Product available Ships tomorrow

MW 7x2 / 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 010099

GTIN/EAN: 5906301810988

5.00

Diameter Ø

7 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

0.58 g

Magnetization Direction

↑ axial

Load capacity

0.99 kg / 9.76 N

Magnetic Induction

307.23 mT / 3072 Gs

Coating

[NiCuNi] Nickel

view properties »

0.381 ZŁ with VAT / pcs + price for transport

0.310 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

0.310 ZŁ

0.381 ZŁ

price from 2100 pcs

0.279 ZŁ

0.343 ZŁ

price from 3000 pcs

0.273 ZŁ

0.336 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Need help making a decision?

Call us +48 888 99 98 98 or send us a note using inquiry form the contact form page.
Strength and shape of magnetic components can be tested using our magnetic calculator.

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

Technical details - MW 7x2 / N38 - cylindrical magnet

Specification / characteristics - MW 7x2 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010099
GTIN/EAN	5906301810988
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	7 mm [±0,1 mm]
Height	2 mm [±0,1 mm]
Weight	0.58 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.99 kg / 9.76 N
Magnetic Induction ~ ?	307.23 mT / 3072 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 7x2 / 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 simulation of the magnet - data

The following information are the result of a mathematical simulation. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Operational performance might slightly differ. Treat these data as a reference point for designers.

Table 1: Static force (force vs distance) - power drop
MW 7x2 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3070 Gs 307.0 mT	0.99 kg / 2.18 pounds 990.0 g / 9.7 N	safe
1 mm	2332 Gs 233.2 mT	0.57 kg / 1.26 pounds 571.1 g / 5.6 N	safe
2 mm	1590 Gs 159.0 mT	0.27 kg / 0.59 pounds 265.5 g / 2.6 N	safe
3 mm	1044 Gs 104.4 mT	0.11 kg / 0.25 pounds 114.6 g / 1.1 N	safe
5 mm	466 Gs 46.6 mT	0.02 kg / 0.05 pounds 22.8 g / 0.2 N	safe
10 mm	100 Gs 10.0 mT	0.00 kg / 0.00 pounds 1.1 g / 0.0 N	safe
15 mm	35 Gs 3.5 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	safe
20 mm	16 Gs 1.6 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	safe
30 mm	5 Gs 0.5 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	safe
50 mm	1 Gs 0.1 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	safe

Magnetic force weakens drastically with every subsequent millimeter of distance. Note that even a very thin break (e.g., dirt, paint, rust) significantly reduces the pull force. Magnets operate most effectively during direct contact; distance kills the power. Notice how flashily the load capacity plummet, when the product does not adhere tightly to the metal substrate. When designing the arrangement, avoid redundant distances.

Table 2: Slippage load (wall)
MW 7x2 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.20 kg / 0.44 pounds 198.0 g / 1.9 N
1 mm	Stal (~0.2)	0.11 kg / 0.25 pounds 114.0 g / 1.1 N
2 mm	Stal (~0.2)	0.05 kg / 0.12 pounds 54.0 g / 0.5 N
3 mm	Stal (~0.2)	0.02 kg / 0.05 pounds 22.0 g / 0.2 N
5 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 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

This section calculates the estimated force sufficient to cause the slippage of the magnet vertically along a vertical steel plate (assuming standard friction). This parameter depends on the air gap between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 7x2 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.30 kg / 0.65 pounds 297.0 g / 2.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.20 kg / 0.44 pounds 198.0 g / 1.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.10 kg / 0.22 pounds 99.0 g / 1.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.50 kg / 1.09 pounds 495.0 g / 4.9 N

