Product available Ships tomorrow

MW 45x25 / 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 010072

GTIN/EAN: 5906301810711

5.00

Diameter Ø

45 mm [±0,1 mm]

Height

25 mm [±0,1 mm]

Weight

298.21 g

Magnetization Direction

↑ axial

Load capacity

67.33 kg / 660.51 N

Magnetic Induction

460.72 mT / 4607 Gs

Coating

[NiCuNi] Nickel

see specifications »

101.55 ZŁ with VAT / pcs + price for transport

82.56 ZŁ net + 23% VAT / pcs

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Product card - MW 45x25 / N38 - cylindrical magnet

Specification / characteristics - MW 45x25 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010072
GTIN/EAN	5906301810711
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	45 mm [±0,1 mm]
Height	25 mm [±0,1 mm]
Weight	298.21 g
Magnetization Direction	↑ axial
Load capacity ~ ?	67.33 kg / 660.51 N
Magnetic Induction ~ ?	460.72 mT / 4607 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 45x25 / 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

Technical simulation of the assembly - report

Presented values constitute the outcome of a mathematical analysis. Values rely on models for the class Nd₂Fe₁₄B. Actual performance may differ from theoretical values. Please consider these data as a reference point during assembly planning.

Table 1: Static force (pull vs gap) - interaction chart
MW 45x25 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4606 Gs 460.6 mT	67.33 kg / 148.44 LBS 67330.0 g / 660.5 N	critical level
1 mm	4413 Gs 441.3 mT	61.79 kg / 136.23 LBS 61791.4 g / 606.2 N	critical level
2 mm	4214 Gs 421.4 mT	56.35 kg / 124.22 LBS 56345.9 g / 552.8 N	critical level
3 mm	4014 Gs 401.4 mT	51.11 kg / 112.68 LBS 51112.0 g / 501.4 N	critical level
5 mm	3615 Gs 361.5 mT	41.47 kg / 91.42 LBS 41466.0 g / 406.8 N	critical level
10 mm	2697 Gs 269.7 mT	23.08 kg / 50.89 LBS 23083.9 g / 226.5 N	critical level
15 mm	1965 Gs 196.5 mT	12.25 kg / 27.00 LBS 12247.0 g / 120.1 N	critical level
20 mm	1426 Gs 142.6 mT	6.46 kg / 14.23 LBS 6455.7 g / 63.3 N	medium risk
30 mm	778 Gs 77.8 mT	1.92 kg / 4.24 LBS 1922.5 g / 18.9 N	safe
50 mm	285 Gs 28.5 mT	0.26 kg / 0.57 LBS 257.0 g / 2.5 N	safe

Magnetic force weakens drastically with every mm of spacing. Keep in mind that even a very thin break (e.g., contamination, paint, veneer) significantly weakens the grip. Neodymiums operate optimally in perfect adhesion; air break kills the power. See how rapidly the parameters drop, when the magnet does not adhere directly to the metal substrate. When calculating the mounting, discard unnecessary gaps.

Table 2: Sliding load (wall)
MW 45x25 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	13.47 kg / 29.69 LBS 13466.0 g / 132.1 N
1 mm	Stal (~0.2)	12.36 kg / 27.24 LBS 12358.0 g / 121.2 N
2 mm	Stal (~0.2)	11.27 kg / 24.85 LBS 11270.0 g / 110.6 N
3 mm	Stal (~0.2)	10.22 kg / 22.54 LBS 10222.0 g / 100.3 N
5 mm	Stal (~0.2)	8.29 kg / 18.29 LBS 8294.0 g / 81.4 N
10 mm	Stal (~0.2)	4.62 kg / 10.18 LBS 4616.0 g / 45.3 N
15 mm	Stal (~0.2)	2.45 kg / 5.40 LBS 2450.0 g / 24.0 N
20 mm	Stal (~0.2)	1.29 kg / 2.85 LBS 1292.0 g / 12.7 N
30 mm	Stal (~0.2)	0.38 kg / 0.85 LBS 384.0 g / 3.8 N
50 mm	Stal (~0.2)	0.05 kg / 0.11 LBS 52.0 g / 0.5 N

The table below defines the approximate force sufficient to initiate the downward movement of the magnet downwards along a vertical steel wall (considering typical friction coefficient). The holding force varies with the distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 45x25 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	20.20 kg / 44.53 LBS 20199.0 g / 198.2 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	13.47 kg / 29.69 LBS 13466.0 g / 132.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	6.73 kg / 14.84 LBS 6733.0 g / 66.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	33.67 kg / 74.22 LBS 33665.0 g / 330.3 N

When mounting a element on a vertical surface (e.g., a fridge), it you can count on just about 1/5 of its nominal power. Gravity and a weak degree of grip cause that products slip easier than they pull off. Planning a vertical fastening? Note that the sliding force is noticeably lower than the maximum static pull force. On a painted metal, the element will slip down under a significantly smaller load. Using a rubber layer can drastically improve the result.

