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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

technical parameters »

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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

Technical modeling of the magnet - data

The following values represent the result of a mathematical analysis. Values were calculated on algorithms for the class Nd₂Fe₁₄B. Actual parameters might slightly differ from theoretical values. Please consider these data as a preliminary roadmap for designers.

Table 1: Static pull force (force 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	strong
1 mm	2314 Gs 231.4 mT	4.73 kg / 10.43 LBS 4729.9 g / 46.4 N	strong
2 mm	1788 Gs 178.8 mT	2.83 kg / 6.23 LBS 2825.3 g / 27.7 N	strong
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

Grip strength decreases sharply with every subsequent millimeter of distance. Remember that even the smallest gap (e.g., dirt, paint, veneer) noticeably diminishes the holding power. Magnets hold optimally at the point of direct contact; air break weakens the power. Notice how flashily the load capacity plummet, when the magnet does not adhere directly to the metal substrate. When calculating the assembly, discard unnecessary gaps.

Table 2: Sliding load (vertical surface)
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 defines the estimated shear load necessary to initiate the sliding of the magnet down on a vertical steel wall (assuming typical friction). This parameter varies with the distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
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 hanging a magnet on a vertical plane (e.g., a board), it will only hold barely about 20%-30% of its nominal power. Gravitational force and a low friction coefficient influence the fact that magnets move down easier than they pull off. Planning a hanger? Consider that the shear force is significantly lower than the perpendicular breakaway force. On a smooth steel, the element will slip down under a significantly smaller cargo. Utilizing a rubberized layer can drastically raise the stability.

Table 4: Steel thickness (substrate influence) - power losses
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 cannot absorb the full magnetic flux, which squanders power of the holder. If you attach a powerful product to a weak sheet, the flux will penetrate right through and the pull force will drop sharply. To utilize 100% of this neodymium's potential, you need a suitably thick piece of steel. The saturation phenomenon causes that on delicate walls (e.g., thin profiles), the holder holds weaker. We recommend selecting the steel thickness from these parameters.

Table 5: Thermal stability (stability) - resistance threshold
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 irreversibly lose strength past the thermal threshold. Avoid high temperatures – high temperature can irreversibly demagnetize this magnet. With increasing heat, the magnet's power temporarily lowers. Refrain from using this product close to heaters exceeding its working range. Too high temperature will lead to permanent loss of magnetism.

*Engineering note: Heat tolerance is determined by both grade, but also on the magnet's shape. Low-profile magnets (low permeance coefficient) risk losing magnetic properties under lower heat stress than taller cylinders. The danger warning in the table signals permanent field degradation for this particular item.

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

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding 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 magnet and steel combination. The setup of two magnets generates a stronger field and a wider radius of operation. Planning to create a strong closure? Use a pair of magnets instead of a neodymium and a steel. Be careful that when attracting two neodymiums, the impact force is massive. The levitation is a bit weaker than the connection force, but still impressive.
*Field value in repulsion mode reaches ~0 Gs at the geometric center between the magnets (due to field cancellation).
Important: Results demonstrate friction force of dual same neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Hazards (electronics) - precautionary measures
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
Phone / Smartphone	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 IT equipment and pacemakers. These neodymiums generate a field that prevents correct functioning of digital equipment. Be aware: the invisible magnetic field acts through matter and glass. Special caution must be exercised by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, car keys, membranes, and displays. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (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 prone to chipping – a strong collision with metal causes immediate chipping. Pay attention to connection velocity – a magnet released freely turns into a projectile. Striking energy can cause material chips or dangerous crushing to skin. Hold the magnet firmly during bringing near metal so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear eye protection when handling with powerful specimens.

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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (P_c)
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 when building generators as well as sensors. P_c value defines the working geometry.

Table 11: Underwater work (magnet fishing)
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: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Shear force

*Warning: On a vertical wall, the magnet retains only a fraction of its nominal pull.

2. Plate thickness effect

*Thin steel (e.g. computer case) significantly reduces the holding force.

3. Thermal stability

*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) = 0.24

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

Chemical composition

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

Environmental data

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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Component MPL 40x7x3 / N38 features a flat shape and industrial pulling force, making it a perfect solution for building separators and machines. As a magnetic bar with high power (approx. 7.14 kg), this product is available off-the-shelf from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.

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. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.

Plate magnets MPL 40x7x3 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. They work great as invisible mounts under tiles, wood, or glass. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.

For mounting flat magnets MPL 40x7x3 / N38, we recommend utilizing strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. 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. It is a magnetic block with dimensions 40x7x3 mm and a self-weight of 6.3 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths as well as weaknesses of rare earth magnets.

