Product available Ships tomorrow

MW 20x2 / 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 010041

GTIN/EAN: 5906301810407

5.00

Diameter Ø

20 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

4.71 g

Magnetization Direction

↑ axial

Load capacity

1.63 kg / 16.02 N

Magnetic Induction

121.57 mT / 1216 Gs

Coating

[NiCuNi] Nickel

technical parameters »

2.08 ZŁ with VAT / pcs + price for transport

1.690 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

1.690 ZŁ

2.08 ZŁ

price from 400 pcs

1.589 ZŁ

1.954 ZŁ

price from 1500 pcs

1.487 ZŁ

1.829 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Need advice?

Pick up the phone and ask +48 22 499 98 98 or let us know using contact form our website.
Strength and form of magnets can be checked using our modular calculator.

Same-day processing for orders placed before 14:00.

Technical parameters of the product - MW 20x2 / N38 - cylindrical magnet

Specification / characteristics - MW 20x2 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010041
GTIN/EAN	5906301810407
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	2 mm [±0,1 mm]
Weight	4.71 g
Magnetization Direction	↑ axial
Load capacity ~ ?	1.63 kg / 16.02 N
Magnetic Induction ~ ?	121.57 mT / 1216 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 20x2 / 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 - report

The following values constitute the direct effect of a mathematical analysis. Results were calculated on models for the class Nd₂Fe₁₄B. Real-world conditions may differ from theoretical values. Use these calculations as a supplementary guide when designing systems.

Table 1: Static pull force (force vs gap) - characteristics
MW 20x2 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1216 Gs 121.6 mT	1.63 kg / 3.59 lbs 1630.0 g / 16.0 N	weak grip
1 mm	1165 Gs 116.5 mT	1.50 kg / 3.30 lbs 1496.3 g / 14.7 N	weak grip
2 mm	1087 Gs 108.7 mT	1.30 kg / 2.87 lbs 1302.7 g / 12.8 N	weak grip
3 mm	991 Gs 99.1 mT	1.08 kg / 2.39 lbs 1083.7 g / 10.6 N	weak grip
5 mm	783 Gs 78.3 mT	0.68 kg / 1.49 lbs 675.9 g / 6.6 N	weak grip
10 mm	379 Gs 37.9 mT	0.16 kg / 0.35 lbs 158.4 g / 1.6 N	weak grip
15 mm	185 Gs 18.5 mT	0.04 kg / 0.08 lbs 37.9 g / 0.4 N	weak grip
20 mm	99 Gs 9.9 mT	0.01 kg / 0.02 lbs 10.8 g / 0.1 N	weak grip
30 mm	36 Gs 3.6 mT	0.00 kg / 0.00 lbs 1.4 g / 0.0 N	weak grip
50 mm	9 Gs 0.9 mT	0.00 kg / 0.00 lbs 0.1 g / 0.0 N	weak grip

Grip strength drops sharply per each millimeter of spacing. Note that even a very thin break (e.g., dirt, varnish, dust) noticeably diminishes the holding power. Magnetic products operate strongest during direct contact; gap kills the power. Observe how rapidly the parameters plummet, when the magnet does not touch flatly to the metal substrate. When designing the mounting, discard redundant distances.

Table 2: Vertical hold (vertical surface)
MW 20x2 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.33 kg / 0.72 lbs 326.0 g / 3.2 N
1 mm	Stal (~0.2)	0.30 kg / 0.66 lbs 300.0 g / 2.9 N
2 mm	Stal (~0.2)	0.26 kg / 0.57 lbs 260.0 g / 2.6 N
3 mm	Stal (~0.2)	0.22 kg / 0.48 lbs 216.0 g / 2.1 N
5 mm	Stal (~0.2)	0.14 kg / 0.30 lbs 136.0 g / 1.3 N
10 mm	Stal (~0.2)	0.03 kg / 0.07 lbs 32.0 g / 0.3 N
15 mm	Stal (~0.2)	0.01 kg / 0.02 lbs 8.0 g / 0.1 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 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 table below presents the approximate holding capacity required to initiate the sliding of the magnet down against a vertical steel plate (assuming typical friction). This value varies with the gap size between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MW 20x2 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.49 kg / 1.08 lbs 489.0 g / 4.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.33 kg / 0.72 lbs 326.0 g / 3.2 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.16 kg / 0.36 lbs 163.0 g / 1.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.82 kg / 1.80 lbs 815.0 g / 8.0 N

When mounting a magnet on a vertical surface (e.g., a car body), it will only hold only approx. 20%-30% of its nominal power. Gravity as well as a weak degree of grip influence the fact that magnets move down faster than they pop off the substrate. Designing a wall mount? Remember that the shear force is significantly lower than the maximum static pull force. On a painted metal, the element will slip down under a noticeably lighter cargo. Application of an anti-slip pad can effectively raise the stability.

