Product available Ships today (order by 14:00)

MW 8x5 / 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 010105

GTIN/EAN: 5906301811046

5.00

Diameter Ø

8 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

1.88 g

Magnetization Direction

↑ axial

Load capacity

2.17 kg / 21.31 N

Magnetic Induction

483.41 mT / 4834 Gs

Coating

[NiCuNi] Nickel

view properties »

0.836 ZŁ with VAT / pcs + price for transport

0.680 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

0.680 ZŁ

0.836 ZŁ

price from 900 pcs

0.639 ZŁ

0.786 ZŁ

price from 3700 pcs

0.598 ZŁ

0.736 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure where to buy?

Call us +48 22 499 98 98 otherwise drop us a message via our online form the contact page.
Parameters as well as form of magnetic components can be verified on our magnetic mass calculator.

Same-day processing for orders placed before 14:00.

Technical data of the product - MW 8x5 / N38 - cylindrical magnet

Specification / characteristics - MW 8x5 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010105
GTIN/EAN	5906301811046
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	5 mm [±0,1 mm]
Weight	1.88 g
Magnetization Direction	↑ axial
Load capacity ~ ?	2.17 kg / 21.31 N
Magnetic Induction ~ ?	483.41 mT / 4834 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 8x5 / 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

These data are the outcome of a physical simulation. Values were calculated on models for the class Nd₂Fe₁₄B. Operational performance might slightly differ. Treat these data as a supplementary guide for designers.

Table 1: Static pull force (force vs distance) - power drop
MW 8x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4830 Gs 483.0 mT	2.17 kg / 4.78 LBS 2170.0 g / 21.3 N	strong
1 mm	3655 Gs 365.5 mT	1.24 kg / 2.74 LBS 1242.8 g / 12.2 N	low risk
2 mm	2610 Gs 261.0 mT	0.63 kg / 1.40 LBS 633.9 g / 6.2 N	low risk
3 mm	1825 Gs 182.5 mT	0.31 kg / 0.68 LBS 310.0 g / 3.0 N	low risk
5 mm	915 Gs 91.5 mT	0.08 kg / 0.17 LBS 77.9 g / 0.8 N	low risk
10 mm	234 Gs 23.4 mT	0.01 kg / 0.01 LBS 5.1 g / 0.1 N	low risk
15 mm	89 Gs 8.9 mT	0.00 kg / 0.00 LBS 0.7 g / 0.0 N	low risk
20 mm	43 Gs 4.3 mT	0.00 kg / 0.00 LBS 0.2 g / 0.0 N	low risk
30 mm	14 Gs 1.4 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk
50 mm	3 Gs 0.3 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk

Grip strength weakens significantly with every subsequent millimeter of distance. Note that even a microscopic distance (e.g., dirt, paint, veneer) strongly weakens the grip. Neodymiums work optimally at the point of direct contact; air break drastically cuts the force. See how flashily the load capacity drop, when the product does not adhere flatly to the metal substrate. When designing the assembly, discard redundant distances.

Table 2: Shear capacity (vertical surface)
MW 8x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.43 kg / 0.96 LBS 434.0 g / 4.3 N
1 mm	Stal (~0.2)	0.25 kg / 0.55 LBS 248.0 g / 2.4 N
2 mm	Stal (~0.2)	0.13 kg / 0.28 LBS 126.0 g / 1.2 N
3 mm	Stal (~0.2)	0.06 kg / 0.14 LBS 62.0 g / 0.6 N
5 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 16.0 g / 0.2 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 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 following data shows the estimated holding capacity sufficient to start the shifting of the magnet down on a upright steel plate (assuming standard friction coefficient). This value depends on the separation distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 8x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.65 kg / 1.44 LBS 651.0 g / 6.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.43 kg / 0.96 LBS 434.0 g / 4.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.22 kg / 0.48 LBS 217.0 g / 2.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.09 kg / 2.39 LBS 1085.0 g / 10.6 N

