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MPL 40x7x3 / N38 - lamellar 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

lamellar magnet

Catalog no 020162

GTIN/EAN: 5906301811688

5.00

length

40 mm [±0,1 mm]

Width

7 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

6.3 g

Magnetization Direction

↑ axial

Load capacity

7.14 kg / 70.02 N

Magnetic Induction

284.46 mT / 2845 Gs

Coating

[NiCuNi] Nickel

see specifications »

2.79 ZŁ with VAT / pcs + price for transport

2.27 ZŁ net + 23% VAT / pcs

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Product card - MPL 40x7x3 / N38 - lamellar magnet

Specification / characteristics - MPL 40x7x3 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020162
GTIN/EAN	5906301811688
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
length	40 mm [±0,1 mm]
Width	7 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	6.3 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.14 kg / 70.02 N
Magnetic Induction ~ ?	284.46 mT / 2845 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x7x3 / N38 - lamellar 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 assembly - technical parameters

The following values represent the direct effect of a engineering calculation. Values rely on algorithms for the material Nd₂Fe₁₄B. Operational parameters may differ. Treat these calculations as a supplementary guide during assembly planning.

Table 1: Static pull force (pull vs distance) - power drop
MPL 40x7x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2843 Gs 284.3 mT	7.14 kg / 15.74 LBS 7140.0 g / 70.0 N	medium risk
1 mm	2314 Gs 231.4 mT	4.73 kg / 10.43 LBS 4729.9 g / 46.4 N	medium risk
2 mm	1788 Gs 178.8 mT	2.83 kg / 6.23 LBS 2825.3 g / 27.7 N	medium risk
3 mm	1365 Gs 136.5 mT	1.65 kg / 3.63 LBS 1645.1 g / 16.1 N	low risk
5 mm	824 Gs 82.4 mT	0.60 kg / 1.32 LBS 599.2 g / 5.9 N	low risk
10 mm	317 Gs 31.7 mT	0.09 kg / 0.20 LBS 88.6 g / 0.9 N	low risk
15 mm	160 Gs 16.0 mT	0.02 kg / 0.05 LBS 22.5 g / 0.2 N	low risk
20 mm	92 Gs 9.2 mT	0.01 kg / 0.02 LBS 7.5 g / 0.1 N	low risk
30 mm	38 Gs 3.8 mT	0.00 kg / 0.00 LBS 1.3 g / 0.0 N	low risk
50 mm	11 Gs 1.1 mT	0.00 kg / 0.00 LBS 0.1 g / 0.0 N	low risk

Pulling power drops significantly with every mm of spacing. Note that even a microscopic distance (e.g., contamination, paint, rust) significantly diminishes the holding power. Magnets hold optimally at the point of direct contact; gap nullifies the power. Analyze how quickly the load capacity fall, when the magnet does not touch tightly to the metal substrate. When calculating the mounting, avoid redundant distances.

Table 2: Sliding force (wall)
MPL 40x7x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.43 kg / 3.15 LBS 1428.0 g / 14.0 N
1 mm	Stal (~0.2)	0.95 kg / 2.09 LBS 946.0 g / 9.3 N
2 mm	Stal (~0.2)	0.57 kg / 1.25 LBS 566.0 g / 5.6 N
3 mm	Stal (~0.2)	0.33 kg / 0.73 LBS 330.0 g / 3.2 N
5 mm	Stal (~0.2)	0.12 kg / 0.26 LBS 120.0 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 2.0 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 calculates the theoretical weight limit sufficient to initiate the sliding of the magnet down on a upright steel plate (assuming standard friction coefficient). The holding force depends on the separation distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - vertical pull
MPL 40x7x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.14 kg / 4.72 LBS 2142.0 g / 21.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.43 kg / 3.15 LBS 1428.0 g / 14.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.71 kg / 1.57 LBS 714.0 g / 7.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.57 kg / 7.87 LBS 3570.0 g / 35.0 N