Table 4: Steel thickness (saturation) - sheet metal selection
MW 20x2 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.16 kg / 0.36 lbs 163.0 g / 1.6 N
1 mm	25%	0.41 kg / 0.90 lbs 407.5 g / 4.0 N
2 mm	50%	0.82 kg / 1.80 lbs 815.0 g / 8.0 N
3 mm	75%	1.22 kg / 2.70 lbs 1222.5 g / 12.0 N
5 mm	100%	1.63 kg / 3.59 lbs 1630.0 g / 16.0 N
10 mm	100%	1.63 kg / 3.59 lbs 1630.0 g / 16.0 N
11 mm	100%	1.63 kg / 3.59 lbs 1630.0 g / 16.0 N
12 mm	100%	1.63 kg / 3.59 lbs 1630.0 g / 16.0 N

A too thin steel cannot absorb the entire magnetic field, which weakens actual performance of the holder. Should you install a neodymium to a weak sheet, the field will pass right through and the pull force will drop sharply. To achieve the maximum of this neodymium's potential, you require a sufficiently solid element of steel. The material oversaturation means that on delicate walls (e.g., thin profiles), the product shows lower pull force. We advise picking the steel cross-section according to the table below.

Table 5: Thermal resistance (stability) - power drop
MW 20x2 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	1.63 kg / 3.59 lbs 1630.0 g / 16.0 N	OK
40 °C	-2.2%	1.59 kg / 3.51 lbs 1594.1 g / 15.6 N	OK
60 °C	-4.4%	1.56 kg / 3.44 lbs 1558.3 g / 15.3 N
80 °C	-6.6%	1.52 kg / 3.36 lbs 1522.4 g / 14.9 N
100 °C	-28.8%	1.16 kg / 2.56 lbs 1160.6 g / 11.4 N

Classic neodymiums lose power after exceeding the maximum temperature. Watch out for overheating – high temperature can irreversibly demagnetize this product. With every degree above norm, the magnet's capacity momentarily decreases. Refrain from using this magnet close to heaters higher than its working range. Ignoring the limit will lead to irreversible degradation of magnetism.

*Engineering note: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (pancake types) may lose charge permanently sooner compared to rod magnets. Warning indicator in the table indicates permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 20x2 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.86 kg / 6.31 lbs 2 301 Gs	0.43 kg / 0.95 lbs 429 g / 4.2 N	N/A
1 mm	2.76 kg / 6.09 lbs 2 388 Gs	0.41 kg / 0.91 lbs 414 g / 4.1 N	2.49 kg / 5.48 lbs ~0 Gs
2 mm	2.63 kg / 5.79 lbs 2 329 Gs	0.39 kg / 0.87 lbs 394 g / 3.9 N	2.36 kg / 5.21 lbs ~0 Gs
3 mm	2.47 kg / 5.44 lbs 2 257 Gs	0.37 kg / 0.82 lbs 370 g / 3.6 N	2.22 kg / 4.89 lbs ~0 Gs
5 mm	2.10 kg / 4.62 lbs 2 081 Gs	0.31 kg / 0.69 lbs 315 g / 3.1 N	1.89 kg / 4.16 lbs ~0 Gs
10 mm	1.19 kg / 2.62 lbs 1 565 Gs	0.18 kg / 0.39 lbs 178 g / 1.7 N	1.07 kg / 2.35 lbs ~0 Gs
20 mm	0.28 kg / 0.61 lbs 758 Gs	0.04 kg / 0.09 lbs 42 g / 0.4 N	0.25 kg / 0.55 lbs ~0 Gs
50 mm	0.01 kg / 0.01 lbs 115 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
60 mm	0.00 kg / 0.01 lbs 72 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 33 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 24 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 18 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two strong neodymiums interact from a significantly greater distance than a magnet and steel setup. The setup of magnet-to-magnet creates a more powerful interaction and a larger range of action. Want to build a strong closure? Use a pair of magnets instead of one magnet and a striker plate. Be careful that when connecting a pair of magnets, the collision energy is massive. The levitation is a bit weaker than the attraction, but still significant.
*The magnetic induction between like poles reaches ~0 Gs in the exact middle between the magnets (due to field cancellation).
Attention: Figures refer to friction force of two identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (implants) - precautionary measures
MW 20x2 / 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

