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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

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101.55 ZŁ with VAT / pcs + price for transport

82.56 ZŁ net + 23% VAT / pcs

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Detailed specification - 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 analysis of the assembly - data

The following data are the outcome of a engineering simulation. Values were calculated on models for the material Nd₂Fe₁₄B. Operational performance might slightly deviate from the simulation results. Please consider these calculations as a reference point for designers.

Table 1: Static pull force (force vs distance) - power drop
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	dangerous!
1 mm	4413 Gs 441.3 mT	61.79 kg / 136.23 lbs 61791.4 g / 606.2 N	dangerous!
2 mm	4214 Gs 421.4 mT	56.35 kg / 124.22 lbs 56345.9 g / 552.8 N	dangerous!
3 mm	4014 Gs 401.4 mT	51.11 kg / 112.68 lbs 51112.0 g / 501.4 N	dangerous!
5 mm	3615 Gs 361.5 mT	41.47 kg / 91.42 lbs 41466.0 g / 406.8 N	dangerous!
10 mm	2697 Gs 269.7 mT	23.08 kg / 50.89 lbs 23083.9 g / 226.5 N	dangerous!
15 mm	1965 Gs 196.5 mT	12.25 kg / 27.00 lbs 12247.0 g / 120.1 N	dangerous!
20 mm	1426 Gs 142.6 mT	6.46 kg / 14.23 lbs 6455.7 g / 63.3 N	warning
30 mm	778 Gs 77.8 mT	1.92 kg / 4.24 lbs 1922.5 g / 18.9 N	low risk
50 mm	285 Gs 28.5 mT	0.26 kg / 0.57 lbs 257.0 g / 2.5 N	low risk

Grip strength drops sharply per each millimeter of distance. Note that even the smallest gap (e.g., dirt, varnish, dust) significantly weakens the grip. Magnetic products hold strongest at the point of direct contact; gap weakens the force. Notice how rapidly the load capacity fall, when the product does not touch tightly to the metal substrate. When planning the arrangement, eliminate additional spacers.

Table 2: Shear force (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 calculates the theoretical shear load necessary to cause the sliding of the magnet vertically on a vertical steel wall (assuming typical friction coefficient). This parameter is a function of the air gap between the magnet and the surface.

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 hanging a holder on a vertical wall (e.g., a car body), it will maintain barely about 20%-30% of nominal attraction strength. Gravity as well as a weak degree of grip cause that holders slide down easier than they pull off. Want to create a hanger? Note that the shear force is much weaker than the maximum static pull force. On a slippery surface, the magnet will slip down under a significantly smaller weight. Application of an anti-slip layer can effectively improve the result.

Table 4: Material efficiency (substrate influence) - 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 full magnetic flux, 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 pull force will drop sharply. To utilize the maximum of this neodymium's power, you require a sufficiently solid backing of steel. The material oversaturation means that on thin elements (e.g., thin profiles), the holder holds weaker. We recommend selecting the steel thickness based on the following data.

Table 5: Thermal resistance (material behavior) - resistance threshold
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

Standard neodymium magnets lose strength past the thermal threshold. Watch out for overheating – high temperature can permanently destroy this magnet. As the temperature rises, the magnet's power temporarily drops. Do not use this magnet near heat sources higher than its working range. Exceeding the critical threshold will result in permanent loss of magnetic properties.

*Important note: Temperature resistance is determined by both grade, but also on the magnet's shape. Low-profile magnets (pancake types) risk losing magnetic properties under lower heat stress compared to rod magnets. Red status in the table signals permanent field degradation for this particular item.

Table 6: Two magnets (attraction) - field collision
MW 45x25 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding 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 magnetic products interact from a wider radius than a neodymium and metal setup. The setup of two magnets creates a more powerful interaction and a further horizon of operation. Designing a solid fastener? Use a pair of magnets instead of one magnet and a striker plate. Be careful that when attracting two neodymiums, the collision energy is extreme. The repulsion force is a bit weaker than the connection force, but still large.
*The magnetic induction for N-N configuration is approximately ~0 Gs in the exact middle between the magnets (due to field cancellation).
Note: Figures apply to shear force of a pair of same magnets (friction ~0.15 for Ni-Ni layer).

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

A strong magnetic field poses a serious hazard to IT equipment and pacemakers. These neodymiums generate a field that disrupts operation of digital equipment. Be aware: the unseen radiation passes through tissues and glass. Special caution must be taken by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, car keys, membranes, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - warning
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

Magnetic elements are delicate – a violent impact against metal causes immediate chipping. Pay attention to connection velocity – a neodymium left loose speeds with massive force. Impact energy can cause material chips or painful pinches to fingers. Be sure to control the product during mounting so it doesn't hit violently against the metal. A collision at high speed means shattering of the magnet. Wear eye protection when handling with powerful specimens.

Table 9: Corrosion resistance
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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (P_c)
MW 45x25 / N38

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

Flux value passing through the pole surface. Essential parameter in coil applications and motors. P_c value determines the working geometry.

Table 11: Underwater work (magnet fishing)
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%

Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

The magnetic field penetrates through water without any losses. However, remember the water resistance when pulling the rope quickly.

1. Sliding resistance

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

2. Steel saturation

*Thin metal sheet (e.g. 0.5mm PC case) significantly limits the holding force.

