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MW 20x18 / 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 010040

GTIN/EAN: 5906301810391

Diameter Ø

20 mm [±0,1 mm]

Height

18 mm [±0,1 mm]

Weight

42.41 g

Magnetization Direction

↑ axial

Load capacity

13.19 kg / 129.35 N

Magnetic Induction

541.64 mT / 5416 Gs

Coating

[NiCuNi] Nickel

product specifications »

23.54 ZŁ with VAT / pcs + price for transport

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Technical of the product - MW 20x18 / N38 - cylindrical magnet

Specification / characteristics - MW 20x18 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010040
GTIN/EAN	5906301810391
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	18 mm [±0,1 mm]
Weight	42.41 g
Magnetization Direction	↑ axial
Load capacity ~ ?	13.19 kg / 129.35 N
Magnetic Induction ~ ?	541.64 mT / 5416 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 20x18 / 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 assembly - data

The following information constitute the outcome of a physical simulation. Results were calculated on models for the class Nd₂Fe₁₄B. Actual performance may differ. Please consider these data as a supplementary guide when designing systems.

Table 1: Static force (pull vs gap) - characteristics
MW 20x18 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5414 Gs 541.4 mT	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N	critical level
1 mm	4870 Gs 487.0 mT	10.67 kg / 23.52 LBS 10669.5 g / 104.7 N	critical level
2 mm	4330 Gs 433.0 mT	8.43 kg / 18.59 LBS 8434.2 g / 82.7 N	medium risk
3 mm	3816 Gs 381.6 mT	6.55 kg / 14.45 LBS 6552.7 g / 64.3 N	medium risk
5 mm	2913 Gs 291.3 mT	3.82 kg / 8.42 LBS 3818.4 g / 37.5 N	medium risk
10 mm	1455 Gs 145.5 mT	0.95 kg / 2.10 LBS 952.2 g / 9.3 N	weak grip
15 mm	775 Gs 77.5 mT	0.27 kg / 0.60 LBS 270.1 g / 2.7 N	weak grip
20 mm	450 Gs 45.0 mT	0.09 kg / 0.20 LBS 91.3 g / 0.9 N	weak grip
30 mm	188 Gs 18.8 mT	0.02 kg / 0.04 LBS 15.9 g / 0.2 N	weak grip
50 mm	54 Gs 5.4 mT	0.00 kg / 0.00 LBS 1.3 g / 0.0 N	weak grip

Pulling power drops drastically per each millimeter of distance. Note that even the smallest gap (e.g., dirt, varnish, rust) strongly reduces the pull force. Magnetic products hold optimally at the point of direct contact; distance drastically cuts the force. See how flashily the load capacity plummet, when the magnet does not adhere tightly to the metal substrate. When planning the arrangement, discard redundant distances.

Table 2: Sliding load (wall)
MW 20x18 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.64 kg / 5.82 LBS 2638.0 g / 25.9 N
1 mm	Stal (~0.2)	2.13 kg / 4.70 LBS 2134.0 g / 20.9 N
2 mm	Stal (~0.2)	1.69 kg / 3.72 LBS 1686.0 g / 16.5 N
3 mm	Stal (~0.2)	1.31 kg / 2.89 LBS 1310.0 g / 12.9 N
5 mm	Stal (~0.2)	0.76 kg / 1.68 LBS 764.0 g / 7.5 N
10 mm	Stal (~0.2)	0.19 kg / 0.42 LBS 190.0 g / 1.9 N
15 mm	Stal (~0.2)	0.05 kg / 0.12 LBS 54.0 g / 0.5 N
20 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 18.0 g / 0.2 N
30 mm	Stal (~0.2)	0.00 kg / 0.01 LBS 4.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

The following data shows the estimated weight limit required to initiate the downward movement of the magnet downwards along a vertical metal surface (assuming standard friction). The holding force is a function of the gap size between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
MW 20x18 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	3.96 kg / 8.72 LBS 3957.0 g / 38.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.64 kg / 5.82 LBS 2638.0 g / 25.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.32 kg / 2.91 LBS 1319.0 g / 12.9 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	6.60 kg / 14.54 LBS 6595.0 g / 64.7 N

When hanging a element on a vertical wall (e.g., a car body), it will only hold only about 1/5 of its maximum pull force. Gravity as well as a weak degree of grip influence the fact that holders slide down easier than they pull off. Designing a hanger? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the element will slip down under a significantly smaller weight. Application of an anti-slip layer can significantly improve the result.

