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MW 12x4 / 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 010019

GTIN/EAN: 5906301810186

5.00

Diameter Ø

12 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

3.39 g

Magnetization Direction

↑ axial

Load capacity

3.45 kg / 33.81 N

Magnetic Induction

343.64 mT / 3436 Gs

Coating

[NiCuNi] Nickel

view parameters »

1.353 ZŁ with VAT / pcs + price for transport

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Product card - MW 12x4 / N38 - cylindrical magnet

Specification / characteristics - MW 12x4 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010019
GTIN/EAN	5906301810186
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	12 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	3.39 g
Magnetization Direction	↑ axial
Load capacity ~ ?	3.45 kg / 33.81 N
Magnetic Induction ~ ?	343.64 mT / 3436 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 12x4 / 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 magnet - technical parameters

These data constitute the outcome of a physical calculation. Values were calculated on models for the material Nd₂Fe₁₄B. Operational conditions might slightly differ from theoretical values. Treat these calculations as a preliminary roadmap when designing systems.

Table 1: Static force (force vs gap) - interaction chart
MW 12x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3435 Gs 343.5 mT	3.45 kg / 7.61 lbs 3450.0 g / 33.8 N	medium risk
1 mm	2950 Gs 295.0 mT	2.54 kg / 5.61 lbs 2544.7 g / 25.0 N	medium risk
2 mm	2423 Gs 242.3 mT	1.72 kg / 3.79 lbs 1717.5 g / 16.8 N	weak grip
3 mm	1935 Gs 193.5 mT	1.09 kg / 2.41 lbs 1094.6 g / 10.7 N	weak grip
5 mm	1190 Gs 119.0 mT	0.41 kg / 0.91 lbs 413.8 g / 4.1 N	weak grip
10 mm	382 Gs 38.2 mT	0.04 kg / 0.09 lbs 42.7 g / 0.4 N	weak grip
15 mm	156 Gs 15.6 mT	0.01 kg / 0.02 lbs 7.1 g / 0.1 N	weak grip
20 mm	76 Gs 7.6 mT	0.00 kg / 0.00 lbs 1.7 g / 0.0 N	weak grip
30 mm	26 Gs 2.6 mT	0.00 kg / 0.00 lbs 0.2 g / 0.0 N	weak grip
50 mm	6 Gs 0.6 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	weak grip

Magnetic force decreases significantly with every mm of gap. Note that every additional insulation layer (e.g., contamination, paint, rust) noticeably weakens the grip. Neodymiums operate optimally in perfect adhesion; distance kills the force. Analyze how flashily the pull force plummet, when the magnet does not touch directly to the metal substrate. When calculating the arrangement, eliminate redundant distances.

Table 2: Sliding force (vertical surface)
MW 12x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.69 kg / 1.52 lbs 690.0 g / 6.8 N
1 mm	Stal (~0.2)	0.51 kg / 1.12 lbs 508.0 g / 5.0 N
2 mm	Stal (~0.2)	0.34 kg / 0.76 lbs 344.0 g / 3.4 N
3 mm	Stal (~0.2)	0.22 kg / 0.48 lbs 218.0 g / 2.1 N
5 mm	Stal (~0.2)	0.08 kg / 0.18 lbs 82.0 g / 0.8 N
10 mm	Stal (~0.2)	0.01 kg / 0.02 lbs 8.0 g / 0.1 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 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 defines the theoretical shear load needed to start the sliding of the magnet down along a upright steel plate (assuming standard friction coefficient). This parameter varies with the air gap between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 12x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.04 kg / 2.28 lbs 1035.0 g / 10.2 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.69 kg / 1.52 lbs 690.0 g / 6.8 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.35 kg / 0.76 lbs 345.0 g / 3.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.73 kg / 3.80 lbs 1725.0 g / 16.9 N

When placing a element on a vertical surface (e.g., a board), it will only hold only approx. 20%-30% of nominal attraction strength. Gravitational force as well as a weak degree of grip cause that products move down faster than they pop off the substrate. Planning a hanger? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will slip down under a significantly smaller load. Utilizing a rubberized layer can significantly improve the result.