When placing a magnet on a upright wall (e.g., a fridge), it will only hold only about 1/5 of nominal attraction strength. Gravitational force and a low friction coefficient cause that products slide down faster than they detach. Designing a wall mount? Note that the sliding force is much weaker than the maximum static pull force. On a painted metal, the holder will slide down under a significantly smaller cargo. Utilizing a rubberized coating can drastically raise the stability.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 8x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.22 kg / 0.48 LBS 217.0 g / 2.1 N
1 mm	25%	0.54 kg / 1.20 LBS 542.5 g / 5.3 N
2 mm	50%	1.09 kg / 2.39 LBS 1085.0 g / 10.6 N
3 mm	75%	1.63 kg / 3.59 LBS 1627.5 g / 16.0 N
5 mm	100%	2.17 kg / 4.78 LBS 2170.0 g / 21.3 N
10 mm	100%	2.17 kg / 4.78 LBS 2170.0 g / 21.3 N
11 mm	100%	2.17 kg / 4.78 LBS 2170.0 g / 21.3 N
12 mm	100%	2.17 kg / 4.78 LBS 2170.0 g / 21.3 N

A thin sheet is unable to absorb the full magnetic flux, which wastes potential of the holder. If you install a neodymium to a too thin substrate, the field will pass right through and the holding will be smaller. To utilize 100% of this magnet's potential, you require a sufficiently solid piece of metal. The saturation phenomenon causes that on thin elements (e.g., thin profiles), the holder works worse. We advise picking the steel dimension from these parameters.

Table 5: Thermal stability (stability) - power drop
MW 8x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	2.17 kg / 4.78 LBS 2170.0 g / 21.3 N	OK
40 °C	-2.2%	2.12 kg / 4.68 LBS 2122.3 g / 20.8 N	OK
60 °C	-4.4%	2.07 kg / 4.57 LBS 2074.5 g / 20.4 N	OK
80 °C	-6.6%	2.03 kg / 4.47 LBS 2026.8 g / 19.9 N
100 °C	-28.8%	1.55 kg / 3.41 LBS 1545.0 g / 15.2 N

Classic neodymiums irreversibly lose strength above the temperature limit. Protect against heat – heat can permanently demagnetize this product. With every degree above norm, the magnet's force momentarily drops. Refrain from using this product close to heaters higher than its operating temperature limit. Too high temperature will lead to permanent loss of magnetism.

*Technical advisory: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Low-profile magnets (low permeance coefficient) are more susceptible to demagnetization sooner than taller cylinders. Warning indicator in the table indicates a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 8x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	7.23 kg / 15.94 LBS 5 742 Gs	1.08 kg / 2.39 LBS 1084 g / 10.6 N	N/A
1 mm	5.58 kg / 12.31 LBS 8 490 Gs	0.84 kg / 1.85 LBS 838 g / 8.2 N	5.03 kg / 11.08 LBS ~0 Gs
2 mm	4.14 kg / 9.13 LBS 7 310 Gs	0.62 kg / 1.37 LBS 621 g / 6.1 N	3.73 kg / 8.21 LBS ~0 Gs
3 mm	2.98 kg / 6.58 LBS 6 207 Gs	0.45 kg / 0.99 LBS 448 g / 4.4 N	2.69 kg / 5.92 LBS ~0 Gs
5 mm	1.48 kg / 3.26 LBS 4 369 Gs	0.22 kg / 0.49 LBS 222 g / 2.2 N	1.33 kg / 2.93 LBS ~0 Gs
10 mm	0.26 kg / 0.57 LBS 1 830 Gs	0.04 kg / 0.09 LBS 39 g / 0.4 N	0.23 kg / 0.51 LBS ~0 Gs
20 mm	0.02 kg / 0.04 LBS 468 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.03 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 47 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 29 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 19 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 13 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 9 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 7 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 magnet and sheet setup. The connection of two magnets generates a stronger field and a larger range of performance. Planning to create a powerful holder? Use a pair of magnets instead of a neodymium and a striker plate. Exercise caution that when attracting two neodymiums, the collision energy is massive. The repulsion force is marginally weaker than the attraction, but still impressive.
*Field value in repulsion mode is approximately ~0 Gs in the exact middle of the gap (due to field cancellation).
Attention: Figures show friction force of dual matching magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - warnings
MW 8x5 / 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)	3.0 cm
Mobile device	40 Gs (4.0 mT)	2.5 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 is a large risk to electronics as well as pacemakers. These neodymiums produce a field that prevents correct functioning of digital equipment. Notice: the unseen radiation passes through tissues and glass. Exceptional care must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, car keys, membranes, and screens. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MW 8x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	34.31 km/h (9.53 m/s)	0.09 J
30 mm	59.35 km/h (16.49 m/s)	0.26 J
50 mm	76.62 km/h (21.28 m/s)	0.43 J
100 mm	108.35 km/h (30.10 m/s)	0.85 J

