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MW 4x8 / N38 - cylindrical magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN
Rating: 5

cylindrical magnet

Catalog no 010079

GTIN/EAN: 5906301810780

5.00

Diameter Ø

4 mm [±0,1 mm]

Height

8 mm [±0,1 mm]

Weight

0.75 g

Magnetization Direction

↑ axial

Load capacity

0.35 kg / 3.48 N

Magnetic Induction

599.59 mT / 5996 Gs

Coating

[NiCuNi] Nickel

product parameters »

0.701 ZŁ with VAT / pcs + price for transport

0.570 ZŁ net + 23% VAT / pcs

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Technical parameters - MW 4x8 / N38 - cylindrical magnet

Specification / characteristics - MW 4x8 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010079
GTIN/EAN	5906301810780
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	8 mm [±0,1 mm]
Weight	0.75 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.35 kg / 3.48 N
Magnetic Induction ~ ?	599.59 mT / 5996 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 4x8 / 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 simulation of the assembly - report

These values constitute the outcome of a mathematical analysis. Values rely on models for the material Nd₂Fe₁₄B. Operational conditions may deviate from the simulation results. Use these calculations as a reference point when designing systems.

Table 1: Static pull force (force vs gap) - power drop
MW 4x8 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5984 Gs 598.4 mT	0.35 kg / 0.77 pounds 350.0 g / 3.4 N	low risk
1 mm	3280 Gs 328.0 mT	0.11 kg / 0.23 pounds 105.1 g / 1.0 N	low risk
2 mm	1696 Gs 169.6 mT	0.03 kg / 0.06 pounds 28.1 g / 0.3 N	low risk
3 mm	941 Gs 94.1 mT	0.01 kg / 0.02 pounds 8.7 g / 0.1 N	low risk
5 mm	371 Gs 37.1 mT	0.00 kg / 0.00 pounds 1.3 g / 0.0 N	low risk
10 mm	82 Gs 8.2 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	low risk
15 mm	31 Gs 3.1 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk
20 mm	15 Gs 1.5 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk
30 mm	5 Gs 0.5 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

Grip strength drops drastically with every subsequent millimeter of distance. Keep in mind that even the smallest gap (e.g., contamination, varnish, dust) strongly reduces the pull force. Magnetic products operate strongest in perfect adhesion; air break kills the power. Notice how rapidly the load capacity drop, when the magnet does not touch flatly to the steel surface. When planning the arrangement, eliminate redundant distances.

Table 2: Shear hold (vertical surface)
MW 4x8 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.07 kg / 0.15 pounds 70.0 g / 0.7 N
1 mm	Stal (~0.2)	0.02 kg / 0.05 pounds 22.0 g / 0.2 N
2 mm	Stal (~0.2)	0.01 kg / 0.01 pounds 6.0 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

This section presents the theoretical force required to cause the shifting of the magnet vertically on a vertical steel plate (considering typical friction). This parameter is relative to the air gap between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 4x8 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.11 kg / 0.23 pounds 105.0 g / 1.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.07 kg / 0.15 pounds 70.0 g / 0.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.03 kg / 0.08 pounds 35.0 g / 0.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.18 kg / 0.39 pounds 175.0 g / 1.7 N

When placing a magnet on a vertical wall (e.g., a board), it you can count on barely approx. 20%-30% of nominal attraction strength. Gravity and a low friction coefficient cause that products slip easier than they pop off the substrate. Planning a vertical fastening? Consider that the sliding force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will slide down under a significantly smaller weight. Application of an anti-slip pad can significantly improve the result.

