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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 parameters »

5.56 ZŁ with VAT / pcs + price for transport

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Technical - 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

Physical analysis of the magnet - data

Presented data represent the outcome of a physical analysis. Results are based on models for the class Nd₂Fe₁₄B. Operational conditions may differ. Please consider these data as a preliminary roadmap during assembly planning.

Table 1: Static pull force (pull vs distance) - interaction chart
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

Pulling power drops drastically with every mm of distance. Remember that even a microscopic distance (e.g., contamination, paint, rust) strongly weakens the grip. Neodymiums operate strongest at the point of direct contact; distance nullifies the force. Observe how flashily the parameters plummet, when the product does not touch flatly to the steel surface. When calculating the arrangement, discard unnecessary gaps.

Table 2: Slippage capacity (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

The table below indicates the approximate shear load required to start the sliding of the magnet downwards on a upright metal surface (assuming typical friction coefficient). This parameter is a function of the separation distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
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 mounting a magnet on a vertical plane (e.g., a board), it will maintain just approx. 1/5 of its maximum pull force. Gravity and a low friction coefficient influence the fact that holders move down easier than they pull off. Planning a vertical fastening? Note that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the holder will slide down under a significantly smaller load. Utilizing a rubberized coating can drastically increase the grip.

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 sheet is unable to take in the full magnetic flux, which weakens actual performance of the magnet. If you attach a powerful product to a weak sheet, the magnetism will penetrate right through and the attraction force will be weaker. To utilize full efficiency of this neodymium's power, you require a sufficiently solid element of metal. The saturation effect causes that on thin elements (e.g., appliance housings), the product holds weaker. We suggest choosing the steel cross-section according to the table below.

Table 5: Thermal stability (stability) - resistance threshold
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

Standard neodymium magnets irreversibly lose strength past the thermal threshold. Protect against heat – excessive heat can irreversibly demagnetize this magnet. With every degree above norm, the magnet's capacity momentarily drops. Refrain from using this magnet close to ovens exceeding its safe range. Exceeding the critical threshold will lead to permanent loss of magnetic properties.

*Important note: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (low permeance coefficient) are more susceptible to demagnetization at lower temperatures than taller cylinders. Warning indicator in the table points to permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - field range
MW 20x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding 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 strong neodymiums attract each other from a significantly greater distance than a magnet and steel setup. Such a system of magnet-to-magnet creates a more powerful interaction and a further horizon of operation. Planning to create a solid fastener? Utilize two neodymiums instead of a neodymium and a striker plate. Remember that when attracting two neodymiums, the collision energy is extreme. The levitation is marginally weaker than the connection force, but still significant.
*The magnetic induction in repulsion mode reaches ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Important: Results show sliding force of a pair of identical magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - precautionary measures
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
Mechanical watch	20 Gs (2.0 mT)	5.5 cm
Mobile device	40 Gs (4.0 mT)	4.0 cm
Car key	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

A strong magnetic field poses a real danger to electronics as well as medical implants. These NdFeB products generate a field that prevents correct functioning of sensitive medical devices. Be aware: the invisible magnetic field penetrates the body and housings. Increased vigilance must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: automatic timepieces, remotes, membranes, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - warning
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

Magnetic elements are prone to chipping – a collision with steel causes immediate chipping. Watch the impact speed – a neodymium left loose turns into a projectile. Striking energy can trigger coating fragments or painful pinches to fingers. Always hold the magnet during mounting so it doesn't slam with momentum against the metal. A collision at high speed almost guarantees destruction of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Corrosion resistance
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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (P_c)
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 pole surface. Key data in coil applications as well as sensors. The P_c coefficient determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
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%

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

The magnetic field penetrates through water without any losses. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Sliding resistance

*Note: On a vertical wall, the magnet holds just a fraction of its perpendicular strength.

2. Efficiency vs thickness

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

3. Power loss vs temp

*For N38 grade, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.35

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 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%

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: 010044-2026

Measurement Calculator

Pulling force

Kilograms (kg)

Newtons (N)

Pounds (lbs)

Field Strength

Gauss (Gs)

Induction (T)

Insert a value in one of the inputs, and the remaining fields change in real-time.

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The presented product is an exceptionally strong cylindrical magnet, composed of modern NdFeB material, which, at dimensions of Ø20x5 mm, guarantees optimal power. This specific item features an accuracy of ±0.1mm and industrial build quality, making it an excellent solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 6.93 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

This model is ideal for building generators, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 67.95 N with a weight of only 11.78 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.

Since our magnets have a tolerance of ±0.1mm, the best method is to glue them into holes with a slightly larger diameter (e.g., 20.1 mm) using epoxy glues. 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 90% 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 (Ø20x5), 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 Ø20x5 mm, which, at a weight of 11.78 g, makes it an element with high magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 6.93 kg (force ~67.95 N), which, with such defined dimensions, proves the high power of the NdFeB material. 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 20 mm. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized through the diameter if your project requires it.

Strengths and weaknesses of rare earth magnets.