Magnetic elements are delicate – a collision with steel risks their cracking. Watch the impact speed – a neodymium left loose turns into a projectile. Impact energy can destroy the magnet or dangerous crushing to skin. Always hold the magnet during bringing near metal so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear eye protection when playing with large magnets.

Table 9: Anti-corrosion coating durability
MW 8x5 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Flux)
MW 8x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	2 450 Mx	24.5 µWb
P_c Coefficient	0.68	High (Stable)

Total magnetic flux emitted by the magnet pole. Essential parameter for generator designers and motors. P_c value defines the working geometry.

Table 11: Physics of underwater searching
MW 8x5 / N38

Environment	Effective steel pull	Effect
Air (land)	2.17 kg	Standard
Water (riverbed)	2.48 kg (+0.31 kg buoyancy gain)	+14.5%

Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

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

1. Shear force

*Warning: On a vertical wall, the magnet retains just ~20% of its perpendicular strength.

2. Plate thickness effect

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

3. Thermal stability

*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) = 0.68

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.

Engineering data and GPSR

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%

Ecology and recycling (GPSR)

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: 010105-2026

Quick Unit Converter

Magnet pull force

Kilograms (kg)

Pounds (lbs)

Magnetic Induction

Gauss (Gs)

Insert a value in one of the inputs, to see the rest convert in real-time.

Other deals

Product available Ships today (order by 14:00)

MW 25x2.5 / N38 - cylindrical magnet

3.95 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MPL 15x3x6 / N38 - lamellar magnet

0.726 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MPL 100x40x20 / N38 - lamellar magnet

335.30 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

SM 25x150 [2xM8] / N52 - magnetic separator

467.40 ZŁ brutto / pcs

The offered product is an extremely powerful cylinder magnet, manufactured from advanced NdFeB material, which, with dimensions of Ø8x5 mm, guarantees maximum efficiency. This specific item is characterized by a tolerance of ±0.1mm and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 2.17 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Moreover, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

This model is perfect for building generators, advanced sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 21.31 N with a weight of only 1.88 g, this rod is indispensable in miniature devices and wherever low weight is crucial.

Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 8.1 mm) using two-component epoxy glues. To ensure stability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Magnets NdFeB grade N38 are suitable for the majority of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø8x5), 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 5 mm. The key parameter here is the lifting capacity amounting to approximately 2.17 kg (force ~21.31 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 rod magnet is magnetized axially (along the height of 5 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.

Pros as well as cons of neodymium magnets.

Benefits

In addition to their long-term stability, neodymium magnets provide the following advantages:

They have unchanged lifting capacity, and over around 10 years their performance decreases symbolically – ~1% (in testing),
They are noted for resistance to demagnetization induced by presence of other magnetic fields,
By covering with a reflective layer of gold, the element presents an nice look,
They feature high magnetic induction at the operating surface, making them more effective,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
Thanks to flexibility in shaping and the ability to adapt to unusual requirements,
Key role in modern technologies – they serve a role in HDD drives, drive modules, diagnostic systems, and industrial machines.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Problematic aspects of neodymium magnets: weaknesses and usage proposals

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as 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 rust. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
We recommend cover - magnetic holder, due to difficulties in creating nuts inside the magnet and complicated forms.
Potential hazard resulting from small fragments of magnets are risky, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, tiny parts of these products can be problematic in diagnostics medical in case of swallowing.
With large orders the cost of neodymium magnets is economically unviable,

Holding force characteristics

Highest magnetic holding force – what it depends on?

