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MW 4x4 / N38 - cylindrical 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

cylindrical magnet

Catalog no 010076

GTIN/EAN: 5906301810759

5.00

Diameter Ø

4 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

0.38 g

Magnetization Direction

↑ axial

Load capacity

0.51 kg / 4.96 N

Magnetic Induction

552.79 mT / 5528 Gs

Coating

[NiCuNi] Nickel

technical details »

0.406 ZŁ with VAT / pcs + price for transport

0.330 ZŁ net + 23% VAT / pcs

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Technical details - MW 4x4 / N38 - cylindrical magnet

Specification / characteristics - MW 4x4 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010076
GTIN/EAN	5906301810759
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 Ø	4 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	0.38 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.51 kg / 4.96 N
Magnetic Induction ~ ?	552.79 mT / 5528 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 4x4 / N38 - cylindrical 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 modeling of the magnet - technical parameters

Presented data constitute the outcome of a physical simulation. Values rely on algorithms for the material Nd₂Fe₁₄B. Operational parameters might slightly differ. Please consider these calculations as a reference point for designers.

Table 1: Static pull force (force vs gap) - characteristics
MW 4x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5517 Gs 551.7 mT	0.51 kg / 1.12 pounds 510.0 g / 5.0 N	low risk
1 mm	2984 Gs 298.4 mT	0.15 kg / 0.33 pounds 149.2 g / 1.5 N	low risk
2 mm	1498 Gs 149.8 mT	0.04 kg / 0.08 pounds 37.6 g / 0.4 N	low risk
3 mm	803 Gs 80.3 mT	0.01 kg / 0.02 pounds 10.8 g / 0.1 N	low risk
5 mm	296 Gs 29.6 mT	0.00 kg / 0.00 pounds 1.5 g / 0.0 N	low risk
10 mm	58 Gs 5.8 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	low risk
15 mm	20 Gs 2.0 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk
20 mm	9 Gs 0.9 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk
30 mm	3 Gs 0.3 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk
50 mm	1 Gs 0.1 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk

Magnetic force decreases drastically with every subsequent millimeter of distance. Keep in mind that even a very thin break (e.g., contamination, paint, dust) strongly weakens the grip. Magnets hold strongest in perfect adhesion; distance drastically cuts the power. Notice how flashily the pull force drop, when the product does not adhere directly to the metal substrate. When planning the arrangement, eliminate additional spacers.

Table 2: Sliding hold (vertical surface)
MW 4x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.10 kg / 0.22 pounds 102.0 g / 1.0 N
1 mm	Stal (~0.2)	0.03 kg / 0.07 pounds 30.0 g / 0.3 N
2 mm	Stal (~0.2)	0.01 kg / 0.02 pounds 8.0 g / 0.1 N
3 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

The table below defines the estimated force sufficient to start the sliding of the magnet downwards along a vertical metal surface (assuming standard friction). This parameter is relative to the separation distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 4x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.15 kg / 0.34 pounds 153.0 g / 1.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.10 kg / 0.22 pounds 102.0 g / 1.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.05 kg / 0.11 pounds 51.0 g / 0.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.26 kg / 0.56 pounds 255.0 g / 2.5 N

When hanging a magnet on a vertical plane (e.g., a car body), it you can count on just approx. 1/5 of its maximum pull force. Gravity and a weak degree of grip cause that magnets slip easier than they pop off the substrate. Designing a hanger? Remember that the sliding force is significantly lower than the perpendicular breakaway force. On a smooth steel, the magnet will give way down under a much lighter weight. Using a rubber layer can effectively improve the result.