Table 4: Steel thickness (saturation) - sheet metal selection
MW 45x25 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	2.24 kg / 4.95 LBS 2244.3 g / 22.0 N
1 mm	8%	5.61 kg / 12.37 LBS 5610.8 g / 55.0 N
2 mm	17%	11.22 kg / 24.74 LBS 11221.7 g / 110.1 N
3 mm	25%	16.83 kg / 37.11 LBS 16832.5 g / 165.1 N
5 mm	42%	28.05 kg / 61.85 LBS 28054.2 g / 275.2 N
10 mm	83%	56.11 kg / 123.70 LBS 56108.3 g / 550.4 N
11 mm	92%	61.72 kg / 136.07 LBS 61719.2 g / 605.5 N
12 mm	100%	67.33 kg / 148.44 LBS 67330.0 g / 660.5 N

A thin sheet cannot take in the entire magnetic field, which squanders power of the magnet. If you mount a strong magnet to a weak sheet, the flux will pass right through and the holding will be smaller. To squeeze the maximum of this neodymium's power, you need a suitably thick backing of steel. The material oversaturation means that on delicate walls (e.g., thin profiles), the magnet holds weaker. We suggest choosing the steel thickness based on the following data.

Table 5: Thermal stability (stability) - power drop
MW 45x25 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	67.33 kg / 148.44 LBS 67330.0 g / 660.5 N	OK
40 °C	-2.2%	65.85 kg / 145.17 LBS 65848.7 g / 646.0 N	OK
60 °C	-4.4%	64.37 kg / 141.91 LBS 64367.5 g / 631.4 N	OK
80 °C	-6.6%	62.89 kg / 138.64 LBS 62886.2 g / 616.9 N
100 °C	-28.8%	47.94 kg / 105.69 LBS 47939.0 g / 470.3 N

Ordinary NdFeB products irreversibly lose parameters 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 decreases. Refrain from using this magnet close to ovens exceeding its safe range. Too high temperature will result in irreversible degradation of magnetism.

*Engineering note: Heat tolerance is determined by both grade, but also on the magnet's shape. Low-profile magnets (pancake types) are more susceptible to demagnetization at lower temperatures than taller cylinders. The danger warning in the table points to a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 45x25 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	208.06 kg / 458.70 LBS 5 651 Gs	31.21 kg / 68.80 LBS 31209 g / 306.2 N	N/A
1 mm	199.55 kg / 439.92 LBS 9 023 Gs	29.93 kg / 65.99 LBS 29932 g / 293.6 N	179.59 kg / 395.93 LBS ~0 Gs
2 mm	190.95 kg / 420.96 LBS 8 826 Gs	28.64 kg / 63.14 LBS 28642 g / 281.0 N	171.85 kg / 378.87 LBS ~0 Gs
3 mm	182.46 kg / 402.26 LBS 8 628 Gs	27.37 kg / 60.34 LBS 27369 g / 268.5 N	164.22 kg / 362.03 LBS ~0 Gs
5 mm	165.94 kg / 365.83 LBS 8 228 Gs	24.89 kg / 54.87 LBS 24891 g / 244.2 N	149.35 kg / 329.25 LBS ~0 Gs
10 mm	128.14 kg / 282.49 LBS 7 230 Gs	19.22 kg / 42.37 LBS 19221 g / 188.6 N	115.32 kg / 254.24 LBS ~0 Gs
20 mm	71.33 kg / 157.26 LBS 5 394 Gs	10.70 kg / 23.59 LBS 10700 g / 105.0 N	64.20 kg / 141.54 LBS ~0 Gs
50 mm	10.72 kg / 23.63 LBS 2 091 Gs	1.61 kg / 3.54 LBS 1608 g / 15.8 N	9.65 kg / 21.26 LBS ~0 Gs
60 mm	5.94 kg / 13.10 LBS 1 557 Gs	0.89 kg / 1.96 LBS 891 g / 8.7 N	5.35 kg / 11.79 LBS ~0 Gs
70 mm	3.41 kg / 7.52 LBS 1 180 Gs	0.51 kg / 1.13 LBS 512 g / 5.0 N	3.07 kg / 6.77 LBS ~0 Gs
80 mm	2.03 kg / 4.48 LBS 910 Gs	0.30 kg / 0.67 LBS 305 g / 3.0 N	1.83 kg / 4.03 LBS ~0 Gs
90 mm	1.25 kg / 2.76 LBS 714 Gs	0.19 kg / 0.41 LBS 188 g / 1.8 N	1.13 kg / 2.48 LBS ~0 Gs
100 mm	0.79 kg / 1.75 LBS 569 Gs	0.12 kg / 0.26 LBS 119 g / 1.2 N	0.71 kg / 1.58 LBS ~0 Gs

