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MW 8x20 / N38 - cylindrical magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN
Rating: 5

cylindrical magnet

Catalog no 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

see technical specifications »

4.60 ZŁ with VAT / pcs + price for transport

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Technical specification of the product - 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

Technical analysis of the assembly - data

The following data represent the direct effect of a engineering simulation. Results were calculated on models for the class Nd₂Fe₁₄B. Real-world performance may differ. Use these data as a supplementary guide during assembly planning.

Table 1: Static force (pull vs gap) - interaction chart
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	weak grip
1 mm	4587 Gs 458.7 mT	0.74 kg / 1.64 LBS 743.7 g / 7.3 N	weak grip
2 mm	3327 Gs 332.7 mT	0.39 kg / 0.86 LBS 391.4 g / 3.8 N	weak grip
3 mm	2388 Gs 238.8 mT	0.20 kg / 0.44 LBS 201.6 g / 2.0 N	weak grip
5 mm	1281 Gs 128.1 mT	0.06 kg / 0.13 LBS 58.0 g / 0.6 N	weak grip
10 mm	389 Gs 38.9 mT	0.01 kg / 0.01 LBS 5.4 g / 0.1 N	weak grip
15 mm	169 Gs 16.9 mT	0.00 kg / 0.00 LBS 1.0 g / 0.0 N	weak grip
20 mm	90 Gs 9.0 mT	0.00 kg / 0.00 LBS 0.3 g / 0.0 N	weak grip
30 mm	35 Gs 3.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip
50 mm	10 Gs 1.0 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip

Pulling power decreases significantly with every mm of spacing. Remember that every additional insulation layer (e.g., dirt, paint, veneer) significantly weakens the grip. Neodymiums operate strongest at the point of direct contact; gap kills the power. Observe how rapidly the pull force fall, when the magnet does not adhere directly to the metal substrate. When planning the mounting, eliminate additional spacers.

Table 2: Sliding force (wall)
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 defines the estimated shear load required to cause the sliding of the magnet vertically on a vertical steel wall (assuming typical friction coefficient). This parameter is relative to the distance between the magnet and the surface.

Table 3: Vertical assembly (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 hanging a element on a vertical plane (e.g., a fridge), it will only hold only approx. 20%-30% of nominal attraction strength. Gravity as well as a weak degree of grip influence the fact that products slip easier than they detach. Designing a hanger? Note that the shear force is noticeably lower than the maximum static pull force. On a painted metal, the holder will give way down under a much lighter load. Application of an anti-slip pad can significantly improve the result.

Table 4: Material efficiency (saturation) - power losses
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 too thin steel is not enough to take in the entire magnetic field, which wastes potential of the holder. Should you mount a strong magnet to a thin surface, the magnetism will pass right through and the holding will be smaller. To achieve the maximum of this magnet's potential, you require a sufficiently solid piece of metal. The material oversaturation causes that on delicate walls (e.g., car bodies), the magnet holds weaker. We suggest choosing the steel dimension from these parameters.

Table 5: Working in heat (material behavior) - resistance threshold
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

Ordinary NdFeB products change their properties power above the temperature limit. Protect against heat – high temperature can irreversibly demagnetize this product. As the temperature rises, the neodymium's capacity temporarily decreases. Refrain from using this product close to heaters higher than its working range. Exceeding the critical threshold will result in destruction of magnetism.