Benefits

In addition to their magnetic capacity, neodymium magnets provide the following advantages:

They do not lose strength, even after nearly ten years – the reduction in power is only ~1% (according to tests),
They are resistant to demagnetization induced by external magnetic fields,
In other words, due to the aesthetic layer of gold, the element gains visual value,
Magnets are distinguished by exceptionally strong magnetic induction on the active area,
Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures reaching 230°C and above...
Thanks to the option of accurate molding and adaptation to custom needs, NdFeB magnets can be created in a broad palette of forms and dimensions, which expands the range of possible applications,
Fundamental importance in advanced technology sectors – they are used in HDD drives, electromotive mechanisms, diagnostic systems, also technologically advanced constructions.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons

Characteristics of disadvantages of neodymium magnets and ways of using them

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a special holder, which not only protects them against impacts but also raises their durability
Neodymium magnets demagnetize 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
Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
Due to limitations in creating nuts and complicated shapes in magnets, we recommend using a housing - magnetic holder.
Health risk to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the aspect of protecting the youngest. Furthermore, small components of these magnets are able to be problematic in diagnostics medical in case of swallowing.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Maximum lifting force for a neodymium magnet – what it depends on?

Breakaway force was defined for ideal contact conditions, taking into account:

with the contact of a yoke made of low-carbon steel, guaranteeing maximum field concentration
with a thickness no less than 10 mm
with a plane free of scratches
with direct contact (no paint)
during pulling in a direction perpendicular to the mounting surface
at conditions approx. 20°C

Lifting capacity in practice – influencing factors

In practice, the real power results from a number of factors, presented from most significant:

Clearance – the presence of any layer (paint, tape, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
Loading method – declared lifting capacity refers to detachment vertically. When slipping, the magnet holds much less (often approx. 20-30% of nominal force).
Plate thickness – too thin steel does not close the flux, causing part of the power to be escaped into the air.
Material composition – different alloys reacts the same. Alloy additives worsen the interaction with the magnet.
Surface structure – the more even the surface, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity was determined with the use of a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the holding force is lower. Additionally, even a slight gap between the magnet and the plate decreases the load capacity.

Safety rules for work with neodymium magnets

Fire risk

Combustion risk: Rare earth powder is explosive. Avoid machining magnets in home conditions as this may cause fire.

Thermal limits

Standard neodymium magnets (grade N) lose magnetization when the temperature exceeds 80°C. Damage is permanent.

Allergy Warning

Medical facts indicate that nickel (standard magnet coating) is a strong allergen. For allergy sufferers, prevent touching magnets with bare hands and opt for encased magnets.

Precision electronics

Note: rare earth magnets generate a field that confuses precision electronics. Maintain a safe distance from your phone, tablet, and navigation systems.

Risk of cracking

Despite the nickel coating, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Electronic devices

Very strong magnetic fields can destroy records on payment cards, HDDs, and storage devices. Stay away of min. 10 cm.

Danger to pacemakers

Warning for patients: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or request help to work with the magnets.

Caution required

Use magnets consciously. Their powerful strength can surprise even experienced users. Be vigilant and do not underestimate their force.

Choking Hazard

NdFeB magnets are not toys. Swallowing a few magnets can lead to them connecting inside the digestive tract, which poses a severe health hazard and requires urgent medical intervention.

Pinching danger

Protect your hands. Two large magnets will snap together instantly with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!

Caution! More info about hazards in the article: Magnet Safety Guide.

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

Technical modeling of the magnet - data

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

Table 2: Sliding load (vertical surface) MPL 40x7x3 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MPL 40x7x3 / N38

Table 4: Steel thickness (substrate influence) - power losses MPL 40x7x3 / N38

Table 5: Thermal stability (stability) - resistance threshold MPL 40x7x3 / N38

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

Table 7: Hazards (electronics) - precautionary measures MPL 40x7x3 / N38

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

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

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

Table 11: Underwater work (magnet fishing) MPL 40x7x3 / N38

1. Shear force

2. Plate thickness effect

3. Thermal stability

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

Chemical composition

Environmental data

Force (pull)

Magnetic Field

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Strengths as well as weaknesses of rare earth magnets.

Benefits

Cons

Pull force analysis

Maximum lifting force for a neodymium magnet – what it depends on?

Lifting capacity in practice – influencing factors

Safety rules for work with neodymium magnets

Fire risk

Thermal limits

Allergy Warning

Precision electronics

Risk of cracking

Electronic devices

Danger to pacemakers

Caution required

Choking Hazard

Pinching danger

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Sliding load (vertical surface)
MPL 40x7x3 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 40x7x3 / N38

Table 4: Steel thickness (substrate influence) - power losses
MPL 40x7x3 / N38

Table 5: Thermal stability (stability) - resistance threshold
MPL 40x7x3 / N38

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

Table 7: Hazards (electronics) - precautionary measures
MPL 40x7x3 / N38

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

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

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

Table 11: Underwater work (magnet fishing)
MPL 40x7x3 / N38