When placing a holder on a upright plane (e.g., a car body), it you can count on barely approx. 20%-30% of its maximum pull force. Gravitational force as well as a low friction coefficient influence the fact that holders slide down easier than they detach. Planning a wall mount? Remember that the sliding force is much weaker than the maximum static pull force. On a smooth steel, the magnet will give way down under a significantly smaller cargo. Application of an anti-slip coating can drastically raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 7x2 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.10 kg / 0.22 pounds 99.0 g / 1.0 N
1 mm	25%	0.25 kg / 0.55 pounds 247.5 g / 2.4 N
2 mm	50%	0.50 kg / 1.09 pounds 495.0 g / 4.9 N
3 mm	75%	0.74 kg / 1.64 pounds 742.5 g / 7.3 N
5 mm	100%	0.99 kg / 2.18 pounds 990.0 g / 9.7 N
10 mm	100%	0.99 kg / 2.18 pounds 990.0 g / 9.7 N
11 mm	100%	0.99 kg / 2.18 pounds 990.0 g / 9.7 N
12 mm	100%	0.99 kg / 2.18 pounds 990.0 g / 9.7 N

A too thin steel cannot take in the entire magnetic field, which wastes potential of the holder. Should you attach a powerful product to a too thin substrate, the flux will pass right through and the attraction force will be weaker. To squeeze full efficiency of this neodymium's power, you require a sufficiently solid backing of metal. The saturation effect causes that on sheet metal structures (e.g., car bodies), the product shows lower pull force. We suggest choosing the steel thickness according to the table below.

Table 5: Thermal resistance (material behavior) - power drop
MW 7x2 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.99 kg / 2.18 pounds 990.0 g / 9.7 N	OK
40 °C	-2.2%	0.97 kg / 2.13 pounds 968.2 g / 9.5 N	OK
60 °C	-4.4%	0.95 kg / 2.09 pounds 946.4 g / 9.3 N
80 °C	-6.6%	0.92 kg / 2.04 pounds 924.7 g / 9.1 N
100 °C	-28.8%	0.70 kg / 1.55 pounds 704.9 g / 6.9 N

Ordinary NdFeB products lose strength past the thermal threshold. Avoid high temperatures – heat can irreversibly damage this product. As the temperature rises, the magnet's power briefly lowers. Avoid using this magnet near heat sources exceeding its working range. Too high temperature will result in irreversible degradation of magnetic properties.

*Engineering note: Thermal stability depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (low permeance coefficient) risk losing magnetic properties under lower heat stress compared to rod magnets. The danger warning in the table points to permanent field degradation for this particular item.

Table 6: Two magnets (attraction) - field collision
MW 7x2 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.24 kg / 4.93 pounds 4 653 Gs	0.34 kg / 0.74 pounds 335 g / 3.3 N	N/A
1 mm	1.76 kg / 3.89 pounds 5 454 Gs	0.26 kg / 0.58 pounds 265 g / 2.6 N	1.59 kg / 3.50 pounds ~0 Gs
2 mm	1.29 kg / 2.84 pounds 4 663 Gs	0.19 kg / 0.43 pounds 193 g / 1.9 N	1.16 kg / 2.56 pounds ~0 Gs
3 mm	0.89 kg / 1.97 pounds 3 884 Gs	0.13 kg / 0.30 pounds 134 g / 1.3 N	0.81 kg / 1.77 pounds ~0 Gs
5 mm	0.40 kg / 0.87 pounds 2 581 Gs	0.06 kg / 0.13 pounds 59 g / 0.6 N	0.36 kg / 0.78 pounds ~0 Gs
10 mm	0.05 kg / 0.11 pounds 932 Gs	0.01 kg / 0.02 pounds 8 g / 0.1 N	0.05 kg / 0.10 pounds ~0 Gs
20 mm	0.00 kg / 0.01 pounds 200 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 17 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 10 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 6 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 4 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 3 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 2 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnets attract each other from a wider radius than a magnet and sheet setup. The setup 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. Remember that when bringing together two magnets, the pinch force is huge. The levitation is marginally weaker than the attraction, but still significant.
*Field value between like poles reaches ~0 Gs in the exact middle between the magnets (due to field cancellation).
Important: Calculations refer to shear force of dual same neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - precautionary measures
MW 7x2 / 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)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	0.5 cm