Table 4: Steel thickness (substrate influence) - power losses
MW 4x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.05 kg / 0.11 pounds 51.0 g / 0.5 N
1 mm	25%	0.13 kg / 0.28 pounds 127.5 g / 1.3 N
2 mm	50%	0.26 kg / 0.56 pounds 255.0 g / 2.5 N
3 mm	75%	0.38 kg / 0.84 pounds 382.5 g / 3.8 N
5 mm	100%	0.51 kg / 1.12 pounds 510.0 g / 5.0 N
10 mm	100%	0.51 kg / 1.12 pounds 510.0 g / 5.0 N
11 mm	100%	0.51 kg / 1.12 pounds 510.0 g / 5.0 N
12 mm	100%	0.51 kg / 1.12 pounds 510.0 g / 5.0 N

A too thin steel is incapable of take in the full magnetic flux, which weakens actual performance of the holder. Should you install a neodymium to a thin surface, the field will penetrate right through and the holding will be smaller. To squeeze full efficiency of this magnet's potential, you need a suitably thick element of steel. The saturation phenomenon causes that on sheet metal structures (e.g., thin profiles), the product shows lower pull force. We suggest choosing the steel thickness according to the table below.

Table 5: Thermal resistance (stability) - resistance threshold
MW 4x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.51 kg / 1.12 pounds 510.0 g / 5.0 N	OK
40 °C	-2.2%	0.50 kg / 1.10 pounds 498.8 g / 4.9 N	OK
60 °C	-4.4%	0.49 kg / 1.07 pounds 487.6 g / 4.8 N	OK
80 °C	-6.6%	0.48 kg / 1.05 pounds 476.3 g / 4.7 N
100 °C	-28.8%	0.36 kg / 0.80 pounds 363.1 g / 3.6 N

Classic neodymiums change their properties strength above the temperature limit. Avoid high temperatures – heat can permanently damage this magnet. As the temperature rises, the neodymium's capacity briefly lowers. Avoid using this magnet close to heaters exceeding its operating temperature limit. Too high temperature will lead to permanent loss of magnetism.

*Engineering note: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Flat magnets (pancake types) may lose charge permanently under lower heat stress than taller cylinders. Red status in the table signals permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - field collision
MW 4x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.36 kg / 5.20 pounds 5 984 Gs	0.35 kg / 0.78 pounds 354 g / 3.5 N	N/A
1 mm	1.34 kg / 2.96 pounds 8 324 Gs	0.20 kg / 0.44 pounds 201 g / 2.0 N	1.21 kg / 2.66 pounds ~0 Gs
2 mm	0.69 kg / 1.52 pounds 5 968 Gs	0.10 kg / 0.23 pounds 103 g / 1.0 N	0.62 kg / 1.37 pounds ~0 Gs
3 mm	0.34 kg / 0.76 pounds 4 213 Gs	0.05 kg / 0.11 pounds 52 g / 0.5 N	0.31 kg / 0.68 pounds ~0 Gs
5 mm	0.09 kg / 0.20 pounds 2 169 Gs	0.01 kg / 0.03 pounds 14 g / 0.1 N	0.08 kg / 0.18 pounds ~0 Gs
10 mm	0.01 kg / 0.01 pounds 592 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
20 mm	0.00 kg / 0.00 pounds 116 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 10 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.00 pounds 6 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
70 mm	0.00 kg / 0.00 pounds 4 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.00 pounds 3 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.00 pounds 2 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 1 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two strong neodymiums attract each other from a much further distance than a magnet and sheet combination. Such a system of magnet-to-magnet generates a stronger field and a larger range of action. Want to build a powerful holder? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when bringing together two magnets, the pinch force is massive. The levitation is slightly lower than the connection force, but still impressive.
*The magnetic induction for N-N configuration reaches ~0 Gs at the geometric center of the gap (resulting from vector opposition).
* Results refer to friction force of two identical magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - precautionary measures
MW 4x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	3.0 cm
Hearing aid	10 Gs (1.0 mT)	2.0 cm
Timepiece	20 Gs (2.0 mT)	2.0 cm
Mobile device	40 Gs (4.0 mT)	1.5 cm
Remote	50 Gs (5.0 mT)	1.5 cm
Payment card	400 Gs (40.0 mT)	0.5 cm
HDD hard drive	600 Gs (60.0 mT)	0.5 cm