Table 4: Steel thickness (substrate influence) - power losses
MW 20x18 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.66 kg / 1.45 LBS 659.5 g / 6.5 N
1 mm	13%	1.65 kg / 3.63 LBS 1648.8 g / 16.2 N
2 mm	25%	3.30 kg / 7.27 LBS 3297.5 g / 32.3 N
3 mm	38%	4.95 kg / 10.90 LBS 4946.3 g / 48.5 N
5 mm	63%	8.24 kg / 18.17 LBS 8243.8 g / 80.9 N
10 mm	100%	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N
11 mm	100%	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N
12 mm	100%	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N

A thin sheet is unable to conduct the entire magnetic field, which weakens actual performance of the holder. If you mount a strong magnet to a thin surface, the magnetism will pass right through and the holding will be smaller. To squeeze 100% of this magnet's power, you require a sufficiently solid backing of metal. The saturation effect means that on delicate walls (e.g., car bodies), the holder works worse. We advise picking the steel dimension from these parameters.

Table 5: Thermal resistance (stability) - power drop
MW 20x18 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N	OK
40 °C	-2.2%	12.90 kg / 28.44 LBS 12899.8 g / 126.5 N	OK
60 °C	-4.4%	12.61 kg / 27.80 LBS 12609.6 g / 123.7 N	OK
80 °C	-6.6%	12.32 kg / 27.16 LBS 12319.5 g / 120.9 N
100 °C	-28.8%	9.39 kg / 20.70 LBS 9391.3 g / 92.1 N

Ordinary NdFeB products irreversibly lose parameters above the temperature limit. Avoid high temperatures – heat can irreversibly destroy this magnet. With every degree above norm, the neodymium's force briefly drops. Do not use this magnet close to ovens higher than its working range. Too high temperature will result in permanent loss of magnetism.

*Important note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Flat magnets (low permeance coefficient) may lose charge permanently sooner than taller cylinders. The danger warning in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - field collision
MW 20x18 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	56.78 kg / 125.17 LBS 5 968 Gs	8.52 kg / 18.78 LBS 8516 g / 83.5 N	N/A
1 mm	51.26 kg / 113.01 LBS 10 289 Gs	7.69 kg / 16.95 LBS 7689 g / 75.4 N	46.13 kg / 101.71 LBS ~0 Gs
2 mm	45.93 kg / 101.25 LBS 9 739 Gs	6.89 kg / 15.19 LBS 6889 g / 67.6 N	41.33 kg / 91.13 LBS ~0 Gs
3 mm	40.93 kg / 90.24 LBS 9 194 Gs	6.14 kg / 13.54 LBS 6140 g / 60.2 N	36.84 kg / 81.22 LBS ~0 Gs
5 mm	32.06 kg / 70.68 LBS 8 137 Gs	4.81 kg / 10.60 LBS 4809 g / 47.2 N	28.86 kg / 63.62 LBS ~0 Gs
10 mm	16.44 kg / 36.24 LBS 5 826 Gs	2.47 kg / 5.44 LBS 2465 g / 24.2 N	14.79 kg / 32.61 LBS ~0 Gs
20 mm	4.10 kg / 9.04 LBS 2 909 Gs	0.61 kg / 1.36 LBS 615 g / 6.0 N	3.69 kg / 8.13 LBS ~0 Gs
50 mm	0.15 kg / 0.34 LBS 565 Gs	0.02 kg / 0.05 LBS 23 g / 0.2 N	0.14 kg / 0.31 LBS ~0 Gs
60 mm	0.07 kg / 0.15 LBS 376 Gs	0.01 kg / 0.02 LBS 10 g / 0.1 N	0.06 kg / 0.14 LBS ~0 Gs
70 mm	0.03 kg / 0.07 LBS 262 Gs	0.00 kg / 0.01 LBS 5 g / 0.0 N	0.03 kg / 0.07 LBS ~0 Gs
80 mm	0.02 kg / 0.04 LBS 190 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.03 LBS ~0 Gs
90 mm	0.01 kg / 0.02 LBS 142 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
100 mm	0.01 kg / 0.01 LBS 109 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnets attract each other from a wider radius than a magnet and sheet setup. The setup of two magnets creates a more powerful interaction and a larger range of action. Want to build a solid fastener? Use a pair of magnets instead of one magnet and a steel. Remember that when connecting a pair of magnets, the pinch force is extreme. The levitation is marginally weaker than the connection force, but still large.
*Field value for N-N configuration reaches ~0 Gs in the exact middle of the gap (caused by magnetic field nullification).
Note: Estimates apply to sliding force of a pair of matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - warnings
MW 20x18 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	12.5 cm
Hearing aid	10 Gs (1.0 mT)	9.5 cm
Mechanical watch	20 Gs (2.0 mT)	7.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	6.0 cm
Remote	50 Gs (5.0 mT)	5.5 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

