Product on order Ships in 3-5 days

MW 19x4 / 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 010038

GTIN/EAN: 5906301810377

Diameter Ø

19 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

8.51 g

Magnetization Direction

↑ axial

Load capacity

4.96 kg / 48.62 N

Magnetic Induction

240.51 mT / 2405 Gs

Coating

[Zn] Zinc

product details »

4.80 ZŁ with VAT / pcs + price for transport

3.90 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

3.90 ZŁ

4.80 ZŁ

price from 200 pcs

3.67 ZŁ

4.51 ZŁ

price from 650 pcs

3.43 ZŁ

4.22 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Need help making a decision?

Pick up the phone and ask +48 888 99 98 98 alternatively get in touch through contact form the contact section.
Specifications and shape of magnetic components can be verified with our our magnetic calculator.

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

Physical properties - MW 19x4 / N38 - cylindrical magnet

Specification / characteristics - MW 19x4 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010038
GTIN/EAN	5906301810377
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	19 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	8.51 g
Magnetization Direction	↑ axial
Load capacity ~ ?	4.96 kg / 48.62 N
Magnetic Induction ~ ?	240.51 mT / 2405 Gs
Coating	[Zn] Zinc
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 19x4 / N38 - cylindrical magnet

properties	values	units
remenance Br [min. - max.] ?	12.2-12.6	kGs
remenance Br [min. - max.] ?	1220-1260	mT
coercivity bHc ?	10.8-11.5	kOe
coercivity bHc ?	860-915	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	36-38	BH max MGOe
energy density [min. - max.] ?	287-303	BH max KJ/m
max. temperature ?	≤ 80	°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	312 - 380	°C
Curie Temperature TF	593 - 716	°F
Specific resistance	150	μΩ⋅cm
Bending strength	250	MPa
Compressive strength	1000~1100	MPa
Thermal expansion parallel (∥) to orientation (M)	(3-4) x 10^-6	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10^-6	°C^-1
Young's modulus	1.7 x 10⁴	kg/mm²

Technical simulation of the assembly - data

These information represent the result of a physical analysis. Values were calculated on models for the material Nd₂Fe₁₄B. Real-world performance may differ. Use these calculations as a supplementary guide for designers.

Table 1: Static pull force (force vs gap) - interaction chart
MW 19x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2405 Gs 240.5 mT	4.96 kg / 10.93 lbs 4960.0 g / 48.7 N	medium risk
1 mm	2239 Gs 223.9 mT	4.30 kg / 9.48 lbs 4299.0 g / 42.2 N	medium risk
2 mm	2033 Gs 203.3 mT	3.55 kg / 7.82 lbs 3547.4 g / 34.8 N	medium risk
3 mm	1811 Gs 181.1 mT	2.81 kg / 6.20 lbs 2813.0 g / 27.6 N	medium risk
5 mm	1376 Gs 137.6 mT	1.63 kg / 3.58 lbs 1625.2 g / 15.9 N	safe
10 mm	635 Gs 63.5 mT	0.35 kg / 0.76 lbs 346.3 g / 3.4 N	safe
15 mm	308 Gs 30.8 mT	0.08 kg / 0.18 lbs 81.2 g / 0.8 N	safe
20 mm	164 Gs 16.4 mT	0.02 kg / 0.05 lbs 23.2 g / 0.2 N	safe
30 mm	61 Gs 6.1 mT	0.00 kg / 0.01 lbs 3.1 g / 0.0 N	safe
50 mm	15 Gs 1.5 mT	0.00 kg / 0.00 lbs 0.2 g / 0.0 N	safe

Pulling power decreases drastically per each millimeter of gap. Remember that even a microscopic distance (e.g., contamination, varnish, rust) significantly diminishes the holding power. Neodymiums hold strongest during direct contact; distance drastically cuts the power. Observe how quickly the pull force drop, when the magnet does not adhere flatly to the metal substrate. When calculating the arrangement, discard redundant distances.

Table 2: Slippage hold (wall)
MW 19x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.99 kg / 2.19 lbs 992.0 g / 9.7 N
1 mm	Stal (~0.2)	0.86 kg / 1.90 lbs 860.0 g / 8.4 N
2 mm	Stal (~0.2)	0.71 kg / 1.57 lbs 710.0 g / 7.0 N
3 mm	Stal (~0.2)	0.56 kg / 1.24 lbs 562.0 g / 5.5 N
5 mm	Stal (~0.2)	0.33 kg / 0.72 lbs 326.0 g / 3.2 N
10 mm	Stal (~0.2)	0.07 kg / 0.15 lbs 70.0 g / 0.7 N
15 mm	Stal (~0.2)	0.02 kg / 0.04 lbs 16.0 g / 0.2 N
20 mm	Stal (~0.2)	0.00 kg / 0.01 lbs 4.0 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

