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MW 20x35 / 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 010043

GTIN/EAN: 5906301810421

5.00

Diameter Ø

20 mm [±0,1 mm]

Height

35 mm [±0,1 mm]

Weight

82.47 g

Magnetization Direction

↑ axial

Load capacity

9.58 kg / 93.97 N

Magnetic Induction

595.77 mT / 5958 Gs

Coating

[NiCuNi] Nickel

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49.52 ZŁ with VAT / pcs + price for transport

40.26 ZŁ net + 23% VAT / pcs

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Technical specification - MW 20x35 / N38 - cylindrical magnet

Specification / characteristics - MW 20x35 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010043
GTIN/EAN	5906301810421
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	35 mm [±0,1 mm]
Weight	82.47 g
Magnetization Direction	↑ axial
Load capacity ~ ?	9.58 kg / 93.97 N
Magnetic Induction ~ ?	595.77 mT / 5958 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 20x35 / 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 - technical parameters

The following data constitute the direct effect of a physical analysis. Results are based on algorithms for the material Nd₂Fe₁₄B. Real-world conditions might slightly differ from theoretical values. Use these calculations as a reference point for designers.

Table 1: Static pull force (pull vs distance) - characteristics
MW 20x35 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5955 Gs 595.5 mT	9.58 kg / 21.12 pounds 9580.0 g / 94.0 N	medium risk
1 mm	5357 Gs 535.7 mT	7.75 kg / 17.09 pounds 7751.3 g / 76.0 N	medium risk
2 mm	4769 Gs 476.9 mT	6.14 kg / 13.55 pounds 6144.2 g / 60.3 N	medium risk
3 mm	4214 Gs 421.4 mT	4.80 kg / 10.58 pounds 4797.3 g / 47.1 N	medium risk
5 mm	3242 Gs 324.2 mT	2.84 kg / 6.26 pounds 2839.3 g / 27.9 N	medium risk
10 mm	1668 Gs 166.8 mT	0.75 kg / 1.66 pounds 751.8 g / 7.4 N	low risk
15 mm	921 Gs 92.1 mT	0.23 kg / 0.51 pounds 229.1 g / 2.2 N	low risk
20 mm	555 Gs 55.5 mT	0.08 kg / 0.18 pounds 83.1 g / 0.8 N	low risk
30 mm	246 Gs 24.6 mT	0.02 kg / 0.04 pounds 16.4 g / 0.2 N	low risk
50 mm	78 Gs 7.8 mT	0.00 kg / 0.00 pounds 1.6 g / 0.0 N	low risk

Pulling power drops drastically per each millimeter of gap. Note that even a microscopic distance (e.g., dirt, varnish, rust) noticeably diminishes the holding power. Magnetic products hold strongest at the point of direct contact; distance drastically cuts the force. Observe how quickly the load capacity fall, when the magnet does not touch tightly to the steel surface. When designing the assembly, eliminate additional spacers.

Table 2: Slippage force (vertical surface)
MW 20x35 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.92 kg / 4.22 pounds 1916.0 g / 18.8 N
1 mm	Stal (~0.2)	1.55 kg / 3.42 pounds 1550.0 g / 15.2 N
2 mm	Stal (~0.2)	1.23 kg / 2.71 pounds 1228.0 g / 12.0 N
3 mm	Stal (~0.2)	0.96 kg / 2.12 pounds 960.0 g / 9.4 N
5 mm	Stal (~0.2)	0.57 kg / 1.25 pounds 568.0 g / 5.6 N
10 mm	Stal (~0.2)	0.15 kg / 0.33 pounds 150.0 g / 1.5 N
15 mm	Stal (~0.2)	0.05 kg / 0.10 pounds 46.0 g / 0.5 N
20 mm	Stal (~0.2)	0.02 kg / 0.04 pounds 16.0 g / 0.2 N
30 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

The table below calculates the approximate shear load necessary to start the shifting of the magnet downwards against a upright metal surface (assuming typical friction coefficient). The holding force is a function of the gap size between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MW 20x35 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.87 kg / 6.34 pounds 2874.0 g / 28.2 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.92 kg / 4.22 pounds 1916.0 g / 18.8 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.96 kg / 2.11 pounds 958.0 g / 9.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	4.79 kg / 10.56 pounds 4790.0 g / 47.0 N

When mounting a holder on a upright surface (e.g., a fridge), it you can count on only approx. 1/5 of its maximum pull force. Gravitational force and a weak degree of grip influence the fact that magnets slip faster than they pop off the substrate. Want to create a hanger? Note that the shear force is significantly lower than the maximum static pull force. On a painted metal, the magnet will slide down under a noticeably lighter load. Using a rubber pad can drastically raise the stability.

