Product available Ships tomorrow

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

cylindrical magnet

Catalog no 010475

GTIN/EAN: 5906301811138

5.00

Load capacity 1.30 kg / 12.75 N Magnetic Induction 607.01 mT / 6070 Gs

Diameter Ø: 8 mm [±0,1 mm]
Height: 20 mm [±0,1 mm]
Weight: 7.54 g
Magnetization Direction: → diametrical
Coating: [NiCuNi] Nickel

technical parameters »

4.60 zł with VAT / pcs + price for transport

3.74 zł net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

3.74 ZŁ

4.60 ZŁ

price from 200 pcs

3.52 ZŁ

4.32 ZŁ

price from 700 pcs

3.29 ZŁ

4.05 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Can't decide what to choose?

Contact us by phone +48 22 499 98 98 alternatively get in touch using inquiry form the contact section.
Specifications along with structure of magnets can be verified on our modular calculator.

Orders placed before 14:00 will be shipped the same business day.

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 / 12.75 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 modeling of the product - data

These information are the direct effect of a engineering calculation. Values rely on models for the material Nd₂Fe₁₄B. Operational performance might slightly differ. Please consider these calculations as a reference point when designing systems.

Table 1: Static force (force vs distance) - 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 pounds 1300.0 g / 12.8 N	safe
1 mm	4587 Gs 458.7 mT	0.74 kg / 1.64 pounds 743.7 g / 7.3 N	safe
2 mm	3327 Gs 332.7 mT	0.39 kg / 0.86 pounds 391.4 g / 3.8 N	safe
3 mm	2388 Gs 238.8 mT	0.20 kg / 0.44 pounds 201.6 g / 2.0 N	safe
5 mm	1281 Gs 128.1 mT	0.06 kg / 0.13 pounds 58.0 g / 0.6 N	safe
10 mm	389 Gs 38.9 mT	0.01 kg / 0.01 pounds 5.4 g / 0.1 N	safe
15 mm	169 Gs 16.9 mT	0.00 kg / 0.00 pounds 1.0 g / 0.0 N	safe
20 mm	90 Gs 9.0 mT	0.00 kg / 0.00 pounds 0.3 g / 0.0 N	safe
30 mm	35 Gs 3.5 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	safe
50 mm	10 Gs 1.0 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	safe

Magnetic force drops drastically per each millimeter of gap. Keep in mind that even a very thin break (e.g., dirt, varnish, rust) significantly diminishes the holding power. Magnetic products hold strongest at the point of direct contact; gap kills the power. Notice how quickly the load capacity drop, when the product does not adhere directly to the metal substrate. When designing the assembly, discard unnecessary gaps.

Table 2: Sliding force (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 pounds 260.0 g / 2.6 N
1 mm	Stal (~0.2)	0.15 kg / 0.33 pounds 148.0 g / 1.5 N
2 mm	Stal (~0.2)	0.08 kg / 0.17 pounds 78.0 g / 0.8 N
3 mm	Stal (~0.2)	0.04 kg / 0.09 pounds 40.0 g / 0.4 N
5 mm	Stal (~0.2)	0.01 kg / 0.03 pounds 12.0 g / 0.1 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

The following data indicates the approximate force needed to cause the downward movement of the magnet vertically on a upright steel wall (assuming typical friction coefficient). The holding force depends on the air gap between the magnet and the metal.

Table 3: Vertical assembly (shearing) - 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 pounds 390.0 g / 3.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.26 kg / 0.57 pounds 260.0 g / 2.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.13 kg / 0.29 pounds 130.0 g / 1.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.65 kg / 1.43 pounds 650.0 g / 6.4 N

When mounting a holder on a vertical wall (e.g., a fridge), it will maintain just about 20%-30% of nominal attraction strength. Gravity and a weak degree of grip mean that products slide down easier than they pull off. Want to create a vertical fastening? Note that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the element will give way down under a significantly smaller weight. Utilizing a rubberized coating can significantly raise the stability.

Table 4: Steel thickness (substrate influence) - 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 pounds 130.0 g / 1.3 N
1 mm	25%	0.33 kg / 0.72 pounds 325.0 g / 3.2 N
2 mm	50%	0.65 kg / 1.43 pounds 650.0 g / 6.4 N
3 mm	75%	0.98 kg / 2.15 pounds 975.0 g / 9.6 N
5 mm	100%	1.30 kg / 2.87 pounds 1300.0 g / 12.8 N
10 mm	100%	1.30 kg / 2.87 pounds 1300.0 g / 12.8 N
11 mm	100%	1.30 kg / 2.87 pounds 1300.0 g / 12.8 N
12 mm	100%	1.30 kg / 2.87 pounds 1300.0 g / 12.8 N

A thin sheet is incapable of conduct the entire magnetic field, which squanders power of the holder. Should you attach a powerful product to a weak sheet, the magnetism will penetrate right through and the holding will be smaller. To utilize full efficiency of this neodymium's potential, you need a suitably thick element of metal. The saturation effect causes that on thin elements (e.g., appliance housings), the holder works worse. We suggest choosing the steel thickness based on the following data.

