Product available Ships tomorrow

MW 8x20 / 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 010475

GTIN/EAN: 5906301811138

5.00

Diameter Ø

8 mm [±0,1 mm]

Height

20 mm [±0,1 mm]

Weight

7.54 g

Magnetization Direction

→ diametrical

Load capacity

1.30 kg / 12.71 N

Magnetic Induction

607.01 mT / 6070 Gs

Coating

[NiCuNi] Nickel

view parameters »

4.60 ZŁ with VAT / pcs + price for transport

3.74 ZŁ net + 23% VAT / pcs

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Detailed specification - MW 8x20 / N38 - cylindrical magnet

Specification / characteristics - MW 8x20 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010475
GTIN/EAN	5906301811138
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	8 mm [±0,1 mm]
Height	20 mm [±0,1 mm]
Weight	7.54 g
Magnetization Direction	→ diametrical
Load capacity ~ ?	1.30 kg / 12.71 N
Magnetic Induction ~ ?	607.01 mT / 6070 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 8x20 / 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

Engineering analysis of the magnet - technical parameters

The following information constitute the outcome of a engineering analysis. Results were calculated on models for the class Nd₂Fe₁₄B. Operational performance may differ. Treat these data as a preliminary roadmap for designers.

Table 1: Static force (force vs gap) - characteristics
MW 8x20 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	6064 Gs 606.4 mT	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N	low risk
1 mm	4587 Gs 458.7 mT	0.74 kg / 1.64 LBS 743.7 g / 7.3 N	low risk
2 mm	3327 Gs 332.7 mT	0.39 kg / 0.86 LBS 391.4 g / 3.8 N	low risk
3 mm	2388 Gs 238.8 mT	0.20 kg / 0.44 LBS 201.6 g / 2.0 N	low risk
5 mm	1281 Gs 128.1 mT	0.06 kg / 0.13 LBS 58.0 g / 0.6 N	low risk
10 mm	389 Gs 38.9 mT	0.01 kg / 0.01 LBS 5.4 g / 0.1 N	low risk
15 mm	169 Gs 16.9 mT	0.00 kg / 0.00 LBS 1.0 g / 0.0 N	low risk
20 mm	90 Gs 9.0 mT	0.00 kg / 0.00 LBS 0.3 g / 0.0 N	low risk
30 mm	35 Gs 3.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk
50 mm	10 Gs 1.0 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk

Magnetic force weakens sharply with every mm of gap. Keep in mind that even the smallest gap (e.g., dirt, varnish, dust) significantly weakens the grip. Magnets work optimally at the point of direct contact; distance drastically cuts the force. See how flashily the load capacity plummet, when the magnet does not touch tightly to the metal substrate. When planning the assembly, avoid additional spacers.

Table 2: Sliding hold (vertical surface)
MW 8x20 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.26 kg / 0.57 LBS 260.0 g / 2.6 N
1 mm	Stal (~0.2)	0.15 kg / 0.33 LBS 148.0 g / 1.5 N
2 mm	Stal (~0.2)	0.08 kg / 0.17 LBS 78.0 g / 0.8 N
3 mm	Stal (~0.2)	0.04 kg / 0.09 LBS 40.0 g / 0.4 N
5 mm	Stal (~0.2)	0.01 kg / 0.03 LBS 12.0 g / 0.1 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 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 indicates the approximate weight limit required to initiate the downward movement of the magnet down against a upright steel plate (assuming standard friction). The holding force is a function of the distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - vertical pull
MW 8x20 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.39 kg / 0.86 LBS 390.0 g / 3.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.26 kg / 0.57 LBS 260.0 g / 2.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.13 kg / 0.29 LBS 130.0 g / 1.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.65 kg / 1.43 LBS 650.0 g / 6.4 N