When placing a magnet on a upright surface (e.g., a board), it will only hold only about 1/5 of nominal attraction strength. Gravity as well as a low friction coefficient mean that holders slide down easier than they pop off the substrate. Designing a vertical fastening? Note that the sliding force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will slip down under a noticeably lighter weight. Using a rubber pad can drastically increase the grip.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 40x7x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.71 kg / 1.57 LBS 714.0 g / 7.0 N
1 mm	25%	1.79 kg / 3.94 LBS 1785.0 g / 17.5 N
2 mm	50%	3.57 kg / 7.87 LBS 3570.0 g / 35.0 N
3 mm	75%	5.35 kg / 11.81 LBS 5355.0 g / 52.5 N
5 mm	100%	7.14 kg / 15.74 LBS 7140.0 g / 70.0 N
10 mm	100%	7.14 kg / 15.74 LBS 7140.0 g / 70.0 N
11 mm	100%	7.14 kg / 15.74 LBS 7140.0 g / 70.0 N
12 mm	100%	7.14 kg / 15.74 LBS 7140.0 g / 70.0 N

A thin metal plate is incapable of take in the entire magnetic field, which weakens actual performance of the holder. Should you attach a powerful product to a thin surface, the magnetism will penetrate right through and the pull force will drop sharply. To squeeze full efficiency of this neodymium's power, you require a sufficiently solid element of metal. The material oversaturation causes that on delicate walls (e.g., appliance housings), the product shows lower pull force. We suggest choosing the steel cross-section from these parameters.

Table 5: Working in heat (stability) - power drop
MPL 40x7x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.14 kg / 15.74 LBS 7140.0 g / 70.0 N	OK
40 °C	-2.2%	6.98 kg / 15.39 LBS 6982.9 g / 68.5 N	OK
60 °C	-4.4%	6.83 kg / 15.05 LBS 6825.8 g / 67.0 N
80 °C	-6.6%	6.67 kg / 14.70 LBS 6668.8 g / 65.4 N
100 °C	-28.8%	5.08 kg / 11.21 LBS 5083.7 g / 49.9 N

Standard neodymium magnets change their properties power after exceeding the maximum temperature. Watch out for overheating – heat can permanently demagnetize this magnet. With every degree above norm, the neodymium's capacity temporarily lowers. Avoid using this product close to ovens exceeding its safe range. Too high temperature will lead to destruction of magnetism.

*Engineering note: Thermal stability is determined by both grade, and the Permeance Coefficient Pc. Thin magnets (low Pc) may lose charge permanently at lower temperatures compared to rod magnets. Warning indicator in the table indicates a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - forces in the system
MPL 40x7x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	13.95 kg / 30.75 LBS 4 204 Gs	2.09 kg / 4.61 LBS 2092 g / 20.5 N	N/A
1 mm	11.58 kg / 25.53 LBS 5 180 Gs	1.74 kg / 3.83 LBS 1737 g / 17.0 N	10.42 kg / 22.98 LBS ~0 Gs
2 mm	9.24 kg / 20.37 LBS 4 628 Gs	1.39 kg / 3.06 LBS 1386 g / 13.6 N	8.32 kg / 18.34 LBS ~0 Gs
3 mm	7.19 kg / 15.86 LBS 4 083 Gs	1.08 kg / 2.38 LBS 1079 g / 10.6 N	6.47 kg / 14.27 LBS ~0 Gs
5 mm	4.21 kg / 9.28 LBS 3 124 Gs	0.63 kg / 1.39 LBS 632 g / 6.2 N	3.79 kg / 8.36 LBS ~0 Gs
10 mm	1.17 kg / 2.58 LBS 1 647 Gs	0.18 kg / 0.39 LBS 176 g / 1.7 N	1.05 kg / 2.32 LBS ~0 Gs
20 mm	0.17 kg / 0.38 LBS 633 Gs	0.03 kg / 0.06 LBS 26 g / 0.3 N	0.16 kg / 0.34 LBS ~0 Gs
50 mm	0.01 kg / 0.01 LBS 115 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
60 mm	0.00 kg / 0.01 LBS 76 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 53 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 38 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 28 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 21 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 neodymium and metal setup. The connection of two magnets generates a stronger field and a larger range of operation. Designing a solid fastener? Use a pair of magnets instead of a neodymium and a striker plate. Remember that when connecting a pair of magnets, the collision energy is extreme. The levitation is a bit weaker 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).
Note: Estimates apply to friction force of a pair of identical magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Protective zones (implants) - warnings
MPL 40x7x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	7.0 cm
Hearing aid	10 Gs (1.0 mT)	5.5 cm
Timepiece	20 Gs (2.0 mT)	4.0 cm
Mobile device	40 Gs (4.0 mT)	3.0 cm
Car key	50 Gs (5.0 mT)	3.0 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 real danger to electronic devices as well as pacemakers. These neodymiums produce a field that disrupts operation of digital equipment. Be aware: the invisible magnetic field penetrates the body and plastic. Exceptional care must be taken by people with cochlear implants and drug dispensers. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - collision effects
MPL 40x7x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	34.21 km/h (9.50 m/s)	0.28 J
30 mm	58.81 km/h (16.34 m/s)	0.84 J
50 mm	75.92 km/h (21.09 m/s)	1.40 J
100 mm	107.36 km/h (29.82 m/s)	2.80 J

