Product available Ships in 3 days

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

see technical specifications »

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?

Call us now +48 888 99 98 98 or get in touch using inquiry form our website.
Force along with form of neodymium magnets can be calculated using our our magnetic calculator.

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

Technical parameters of the product - 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

Physical modeling of the magnet - data

The following information represent the outcome of a physical simulation. Values were calculated on algorithms for the material Nd₂Fe₁₄B. Real-world parameters might slightly differ. Please consider these calculations as a reference point during assembly planning.

Table 1: Static force (pull vs distance) - interaction chart
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 pounds 320.0 g / 3.1 N	low risk
1 mm	3327 Gs 332.7 mT	0.10 kg / 0.21 pounds 96.8 g / 0.9 N	low risk
2 mm	1732 Gs 173.2 mT	0.03 kg / 0.06 pounds 26.2 g / 0.3 N	low risk
3 mm	969 Gs 96.9 mT	0.01 kg / 0.02 pounds 8.2 g / 0.1 N	low risk
5 mm	389 Gs 38.9 mT	0.00 kg / 0.00 pounds 1.3 g / 0.0 N	low risk
10 mm	90 Gs 9.0 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	low risk
15 mm	35 Gs 3.5 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk
20 mm	17 Gs 1.7 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk
30 mm	6 Gs 0.6 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk
50 mm	2 Gs 0.2 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk

Magnetic force drops drastically with every mm of gap. Note that even a very thin break (e.g., contamination, paint, rust) strongly diminishes the holding power. Magnets work most effectively in perfect adhesion; gap drastically cuts the power. Notice how rapidly the load capacity fall, when the product does not touch tightly to the metal substrate. When calculating the arrangement, avoid redundant distances.

Table 2: Shear capacity (vertical surface)
MW 4x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.06 kg / 0.14 pounds 64.0 g / 0.6 N
1 mm	Stal (~0.2)	0.02 kg / 0.04 pounds 20.0 g / 0.2 N
2 mm	Stal (~0.2)	0.01 kg / 0.01 pounds 6.0 g / 0.1 N
3 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

The table below shows the estimated weight limit sufficient to start the slippage of the magnet vertically against a vertical metal surface (assuming typical friction). This parameter is relative to the air gap between the magnet and the metal.

Table 3: Wall mounting (sliding) - vertical pull
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 pounds 96.0 g / 0.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.06 kg / 0.14 pounds 64.0 g / 0.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.03 kg / 0.07 pounds 32.0 g / 0.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.16 kg / 0.35 pounds 160.0 g / 1.6 N

When hanging a holder on a vertical plane (e.g., a car body), it you can count on barely approx. 1/5 of its maximum pull force. Gravity as well as a weak degree of grip cause that products move down easier than they detach. Designing a wall mount? Note that the shear force is significantly lower than the perpendicular breakaway force. On a painted metal, the holder will give way down under a noticeably lighter load. Using a rubber layer can effectively improve the result.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 4x10 / N38

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

A thin metal plate is not enough to absorb the entire magnetic field, which squanders power of the magnet. If you attach a powerful product to a thin surface, the flux will penetrate right through and the attraction force will be weaker. To achieve the maximum of this magnet's power, you need a suitably thick element of metal. The material oversaturation means that on sheet metal structures (e.g., car bodies), the holder shows lower pull force. We suggest choosing the steel dimension based on the following data.

Table 5: Thermal stability (material behavior) - power drop
MW 4x10 / N38

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

Ordinary NdFeB products lose power above the temperature limit. Watch out for overheating – heat can permanently destroy this product. As the temperature rises, the magnet's power briefly drops. Avoid using this magnet close to ovens higher than its safe range. Ignoring the limit will result in destruction of magnetic properties.

*Technical advisory: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low Pc) may lose charge permanently sooner compared to rod magnets. The danger warning in the table indicates permanent field degradation for this particular item.