When mounting a element on a upright surface (e.g., a car body), it will maintain just approx. 1/5 of its maximum pull force. Gravitational force and a weak degree of grip influence the fact that products move down faster than they pull off. Want to create a wall mount? Consider that the sliding force is significantly lower than the maximum static pull force. On a slippery surface, the element will slip down under a much lighter load. Application of an anti-slip pad can drastically raise the stability.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 8x20 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.13 kg / 0.29 LBS 130.0 g / 1.3 N
1 mm	25%	0.33 kg / 0.72 LBS 325.0 g / 3.2 N
2 mm	50%	0.65 kg / 1.43 LBS 650.0 g / 6.4 N
3 mm	75%	0.98 kg / 2.15 LBS 975.0 g / 9.6 N
5 mm	100%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N
10 mm	100%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N
11 mm	100%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N
12 mm	100%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N

A thin sheet is not enough to focus the full magnetic flux, which wastes potential of the holder. If you install a neodymium to a weak sheet, the field will pass right through and the holding will be smaller. To utilize full efficiency of this magnet's power, you need a suitably thick piece of steel. The saturation effect means that on delicate walls (e.g., appliance housings), the magnet shows lower pull force. We advise picking the steel dimension according to the table below.

Table 5: Thermal resistance (stability) - thermal limit
MW 8x20 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N	OK
40 °C	-2.2%	1.27 kg / 2.80 LBS 1271.4 g / 12.5 N	OK
60 °C	-4.4%	1.24 kg / 2.74 LBS 1242.8 g / 12.2 N	OK
80 °C	-6.6%	1.21 kg / 2.68 LBS 1214.2 g / 11.9 N
100 °C	-28.8%	0.93 kg / 2.04 LBS 925.6 g / 9.1 N

Standard neodymium magnets change their properties strength above the temperature limit. Watch out for overheating – heat can irreversibly destroy this product. With increasing heat, the neodymium's capacity temporarily drops. Avoid using this magnet in hot environments higher than its operating temperature limit. Ignoring the limit will result in irreversible degradation of magnetic properties.

*Technical advisory: Temperature resistance depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (pancake types) may lose charge permanently at lower temperatures than taller cylinders. The danger warning in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 8x20 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	11.40 kg / 25.12 LBS 6 154 Gs	1.71 kg / 3.77 LBS 1709 g / 16.8 N	N/A
1 mm	8.76 kg / 19.31 LBS 10 632 Gs	1.31 kg / 2.90 LBS 1314 g / 12.9 N	7.88 kg / 17.38 LBS ~0 Gs
2 mm	6.52 kg / 14.37 LBS 9 174 Gs	0.98 kg / 2.16 LBS 978 g / 9.6 N	5.87 kg / 12.94 LBS ~0 Gs
3 mm	4.76 kg / 10.49 LBS 7 837 Gs	0.71 kg / 1.57 LBS 714 g / 7.0 N	4.28 kg / 9.44 LBS ~0 Gs
5 mm	2.46 kg / 5.43 LBS 5 637 Gs	0.37 kg / 0.81 LBS 369 g / 3.6 N	2.22 kg / 4.88 LBS ~0 Gs
10 mm	0.51 kg / 1.12 LBS 2 561 Gs	0.08 kg / 0.17 LBS 76 g / 0.7 N	0.46 kg / 1.01 LBS ~0 Gs
20 mm	0.05 kg / 0.10 LBS 778 Gs	0.01 kg / 0.02 LBS 7 g / 0.1 N	0.04 kg / 0.09 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 107 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 69 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 48 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 34 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 25 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 19 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnets attract each other from a wider radius than a neodymium and metal setup. The connection of magnet-to-magnet generates a stronger field and a further horizon of operation. Want to build a strong closure? Apply two magnets instead of a neodymium and a steel. Remember that when connecting a pair of magnets, the collision energy is massive. The levitation 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: Calculations refer to shear force of dual matching magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - warnings
MW 8x20 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.5 cm
Hearing aid	10 Gs (1.0 mT)	5.0 cm
Mechanical watch	20 Gs (2.0 mT)	4.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.0 cm
Remote	50 Gs (5.0 mT)	3.0 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 IT equipment as well as pacemakers. These neodymiums produce a field that prevents correct functioning of digital equipment. Remember: the invisible magnetic field penetrates the body and plastic. Increased vigilance must be exercised by people with cochlear implants and drug dispensers. Also at risk are: mechanical watches, car keys, speakers, and displays. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Collisions (cracking risk) - warning
MW 8x20 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	13.28 km/h (3.69 m/s)	0.05 J
30 mm	22.94 km/h (6.37 m/s)	0.15 J
50 mm	29.61 km/h (8.23 m/s)	0.26 J
100 mm	41.88 km/h (11.63 m/s)	0.51 J