Neodymium magnets are delicate – a violent impact against metal risks their cracking. Pay attention to connection velocity – a magnet released freely becomes dangerous. Impact energy can trigger coating fragments or injury to skin. Be sure to control the product during mounting so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Wear eye protection when working with large magnets.

Table 9: Coating parameters (durability)
MPL 40x7x3 / 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (Flux)
MPL 40x7x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	6 379 Mx	63.8 µWb
P_c Coefficient	0.24	Low (Flat)

Flux value passing through the magnet pole. Essential parameter in coil applications and motors. The P_c coefficient determines the working geometry.

Table 11: Submerged application
MPL 40x7x3 / N38

Environment	Effective steel pull	Effect
Air (land)	7.14 kg	Standard
Water (riverbed)	8.18 kg (+1.04 kg buoyancy gain)	+14.5%

Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Water displaces steel, making heavy objects slightly lighter. However, remember the water resistance when pulling the rope quickly.

1. Wall mount (shear)

*Warning: On a vertical surface, the magnet holds only ~20% of its nominal pull.

2. Steel saturation

*Thin steel (e.g. 0.5mm PC case) significantly weakens the holding force.

3. Thermal stability

*For standard magnets, 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) = 0.24

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.

Technical specification and ecology

Elemental analysis

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Ecology and recycling (GPSR)

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 020162-2026

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MPL 5x5x1.2 / N38 - lamellar magnet

0.1845 ZŁ brutto / pcs

Component MPL 40x7x3 / N38 features a flat shape and industrial pulling force, making it a perfect solution for building separators and machines. This magnetic block with a force of 70.02 N is ready for shipment in 24h, allowing for rapid realization of your project. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.

The key to success is shifting the magnets along their largest connection plane (using e.g., the edge of a table), which is easier than trying to tear them apart directly. Watch your fingers! Magnets with a force of 7.14 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

They constitute a key element in the production of wind generators and material handling systems. Thanks to the flat surface and high force (approx. 7.14 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.

Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. In practice, this means that this magnet has the greatest attraction force on its main planes (40x7 mm), which is ideal for flat mounting. This is the most popular configuration for block magnets used in separators and holders.

This model is characterized by dimensions 40x7x3 mm, which, at a weight of 6.3 g, makes it an element with high energy density. The key parameter here is the holding force amounting to approximately 7.14 kg (force ~70.02 N), which, with such a flat shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths as well as weaknesses of rare earth magnets.

Pros

Besides their high retention, neodymium magnets are valued for these benefits:

They retain attractive force for around ten years – the drop is just ~1% (in theory),
Magnets perfectly protect themselves against loss of magnetization caused by ambient magnetic noise,
Thanks to the reflective finish, the layer of nickel, gold, or silver-plated gives an clean appearance,
Neodymium magnets create maximum magnetic induction on a small area, which increases force concentration,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for functioning at temperatures approaching 230°C and above...
Thanks to modularity in designing and the capacity to customize to unusual requirements,
Wide application in advanced technology sectors – they find application in magnetic memories, electric drive systems, advanced medical instruments, also multitasking production systems.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Weaknesses

Disadvantages of NdFeB magnets:

To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop 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
They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
We suggest a housing - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complex forms.
Potential hazard to health – tiny shards of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child safety. Additionally, tiny parts of these devices are able to be problematic in diagnostics medical after entering the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum holding power of the magnet – what it depends on?

