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MW 21.9x10 / 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 010045

GTIN/EAN: 5906301810445

Diameter Ø

21.9 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

28.25 g

Magnetization Direction

→ diametrical

Load capacity

14.65 kg / 143.71 N

Magnetic Induction

417.89 mT / 4179 Gs

Coating

[NiCuNi] Nickel

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Technical - MW 21.9x10 / N38 - cylindrical magnet

Specification / characteristics - MW 21.9x10 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010045
GTIN/EAN	5906301810445
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	21.9 mm [±0,1 mm]
Height	10 mm [±0,1 mm]
Weight	28.25 g
Magnetization Direction	→ diametrical
Load capacity ~ ?	14.65 kg / 143.71 N
Magnetic Induction ~ ?	417.89 mT / 4179 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 21.9x10 / N38 - cylindrical magnet

properties	values	units
remenance Br [min. - max.] ?	12.2-12.6	kGs
remenance Br [min. - max.] ?	1220-1260	mT
coercivity bHc ?	10.8-11.5	kOe
coercivity bHc ?	860-915	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	36-38	BH max MGOe
energy density [min. - max.] ?	287-303	BH max KJ/m
max. temperature ?	≤ 80	°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	312 - 380	°C
Curie Temperature TF	593 - 716	°F
Specific resistance	150	μΩ⋅cm
Bending strength	250	MPa
Compressive strength	1000~1100	MPa
Thermal expansion parallel (∥) to orientation (M)	(3-4) x 10^-6	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10^-6	°C^-1
Young's modulus	1.7 x 10⁴	kg/mm²

Engineering analysis of the assembly - report

These values are the outcome of a physical calculation. Values are based on algorithms for the material Nd₂Fe₁₄B. Operational parameters may deviate from the simulation results. Please consider these calculations as a reference point for designers.

Table 1: Static force (force vs gap) - interaction chart
MW 21.9x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4178 Gs 417.8 mT	14.65 kg / 32.30 lbs 14650.0 g / 143.7 N	crushing
1 mm	3830 Gs 383.0 mT	12.31 kg / 27.15 lbs 12314.7 g / 120.8 N	crushing
2 mm	3466 Gs 346.6 mT	10.08 kg / 22.23 lbs 10083.5 g / 98.9 N	crushing
3 mm	3104 Gs 310.4 mT	8.09 kg / 17.83 lbs 8086.3 g / 79.3 N	strong
5 mm	2432 Gs 243.2 mT	4.97 kg / 10.95 lbs 4966.5 g / 48.7 N	strong
10 mm	1257 Gs 125.7 mT	1.33 kg / 2.93 lbs 1327.0 g / 13.0 N	low risk
15 mm	671 Gs 67.1 mT	0.38 kg / 0.83 lbs 378.5 g / 3.7 N	low risk
20 mm	386 Gs 38.6 mT	0.13 kg / 0.28 lbs 125.0 g / 1.2 N	low risk
30 mm	156 Gs 15.6 mT	0.02 kg / 0.04 lbs 20.4 g / 0.2 N	low risk
50 mm	43 Gs 4.3 mT	0.00 kg / 0.00 lbs 1.5 g / 0.0 N	low risk

Grip strength weakens significantly per each millimeter of distance. Remember that even a microscopic distance (e.g., contamination, paint, rust) significantly weakens the grip. Magnets operate most effectively during direct contact; gap drastically cuts the force. Analyze how quickly the parameters fall, when the magnet does not adhere flatly to the steel surface. When planning the arrangement, eliminate redundant distances.

Table 2: Slippage load (wall)
MW 21.9x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.93 kg / 6.46 lbs 2930.0 g / 28.7 N
1 mm	Stal (~0.2)	2.46 kg / 5.43 lbs 2462.0 g / 24.2 N
2 mm	Stal (~0.2)	2.02 kg / 4.44 lbs 2016.0 g / 19.8 N
3 mm	Stal (~0.2)	1.62 kg / 3.57 lbs 1618.0 g / 15.9 N
5 mm	Stal (~0.2)	0.99 kg / 2.19 lbs 994.0 g / 9.8 N
10 mm	Stal (~0.2)	0.27 kg / 0.59 lbs 266.0 g / 2.6 N
15 mm	Stal (~0.2)	0.08 kg / 0.17 lbs 76.0 g / 0.7 N
20 mm	Stal (~0.2)	0.03 kg / 0.06 lbs 26.0 g / 0.3 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 table below calculates the estimated force sufficient to cause the downward movement of the magnet downwards on a vertical steel plate (considering typical friction coefficient). This value depends on the gap size between the magnet and the surface.