Table 4: Material efficiency (substrate influence) - power losses
MW 20x35 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.96 kg / 2.11 pounds 958.0 g / 9.4 N
1 mm	25%	2.40 kg / 5.28 pounds 2395.0 g / 23.5 N
2 mm	50%	4.79 kg / 10.56 pounds 4790.0 g / 47.0 N
3 mm	75%	7.19 kg / 15.84 pounds 7185.0 g / 70.5 N
5 mm	100%	9.58 kg / 21.12 pounds 9580.0 g / 94.0 N
10 mm	100%	9.58 kg / 21.12 pounds 9580.0 g / 94.0 N
11 mm	100%	9.58 kg / 21.12 pounds 9580.0 g / 94.0 N
12 mm	100%	9.58 kg / 21.12 pounds 9580.0 g / 94.0 N

A thin metal plate cannot focus the full magnetic flux, which squanders power of the holder. Should you install a neodymium to a weak sheet, the flux will penetrate right through and the holding will be smaller. To utilize the maximum of this neodymium's power, you require a sufficiently solid piece of metal. The saturation phenomenon causes that on thin elements (e.g., car bodies), the product works worse. We suggest choosing the steel cross-section according to the table below.

Table 5: Working in heat (stability) - thermal limit
MW 20x35 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	9.58 kg / 21.12 pounds 9580.0 g / 94.0 N	OK
40 °C	-2.2%	9.37 kg / 20.66 pounds 9369.2 g / 91.9 N	OK
60 °C	-4.4%	9.16 kg / 20.19 pounds 9158.5 g / 89.8 N	OK
80 °C	-6.6%	8.95 kg / 19.73 pounds 8947.7 g / 87.8 N
100 °C	-28.8%	6.82 kg / 15.04 pounds 6821.0 g / 66.9 N

Ordinary NdFeB products irreversibly lose strength above the temperature limit. Watch out for overheating – excessive heat can permanently demagnetize this product. With every degree above norm, the neodymium's capacity briefly lowers. Avoid using this product close to ovens higher than its safe range. Ignoring the limit will result in destruction of magnetism.

*Engineering note: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (pancake types) may lose charge permanently at lower temperatures than long magnets. Red status in the table signals a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - field collision
MW 20x35 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	68.69 kg / 151.44 pounds 6 132 Gs	10.30 kg / 22.72 pounds 10304 g / 101.1 N	N/A
1 mm	62.01 kg / 136.70 pounds 11 316 Gs	9.30 kg / 20.50 pounds 9301 g / 91.2 N	55.81 kg / 123.03 pounds ~0 Gs
2 mm	55.58 kg / 122.53 pounds 10 714 Gs	8.34 kg / 18.38 pounds 8337 g / 81.8 N	50.02 kg / 110.28 pounds ~0 Gs
3 mm	49.59 kg / 109.32 pounds 10 120 Gs	7.44 kg / 16.40 pounds 7438 g / 73.0 N	44.63 kg / 98.39 pounds ~0 Gs
5 mm	38.99 kg / 85.96 pounds 8 974 Gs	5.85 kg / 12.89 pounds 5849 g / 57.4 N	35.09 kg / 77.37 pounds ~0 Gs
10 mm	20.36 kg / 44.88 pounds 6 484 Gs	3.05 kg / 6.73 pounds 3054 g / 30.0 N	18.32 kg / 40.40 pounds ~0 Gs
20 mm	5.39 kg / 11.88 pounds 3 337 Gs	0.81 kg / 1.78 pounds 809 g / 7.9 N	4.85 kg / 10.70 pounds ~0 Gs
50 mm	0.25 kg / 0.55 pounds 718 Gs	0.04 kg / 0.08 pounds 37 g / 0.4 N	0.22 kg / 0.50 pounds ~0 Gs
60 mm	0.12 kg / 0.26 pounds 492 Gs	0.02 kg / 0.04 pounds 18 g / 0.2 N	0.11 kg / 0.23 pounds ~0 Gs
70 mm	0.06 kg / 0.13 pounds 352 Gs	0.01 kg / 0.02 pounds 9 g / 0.1 N	0.05 kg / 0.12 pounds ~0 Gs
80 mm	0.03 kg / 0.07 pounds 261 Gs	0.00 kg / 0.01 pounds 5 g / 0.0 N	0.03 kg / 0.07 pounds ~0 Gs
90 mm	0.02 kg / 0.04 pounds 200 Gs	0.00 kg / 0.01 pounds 3 g / 0.0 N	0.02 kg / 0.04 pounds ~0 Gs
100 mm	0.01 kg / 0.03 pounds 156 Gs	0.00 kg / 0.00 pounds 2 g / 0.0 N	0.01 kg / 0.02 pounds ~0 Gs