Extremely neodym field is a real danger to IT equipment and pacemakers. These neodymiums produce a field that destroys function of sensitive medical devices. Be aware: the unseen radiation passes through tissues and housings. Increased vigilance must be taken by people with hearing aids and insulin pumps. The risk also applies to: mechanical watches, remotes, membranes, and screens. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - warning
MW 20x2 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	19.87 km/h (5.52 m/s)	0.07 J
30 mm	32.51 km/h (9.03 m/s)	0.19 J
50 mm	41.95 km/h (11.65 m/s)	0.32 J
100 mm	59.33 km/h (16.48 m/s)	0.64 J

Neodymium magnets are very brittle – a violent impact against metal risks their cracking. Control the attraction moment – a magnet released freely speeds with massive force. Kinetic force can destroy the magnet or dangerous crushing to skin. Always hold the magnet during mounting so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Use safety goggles when working with powerful specimens.

Table 9: Coating parameters (durability)
MW 20x2 / 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 following table defines the conditions under which this product can be safely used. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
MW 20x2 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 038 Mx	50.4 µWb
P_c Coefficient	0.16	Low (Flat)

Flux value emitted by the pole surface. Key data for generator designers and motors. The P_c coefficient defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 20x2 / N38

Environment	Effective steel pull	Effect
Air (land)	1.63 kg	Standard
Water (riverbed)	1.87 kg (+0.24 kg buoyancy gain)	+14.5%

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

The magnetic field penetrates through water without any losses. However, remember the water resistance when pulling the rope quickly.

1. Shear force

*Note: On a vertical wall, the magnet retains merely ~20% of its nominal pull.

2. Plate thickness effect

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

3. Thermal stability

*For standard magnets, the max working temp is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.16

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.

Engineering data and GPSR

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: 010041-2026

Measurement Calculator

Pulling force

Kilograms (kg)

Force (N)

Force in lbs

Field Strength

Gauss (Gs)

Type a value in a box, to see the remaining fields will recalculate automatically.

Other products

Product available Ships tomorrow

MP 25x12.5x5 / N38 - ring magnet

6.20 ZŁ brutto / pcs

Product available Ships tomorrow

AM ucho małe [M8] - magnetic accessories

4.92 ZŁ brutto / pcs

Product available Ships tomorrow

UMC 32x11/3x8 / N38 - cylindrical magnetic holder

17.98 ZŁ brutto / pcs

Product available Ships tomorrow

UMT 29x38 white / N38 - board holder

6.81 ZŁ brutto / pcs

The offered product is an extremely powerful cylinder magnet, composed of modern NdFeB material, which, with dimensions of Ø20x2 mm, guarantees optimal power. The MW 20x2 / N38 component boasts a tolerance 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. 1.63 kg), this product is in stock from our warehouse in Poland, ensuring quick order fulfillment. Moreover, its Ni-Cu-Ni coating shields 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 high power of 16.02 N with a weight of only 4.71 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.

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

Magnets NdFeB grade N38 are strong enough for the majority of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø20x2), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 20 mm and height 2 mm. The key parameter here is the holding force amounting to approximately 1.63 kg (force ~16.02 N), which, with such defined dimensions, proves the high grade 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 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 diametrically if your project requires it.

Strengths and weaknesses of neodymium magnets.

Strengths

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

Their power remains stable, and after approximately ten years it drops only by ~1% (theoretically),
They have excellent resistance to magnetic field loss when exposed to external magnetic sources,
Thanks to the glossy finish, the surface of Ni-Cu-Ni, gold, or silver gives an visually attractive appearance,
They show high magnetic induction at the operating surface, which affects their effectiveness,
Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
Possibility of exact shaping and optimizing to individual needs,
Key role in modern industrial fields – they are commonly used in data components, drive modules, medical equipment, also technologically advanced constructions.
Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Limitations

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
Limited possibility of producing threads in the magnet and complex forms - recommended is a housing - magnetic holder.
Potential hazard resulting from small fragments of magnets pose a threat, in case of ingestion, which gains importance in the context of child safety. Additionally, tiny parts of these devices can complicate diagnosis medical in case of swallowing.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Maximum lifting force for a neodymium magnet – what affects it?

