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MW 8x4 / 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 010104

GTIN/EAN: 5906301811039

5.00

Diameter Ø

8 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

1.51 g

Magnetization Direction

↑ axial

Load capacity

2.04 kg / 20.00 N

Magnetic Induction

437.78 mT / 4378 Gs

Coating

[NiCuNi] Nickel

check technical specifications »

0.701 ZŁ with VAT / pcs + price for transport

0.570 ZŁ net + 23% VAT / pcs

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Detailed specification - MW 8x4 / N38 - cylindrical magnet

Specification / characteristics - MW 8x4 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010104
GTIN/EAN	5906301811039
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	8 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	1.51 g
Magnetization Direction	↑ axial
Load capacity ~ ?	2.04 kg / 20.00 N
Magnetic Induction ~ ?	437.78 mT / 4378 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 8x4 / 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

Technical simulation of the assembly - data

Presented values are the outcome of a mathematical analysis. Values were calculated on models for the material Nd₂Fe₁₄B. Operational conditions may differ. Please consider these data as a supplementary guide for designers.

Table 1: Static force (pull vs distance) - power drop
MW 8x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4374 Gs 437.4 mT	2.04 kg / 4.50 LBS 2040.0 g / 20.0 N	strong
1 mm	3338 Gs 333.8 mT	1.19 kg / 2.62 LBS 1187.8 g / 11.7 N	weak grip
2 mm	2386 Gs 238.6 mT	0.61 kg / 1.34 LBS 607.0 g / 6.0 N	weak grip
3 mm	1663 Gs 166.3 mT	0.29 kg / 0.65 LBS 294.9 g / 2.9 N	weak grip
5 mm	824 Gs 82.4 mT	0.07 kg / 0.16 LBS 72.4 g / 0.7 N	weak grip
10 mm	205 Gs 20.5 mT	0.00 kg / 0.01 LBS 4.5 g / 0.0 N	weak grip
15 mm	76 Gs 7.6 mT	0.00 kg / 0.00 LBS 0.6 g / 0.0 N	weak grip
20 mm	36 Gs 3.6 mT	0.00 kg / 0.00 LBS 0.1 g / 0.0 N	weak grip
30 mm	12 Gs 1.2 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip
50 mm	3 Gs 0.3 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip

Magnetic force drops sharply per each millimeter of spacing. Remember that even a very thin break (e.g., dirt, paint, rust) strongly weakens the grip. Magnets work most effectively during direct contact; distance drastically cuts the power. Notice how flashily the load capacity drop, when the product does not touch flatly to the metal substrate. When calculating the assembly, discard unnecessary gaps.

Table 2: Slippage capacity (vertical surface)
MW 8x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.41 kg / 0.90 LBS 408.0 g / 4.0 N
1 mm	Stal (~0.2)	0.24 kg / 0.52 LBS 238.0 g / 2.3 N
2 mm	Stal (~0.2)	0.12 kg / 0.27 LBS 122.0 g / 1.2 N
3 mm	Stal (~0.2)	0.06 kg / 0.13 LBS 58.0 g / 0.6 N
5 mm	Stal (~0.2)	0.01 kg / 0.03 LBS 14.0 g / 0.1 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

This section indicates the estimated shear load sufficient to cause the downward movement of the magnet down along a vertical steel wall (considering standard friction coefficient). The holding force depends on the distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 8x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.61 kg / 1.35 LBS 612.0 g / 6.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.41 kg / 0.90 LBS 408.0 g / 4.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.20 kg / 0.45 LBS 204.0 g / 2.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.02 kg / 2.25 LBS 1020.0 g / 10.0 N

