (+0.39 kg buoyancy gain)	+14.5%

Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

*Note: On a vertical wall, the magnet retains only ~20% of its nominal pull.

2. Efficiency vs thickness

*Thin metal sheet (e.g. 0.5mm PC case) significantly weakens 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) = 0.26

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

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: 030182-2026

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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 is a crucial issue when working with model MP 15x7/3.5x3 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. One turn too many can destroy the magnet, so do it slowly. It's a good idea to use a flexible washer 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 7/3.5 mm fits this model. If the magnet does not have a chamfer (cone), we recommend using a screw with a flat or cylindrical head, or possibly using a washer. Always check that the screw head is not larger than the outer diameter of the magnet (15 mm), so it doesn't protrude beyond the outline.

The presented product is a ring magnet with dimensions Ø15 mm (outer diameter) and height 3 mm. The key parameter here is the holding force amounting to approximately 2.71 kg (force ~26.61 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 7/3.5 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. 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 consistent power, neodymium magnets have these key benefits:

Their strength is maintained, and after approximately ten years it drops only by ~1% (according to research),
Magnets effectively resist against loss of magnetization caused by ambient magnetic noise,
A magnet with a metallic nickel surface is more attractive,
Neodymium magnets create maximum magnetic induction on a contact point, which increases force concentration,
Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for action at temperatures approaching 230°C and above...
Thanks to flexibility in designing and the capacity to modify to client solutions,
Wide application in electronics industry – they serve a role in mass storage devices, motor assemblies, medical devices, and technologically advanced constructions.
Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Weaknesses

Disadvantages of neodymium magnets:

To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
They rust in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
Due to limitations in producing threads and complicated shapes in magnets, we propose using casing - magnetic mechanism.
Health risk to health – tiny shards of magnets can be dangerous, if swallowed, which gains importance in the context of child safety. Furthermore, small components of these products can complicate diagnosis medical after entering the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Maximum lifting force for a neodymium magnet – what contributes to it?

Breakaway force was defined for the most favorable conditions, taking into account:

on a plate made of structural steel, optimally conducting the magnetic flux
whose transverse dimension is min. 10 mm
with an polished touching surface
under conditions of ideal adhesion (surface-to-surface)
for force applied at a right angle (pull-off, not shear)
at ambient temperature room level

Magnet lifting force in use – key factors

Bear in mind that the application force may be lower subject to the following factors, in order of importance:

Distance (between the magnet and the plate), since even a very small distance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to varnish, corrosion or debris).
Angle of force application – maximum parameter is obtained only during perpendicular pulling. The shear force of the magnet along the plate is standardly many times lower (approx. 1/5 of the lifting capacity).
Element thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
Steel grade – the best choice is pure iron steel. Stainless steels may attract less.
Smoothness – full contact is obtained only on smooth steel. Rough texture create air cushions, reducing force.
Operating temperature – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was carried out on a smooth plate of optimal thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a small distance between the magnet and the plate lowers the load capacity.

Precautions when working with neodymium magnets

Threat to electronics

Data protection: Strong magnets can ruin payment cards and sensitive devices (heart implants, hearing aids, timepieces).

Permanent damage

Regular neodymium magnets (N-type) lose power when the temperature exceeds 80°C. Damage is permanent.

Do not underestimate power

Before starting, check safety instructions. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Fragile material

Neodymium magnets are ceramic materials, which means they are prone to chipping. Impact of two magnets will cause them cracking into small pieces.

Mechanical processing

Machining of neodymium magnets carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Pinching danger

Pinching hazard: The pulling power is so immense that it can cause hematomas, crushing, and even bone fractures. Use thick gloves.

Magnetic interference

An intense magnetic field negatively affects the functioning of compasses in smartphones and GPS navigation. Maintain magnets close to a smartphone to avoid breaking the sensors.

Health Danger

Individuals with a heart stimulator must maintain an absolute distance from magnets. The magnetic field can disrupt the operation of the life-saving device.

Adults only

These products are not toys. Eating multiple magnets can lead to them pinching intestinal walls, which poses a severe health hazard and requires immediate surgery.

Sensitization to coating

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If skin irritation occurs, cease working with magnets and wear gloves.

Caution! Want to know more? Read our article: Why are neodymium magnets dangerous?

MP 15x7/3.5x3 / N38 - ring magnet

Technical of the product - MP 15x7/3.5x3 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the product - data

Table 1: Static pull force (pull vs distance) - power drop MP 15x7/3.5x3 / N38

Table 2: Sliding hold (wall) MP 15x7/3.5x3 / N38

Table 3: Vertical assembly (sliding) - vertical pull MP 15x7/3.5x3 / N38

Table 4: Steel thickness (substrate influence) - power losses MP 15x7/3.5x3 / N38

Table 5: Thermal resistance (stability) - thermal limit MP 15x7/3.5x3 / N38

Table 6: Two magnets (repulsion) - forces in the system MP 15x7/3.5x3 / N38

Table 7: Protective zones (implants) - precautionary measures MP 15x7/3.5x3 / N38

Table 8: Impact energy (kinetic energy) - warning MP 15x7/3.5x3 / N38

Table 9: Anti-corrosion coating durability MP 15x7/3.5x3 / N38

Table 10: Electrical data (Pc) MP 15x7/3.5x3 / N38

Table 11: Hydrostatics and buoyancy MP 15x7/3.5x3 / N38

1. Vertical hold

2. Efficiency vs thickness

3. Heat tolerance

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

Elemental analysis

Ecology and recycling (GPSR)

Force (pull)

Magnetic Field

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Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

Weaknesses

Pull force analysis

Maximum lifting force for a neodymium magnet – what contributes to it?

Magnet lifting force in use – key factors

Precautions when working with neodymium magnets

Threat to electronics

Permanent damage

Do not underestimate power

Fragile material

Mechanical processing

Pinching danger

Magnetic interference

Health Danger

Adults only

Sensitization to coating

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - power drop
MP 15x7/3.5x3 / N38

Table 2: Sliding hold (wall)
MP 15x7/3.5x3 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MP 15x7/3.5x3 / N38

Table 4: Steel thickness (substrate influence) - power losses
MP 15x7/3.5x3 / N38

Table 5: Thermal resistance (stability) - thermal limit
MP 15x7/3.5x3 / N38

Table 6: Two magnets (repulsion) - forces in the system
MP 15x7/3.5x3 / N38

Table 7: Protective zones (implants) - precautionary measures
MP 15x7/3.5x3 / N38

Table 8: Impact energy (kinetic energy) - warning
MP 15x7/3.5x3 / N38

Table 9: Anti-corrosion coating durability
MP 15x7/3.5x3 / N38

Table 10: Electrical data (P_c)
MP 15x7/3.5x3 / N38

Table 11: Hydrostatics and buoyancy
MP 15x7/3.5x3 / N38

Advantages and disadvantages of Nd₂Fe₁₄B magnets.