Table 4: Material efficiency (substrate influence) - power losses
MW 12x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.35 kg / 0.76 lbs 345.0 g / 3.4 N
1 mm	25%	0.86 kg / 1.90 lbs 862.5 g / 8.5 N
2 mm	50%	1.73 kg / 3.80 lbs 1725.0 g / 16.9 N
3 mm	75%	2.59 kg / 5.70 lbs 2587.5 g / 25.4 N
5 mm	100%	3.45 kg / 7.61 lbs 3450.0 g / 33.8 N
10 mm	100%	3.45 kg / 7.61 lbs 3450.0 g / 33.8 N
11 mm	100%	3.45 kg / 7.61 lbs 3450.0 g / 33.8 N
12 mm	100%	3.45 kg / 7.61 lbs 3450.0 g / 33.8 N

A thin metal plate is unable to take in the entire magnetic field, which squanders power of the magnet. If you mount a strong magnet to a thin surface, the flux will penetrate right through and the holding will be smaller. To squeeze full efficiency of this magnet's potential, you need a suitably thick piece of metal. The material oversaturation means that on thin elements (e.g., thin profiles), the magnet holds weaker. We advise picking the steel thickness according to the table below.

Table 5: Thermal stability (material behavior) - thermal limit
MW 12x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	3.45 kg / 7.61 lbs 3450.0 g / 33.8 N	OK
40 °C	-2.2%	3.37 kg / 7.44 lbs 3374.1 g / 33.1 N	OK
60 °C	-4.4%	3.30 kg / 7.27 lbs 3298.2 g / 32.4 N
80 °C	-6.6%	3.22 kg / 7.10 lbs 3222.3 g / 31.6 N
100 °C	-28.8%	2.46 kg / 5.42 lbs 2456.4 g / 24.1 N

Classic neodymiums change their properties parameters above the temperature limit. Protect against heat – excessive heat can irreversibly demagnetize this magnet. With increasing heat, the neodymium's power temporarily drops. Do not use this product close to heaters exceeding its safe range. Ignoring the limit will result in permanent loss of magnetism.

*Technical advisory: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Thin magnets (low permeance coefficient) risk losing magnetic properties sooner than taller cylinders. The danger warning in the table signals permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 12x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	8.23 kg / 18.13 lbs 4 952 Gs	1.23 kg / 2.72 lbs 1234 g / 12.1 N	N/A
1 mm	7.16 kg / 15.79 lbs 6 410 Gs	1.07 kg / 2.37 lbs 1074 g / 10.5 N	6.45 kg / 14.21 lbs ~0 Gs
2 mm	6.07 kg / 13.38 lbs 5 900 Gs	0.91 kg / 2.01 lbs 910 g / 8.9 N	5.46 kg / 12.04 lbs ~0 Gs
3 mm	5.03 kg / 11.09 lbs 5 372 Gs	0.75 kg / 1.66 lbs 754 g / 7.4 N	4.53 kg / 9.98 lbs ~0 Gs
5 mm	3.29 kg / 7.25 lbs 4 342 Gs	0.49 kg / 1.09 lbs 493 g / 4.8 N	2.96 kg / 6.52 lbs ~0 Gs
10 mm	0.99 kg / 2.18 lbs 2 379 Gs	0.15 kg / 0.33 lbs 148 g / 1.5 N	0.89 kg / 1.96 lbs ~0 Gs
20 mm	0.10 kg / 0.22 lbs 764 Gs	0.02 kg / 0.03 lbs 15 g / 0.1 N	0.09 kg / 0.20 lbs ~0 Gs
50 mm	0.00 kg / 0.00 lbs 85 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 52 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 34 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 23 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 17 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 12 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two strong neodymiums interact from a much further distance than a neodymium and metal setup. The connection of two magnets generates a stronger field and a further horizon of operation. Want to build a powerful holder? Apply two magnets instead of one magnet and a striker plate. Exercise caution that when attracting two neodymiums, the collision energy is extreme. The levitation is slightly lower than the attraction, but still large.
*Field value in repulsion mode reaches ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Attention: Calculations apply to shear force of a pair of matching magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Hazards (electronics) - warnings
MW 12x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	5.5 cm
Hearing aid	10 Gs (1.0 mT)	4.5 cm
Mechanical watch	20 Gs (2.0 mT)	3.5 cm
Mobile device	40 Gs (4.0 mT)	3.0 cm
Remote	50 Gs (5.0 mT)	2.5 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 serious hazard to electronics and medical implants. These NdFeB products produce a field that disrupts operation of sensitive medical devices. Notice: the invisible magnetic field passes through tissues and housings. Special caution must be taken by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, car keys, membranes, and displays. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - collision effects
MW 12x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	32.42 km/h (9.01 m/s)	0.14 J
30 mm	55.73 km/h (15.48 m/s)	0.41 J
50 mm	71.94 km/h (19.98 m/s)	0.68 J
100 mm	101.74 km/h (28.26 m/s)	1.35 J

