Product available Ships tomorrow

MW 4x10 / 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 010075

GTIN/EAN: 5906301810742

5.00

Diameter Ø

4 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

0.94 g

Magnetization Direction

↑ axial

Load capacity

0.32 kg / 3.16 N

Magnetic Induction

606.05 mT / 6061 Gs

Coating

[NiCuNi] Nickel

product parameters »

0.800 ZŁ with VAT / pcs + price for transport

0.650 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

0.650 ZŁ

0.800 ZŁ

price from 1000 pcs

0.611 ZŁ

0.752 ZŁ

price from 3900 pcs

0.572 ZŁ

0.704 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Hunting for a discount?

Give us a call +48 22 499 98 98 or drop us a message through form our website.
Parameters as well as shape of a magnet can be reviewed with our magnetic calculator.

Orders placed before 14:00 will be shipped the same business day.

Technical parameters - MW 4x10 / N38 - cylindrical magnet

Specification / characteristics - MW 4x10 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010075
GTIN/EAN	5906301810742
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	10 mm [±0,1 mm]
Weight	0.94 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.32 kg / 3.16 N
Magnetic Induction ~ ?	606.05 mT / 6061 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 4x10 / 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 analysis of the assembly - report

Presented information are the result of a physical calculation. Values were calculated on models for the material Nd₂Fe₁₄B. Actual conditions may deviate from the simulation results. Use these calculations as a reference point during assembly planning.

Table 1: Static force (pull vs distance) - characteristics
MW 4x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	6049 Gs 604.9 mT	0.32 kg / 0.71 LBS 320.0 g / 3.1 N	safe
1 mm	3327 Gs 332.7 mT	0.10 kg / 0.21 LBS 96.8 g / 0.9 N	safe
2 mm	1732 Gs 173.2 mT	0.03 kg / 0.06 LBS 26.2 g / 0.3 N	safe
3 mm	969 Gs 96.9 mT	0.01 kg / 0.02 LBS 8.2 g / 0.1 N	safe
5 mm	389 Gs 38.9 mT	0.00 kg / 0.00 LBS 1.3 g / 0.0 N	safe
10 mm	90 Gs 9.0 mT	0.00 kg / 0.00 LBS 0.1 g / 0.0 N	safe
15 mm	35 Gs 3.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe
20 mm	17 Gs 1.7 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe
30 mm	6 Gs 0.6 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe
50 mm	2 Gs 0.2 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe

Grip strength decreases sharply with every subsequent millimeter of distance. Note that even a microscopic distance (e.g., contamination, paint, veneer) noticeably diminishes the holding power. Magnetic products operate optimally during direct contact; air break weakens the power. Notice how quickly the pull force drop, when the magnet does not adhere flatly to the metal substrate. When planning the assembly, eliminate additional spacers.

Table 2: Shear hold (wall)
MW 4x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.06 kg / 0.14 LBS 64.0 g / 0.6 N
1 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 20.0 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 approximate force sufficient to initiate the shifting of the magnet down on a vertical metal surface (considering typical friction coefficient). This value is relative to the gap size between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 4x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.10 kg / 0.21 LBS 96.0 g / 0.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.06 kg / 0.14 LBS 64.0 g / 0.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.03 kg / 0.07 LBS 32.0 g / 0.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.16 kg / 0.35 LBS 160.0 g / 1.6 N

When hanging a magnet on a upright surface (e.g., a car body), it will maintain barely about 1/5 of nominal attraction strength. Gravitational force and a low friction coefficient mean that holders slide down easier than they detach. Designing a hanger? Note that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the holder will give way down under a noticeably lighter load. Utilizing a rubberized layer can drastically raise the stability.