NdFeB products are prone to chipping – a violent impact against metal causes immediate chipping. Control the attraction moment – a neodymium left loose turns into a projectile. Impact energy can destroy the magnet or injury 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 almost guarantees destruction of the magnet. Wear safety glasses when working with large magnets.

Table 9: Coating parameters (durability)
MW 8x20 / 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: Construction data (Flux)
MW 8x20 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	3 457 Mx	34.6 µWb
P_c Coefficient	1.31	High (Stable)

Flux value passing through the pole surface. Essential parameter for generator designers as well as sensors. The P_c coefficient defines the magnet's operating point.

Table 11: Submerged application
MW 8x20 / N38

Environment	Effective steel pull	Effect
Air (land)	1.30 kg	Standard
Water (riverbed)	1.49 kg (+0.19 kg buoyancy gain)	+14.5%

Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

In water, the magnet feels stronger thanks to Archimedes' principle. However, remember the water resistance when pulling the rope quickly.

1. Sliding resistance

*Caution: On a vertical surface, the magnet holds just a fraction of its max power.

2. Efficiency vs thickness

*Thin steel (e.g. 0.5mm PC case) drastically limits the holding force.

3. Thermal stability

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.31

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

Material specification

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: 010475-2026

Measurement Calculator

Magnet pull force

Force in kg

lbs

Magnetic Field

Gauss (Gs)

Induction (T)

Put a figure in just one field to see the conversion in the other fields right away.

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The presented product is a very strong rod magnet, manufactured from durable NdFeB material, which, with dimensions of Ø8x20 mm, guarantees maximum efficiency. The MW 8x20 / N38 component features an accuracy of ±0.1mm and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 1.30 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 12.71 N with a weight of only 7.54 g, this rod is indispensable in electronics and wherever low weight is crucial.

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., 8.1 mm) using epoxy glues. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need even stronger magnets in the same volume (Ø8x20), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

This model is characterized by dimensions Ø8x20 mm, which, at a weight of 7.54 g, makes it an element with high magnetic energy density. The key parameter here is the holding force amounting to approximately 1.30 kg (force ~12.71 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, 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 8 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.

Pros as well as cons of neodymium magnets.

Advantages

Apart from their consistent power, neodymium magnets have these key benefits:

They do not lose strength, even during nearly ten years – the reduction in strength is only ~1% (theoretically),
Neodymium magnets prove to be extremely resistant to demagnetization caused by external interference,
By covering with a smooth coating of silver, the element gains an nice look,
They are known for high magnetic induction at the operating surface, which improves attraction properties,
Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
Thanks to the ability of free forming and customization to specialized solutions, NdFeB magnets can be produced in a variety of forms and dimensions, which amplifies use scope,
Huge importance in modern technologies – they are commonly used in hard drives, brushless drives, medical devices, and multitasking production systems.
Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Cons

Drawbacks and weaknesses of neodymium magnets: tips and applications.