Table 3: Wall mounting (sliding) - vertical pull
MW 21.9x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	4.40 kg / 9.69 lbs 4395.0 g / 43.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.93 kg / 6.46 lbs 2930.0 g / 28.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.47 kg / 3.23 lbs 1465.0 g / 14.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	7.33 kg / 16.15 lbs 7325.0 g / 71.9 N

When hanging a element on a vertical wall (e.g., a board), it you can count on only approx. 20%-30% of its nominal power. Gravity as well as a low friction coefficient influence the fact that holders slide down faster than they pop off the substrate. Planning a wall mount? Note that the shear force is significantly lower than the perpendicular breakaway force. On a painted metal, the holder will give way down under a noticeably lighter weight. Utilizing a rubberized coating can effectively raise the stability.

Table 4: Steel thickness (saturation) - sheet metal selection
MW 21.9x10 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.73 kg / 1.61 lbs 732.5 g / 7.2 N
1 mm	13%	1.83 kg / 4.04 lbs 1831.3 g / 18.0 N
2 mm	25%	3.66 kg / 8.07 lbs 3662.5 g / 35.9 N
3 mm	38%	5.49 kg / 12.11 lbs 5493.8 g / 53.9 N
5 mm	63%	9.16 kg / 20.19 lbs 9156.3 g / 89.8 N
10 mm	100%	14.65 kg / 32.30 lbs 14650.0 g / 143.7 N
11 mm	100%	14.65 kg / 32.30 lbs 14650.0 g / 143.7 N
12 mm	100%	14.65 kg / 32.30 lbs 14650.0 g / 143.7 N

A thin metal plate is unable to conduct the full magnetic flux, which weakens actual performance of the magnet. If you attach a powerful product to a thin surface, the field will pass right through and the holding will be smaller. To utilize 100% of this neodymium's potential, you need a suitably thick backing of steel. The saturation phenomenon causes that on sheet metal structures (e.g., car bodies), the product works worse. We recommend selecting the steel dimension according to the table below.

Table 5: Thermal resistance (material behavior) - resistance threshold
MW 21.9x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	14.65 kg / 32.30 lbs 14650.0 g / 143.7 N	OK
40 °C	-2.2%	14.33 kg / 31.59 lbs 14327.7 g / 140.6 N	OK
60 °C	-4.4%	14.01 kg / 30.88 lbs 14005.4 g / 137.4 N
80 °C	-6.6%	13.68 kg / 30.17 lbs 13683.1 g / 134.2 N
100 °C	-28.8%	10.43 kg / 23.00 lbs 10430.8 g / 102.3 N

Standard neodymium magnets lose parameters above the temperature limit. Watch out for overheating – high temperature can permanently damage this magnet. As the temperature rises, the neodymium's force temporarily lowers. Do not use this product close to ovens higher than its operating temperature limit. Exceeding the critical threshold will cause permanent loss of magnetism.

*Engineering note: Thermal stability depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (low Pc) risk losing magnetic properties under lower heat stress than taller cylinders. The danger warning in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 21.9x10 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	40.53 kg / 89.35 lbs 5 433 Gs	6.08 kg / 13.40 lbs 6079 g / 59.6 N	N/A
1 mm	37.31 kg / 82.26 lbs 8 017 Gs	5.60 kg / 12.34 lbs 5597 g / 54.9 N	33.58 kg / 74.03 lbs ~0 Gs
2 mm	34.07 kg / 75.11 lbs 7 660 Gs	5.11 kg / 11.27 lbs 5110 g / 50.1 N	30.66 kg / 67.60 lbs ~0 Gs
3 mm	30.92 kg / 68.16 lbs 7 297 Gs	4.64 kg / 10.22 lbs 4637 g / 45.5 N	27.82 kg / 61.34 lbs ~0 Gs
5 mm	25.04 kg / 55.20 lbs 6 567 Gs	3.76 kg / 8.28 lbs 3756 g / 36.8 N	22.54 kg / 49.68 lbs ~0 Gs
10 mm	13.74 kg / 30.29 lbs 4 865 Gs	2.06 kg / 4.54 lbs 2061 g / 20.2 N	12.37 kg / 27.26 lbs ~0 Gs
20 mm	3.67 kg / 8.09 lbs 2 515 Gs	0.55 kg / 1.21 lbs 551 g / 5.4 N	3.30 kg / 7.28 lbs ~0 Gs
50 mm	0.13 kg / 0.29 lbs 476 Gs	0.02 kg / 0.04 lbs 20 g / 0.2 N	0.12 kg / 0.26 lbs ~0 Gs
60 mm	0.06 kg / 0.12 lbs 312 Gs	0.01 kg / 0.02 lbs 8 g / 0.1 N	0.05 kg / 0.11 lbs ~0 Gs
70 mm	0.03 kg / 0.06 lbs 214 Gs	0.00 kg / 0.01 lbs 4 g / 0.0 N	0.02 kg / 0.05 lbs ~0 Gs
80 mm	0.01 kg / 0.03 lbs 153 Gs	0.00 kg / 0.00 lbs 2 g / 0.0 N	0.01 kg / 0.03 lbs ~0 Gs
90 mm	0.01 kg / 0.02 lbs 113 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
100 mm	0.00 kg / 0.01 lbs 86 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two strong neodymiums interact from a much further distance than a magnet and steel setup. The setup of two magnets produces a massive flux and a larger range of performance. Designing a strong closure? Utilize two neodymiums instead of one magnet and a steel. Remember that when bringing together two magnets, the impact force is extreme. The repulsion force is marginally weaker than the connection force, but still large.
*Field value for N-N configuration is approximately ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
* Figures refer to sliding force of dual matching magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - precautionary measures
MW 21.9x10 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	11.0 cm
Hearing aid	10 Gs (1.0 mT)	9.0 cm
Timepiece	20 Gs (2.0 mT)	7.0 cm
Mobile device	40 Gs (4.0 mT)	5.5 cm
Remote	50 Gs (5.0 mT)	5.0 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