When hanging a element on a vertical wall (e.g., a board), it will only hold barely approx. 1/5 of its nominal power. Gravitational force as well as a weak degree of grip influence the fact that products slide down easier than they pull off. Designing a vertical fastening? Consider that the sliding force is noticeably lower than the perpendicular breakaway force. On a painted metal, the element will slip down under a much lighter cargo. Utilizing a rubberized pad can effectively improve the result.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 8x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.20 kg / 0.45 LBS 204.0 g / 2.0 N
1 mm	25%	0.51 kg / 1.12 LBS 510.0 g / 5.0 N
2 mm	50%	1.02 kg / 2.25 LBS 1020.0 g / 10.0 N
3 mm	75%	1.53 kg / 3.37 LBS 1530.0 g / 15.0 N
5 mm	100%	2.04 kg / 4.50 LBS 2040.0 g / 20.0 N
10 mm	100%	2.04 kg / 4.50 LBS 2040.0 g / 20.0 N
11 mm	100%	2.04 kg / 4.50 LBS 2040.0 g / 20.0 N
12 mm	100%	2.04 kg / 4.50 LBS 2040.0 g / 20.0 N

A thin sheet cannot conduct the entire magnetic field, which weakens actual performance of the magnet. If you mount a strong magnet to a thin surface, the flux will penetrate right through and the pull force will drop sharply. To achieve the maximum of this magnet's potential, you require a sufficiently solid element of metal. The saturation effect means that on sheet metal structures (e.g., thin profiles), the holder shows lower pull force. We suggest choosing the steel thickness according to the table below.

Table 5: Working in heat (material behavior) - power drop
MW 8x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	2.04 kg / 4.50 LBS 2040.0 g / 20.0 N	OK
40 °C	-2.2%	2.00 kg / 4.40 LBS 1995.1 g / 19.6 N	OK
60 °C	-4.4%	1.95 kg / 4.30 LBS 1950.2 g / 19.1 N
80 °C	-6.6%	1.91 kg / 4.20 LBS 1905.4 g / 18.7 N
100 °C	-28.8%	1.45 kg / 3.20 LBS 1452.5 g / 14.2 N

Standard neodymium magnets change their properties power above the temperature limit. Watch out for overheating – heat can irreversibly damage this product. With every degree above norm, the magnet's capacity briefly drops. Refrain from using this product close to heaters exceeding its operating temperature limit. Ignoring the limit will result in destruction of magnetic properties.

*Engineering note: Temperature resistance depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (low permeance coefficient) are more susceptible to demagnetization under lower heat stress than taller cylinders. The danger warning in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - field range
MW 8x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	5.93 kg / 13.07 LBS 5 531 Gs	0.89 kg / 1.96 LBS 889 g / 8.7 N	N/A
1 mm	4.63 kg / 10.21 LBS 7 730 Gs	0.69 kg / 1.53 LBS 694 g / 6.8 N	4.17 kg / 9.18 LBS ~0 Gs
2 mm	3.45 kg / 7.61 LBS 6 675 Gs	0.52 kg / 1.14 LBS 518 g / 5.1 N	3.11 kg / 6.85 LBS ~0 Gs
3 mm	2.49 kg / 5.50 LBS 5 674 Gs	0.37 kg / 0.82 LBS 374 g / 3.7 N	2.25 kg / 4.95 LBS ~0 Gs
5 mm	1.23 kg / 2.72 LBS 3 989 Gs	0.18 kg / 0.41 LBS 185 g / 1.8 N	1.11 kg / 2.45 LBS ~0 Gs
10 mm	0.21 kg / 0.46 LBS 1 648 Gs	0.03 kg / 0.07 LBS 32 g / 0.3 N	0.19 kg / 0.42 LBS ~0 Gs
20 mm	0.01 kg / 0.03 LBS 410 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.03 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 39 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 24 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 15 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 11 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 8 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 6 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnetic products attract each other from a significantly greater distance than a magnet and steel setup. The connection of magnet-to-magnet produces a massive flux and a wider radius of operation. Designing a solid fastener? Use a pair of magnets instead of a neodymium and a striker plate. Remember that when bringing together two magnets, the collision energy is extreme. The levitation is marginally weaker than the connection force, but still large.
*The magnetic induction for N-N configuration is approximately ~0 Gs in the exact middle between the magnets (resulting from vector opposition).
* Figures demonstrate shear force of two same neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - warnings
MW 8x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	4.5 cm
Hearing aid	10 Gs (1.0 mT)	3.5 cm
Mechanical watch	20 Gs (2.0 mT)	2.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	2.0 cm
Car key	50 Gs (5.0 mT)	2.0 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