Table 5: Thermal stability (material behavior) - 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 pounds 1300.0 g / 12.8 N	OK
40 °C	-2.2%	1.27 kg / 2.80 pounds 1271.4 g / 12.5 N	OK
60 °C	-4.4%	1.24 kg / 2.74 pounds 1242.8 g / 12.2 N	OK
80 °C	-6.6%	1.21 kg / 2.68 pounds 1214.2 g / 11.9 N
100 °C	-28.8%	0.93 kg / 2.04 pounds 925.6 g / 9.1 N

Classic neodymiums lose parameters after exceeding the maximum temperature. Protect against heat – high temperature can permanently demagnetize this magnet. As the temperature rises, the neodymium's force momentarily drops. Avoid using this product close to heaters higher than its safe range. Ignoring the limit will cause destruction of magnetic properties.

*Important note: Temperature resistance is determined by both grade, but also on the magnet's shape. Thin magnets (pancake types) risk losing magnetic properties at lower temperatures compared to rod magnets. Warning indicator in the table signals a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field range
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 pounds 6 154 Gs	1.71 kg / 3.77 pounds 1709 g / 16.8 N	N/A
1 mm	8.76 kg / 19.31 pounds 10 632 Gs	1.31 kg / 2.90 pounds 1314 g / 12.9 N	7.88 kg / 17.38 pounds ~0 Gs
2 mm	6.52 kg / 14.37 pounds 9 174 Gs	0.98 kg / 2.16 pounds 978 g / 9.6 N	5.87 kg / 12.94 pounds ~0 Gs
3 mm	4.76 kg / 10.49 pounds 7 837 Gs	0.71 kg / 1.57 pounds 714 g / 7.0 N	4.28 kg / 9.44 pounds ~0 Gs
5 mm	2.46 kg / 5.43 pounds 5 637 Gs	0.37 kg / 0.81 pounds 369 g / 3.6 N	2.22 kg / 4.88 pounds ~0 Gs
10 mm	0.51 kg / 1.12 pounds 2 561 Gs	0.08 kg / 0.17 pounds 76 g / 0.7 N	0.46 kg / 1.01 pounds ~0 Gs
20 mm	0.05 kg / 0.10 pounds 778 Gs	0.01 kg / 0.02 pounds 7 g / 0.1 N	0.04 kg / 0.09 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 107 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.00 pounds 69 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
70 mm	0.00 kg / 0.00 pounds 48 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.00 pounds 34 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.00 pounds 25 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 19 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnets attract each other from a significantly greater distance than a neodymium and metal setup. The setup of two magnets generates a stronger field and a further horizon of action. Designing a powerful holder? Use a pair of magnets instead of one magnet and a striker plate. Exercise caution that when attracting two neodymiums, the impact force is huge. The levitation is a bit weaker than the attraction, but still significant.
*Flux density for N-N configuration drops to ~0 Gs in the exact middle between the magnets (due to field cancellation).
Attention: Results refer to sliding force of a pair of matching magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (electronics) - precautionary measures
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
Timepiece	20 Gs (2.0 mT)	4.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.0 cm
Car key	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

Powerful magnet radiation poses a real danger to electronics and pacemakers. These NdFeB products produce a flux that disrupts operation of sensitive medical devices. Remember: the unseen radiation penetrates the body and housings. Increased vigilance must be exercised by people with cochlear implants and drug dispensers. Influence will be felt by: mechanical watches, car keys, membranes, and displays. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - warning
MW 8x20 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	8.56 km/h (2.38 m/s)	0.02 J
30 mm	8.60 km/h (2.39 m/s)	0.02 J
50 mm	8.60 km/h (2.39 m/s)	0.02 J
100 mm	8.60 km/h (2.39 m/s)	0.02 J

Neodymium magnets are delicate – a collision with steel causes immediate chipping. Control the attraction moment – a neodymium left loose becomes dangerous. Striking energy can trigger coating fragments or painful pinches to fingers. Hold the magnet firmly during installation so it doesn't hit violently against the steel surface. A collision at high speed ends with a crack of the neodymium. Wear eye protection when playing with powerful specimens.

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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical 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)

Total magnetic flux emitted by the magnet pole. Essential parameter when building generators and motors. The P_c coefficient defines the magnet's operating point.

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

Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.

1. Vertical hold

*Warning: On a vertical surface, the magnet retains only ~20% of its perpendicular strength.

2. Steel saturation

*Thin metal sheet (e.g. computer case) drastically weakens the holding force.

3. Heat tolerance

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

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

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

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%

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

Measurement Calculator

Magnet pull force

Pounds (lbs)

Field Strength

Induction (Gs)

Induction (T)

Insert data into a field, and all other values change on the fly.