Information about lifting capacity was defined for ideal contact conditions, taking into account:

using a base made of low-carbon steel, functioning as a ideal flux conductor
possessing a massiveness of at least 10 mm to avoid saturation
characterized by lack of roughness
with total lack of distance (without paint)
under vertical force vector (90-degree angle)
at conditions approx. 20°C

Practical lifting capacity: influencing factors

It is worth knowing that the application force may be lower subject to the following factors, in order of importance:

Distance (between the magnet and the plate), as even a very small distance (e.g. 0.5 mm) can cause a decrease in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
Direction of force – maximum parameter is available only during pulling at a 90° angle. The force required to slide of the magnet along the surface is typically several times smaller (approx. 1/5 of the lifting capacity).
Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
Metal type – not every steel attracts identically. Alloy additives weaken the attraction effect.
Smoothness – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
Temperature – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under shearing force the holding force is lower. Additionally, even a minimal clearance between the magnet and the plate reduces the lifting capacity.

Precautions when working with neodymium magnets

Safe distance

Device Safety: Strong magnets can damage payment cards and delicate electronics (pacemakers, medical aids, mechanical watches).

Flammability

Powder generated during machining of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Sensitization to coating

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction occurs, immediately stop working with magnets and wear gloves.

Impact on smartphones

An intense magnetic field interferes with the functioning of magnetometers in phones and navigation systems. Do not bring magnets close to a smartphone to avoid damaging the sensors.

Demagnetization risk

Standard neodymium magnets (grade N) lose power when the temperature surpasses 80°C. The loss of strength is permanent.

Pinching danger

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

Respect the power

Before starting, check safety instructions. Sudden snapping can break the magnet or hurt your hand. Be predictive.

Material brittleness

Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.

Warning for heart patients

Life threat: Strong magnets can turn off heart devices and defibrillators. Stay away if you have medical devices.

Product not for children

Strictly store magnets out of reach of children. Risk of swallowing is high, and the consequences of magnets clamping inside the body are very dangerous.

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

MPL 40x7x3 / N38 - lamellar magnet

Product card - MPL 40x7x3 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the assembly - technical parameters

Table 1: Static pull force (pull vs distance) - power drop MPL 40x7x3 / N38

Table 2: Sliding force (wall) MPL 40x7x3 / N38

Table 3: Wall mounting (sliding) - vertical pull MPL 40x7x3 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MPL 40x7x3 / N38

Table 5: Working in heat (stability) - power drop MPL 40x7x3 / N38

Table 6: Two magnets (repulsion) - forces in the system MPL 40x7x3 / N38

Table 7: Protective zones (implants) - warnings MPL 40x7x3 / N38

Table 8: Impact energy (cracking risk) - collision effects MPL 40x7x3 / N38

Table 9: Coating parameters (durability) MPL 40x7x3 / N38

Table 10: Electrical data (Flux) MPL 40x7x3 / N38

Table 11: Submerged application MPL 40x7x3 / N38

1. Wall mount (shear)

2. Steel saturation

3. Thermal stability

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

Elemental analysis

Ecology and recycling (GPSR)

Magnet pull force

Field Strength

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MPL 5x5x1.2 / N38 - lamellar magnet

Strengths as well as weaknesses of rare earth magnets.

Pros

Weaknesses

Holding force characteristics

Maximum holding power of the magnet – what it depends on?

Practical lifting capacity: influencing factors

Precautions when working with neodymium magnets

Safe distance

Flammability

Sensitization to coating

Impact on smartphones

Demagnetization risk

Pinching danger

Respect the power

Material brittleness

Warning for heart patients

Product not for children

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - power drop
MPL 40x7x3 / N38

Table 2: Sliding force (wall)
MPL 40x7x3 / N38

Table 3: Wall mounting (sliding) - vertical pull
MPL 40x7x3 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 40x7x3 / N38

Table 5: Working in heat (stability) - power drop
MPL 40x7x3 / N38

Table 6: Two magnets (repulsion) - forces in the system
MPL 40x7x3 / N38

Table 7: Protective zones (implants) - warnings
MPL 40x7x3 / N38

Table 8: Impact energy (cracking risk) - collision effects
MPL 40x7x3 / N38

Table 9: Coating parameters (durability)
MPL 40x7x3 / N38

Table 10: Electrical data (Flux)
MPL 40x7x3 / N38

Table 11: Submerged application
MPL 40x7x3 / N38