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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 details - 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 - technical parameters

The following information represent the result of a engineering calculation. Values rely on algorithms for the class Nd₂Fe₁₄B. Real-world performance might slightly deviate from the simulation results. Treat these calculations as a supplementary guide when designing systems.

Table 1: Static pull force (pull vs distance) - 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 LBS 350.0 g / 3.4 N	weak grip
1 mm	3280 Gs 328.0 mT	0.11 kg / 0.23 LBS 105.1 g / 1.0 N	weak grip
2 mm	1696 Gs 169.6 mT	0.03 kg / 0.06 LBS 28.1 g / 0.3 N	weak grip
3 mm	941 Gs 94.1 mT	0.01 kg / 0.02 LBS 8.7 g / 0.1 N	weak grip
5 mm	371 Gs 37.1 mT	0.00 kg / 0.00 LBS 1.3 g / 0.0 N	weak grip
10 mm	82 Gs 8.2 mT	0.00 kg / 0.00 LBS 0.1 g / 0.0 N	weak grip
15 mm	31 Gs 3.1 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip
20 mm	15 Gs 1.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip
30 mm	5 Gs 0.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip
50 mm	1 Gs 0.1 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip

Pulling power drops drastically per each millimeter of distance. Note that even a microscopic distance (e.g., contamination, varnish, rust) strongly diminishes the holding power. Neodymiums operate most effectively during direct contact; gap kills the force. Notice how quickly the load capacity plummet, when the magnet does not adhere tightly to the metal substrate. When planning the mounting, discard redundant distances.

Table 2: Slippage force (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 LBS 70.0 g / 0.7 N
1 mm	Stal (~0.2)	0.02 kg / 0.05 LBS 22.0 g / 0.2 N
2 mm	Stal (~0.2)	0.01 kg / 0.01 LBS 6.0 g / 0.1 N
3 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 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 table below presents the theoretical holding capacity sufficient to cause the downward movement of the magnet vertically on a vertical steel plate (assuming typical friction). This value is a function of the air gap between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
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 LBS 105.0 g / 1.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.07 kg / 0.15 LBS 70.0 g / 0.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.03 kg / 0.08 LBS 35.0 g / 0.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.18 kg / 0.39 LBS 175.0 g / 1.7 N

When hanging a magnet on a vertical wall (e.g., a fridge), it will only hold barely about 20%-30% of its maximum pull force. Gravity as well as a low friction coefficient mean that magnets slide down faster than they pull off. Planning a wall mount? Consider that the sliding force is significantly lower than the perpendicular breakaway force. On a slippery surface, the holder will give way down under a much lighter load. Using a rubber pad can effectively increase the grip.

Table 4: Steel thickness (saturation) - sheet metal selection
MW 4x8 / N38

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

A thin sheet is incapable of focus the entire magnetic field, which squanders power of the holder. Should you attach a powerful product to a weak sheet, the magnetism will penetrate right through and the pull force will drop sharply. To squeeze the maximum of this neodymium's power, you need a suitably thick piece of metal. The saturation phenomenon means that on delicate walls (e.g., thin profiles), the product shows lower pull force. We suggest choosing the steel cross-section according to the table below.

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 LBS 350.0 g / 3.4 N	OK
40 °C	-2.2%	0.34 kg / 0.75 LBS 342.3 g / 3.4 N	OK
60 °C	-4.4%	0.33 kg / 0.74 LBS 334.6 g / 3.3 N	OK
80 °C	-6.6%	0.33 kg / 0.72 LBS 326.9 g / 3.2 N
100 °C	-28.8%	0.25 kg / 0.55 LBS 249.2 g / 2.4 N

Ordinary NdFeB products change their properties parameters after exceeding the maximum temperature. Watch out for overheating – heat can irreversibly destroy this magnet. With every degree above norm, the neodymium's power temporarily drops. Refrain from using this product in hot environments higher than its safe range. Ignoring the limit will cause destruction of magnetism.

*Technical advisory: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Flat magnets (low permeance coefficient) may lose charge permanently under lower heat stress compared to rod magnets. The danger warning in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 4x8 / N38

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

Two strong neodymiums attract each other from a significantly greater distance than a neodymium and metal setup. The connection of two magnets generates a stronger field and a larger range of action. Want to build a strong closure? Use a pair of magnets instead of one magnet and a steel. Exercise caution that when connecting a pair of magnets, the impact force is extreme. The repulsion force is slightly lower than the connection force, but still significant.
*Flux density in repulsion mode reaches ~0 Gs at the geometric center of the gap (due to field cancellation).
Important: Estimates demonstrate friction force of dual same magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - 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
Timepiece	20 Gs (2.0 mT)	2.0 cm
Mobile device	40 Gs (4.0 mT)	1.5 cm
Car key	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 is a serious hazard to electronic devices as well as medical implants. These magnets produce a field that prevents correct functioning of digital equipment. Remember: the invisible magnetic field acts through matter and glass. Exceptional care must be exercised by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, car keys, membranes, and screens. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (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

Magnetic elements are prone to chipping – a collision with steel can result in shattering. Control the attraction moment – a neodymium left loose speeds with massive force. Impact energy can destroy the magnet or painful pinches 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 means shattering of the neodymium. Use safety goggles when working with large magnets.

Table 9: Corrosion resistance
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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Improper coating selection is the most common cause of magnet failure over time.

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 magnet pole. Key data for generator designers and motors. The P_c coefficient determines the magnet's operating point.

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: 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

*Caution: On a vertical surface, the magnet retains just a fraction of its perpendicular strength.

2. Steel saturation

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

3. Power loss vs temp

*For N38 material, 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

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.