This section defines the theoretical shear load sufficient to initiate the downward movement of the magnet downwards along a upright steel plate (considering typical friction coefficient). The holding force is relative to the gap size between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 19x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.49 kg / 3.28 lbs 1488.0 g / 14.6 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.99 kg / 2.19 lbs 992.0 g / 9.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.50 kg / 1.09 lbs 496.0 g / 4.9 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.48 kg / 5.47 lbs 2480.0 g / 24.3 N

When mounting a magnet on a vertical surface (e.g., a board), it you can count on barely about 1/5 of its nominal power. Gravitational force and a weak degree of grip cause that products slip faster than they detach. Planning a hanger? Note that the sliding force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the holder will give way down under a significantly smaller load. Application of an anti-slip layer can drastically increase the grip.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 19x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.50 kg / 1.09 lbs 496.0 g / 4.9 N
1 mm	25%	1.24 kg / 2.73 lbs 1240.0 g / 12.2 N
2 mm	50%	2.48 kg / 5.47 lbs 2480.0 g / 24.3 N
3 mm	75%	3.72 kg / 8.20 lbs 3720.0 g / 36.5 N
5 mm	100%	4.96 kg / 10.93 lbs 4960.0 g / 48.7 N
10 mm	100%	4.96 kg / 10.93 lbs 4960.0 g / 48.7 N
11 mm	100%	4.96 kg / 10.93 lbs 4960.0 g / 48.7 N
12 mm	100%	4.96 kg / 10.93 lbs 4960.0 g / 48.7 N

A thin sheet is incapable of absorb the full magnetic flux, which weakens actual performance of the holder. Should you install a neodymium to a too thin substrate, the magnetism will penetrate right through and the attraction force will be weaker. To utilize 100% of this magnet's potential, you require a sufficiently solid piece of metal. The material oversaturation causes that on thin elements (e.g., car bodies), the product holds weaker. We recommend selecting the steel thickness based on the following data.

Table 5: Working in heat (stability) - power drop
MW 19x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	4.96 kg / 10.93 lbs 4960.0 g / 48.7 N	OK
40 °C	-2.2%	4.85 kg / 10.69 lbs 4850.9 g / 47.6 N	OK
60 °C	-4.4%	4.74 kg / 10.45 lbs 4741.8 g / 46.5 N
80 °C	-6.6%	4.63 kg / 10.21 lbs 4632.6 g / 45.4 N
100 °C	-28.8%	3.53 kg / 7.79 lbs 3531.5 g / 34.6 N

Standard neodymium magnets lose power past the thermal threshold. Watch out for overheating – heat can irreversibly damage this magnet. As the temperature rises, the neodymium's capacity briefly decreases. Avoid using this magnet in hot environments higher than its operating temperature limit. Ignoring the limit will result in irreversible degradation of magnetic properties.

*Important note: Temperature resistance depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (pancake types) may lose charge permanently sooner than long magnets. Warning indicator in the table signals permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - field collision
MW 19x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	10.11 kg / 22.28 lbs 3 990 Gs	1.52 kg / 3.34 lbs 1516 g / 14.9 N	N/A
1 mm	9.48 kg / 20.89 lbs 4 657 Gs	1.42 kg / 3.13 lbs 1421 g / 13.9 N	8.53 kg / 18.80 lbs ~0 Gs
2 mm	8.76 kg / 19.31 lbs 4 477 Gs	1.31 kg / 2.90 lbs 1314 g / 12.9 N	7.88 kg / 17.38 lbs ~0 Gs
3 mm	8.00 kg / 17.64 lbs 4 279 Gs	1.20 kg / 2.65 lbs 1200 g / 11.8 N	7.20 kg / 15.88 lbs ~0 Gs
5 mm	6.47 kg / 14.25 lbs 3 846 Gs	0.97 kg / 2.14 lbs 970 g / 9.5 N	5.82 kg / 12.83 lbs ~0 Gs
10 mm	3.31 kg / 7.30 lbs 2 753 Gs	0.50 kg / 1.10 lbs 497 g / 4.9 N	2.98 kg / 6.57 lbs ~0 Gs
20 mm	0.71 kg / 1.56 lbs 1 271 Gs	0.11 kg / 0.23 lbs 106 g / 1.0 N	0.64 kg / 1.40 lbs ~0 Gs
50 mm	0.02 kg / 0.04 lbs 193 Gs	0.00 kg / 0.01 lbs 2 g / 0.0 N	0.01 kg / 0.03 lbs ~0 Gs
60 mm	0.01 kg / 0.01 lbs 121 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
70 mm	0.00 kg / 0.01 lbs 81 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 56 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 41 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 30 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two magnetic products interact from a much further distance than a neodymium and metal combination. Such a system of two magnets creates a more powerful interaction and a wider radius of operation. Want to build a strong closure? Apply two magnets instead of a neodymium and a striker plate. Exercise caution that when connecting a pair of magnets, the impact force is huge. The repulsion force is marginally weaker than the connection force, but still large.
*Flux density in repulsion mode is approximately ~0 Gs in the exact middle of the gap (due to field cancellation).
Important: Results demonstrate shear force of dual matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - precautionary measures
MW 19x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	7.5 cm
Hearing aid	10 Gs (1.0 mT)	6.0 cm
Timepiece	20 Gs (2.0 mT)	5.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	4.0 cm
Car key	50 Gs (5.0 mT)	3.5 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