Breakaway force is the result of a measurement for optimal configuration, assuming:

on a plate made of mild steel, optimally conducting the magnetic flux
possessing a thickness of at least 10 mm to avoid saturation
characterized by lack of roughness
without any air gap between the magnet and steel
during pulling in a direction vertical to the plane
in neutral thermal conditions

Lifting capacity in practice – influencing factors

It is worth knowing that the working load may be lower influenced by elements below, in order of importance:

Distance – the presence of foreign body (rust, dirt, gap) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
Material composition – not every steel reacts the same. High carbon content worsen the interaction with the magnet.
Plate texture – smooth surfaces ensure maximum contact, which increases force. Uneven metal reduce efficiency.
Heat – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity testing was carried out on a smooth plate of optimal thickness, under a perpendicular pulling force, however under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate decreases the load capacity.

Precautions when working with neodymium magnets

Physical harm

Risk of injury: The attraction force is so immense that it can cause blood blisters, pinching, and broken bones. Use thick gloves.

Operating temperature

Keep cool. Neodymium magnets are susceptible to temperature. If you need operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Swallowing risk

Only for adults. Small elements can be swallowed, causing severe trauma. Store away from kids and pets.

Conscious usage

Before starting, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Dust is flammable

Dust produced during machining of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Eye protection

Watch out for shards. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. We recommend safety glasses.

Compass and GPS

A powerful magnetic field interferes with the operation of compasses in smartphones and GPS navigation. Keep magnets close to a device to avoid damaging the sensors.

Cards and drives

Do not bring magnets near a wallet, laptop, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.

Warning for allergy sufferers

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If redness happens, immediately stop working with magnets and use protective gear.

Medical interference

For implant holders: Strong magnetic fields disrupt electronics. Maintain at least 30 cm distance or request help to work with the magnets.

Attention! Learn more about hazards in the article: Magnet Safety Guide.

MW 20x2 / N38 - cylindrical magnet

Technical parameters of the product - MW 20x2 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the magnet - report

Table 1: Static pull force (force vs gap) - characteristics MW 20x2 / N38

Table 2: Vertical hold (vertical surface) MW 20x2 / N38

Table 3: Vertical assembly (sliding) - vertical pull MW 20x2 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MW 20x2 / N38

Table 5: Thermal resistance (stability) - power drop MW 20x2 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range MW 20x2 / N38

Table 7: Hazards (implants) - precautionary measures MW 20x2 / N38

Table 8: Collisions (kinetic energy) - warning MW 20x2 / N38

Table 9: Coating parameters (durability) MW 20x2 / N38

Table 10: Electrical data (Pc) MW 20x2 / N38

Table 11: Underwater work (magnet fishing) MW 20x2 / N38

1. Shear force

2. Plate thickness effect

3. Thermal stability

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

Material specification

Environmental data

Pulling force

Field Strength

Other products

MP 25x12.5x5 / N38 - ring magnet

AM ucho małe [M8] - magnetic accessories

UMC 32x11/3x8 / N38 - cylindrical magnetic holder

UMT 29x38 white / N38 - board holder

Strengths and weaknesses of neodymium magnets.

Strengths

Limitations

Pull force analysis

Maximum lifting force for a neodymium magnet – what affects it?

Lifting capacity in practice – influencing factors

Precautions when working with neodymium magnets

Physical harm

Operating temperature

Swallowing risk

Conscious usage

Dust is flammable

Eye protection

Compass and GPS

Cards and drives

Warning for allergy sufferers

Medical interference

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - characteristics
MW 20x2 / N38

Table 2: Vertical hold (vertical surface)
MW 20x2 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MW 20x2 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MW 20x2 / N38

Table 5: Thermal resistance (stability) - power drop
MW 20x2 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 20x2 / N38

Table 7: Hazards (implants) - precautionary measures
MW 20x2 / N38

Table 8: Collisions (kinetic energy) - warning
MW 20x2 / N38

Table 9: Coating parameters (durability)
MW 20x2 / N38

Table 10: Electrical data (P_c)
MW 20x2 / N38

Table 11: Underwater work (magnet fishing)
MW 20x2 / N38