3. Temperature resistance

*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) = 0.63

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%

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: 010072-2026

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MW 9x3 / N38 - cylindrical magnet

1.132 ZŁ brutto / pcs

The presented product is an exceptionally strong cylindrical magnet, manufactured from modern NdFeB material, which, at dimensions of Ø45x25 mm, guarantees the highest energy density. The MW 45x25 / N38 model is characterized by high dimensional repeatability and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a magnetic rod with impressive force (approx. 67.33 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

This model is perfect for building generators, advanced Hall effect sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 660.51 N with a weight of only 298.21 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.

Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure long-term durability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering a great economic balance and high resistance to demagnetization. If you need even stronger magnets in the same volume (Ø45x25), 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 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. 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.

Pros as well as cons of rare earth magnets.

Benefits

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

They do not lose magnetism, even during around 10 years – the reduction in power is only ~1% (theoretically),
They retain their magnetic properties even under strong external field,
A magnet with a smooth nickel surface has an effective appearance,
The surface of neodymium magnets generates a maximum magnetic field – this is one of their assets,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
Possibility of accurate creating and optimizing to specific needs,
Huge importance in innovative solutions – they find application in hard drives, drive modules, advanced medical instruments, as well as complex engineering applications.
Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Cons

Disadvantages of neodymium magnets:

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
Limited ability of creating nuts in the magnet and complicated shapes - preferred is casing - magnetic holder.
Health risk resulting from small fragments of magnets can be dangerous, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, small components of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
Due to neodymium price, their price is relatively high,

Lifting parameters

Detachment force of the magnet in optimal conditions – what it depends on?

Information about lifting capacity is the result of a measurement for optimal configuration, including:

using a plate made of high-permeability steel, acting as a ideal flux conductor
whose thickness equals approx. 10 mm
with an ideally smooth contact surface
under conditions of no distance (surface-to-surface)
for force applied at a right angle (in the magnet axis)
at conditions approx. 20°C

Lifting capacity in real conditions – factors

Please note that the working load may be lower influenced by the following factors, starting with the most relevant:

Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
Direction of force – maximum parameter is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the plate is standardly many times smaller (approx. 1/5 of the lifting capacity).
Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
Steel type – low-carbon steel gives the best results. Alloy admixtures reduce magnetic permeability and holding force.
Smoothness – ideal contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
Heat – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, whereas under shearing force the load capacity is reduced by as much as 5 times. Moreover, even a minimal clearance between the magnet and the plate reduces the lifting capacity.

Safe handling of NdFeB magnets

Operating temperature

Avoid heat. Neodymium magnets are susceptible to heat. If you need resistance above 80°C, look for special high-temperature series (H, SH, UH).

Do not underestimate power

Before use, read the rules. Uncontrolled attraction can destroy the magnet or hurt your hand. Think ahead.

Sensitization to coating

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If an allergic reaction occurs, cease working with magnets and use protective gear.

Threat to navigation

Navigation devices and smartphones are highly sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Combustion hazard

Machining of NdFeB material poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Threat to electronics

Do not bring magnets near a wallet, computer, or screen. The magnetism can permanently damage these devices and erase data from cards.

Hand protection

Big blocks can smash fingers in a fraction of a second. Never place your hand betwixt two attracting surfaces.

This is not a toy

Adult use only. Small elements can be swallowed, leading to serious injuries. Keep out of reach of kids and pets.

Life threat

Patients with a ICD have to maintain an large gap from magnets. The magnetic field can stop the functioning of the implant.

Shattering risk

NdFeB magnets are ceramic materials, which means they are very brittle. Impact of two magnets leads to them shattering into shards.

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

MW 45x25 / N38 - cylindrical magnet

Detailed specification - MW 45x25 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the assembly - data

Table 1: Static pull force (force vs distance) - power drop MW 45x25 / N38

Table 2: Shear force (wall) MW 45x25 / N38

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

Table 4: Material efficiency (substrate influence) - sheet metal selection MW 45x25 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold MW 45x25 / N38

Table 6: Two magnets (attraction) - field collision MW 45x25 / N38

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

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

Table 9: Corrosion resistance MW 45x25 / N38

Table 10: Construction data (Pc) MW 45x25 / N38

Table 11: Underwater work (magnet fishing) MW 45x25 / N38

1. Sliding resistance

2. Steel saturation

3. Temperature resistance

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

Material specification

Environmental data

Magnet pull force

Magnetic Field

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MW 9x3 / N38 - cylindrical magnet

Pros as well as cons of rare earth magnets.

Benefits

Cons

Lifting parameters

Detachment force of the magnet in optimal conditions – what it depends on?

Lifting capacity in real conditions – factors

Safe handling of NdFeB magnets

Operating temperature

Do not underestimate power

Sensitization to coating

Threat to navigation

Combustion hazard

Threat to electronics

Hand protection

This is not a toy

Life threat

Shattering risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - power drop
MW 45x25 / N38

Table 2: Shear force (wall)
MW 45x25 / N38

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

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 45x25 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold
MW 45x25 / N38

Table 6: Two magnets (attraction) - field collision
MW 45x25 / N38

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

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

Table 9: Corrosion resistance
MW 45x25 / N38

Table 10: Construction data (P_c)
MW 45x25 / N38

Table 11: Underwater work (magnet fishing)
MW 45x25 / N38