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MW 20x5 / 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 010044

GTIN/EAN: 5906301810438

5.00

Diameter Ø

20 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

11.78 g

Magnetization Direction

↑ axial

Load capacity

6.93 kg / 67.95 N

Magnetic Induction

277.16 mT / 2772 Gs

Coating

[NiCuNi] Nickel

view properties »

5.56 ZŁ with VAT / pcs + price for transport

4.52 ZŁ net + 23% VAT / pcs

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Technical specification - MW 20x5 / N38 - cylindrical magnet

Specification / characteristics - MW 20x5 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010044
GTIN/EAN	5906301810438
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	5 mm [±0,1 mm]
Weight	11.78 g
Magnetization Direction	↑ axial
Load capacity ~ ?	6.93 kg / 67.95 N
Magnetic Induction ~ ?	277.16 mT / 2772 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 20x5 / 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 simulation of the assembly - data

The following information are the direct effect of a physical calculation. Values were calculated on models for the material Nd₂Fe₁₄B. Actual performance may differ from theoretical values. Please consider these data as a preliminary roadmap for designers.

Table 1: Static force (force vs distance) - interaction chart
MW 20x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2771 Gs 277.1 mT	6.93 kg / 15.28 lbs 6930.0 g / 68.0 N	strong
1 mm	2573 Gs 257.3 mT	5.97 kg / 13.17 lbs 5975.0 g / 58.6 N	strong
2 mm	2340 Gs 234.0 mT	4.94 kg / 10.89 lbs 4940.1 g / 48.5 N	strong
3 mm	2092 Gs 209.2 mT	3.95 kg / 8.70 lbs 3948.3 g / 38.7 N	strong
5 mm	1611 Gs 161.1 mT	2.34 kg / 5.17 lbs 2343.4 g / 23.0 N	strong
10 mm	775 Gs 77.5 mT	0.54 kg / 1.19 lbs 541.6 g / 5.3 N	weak grip
15 mm	387 Gs 38.7 mT	0.13 kg / 0.30 lbs 135.0 g / 1.3 N	weak grip
20 mm	211 Gs 21.1 mT	0.04 kg / 0.09 lbs 40.2 g / 0.4 N	weak grip
30 mm	80 Gs 8.0 mT	0.01 kg / 0.01 lbs 5.7 g / 0.1 N	weak grip
50 mm	20 Gs 2.0 mT	0.00 kg / 0.00 lbs 0.4 g / 0.0 N	weak grip

Magnetic force decreases drastically per each millimeter of gap. Remember that even a microscopic distance (e.g., contamination, varnish, dust) noticeably reduces the pull force. Magnetic products hold optimally at the point of direct contact; gap kills the power. See how flashily the parameters fall, when the magnet does not adhere tightly to the steel surface. When designing the mounting, eliminate additional spacers.

Table 2: Shear capacity (wall)
MW 20x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.39 kg / 3.06 lbs 1386.0 g / 13.6 N
1 mm	Stal (~0.2)	1.19 kg / 2.63 lbs 1194.0 g / 11.7 N
2 mm	Stal (~0.2)	0.99 kg / 2.18 lbs 988.0 g / 9.7 N
3 mm	Stal (~0.2)	0.79 kg / 1.74 lbs 790.0 g / 7.7 N
5 mm	Stal (~0.2)	0.47 kg / 1.03 lbs 468.0 g / 4.6 N
10 mm	Stal (~0.2)	0.11 kg / 0.24 lbs 108.0 g / 1.1 N
15 mm	Stal (~0.2)	0.03 kg / 0.06 lbs 26.0 g / 0.3 N
20 mm	Stal (~0.2)	0.01 kg / 0.02 lbs 8.0 g / 0.1 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

The following data calculates the approximate weight limit needed to initiate the sliding of the magnet down against a upright steel wall (assuming standard friction). This value depends on the gap size between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MW 20x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.08 kg / 4.58 lbs 2079.0 g / 20.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.39 kg / 3.06 lbs 1386.0 g / 13.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.69 kg / 1.53 lbs 693.0 g / 6.8 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.47 kg / 7.64 lbs 3465.0 g / 34.0 N