Other offers

Product available Ships tomorrow

KM HF - 22 kg - magnetic bracket

29.52 zł brutto / pcs

Product available Ships tomorrow

MP 10x4.3x4 / N38 - ring magnet

1.045 zł brutto / pcs

Product available Ships tomorrow

UMGZ 60x30x15 [M10] GZ / N38 - magnetic holder external thread

102.95 zł brutto / pcs

Product available Ships tomorrow

MP 20x8x5 / N38 - ring magnet

3.80 zł brutto / pcs

The offered product is a very strong rod magnet, produced from advanced NdFeB material, which, with dimensions of Ø8x20 mm, guarantees the highest energy density. This specific item boasts high dimensional repeatability and professional build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 1.30 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 12.75 N with a weight of only 7.54 g, this rod is indispensable in miniature devices and wherever every gram matters.

Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure long-term durability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability 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 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 warehouse.

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 lifting capacity amounting to approximately 1.30 kg (force ~12.75 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 20 mm), which means that the N and S poles are located on the flat, circular surfaces. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized diametrically if your project requires it.

Strengths as well as weaknesses of rare earth magnets.

Advantages

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

They retain full power for nearly ten years – the loss is just ~1% (based on simulations),
They retain their magnetic properties even under close interference source,
In other words, due to the glossy finish of gold, the element is aesthetically pleasing,
The surface of neodymium magnets generates a concentrated magnetic field – this is a distinguishing feature,
Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures approaching 230°C and above...
Thanks to modularity in constructing and the capacity to modify to client solutions,
Fundamental importance in electronics industry – they are commonly used in mass storage devices, brushless drives, medical devices, also modern systems.
Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Limitations

What to avoid - cons of neodymium magnets: weaknesses and usage proposals

To avoid cracks under impact, we recommend using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
We suggest casing - magnetic mount, due to difficulties in producing threads inside the magnet and complicated forms.
Possible danger related to microscopic parts of magnets are risky, if swallowed, which gains importance in the context of child safety. Furthermore, small elements of these products can disrupt the diagnostic process medical when they are in the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

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

The declared magnet strength refers to the limit force, recorded under laboratory conditions, meaning:

with the application of a sheet made of low-carbon steel, ensuring maximum field concentration
possessing a thickness of min. 10 mm to avoid saturation
characterized by smoothness
without any clearance between the magnet and steel
for force applied at a right angle (pull-off, not shear)
in neutral thermal conditions

Key elements affecting lifting force

In real-world applications, the actual holding force is determined by a number of factors, ranked from most significant:

Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
Direction of force – maximum parameter is available only during perpendicular pulling. The force required to slide of the magnet along the plate is standardly many times lower (approx. 1/5 of the lifting capacity).
Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
Steel type – mild steel gives the best results. Alloy steels decrease magnetic properties and lifting capacity.
Surface condition – ground elements ensure maximum contact, which increases force. Rough surfaces weaken the grip.
Heat – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity was assessed with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, however under shearing force the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate lowers the load capacity.

Safe handling of NdFeB magnets

Hand protection

Big blocks can smash fingers instantly. Never put your hand betwixt two strong magnets.

Threat to navigation

GPS units and smartphones are extremely susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Demagnetization risk

Keep cool. NdFeB magnets are susceptible to temperature. If you need resistance above 80°C, ask us about special high-temperature series (H, SH, UH).

Avoid contact if allergic

Medical facts indicate that nickel (standard magnet coating) is a strong allergen. For allergy sufferers, prevent touching magnets with bare hands or choose encased magnets.

ICD Warning

Medical warning: Strong magnets can turn off heart devices and defibrillators. Stay away if you have medical devices.

Dust is flammable

Fire warning: Neodymium dust is highly flammable. Do not process magnets without safety gear as this may cause fire.

Powerful field

Handle magnets with awareness. Their immense force can shock even professionals. Plan your moves and respect their force.

Swallowing risk

Only for adults. Small elements pose a choking risk, leading to intestinal necrosis. Store out of reach of children and animals.

Magnets are brittle

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Collision of two magnets leads to them breaking into small pieces.

Electronic devices

Very strong magnetic fields can corrupt files on payment cards, hard drives, and other magnetic media. Keep a distance of min. 10 cm.

Attention! Want to know more? Check our post: Why 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

Engineering modeling of the product - data

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

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

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

Table 4: Steel thickness (substrate influence) - power losses MW 8x20 / N38

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

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

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

Table 8: Collisions (kinetic energy) - warning MW 8x20 / N38

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

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

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

1. Vertical hold

2. Steel saturation

3. Heat tolerance

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

Chemical composition

Sustainability

Magnet pull force

Field Strength

Other offers

KM HF - 22 kg - magnetic bracket

MP 10x4.3x4 / N38 - ring magnet

UMGZ 60x30x15 [M10] GZ / N38 - magnetic holder external thread

MP 20x8x5 / N38 - ring magnet

Strengths as well as weaknesses of rare earth magnets.

Advantages

Limitations

Lifting parameters

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

Key elements affecting lifting force

Safe handling of NdFeB magnets

Hand protection

Threat to navigation

Demagnetization risk

Avoid contact if allergic

ICD Warning

Dust is flammable

Powerful field

Swallowing risk

Magnets are brittle

Electronic devices

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

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

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

Table 4: Steel thickness (substrate influence) - power losses
MW 8x20 / N38

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

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

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

Table 8: Collisions (kinetic energy) - warning
MW 8x20 / N38

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

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

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