Product available Ships tomorrow

MW 20x5 / 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 010044

GTIN/EAN: 5906301810438

5.00

Diameter Ø

20 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

11.78 g

Magnetization Direction

↑ axial

Load capacity

6.93 kg / 67.95 N

Magnetic Induction

277.16 mT / 2772 Gs

Coating

[NiCuNi] Nickel

technical details »

5.56 ZŁ with VAT / pcs + price for transport

4.52 ZŁ net + 23% VAT / pcs

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Detailed specification - MW 20x5 / N38 - cylindrical magnet

Specification / characteristics - MW 20x5 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010044
GTIN/EAN	5906301810438
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	20 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	11.78 g
Magnetization Direction	↑ axial
Load capacity ~ ?	6.93 kg / 67.95 N
Magnetic Induction ~ ?	277.16 mT / 2772 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 20x5 / 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 information represent the result of a mathematical simulation. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Real-world conditions may deviate from the simulation results. Treat these data as a supplementary guide when designing systems.

Table 1: Static pull force (pull vs gap) - power drop
MW 20x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2771 Gs 277.1 mT	6.93 kg / 15.28 LBS 6930.0 g / 68.0 N	medium risk
1 mm	2573 Gs 257.3 mT	5.97 kg / 13.17 LBS 5975.0 g / 58.6 N	medium risk
2 mm	2340 Gs 234.0 mT	4.94 kg / 10.89 LBS 4940.1 g / 48.5 N	medium risk
3 mm	2092 Gs 209.2 mT	3.95 kg / 8.70 LBS 3948.3 g / 38.7 N	medium risk
5 mm	1611 Gs 161.1 mT	2.34 kg / 5.17 LBS 2343.4 g / 23.0 N	medium risk
10 mm	775 Gs 77.5 mT	0.54 kg / 1.19 LBS 541.6 g / 5.3 N	low risk
15 mm	387 Gs 38.7 mT	0.13 kg / 0.30 LBS 135.0 g / 1.3 N	low risk
20 mm	211 Gs 21.1 mT	0.04 kg / 0.09 LBS 40.2 g / 0.4 N	low risk
30 mm	80 Gs 8.0 mT	0.01 kg / 0.01 LBS 5.7 g / 0.1 N	low risk
50 mm	20 Gs 2.0 mT	0.00 kg / 0.00 LBS 0.4 g / 0.0 N	low risk

Grip strength decreases significantly per each millimeter of distance. Keep in mind that even a very thin break (e.g., contamination, paint, dust) strongly weakens the grip. Neodymiums work optimally during direct contact; air break kills the force. See how rapidly the load capacity drop, when the product does not touch directly to the metal substrate. When planning the arrangement, eliminate redundant distances.

Table 2: Sliding hold (vertical surface)
MW 20x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.39 kg / 3.06 LBS 1386.0 g / 13.6 N
1 mm	Stal (~0.2)	1.19 kg / 2.63 LBS 1194.0 g / 11.7 N
2 mm	Stal (~0.2)	0.99 kg / 2.18 LBS 988.0 g / 9.7 N
3 mm	Stal (~0.2)	0.79 kg / 1.74 LBS 790.0 g / 7.7 N
5 mm	Stal (~0.2)	0.47 kg / 1.03 LBS 468.0 g / 4.6 N
10 mm	Stal (~0.2)	0.11 kg / 0.24 LBS 108.0 g / 1.1 N
15 mm	Stal (~0.2)	0.03 kg / 0.06 LBS 26.0 g / 0.3 N
20 mm	Stal (~0.2)	0.01 kg / 0.02 LBS 8.0 g / 0.1 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

This section indicates the theoretical force required to initiate the sliding of the magnet down on a vertical metal surface (considering typical friction coefficient). This parameter is relative to the gap size between the magnet and the surface.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 20x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.08 kg / 4.58 LBS 2079.0 g / 20.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.39 kg / 3.06 LBS 1386.0 g / 13.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.69 kg / 1.53 LBS 693.0 g / 6.8 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.47 kg / 7.64 LBS 3465.0 g / 34.0 N