When hanging a holder on a upright wall (e.g., a car body), it will only hold barely about 20%-30% of its maximum pull force. Gravitational force as well as a low friction coefficient mean that magnets slip faster than they pop off the substrate. Designing a vertical fastening? Remember that the sliding force is noticeably lower than the maximum static pull force. On a smooth steel, the holder will give way down under a much lighter cargo. Application of an anti-slip coating can effectively improve the result.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 20x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.69 kg / 1.53 lbs 693.0 g / 6.8 N
1 mm	25%	1.73 kg / 3.82 lbs 1732.5 g / 17.0 N
2 mm	50%	3.47 kg / 7.64 lbs 3465.0 g / 34.0 N
3 mm	75%	5.20 kg / 11.46 lbs 5197.5 g / 51.0 N
5 mm	100%	6.93 kg / 15.28 lbs 6930.0 g / 68.0 N
10 mm	100%	6.93 kg / 15.28 lbs 6930.0 g / 68.0 N
11 mm	100%	6.93 kg / 15.28 lbs 6930.0 g / 68.0 N
12 mm	100%	6.93 kg / 15.28 lbs 6930.0 g / 68.0 N

A too thin steel cannot conduct the entire magnetic field, which weakens actual performance of the magnet. If you mount a strong magnet to a thin surface, the field will pass right through and the holding will be smaller. To squeeze 100% of this neodymium's power, you need a suitably thick piece of steel. The saturation effect means that on delicate walls (e.g., appliance housings), the magnet shows lower pull force. We advise picking the steel dimension according to the table below.

Table 5: Thermal resistance (stability) - thermal limit
MW 20x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	6.93 kg / 15.28 lbs 6930.0 g / 68.0 N	OK
40 °C	-2.2%	6.78 kg / 14.94 lbs 6777.5 g / 66.5 N	OK
60 °C	-4.4%	6.63 kg / 14.61 lbs 6625.1 g / 65.0 N
80 °C	-6.6%	6.47 kg / 14.27 lbs 6472.6 g / 63.5 N
100 °C	-28.8%	4.93 kg / 10.88 lbs 4934.2 g / 48.4 N

Standard neodymium magnets irreversibly lose power past the thermal threshold. Avoid high temperatures – high temperature can irreversibly damage this product. With increasing heat, the magnet's force briefly lowers. Refrain from using this magnet close to heaters exceeding its operating temperature limit. Too high temperature will result in irreversible degradation of magnetic properties.

*Important note: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (low Pc) risk losing magnetic properties at lower temperatures than long magnets. The danger warning in the table signals permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MW 20x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	14.87 kg / 32.79 lbs 4 380 Gs	2.23 kg / 4.92 lbs 2231 g / 21.9 N	N/A
1 mm	13.89 kg / 30.63 lbs 5 357 Gs	2.08 kg / 4.59 lbs 2084 g / 20.4 N	12.50 kg / 27.57 lbs ~0 Gs
2 mm	12.82 kg / 28.27 lbs 5 146 Gs	1.92 kg / 4.24 lbs 1923 g / 18.9 N	11.54 kg / 25.44 lbs ~0 Gs
3 mm	11.71 kg / 25.82 lbs 4 918 Gs	1.76 kg / 3.87 lbs 1757 g / 17.2 N	10.54 kg / 23.24 lbs ~0 Gs
5 mm	9.51 kg / 20.97 lbs 4 433 Gs	1.43 kg / 3.15 lbs 1427 g / 14.0 N	8.56 kg / 18.88 lbs ~0 Gs
10 mm	5.03 kg / 11.09 lbs 3 223 Gs	0.75 kg / 1.66 lbs 754 g / 7.4 N	4.53 kg / 9.98 lbs ~0 Gs
20 mm	1.16 kg / 2.56 lbs 1 549 Gs	0.17 kg / 0.38 lbs 174 g / 1.7 N	1.05 kg / 2.31 lbs ~0 Gs
50 mm	0.03 kg / 0.07 lbs 251 Gs	0.00 kg / 0.01 lbs 5 g / 0.0 N	0.03 kg / 0.06 lbs ~0 Gs
60 mm	0.01 kg / 0.03 lbs 159 Gs	0.00 kg / 0.00 lbs 2 g / 0.0 N	0.01 kg / 0.02 lbs ~0 Gs
70 mm	0.01 kg / 0.01 lbs 107 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
80 mm	0.00 kg / 0.01 lbs 75 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 54 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 41 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two magnets attract each other from a wider radius than a neodymium and metal setup. The connection of two magnets creates a more powerful interaction and a wider radius of operation. Want to build a solid fastener? Use a pair of magnets instead of a neodymium and a striker plate. Be careful that when attracting two neodymiums, the collision energy is huge. The levitation is marginally weaker than the connection force, but still significant.
*Flux density for N-N configuration reaches ~0 Gs in the exact middle between the magnets (resulting from vector opposition).
* Estimates demonstrate sliding force of two same neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (implants) - precautionary measures
MW 20x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	8.5 cm
Hearing aid	10 Gs (1.0 mT)	6.5 cm
Mechanical watch	20 Gs (2.0 mT)	5.5 cm
Mobile device	40 Gs (4.0 mT)	4.0 cm
Car key	50 Gs (5.0 mT)	4.0 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

