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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

view properties »

101.55 ZŁ with VAT / pcs + price for transport

82.56 ZŁ net + 23% VAT / pcs

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Technical details - 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

Physical modeling of the assembly - report

Presented data are the direct effect of a engineering calculation. Results were calculated on models for the class Nd₂Fe₁₄B. Actual parameters might slightly differ. Treat these data as a supplementary guide for designers.

Table 1: Static pull force (force vs gap) - 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	crushing
1 mm	4413 Gs 441.3 mT	61.79 kg / 136.23 LBS 61791.4 g / 606.2 N	crushing
2 mm	4214 Gs 421.4 mT	56.35 kg / 124.22 LBS 56345.9 g / 552.8 N	crushing
3 mm	4014 Gs 401.4 mT	51.11 kg / 112.68 LBS 51112.0 g / 501.4 N	crushing
5 mm	3615 Gs 361.5 mT	41.47 kg / 91.42 LBS 41466.0 g / 406.8 N	crushing
10 mm	2697 Gs 269.7 mT	23.08 kg / 50.89 LBS 23083.9 g / 226.5 N	crushing
15 mm	1965 Gs 196.5 mT	12.25 kg / 27.00 LBS 12247.0 g / 120.1 N	crushing
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	weak grip
50 mm	285 Gs 28.5 mT	0.26 kg / 0.57 LBS 257.0 g / 2.5 N	weak grip

Magnetic force drops sharply with every mm of distance. Remember that even a microscopic distance (e.g., contamination, paint, veneer) noticeably reduces the pull force. Magnets operate strongest at the point of direct contact; distance drastically cuts the force. See how quickly the pull force fall, when the magnet does not adhere flatly to the steel surface. When planning the mounting, avoid unnecessary gaps.

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 following data calculates the estimated shear load necessary to initiate the downward movement of the magnet vertically against a upright metal surface (considering standard friction). This parameter depends on the separation distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - vertical pull
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 upright wall (e.g., a car body), it you can count on just approx. 20%-30% of its nominal power. Gravity and a weak degree of grip mean that products slip faster than they pull off. Want to create a wall mount? Note that the shear force is much weaker than the perpendicular breakaway force. On a smooth steel, the magnet will slide down under a significantly smaller load. Utilizing a rubberized coating can drastically increase the grip.

Table 4: Steel thickness (substrate influence) - power losses
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 too thin steel is unable to conduct the entire magnetic field, which weakens actual performance of the holder. If you mount a strong magnet to a too thin substrate, the field will pass right through and the attraction force will be weaker. To achieve full efficiency of this neodymium's power, you need a suitably thick element of metal. The saturation phenomenon causes that on sheet metal structures (e.g., car bodies), the holder shows lower pull force. We recommend selecting the steel cross-section based on the following data.

Table 5: Thermal stability (material behavior) - thermal limit
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 change their properties parameters after exceeding the maximum temperature. Protect against heat – excessive heat can permanently destroy this magnet. With every degree above norm, the magnet's power temporarily drops. Refrain from using this product close to heaters higher than its safe range. Exceeding the critical threshold will cause permanent loss of magnetic properties.

*Technical advisory: Thermal stability is determined by both grade, and the Permeance Coefficient Pc. Thin magnets (pancake types) are more susceptible to demagnetization sooner compared to rod magnets. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - field range
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 strong neodymiums interact from a much further distance than a magnet and sheet setup. Such a system of two magnets creates a more powerful interaction and a further horizon of performance. Want to build a powerful holder? Apply two magnets instead of a neodymium and a striker plate. Be careful that when connecting a pair of magnets, the impact force is extreme. The repulsion force is a bit weaker than the connection force, but still impressive.
*Field value in repulsion mode drops to ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Note: Estimates refer to shear force of a pair of matching magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (electronics) - warnings
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
Phone / Smartphone	40 Gs (4.0 mT)	11.5 cm
Car key	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