A strong magnetic field poses a serious hazard to electronic devices and pacemakers. These magnets generate a flux that disrupts operation of sensitive medical devices. Be aware: the unseen radiation passes through tissues and plastic. Special caution must be taken by people with cochlear implants and insulin pumps. Also at risk are: mechanical watches, car keys, membranes, and screens. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Collisions (cracking risk) - collision effects
MW 8x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	37.12 km/h (10.31 m/s)	0.08 J
30 mm	64.21 km/h (17.83 m/s)	0.24 J
50 mm	82.89 km/h (23.02 m/s)	0.40 J
100 mm	117.22 km/h (32.56 m/s)	0.80 J

Neodymium magnets are very brittle – a violent impact against metal causes immediate chipping. Control the attraction moment – a magnet released freely speeds with massive force. Impact energy can trigger coating fragments or injury to fingers. Hold the magnet firmly during mounting so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear safety glasses when handling with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 8x4 / 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: Electrical data (P_c)
MW 8x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	2 233 Mx	22.3 µWb
P_c Coefficient	0.59	Low (Flat)

Flux value passing through the pole surface. Essential parameter for generator designers and motors. P_c value determines the working geometry.

Table 11: Physics of underwater searching
MW 8x4 / N38

Environment	Effective steel pull	Effect
Air (land)	2.04 kg	Standard
Water (riverbed)	2.34 kg (+0.30 kg buoyancy gain)	+14.5%

Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Sliding resistance

*Caution: On a vertical wall, the magnet retains only a fraction of its max power.

2. Steel saturation

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

3. Power loss vs temp

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.59

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 and environmental data

Material specification

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: 010104-2026

Measurement Calculator

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Input a value into any field, and all other values convert instantly.

UMGGZ 34x6 [M4] GZ / N38 - rubber magnetic holder external thread

9.84 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 10x2 / N38 - cylindrical magnet

0.467 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

NC kulka fi 2 cale / N52 - neocube

1200.00 ZŁ brutto / pcs

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UMGW 60x30x15 [M10] GW / N38 - magnetic holder internal thread

102.96 ZŁ brutto / pcs

The presented product is a very strong cylindrical magnet, composed of durable NdFeB material, which, with dimensions of Ø8x4 mm, guarantees the highest energy density. The MW 8x4 / N38 component is characterized by high dimensional repeatability and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 2.04 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

It successfully proves itself in DIY projects, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 20.00 N with a weight of only 1.51 g, this rod is indispensable in miniature devices and wherever low weight is crucial.

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., 8.1 mm) using two-component epoxy glues. To ensure long-term durability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Grade N38 is the most popular standard for industrial neodymium magnets, offering a great economic balance and operational stability. If you need even stronger magnets in the same volume (Ø8x4), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 8 mm and height 4 mm. The value of 20.00 N means that the magnet is capable of holding a weight many times exceeding its own mass of 1.51 g. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 4 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized diametrically if your project requires it.

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.

Benefits

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

They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
They are resistant to demagnetization induced by external field influence,
In other words, due to the smooth layer of gold, the element gains visual value,
Magnetic induction on the surface of the magnet is very high,
Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures reaching 230°C and above...
Thanks to modularity in forming and the capacity to adapt to specific needs,
Key role in modern industrial fields – they are commonly used in data components, electromotive mechanisms, medical devices, and other advanced devices.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Limitations

Characteristics of disadvantages of neodymium magnets: application proposals

Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a steel housing, which not only protects them against impacts but also raises their durability
We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
They rust in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
We suggest cover - magnetic holder, due to difficulties in creating threads inside the magnet and complicated shapes.
Health risk to health – tiny shards of magnets are risky, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that small components of these magnets can disrupt the diagnostic process medical in case of swallowing.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum holding power of the magnet – what affects it?

Information about lifting capacity was determined for optimal configuration, taking into account:

with the use of a yoke made of special test steel, guaranteeing maximum field concentration
with a cross-section minimum 10 mm
characterized by smoothness
under conditions of gap-free contact (metal-to-metal)
during pulling in a direction vertical to the mounting surface
at temperature approx. 20 degrees Celsius

Lifting capacity in real conditions – factors

Please note that the magnet holding may be lower subject to the following factors, in order of importance:

Clearance – the presence of any layer (paint, tape, air) interrupts the magnetic circuit, which lowers capacity rapidly (even by 50% at 0.5 mm).
Direction of force – highest force is obtained only during pulling at a 90° angle. The shear force of the magnet along the plate is usually several times smaller (approx. 1/5 of the lifting capacity).
Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
Material type – ideal substrate is high-permeability steel. Cast iron may attract less.
Base smoothness – the more even the surface, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
Operating temperature – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate lowers the load capacity.