When hanging a holder on a vertical surface (e.g., a fridge), it will maintain just approx. 1/5 of its maximum pull force. Gravitational force and a weak degree of grip mean that holders slip easier than they pull off. Designing a vertical fastening? Note that the sliding force is significantly lower than the maximum static pull force. On a smooth steel, the element will give way down under a significantly smaller load. Utilizing a rubberized layer can drastically raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 20x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.69 kg / 1.53 LBS 693.0 g / 6.8 N
1 mm	25%	1.73 kg / 3.82 LBS 1732.5 g / 17.0 N
2 mm	50%	3.47 kg / 7.64 LBS 3465.0 g / 34.0 N
3 mm	75%	5.20 kg / 11.46 LBS 5197.5 g / 51.0 N
5 mm	100%	6.93 kg / 15.28 LBS 6930.0 g / 68.0 N
10 mm	100%	6.93 kg / 15.28 LBS 6930.0 g / 68.0 N
11 mm	100%	6.93 kg / 15.28 LBS 6930.0 g / 68.0 N
12 mm	100%	6.93 kg / 15.28 LBS 6930.0 g / 68.0 N

A thin metal plate is not enough to absorb the entire magnetic field, which wastes potential of the magnet. If you attach a powerful product to a too thin substrate, the field will penetrate right through and the holding will be smaller. To achieve the maximum of this magnet's power, you need a suitably thick backing of metal. The material oversaturation means that on thin elements (e.g., car bodies), the magnet holds weaker. We recommend selecting the steel thickness from these parameters.

Table 5: Thermal stability (stability) - power drop
MW 20x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	6.93 kg / 15.28 LBS 6930.0 g / 68.0 N	OK
40 °C	-2.2%	6.78 kg / 14.94 LBS 6777.5 g / 66.5 N	OK
60 °C	-4.4%	6.63 kg / 14.61 LBS 6625.1 g / 65.0 N
80 °C	-6.6%	6.47 kg / 14.27 LBS 6472.6 g / 63.5 N
100 °C	-28.8%	4.93 kg / 10.88 LBS 4934.2 g / 48.4 N

Ordinary NdFeB products change their properties strength above the temperature limit. Avoid high temperatures – excessive heat can permanently demagnetize this magnet. As the temperature rises, the magnet's force briefly decreases. Do not use this magnet close to heaters higher than its safe range. Exceeding the critical threshold will lead to irreversible degradation of magnetic properties.

*Important note: Thermal stability depends not only on the material grade, but also on the magnet's shape. Thin magnets (pancake types) may lose charge permanently sooner than long magnets. Warning indicator in the table indicates a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 20x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	14.87 kg / 32.79 LBS 4 380 Gs	2.23 kg / 4.92 LBS 2231 g / 21.9 N	N/A
1 mm	13.89 kg / 30.63 LBS 5 357 Gs	2.08 kg / 4.59 LBS 2084 g / 20.4 N	12.50 kg / 27.57 LBS ~0 Gs
2 mm	12.82 kg / 28.27 LBS 5 146 Gs	1.92 kg / 4.24 LBS 1923 g / 18.9 N	11.54 kg / 25.44 LBS ~0 Gs
3 mm	11.71 kg / 25.82 LBS 4 918 Gs	1.76 kg / 3.87 LBS 1757 g / 17.2 N	10.54 kg / 23.24 LBS ~0 Gs
5 mm	9.51 kg / 20.97 LBS 4 433 Gs	1.43 kg / 3.15 LBS 1427 g / 14.0 N	8.56 kg / 18.88 LBS ~0 Gs
10 mm	5.03 kg / 11.09 LBS 3 223 Gs	0.75 kg / 1.66 LBS 754 g / 7.4 N	4.53 kg / 9.98 LBS ~0 Gs
20 mm	1.16 kg / 2.56 LBS 1 549 Gs	0.17 kg / 0.38 LBS 174 g / 1.7 N	1.05 kg / 2.31 LBS ~0 Gs
50 mm	0.03 kg / 0.07 LBS 251 Gs	0.00 kg / 0.01 LBS 5 g / 0.0 N	0.03 kg / 0.06 LBS ~0 Gs
60 mm	0.01 kg / 0.03 LBS 159 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.02 LBS ~0 Gs
70 mm	0.01 kg / 0.01 LBS 107 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
80 mm	0.00 kg / 0.01 LBS 75 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 54 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 41 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnetic products attract each other from a wider radius than a neodymium and metal combination. Such a system of two magnets creates a more powerful interaction and a larger range of action. Planning to create a solid fastener? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when attracting two neodymiums, the impact force is extreme. The repulsion force is marginally weaker than the attraction, but still significant.
*Field value in repulsion mode drops to ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
* Figures apply to sliding force of two identical neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - warnings
MW 20x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	8.5 cm
Hearing aid	10 Gs (1.0 mT)	6.5 cm
Timepiece	20 Gs (2.0 mT)	5.5 cm
Mobile device	40 Gs (4.0 mT)	4.0 cm
Remote	50 Gs (5.0 mT)	4.0 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