Powerful magnet radiation is a large risk to electronic devices and medical implants. These NdFeB products generate a field that prevents correct functioning of digital equipment. Be aware: the unseen radiation penetrates the body and glass. Special caution must be exercised by people with hearing aids and insulin pumps. The risk also applies to: mechanical watches, remotes, speakers, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (cracking risk) - warning
MW 4x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	36.95 km/h (10.26 m/s)	0.02 J
30 mm	63.99 km/h (17.78 m/s)	0.06 J
50 mm	82.62 km/h (22.95 m/s)	0.10 J
100 mm	116.84 km/h (32.45 m/s)	0.20 J

Magnetic elements are prone to chipping – a collision with steel risks their cracking. Control the attraction moment – a neodymium left loose speeds with massive force. Impact energy can trigger coating fragments or dangerous crushing to skin. Hold the magnet firmly during installation so it doesn't hit violently against the steel surface. A collision at high speed ends with a crack of the neodymium. Use safety goggles when working with large magnets.

Table 9: Surface protection spec
MW 4x4 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

The following table defines the conditions under which this product can be safely used. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (Flux)
MW 4x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	717 Mx	7.2 µWb
P_c Coefficient	0.89	High (Stable)

Flux value passing through the magnet pole. Essential parameter in coil applications as well as sensors. P_c value determines the working geometry.

Table 11: Submerged application
MW 4x4 / N38

Environment	Effective steel pull	Effect
Air (land)	0.51 kg	Standard
Water (riverbed)	0.58 kg (+0.07 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. Vertical hold

*Warning: On a vertical surface, the magnet retains merely a fraction of its max power.

2. Steel thickness impact

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

3. Heat tolerance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.89

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%

Sustainability

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: 010076-2026

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The presented product is an exceptionally strong cylinder magnet, composed of durable NdFeB material, which, with dimensions of Ø4x4 mm, guarantees the highest energy density. This specific item boasts high dimensional repeatability and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 0.51 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, its Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is perfect for building electric motors, advanced Hall effect sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the pull force of 4.96 N with a weight of only 0.38 g, this rod is indispensable in electronics and wherever every gram matters.

Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure long-term durability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø4x4), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

This model is characterized by dimensions Ø4x4 mm, which, at a weight of 0.38 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 0.51 kg (force ~4.96 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.

Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 4 mm. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized through the diameter if your project requires it.

Strengths as well as weaknesses of neodymium magnets.

Advantages

Besides their exceptional magnetic power, neodymium magnets offer the following advantages:

They do not lose magnetism, even during nearly 10 years – the decrease in strength is only ~1% (according to tests),
Neodymium magnets are distinguished by exceptionally resistant to loss of magnetic properties caused by external field sources,
Thanks to the reflective finish, the coating of nickel, gold, or silver-plated gives an clean appearance,
Neodymium magnets ensure maximum magnetic induction on a contact point, which allows for strong attraction,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
Thanks to versatility in designing and the capacity to modify to client solutions,
Key role in future technologies – they are used in mass storage devices, brushless drives, medical devices, also technologically advanced constructions.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Drawbacks and weaknesses of neodymium magnets: weaknesses and usage proposals

At very strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
Due to limitations in creating nuts and complicated forms in magnets, we recommend using cover - magnetic mount.
Health risk to health – tiny shards of magnets can be dangerous, in case of ingestion, which becomes key in the context of child safety. Furthermore, tiny parts of these products are able to be problematic in diagnostics medical when they are in the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum lifting capacity of the magnet – what it depends on?