A strong magnetic field is a serious hazard to electronic devices and pacemakers. These NdFeB products generate a flux that disrupts operation of digital equipment. Remember: the unseen radiation acts through matter and housings. Exceptional care must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, remotes, speakers, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - warning
MW 20x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	25.63 km/h (7.12 m/s)	0.30 J
30 mm	42.39 km/h (11.77 m/s)	0.82 J
50 mm	54.70 km/h (15.19 m/s)	1.36 J
100 mm	77.35 km/h (21.49 m/s)	2.72 J

Neodymium magnets are very brittle – a violent impact against metal causes immediate chipping. Watch the impact speed – a neodymium left loose becomes dangerous. Striking energy can trigger coating fragments or painful pinches to skin. Hold the magnet firmly during bringing near metal so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Coating parameters (durability)
MW 20x5 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (Flux)
MW 20x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	9 675 Mx	96.7 µWb
P_c Coefficient	0.35	Low (Flat)

Flux value passing through the magnet pole. Key data for generator designers and motors. The P_c coefficient determines the working geometry.

Table 11: Physics of underwater searching
MW 20x5 / N38

Environment	Effective steel pull	Effect
Air (land)	6.93 kg	Standard
Water (riverbed)	7.93 kg (+1.00 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. Buoyancy helps in lifting finds.

1. Sliding resistance

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

2. Steel saturation

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

3. Power loss vs temp

*For standard magnets, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.35

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 and environmental data

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: 010044-2026

Measurement Calculator

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This product is an extremely powerful rod magnet, produced from durable NdFeB material, which, at dimensions of Ø20x5 mm, guarantees maximum efficiency. The MW 20x5 / N38 component is characterized by high dimensional repeatability and industrial build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with significant force (approx. 6.93 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

It finds application in modeling, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 67.95 N with a weight of only 11.78 g, this rod 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 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 suitable 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 (Ø20x5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

This model is characterized by dimensions Ø20x5 mm, which, at a weight of 11.78 g, makes it an element with impressive magnetic energy density. The value of 67.95 N means that the magnet is capable of holding a weight many times exceeding its own mass of 11.78 g. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 5 mm), which means that the N and S poles are located on the flat, circular surfaces. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized diametrically if your project requires it.

Strengths and weaknesses of rare earth magnets.

Pros

Besides their tremendous field intensity, neodymium magnets offer the following advantages:

They retain attractive force for nearly 10 years – the loss is just ~1% (based on simulations),
Magnets very well protect themselves against loss of magnetization caused by external fields,
The use of an refined coating of noble metals (nickel, gold, silver) causes the element to present itself better,
The surface of neodymium magnets generates a intense magnetic field – this is a distinguishing feature,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Possibility of precise creating as well as adjusting to concrete requirements,
Fundamental importance in electronics industry – they serve a role in hard drives, electric motors, diagnostic systems, also technologically advanced constructions.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in miniature devices

Weaknesses

Problematic aspects of neodymium magnets: application proposals

At very strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (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 rust. Therefore during using outdoors, we advise using waterproof magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in producing threads and complicated shapes in magnets, we recommend using casing - magnetic mechanism.
Health risk to health – tiny shards of magnets can be dangerous, if swallowed, which gains importance in the context of child health protection. Additionally, tiny parts of these magnets can disrupt the diagnostic process medical when they are in the body.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Maximum magnetic pulling force – what affects it?