Safety rules for work with NdFeB magnets

Serious injuries

Risk of injury: The attraction force is so great that it can cause hematomas, crushing, and broken bones. Use thick gloves.

Nickel coating and allergies

Nickel alert: The nickel-copper-nickel coating consists of nickel. If skin irritation occurs, immediately stop working with magnets and use protective gear.

Keep away from children

Adult use only. Small elements pose a choking risk, leading to intestinal necrosis. Keep out of reach of kids and pets.

Magnets are brittle

Neodymium magnets are ceramic materials, which means they are prone to chipping. Clashing of two magnets leads to them cracking into small pieces.

Flammability

Drilling and cutting of neodymium magnets poses a fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Data carriers

Device Safety: Strong magnets can damage data carriers and sensitive devices (heart implants, hearing aids, mechanical watches).

ICD Warning

Warning for patients: Powerful magnets affect medical devices. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Do not overheat magnets

Monitor thermal conditions. Exposing the magnet to high heat will permanently weaken its properties and pulling force.

Do not underestimate power

Use magnets with awareness. Their immense force can surprise even experienced users. Plan your moves and respect their force.

Keep away from electronics

Note: neodymium magnets generate a field that interferes with sensitive sensors. Keep a separation from your mobile, tablet, and navigation systems.

Danger! Need more info? Check our post: Why are neodymium magnets dangerous?

MW 8x4 / N38 - cylindrical magnet

Detailed specification - MW 8x4 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the assembly - data

Table 1: Static force (pull vs distance) - power drop MW 8x4 / N38

Table 2: Slippage capacity (vertical surface) MW 8x4 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MW 8x4 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MW 8x4 / N38

Table 5: Working in heat (material behavior) - power drop MW 8x4 / N38

Table 6: Two magnets (repulsion) - field range MW 8x4 / N38

Table 7: Hazards (electronics) - warnings MW 8x4 / N38

Table 8: Collisions (cracking risk) - collision effects MW 8x4 / N38

Table 9: Anti-corrosion coating durability MW 8x4 / N38

Table 10: Electrical data (Pc) MW 8x4 / N38

Table 11: Physics of underwater searching MW 8x4 / N38

1. Sliding resistance

2. Steel saturation

3. Power loss vs temp

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

Material specification

Environmental data

Pulling force

Magnetic Field

See also products

UMGGZ 34x6 [M4] GZ / N38 - rubber magnetic holder external thread

MW 10x2 / N38 - cylindrical magnet

NC kulka fi 2 cale / N52 - neocube

UMGW 60x30x15 [M10] GW / N38 - magnetic holder internal thread

Strengths as well as weaknesses of Nd2Fe14B magnets.

Benefits

Limitations

Holding force characteristics

Maximum holding power of the magnet – what affects it?

Lifting capacity in real conditions – factors

Safety rules for work with NdFeB magnets

Serious injuries

Nickel coating and allergies

Keep away from children

Magnets are brittle

Flammability

Data carriers

ICD Warning

Do not overheat magnets

Do not underestimate power

Keep away from electronics

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - power drop
MW 8x4 / N38

Table 2: Slippage capacity (vertical surface)
MW 8x4 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 8x4 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 8x4 / N38

Table 5: Working in heat (material behavior) - power drop
MW 8x4 / N38

Table 6: Two magnets (repulsion) - field range
MW 8x4 / N38

Table 7: Hazards (electronics) - warnings
MW 8x4 / N38

Table 8: Collisions (cracking risk) - collision effects
MW 8x4 / N38

Table 9: Anti-corrosion coating durability
MW 8x4 / N38

Table 10: Electrical data (P_c)
MW 8x4 / N38

Table 11: Physics of underwater searching
MW 8x4 / N38

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.