Two strong neodymiums attract each other from a significantly greater distance than a magnet and steel setup. The connection of magnet-to-magnet generates a stronger field and a larger range of action. Want to build a solid fastener? Apply two magnets instead of one magnet and a striker plate. Exercise caution that when bringing together two magnets, the collision energy is huge. The repulsion force is slightly lower than the connection force, but still significant.
*The magnetic induction in repulsion mode reaches ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
Attention: Results show shear force of a pair of identical magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - precautionary measures
MW 20x35 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	15.0 cm
Hearing aid	10 Gs (1.0 mT)	11.5 cm
Timepiece	20 Gs (2.0 mT)	9.0 cm
Mobile device	40 Gs (4.0 mT)	7.0 cm
Car key	50 Gs (5.0 mT)	6.5 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

A strong magnetic field is a real danger to electronic devices and pacemakers. These NdFeB products produce a field that prevents correct functioning of digital equipment. Be aware: the unseen radiation passes through tissues and glass. Exceptional care must be taken by people with hearing aids and insulin pumps. The risk also applies to: automatic timepieces, remotes, membranes, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MW 20x35 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	11.39 km/h (3.16 m/s)	0.41 J
30 mm	18.85 km/h (5.24 m/s)	1.13 J
50 mm	24.31 km/h (6.75 m/s)	1.88 J
100 mm	34.37 km/h (9.55 m/s)	3.76 J

Neodymium magnets are delicate – a collision with steel can result in shattering. Pay attention to connection velocity – a magnet released freely turns into a projectile. Kinetic force can destroy the magnet or dangerous crushing to fingers. Hold the magnet firmly during installation so it doesn't hit violently against the metal. A collision at high speed means shattering of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 20x35 / 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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (P_c)
MW 20x35 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	20 408 Mx	204.1 µWb
P_c Coefficient	1.16	High (Stable)

Flux value passing through the pole surface. Key data when building generators as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Physics of underwater searching
MW 20x35 / N38

Environment	Effective steel pull	Effect
Air (land)	9.58 kg	Standard
Water (riverbed)	10.97 kg (+1.39 kg buoyancy gain)	+14.5%

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

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Sliding resistance

*Warning: On a vertical wall, the magnet retains just ~20% of its max power.

2. Steel saturation

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

3. Temperature resistance

*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) = 1.16

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.

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: 010043-2026

Magnet Unit Converter

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MP 40x22x10 / N38 - ring magnet

40.59 ZŁ brutto / pcs

The offered product is an exceptionally strong cylindrical magnet, produced from modern NdFeB material, which, at dimensions of Ø20x35 mm, guarantees the highest energy density. The MW 20x35 / N38 component boasts high dimensional repeatability and professional build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 9.58 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

It finds application in DIY projects, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 93.97 N with a weight of only 82.47 g, this rod is indispensable in electronics and wherever every gram matters.

Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 20.1 mm) using epoxy glues. To ensure stability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Magnets NdFeB grade N38 are strong enough for 90% of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø20x35), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

The presented product is a neodymium magnet with precisely defined parameters: diameter 20 mm and height 35 mm. The value of 93.97 N means that the magnet is capable of holding a weight many times exceeding its own mass of 82.47 g. The product has a [NiCuNi] coating, which protects the surface 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. 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 through the diameter if your project requires it.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Pros

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

They do not lose power, even during approximately ten years – the drop in lifting capacity is only ~1% (based on measurements),
Neodymium magnets are characterized by remarkably resistant to loss of magnetic properties caused by external interference,
The use of an shiny layer of noble metals (nickel, gold, silver) causes the element to present itself better,
They are known for high magnetic induction at the operating surface, which affects their effectiveness,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
Thanks to flexibility in forming and the capacity to modify to client solutions,
Wide application in modern industrial fields – they serve a role in mass storage devices, motor assemblies, precision medical tools, also modern systems.
Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Limitations

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 increases its resistance to damage
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
Limited ability of creating threads in the magnet and complex forms - recommended is casing - magnetic holder.
Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Additionally, tiny parts of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Lifting parameters

Best holding force of the magnet in ideal parameters – what affects it?