Extremely neodym field poses a large risk to electronic devices and medical implants. These magnets generate a field that prevents correct functioning of sensitive medical devices. Notice: the unseen radiation penetrates the body and housings. Exceptional care must be exercised by people with hearing aids and insulin pumps. The risk also applies to: automatic timepieces, car keys, membranes, and displays. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - collision effects
MW 20x18 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	18.57 km/h (5.16 m/s)	0.56 J
30 mm	30.83 km/h (8.56 m/s)	1.56 J
50 mm	39.77 km/h (11.05 m/s)	2.59 J
100 mm	56.24 km/h (15.62 m/s)	5.18 J

Magnetic elements are delicate – a strong collision with metal can result in shattering. Watch the impact speed – a neodymium left loose turns into a projectile. Striking energy can cause material chips or dangerous crushing to fingers. Hold the magnet firmly during bringing near metal so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h means shattering of the neodymium. Use safety goggles when working with large magnets.

Table 9: Coating parameters (durability)
MW 20x18 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (Flux)
MW 20x18 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	17 374 Mx	173.7 µWb
P_c Coefficient	0.85	High (Stable)

Flux value emitted by the magnet pole. Key data in coil applications as well as sensors. P_c value determines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MW 20x18 / N38

Environment	Effective steel pull	Effect
Air (land)	13.19 kg	Standard
Water (riverbed)	15.10 kg (+1.91 kg buoyancy gain)	+14.5%

Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Vertical hold

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

2. Steel saturation

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

3. Power loss vs temp

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.85

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

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%

Ecology and recycling (GPSR)

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 010040-2026

Magnet Unit Converter

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Force in kg

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The offered product is an exceptionally strong rod magnet, composed of advanced NdFeB material, which, at dimensions of Ø20x18 mm, guarantees maximum efficiency. This specific item features an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with significant force (approx. 13.19 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 129.35 N with a weight of only 42.41 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.

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 epoxy glues. To ensure long-term durability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Magnets N38 are suitable for 90% of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø20x18), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

The presented product is a neodymium magnet with precisely defined parameters: diameter 20 mm and height 18 mm. The value of 129.35 N means that the magnet is capable of holding a weight many times exceeding its own mass of 42.41 g. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 18 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is standard 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.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Pros

Besides their high retention, neodymium magnets are valued for these benefits:

Their power is durable, and after around ten years it drops only by ~1% (theoretically),
They are resistant to demagnetization induced by external disturbances,
A magnet with a smooth gold surface looks better,
Magnets have excellent magnetic induction on the outer side,
Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
Possibility of detailed shaping as well as modifying to specific requirements,
Huge importance in advanced technology sectors – they serve a role in computer drives, electric motors, medical devices, and multitasking production systems.
Thanks to their power density, small magnets offer high operating force, in miniature format,

Weaknesses

Disadvantages of neodymium magnets:

They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
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
Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
Limited ability of producing nuts in the magnet and complicated forms - recommended is casing - magnet mounting.
Potential hazard resulting from small fragments of magnets can be dangerous, if swallowed, which becomes key in the context of child health protection. It is also worth noting that small elements of these devices are able to disrupt the diagnostic process medical when they are in the body.
With budget limitations the cost of neodymium magnets is economically unviable,

Holding force characteristics

Maximum lifting capacity of the magnet – what affects it?