Table 4: Steel thickness (substrate influence) - power losses
MW 4x8 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.03 kg / 0.08 pounds 35.0 g / 0.3 N
1 mm	25%	0.09 kg / 0.19 pounds 87.5 g / 0.9 N
2 mm	50%	0.18 kg / 0.39 pounds 175.0 g / 1.7 N
3 mm	75%	0.26 kg / 0.58 pounds 262.5 g / 2.6 N
5 mm	100%	0.35 kg / 0.77 pounds 350.0 g / 3.4 N
10 mm	100%	0.35 kg / 0.77 pounds 350.0 g / 3.4 N
11 mm	100%	0.35 kg / 0.77 pounds 350.0 g / 3.4 N
12 mm	100%	0.35 kg / 0.77 pounds 350.0 g / 3.4 N

A thin metal plate cannot absorb the entire magnetic field, which weakens actual performance of the holder. If you install a neodymium to a too thin substrate, the field will penetrate right through and the attraction force will be weaker. To squeeze the maximum of this neodymium's potential, you need a suitably thick element of steel. The saturation effect means that on sheet metal structures (e.g., car bodies), the holder works worse. We advise picking the steel cross-section from these parameters.

Table 5: Thermal resistance (material behavior) - power drop
MW 4x8 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.35 kg / 0.77 pounds 350.0 g / 3.4 N	OK
40 °C	-2.2%	0.34 kg / 0.75 pounds 342.3 g / 3.4 N	OK
60 °C	-4.4%	0.33 kg / 0.74 pounds 334.6 g / 3.3 N	OK
80 °C	-6.6%	0.33 kg / 0.72 pounds 326.9 g / 3.2 N
100 °C	-28.8%	0.25 kg / 0.55 pounds 249.2 g / 2.4 N

Classic neodymiums lose power past the thermal threshold. Avoid high temperatures – heat can permanently destroy this product. With every degree above norm, the magnet's power temporarily drops. Do not use this product close to ovens higher than its operating temperature limit. Ignoring the limit will cause permanent loss of magnetism.

*Engineering note: Thermal stability is determined by both grade, as well as the dimension ratios. Thin magnets (pancake types) are more susceptible to demagnetization under lower heat stress than taller cylinders. Warning indicator in the table indicates permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - field range
MW 4x8 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.77 kg / 6.12 pounds 6 121 Gs	0.42 kg / 0.92 pounds 416 g / 4.1 N	N/A
1 mm	1.59 kg / 3.51 pounds 9 063 Gs	0.24 kg / 0.53 pounds 239 g / 2.3 N	1.43 kg / 3.16 pounds ~0 Gs
2 mm	0.83 kg / 1.84 pounds 6 559 Gs	0.12 kg / 0.28 pounds 125 g / 1.2 N	0.75 kg / 1.65 pounds ~0 Gs
3 mm	0.43 kg / 0.94 pounds 4 694 Gs	0.06 kg / 0.14 pounds 64 g / 0.6 N	0.38 kg / 0.85 pounds ~0 Gs
5 mm	0.12 kg / 0.27 pounds 2 498 Gs	0.02 kg / 0.04 pounds 18 g / 0.2 N	0.11 kg / 0.24 pounds ~0 Gs
10 mm	0.01 kg / 0.02 pounds 743 Gs	0.00 kg / 0.00 pounds 2 g / 0.0 N	0.01 kg / 0.02 pounds ~0 Gs
20 mm	0.00 kg / 0.00 pounds 165 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 17 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 10 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 7 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 5 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 3 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 3 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnets interact from a much further distance than a magnet and sheet combination. Such a system of two magnets produces a massive flux and a further horizon of performance. Designing a strong closure? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when connecting a pair of magnets, the collision energy is huge. The levitation is a bit weaker than the attraction, but still impressive.
*Field value in repulsion mode reaches ~0 Gs at the geometric center of the gap (resulting from vector opposition).
Important: Calculations apply to friction force of two same magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - warnings
MW 4x8 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	3.5 cm
Hearing aid	10 Gs (1.0 mT)	2.5 cm
Mechanical watch	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