Table 4: Material efficiency (saturation) - power losses
MW 4x10 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.03 kg / 0.07 LBS 32.0 g / 0.3 N
1 mm	25%	0.08 kg / 0.18 LBS 80.0 g / 0.8 N
2 mm	50%	0.16 kg / 0.35 LBS 160.0 g / 1.6 N
3 mm	75%	0.24 kg / 0.53 LBS 240.0 g / 2.4 N
5 mm	100%	0.32 kg / 0.71 LBS 320.0 g / 3.1 N
10 mm	100%	0.32 kg / 0.71 LBS 320.0 g / 3.1 N
11 mm	100%	0.32 kg / 0.71 LBS 320.0 g / 3.1 N
12 mm	100%	0.32 kg / 0.71 LBS 320.0 g / 3.1 N

A thin sheet is not enough to conduct the full magnetic flux, 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 squeeze the maximum of this neodymium's power, you require a sufficiently solid piece of metal. The material oversaturation means that on delicate walls (e.g., car bodies), the holder holds weaker. We recommend selecting the steel dimension from these parameters.

Table 5: Working in heat (stability) - resistance threshold
MW 4x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.32 kg / 0.71 LBS 320.0 g / 3.1 N	OK
40 °C	-2.2%	0.31 kg / 0.69 LBS 313.0 g / 3.1 N	OK
60 °C	-4.4%	0.31 kg / 0.67 LBS 305.9 g / 3.0 N	OK
80 °C	-6.6%	0.30 kg / 0.66 LBS 298.9 g / 2.9 N
100 °C	-28.8%	0.23 kg / 0.50 LBS 227.8 g / 2.2 N

Standard neodymium magnets lose power after exceeding the maximum temperature. Avoid high temperatures – high temperature can irreversibly destroy this product. As the temperature rises, the neodymium's capacity briefly lowers. Refrain from using this magnet close to heaters higher than its safe range. Too high temperature will lead to irreversible degradation of magnetism.

*Important note: Thermal stability depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (pancake types) are more susceptible to demagnetization under lower heat stress than taller cylinders. The danger warning in the table signals permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field range
MW 4x10 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.83 kg / 6.25 LBS 6 138 Gs	0.43 kg / 0.94 LBS 425 g / 4.2 N	N/A
1 mm	1.63 kg / 3.59 LBS 9 174 Gs	0.24 kg / 0.54 LBS 244 g / 2.4 N	1.47 kg / 3.23 LBS ~0 Gs
2 mm	0.86 kg / 1.89 LBS 6 655 Gs	0.13 kg / 0.28 LBS 129 g / 1.3 N	0.77 kg / 1.70 LBS ~0 Gs
3 mm	0.44 kg / 0.97 LBS 4 777 Gs	0.07 kg / 0.15 LBS 66 g / 0.7 N	0.40 kg / 0.88 LBS ~0 Gs
5 mm	0.13 kg / 0.28 LBS 2 561 Gs	0.02 kg / 0.04 LBS 19 g / 0.2 N	0.11 kg / 0.25 LBS ~0 Gs
10 mm	0.01 kg / 0.03 LBS 778 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 179 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 19 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 12 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 8 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 6 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 4 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 magnets attract each other from a much further distance than a magnet and steel combination. Such a system of two magnets generates a stronger field and a wider radius of operation. Planning to create a strong closure? Utilize two neodymiums instead of a neodymium and a striker plate. Remember that when attracting two neodymiums, the impact force is extreme. The levitation is marginally weaker than the attraction, but still significant.
*The magnetic induction between like poles reaches ~0 Gs at the midpoint between the magnets (due to field cancellation).
* Estimates show shear force of dual matching magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - precautionary measures
MW 4x10 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	3.5 cm
Hearing aid	10 Gs (1.0 mT)	2.5 cm
Mechanical watch	20 Gs (2.0 mT)	2.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	1.5 cm
Remote	50 Gs (5.0 mT)	1.5 cm
Payment card	400 Gs (40.0 mT)	0.5 cm
HDD hard drive	600 Gs (60.0 mT)	0.5 cm