Extremely neodym field is a large risk to electronic devices as well as pacemakers. These NdFeB products generate a field that disrupts operation of digital equipment. Remember: the invisible magnetic field acts through matter and housings. Exceptional care must be taken by people with cochlear implants and drug dispensers. Also at risk are: automatic timepieces, car keys, speakers, and screens. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Collisions (cracking risk) - collision effects
MW 20x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	25.63 km/h (7.12 m/s)	0.30 J
30 mm	42.39 km/h (11.77 m/s)	0.82 J
50 mm	54.70 km/h (15.19 m/s)	1.36 J
100 mm	77.35 km/h (21.49 m/s)	2.72 J

NdFeB products are very brittle – a strong collision with metal causes immediate chipping. Control the attraction moment – a neodymium left loose turns into a projectile. Kinetic force can trigger coating fragments or dangerous crushing to skin. Always hold the magnet during installation so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h means shattering of the magnet. Wear eye protection when handling with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 20x5 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (Flux)
MW 20x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	9 675 Mx	96.7 µWb
P_c Coefficient	0.35	Low (Flat)

Total magnetic flux emitted by the magnet pole. Key data when building generators as well as sensors. P_c value determines the working geometry.

Table 11: Physics of underwater searching
MW 20x5 / N38

Environment	Effective steel pull	Effect
Air (land)	6.93 kg	Standard
Water (riverbed)	7.93 kg (+1.00 kg buoyancy gain)	+14.5%

Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

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. Shear force

*Caution: On a vertical surface, the magnet holds only a fraction of its perpendicular strength.

2. Steel thickness impact

*Thin metal sheet (e.g. 0.5mm PC case) significantly 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) = 0.35

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: 010044-2026

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15.07 ZŁ brutto / pcs

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UMP 94x28 [3xM10] GW F300 GOLD / N38 - search holder

200.00 ZŁ brutto / pcs

The offered product is an incredibly powerful rod magnet, composed of advanced NdFeB material, which, with dimensions of Ø20x5 mm, guarantees optimal power. This specific item features high dimensional repeatability and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 6.93 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

This model is perfect 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 67.95 N with a weight of only 11.78 g, this rod is indispensable in miniature devices and wherever every gram matters.

Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 20.1 mm) using epoxy glues. To ensure long-term durability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Magnets N38 are strong enough for the majority 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 (Ø20x5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

This model is characterized by dimensions Ø20x5 mm, which, at a weight of 11.78 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 6.93 kg (force ~67.95 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

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 20 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 diametrically if your project requires it.

Strengths and weaknesses of rare earth magnets.

Benefits

Besides their exceptional field intensity, neodymium magnets offer the following advantages:

They have unchanged lifting capacity, and over around 10 years their performance decreases symbolically – ~1% (in testing),
Neodymium magnets remain extremely resistant to magnetic field loss caused by external magnetic fields,
The use of an aesthetic finish of noble metals (nickel, gold, silver) causes the element to present itself better,
They are known for high magnetic induction at the operating surface, which affects their effectiveness,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
Possibility of detailed creating and adapting to individual requirements,
Significant place in modern industrial fields – they serve a role in HDD drives, motor assemblies, precision medical tools, also modern systems.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Limitations

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
We suggest casing - magnetic mount, due to difficulties in creating threads inside the magnet and complicated shapes.
Possible danger related to microscopic parts of magnets can be dangerous, if swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these magnets can be problematic in diagnostics medical in case of swallowing.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what affects it?