A strong magnetic field poses a real danger to electronics as well as medical implants. These neodymiums generate a field that prevents correct functioning of sensitive medical devices. Notice: the invisible magnetic field acts through matter and plastic. Special caution must be exercised by people with cochlear implants and insulin pumps. Also at risk are: mechanical watches, remotes, membranes, and screens. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MW 19x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	25.39 km/h (7.05 m/s)	0.21 J
30 mm	42.19 km/h (11.72 m/s)	0.58 J
50 mm	54.44 km/h (15.12 m/s)	0.97 J
100 mm	76.99 km/h (21.39 m/s)	1.95 J

Neodymium magnets are prone to chipping – a strong collision with metal causes immediate chipping. Control the attraction moment – a magnet released freely turns into a projectile. Kinetic force can trigger coating fragments or injury to fingers. Hold the magnet firmly during bringing near metal so it doesn't slam with momentum against the metal. A collision at high speed ends with a crack of the neodymium. Use safety goggles when working with large magnets.

Table 9: Anti-corrosion coating durability
MW 19x4 / N38

Technical parameter	Value / Description
Coating type	[Zn] Zinc
Layer structure	Zn (Zinc)
Layer thickness	8-15 µm
Salt spray test (SST) ?	48 h
Recommended environment	Indoors / Garage

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
MW 19x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	7 831 Mx	78.3 µWb
P_c Coefficient	0.30	Low (Flat)

Flux value emitted by the pole surface. Essential parameter when building generators and motors. P_c value determines the working geometry.

Table 11: Underwater work (magnet fishing)
MW 19x4 / N38

Environment	Effective steel pull	Effect
Air (land)	4.96 kg	Standard
Water (riverbed)	5.68 kg (+0.72 kg buoyancy gain)	+14.5%

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

In water, the magnet feels stronger thanks to Archimedes' principle. Buoyancy helps in lifting finds.

1. Sliding resistance

*Note: On a vertical wall, the magnet retains only approx. 20-30% of its nominal pull.

2. Plate thickness effect

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

3. Heat tolerance

*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) = 0.30

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

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%

Ecology and recycling (GPSR)

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: 010038-2026

Measurement Calculator

Magnet pull force

Kilograms (kg)

Force (N)

Force in lbs

Magnetic Field

Gauss (Gs)

Tesla (T)

Input a figure in just one slot to see the conversion in the other units immediately.

Other deals

Product on order Ships in 3-5 days

UMP 107x40 [M8+M10] GW F400 Lina / N38 - search holder

450.00 ZŁ brutto / pcs

Product on order Ships in 3-5 days

MW 16x3 / N38 - cylindrical magnet

1.734 ZŁ brutto / pcs

Product on order Ships in 3-5 days

SMZR 32x225 / N52 - magnetic separator with handle

676.50 ZŁ brutto / pcs

Product on order Ships in 3-5 days

MW 45x30 / N38 - cylindrical magnet

136.80 ZŁ brutto / pcs

This product is an extremely powerful cylinder magnet, composed of modern NdFeB material, which, at dimensions of Ø19x4 mm, guarantees maximum efficiency. This specific item boasts an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 4.96 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is ideal for building generators, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 48.62 N with a weight of only 8.51 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 stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Magnets NdFeB grade N38 are suitable for the majority of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø19x4), 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 19 mm and height 4 mm. The value of 48.62 N means that the magnet is capable of holding a weight many times exceeding its own mass of 8.51 g. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 4 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 through the diameter if your project requires it.

Advantages as well as disadvantages of rare earth magnets.