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

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.83 kg / 6.25 pounds 6 138 Gs	0.43 kg / 0.94 pounds 425 g / 4.2 N	N/A
1 mm	1.63 kg / 3.59 pounds 9 174 Gs	0.24 kg / 0.54 pounds 244 g / 2.4 N	1.47 kg / 3.23 pounds ~0 Gs
2 mm	0.86 kg / 1.89 pounds 6 655 Gs	0.13 kg / 0.28 pounds 129 g / 1.3 N	0.77 kg / 1.70 pounds ~0 Gs
3 mm	0.44 kg / 0.97 pounds 4 777 Gs	0.07 kg / 0.15 pounds 66 g / 0.7 N	0.40 kg / 0.88 pounds ~0 Gs
5 mm	0.13 kg / 0.28 pounds 2 561 Gs	0.02 kg / 0.04 pounds 19 g / 0.2 N	0.11 kg / 0.25 pounds ~0 Gs
10 mm	0.01 kg / 0.03 pounds 778 Gs	0.00 kg / 0.00 pounds 2 g / 0.0 N	0.01 kg / 0.02 pounds ~0 Gs
20 mm	0.00 kg / 0.00 pounds 179 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 19 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.00 pounds 12 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
70 mm	0.00 kg / 0.00 pounds 8 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.00 pounds 6 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.00 pounds 4 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 3 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnetic products attract each other from a wider radius than a magnet and sheet combination. The connection of two magnets generates a stronger field and a larger range of action. Planning to create a powerful holder? Apply two magnets instead of one magnet and a steel. Be careful that when attracting two neodymiums, the pinch force is huge. The levitation is a bit weaker than the connection force, but still large.
*Field value between like poles is approximately ~0 Gs at the geometric center between the magnets (due to field cancellation).
Important: Estimates show friction force of dual matching magnets (friction coefficient ~0.15 for Ni-Ni plating).

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
Timepiece	20 Gs (2.0 mT)	2.0 cm
Mobile device	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

Powerful magnet radiation poses a serious hazard to IT equipment and medical implants. These NdFeB products generate a field that disrupts operation of digital equipment. Notice: the unseen radiation acts through matter and glass. Increased vigilance must be taken by people with cochlear implants and insulin pumps. The risk also applies to: mechanical watches, remotes, speakers, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Collisions (cracking risk) - collision effects
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

NdFeB products are delicate – a collision with steel causes immediate chipping. Pay attention to connection velocity – a magnet released freely turns into a projectile. Striking energy can destroy the magnet or painful pinches to fingers. Hold the magnet firmly during mounting so it doesn't hit violently against the steel surface. A collision at high speed means shattering of the magnet. Use safety goggles when handling with large magnets.

Table 9: Anti-corrosion coating durability
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 following table defines the conditions under which this product can be safely used. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (P_c)
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 and motors. P_c value determines the working geometry.

Table 11: Physics of underwater searching
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%

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

The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Wall mount (shear)

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

2. Steel saturation

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

3. Power loss vs temp

*For N38 grade, the max working temp is 80°C.

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

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

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 specification and ecology

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

Force (pull)

Force (N)

Pounds (lbs)

Magnetic Induction

Gauss (Gs)

Induction (T)

Insert data in a box, to see the rest convert instantly.

Other offers

Product available Ships in 3 days

UMC 16x5/2x5 / N38 - cylindrical magnetic holder

3.33 ZŁ brutto / pcs

Product available Ships in 3 days

SM 18x275 [2xM5] / N42 - magnetic separator

608.85 ZŁ brutto / pcs

Product available Ships in 3 days

SM 18x150 [2xM5] / N42 - magnetic separator

332.10 ZŁ brutto / pcs

Product available Ships in 3 days

UMS 48x18x8.5x11.5 / N38 - conical magnetic holder

44.92 ZŁ brutto / pcs

The presented product is an extremely powerful cylinder magnet, composed of modern NdFeB material, which, with dimensions of Ø4x10 mm, guarantees maximum efficiency. This specific item is characterized by high dimensional repeatability and professional build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 0.32 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 3.16 N with a weight of only 0.94 g, this rod is indispensable in electronics and wherever low weight is crucial.

Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure long-term durability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering a great economic balance and high resistance to demagnetization. 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 warehouse.

This model is characterized by dimensions Ø4x10 mm, which, at a weight of 0.94 g, makes it an element with high magnetic energy density. 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 external factors, giving it an aesthetic, silvery shine.

Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 4 mm. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized through the diameter if your project requires it.

Strengths and weaknesses of rare earth magnets.