Magnet power was determined for optimal configuration, assuming:

with the use of a sheet made of low-carbon steel, ensuring maximum field concentration
whose transverse dimension is min. 10 mm
with an ideally smooth touching surface
under conditions of ideal adhesion (metal-to-metal)
during detachment in a direction perpendicular to the plane
at temperature room level

Magnet lifting force in use – key factors

Effective lifting capacity is influenced by specific conditions, such as (from priority):

Space between magnet and steel – every millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
Load vector – maximum parameter is obtained only during perpendicular pulling. The shear force of the magnet along the surface is standardly many times smaller (approx. 1/5 of the lifting capacity).
Base massiveness – insufficiently thick steel causes magnetic saturation, causing part of the power to be escaped to the other side.
Material type – the best choice is high-permeability steel. Stainless steels may have worse magnetic properties.
Smoothness – ideal contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
Heat – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, in contrast under parallel forces the load capacity is reduced by as much as 5 times. Additionally, even a minimal clearance between the magnet and the plate decreases the lifting capacity.

Safety rules for work with neodymium magnets

Shattering risk

NdFeB magnets are sintered ceramics, which means they are very brittle. Impact of two magnets will cause them cracking into small pieces.

Heat warning

Standard neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. Damage is permanent.

Hand protection

Protect your hands. Two large magnets will join instantly with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

Mechanical processing

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

Handling guide

Handle magnets consciously. Their immense force can shock even experienced users. Stay alert and do not underestimate their power.

Warning for allergy sufferers

Certain individuals experience a contact allergy to nickel, which is the standard coating for neodymium magnets. Extended handling might lead to skin redness. We strongly advise use safety gloves.

Choking Hazard

These products are not intended for children. Eating several magnets may result in them connecting inside the digestive tract, which constitutes a severe health hazard and necessitates immediate surgery.

Warning for heart patients

Individuals with a heart stimulator must keep an safe separation from magnets. The magnetism can stop the functioning of the life-saving device.

Threat to electronics

Do not bring magnets near a purse, computer, or screen. The magnetic field can irreversibly ruin these devices and wipe information from cards.

Phone sensors

Note: neodymium magnets produce a field that confuses precision electronics. Maintain a separation from your phone, device, and GPS.

Caution! More info about risks in the article: Magnet Safety Guide.

MW 20x5 / N38 - cylindrical magnet

Detailed specification - MW 20x5 / 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 pull force (pull vs gap) - power drop MW 20x5 / N38

Table 2: Sliding hold (vertical surface) MW 20x5 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MW 20x5 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MW 20x5 / N38

Table 5: Thermal stability (stability) - power drop MW 20x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision MW 20x5 / N38

Table 7: Protective zones (implants) - warnings MW 20x5 / N38

Table 8: Collisions (cracking risk) - collision effects MW 20x5 / N38

Table 9: Anti-corrosion coating durability MW 20x5 / N38

Table 10: Electrical data (Flux) MW 20x5 / N38

Table 11: Physics of underwater searching MW 20x5 / N38

1. Shear force

2. Steel thickness impact

3. Power loss vs temp

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

Chemical composition

Environmental data

Magnet pull force

Field Strength

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UMP 94x28 [3xM10] GW F300 GOLD / N38 - search holder

Strengths and weaknesses of rare earth magnets.

Benefits

Limitations

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what affects it?

Magnet lifting force in use – key factors

Safety rules for work with neodymium magnets

Shattering risk

Heat warning

Hand protection

Mechanical processing

Handling guide

Warning for allergy sufferers

Choking Hazard

Warning for heart patients

Threat to electronics

Phone sensors

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - power drop
MW 20x5 / N38

Table 2: Sliding hold (vertical surface)
MW 20x5 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 20x5 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 20x5 / N38

Table 5: Thermal stability (stability) - power drop
MW 20x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 20x5 / N38

Table 7: Protective zones (implants) - warnings
MW 20x5 / N38

Table 8: Collisions (cracking risk) - collision effects
MW 20x5 / N38

Table 9: Anti-corrosion coating durability
MW 20x5 / N38

Table 10: Electrical data (Flux)
MW 20x5 / N38

Table 11: Physics of underwater searching
MW 20x5 / N38