Two strong neodymiums attract each other from a wider radius than a neodymium and metal setup. Such a system of two magnets generates a stronger field and a further horizon of action. Want to build a strong closure? Apply two magnets instead of a neodymium and a striker plate. Exercise caution that when connecting a pair of magnets, the pinch force is extreme. The repulsion force is marginally weaker than the connection force, but still significant.
*Field value for N-N configuration drops to ~0 Gs in the exact middle of the gap (resulting from vector opposition).
* Results show sliding force of two identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 45x25 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	24.0 cm
Hearing aid	10 Gs (1.0 mT)	19.0 cm
Timepiece	20 Gs (2.0 mT)	14.5 cm
Mobile device	40 Gs (4.0 mT)	11.5 cm
Remote	50 Gs (5.0 mT)	10.5 cm
Payment card	400 Gs (40.0 mT)	4.5 cm
HDD hard drive	600 Gs (60.0 mT)	3.5 cm

Extremely neodym field is a large risk to electronics and pacemakers. These magnets generate a flux that prevents correct functioning of sensitive medical devices. Be aware: the invisible magnetic field acts through matter and housings. Increased vigilance must be taken by people with hearing aids and drug dispensers. Also at risk are: mechanical watches, car keys, membranes, and screens. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - collision effects
MW 45x25 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	18.11 km/h (5.03 m/s)	3.77 J
30 mm	26.71 km/h (7.42 m/s)	8.21 J
50 mm	33.97 km/h (9.43 m/s)	13.27 J
100 mm	47.92 km/h (13.31 m/s)	26.42 J

NdFeB products are prone to chipping – a collision with steel can result in shattering. Control the attraction moment – a magnet released freely turns into a projectile. Impact energy can cause material chips or dangerous crushing to skin. Be sure to control the product during mounting so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear eye protection when playing with large magnets.

Table 9: Surface protection spec
MW 45x25 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (Flux)
MW 45x25 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	73 928 Mx	739.3 µWb
P_c Coefficient	0.63	High (Stable)

Total magnetic flux passing through the pole surface. Key data in coil applications and motors. The P_c coefficient determines the working geometry.

Table 11: Submerged application
MW 45x25 / N38

Environment	Effective steel pull	Effect
Air (land)	67.33 kg	Standard
Water (riverbed)	77.09 kg (+9.76 kg buoyancy gain)	+14.5%

Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

The magnetic field penetrates through water without any losses. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

*Warning: On a vertical wall, the magnet holds only ~20% of its perpendicular strength.

2. Steel thickness impact

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

3. Thermal stability

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.63

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.

Engineering data and GPSR

Material specification

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

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: 010072-2026

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MPL 5x5x1.2 / N38 - lamellar magnet

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MW 3x2 / N38 - cylindrical magnet

0.1476 ZŁ brutto / pcs

This product is an incredibly powerful cylindrical magnet, made from durable NdFeB material, which, at dimensions of Ø45x25 mm, guarantees the highest energy density. This specific item features high dimensional repeatability and professional build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 67.33 kg), this product is in stock from our European logistics center, ensuring rapid 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 successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 660.51 N with a weight of only 298.21 g, this rod is indispensable in electronics and wherever every gram matters.

Since our magnets have a tolerance of ±0.1mm, the best method is to glue them into holes with a slightly larger diameter (e.g., 45.1 mm) using two-component 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 N38 are strong enough for the majority 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 (Ø45x25), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 45 mm and height 25 mm. The value of 660.51 N means that the magnet is capable of holding a weight many times exceeding its own mass of 298.21 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 25 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized diametrically if your project requires it.

Strengths as well as weaknesses of neodymium magnets.

Pros

Apart from their consistent magnetic energy, neodymium magnets have these key benefits:

They have stable power, and over nearly ten years their attraction force decreases symbolically – ~1% (in testing),
Neodymium magnets are distinguished by highly resistant to demagnetization caused by external magnetic fields,
Thanks to the shimmering finish, the layer of nickel, gold-plated, or silver-plated gives an professional appearance,
Neodymium magnets deliver maximum magnetic induction on a their surface, which allows for strong attraction,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures reaching 230°C and above...
Possibility of accurate forming as well as adapting to specific conditions,
Fundamental importance in electronics industry – they are commonly used in computer drives, drive modules, precision medical tools, and other advanced devices.
Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which allows their use in small systems

Cons

Disadvantages of neodymium magnets:

At very strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
Limited ability of producing nuts in the magnet and complicated shapes - preferred is a housing - mounting mechanism.
Health risk to health – tiny shards of magnets pose a threat, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Additionally, small elements of these devices are able to be problematic in diagnostics medical when they are in the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Highest magnetic holding force – what it depends on?