Extremely neodym field poses a real danger to IT equipment as well as pacemakers. These neodymiums produce a field that disrupts operation of digital equipment. Notice: the unseen radiation acts through matter and plastic. Increased vigilance must be exercised by people with cochlear implants and insulin pumps. Also at risk are: mechanical watches, car keys, membranes, and screens. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - collision effects
MW 4x8 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	21.79 km/h (6.05 m/s)	0.01 J
30 mm	37.74 km/h (10.48 m/s)	0.04 J
50 mm	48.72 km/h (13.53 m/s)	0.07 J
100 mm	68.89 km/h (19.14 m/s)	0.14 J

Neodymium magnets are delicate – a violent impact against metal can result in shattering. Pay attention to connection velocity – a magnet released freely turns into a projectile. Striking energy can trigger coating fragments or dangerous crushing to skin. Be sure to control the product during installation so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear safety glasses when working with powerful specimens.

Table 9: Surface protection spec
MW 4x8 / 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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (P_c)
MW 4x8 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	836 Mx	8.4 µWb
P_c Coefficient	1.21	High (Stable)

Flux value passing through the pole surface. Essential parameter in coil applications as well as sensors. The P_c coefficient defines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 4x8 / N38

Environment	Effective steel pull	Effect
Air (land)	0.35 kg	Standard
Water (riverbed)	0.40 kg (+0.05 kg buoyancy gain)	+14.5%

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

Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Shear force

*Note: On a vertical surface, the magnet holds only ~20% of its max power.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) significantly weakens the holding force.

3. Heat tolerance

*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) = 1.21

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: 010079-2026

Magnet Unit Converter

Force (pull)

Newtons (N)

lbs

Field Strength

Gauss (Gs)

Just fill in one field, and the tool calculate everything else automatically.

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UMT 20x25 black / N38 - board holder

3.49 ZŁ brutto / pcs

The offered product is an extremely powerful cylindrical magnet, manufactured from durable NdFeB material, which, with dimensions of Ø4x8 mm, guarantees the highest energy density. The MW 4x8 / N38 component is characterized by an accuracy of ±0.1mm and industrial build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with significant force (approx. 0.35 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is ideal for building generators, advanced Hall effect sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 3.48 N with a weight of only 0.75 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.

Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure long-term durability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Magnets N38 are suitable for the majority of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø4x8), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

This model is characterized by dimensions Ø4x8 mm, which, at a weight of 0.75 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 0.35 kg (force ~3.48 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 8 mm), which means that the N and S poles are located on the flat, circular surfaces. 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 Nd₂Fe₁₄B magnets.

Benefits

In addition to their pulling strength, neodymium magnets provide the following advantages:

Their power is durable, and after approximately ten years it drops only by ~1% (according to research),
Magnets perfectly defend themselves against demagnetization caused by ambient magnetic noise,
Thanks to the metallic finish, the coating of nickel, gold-plated, or silver-plated gives an modern appearance,
Magnetic induction on the working layer of the magnet turns out to be impressive,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for operation at temperatures reaching 230°C and above...
Thanks to flexibility in shaping and the ability to modify to individual projects,
Key role in electronics industry – they are used in HDD drives, brushless drives, advanced medical instruments, also technologically advanced constructions.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which enables their usage in miniature devices

Weaknesses

Cons of neodymium magnets and ways of using them

They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
Limited ability of producing nuts in the magnet and complicated forms - preferred is cover - magnetic holder.
Potential hazard resulting from small fragments of magnets are risky, if swallowed, which gains importance in the context of child health protection. Furthermore, small components of these magnets can complicate diagnosis medical when they are in the body.
With budget limitations the cost of neodymium magnets is a challenge,

Lifting parameters

Maximum lifting force for a neodymium magnet – what affects it?

Magnet power was determined for optimal configuration, including:

with the application of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
possessing a massiveness of minimum 10 mm to avoid saturation
characterized by even structure
with zero gap (no impurities)
for force acting at a right angle (in the magnet axis)
in temp. approx. 20°C

Determinants of practical lifting force of a magnet

In real-world applications, the real power is determined by a number of factors, presented from crucial:

Distance – existence of foreign body (paint, dirt, air) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
Plate material – low-carbon steel attracts best. Higher carbon content decrease magnetic permeability and holding force.
Smoothness – ideal contact is obtained only on smooth steel. Rough texture create air cushions, reducing force.
Temperature influence – hot environment reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity was measured with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, however under shearing force the lifting capacity is smaller. In addition, even a small distance between the magnet and the plate decreases the load capacity.

