MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

Product available Ships tomorrow

MPL 40x15x5x2[7/3.5] / 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 020154

GTIN/EAN: 5906301811602

5.00

length

40 mm [±0,1 mm]

Width

15 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

22.5 g

Magnetization Direction

↑ axial

Load capacity

11.35 kg / 111.37 N

Magnetic Induction

249.11 mT / 2491 Gs

Coating

[NiCuNi] Nickel

see parameters »

15.07 ZŁ with VAT / pcs + price for transport

12.25 ZŁ net + 23% VAT / pcs

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Technical - MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

Specification / characteristics - MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

properties

properties	values
Cat. no.	020154
GTIN/EAN	5906301811602
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	15 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	22.5 g
Magnetization Direction	↑ axial
Load capacity ~ ?	11.35 kg / 111.37 N
Magnetic Induction ~ ?	249.11 mT / 2491 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x15x5x2[7/3.5] / 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 - report

These values constitute the outcome of a engineering analysis. Values are based on models for the material Nd₂Fe₁₄B. Operational parameters might slightly differ. Treat these data as a supplementary guide during assembly planning.

Table 1: Static force (pull vs distance) - characteristics
MPL 40x15x5x2[7/3.5] / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2490 Gs 249.0 mT	11.35 kg / 25.02 LBS 11350.0 g / 111.3 N	crushing
1 mm	2306 Gs 230.6 mT	9.73 kg / 21.45 LBS 9731.3 g / 95.5 N	medium risk
2 mm	2095 Gs 209.5 mT	8.03 kg / 17.70 LBS 8028.8 g / 78.8 N	medium risk
3 mm	1877 Gs 187.7 mT	6.45 kg / 14.21 LBS 6445.4 g / 63.2 N	medium risk
5 mm	1472 Gs 147.2 mT	3.97 kg / 8.74 LBS 3965.1 g / 38.9 N	medium risk
10 mm	792 Gs 79.2 mT	1.15 kg / 2.53 LBS 1147.1 g / 11.3 N	low risk
15 mm	454 Gs 45.4 mT	0.38 kg / 0.83 LBS 376.9 g / 3.7 N	low risk
20 mm	278 Gs 27.8 mT	0.14 kg / 0.31 LBS 141.4 g / 1.4 N	low risk
30 mm	122 Gs 12.2 mT	0.03 kg / 0.06 LBS 27.0 g / 0.3 N	low risk
50 mm	35 Gs 3.5 mT	0.00 kg / 0.01 LBS 2.3 g / 0.0 N	low risk

Pulling power drops sharply with every subsequent millimeter of distance. Note that even the smallest gap (e.g., contamination, varnish, rust) strongly diminishes the holding power. Neodymiums operate most effectively at the point of direct contact; air break nullifies the force. Notice how rapidly the parameters fall, when the product does not touch tightly to the steel surface. When calculating the assembly, discard redundant distances.

Table 2: Shear hold (vertical surface)
MPL 40x15x5x2[7/3.5] / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.27 kg / 5.00 LBS 2270.0 g / 22.3 N
1 mm	Stal (~0.2)	1.95 kg / 4.29 LBS 1946.0 g / 19.1 N
2 mm	Stal (~0.2)	1.61 kg / 3.54 LBS 1606.0 g / 15.8 N
3 mm	Stal (~0.2)	1.29 kg / 2.84 LBS 1290.0 g / 12.7 N
5 mm	Stal (~0.2)	0.79 kg / 1.75 LBS 794.0 g / 7.8 N
10 mm	Stal (~0.2)	0.23 kg / 0.51 LBS 230.0 g / 2.3 N
15 mm	Stal (~0.2)	0.08 kg / 0.17 LBS 76.0 g / 0.7 N
20 mm	Stal (~0.2)	0.03 kg / 0.06 LBS 28.0 g / 0.3 N
30 mm	Stal (~0.2)	0.01 kg / 0.01 LBS 6.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

The following data presents the theoretical holding capacity needed to cause the downward movement of the magnet down on a upright steel wall (considering standard friction). The holding force varies with the distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 40x15x5x2[7/3.5] / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	3.41 kg / 7.51 LBS 3405.0 g / 33.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.27 kg / 5.00 LBS 2270.0 g / 22.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.14 kg / 2.50 LBS 1135.0 g / 11.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	5.68 kg / 12.51 LBS 5675.0 g / 55.7 N