Powerful magnet radiation is a real danger to electronics and pacemakers. These NdFeB products produce a flux that destroys function of digital equipment. Remember: the unseen radiation acts through matter and plastic. Special caution must be exercised by people with hearing aids and drug dispensers. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MW 21.9x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	24.23 km/h (6.73 m/s)	0.64 J
30 mm	39.81 km/h (11.06 m/s)	1.73 J
50 mm	51.36 km/h (14.27 m/s)	2.87 J
100 mm	72.63 km/h (20.17 m/s)	5.75 J

Neodymium magnets are very brittle – a strong collision with metal can result in shattering. Pay attention to connection velocity – a neodymium left loose speeds with massive force. Kinetic force can cause material chips or injury to fingers. Hold the magnet firmly during mounting so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear safety glasses when working with large magnets.

Table 9: Anti-corrosion coating durability
MW 21.9x10 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (P_c)
MW 21.9x10 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	16 059 Mx	160.6 µWb
P_c Coefficient	0.55	Low (Flat)

Total magnetic flux emitted by the pole surface. Essential parameter when building generators and motors. P_c value determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 21.9x10 / N38

Environment	Effective steel pull	Effect
Air (land)	14.65 kg	Standard
Water (riverbed)	16.77 kg (+2.12 kg buoyancy gain)	+14.5%

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

Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

*Caution: On a vertical surface, the magnet retains merely approx. 20-30% of its perpendicular strength.

2. Steel thickness impact

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

3. Power loss vs temp

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.55

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical specification and ecology

Material specification

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

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: 010045-2026

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The offered product is an extremely powerful cylindrical magnet, produced from modern NdFeB material, which, with dimensions of Ø21.9x10 mm, guarantees the highest energy density. The MW 21.9x10 / N38 model boasts high dimensional repeatability and professional build quality, making it an excellent solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 14.65 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

This model is created for building electric motors, advanced sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the pull force of 143.71 N with a weight of only 28.25 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.

Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering a great economic balance and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø21.9x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 21.9 mm and height 10 mm. The key parameter here is the holding force amounting to approximately 14.65 kg (force ~143.71 N), which, with such defined dimensions, proves the high grade of the NdFeB material. 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 21.9 mm. 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.

Pros and cons of neodymium magnets.

Advantages

Besides their magnetic performance, neodymium magnets are valued for these benefits:

They have stable power, and over nearly 10 years their attraction force decreases symbolically – ~1% (according to theory),
They are extremely resistant to demagnetization induced by external disturbances,
The use of an shiny finish of noble metals (nickel, gold, silver) causes the element to look better,
Magnetic induction on the working layer of the magnet is extremely intense,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
Due to the ability of accurate molding and adaptation to specialized needs, NdFeB magnets can be created in a variety of shapes and sizes, which increases their versatility,
Huge importance in advanced technology sectors – they are utilized in computer drives, brushless drives, diagnostic systems, as well as modern systems.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Disadvantages of NdFeB magnets:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
They rust in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
We recommend casing - magnetic holder, due to difficulties in realizing threads inside the magnet and complicated shapes.
Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, small elements of these products are able to be problematic in diagnostics medical in case of swallowing.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum lifting capacity of the magnet – what affects it?