Extremely neodym field poses a serious hazard to electronics and pacemakers. These magnets generate a field that disrupts operation of sensitive medical devices. Be aware: the invisible magnetic field acts through matter and housings. Special caution must be exercised by people with hearing aids and insulin pumps. The risk also applies to: automatic timepieces, remotes, speakers, and screens. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MW 4x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	18.61 km/h (5.17 m/s)	0.01 J
30 mm	32.23 km/h (8.95 m/s)	0.04 J
50 mm	41.61 km/h (11.56 m/s)	0.06 J
100 mm	58.84 km/h (16.35 m/s)	0.13 J

Magnetic elements are very brittle – a strong collision with metal causes immediate chipping. Watch the impact speed – a neodymium left loose speeds with massive force. Impact energy can cause material chips or painful pinches to skin. Hold the magnet firmly during installation so it doesn't hit violently against the metal. A collision at high speed means shattering of the magnet. Wear safety glasses when working with large magnets.

Table 9: Corrosion resistance
MW 4x10 / 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)

The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MW 4x10 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	864 Mx	8.6 µWb
P_c Coefficient	1.31	High (Stable)

Flux value emitted by the pole surface. Essential parameter for generator designers as well as sensors. The P_c coefficient determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 4x10 / N38

Environment	Effective steel pull	Effect
Air (land)	0.32 kg	Standard
Water (riverbed)	0.37 kg (+0.05 kg buoyancy gain)	+14.5%

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

Water displaces steel, making heavy objects slightly lighter. 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 just approx. 20-30% of its nominal pull.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) drastically weakens the holding force.

3. Thermal stability

*For standard magnets, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.31

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%

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: 010075-2026

Measurement Calculator

Magnet pull force

Kilograms (kg)

Force (N)

lbs

Magnetic Field

Induction (Gs)

Induction (T)

Type data into any field, to see the remaining fields convert automatically.

View more offers

Product available Ships tomorrow

MP 20x5x27 / N38 - ring magnet

33.00 ZŁ brutto / pcs

Product available Ships tomorrow

MW 12x8 / N38 - cylindrical magnet

2.47 ZŁ brutto / pcs

Product available Ships tomorrow

MPL 25x25x10 / N38 - lamellar magnet

20.29 ZŁ brutto / pcs

Product available Ships tomorrow

MP 60x20x5 / N38 - ring magnet

47.99 ZŁ brutto / pcs

The offered product is an exceptionally strong cylindrical magnet, manufactured from advanced NdFeB material, which, at dimensions of Ø4x10 mm, guarantees the highest energy density. The MW 4x10 / N38 model features high dimensional repeatability and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 0.32 kg), this product is in stock from our warehouse in Poland, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

This model is created for building electric motors, advanced Hall effect sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 3.16 N with a weight of only 0.94 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.

Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure stability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Magnets N38 are strong enough for 90% of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø4x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 4 mm and height 10 mm. The key parameter here is the lifting capacity amounting to approximately 0.32 kg (force ~3.16 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 10 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 diametrically if your project requires it.

Strengths as well as weaknesses of rare earth magnets.

Benefits

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

They retain attractive force for nearly ten years – the loss is just ~1% (in theory),
They do not lose their magnetic properties even under external field action,
Thanks to the glossy finish, the surface of nickel, gold, or silver gives an elegant appearance,
The surface of neodymium magnets generates a unique magnetic field – this is a distinguishing feature,
Neodymium magnets are characterized by very 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 freedom in forming and the capacity to adapt to specific needs,
Significant place in advanced technology sectors – they are utilized in computer drives, brushless drives, precision medical tools, also industrial machines.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Disadvantages of neodymium magnets:

At 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 strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
We recommend casing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complex shapes.
Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child safety. Additionally, small components of these magnets are able to be problematic in diagnostics medical in case of swallowing.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

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

Magnet power was defined for the most favorable conditions, taking into account:

using a sheet made of mild steel, acting as a magnetic yoke
whose transverse dimension reaches at least 10 mm
with an polished contact surface
under conditions of no distance (metal-to-metal)
for force acting at a right angle (pull-off, not shear)
at conditions approx. 20°C

Practical lifting capacity: influencing factors

In practice, the actual holding force is determined by many variables, presented from the most important:

Air gap (betwixt the magnet and the plate), because even a microscopic clearance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to paint, corrosion or debris).
Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits much less (often approx. 20-30% of nominal force).
Plate thickness – insufficiently thick plate does not accept the full field, causing part of the flux to be escaped into the air.
Plate material – mild steel gives the best results. Alloy steels reduce magnetic properties and holding force.
Surface quality – the more even the plate, the better the adhesion and stronger the hold. Unevenness creates an air distance.
Thermal environment – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.

Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.

Warnings

Allergic reactions

Medical facts indicate that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, prevent direct skin contact and choose encased magnets.

Medical interference

Warning for patients: Strong magnetic fields affect electronics. Keep at least 30 cm distance or ask another person to handle the magnets.

Swallowing risk

Neodymium magnets are not suitable for play. Accidental ingestion of a few magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and requires urgent medical intervention.

Immense force

Be careful. Rare earth magnets act from a long distance and snap with massive power, often faster than you can move away.

Magnet fragility

Protect your eyes. Magnets can fracture upon violent connection, launching sharp fragments into the air. We recommend safety glasses.

Flammability

Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets without safety gear as this may cause fire.

Crushing force

Big blocks can smash fingers instantly. Do not place your hand between two strong magnets.

Precision electronics

GPS units and mobile phones are highly susceptible to magnetism. Close proximity with a strong magnet can ruin the sensors in your phone.

Safe distance

Avoid bringing magnets near a wallet, laptop, or TV. The magnetic field can irreversibly ruin these devices and wipe information from cards.

Heat warning

Control the heat. Heating the magnet above 80 degrees Celsius will destroy its properties and pulling force.

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

MW 4x10 / N38 - cylindrical magnet

Technical parameters - MW 4x10 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the assembly - report

Table 1: Static force (pull vs distance) - characteristics MW 4x10 / N38

Table 2: Shear hold (wall) MW 4x10 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MW 4x10 / N38

Table 4: Material efficiency (saturation) - power losses MW 4x10 / N38

Table 5: Working in heat (stability) - resistance threshold MW 4x10 / N38

Table 6: Two magnets (attraction) - field range MW 4x10 / N38

Table 7: Safety (HSE) (implants) - precautionary measures MW 4x10 / N38

Table 8: Impact energy (kinetic energy) - warning MW 4x10 / N38

Table 9: Corrosion resistance MW 4x10 / N38

Table 10: Construction data (Flux) MW 4x10 / N38

Table 11: Underwater work (magnet fishing) MW 4x10 / N38

1. Sliding resistance

2. Efficiency vs thickness

3. Thermal stability

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

Material specification

Sustainability

Magnet pull force

Magnetic Field

View more offers

MP 20x5x27 / N38 - ring magnet

MW 12x8 / N38 - cylindrical magnet

MPL 25x25x10 / N38 - lamellar magnet

MP 60x20x5 / N38 - ring magnet

Strengths as well as weaknesses of rare earth magnets.

Benefits

Disadvantages

Holding force characteristics

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

Practical lifting capacity: influencing factors

Warnings

Allergic reactions

Medical interference

Swallowing risk

Immense force

Magnet fragility

Flammability

Crushing force

Precision electronics

Safe distance

Heat warning

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - characteristics
MW 4x10 / N38

Table 2: Shear hold (wall)
MW 4x10 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 4x10 / N38

Table 4: Material efficiency (saturation) - power losses
MW 4x10 / N38

Table 5: Working in heat (stability) - resistance threshold
MW 4x10 / N38

Table 6: Two magnets (attraction) - field range
MW 4x10 / N38

Table 7: Safety (HSE) (implants) - precautionary measures
MW 4x10 / N38

Table 8: Impact energy (kinetic energy) - warning
MW 4x10 / N38

Table 9: Corrosion resistance
MW 4x10 / N38

Table 10: Construction data (Flux)
MW 4x10 / N38

Table 11: Underwater work (magnet fishing)
MW 4x10 / N38