When mounting a element on a upright wall (e.g., a fridge), it will only hold just about 1/5 of nominal attraction strength. Gravity and a low friction coefficient influence the fact that products move 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 painted metal, the magnet will slide down under a much lighter weight. Using a rubber pad can drastically improve the result.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 40x15x5x2[7/3.5] / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.57 kg / 1.25 LBS 567.5 g / 5.6 N
1 mm	13%	1.42 kg / 3.13 LBS 1418.8 g / 13.9 N
2 mm	25%	2.84 kg / 6.26 LBS 2837.5 g / 27.8 N
3 mm	38%	4.26 kg / 9.38 LBS 4256.3 g / 41.8 N
5 mm	63%	7.09 kg / 15.64 LBS 7093.8 g / 69.6 N
10 mm	100%	11.35 kg / 25.02 LBS 11350.0 g / 111.3 N
11 mm	100%	11.35 kg / 25.02 LBS 11350.0 g / 111.3 N
12 mm	100%	11.35 kg / 25.02 LBS 11350.0 g / 111.3 N

A thin sheet is incapable of focus the full magnetic flux, which wastes potential of the holder. If you attach a powerful product to a weak sheet, the field will pass right through and the pull force will drop sharply. To utilize full efficiency of this neodymium's power, you need a suitably thick piece of metal. The saturation phenomenon causes that on delicate walls (e.g., car bodies), the product works worse. We suggest choosing the steel cross-section based on the following data.

Table 5: Working in heat (material behavior) - thermal limit
MPL 40x15x5x2[7/3.5] / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	11.35 kg / 25.02 LBS 11350.0 g / 111.3 N	OK
40 °C	-2.2%	11.10 kg / 24.47 LBS 11100.3 g / 108.9 N	OK
60 °C	-4.4%	10.85 kg / 23.92 LBS 10850.6 g / 106.4 N
80 °C	-6.6%	10.60 kg / 23.37 LBS 10600.9 g / 104.0 N
100 °C	-28.8%	8.08 kg / 17.82 LBS 8081.2 g / 79.3 N

Standard neodymium magnets change their properties power after exceeding the maximum temperature. Watch out for overheating – high temperature can permanently damage this magnet. With every degree above norm, the neodymium's force momentarily decreases. Avoid using this magnet in hot environments exceeding its operating temperature limit. Exceeding the critical threshold will result in permanent loss of magnetic properties.

*Important note: Heat tolerance is determined by both grade, but also on the magnet's shape. Flat magnets (low Pc) are more susceptible to demagnetization at lower temperatures compared to rod magnets. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - field range
MPL 40x15x5x2[7/3.5] / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	22.94 kg / 50.58 LBS 3 961 Gs	3.44 kg / 7.59 LBS 3441 g / 33.8 N	N/A
1 mm	21.37 kg / 47.11 LBS 4 807 Gs	3.21 kg / 7.07 LBS 3205 g / 31.4 N	19.23 kg / 42.40 LBS ~0 Gs
2 mm	19.67 kg / 43.37 LBS 4 612 Gs	2.95 kg / 6.50 LBS 2951 g / 28.9 N	17.70 kg / 39.03 LBS ~0 Gs
3 mm	17.94 kg / 39.55 LBS 4 404 Gs	2.69 kg / 5.93 LBS 2691 g / 26.4 N	16.15 kg / 35.59 LBS ~0 Gs
5 mm	14.58 kg / 32.15 LBS 3 971 Gs	2.19 kg / 4.82 LBS 2187 g / 21.5 N	13.12 kg / 28.93 LBS ~0 Gs
10 mm	8.01 kg / 17.67 LBS 2 944 Gs	1.20 kg / 2.65 LBS 1202 g / 11.8 N	7.21 kg / 15.90 LBS ~0 Gs
20 mm	2.32 kg / 5.11 LBS 1 583 Gs	0.35 kg / 0.77 LBS 348 g / 3.4 N	2.09 kg / 4.60 LBS ~0 Gs
50 mm	0.12 kg / 0.26 LBS 359 Gs	0.02 kg / 0.04 LBS 18 g / 0.2 N	0.11 kg / 0.24 LBS ~0 Gs
60 mm	0.05 kg / 0.12 LBS 243 Gs	0.01 kg / 0.02 LBS 8 g / 0.1 N	0.05 kg / 0.11 LBS ~0 Gs
70 mm	0.03 kg / 0.06 LBS 171 Gs	0.00 kg / 0.01 LBS 4 g / 0.0 N	0.02 kg / 0.05 LBS ~0 Gs
80 mm	0.01 kg / 0.03 LBS 124 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.03 LBS ~0 Gs
90 mm	0.01 kg / 0.02 LBS 92 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
100 mm	0.00 kg / 0.01 LBS 70 Gs	0.00 kg / 0.00 LBS 1 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. The setup of magnet-to-magnet creates a more powerful interaction and a further horizon of action. Planning to create a solid fastener? Apply two magnets instead of one magnet and a steel. Exercise caution that when attracting two neodymiums, the pinch force is extreme. The levitation is marginally weaker than the connection force, but still large.
*Flux density between like poles reaches ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Attention: Results show shear force of dual identical magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - warnings
MPL 40x15x5x2[7/3.5] / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	10.5 cm
Hearing aid	10 Gs (1.0 mT)	8.0 cm
Timepiece	20 Gs (2.0 mT)	6.5 cm
Mobile device	40 Gs (4.0 mT)	5.0 cm
Car key	50 Gs (5.0 mT)	4.5 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

