Product available Ships tomorrow

MW 8x4 / 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 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

product specifications »

0.701 ZŁ with VAT / pcs + price for transport

0.570 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

0.570 ZŁ

0.701 ZŁ

price from 875 pcs

0.513 ZŁ

0.631 ZŁ

price from 1750 pcs

0.502 ZŁ

0.617 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure where to buy?

Call us now +48 888 99 98 98 or contact us by means of inquiry form the contact form page.
Strength along with structure of a magnet can be verified using our modular calculator.

Order by 14:00 and we’ll ship today!

Product card - 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

These values are the outcome of a engineering simulation. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Real-world conditions may deviate from the simulation results. Please consider these data as a preliminary roadmap during assembly planning.

Table 1: Static force (pull vs distance) - interaction chart
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	low risk
2 mm	2386 Gs 238.6 mT	0.61 kg / 1.34 LBS 607.0 g / 6.0 N	low risk
3 mm	1663 Gs 166.3 mT	0.29 kg / 0.65 LBS 294.9 g / 2.9 N	low risk
5 mm	824 Gs 82.4 mT	0.07 kg / 0.16 LBS 72.4 g / 0.7 N	low risk
10 mm	205 Gs 20.5 mT	0.00 kg / 0.01 LBS 4.5 g / 0.0 N	low risk
15 mm	76 Gs 7.6 mT	0.00 kg / 0.00 LBS 0.6 g / 0.0 N	low risk
20 mm	36 Gs 3.6 mT	0.00 kg / 0.00 LBS 0.1 g / 0.0 N	low risk
30 mm	12 Gs 1.2 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

Magnetic force decreases significantly per each millimeter of gap. Keep in mind that even a microscopic distance (e.g., dirt, paint, veneer) strongly diminishes the holding power. Magnetic products work strongest at the point of direct contact; distance nullifies the force. Notice how flashily the load capacity plummet, when the magnet does not adhere directly to the steel surface. When planning the mounting, discard unnecessary gaps.

Table 2: Sliding 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

The following data calculates the approximate shear load sufficient to initiate the downward movement of the magnet vertically against a vertical steel plate (assuming typical friction). The holding force varies with the separation distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
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 mounting a magnet on a upright surface (e.g., a fridge), it will only hold just approx. 1/5 of its nominal power. Gravity and a weak degree of grip influence the fact that magnets slide down faster than they pop off the substrate. Want to create a vertical fastening? Consider that the sliding force is much weaker than the perpendicular breakaway force. On a smooth steel, the element will slip down under a noticeably lighter cargo. Application of an anti-slip pad can effectively increase the grip.

Table 4: Material efficiency (saturation) - 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 metal plate is unable to focus the full magnetic flux, which weakens actual performance of the holder. If you install a neodymium to a weak sheet, the flux will pass right through and the holding will be smaller. To squeeze 100% of this magnet's power, you require a sufficiently solid backing of steel. The saturation effect means that on delicate walls (e.g., car bodies), the product shows lower pull force. We advise picking the steel cross-section according to the table below.

Table 5: Thermal stability (stability) - 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 lose parameters after exceeding the maximum temperature. Watch out for overheating – excessive heat can permanently destroy this magnet. With increasing heat, the magnet's capacity briefly decreases. Avoid using this magnet near heat sources exceeding its operating temperature limit. Ignoring the limit will result in destruction of magnetism.

*Engineering note: Temperature resistance is determined by both grade, but also on the magnet's shape. Thin magnets (low Pc) may lose charge permanently at lower temperatures than long magnets. Warning indicator in the table indicates permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 8x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (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 magnets interact from a wider radius than a neodymium and metal combination. The setup of magnet-to-magnet produces a massive flux and a wider radius of operation. Want to build a powerful holder? Utilize two neodymiums instead of one magnet and a steel. Be careful that when bringing together two magnets, the impact force is extreme. The repulsion force is marginally weaker than the attraction, but still large.
*The magnetic induction for N-N configuration drops to ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
Important: Results demonstrate friction force of dual same magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - precautionary measures
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
Timepiece	20 Gs (2.0 mT)	2.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	2.0 cm
Remote	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 large risk to electronics as well as pacemakers. These NdFeB products produce a field that prevents correct functioning of digital equipment. Remember: the invisible magnetic field acts through matter and plastic. Increased vigilance must be taken by people with hearing aids and drug dispensers. Also at risk are: mechanical watches, remotes, speakers, and displays. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - warning
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 delicate – a strong collision with metal risks their cracking. Watch the impact speed – a magnet released freely turns into a projectile. Striking energy can cause material chips 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 means shattering of the neodymium. Use safety goggles when working with powerful specimens.

Table 9: Corrosion resistance
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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

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 emitted by the pole surface. Essential parameter in coil applications and motors. P_c value determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
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: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

In water, the magnet feels stronger thanks to Archimedes' principle. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

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

2. Steel saturation

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

3. Thermal stability

*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) = 0.59

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.

Technical and environmental data

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%

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: 010104-2026

Measurement Calculator

Pulling force

Kilograms (kg)

Force (N)

lbs

Field Strength

Induction (T)

Just complete any input, and the calculator calculate the rest instantly.

Other deals

Product available Ships tomorrow

NCM 10x13.5x5 / N38 - channel magnetic holder

3.39 ZŁ brutto / pcs

Product available Ships tomorrow

MPL 10x10x10 / N38 - lamellar magnet

5.29 ZŁ brutto / pcs

Product available Ships tomorrow

UMP 94x40 [3xM10] GW F550 Silver Black / N52 - search holder

350.00 ZŁ brutto / pcs

Product available Ships tomorrow

MW 10x2 / N38 - cylindrical magnet

0.467 ZŁ brutto / pcs

This product is an incredibly powerful cylinder magnet, composed of advanced NdFeB material, which, at dimensions of Ø8x4 mm, guarantees the highest energy density. This specific item features a tolerance of ±0.1mm and industrial build quality, making it an excellent solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 2.04 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is created for building electric motors, advanced sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the pull force of 20.00 N with a weight of only 1.51 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.

Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure stability 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 NdFeB grade N38 are strong enough for the majority of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest 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.

This model is characterized by dimensions Ø8x4 mm, which, at a weight of 1.51 g, makes it an element with high magnetic energy density. 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 secures it against external factors, giving it an aesthetic, silvery shine.

This cylinder 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.

Advantages and disadvantages of rare earth magnets.

Strengths

Besides their high retention, neodymium magnets are valued for these benefits:

Their strength is durable, and after around 10 years it drops only by ~1% (according to research),
They are extremely resistant to demagnetization induced by external magnetic fields,
In other words, due to the aesthetic finish of silver, the element becomes visually attractive,
Magnetic induction on the working part of the magnet turns out to be strong,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Considering the potential of precise molding and customization to specialized needs, NdFeB magnets can be manufactured in a variety of forms and dimensions, which increases their versatility,
Versatile presence in high-tech industry – they are commonly used in computer drives, electric motors, medical equipment, also technologically advanced constructions.
Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which enables their usage in miniature devices

Limitations

Disadvantages of neodymium magnets:

At very strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
Limited ability of creating nuts in the magnet and complex shapes - preferred is a housing - magnetic holder.
Health risk to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child safety. It is also worth noting that small components of these products are able to complicate diagnosis medical in case of swallowing.
Due to neodymium price, their price is higher than average,

Pull force analysis

Detachment force of the magnet in optimal conditions – what it depends on?

The lifting capacity listed is a result of laboratory testing executed under specific, ideal conditions:

with the use of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
with a cross-section of at least 10 mm
with an ideally smooth touching surface
with direct contact (without paint)
for force applied at a right angle (in the magnet axis)
in temp. approx. 20°C

Magnet lifting force in use – key factors

Holding efficiency impacted by specific conditions, such as (from priority):

Clearance – existence of any layer (rust, tape, air) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
Force direction – catalog parameter refers to pulling vertically. When attempting to slide, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
Chemical composition of the base – low-carbon steel attracts best. Alloy steels reduce magnetic properties and holding force.
Surface finish – full contact is obtained only on polished steel. Any scratches and bumps create air cushions, reducing force.
Thermal factor – hot environment reduces pulling force. Too high temperature can permanently damage the magnet.

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under shearing force the holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.

Precautions when working with neodymium magnets

Protect data

Powerful magnetic fields can erase data on payment cards, hard drives, and other magnetic media. Keep a distance of min. 10 cm.

Powerful field

Use magnets consciously. Their powerful strength can shock even experienced users. Plan your moves and do not underestimate their force.

Pinching danger

Protect your hands. Two large magnets will join immediately with a force of massive weight, destroying everything in their path. Be careful!

Nickel allergy

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If skin irritation occurs, cease handling magnets and use protective gear.

Fire warning

Fire warning: Rare earth powder is highly flammable. Avoid machining magnets without safety gear as this may cause fire.

Demagnetization risk

Standard neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. Damage is permanent.

Pacemakers

Medical warning: Neodymium magnets can deactivate pacemakers and defibrillators. Do not approach if you have electronic implants.

GPS Danger

GPS units and smartphones are extremely susceptible to magnetism. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.

Choking Hazard

Neodymium magnets are not suitable for play. Eating multiple magnets can lead to them pinching intestinal walls, which poses a direct threat to life and necessitates urgent medical intervention.

Magnets are brittle

NdFeB magnets are sintered ceramics, meaning they are prone to chipping. Collision of two magnets leads to them cracking into small pieces.

Warning! Learn more about risks in the article: Safety of working with magnets.

MW 8x4 / N38 - cylindrical magnet

Product card - 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) - interaction chart MW 8x4 / N38

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

Table 3: Vertical assembly (sliding) - vertical pull MW 8x4 / N38

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

Table 5: Thermal stability (stability) - power drop MW 8x4 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range MW 8x4 / N38

Table 7: Protective zones (electronics) - precautionary measures MW 8x4 / N38

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

Table 9: Corrosion resistance MW 8x4 / N38

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

Table 11: Underwater work (magnet fishing) MW 8x4 / N38

1. Vertical hold

2. Steel saturation

3. Thermal stability

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

Elemental analysis

Sustainability

Pulling force

Field Strength

Other deals

NCM 10x13.5x5 / N38 - channel magnetic holder

MPL 10x10x10 / N38 - lamellar magnet

UMP 94x40 [3xM10] GW F550 Silver Black / N52 - search holder

MW 10x2 / N38 - cylindrical magnet

Advantages and disadvantages of rare earth magnets.

Strengths

Limitations

Pull force analysis

Detachment force of the magnet in optimal conditions – what it depends on?

Magnet lifting force in use – key factors

Precautions when working with neodymium magnets

Protect data

Powerful field

Pinching danger

Nickel allergy

Fire warning

Demagnetization risk

Pacemakers

GPS Danger

Choking Hazard

Magnets are brittle

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

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

Table 3: Vertical assembly (sliding) - vertical pull
MW 8x4 / N38

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

Table 5: Thermal stability (stability) - power drop
MW 8x4 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 8x4 / N38

Table 7: Protective zones (electronics) - precautionary measures
MW 8x4 / N38

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

Table 9: Corrosion resistance
MW 8x4 / N38

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

Table 11: Underwater work (magnet fishing)
MW 8x4 / N38