NdFeB products are delicate – a collision with steel can result in shattering. Watch the impact speed – a neodymium left loose turns into a projectile. Kinetic force can cause material chips or injury to fingers. Hold the magnet firmly during mounting 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: Corrosion resistance
MW 12x4 / 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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Flux)
MW 12x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	4 114 Mx	41.1 µWb
P_c Coefficient	0.44	Low (Flat)

Flux value passing through the pole surface. Key data when building generators and motors. The P_c coefficient determines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MW 12x4 / N38

Environment	Effective steel pull	Effect
Air (land)	3.45 kg	Standard
Water (riverbed)	3.95 kg (+0.50 kg buoyancy gain)	+14.5%

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

Contrary to myths, water does not block the magnetic field. However, remember the water resistance when pulling the rope quickly.

1. Wall mount (shear)

*Warning: On a vertical surface, the magnet holds just approx. 20-30% of its perpendicular strength.

2. Steel saturation

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

3. Temperature resistance

*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) = 0.44

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

Chemical composition

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%

Environmental data

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: 010019-2026

Measurement Calculator

Pulling force

Force in lbs

Field Strength

Induction (T)

Input a value in a box, to see all other values will update automatically.

UMS 25x10.5x5.5x8 / N38 - conical magnetic holder

9.72 ZŁ brutto / pcs

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MPL 50x20x10 / N38 - lamellar magnet

43.05 ZŁ brutto / pcs

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CM PML-6 / N45 - magnetic gripper

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MPL 25x15x2 / N38 - lamellar magnet

2.39 ZŁ brutto / pcs

The offered product is an exceptionally strong cylindrical magnet, made from durable NdFeB material, which, at dimensions of Ø12x4 mm, guarantees maximum efficiency. The MW 12x4 / N38 component is characterized by a tolerance of ±0.1mm and industrial build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 3.45 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is created for building generators, advanced Hall effect sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 33.81 N with a weight of only 3.39 g, this rod is indispensable in miniature devices and wherever low weight is crucial.

Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 12.1 mm) using epoxy glues. To ensure long-term durability in automation, 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 extreme miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø12x4), 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 12 mm and height 4 mm. The value of 33.81 N means that the magnet is capable of holding a weight many times exceeding its own mass of 3.39 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, 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 12 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.

Pros and cons of Nd₂Fe₁₄B magnets.

Advantages

In addition to their magnetic capacity, neodymium magnets provide the following advantages:

They do not lose magnetism, even over around ten years – the reduction in power is only ~1% (based on measurements),
They are resistant to demagnetization induced by external field influence,
In other words, due to the aesthetic layer of silver, the element looks attractive,
They are known for high magnetic induction at the operating surface, making them more effective,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
Possibility of detailed modeling as well as adjusting to precise applications,
Fundamental importance in innovative solutions – they find application in computer drives, brushless drives, precision medical tools, and complex engineering applications.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Disadvantages of NdFeB magnets:

At strong impacts they can crack, therefore we advise placing them in strong housings. 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 recommend our specialized [AH] magnets, which work effectively even at 230°C.
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
Due to limitations in creating nuts and complex shapes in magnets, we propose using casing - magnetic mechanism.
Possible danger related to microscopic parts of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. Additionally, small elements of these devices are able to be problematic in diagnostics medical after entering the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

Optimal lifting capacity of a neodymium magnet – what affects it?