Powerful magnet radiation poses a real danger to electronic devices as well as medical implants. These magnets generate a flux that disrupts operation of digital equipment. Remember: the invisible magnetic field passes through tissues and housings. Special caution must be taken by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, remotes, membranes, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - collision effects
MPL 40x15x5x2[7/3.5] / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	24.04 km/h (6.68 m/s)	0.50 J
30 mm	39.29 km/h (10.91 m/s)	1.34 J
50 mm	50.66 km/h (14.07 m/s)	2.23 J
100 mm	71.63 km/h (19.90 m/s)	4.45 J

Neodymium magnets are very brittle – a violent impact against metal risks their cracking. Control the attraction moment – a magnet released freely turns into a projectile. Impact energy can cause material chips or injury to fingers. Be sure to control the product during mounting so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h means shattering of the magnet. Wear eye protection when handling with powerful specimens.

Table 9: Surface protection spec
MPL 40x15x5x2[7/3.5] / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (Flux)
MPL 40x15x5x2[7/3.5] / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	14 969 Mx	149.7 µWb
P_c Coefficient	0.26	Low (Flat)

Total magnetic flux emitted by the magnet pole. Key data in coil applications as well as sensors. P_c value defines the working geometry.

Table 11: Hydrostatics and buoyancy
MPL 40x15x5x2[7/3.5] / N38

Environment	Effective steel pull	Effect
Air (land)	11.35 kg	Standard
Water (riverbed)	13.00 kg (+1.65 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.

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Sliding resistance

*Warning: On a vertical wall, the magnet retains merely approx. 20-30% of its max power.

2. Steel saturation

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

3. Heat tolerance

*For N38 grade, the critical limit is 80°C.

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

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

Technical and environmental data

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%

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: 020154-2026

Magnet Unit Converter

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Component MPL 40x15x5x2[7/3.5] / N38 features a flat shape and professional pulling force, making it an ideal solution for building separators and machines. This magnetic block with a force of 111.37 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.

Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 40x15x5x2[7/3.5] / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend extreme caution, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.

They constitute a key element in the production of wind generators and material handling systems. Thanks to the flat surface and high force (approx. 11.35 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.

For mounting flat magnets MPL 40x15x5x2[7/3.5] / N38, we recommend utilizing strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

Standardly, the MPL 40x15x5x2[7/3.5] / N38 model is magnetized axially (dimension 5 mm), which means that the N and S poles are located on its largest, flat surfaces. In practice, this means that this magnet has the greatest attraction force on its main planes (40x15 mm), which is ideal for flat mounting. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.

This model is characterized by dimensions 40x15x5 mm, which, at a weight of 22.5 g, makes it an element with high energy density. The key parameter here is the lifting capacity amounting to approximately 11.35 kg (force ~111.37 N), which, with such a compact shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Strengths

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

They do not lose magnetism, even during nearly ten years – the drop in strength is only ~1% (based on measurements),
Neodymium magnets are distinguished by extremely resistant to loss of magnetic properties caused by external field sources,
Thanks to the metallic finish, the plating of Ni-Cu-Ni, gold, or silver-plated gives an elegant appearance,
They feature high magnetic induction at the operating surface, which affects their effectiveness,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures approaching 230°C and above...
Possibility of custom machining and adjusting to individual needs,
Universal use in modern technologies – they find application in mass storage devices, electromotive mechanisms, medical equipment, as well as multitasking production systems.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons

Characteristics of disadvantages of neodymium magnets: weaknesses and usage proposals

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a steel housing, which not only secures them against impacts but also increases their durability
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
When exposed to humidity, magnets usually 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.
Limited ability of producing threads in the magnet and complicated shapes - preferred is casing - magnet mounting.
Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the context of child safety. It is also worth noting that small components of these devices are able to be problematic in diagnostics medical in case of swallowing.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Maximum lifting capacity of the magnet – what affects it?

