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MP 15x7/3.5x3 / 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 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

technical specifications »

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 analysis of the product - technical parameters

These information are the direct effect of a mathematical analysis. Values are based on models for the material Nd₂Fe₁₄B. Operational parameters may differ from theoretical values. Use these data as a preliminary roadmap when designing systems.

Table 1: Static pull force (force vs gap) - 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	low risk
3 mm	1385 Gs 138.5 mT	1.31 kg / 2.88 LBS 1307.5 g / 12.8 N	low risk
5 mm	959 Gs 95.9 mT	0.63 kg / 1.38 LBS 627.1 g / 6.2 N	low risk
10 mm	362 Gs 36.2 mT	0.09 kg / 0.20 LBS 89.3 g / 0.9 N	low risk
15 mm	156 Gs 15.6 mT	0.02 kg / 0.04 LBS 16.5 g / 0.2 N	low risk
20 mm	78 Gs 7.8 mT	0.00 kg / 0.01 LBS 4.1 g / 0.0 N	low risk
30 mm	27 Gs 2.7 mT	0.00 kg / 0.00 LBS 0.5 g / 0.0 N	low risk
50 mm	6 Gs 0.6 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk

Magnetic force weakens sharply per each millimeter of spacing. Remember that every additional insulation layer (e.g., contamination, paint, dust) noticeably diminishes the holding power. Magnetic products hold optimally in perfect adhesion; gap drastically cuts the power. Analyze how quickly the parameters fall, when the magnet does not touch flatly to the steel surface. When calculating the mounting, avoid redundant distances.

Table 2: Sliding capacity (vertical surface)
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 necessary to start the sliding of the magnet vertically on a upright steel wall (assuming typical friction coefficient). This value depends on the separation distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - 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 element on a vertical surface (e.g., a fridge), it you can count on barely about 20%-30% of nominal attraction strength. Gravitational force and a weak degree of grip mean that magnets slip easier than they pull off. Want to create a wall mount? Note that the shear force is much weaker than the perpendicular breakaway force. On a slippery surface, the magnet will slide down under a significantly smaller load. Utilizing a rubberized layer can drastically 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 is unable to conduct the full magnetic flux, which weakens actual performance of the holder. Should you mount a strong magnet to a weak sheet, the flux will pass right through and the attraction force will be weaker. To squeeze the maximum of this neodymium's potential, you need a suitably thick element of metal. The material oversaturation means that on thin elements (e.g., car bodies), the product holds weaker. We recommend selecting the steel cross-section according to the table below.

Table 5: Thermal resistance (material behavior) - 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

Ordinary NdFeB products irreversibly lose strength after exceeding the maximum temperature. Avoid high temperatures – high temperature can permanently damage this product. With every degree above norm, the neodymium's capacity briefly decreases. Refrain from using this product in hot environments exceeding its safe range. Exceeding the critical threshold will lead to destruction of magnetic properties.

*Important note: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low Pc) may lose charge permanently at lower temperatures compared to rod magnets. The danger warning in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field range
MP 15x7/3.5x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (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 interact from a significantly greater distance than a neodymium and metal setup. Such a system of two magnets produces a massive flux and a wider radius of operation. Designing a solid fastener? Utilize two neodymiums instead of one magnet and a striker plate. Exercise caution that when bringing together two magnets, the impact force is extreme. The levitation is slightly lower than the attraction, but still large.
*Flux density for N-N configuration drops to ~0 Gs at the geometric center of the gap (resulting from vector opposition).
* Results apply to sliding force of a pair of identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - warnings
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

A strong magnetic field poses a large risk to IT equipment as well as pacemakers. These NdFeB products produce a field that destroys function of digital equipment. Notice: the unseen radiation passes through tissues and housings. Increased vigilance must be taken by people with cochlear implants and drug dispensers. Also at risk are: automatic timepieces, remotes, membranes, and displays. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Collisions (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

NdFeB products are delicate – a collision with steel causes immediate chipping. Control the attraction moment – a magnet released freely becomes dangerous. Striking energy can trigger coating fragments or dangerous crushing to skin. Hold the magnet firmly during installation so it doesn't hit with great force against the steel surface. A collision at high speed ends with a crack of the neodymium. Wear safety glasses when playing with powerful specimens.

Table 9: Coating parameters (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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Flux)
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 when building generators and motors. P_c value defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
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%

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

Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.

1. Sliding resistance

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

2. Plate thickness effect

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

3. Heat tolerance

*For N38 grade, the max working temp is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.26

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. 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

Measurement Calculator

Pulling force

Newtons (N)

Pounds (lbs)

Magnetic Induction

Induction (Gs)

Tesla (T)

Simply populate one field, to let the tool calculate everything else automatically.