Engineering data and GPSR

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: 010079-2026

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The presented product is an incredibly powerful cylinder magnet, manufactured from durable NdFeB material, which, with dimensions of Ø4x8 mm, guarantees maximum efficiency. The MW 4x8 / N38 model boasts a tolerance of ±0.1mm and industrial build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 0.35 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Additionally, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 3.48 N with a weight of only 0.75 g, this rod is indispensable in electronics and wherever every gram matters.

Since our magnets have a tolerance of ±0.1mm, the best method is to glue them into holes with a slightly larger diameter (e.g., 4.1 mm) using epoxy glues. 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.

Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. 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 available off-the-shelf 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 value of 3.48 N means that the magnet is capable of holding a weight many times exceeding its own mass of 0.75 g. The product has a [NiCuNi] coating, which secures it against external factors, 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 diametrically if your project requires it.

Strengths and weaknesses of Nd₂Fe₁₄B magnets.

Strengths

Besides their durability, neodymium magnets are valued for these benefits:

Their magnetic field is durable, and after around ten years it decreases only by ~1% (according to research),
They are extremely resistant to demagnetization induced by external magnetic fields,
In other words, due to the glossy finish of gold, the element looks attractive,
They feature high magnetic induction at the operating surface, which increases their power,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for operation at temperatures approaching 230°C and above...
Thanks to flexibility in constructing and the ability to modify to client solutions,
Key role in electronics industry – they are commonly used in magnetic memories, electromotive mechanisms, medical devices, and technologically advanced constructions.
Thanks to their power density, small magnets offer high operating force, with minimal size,

Weaknesses

Disadvantages of neodymium magnets:

To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their strength 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
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
We suggest cover - magnetic mount, due to difficulties in realizing nuts inside the magnet and complicated forms.
Health risk related to microscopic parts of magnets pose a threat, in case of ingestion, which gains importance in the context of child health protection. It is also worth noting that tiny parts of these products 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 hinders application in large quantities

Lifting parameters

Maximum magnetic pulling force – what affects it?

Information about lifting capacity is the result of a measurement for ideal contact conditions, including:

on a plate made of structural steel, optimally conducting the magnetic flux
possessing a massiveness of at least 10 mm to avoid saturation
with a surface cleaned and smooth
without the slightest insulating layer between the magnet and steel
during pulling in a direction vertical to the mounting surface
at conditions approx. 20°C

Lifting capacity in real conditions – factors

In real-world applications, the actual lifting capacity is determined by several key aspects, presented from crucial:

Distance – the presence of foreign body (paint, dirt, gap) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
Steel thickness – too thin plate does not close the flux, causing part of the flux to be wasted to the other side.
Steel grade – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
Plate texture – smooth surfaces ensure maximum contact, which increases field saturation. Uneven metal reduce efficiency.
Thermal conditions – 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 performed on a smooth plate of suitable thickness, under a perpendicular pulling force, however under shearing force the load capacity is reduced by as much as 75%. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.

H&S for magnets

Bone fractures

Watch your fingers. Two powerful magnets will join immediately with a force of massive weight, crushing everything in their path. Be careful!

Maximum temperature

Regular neodymium magnets (N-type) lose power when the temperature exceeds 80°C. This process is irreversible.

Magnetic interference

GPS units and mobile phones are highly sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Implant safety

For implant holders: Strong magnetic fields disrupt medical devices. Keep at least 30 cm distance or ask another person to handle the magnets.

Fire risk

Fire warning: Neodymium dust is highly flammable. Do not process magnets without safety gear as this risks ignition.

Magnet fragility

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Clashing of two magnets will cause them shattering into small pieces.

Swallowing risk

Neodymium magnets are not suitable for play. Swallowing a few magnets can lead to them pinching intestinal walls, which poses a critical condition and requires immediate surgery.

Magnetic media

Do not bring magnets close to a wallet, computer, or screen. The magnetism can irreversibly ruin these devices and wipe information from cards.

Metal Allergy

A percentage of the population suffer from a contact allergy to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching can result in a rash. It is best to use protective gloves.

Immense force

Handle magnets with awareness. Their immense force can surprise even professionals. Be vigilant and do not underestimate their force.

Attention! Details about hazards in the article: Magnet Safety Guide.

MW 4x8 / N38 - cylindrical magnet

Technical details - 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 - technical parameters

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

Table 2: Slippage force (vertical surface) MW 4x8 / N38

Table 3: Vertical assembly (shearing) - vertical pull MW 4x8 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MW 4x8 / N38

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

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system MW 4x8 / N38

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

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

Table 9: Corrosion resistance MW 4x8 / N38

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

Table 11: Hydrostatics and buoyancy MW 4x8 / N38

1. Sliding resistance

2. Steel saturation

3. Power loss vs temp

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

Elemental analysis

Environmental data

Pulling force

Field Strength

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Strengths and weaknesses of Nd2Fe14B magnets.

Strengths

Weaknesses

Lifting parameters

Maximum magnetic pulling force – what affects it?

Lifting capacity in real conditions – factors

H&S for magnets

Bone fractures

Maximum temperature

Magnetic interference

Implant safety

Fire risk

Magnet fragility

Swallowing risk

Magnetic media

Metal Allergy

Immense force

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Slippage force (vertical surface)
MW 4x8 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MW 4x8 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MW 4x8 / N38

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

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 4x8 / N38

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

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

Table 9: Corrosion resistance
MW 4x8 / N38

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

Table 11: Hydrostatics and buoyancy
MW 4x8 / N38

Strengths and weaknesses of Nd₂Fe₁₄B magnets.