The load parameter shown concerns the peak performance, recorded under optimal environment, specifically:

on a plate made of structural steel, perfectly concentrating the magnetic field
with a cross-section of at least 10 mm
with a plane free of scratches
with zero gap (without impurities)
for force acting at a right angle (pull-off, not shear)
at ambient temperature room level

Lifting capacity in practice – influencing factors

During everyday use, the actual lifting capacity is determined by many variables, listed from most significant:

Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds much less (often approx. 20-30% of maximum force).
Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
Chemical composition of the base – mild steel attracts best. Higher carbon content lower magnetic properties and lifting capacity.
Surface quality – the smoother and more polished the surface, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under perpendicular forces, whereas under attempts to slide the magnet the holding force is lower. Additionally, even a small distance between the magnet and the plate lowers the holding force.

Precautions when working with NdFeB magnets

Cards and drives

Data protection: Neodymium magnets can ruin data carriers and sensitive devices (pacemakers, hearing aids, timepieces).

Do not drill into magnets

Dust generated during machining of magnets is self-igniting. Do not drill into magnets unless you are an expert.

Compass and GPS

GPS units and mobile phones are highly susceptible to magnetic fields. Direct contact with a strong magnet can decalibrate the internal compass in your phone.

Nickel allergy

A percentage of the population experience a hypersensitivity to nickel, which is the standard coating for NdFeB magnets. Extended handling may cause an allergic reaction. We strongly advise use protective gloves.

Medical interference

For implant holders: Powerful magnets affect electronics. Maintain at least 30 cm distance or request help to handle the magnets.

Swallowing risk

Neodymium magnets are not toys. Eating multiple magnets can lead to them pinching intestinal walls, which poses a direct threat to life and necessitates immediate surgery.

Demagnetization risk

Keep cool. Neodymium magnets are susceptible to heat. If you require operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Immense force

Handle with care. Rare earth magnets attract from a distance and connect with massive power, often faster than you can react.

Hand protection

Mind your fingers. Two powerful magnets will join instantly with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!

Shattering risk

Beware of splinters. Magnets can fracture upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.

Caution! Details about risks in the article: Safety of working with magnets.

MW 4x4 / N38 - cylindrical magnet

Technical details - MW 4x4 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the magnet - technical parameters

Table 1: Static pull force (force vs gap) - characteristics MW 4x4 / N38

Table 2: Sliding hold (vertical surface) MW 4x4 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MW 4x4 / N38

Table 4: Steel thickness (substrate influence) - power losses MW 4x4 / N38

Table 5: Thermal resistance (stability) - resistance threshold MW 4x4 / N38

Table 6: Two magnets (repulsion) - field collision MW 4x4 / N38

Table 7: Hazards (electronics) - precautionary measures MW 4x4 / N38

Table 8: Impact energy (cracking risk) - warning MW 4x4 / N38

Table 9: Surface protection spec MW 4x4 / N38

Table 10: Electrical data (Flux) MW 4x4 / N38

Table 11: Submerged application MW 4x4 / N38

1. Vertical hold

2. Steel thickness impact

3. Heat tolerance

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

Chemical composition

Sustainability

Pulling force

Magnetic Field

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Strengths as well as weaknesses of neodymium magnets.

Advantages

Disadvantages

Lifting parameters

Maximum lifting capacity of the magnet – what it depends on?

Lifting capacity in practice – influencing factors

Precautions when working with NdFeB magnets

Cards and drives

Do not drill into magnets

Compass and GPS

Nickel allergy

Medical interference

Swallowing risk

Demagnetization risk

Immense force

Hand protection

Shattering risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - characteristics
MW 4x4 / N38

Table 2: Sliding hold (vertical surface)
MW 4x4 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 4x4 / N38

Table 4: Steel thickness (substrate influence) - power losses
MW 4x4 / N38

Table 5: Thermal resistance (stability) - resistance threshold
MW 4x4 / N38

Table 6: Two magnets (repulsion) - field collision
MW 4x4 / N38

Table 7: Hazards (electronics) - precautionary measures
MW 4x4 / N38

Table 8: Impact energy (cracking risk) - warning
MW 4x4 / N38

Table 9: Surface protection spec
MW 4x4 / N38

Table 10: Electrical data (Flux)
MW 4x4 / N38

Table 11: Submerged application
MW 4x4 / N38