Breakaway force is the result of a measurement for ideal contact conditions, assuming:

on a plate made of mild steel, optimally conducting the magnetic flux
possessing a thickness of minimum 10 mm to ensure full flux closure
with a plane free of scratches
without any clearance between the magnet and steel
under perpendicular application of breakaway force (90-degree angle)
in neutral thermal conditions

Impact of factors on magnetic holding capacity in practice

It is worth knowing that the application force will differ influenced by elements below, starting with the most relevant:

Gap between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of maximum force).
Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
Metal type – different alloys reacts the same. High carbon content weaken the interaction with the magnet.
Plate texture – smooth surfaces ensure maximum contact, which improves field saturation. Uneven metal reduce efficiency.
Heat – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity testing was performed on a smooth plate of suitable thickness, under a perpendicular pulling force, however under parallel forces the load capacity is reduced by as much as 5 times. Moreover, even a small distance between the magnet and the plate decreases the lifting capacity.

Safety rules for work with neodymium magnets

This is not a toy

Neodymium magnets are not suitable for play. Swallowing several magnets may result in them pinching intestinal walls, which poses a critical condition and necessitates immediate surgery.

Hand protection

Big blocks can smash fingers in a fraction of a second. Do not place your hand betwixt two strong magnets.

Skin irritation risks

Studies show that nickel (the usual finish) is a common allergen. If your skin reacts to metals, refrain from direct skin contact or select coated magnets.

Implant safety

Life threat: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.

Impact on smartphones

A powerful magnetic field negatively affects the operation of magnetometers in phones and GPS navigation. Keep magnets near a smartphone to avoid damaging the sensors.

Operating temperature

Standard neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. Damage is permanent.

Eye protection

Neodymium magnets are sintered ceramics, which means they are prone to chipping. Collision of two magnets leads to them breaking into shards.

Dust is flammable

Dust produced during machining of magnets is flammable. Do not drill into magnets without proper cooling and knowledge.

Safe distance

Very strong magnetic fields can erase data on credit cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

Respect the power

Before starting, read the rules. Sudden snapping can break the magnet or hurt your hand. Think ahead.

Safety First! Need more info? Read our article: Why are neodymium magnets dangerous?

MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

Technical - MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the assembly - report

Table 1: Static force (pull vs distance) - characteristics MPL 40x15x5x2[7/3.5] / N38

Table 2: Shear hold (vertical surface) MPL 40x15x5x2[7/3.5] / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MPL 40x15x5x2[7/3.5] / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MPL 40x15x5x2[7/3.5] / N38

Table 5: Working in heat (material behavior) - thermal limit MPL 40x15x5x2[7/3.5] / N38

Table 6: Two magnets (attraction) - field range MPL 40x15x5x2[7/3.5] / N38

Table 7: Protective zones (implants) - warnings MPL 40x15x5x2[7/3.5] / N38

Table 8: Collisions (kinetic energy) - collision effects MPL 40x15x5x2[7/3.5] / N38

Table 9: Surface protection spec MPL 40x15x5x2[7/3.5] / N38

Table 10: Electrical data (Flux) MPL 40x15x5x2[7/3.5] / N38

Table 11: Hydrostatics and buoyancy MPL 40x15x5x2[7/3.5] / N38

1. Sliding resistance

2. Steel saturation

3. Heat tolerance

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

Elemental analysis

Environmental data

Force (pull)

Field Strength

Other deals

UMGGW 29x8 [M4] GW / N38 - magnetic holder rubber internal thread

UMC 32x11/3x8 / N38 - cylindrical magnetic holder

FM Ruszt magnetyczny do leja fi 200 jednopoziomowy / N52 - magnetic filter

UMP 75x25 [M10x3] GW F200 GOLD Lina / N42 - search holder

Advantages as well as disadvantages of Nd2Fe14B magnets.

Strengths

Cons

Pull force analysis

Maximum lifting capacity of the magnet – what affects it?

Impact of factors on magnetic holding capacity in practice

Safety rules for work with neodymium magnets

This is not a toy

Hand protection

Skin irritation risks

Implant safety

Impact on smartphones

Operating temperature

Eye protection

Dust is flammable

Safe distance

Respect the power

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - characteristics
MPL 40x15x5x2[7/3.5] / N38

Table 2: Shear hold (vertical surface)
MPL 40x15x5x2[7/3.5] / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 40x15x5x2[7/3.5] / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 40x15x5x2[7/3.5] / N38

Table 5: Working in heat (material behavior) - thermal limit
MPL 40x15x5x2[7/3.5] / N38

Table 6: Two magnets (attraction) - field range
MPL 40x15x5x2[7/3.5] / N38

Table 7: Protective zones (implants) - warnings
MPL 40x15x5x2[7/3.5] / N38

Table 8: Collisions (kinetic energy) - collision effects
MPL 40x15x5x2[7/3.5] / N38

Table 9: Surface protection spec
MPL 40x15x5x2[7/3.5] / N38

Table 10: Electrical data (Flux)
MPL 40x15x5x2[7/3.5] / N38

Table 11: Hydrostatics and buoyancy
MPL 40x15x5x2[7/3.5] / N38

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.