*Engineering note: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low permeance coefficient) risk losing magnetic properties at lower temperatures than long magnets. The danger warning in the table indicates a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 8x20 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral 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 interact from a significantly greater distance than a magnet and steel setup. Such a system of magnet-to-magnet produces a massive flux and a wider radius of performance. Want to build a powerful holder? Utilize two neodymiums instead of a neodymium and a steel. Remember that when connecting a pair of magnets, the impact force is huge. The levitation is slightly lower than the connection force, but still impressive.
*Flux density in repulsion mode drops to ~0 Gs at the geometric center of the gap (due to field cancellation).
Attention: Calculations refer to friction force of a pair of matching magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (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 is a serious hazard to IT equipment as well as medical implants. These magnets produce a field that prevents correct functioning of digital equipment. Remember: the unseen radiation passes through tissues and glass. Increased vigilance must be taken by people with hearing aids and drug dispensers. Influence will be felt by: mechanical watches, car keys, membranes, and displays. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (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

Neodymium magnets are prone to chipping – a violent impact against metal risks their cracking. Watch the impact speed – a neodymium left loose speeds with massive force. Impact energy can destroy the magnet or dangerous crushing to skin. Hold the magnet firmly during mounting so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear eye protection when working with large magnets.

Table 9: Corrosion resistance
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)

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

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

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

Total magnetic flux passing through the pole surface. Essential parameter when building generators as well as sensors. P_c value determines the working geometry.

Table 11: Underwater work (magnet fishing)
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%

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

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Wall mount (shear)

*Note: On a vertical surface, the magnet holds only ~20% of its max power.

2. Steel saturation

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

3. Temperature resistance

*For N38 material, 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 and environmental data

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%

Sustainability

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

Magnet Unit Converter

Force (pull)

Force in kg

Force (N)

Pounds (lbs)

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Simply complete a single box, and the calculator fill in the rest instantly.

MW 6x6 / N38 - cylindrical magnet

0.677 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

BM 650x180x70 [4x M8] - magnetic beam

6131.43 ZŁ brutto / pcs

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AM klisza magnetyczna 50 x 50 mm - magnetic accessories

24.60 ZŁ brutto / pcs

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BM 550x180x70 [4x M8] - magnetic beam

5708.18 ZŁ brutto / pcs

The presented product is an incredibly powerful rod magnet, produced from modern NdFeB material, which, with dimensions of Ø8x20 mm, guarantees optimal power. The MW 8x20 / N38 model boasts an accuracy of ±0.1mm and professional 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. Furthermore, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

It finds application in DIY projects, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 12.71 N with a weight of only 7.54 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.

Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 8.1 mm) using two-component epoxy glues. To ensure stability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.

Grade N38 is the most popular standard for professional neodymium magnets, offering a great economic balance and high resistance to demagnetization. If you need the strongest 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 warehouse.

The presented product is a neodymium magnet with precisely defined parameters: diameter 8 mm and height 20 mm. The value of 12.71 N means that the magnet is capable of holding a weight many times exceeding its own mass of 7.54 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.

Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 8 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 diametrically if your project requires it.

Strengths as well as weaknesses of neodymium magnets.

Benefits

Besides their immense magnetic power, neodymium magnets offer the following advantages:

Their power is durable, and after around 10 years it drops only by ~1% (theoretically),
They are extremely resistant to demagnetization induced by external field influence,
In other words, due to the glossy layer of silver, the element is aesthetically pleasing,
The surface of neodymium magnets generates a concentrated magnetic field – this is a distinguishing feature,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
Thanks to the possibility of free molding and customization to unique needs, neodymium magnets can be produced in a wide range of shapes and sizes, which amplifies use scope,
Significant place in modern industrial fields – they serve a role in magnetic memories, electromotive mechanisms, diagnostic systems, as well as other advanced devices.
Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Limitations

Cons of neodymium magnets and ways of using them

They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
Limited ability of creating nuts in the magnet and complicated forms - recommended is cover - magnetic holder.
Possible danger related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that small components of these magnets are able to be problematic in diagnostics medical in case of swallowing.
With mass production the cost of neodymium magnets is a challenge,

Holding force characteristics

Maximum magnetic pulling force – what it depends on?