The load parameter shown refers to the peak performance, measured under optimal environment, namely:

using a sheet made of high-permeability steel, serving as a ideal flux conductor
possessing a thickness of min. 10 mm to avoid saturation
with an ideally smooth touching surface
under conditions of no distance (metal-to-metal)
for force acting at a right angle (pull-off, not shear)
at temperature approx. 20 degrees Celsius

Impact of factors on magnetic holding capacity in practice

Bear in mind that the working load will differ subject to elements below, in order of importance:

Distance (betwixt the magnet and the metal), since even a tiny distance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to paint, rust or debris).
Load vector – highest force is available only during pulling at a 90° angle. The force required to slide of the magnet along the surface is typically many times lower (approx. 1/5 of the lifting capacity).
Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
Steel type – low-carbon steel gives the best results. Alloy admixtures decrease magnetic properties and lifting capacity.
Surface finish – ideal contact is obtained only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
Thermal conditions – NdFeB sinters have a negative temperature coefficient. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.

Precautions when working with neodymium magnets

Life threat

Warning for patients: Powerful magnets disrupt electronics. Maintain at least 30 cm distance or request help to work with the magnets.

Flammability

Powder generated during grinding of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.

Power loss in heat

Monitor thermal conditions. Exposing the magnet to high heat will ruin its magnetic structure and pulling force.

Magnetic interference

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

Powerful field

Be careful. Rare earth magnets act from a long distance and snap with huge force, often quicker than you can react.

Safe distance

Avoid bringing magnets close to a purse, computer, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.

Warning for allergy sufferers

Some people experience a contact allergy to nickel, which is the common plating for neodymium magnets. Frequent touching can result in skin redness. We recommend use safety gloves.

Crushing risk

Watch your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

This is not a toy

Product intended for adults. Small elements can be swallowed, leading to severe trauma. Keep out of reach of children and animals.

Fragile material

Despite the nickel coating, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Safety First! More info about risks in the article: Magnet Safety Guide.

MW 20x5 / N38 - cylindrical magnet

Technical specification - MW 20x5 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering simulation of the assembly - data

Table 1: Static force (force vs distance) - interaction chart MW 20x5 / N38

Table 2: Shear capacity (wall) MW 20x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull MW 20x5 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MW 20x5 / N38

Table 5: Thermal resistance (stability) - thermal limit MW 20x5 / N38

Table 6: Two magnets (repulsion) - forces in the system MW 20x5 / N38

Table 7: Hazards (implants) - precautionary measures MW 20x5 / N38

Table 8: Dynamics (kinetic energy) - warning MW 20x5 / N38

Table 9: Coating parameters (durability) MW 20x5 / N38

Table 10: Construction data (Flux) MW 20x5 / N38

Table 11: Physics of underwater searching MW 20x5 / N38

1. Sliding resistance

2. Steel saturation

3. Power loss vs temp

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

Material specification

Environmental data

Magnet pull force

Magnetic Field

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Strengths and weaknesses of rare earth magnets.

Pros

Weaknesses

Holding force characteristics

Maximum magnetic pulling force – what affects it?

Impact of factors on magnetic holding capacity in practice

Precautions when working with neodymium magnets

Life threat

Flammability

Power loss in heat

Magnetic interference

Powerful field

Safe distance

Warning for allergy sufferers

Crushing risk

This is not a toy

Fragile material

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - interaction chart
MW 20x5 / N38

Table 2: Shear capacity (wall)
MW 20x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MW 20x5 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 20x5 / N38

Table 5: Thermal resistance (stability) - thermal limit
MW 20x5 / N38

Table 6: Two magnets (repulsion) - forces in the system
MW 20x5 / N38

Table 7: Hazards (implants) - precautionary measures
MW 20x5 / N38

Table 8: Dynamics (kinetic energy) - warning
MW 20x5 / N38

Table 9: Coating parameters (durability)
MW 20x5 / N38

Table 10: Construction data (Flux)
MW 20x5 / N38

Table 11: Physics of underwater searching
MW 20x5 / N38