Precautions when working with neodymium magnets

Do not underestimate power

Be careful. Neodymium magnets attract from a long distance and snap with massive power, often quicker than you can react.

Product not for children

Always store magnets away from children. Choking hazard is high, and the effects of magnets clamping inside the body are very dangerous.

Material brittleness

Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Warning for allergy sufferers

Medical facts indicate that the nickel plating (the usual finish) is a common allergen. If your skin reacts to metals, prevent touching magnets with bare hands and select versions in plastic housing.

Fire warning

Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this may cause fire.

Pacemakers

People with a pacemaker have to maintain an safe separation from magnets. The magnetic field can stop the operation of the life-saving device.

GPS and phone interference

Be aware: neodymium magnets generate a field that confuses sensitive sensors. Keep a separation from your mobile, tablet, and navigation systems.

Permanent damage

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

Bodily injuries

Large magnets can smash fingers instantly. Never place your hand betwixt two attracting surfaces.

Magnetic media

Equipment safety: Neodymium magnets can damage payment cards and delicate electronics (heart implants, medical aids, mechanical watches).

Caution! Looking for details? Check our post: Why are neodymium magnets dangerous?

MW 4x8 / N38 - cylindrical magnet

Technical parameters - MW 4x8 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering simulation of the assembly - report

Table 1: Static pull force (force vs gap) - power drop MW 4x8 / N38

Table 2: Shear hold (vertical surface) MW 4x8 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MW 4x8 / N38

Table 4: Steel thickness (substrate influence) - power losses MW 4x8 / N38

Table 5: Thermal resistance (material behavior) - power drop MW 4x8 / N38

Table 6: Two magnets (repulsion) - field range MW 4x8 / N38

Table 7: Protective zones (electronics) - warnings MW 4x8 / N38

Table 8: Collisions (cracking risk) - collision effects MW 4x8 / N38

Table 9: Surface protection spec MW 4x8 / N38

Table 10: Construction data (Pc) MW 4x8 / N38

Table 11: Hydrostatics and buoyancy MW 4x8 / N38

1. Shear force

2. Efficiency vs thickness

3. Heat tolerance

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

Chemical composition

Sustainability

Force (pull)

Field Strength

Other proposals

MPL 5x5x1.2 / N38 - lamellar magnet

MPL 10x7x3 / N38 - lamellar magnet

HH 36x7.5 [M6] / N38 - through hole magnetic holder

UMT 20x25 black / N38 - board holder

Strengths as well as weaknesses of Nd2Fe14B magnets.

Benefits

Weaknesses

Lifting parameters

Maximum lifting force for a neodymium magnet – what affects it?

Determinants of practical lifting force of a magnet

Precautions when working with neodymium magnets

Do not underestimate power

Product not for children

Material brittleness

Warning for allergy sufferers

Fire warning

Pacemakers

GPS and phone interference

Permanent damage

Bodily injuries

Magnetic media

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - power drop
MW 4x8 / N38

Table 2: Shear hold (vertical surface)
MW 4x8 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 4x8 / N38

Table 4: Steel thickness (substrate influence) - power losses
MW 4x8 / N38

Table 5: Thermal resistance (material behavior) - power drop
MW 4x8 / N38

Table 6: Two magnets (repulsion) - field range
MW 4x8 / N38

Table 7: Protective zones (electronics) - warnings
MW 4x8 / N38

Table 8: Collisions (cracking risk) - collision effects
MW 4x8 / N38

Table 9: Surface protection spec
MW 4x8 / N38

Table 10: Construction data (P_c)
MW 4x8 / N38

Table 11: Hydrostatics and buoyancy
MW 4x8 / N38

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.