Information about lifting capacity is the result of a measurement for ideal contact conditions, including:

with the contact of a sheet made of special test steel, guaranteeing maximum field concentration
with a thickness of at least 10 mm
characterized by even structure
with zero gap (without coatings)
under vertical application of breakaway force (90-degree angle)
in temp. approx. 20°C

Impact of factors on magnetic holding capacity in practice

In practice, the actual lifting capacity results from many variables, ranked from crucial:

Air gap (betwixt the magnet and the metal), because even a tiny clearance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
Steel grade – ideal substrate is pure iron steel. Stainless steels may attract less.
Surface structure – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
Temperature influence – hot environment reduces pulling force. Too high temperature can permanently demagnetize the magnet.

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Warnings

Impact on smartphones

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

Heat warning

Avoid heat. NdFeB magnets are susceptible to temperature. If you need resistance above 80°C, ask us about special high-temperature series (H, SH, UH).

Fire warning

Fire hazard: Rare earth powder is highly flammable. Do not process magnets without safety gear as this may cause fire.

Caution required

Use magnets with awareness. Their huge power can surprise even experienced users. Be vigilant and respect their power.

ICD Warning

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

Safe distance

Data protection: Neodymium magnets can ruin payment cards and sensitive devices (pacemakers, medical aids, timepieces).

Do not give to children

NdFeB magnets are not suitable for play. Accidental ingestion of a few magnets can lead to them pinching intestinal walls, which poses a direct threat to life and necessitates urgent medical intervention.

Fragile material

NdFeB magnets are sintered ceramics, meaning they are prone to chipping. Impact of two magnets will cause them shattering into small pieces.

Bone fractures

Danger of trauma: The pulling power is so immense that it can cause hematomas, crushing, and even bone fractures. Protective gloves are recommended.

Warning for allergy sufferers

Some people have a contact allergy to Ni, which is the standard coating for neodymium magnets. Prolonged contact can result in dermatitis. We recommend use safety gloves.

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

MW 12x4 / N38 - cylindrical magnet

Product card - MW 12x4 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the magnet - technical parameters

Table 1: Static force (force vs gap) - interaction chart MW 12x4 / N38

Table 2: Sliding force (vertical surface) MW 12x4 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MW 12x4 / N38

Table 4: Material efficiency (substrate influence) - power losses MW 12x4 / N38

Table 5: Thermal stability (material behavior) - thermal limit MW 12x4 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MW 12x4 / N38

Table 7: Hazards (electronics) - warnings MW 12x4 / N38

Table 8: Collisions (cracking risk) - collision effects MW 12x4 / N38

Table 9: Corrosion resistance MW 12x4 / N38

Table 10: Electrical data (Flux) MW 12x4 / N38

Table 11: Hydrostatics and buoyancy MW 12x4 / N38

1. Wall mount (shear)

2. Steel saturation

3. Temperature resistance

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

Chemical composition

Environmental data

Pulling force

Field Strength

See also proposals

UMS 25x10.5x5.5x8 / N38 - conical magnetic holder

MPL 50x20x10 / N38 - lamellar magnet

CM PML-6 / N45 - magnetic gripper

MPL 25x15x2 / N38 - lamellar magnet

Pros and cons of Nd2Fe14B magnets.

Advantages

Limitations

Holding force characteristics

Optimal lifting capacity of a neodymium magnet – what affects it?

Impact of factors on magnetic holding capacity in practice

Warnings

Impact on smartphones

Heat warning

Fire warning

Caution required

ICD Warning

Safe distance

Do not give to children

Fragile material

Bone fractures

Warning for allergy sufferers

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - interaction chart
MW 12x4 / N38

Table 2: Sliding force (vertical surface)
MW 12x4 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 12x4 / N38

Table 4: Material efficiency (substrate influence) - power losses
MW 12x4 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MW 12x4 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 12x4 / N38

Table 7: Hazards (electronics) - warnings
MW 12x4 / N38

Table 8: Collisions (cracking risk) - collision effects
MW 12x4 / N38

Table 9: Corrosion resistance
MW 12x4 / N38

Table 10: Electrical data (Flux)
MW 12x4 / N38

Table 11: Hydrostatics and buoyancy
MW 12x4 / N38

Pros and cons of Nd₂Fe₁₄B magnets.