A strong magnetic field is a real danger to electronics as well as medical implants. These neodymiums generate a field that disrupts operation of digital equipment. Notice: the unseen radiation penetrates the body and glass. Special caution must be taken by people with hearing aids and drug dispensers. Influence will be felt by: automatic timepieces, car keys, speakers, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MW 7x2 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	41.69 km/h (11.58 m/s)	0.04 J
30 mm	72.17 km/h (20.05 m/s)	0.12 J
50 mm	93.17 km/h (25.88 m/s)	0.19 J
100 mm	131.76 km/h (36.60 m/s)	0.39 J

NdFeB products are delicate – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely turns into a projectile. Impact energy can destroy the magnet or painful pinches to fingers. Hold the magnet firmly during installation so it doesn't slam with momentum 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 7x2 / 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. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
MW 7x2 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	1 284 Mx	12.8 µWb
P_c Coefficient	0.39	Low (Flat)

Flux value emitted by the magnet pole. Essential parameter in coil applications and motors. The P_c coefficient determines the working geometry.

Table 11: Physics of underwater searching
MW 7x2 / N38

Environment	Effective steel pull	Effect
Air (land)	0.99 kg	Standard
Water (riverbed)	1.13 kg (+0.14 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.

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

*Note: On a vertical wall, the magnet retains merely approx. 20-30% of its perpendicular strength.

2. Steel saturation

*Thin steel (e.g. computer case) drastically reduces 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) = 0.39

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

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: 010099-2026

Quick Unit Converter

Force (pull)

Kilograms (kg)

Pounds (lbs)

Magnetic Field

Tesla (T)

Input your value in a single slot to see the conversion in the other units immediately.

Check out also offers

Product available Ships tomorrow

MW 8x5 / N38 - cylindrical magnet

0.836 ZŁ brutto / pcs

Product available Ships tomorrow

UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread

189.91 ZŁ brutto / pcs

Product available Ships tomorrow

UMT 12x20 orange / N38 - board holder

1.894 ZŁ brutto / pcs

Product available Ships tomorrow

MPL 200x30x30 / N38 - lamellar magnet

563.28 ZŁ brutto / pcs

The offered product is a very strong cylinder magnet, made from advanced NdFeB material, which, with dimensions of Ø7x2 mm, guarantees maximum efficiency. The MW 7x2 / N38 model boasts an accuracy of ±0.1mm and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a magnetic rod with impressive force (approx. 0.99 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is ideal for building electric motors, advanced Hall effect sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the high power of 9.76 N with a weight of only 0.58 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.

Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Magnets NdFeB grade 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 (Ø7x2), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.

This model is characterized by dimensions Ø7x2 mm, which, at a weight of 0.58 g, makes it an element with high magnetic energy density. The key parameter here is the holding force amounting to approximately 0.99 kg (force ~9.76 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 2 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.

Pros as well as cons of rare earth magnets.

Benefits

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

They retain full power for almost ten years – the drop is just ~1% (in theory),
They do not lose their magnetic properties even under external field action,
By using a shiny coating of silver, the element gains an proper look,
Neodymium magnets ensure maximum magnetic induction on a small area, which allows for strong attraction,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
Considering the possibility of flexible forming and customization to specialized needs, NdFeB magnets can be produced in a broad palette of forms and dimensions, which amplifies use scope,
Universal use in high-tech industry – they are used in hard drives, electric drive systems, advanced medical instruments, also complex engineering applications.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Characteristics of disadvantages of neodymium magnets and ways of using them

They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
Limited ability of producing nuts in the magnet and complicated forms - recommended is cover - magnet mounting.
Potential hazard related to microscopic parts of magnets can be dangerous, if swallowed, which becomes key in the context of child health protection. Additionally, small elements of these products can complicate diagnosis medical in case of swallowing.
With mass production the cost of neodymium magnets can be a barrier,

Pull force analysis

Maximum holding power of the magnet – what it depends on?