The load parameter shown refers to the maximum value, obtained under laboratory conditions, meaning:

on a plate made of structural steel, perfectly concentrating the magnetic flux
possessing a massiveness of at least 10 mm to ensure full flux closure
with an ground contact surface
with zero gap (no coatings)
under axial force vector (90-degree angle)
at standard ambient temperature

Lifting capacity in practice – influencing factors

In real-world applications, the actual holding force is determined by several key aspects, listed from crucial:

Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
Direction of force – maximum parameter is reached only during perpendicular pulling. The force required to slide of the magnet along the plate is standardly many times lower (approx. 1/5 of the lifting capacity).
Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
Steel grade – the best choice is pure iron steel. Hardened steels may have worse magnetic properties.
Base smoothness – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Roughness creates an air distance.
Heat – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under perpendicular forces, in contrast under parallel forces the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Safety rules for work with NdFeB magnets

Physical harm

Large magnets can break fingers instantly. Never place your hand between two attracting surfaces.

Safe operation

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

No play value

Neodymium magnets are not intended for children. Eating several magnets may result in them pinching intestinal walls, which constitutes a critical condition and requires urgent medical intervention.

Heat warning

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

Electronic devices

Device Safety: Neodymium magnets can damage data carriers and delicate electronics (pacemakers, hearing aids, mechanical watches).

Avoid contact if allergic

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction happens, cease handling magnets and use protective gear.

Material brittleness

Despite the nickel coating, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Health Danger

Warning for patients: Powerful magnets affect electronics. Maintain minimum 30 cm distance or request help to work with the magnets.

Precision electronics

An intense magnetic field interferes with the functioning of magnetometers in phones and GPS navigation. Do not bring magnets close to a smartphone to avoid breaking the sensors.

Fire warning

Drilling and cutting of neodymium magnets poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Attention! Want to know more? Check our post: Are neodymium magnets dangerous?

MW 8x5 / N38 - cylindrical magnet

Technical data of the product - MW 8x5 / 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 distance) - power drop MW 8x5 / N38

Table 2: Shear capacity (vertical surface) MW 8x5 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MW 8x5 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MW 8x5 / N38

Table 5: Thermal stability (stability) - power drop MW 8x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MW 8x5 / N38

Table 7: Hazards (electronics) - warnings MW 8x5 / N38

Table 8: Collisions (kinetic energy) - warning MW 8x5 / N38

Table 9: Anti-corrosion coating durability MW 8x5 / N38

Table 10: Electrical data (Flux) MW 8x5 / N38

Table 11: Physics of underwater searching MW 8x5 / N38

1. Shear force

2. Plate thickness effect

3. Thermal stability

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

Material specification

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Induction

Other deals

MW 25x2.5 / N38 - cylindrical magnet

MPL 15x3x6 / N38 - lamellar magnet

MPL 100x40x20 / N38 - lamellar magnet

SM 25x150 [2xM8] / N52 - magnetic separator

Pros as well as cons of neodymium magnets.

Benefits

Weaknesses

Holding force characteristics

Highest magnetic holding force – what it depends on?

Lifting capacity in practice – influencing factors

Safety rules for work with NdFeB magnets

Physical harm

Safe operation

No play value

Heat warning

Electronic devices

Avoid contact if allergic

Material brittleness

Health Danger

Precision electronics

Fire warning

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - power drop
MW 8x5 / N38

Table 2: Shear capacity (vertical surface)
MW 8x5 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 8x5 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 8x5 / N38

Table 5: Thermal stability (stability) - power drop
MW 8x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 8x5 / N38

Table 7: Hazards (electronics) - warnings
MW 8x5 / N38

Table 8: Collisions (kinetic energy) - warning
MW 8x5 / N38

Table 9: Anti-corrosion coating durability
MW 8x5 / N38

Table 10: Electrical data (Flux)
MW 8x5 / N38

Table 11: Physics of underwater searching
MW 8x5 / N38