The specified lifting capacity refers to the peak performance, recorded under laboratory conditions, namely:

using a sheet made of high-permeability steel, serving as a circuit closing element
with a cross-section of at least 10 mm
with a surface cleaned and smooth
without the slightest air gap between the magnet and steel
during detachment in a direction perpendicular to the mounting surface
at ambient temperature room level

Determinants of practical lifting force of a magnet

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

Gap between surfaces – every millimeter of distance (caused e.g. by varnish or dirt) diminishes the pulling force, often by half at just 0.5 mm.
Direction of force – highest force is reached only during pulling at a 90° angle. The shear force of the magnet along the plate is standardly many times lower (approx. 1/5 of the lifting capacity).
Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
Material type – the best choice is pure iron steel. Stainless steels may generate lower lifting capacity.
Surface quality – the more even the plate, the better the adhesion and higher the lifting capacity. Unevenness creates an air distance.
Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was assessed using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet and the plate decreases the load capacity.

Safety rules for work with NdFeB magnets

Do not underestimate power

Handle magnets consciously. Their immense force can surprise even professionals. Stay alert and respect their force.

Do not drill into magnets

Fire hazard: Neodymium dust is explosive. Do not process magnets without safety gear as this may cause fire.

Permanent damage

Avoid heat. NdFeB magnets are susceptible to heat. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Precision electronics

Be aware: rare earth magnets generate a field that confuses sensitive sensors. Maintain a safe distance from your mobile, device, and GPS.

Risk of cracking

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Collision of two magnets will cause them shattering into shards.

This is not a toy

Always store magnets away from children. Ingestion danger is high, and the consequences of magnets clamping inside the body are very dangerous.

Finger safety

Big blocks can crush fingers instantly. Never place your hand betwixt two attracting surfaces.

Allergy Warning

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If an allergic reaction happens, immediately stop working with magnets and wear gloves.

Protect data

Very strong magnetic fields can destroy records on payment cards, HDDs, and storage devices. Stay away of min. 10 cm.

Medical implants

People with a heart stimulator should keep an large gap from magnets. The magnetic field can stop the operation of the implant.

Security! Details about hazards in the article: Safety of working with magnets.

MW 45x25 / N38 - cylindrical magnet

Product card - MW 45x25 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the assembly - report

Table 1: Static force (pull vs gap) - interaction chart MW 45x25 / N38

Table 2: Sliding load (wall) MW 45x25 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MW 45x25 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MW 45x25 / N38

Table 5: Thermal stability (stability) - power drop MW 45x25 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range MW 45x25 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures MW 45x25 / N38

Table 8: Collisions (cracking risk) - collision effects MW 45x25 / N38

Table 9: Surface protection spec MW 45x25 / N38

Table 10: Electrical data (Flux) MW 45x25 / N38

Table 11: Submerged application MW 45x25 / N38

1. Vertical hold

2. Steel thickness impact

3. Thermal stability

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

Material specification

Sustainability

Magnet pull force

Field Strength

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MP 30x7/3x3 / N38 - ring magnet

MP 10x7/3.5x3 / N38 - ring magnet

MPL 5x5x1.2 / N38 - lamellar magnet

MW 3x2 / N38 - cylindrical magnet

Strengths as well as weaknesses of neodymium magnets.

Pros

Cons

Pull force analysis

Highest magnetic holding force – what it depends on?

Determinants of practical lifting force of a magnet

Safety rules for work with NdFeB magnets

Do not underestimate power

Do not drill into magnets

Permanent damage

Precision electronics

Risk of cracking

This is not a toy

Finger safety

Allergy Warning

Protect data

Medical implants

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - interaction chart
MW 45x25 / N38

Table 2: Sliding load (wall)
MW 45x25 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 45x25 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MW 45x25 / N38

Table 5: Thermal stability (stability) - power drop
MW 45x25 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 45x25 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 45x25 / N38

Table 8: Collisions (cracking risk) - collision effects
MW 45x25 / N38

Table 9: Surface protection spec
MW 45x25 / N38

Table 10: Electrical data (Flux)
MW 45x25 / N38

Table 11: Submerged application
MW 45x25 / N38