Magnet power was defined for the most favorable conditions, including:

using a base made of low-carbon steel, serving as a magnetic yoke
possessing a thickness of min. 10 mm to avoid saturation
characterized by even structure
under conditions of ideal adhesion (metal-to-metal)
for force applied at a right angle (pull-off, not shear)
in temp. approx. 20°C

Key elements affecting lifting force

During everyday use, the actual holding force depends on many variables, listed from the most important:

Distance – existence of foreign body (paint, tape, gap) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
Steel thickness – too thin sheet does not accept the full field, causing part of the power to be lost to the other side.
Steel grade – ideal substrate is high-permeability steel. Hardened steels may have worse magnetic properties.
Base smoothness – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under perpendicular forces, however under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a small distance between the magnet’s surface and the plate lowers the load capacity.

H&S for magnets

Impact on smartphones

Remember: neodymium magnets produce a field that interferes with precision electronics. Maintain a separation from your mobile, tablet, and GPS.

Danger to the youngest

Product intended for adults. Tiny parts pose a choking risk, leading to serious injuries. Store away from children and animals.

Fire risk

Fire warning: Rare earth powder is highly flammable. Do not process magnets in home conditions as this risks ignition.

Shattering risk

Protect your eyes. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Wear goggles.

Crushing force

Large magnets can break fingers in a fraction of a second. Never put your hand betwixt two attracting surfaces.

Sensitization to coating

Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If an allergic reaction occurs, immediately stop working with magnets and wear gloves.

Danger to pacemakers

Warning for patients: Strong magnetic fields disrupt medical devices. Maintain at least 30 cm distance or ask another person to work with the magnets.

Respect the power

Use magnets consciously. Their powerful strength can shock even professionals. Be vigilant and do not underestimate their power.

Power loss in heat

Watch the temperature. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and pulling force.

Threat to electronics

Data protection: Neodymium magnets can ruin data carriers and sensitive devices (heart implants, hearing aids, mechanical watches).

Danger! More info about risks in the article: Safety of working with magnets.

MW 7x2 / N38 - cylindrical magnet

Technical details - MW 7x2 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the magnet - data

Table 1: Static force (force vs distance) - power drop MW 7x2 / N38

Table 2: Slippage load (wall) MW 7x2 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MW 7x2 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MW 7x2 / N38

Table 5: Thermal resistance (material behavior) - power drop MW 7x2 / N38

Table 6: Two magnets (attraction) - field collision MW 7x2 / N38

Table 7: Protective zones (electronics) - precautionary measures MW 7x2 / N38

Table 8: Collisions (kinetic energy) - warning MW 7x2 / N38

Table 9: Anti-corrosion coating durability MW 7x2 / N38

Table 10: Electrical data (Pc) MW 7x2 / N38

Table 11: Physics of underwater searching MW 7x2 / N38

1. Vertical hold

2. Steel saturation

3. Thermal stability

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

Elemental analysis

Sustainability

Force (pull)

Magnetic Field

Check out also offers

MW 8x5 / N38 - cylindrical magnet

UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread

UMT 12x20 orange / N38 - board holder

MPL 200x30x30 / N38 - lamellar magnet

Pros as well as cons of rare earth magnets.

Benefits

Disadvantages

Pull force analysis

Maximum holding power of the magnet – what it depends on?

Key elements affecting lifting force

H&S for magnets

Impact on smartphones

Danger to the youngest

Fire risk

Shattering risk

Crushing force

Sensitization to coating

Danger to pacemakers

Respect the power

Power loss in heat

Threat to electronics

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - power drop
MW 7x2 / N38

Table 2: Slippage load (wall)
MW 7x2 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 7x2 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MW 7x2 / N38

Table 5: Thermal resistance (material behavior) - power drop
MW 7x2 / N38

Table 6: Two magnets (attraction) - field collision
MW 7x2 / N38

Table 7: Protective zones (electronics) - precautionary measures
MW 7x2 / N38

Table 8: Collisions (kinetic energy) - warning
MW 7x2 / N38

Table 9: Anti-corrosion coating durability
MW 7x2 / N38

Table 10: Electrical data (P_c)
MW 7x2 / N38

Table 11: Physics of underwater searching
MW 7x2 / N38