At strong impacts they can break, therefore we recommend 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 power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
We recommend casing - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complex forms.
Health risk resulting from small fragments of magnets can be dangerous, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that small components of these products can disrupt the diagnostic process medical when they are in the body.
With budget limitations the cost of neodymium magnets can be a barrier,

Pull force analysis

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

Holding force of 1.30 kg is a result of laboratory testing performed under standard conditions:

using a sheet made of mild steel, acting as a circuit closing element
with a cross-section of at least 10 mm
characterized by lack of roughness
without any clearance between the magnet and steel
under perpendicular application of breakaway force (90-degree angle)
in neutral thermal conditions

Determinants of practical lifting force of a magnet

Please note that the application force may be lower influenced by elements below, in order of importance:

Clearance – the presence of foreign body (rust, dirt, gap) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
Loading method – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
Steel type – low-carbon steel attracts best. Higher carbon content lower magnetic properties and holding force.
Smoothness – full contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
Temperature – temperature increase causes a temporary drop of induction. Check the maximum operating temperature for a given model.

Lifting capacity was assessed with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, however under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate decreases the lifting capacity.

Precautions when working with NdFeB magnets

Demagnetization risk

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

Risk of cracking

Beware of splinters. Magnets can explode upon uncontrolled impact, launching shards into the air. Eye protection is mandatory.

Cards and drives

Intense magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Keep a distance of at least 10 cm.

Respect the power

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

Allergy Warning

Certain individuals have a hypersensitivity to Ni, which is the common plating for NdFeB magnets. Extended handling can result in a rash. It is best to use safety gloves.

Machining danger

Mechanical processing of NdFeB material carries a risk of fire risk. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Pacemakers

Health Alert: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.

Crushing risk

Protect your hands. Two powerful magnets will snap together instantly with a force of massive weight, crushing everything in their path. Exercise extreme caution!

Impact on smartphones

An intense magnetic field negatively affects the functioning of compasses in smartphones and navigation systems. Keep magnets near a device to avoid damaging the sensors.

Keep away from children

Neodymium magnets are not toys. Accidental ingestion of multiple magnets can lead to them attracting across intestines, which constitutes a critical condition and necessitates immediate surgery.

Danger! Need more info? Read our article: Are neodymium magnets dangerous?

MW 8x20 / N38 - cylindrical magnet

Detailed specification - MW 8x20 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the magnet - technical parameters

Table 1: Static force (force vs gap) - characteristics MW 8x20 / N38

Table 2: Sliding hold (vertical surface) MW 8x20 / N38

Table 3: Wall mounting (sliding) - vertical pull MW 8x20 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MW 8x20 / N38

Table 5: Thermal resistance (stability) - thermal limit MW 8x20 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MW 8x20 / N38

Table 7: Protective zones (electronics) - warnings MW 8x20 / N38

Table 8: Collisions (cracking risk) - warning MW 8x20 / N38

Table 9: Coating parameters (durability) MW 8x20 / N38

Table 10: Construction data (Flux) MW 8x20 / N38

Table 11: Submerged application MW 8x20 / N38

1. Sliding resistance

2. Efficiency vs thickness

3. Thermal stability

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

Material specification

Environmental data

Magnet pull force

Magnetic Field

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Pros as well as cons of neodymium magnets.

Advantages

Cons

Pull force analysis

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

Determinants of practical lifting force of a magnet

Precautions when working with NdFeB magnets

Demagnetization risk

Risk of cracking

Cards and drives

Respect the power

Allergy Warning

Machining danger

Pacemakers

Crushing risk

Impact on smartphones

Keep away from children

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - characteristics
MW 8x20 / N38

Table 2: Sliding hold (vertical surface)
MW 8x20 / N38

Table 3: Wall mounting (sliding) - vertical pull
MW 8x20 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 8x20 / N38

Table 5: Thermal resistance (stability) - thermal limit
MW 8x20 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 8x20 / N38

Table 7: Protective zones (electronics) - warnings
MW 8x20 / N38

Table 8: Collisions (cracking risk) - warning
MW 8x20 / N38

Table 9: Coating parameters (durability)
MW 8x20 / N38

Table 10: Construction data (Flux)
MW 8x20 / N38

Table 11: Submerged application
MW 8x20 / N38