The load parameter shown represents the peak performance, obtained under optimal environment, meaning:

with the use of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
whose transverse dimension equals approx. 10 mm
with a surface perfectly flat
with direct contact (without paint)
for force applied at a right angle (in the magnet axis)
at ambient temperature room level

Magnet lifting force in use – key factors

Real force is influenced by specific conditions, including (from most important):

Clearance – the presence of any layer (paint, dirt, air) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
Base massiveness – insufficiently thick sheet causes magnetic saturation, causing part of the flux to be escaped to the other side.
Steel type – mild steel gives the best results. Alloy steels reduce magnetic properties and holding force.
Surface finish – full contact is possible only on polished steel. Any scratches and bumps create air cushions, reducing force.
Thermal environment – temperature increase results in weakening of induction. Check the maximum operating temperature for a given model.

Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under perpendicular forces, however under parallel forces the lifting capacity is smaller. Additionally, even a small distance between the magnet and the plate reduces the holding force.

H&S for magnets

Heat sensitivity

Standard neodymium magnets (N-type) lose power when the temperature surpasses 80°C. This process is irreversible.

Warning for allergy sufferers

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If skin irritation occurs, cease handling magnets and use protective gear.

Pinching danger

Watch your fingers. Two large magnets will join immediately with a force of massive weight, destroying anything in their path. Be careful!

Compass and GPS

GPS units and mobile phones are extremely susceptible to magnetic fields. Direct contact with a strong magnet can decalibrate the internal compass in your phone.

Medical interference

Medical warning: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.

Handling guide

Handle with care. Neodymium magnets act from a long distance and snap with huge force, often quicker than you can move away.

No play value

NdFeB magnets are not intended for children. Accidental ingestion of multiple magnets may result in them pinching intestinal walls, which constitutes a direct threat to life and requires urgent medical intervention.

Material brittleness

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

Magnetic media

Equipment safety: Neodymium magnets can damage data carriers and sensitive devices (pacemakers, medical aids, timepieces).

Do not drill into magnets

Powder created during cutting of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Safety First! Want to know more? Read our article: Are neodymium magnets dangerous?

MW 8x20 / N38 - cylindrical magnet

Technical specification of the product - MW 8x20 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the assembly - data

Table 1: Static force (pull vs gap) - interaction chart MW 8x20 / N38

Table 2: Sliding force (wall) MW 8x20 / N38

Table 3: Vertical assembly (sliding) - vertical pull MW 8x20 / N38

Table 4: Material efficiency (saturation) - power losses MW 8x20 / N38

Table 5: Working in heat (material behavior) - resistance threshold MW 8x20 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system MW 8x20 / N38

Table 7: Safety (HSE) (electronics) - warnings MW 8x20 / N38

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

Table 9: Corrosion resistance MW 8x20 / N38

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

Table 11: Underwater work (magnet fishing) MW 8x20 / N38

1. Wall mount (shear)

2. Steel saturation

3. Temperature resistance

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

Material specification

Sustainability

Force (pull)

Field Strength

See also products

MW 6x6 / N38 - cylindrical magnet

BM 650x180x70 [4x M8] - magnetic beam

AM klisza magnetyczna 50 x 50 mm - magnetic accessories

BM 550x180x70 [4x M8] - magnetic beam

Strengths as well as weaknesses of neodymium magnets.

Benefits

Limitations

Holding force characteristics

Maximum magnetic pulling force – what it depends on?

Magnet lifting force in use – key factors

H&S for magnets

Heat sensitivity

Warning for allergy sufferers

Pinching danger

Compass and GPS

Medical interference

Handling guide

No play value

Material brittleness

Magnetic media

Do not drill into magnets

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - interaction chart
MW 8x20 / N38

Table 2: Sliding force (wall)
MW 8x20 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MW 8x20 / N38

Table 4: Material efficiency (saturation) - power losses
MW 8x20 / N38

Table 5: Working in heat (material behavior) - resistance threshold
MW 8x20 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 8x20 / N38

Table 7: Safety (HSE) (electronics) - warnings
MW 8x20 / N38

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

Table 9: Corrosion resistance
MW 8x20 / N38

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

Table 11: Underwater work (magnet fishing)
MW 8x20 / N38