The declared magnet strength concerns the peak performance, measured under laboratory conditions, specifically:

using a sheet made of mild steel, acting as a magnetic yoke
whose transverse dimension reaches at least 10 mm
with an ground touching surface
under conditions of ideal adhesion (surface-to-surface)
during pulling in a direction perpendicular to the plane
at ambient temperature approx. 20 degrees Celsius

Determinants of practical lifting force of a magnet

Effective lifting capacity is influenced by working environment parameters, mainly (from priority):

Air gap (between the magnet and the metal), since even a microscopic distance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
Base massiveness – too thin sheet does not close the flux, causing part of the flux to be lost to the other side.
Material type – the best choice is pure iron steel. Stainless steels may attract less.
Surface finish – full contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Thermal environment – temperature increase 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 optimal thickness (min. 20 mm), under vertically applied force, in contrast under shearing force the holding force is lower. Additionally, even a minimal clearance between the magnet and the plate lowers the load capacity.

H&S for magnets

Power loss in heat

Keep cool. NdFeB magnets are sensitive to temperature. If you require operation above 80°C, look for special high-temperature series (H, SH, UH).

Fragile material

NdFeB magnets are ceramic materials, which means they are fragile like glass. Clashing of two magnets will cause them shattering into shards.

Safe distance

Data protection: Strong magnets can damage data carriers and delicate electronics (heart implants, hearing aids, mechanical watches).

GPS Danger

Be aware: rare earth magnets produce a field that disrupts precision electronics. Maintain a separation from your mobile, device, and navigation systems.

Fire warning

Dust produced during cutting of magnets is self-igniting. Avoid drilling into magnets without proper cooling and knowledge.

Implant safety

Patients with a ICD should keep an large gap from magnets. The magnetic field can disrupt the functioning of the implant.

Finger safety

Protect your hands. Two large magnets will snap together instantly with a force of massive weight, crushing everything in their path. Be careful!

Handling rules

Before use, check safety instructions. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Allergic reactions

Medical facts indicate that the nickel plating (the usual finish) is a potent allergen. If your skin reacts to metals, refrain from direct skin contact or choose encased magnets.

Do not give to children

Always keep magnets out of reach of children. Ingestion danger is significant, and the effects of magnets clamping inside the body are fatal.

Safety First! More info about risks in the article: Safety of working with magnets.

MW 20x35 / N38 - cylindrical magnet

Technical specification - MW 20x35 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the assembly - technical parameters

Table 1: Static pull force (pull vs distance) - characteristics MW 20x35 / N38

Table 2: Slippage force (vertical surface) MW 20x35 / N38

Table 3: Vertical assembly (sliding) - vertical pull MW 20x35 / N38

Table 4: Material efficiency (substrate influence) - power losses MW 20x35 / N38

Table 5: Working in heat (stability) - thermal limit MW 20x35 / N38

Table 6: Two magnets (repulsion) - field collision MW 20x35 / N38

Table 7: Protective zones (electronics) - precautionary measures MW 20x35 / N38

Table 8: Impact energy (kinetic energy) - warning MW 20x35 / N38

Table 9: Anti-corrosion coating durability MW 20x35 / N38

Table 10: Construction data (Pc) MW 20x35 / N38

Table 11: Physics of underwater searching MW 20x35 / N38

1. Sliding resistance

2. Steel saturation

3. Temperature resistance

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

Chemical composition

Sustainability

Force (pull)

Magnetic Field

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Advantages and disadvantages of Nd2Fe14B magnets.

Pros

Limitations

Lifting parameters

Best holding force of the magnet in ideal parameters – what affects it?

Determinants of practical lifting force of a magnet

H&S for magnets

Power loss in heat

Fragile material

Safe distance

GPS Danger

Fire warning

Implant safety

Finger safety

Handling rules

Allergic reactions

Do not give to children

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - characteristics
MW 20x35 / N38

Table 2: Slippage force (vertical surface)
MW 20x35 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MW 20x35 / N38

Table 4: Material efficiency (substrate influence) - power losses
MW 20x35 / N38

Table 5: Working in heat (stability) - thermal limit
MW 20x35 / N38

Table 6: Two magnets (repulsion) - field collision
MW 20x35 / N38

Table 7: Protective zones (electronics) - precautionary measures
MW 20x35 / N38

Table 8: Impact energy (kinetic energy) - warning
MW 20x35 / N38

Table 9: Anti-corrosion coating durability
MW 20x35 / N38

Table 10: Construction data (P_c)
MW 20x35 / N38

Table 11: Physics of underwater searching
MW 20x35 / N38

Advantages and disadvantages of Nd₂Fe₁₄B magnets.