Benefits

Besides their exceptional strength, neodymium magnets offer the following advantages:

They do not lose strength, even during approximately 10 years – the reduction in power is only ~1% (based on measurements),
They retain their magnetic properties even under close interference source,
The use of an metallic finish of noble metals (nickel, gold, silver) causes the element to look better,
Neodymium magnets deliver maximum magnetic induction on a their surface, which increases force concentration,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
Possibility of accurate forming and adapting to individual requirements,
Huge importance in high-tech industry – they serve a role in magnetic memories, electromotive mechanisms, diagnostic systems, and modern systems.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:

At very strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
Limited possibility of producing threads in the magnet and complex shapes - preferred is casing - mounting mechanism.
Potential hazard resulting from small fragments of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child health protection. It is also worth noting that small elements of these products are able to disrupt the diagnostic process medical in case of swallowing.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

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

The specified lifting capacity represents the peak performance, obtained under laboratory conditions, meaning:

using a plate made of low-carbon steel, serving as a ideal flux conductor
with a thickness minimum 10 mm
with a surface perfectly flat
with total lack of distance (no paint)
under vertical force vector (90-degree angle)
at ambient temperature approx. 20 degrees Celsius

Practical lifting capacity: influencing factors

Effective lifting capacity is influenced by specific conditions, mainly (from most important):

Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
Loading method – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet exhibits much less (typically approx. 20-30% of nominal force).
Steel thickness – too thin steel does not close the flux, causing part of the power to be escaped to the other side.
Steel grade – ideal substrate is high-permeability steel. Cast iron may have worse magnetic properties.
Surface quality – the more even the surface, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
Thermal environment – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.

H&S for magnets

Conscious usage

Before starting, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.

Machining danger

Dust generated during machining of magnets is self-igniting. Avoid drilling into magnets without proper cooling and knowledge.

Danger to the youngest

Absolutely store magnets out of reach of children. Choking hazard is significant, and the effects of magnets clamping inside the body are tragic.

Allergic reactions

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If an allergic reaction happens, immediately stop working with magnets and use protective gear.

Electronic devices

Data protection: Neodymium magnets can damage payment cards and sensitive devices (heart implants, hearing aids, timepieces).

Life threat

Medical warning: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Eye protection

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.

Power loss in heat

Avoid heat. Neodymium magnets are sensitive to temperature. If you need resistance above 80°C, ask us about HT versions (H, SH, UH).

Threat to navigation

Remember: rare earth magnets produce a field that disrupts sensitive sensors. Keep a separation from your mobile, tablet, and navigation systems.

Finger safety

Large magnets can crush fingers instantly. Under no circumstances put your hand between two strong magnets.

Caution! More info about hazards in the article: Safety of working with magnets.

MW 19x4 / N38 - cylindrical magnet

Physical properties - MW 19x4 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the assembly - data

Table 1: Static pull force (force vs gap) - interaction chart MW 19x4 / N38

Table 2: Slippage hold (wall) MW 19x4 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MW 19x4 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MW 19x4 / N38

Table 5: Working in heat (stability) - power drop MW 19x4 / N38

Table 6: Two magnets (repulsion) - field collision MW 19x4 / N38

Table 7: Protective zones (implants) - precautionary measures MW 19x4 / N38

Table 8: Collisions (kinetic energy) - warning MW 19x4 / N38

Table 9: Anti-corrosion coating durability MW 19x4 / N38

Table 10: Electrical data (Pc) MW 19x4 / N38

Table 11: Underwater work (magnet fishing) MW 19x4 / N38

1. Sliding resistance

2. Plate thickness effect

3. Heat tolerance

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

Elemental analysis

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Field

Other deals

UMP 107x40 [M8+M10] GW F400 Lina / N38 - search holder

MW 16x3 / N38 - cylindrical magnet

SMZR 32x225 / N52 - magnetic separator with handle

MW 45x30 / N38 - cylindrical magnet

Advantages as well as disadvantages of rare earth magnets.

Benefits

Weaknesses

Pull force analysis

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

Practical lifting capacity: influencing factors

H&S for magnets

Conscious usage

Machining danger

Danger to the youngest

Allergic reactions

Electronic devices

Life threat

Eye protection

Power loss in heat

Threat to navigation

Finger safety

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - interaction chart
MW 19x4 / N38

Table 2: Slippage hold (wall)
MW 19x4 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 19x4 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MW 19x4 / N38

Table 5: Working in heat (stability) - power drop
MW 19x4 / N38

Table 6: Two magnets (repulsion) - field collision
MW 19x4 / N38

Table 7: Protective zones (implants) - precautionary measures
MW 19x4 / N38

Table 8: Collisions (kinetic energy) - warning
MW 19x4 / N38

Table 9: Anti-corrosion coating durability
MW 19x4 / N38

Table 10: Electrical data (P_c)
MW 19x4 / N38

Table 11: Underwater work (magnet fishing)
MW 19x4 / N38