Advantages

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

They have stable power, and over around ten years their performance decreases symbolically – ~1% (according to theory),
They are resistant to demagnetization induced by external magnetic fields,
The use of an metallic coating of noble metals (nickel, gold, silver) causes the element to look better,
Magnets are characterized by very high magnetic induction on the surface,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Due to the potential of free shaping and adaptation to specialized needs, NdFeB magnets can be manufactured in a variety of geometric configurations, which expands the range of possible applications,
Versatile presence in modern technologies – they find application in magnetic memories, drive modules, medical devices, also technologically advanced constructions.
Thanks to their power density, small magnets offer high operating force, with minimal size,

Weaknesses

Disadvantages of neodymium magnets:

At strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 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 prevent oxidation and corrosion.
Limited possibility of producing nuts in the magnet and complex forms - preferred is cover - mounting mechanism.
Possible danger related to microscopic parts of magnets can be dangerous, if swallowed, which is particularly important in the context of child health protection. Additionally, small elements of these products can be problematic in diagnostics medical after entering the body.
Due to expensive raw materials, their price is higher than average,

Pull force analysis

Detachment force of the magnet in optimal conditions – what affects it?

Information about lifting capacity is the result of a measurement for the most favorable conditions, assuming:

using a sheet made of mild steel, functioning as a ideal flux conductor
possessing a massiveness of min. 10 mm to ensure full flux closure
with an ground contact surface
with zero gap (no paint)
for force acting at a right angle (in the magnet axis)
in neutral thermal conditions

Magnet lifting force in use – key factors

In practice, the actual lifting capacity depends on several key aspects, ranked from most significant:

Air gap (betwixt the magnet and the metal), because even a tiny clearance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to paint, rust or dirt).
Direction of force – highest force is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
Plate material – mild steel gives the best results. Higher carbon content lower magnetic properties and lifting capacity.
Plate texture – ground elements ensure maximum contact, which increases force. Uneven metal weaken the grip.
Temperature influence – high temperature weakens pulling force. Too high temperature can permanently demagnetize the magnet.

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the lifting capacity is smaller. Moreover, even a small distance between the magnet’s surface and the plate reduces the holding force.

H&S for magnets

Do not give to children

Adult use only. Small elements can be swallowed, causing serious injuries. Keep out of reach of children and animals.

Heat warning

Keep cool. Neodymium magnets are sensitive to heat. If you need resistance above 80°C, look for special high-temperature series (H, SH, UH).

Phone sensors

A powerful magnetic field negatively affects the operation of compasses in smartphones and navigation systems. Maintain magnets close to a smartphone to avoid damaging the sensors.

Machining danger

Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this risks ignition.

Protect data

Avoid bringing magnets near a wallet, computer, or TV. The magnetism can irreversibly ruin these devices and wipe information from cards.

Life threat

Patients with a ICD should keep an absolute distance from magnets. The magnetism can disrupt the functioning of the life-saving device.

Handling rules

Handle magnets with awareness. Their powerful strength can surprise even experienced users. Be vigilant and respect their power.

Allergic reactions

It is widely known that nickel (standard magnet coating) is a strong allergen. If you have an allergy, prevent direct skin contact or choose encased magnets.

Bone fractures

Large magnets can crush fingers in a fraction of a second. Under no circumstances put your hand between two strong magnets.

Shattering risk

Beware of splinters. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. Wear goggles.

Danger! Need more info? Check our post: Are neodymium magnets dangerous?

MW 20x5 / N38 - cylindrical magnet

Technical - MW 20x5 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the magnet - data

Table 1: Static pull force (pull vs distance) - interaction chart MW 20x5 / N38

Table 2: Slippage capacity (vertical surface) MW 20x5 / N38

Table 3: Vertical assembly (shearing) - vertical pull MW 20x5 / N38

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

Table 5: Thermal stability (stability) - resistance threshold MW 20x5 / N38

Table 6: Two magnets (repulsion) - field range MW 20x5 / N38

Table 7: Safety (HSE) (implants) - precautionary measures MW 20x5 / N38

Table 8: Impact energy (kinetic energy) - warning MW 20x5 / N38

Table 9: Corrosion resistance MW 20x5 / N38

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

Table 11: Underwater work (magnet fishing) MW 20x5 / N38

1. Sliding resistance

2. Efficiency vs thickness

3. Power loss vs temp

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

Elemental analysis

Ecology and recycling (GPSR)

Pulling force

Field Strength

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Strengths and weaknesses of rare earth magnets.

Advantages

Weaknesses

Pull force analysis

Detachment force of the magnet in optimal conditions – what affects it?

Magnet lifting force in use – key factors

H&S for magnets

Do not give to children

Heat warning

Phone sensors

Machining danger

Protect data

Life threat

Handling rules

Allergic reactions

Bone fractures

Shattering risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - interaction chart
MW 20x5 / N38

Table 2: Slippage capacity (vertical surface)
MW 20x5 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MW 20x5 / N38

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

Table 5: Thermal stability (stability) - resistance threshold
MW 20x5 / N38

Table 6: Two magnets (repulsion) - field range
MW 20x5 / N38

Table 7: Safety (HSE) (implants) - precautionary measures
MW 20x5 / N38

Table 8: Impact energy (kinetic energy) - warning
MW 20x5 / N38

Table 9: Corrosion resistance
MW 20x5 / N38

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

Table 11: Underwater work (magnet fishing)
MW 20x5 / N38