The force parameter is a measurement result conducted under specific, ideal conditions:

on a plate made of mild steel, optimally conducting the magnetic field
possessing a thickness of minimum 10 mm to ensure full flux closure
with a plane cleaned and smooth
with total lack of distance (without impurities)
during pulling in a direction vertical to the mounting surface
in temp. approx. 20°C

Practical lifting capacity: influencing factors

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

Distance (between the magnet and the metal), because even a microscopic clearance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, corrosion or dirt).
Angle of force application – highest force is available only during perpendicular pulling. The resistance to sliding of the magnet along the plate is usually several times lower (approx. 1/5 of the lifting capacity).
Steel thickness – too thin steel causes magnetic saturation, causing part of the flux to be wasted into the air.
Steel grade – ideal substrate is pure iron steel. Cast iron may have worse magnetic properties.
Plate texture – smooth surfaces guarantee perfect abutment, which improves force. Uneven metal weaken the grip.
Thermal conditions – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under parallel forces the load capacity is reduced by as much as fivefold. Moreover, even a small distance between the magnet and the plate lowers the load capacity.

Safety rules for work with NdFeB magnets

Do not drill into magnets

Fire hazard: Neodymium dust is highly flammable. Do not process magnets in home conditions as this may cause fire.

Immense force

Exercise caution. Neodymium magnets act from a long distance and snap with huge force, often quicker than you can react.

Cards and drives

Data protection: Strong magnets can ruin payment cards and delicate electronics (heart implants, hearing aids, timepieces).

Nickel allergy

Some people suffer from a sensitization to nickel, which is the typical protective layer for neodymium magnets. Extended handling might lead to a rash. It is best to wear safety gloves.

Keep away from children

NdFeB magnets are not intended for children. Accidental ingestion of a few magnets may result in them attracting across intestines, which poses a direct threat to life and requires immediate surgery.

ICD Warning

Life threat: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Beware of splinters

Protect your eyes. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. Wear goggles.

GPS Danger

Remember: rare earth magnets produce a field that disrupts sensitive sensors. Maintain a safe distance from your phone, tablet, and GPS.

Hand protection

Protect your hands. Two large magnets will join instantly with a force of several hundred kilograms, crushing everything in their path. Be careful!

Heat warning

Do not overheat. Neodymium magnets are sensitive to heat. If you require operation above 80°C, inquire about HT versions (H, SH, UH).

Warning! Learn more about risks in the article: Safety of working with magnets.

MW 20x18 / N38 - cylindrical magnet

Technical of the product - MW 20x18 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the assembly - data

Table 1: Static force (pull vs gap) - characteristics MW 20x18 / N38

Table 2: Sliding load (wall) MW 20x18 / N38

Table 3: Vertical assembly (shearing) - vertical pull MW 20x18 / N38

Table 4: Steel thickness (substrate influence) - power losses MW 20x18 / N38

Table 5: Thermal resistance (stability) - power drop MW 20x18 / N38

Table 6: Two magnets (repulsion) - field collision MW 20x18 / N38

Table 7: Safety (HSE) (implants) - warnings MW 20x18 / N38

Table 8: Dynamics (kinetic energy) - collision effects MW 20x18 / N38

Table 9: Coating parameters (durability) MW 20x18 / N38

Table 10: Electrical data (Flux) MW 20x18 / N38

Table 11: Hydrostatics and buoyancy MW 20x18 / N38

1. Vertical hold

2. Steel saturation

3. Power loss vs temp

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

Chemical composition

Ecology and recycling (GPSR)

Pulling force

Magnetic Field

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Advantages as well as disadvantages of Nd2Fe14B magnets.

Pros

Weaknesses

Holding force characteristics

Maximum lifting capacity of the magnet – what affects it?

Practical lifting capacity: influencing factors

Safety rules for work with NdFeB magnets

Do not drill into magnets

Immense force

Cards and drives

Nickel allergy

Keep away from children

ICD Warning

Beware of splinters

GPS Danger

Hand protection

Heat warning

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - characteristics
MW 20x18 / N38

Table 2: Sliding load (wall)
MW 20x18 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MW 20x18 / N38

Table 4: Steel thickness (substrate influence) - power losses
MW 20x18 / N38

Table 5: Thermal resistance (stability) - power drop
MW 20x18 / N38

Table 6: Two magnets (repulsion) - field collision
MW 20x18 / N38

Table 7: Safety (HSE) (implants) - warnings
MW 20x18 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MW 20x18 / N38

Table 9: Coating parameters (durability)
MW 20x18 / N38

Table 10: Electrical data (Flux)
MW 20x18 / N38

Table 11: Hydrostatics and buoyancy
MW 20x18 / N38

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.