Advantages

Apart from their strong magnetism, neodymium magnets have these key benefits:

They retain full power for nearly ten years – the drop is just ~1% (according to analyses),
They retain their magnetic properties even under strong external field,
By using a shiny coating of gold, the element gains an elegant look,
Neodymium magnets create maximum magnetic induction on a small surface, which ensures high operational effectiveness,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
In view of the option of flexible molding and adaptation to unique solutions, NdFeB magnets can be produced in a variety of geometric configurations, which amplifies use scope,
Huge importance in modern industrial fields – they find application in magnetic memories, electromotive mechanisms, diagnostic systems, as well as other advanced devices.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Disadvantages of NdFeB magnets:

At strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
Limited possibility of producing nuts in the magnet and complex shapes - preferred is a housing - magnetic holder.
Health risk resulting from small fragments of magnets can be dangerous, in case of ingestion, which becomes key in the context of child health protection. It is also worth noting that small elements of these devices are able to complicate diagnosis medical when they are in the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum lifting capacity of the magnet – what it depends on?

Information about lifting capacity was determined for ideal contact conditions, taking into account:

on a block made of structural steel, perfectly concentrating the magnetic flux
possessing a massiveness of minimum 10 mm to avoid saturation
with a plane cleaned and smooth
without any insulating layer between the magnet and steel
under perpendicular force vector (90-degree angle)
at temperature approx. 20 degrees Celsius

Determinants of practical lifting force of a magnet

Bear in mind that the application force will differ influenced by elements below, in order of importance:

Space between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
Angle of force application – highest force is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is typically many times lower (approx. 1/5 of the lifting capacity).
Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
Plate material – mild steel gives the best results. Alloy admixtures reduce magnetic permeability and lifting capacity.
Surface structure – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
Temperature – heating the magnet causes a temporary drop of force. Check the maximum operating temperature for a given model.

Lifting capacity was measured by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the lifting capacity is smaller. Moreover, even a small distance between the magnet’s surface and the plate reduces the load capacity.

Precautions when working with neodymium magnets

Risk of cracking

Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Product not for children

Always keep magnets away from children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are very dangerous.

Operating temperature

Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. Damage is permanent.

Data carriers

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

Threat to navigation

An intense magnetic field negatively affects the operation of magnetometers in phones and GPS navigation. Do not bring magnets close to a device to prevent breaking the sensors.

Machining danger

Machining of NdFeB material carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Bone fractures

Mind your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!

Powerful field

Be careful. Neodymium magnets act from a distance and snap with huge force, often quicker than you can react.

Allergic reactions

Medical facts indicate that the nickel plating (standard magnet coating) is a strong allergen. If your skin reacts to metals, avoid touching magnets with bare hands and select versions in plastic housing.

Life threat

Patients with a heart stimulator have to keep an large gap from magnets. The magnetism can interfere with the functioning of the implant.

Caution! Looking for details? Read our article: Why are neodymium magnets dangerous?

MW 4x10 / N38 - cylindrical magnet

Technical parameters of the product - MW 4x10 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the magnet - data

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

Table 2: Shear capacity (vertical surface) MW 4x10 / N38

Table 3: Wall mounting (sliding) - vertical pull MW 4x10 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MW 4x10 / N38

Table 5: Thermal stability (material behavior) - power drop MW 4x10 / N38

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

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

Table 8: Collisions (cracking risk) - collision effects MW 4x10 / N38

Table 9: Anti-corrosion coating durability MW 4x10 / N38

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

Table 11: Physics of underwater searching MW 4x10 / N38

1. Wall mount (shear)

2. Steel saturation

3. Power loss vs temp

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

Material specification

Sustainability

Force (pull)

Magnetic Induction

Other offers

UMC 16x5/2x5 / N38 - cylindrical magnetic holder

SM 18x275 [2xM5] / N42 - magnetic separator

SM 18x150 [2xM5] / N42 - magnetic separator

UMS 48x18x8.5x11.5 / N38 - conical magnetic holder

Strengths and weaknesses of rare earth magnets.

Advantages

Disadvantages

Lifting parameters

Maximum lifting capacity of the magnet – what it depends on?

Determinants of practical lifting force of a magnet

Precautions when working with neodymium magnets

Risk of cracking

Product not for children

Operating temperature

Data carriers

Threat to navigation

Machining danger

Bone fractures

Powerful field

Allergic reactions

Life threat

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Shear capacity (vertical surface)
MW 4x10 / N38

Table 3: Wall mounting (sliding) - vertical pull
MW 4x10 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 4x10 / N38

Table 5: Thermal stability (material behavior) - power drop
MW 4x10 / N38

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

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

Table 8: Collisions (cracking risk) - collision effects
MW 4x10 / N38

Table 9: Anti-corrosion coating durability
MW 4x10 / N38

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

Table 11: Physics of underwater searching
MW 4x10 / N38