The declared magnet strength concerns the maximum value, measured under laboratory conditions, specifically:

on a base made of structural steel, perfectly concentrating the magnetic flux
with a thickness no less than 10 mm
characterized by lack of roughness
with total lack of distance (without impurities)
under axial application of breakaway force (90-degree angle)
in temp. approx. 20°C

Practical lifting capacity: influencing factors

Holding efficiency impacted by specific conditions, including (from priority):

Gap between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
Base massiveness – insufficiently thick steel does not close the flux, causing part of the flux to be lost to the other side.
Metal type – different alloys attracts identically. Alloy additives worsen the interaction with the magnet.
Smoothness – ideal contact is possible only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
Temperature – heating the magnet causes a temporary drop of induction. Check the thermal limit for a given model.

Lifting capacity was determined by applying a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, however under parallel forces the load capacity is reduced by as much as 5 times. Additionally, even a slight gap between the magnet’s surface and the plate decreases the holding force.

Safety rules for work with neodymium magnets

Safe operation

Before starting, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Be predictive.

Medical interference

Life threat: Neodymium magnets can deactivate pacemakers and defibrillators. Do not approach if you have electronic implants.

Physical harm

Watch your fingers. Two large magnets will join immediately with a force of massive weight, crushing everything in their path. Exercise extreme caution!

Threat to electronics

Data protection: Strong magnets can ruin data carriers and sensitive devices (heart implants, medical aids, mechanical watches).

Nickel coating and allergies

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If an allergic reaction occurs, cease working with magnets and use protective gear.

Keep away from electronics

Remember: rare earth magnets generate a field that interferes with precision electronics. Maintain a separation from your phone, tablet, and GPS.

Operating temperature

Regular neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.

Eye protection

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Impact of two magnets leads to them shattering into shards.

Dust is flammable

Machining of NdFeB material poses a fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Keep away from children

Strictly store magnets out of reach of children. Choking hazard is high, and the effects of magnets connecting inside the body are very dangerous.

Attention! Want to know more? Check our post: Are neodymium magnets dangerous?

MW 21.9x10 / N38 - cylindrical magnet

Technical - MW 21.9x10 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the assembly - report

Table 1: Static force (force vs gap) - interaction chart MW 21.9x10 / N38

Table 2: Slippage load (wall) MW 21.9x10 / N38

Table 3: Wall mounting (sliding) - vertical pull MW 21.9x10 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MW 21.9x10 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold MW 21.9x10 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range MW 21.9x10 / N38

Table 7: Hazards (electronics) - precautionary measures MW 21.9x10 / N38

Table 8: Collisions (kinetic energy) - warning MW 21.9x10 / N38

Table 9: Anti-corrosion coating durability MW 21.9x10 / N38

Table 10: Construction data (Pc) MW 21.9x10 / N38

Table 11: Underwater work (magnet fishing) MW 21.9x10 / N38

1. Vertical hold

2. Steel thickness impact

3. Power loss vs temp

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

Material specification

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Induction

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MPL 35x7x3 / N38 - lamellar magnet

MP 30x7/3x3 / N38 - ring magnet

MPL 50x50x25 / N38 - lamellar magnet

SM 32x400 [2xM8] / N52 - magnetic separator

Pros and cons of neodymium magnets.

Advantages

Limitations

Lifting parameters

Maximum lifting capacity of the magnet – what affects it?

Practical lifting capacity: influencing factors

Safety rules for work with neodymium magnets

Safe operation

Medical interference

Physical harm

Threat to electronics

Nickel coating and allergies

Keep away from electronics

Operating temperature

Eye protection

Dust is flammable

Keep away from children

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - interaction chart
MW 21.9x10 / N38

Table 2: Slippage load (wall)
MW 21.9x10 / N38

Table 3: Wall mounting (sliding) - vertical pull
MW 21.9x10 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MW 21.9x10 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold
MW 21.9x10 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 21.9x10 / N38

Table 7: Hazards (electronics) - precautionary measures
MW 21.9x10 / N38

Table 8: Collisions (kinetic energy) - warning
MW 21.9x10 / N38

Table 9: Anti-corrosion coating durability
MW 21.9x10 / N38

Table 10: Construction data (P_c)
MW 21.9x10 / N38

Table 11: Underwater work (magnet fishing)
MW 21.9x10 / N38