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The ring magnet with a hole MP 15x7/3.5x3 / 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 2.71 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.

These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but does not ensure full waterproofing. 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. 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.

It is a magnetic ring with a diameter of 15 mm and thickness 3 mm. The key parameter here is the holding force amounting to approximately 2.71 kg (force ~26.61 N). The mounting hole diameter is precisely 7/3.5 mm.

The poles are located on the planes with holes, not on the sides of the ring. In the case of connecting two rings, make sure one is turned the right way. When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Advantages as well as disadvantages of neodymium magnets.

Advantages

Besides their tremendous field intensity, neodymium magnets offer the following advantages:

Their power is maintained, and after around ten years it decreases only by ~1% (theoretically),
They do not lose their magnetic properties even under close interference source,
In other words, due to the reflective layer of silver, the element gains a professional look,
They feature high magnetic induction at the operating surface, which increases their power,
Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures reaching 230°C and above...
Thanks to flexibility in designing and the ability to adapt to complex applications,
Key role in innovative solutions – they are commonly used in HDD drives, motor assemblies, medical devices, and complex engineering applications.
Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Cons

Disadvantages of NdFeB magnets:

To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
When exposed to humidity, magnets start to 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.
Due to limitations in creating nuts and complicated shapes in magnets, we recommend using casing - magnetic holder.
Potential hazard to health – tiny shards of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small elements of these devices are able to be problematic in diagnostics medical when they are in the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Best holding force of the magnet in ideal parameters – what contributes to it?

Magnet power was defined for optimal configuration, taking into account:

with the contact of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
with a thickness minimum 10 mm
with an polished contact surface
with total lack of distance (without coatings)
during pulling in a direction perpendicular to the plane
in neutral thermal conditions

Practical aspects of lifting capacity – factors

Please note that the working load will differ depending on elements below, in order of importance:

Clearance – the presence of foreign body (rust, tape, air) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
Substrate thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
Metal type – different alloys reacts the same. Alloy additives weaken the attraction effect.
Surface quality – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and at low temperatures 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 shearing force the lifting capacity is smaller. Additionally, even a slight gap between the magnet and the plate lowers the lifting capacity.

H&S for magnets

Protective goggles

Watch out for shards. Magnets can fracture upon violent connection, launching sharp fragments into the air. Wear goggles.

Operating temperature

Standard neodymium magnets (N-type) lose power when the temperature exceeds 80°C. This process is irreversible.

Compass and GPS

GPS units and mobile phones are extremely susceptible to magnetic fields. Close proximity with a strong magnet can ruin the internal compass in your phone.

Data carriers

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

ICD Warning

Warning for patients: Strong magnetic fields affect medical devices. Maintain minimum 30 cm distance or request help to handle the magnets.

Avoid contact if allergic

Some people have a sensitization to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching may cause a rash. We recommend use protective gloves.

Respect the power

Handle with care. Neodymium magnets attract from a long distance and snap with huge force, often faster than you can react.

Dust explosion hazard

Drilling and cutting of NdFeB material poses a fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Product not for children

Always keep magnets away from children. Choking hazard is significant, and the consequences of magnets clamping inside the body are tragic.

Finger safety

Risk of injury: The attraction force is so immense that it can result in hematomas, pinching, and even bone fractures. Use thick gloves.

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

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 analysis of the product - technical parameters

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

Table 2: Sliding capacity (vertical surface) MP 15x7/3.5x3 / N38

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

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

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

Table 6: Two magnets (repulsion) - field range MP 15x7/3.5x3 / N38

Table 7: Hazards (electronics) - warnings MP 15x7/3.5x3 / N38

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

Table 9: Coating parameters (durability) MP 15x7/3.5x3 / N38

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

Table 11: Underwater work (magnet fishing) MP 15x7/3.5x3 / N38

1. Sliding resistance

2. Plate thickness effect

3. Heat tolerance

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

Elemental analysis

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

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Advantages as well as disadvantages of neodymium magnets.

Advantages

Cons

Lifting parameters

Best holding force of the magnet in ideal parameters – what contributes to it?

Practical aspects of lifting capacity – factors

H&S for magnets

Protective goggles

Operating temperature

Compass and GPS

Data carriers

ICD Warning

Avoid contact if allergic

Respect the power

Dust explosion hazard

Product not for children

Finger safety

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Sliding capacity (vertical surface)
MP 15x7/3.5x3 / N38

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

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

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

Table 6: Two magnets (repulsion) - field range
MP 15x7/3.5x3 / N38

Table 7: Hazards (electronics) - warnings
MP 15x7/3.5x3 / N38

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

Table 9: Coating parameters (durability)
MP 15x7/3.5x3 / N38

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

Table 11: Underwater work (magnet fishing)
MP 15x7/3.5x3 / N38