Powerful magnet radiation is a large risk to electronics and pacemakers. These NdFeB products generate a field that prevents correct functioning of sensitive medical devices. Remember: the invisible magnetic field acts through matter and housings. Increased vigilance must be exercised by people with cochlear implants and drug dispensers. Influence will be felt by: mechanical watches, remotes, membranes, and displays. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - 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

Neodymium magnets are prone to chipping – a violent impact against metal risks their cracking. Control the attraction moment – a neodymium left loose speeds with massive force. Kinetic force can destroy the magnet or dangerous crushing to fingers. Always hold the magnet during installation so it doesn't hit with great force against the steel surface. A collision at high speed means shattering of the magnet. Use safety goggles when handling with powerful specimens.

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)

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: 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 for generator designers as well as sensors. The P_c coefficient defines the magnet's operating point.

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%

Corrosion 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. Buoyancy helps in lifting finds.

1. Sliding resistance

*Note: On a vertical wall, the magnet retains just approx. 20-30% of its max power.

2. Plate thickness effect

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

3. Power loss vs temp

*For N38 material, the critical 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.

Technical and environmental data

Elemental analysis

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

Measurement Calculator

Pulling force

Newtons (N)

Pounds (lbs)

Field Strength

Induction (Gs)

Induction (T)

Input your figure into any field, and the remaining fields will convert instantly.

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The presented product is an exceptionally strong rod magnet, composed of advanced NdFeB material, which, with dimensions of Ø45x25 mm, guarantees optimal power. This specific item boasts high dimensional repeatability and industrial build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with significant force (approx. 67.33 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

This model is ideal for building generators, advanced Hall effect sensors, and efficient magnetic separators, where field concentration 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 miniature devices and wherever low weight is crucial.

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 long-term durability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.

Grade N38 is the most popular standard for industrial neodymium magnets, offering a great economic balance and operational stability. 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.

This model is characterized by dimensions Ø45x25 mm, which, at a weight of 298.21 g, makes it an element with high magnetic energy density. 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 secures it 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 45 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 diametrically if your project requires it.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Benefits

In addition to their long-term stability, neodymium magnets provide the following advantages:

They have unchanged lifting capacity, and over nearly 10 years their performance decreases symbolically – ~1% (in testing),
They do not lose their magnetic properties even under strong external field,
In other words, due to the metallic finish of nickel, the element gains visual value,
Magnets possess exceptionally strong magnetic induction on the outer side,
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 precise machining as well as adjusting to specific requirements,
Wide application in electronics industry – they are commonly used in computer drives, brushless drives, medical equipment, as well as other advanced devices.
Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Weaknesses

What to avoid - cons of neodymium magnets and ways of using them

To avoid cracks under impact, we suggest using special steel holders. Such a solution secures the magnet and simultaneously improves 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 and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
We suggest casing - magnetic holder, due to difficulties in producing nuts inside the magnet and complicated shapes.
Health risk resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child safety. It is also worth noting that small elements of these products are able to complicate diagnosis medical in case of swallowing.
With mass production the cost of neodymium magnets can be a barrier,

Pull force analysis

Magnetic strength at its maximum – what affects it?

The force parameter is a measurement result performed under the following configuration:

using a plate made of high-permeability steel, serving as a ideal flux conductor
with a cross-section no less than 10 mm
characterized by even structure
with direct contact (no impurities)
under perpendicular application of breakaway force (90-degree angle)
in temp. approx. 20°C

Impact of factors on magnetic holding capacity in practice

It is worth knowing that the working load will differ influenced by elements below, starting with the most relevant:

Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
Pull-off angle – note that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
Metal type – different alloys attracts identically. Alloy additives weaken the interaction with the magnet.
Smoothness – full contact is possible only on smooth steel. Rough texture create air cushions, weakening the magnet.
Heat – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity was assessed by applying a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the lifting capacity.

Precautions when working with neodymium magnets

Medical implants

Life threat: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Choking Hazard

Product intended for adults. Small elements pose a choking risk, causing severe trauma. Keep away from kids and pets.

Mechanical processing

Dust produced during machining of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Crushing force

Protect your hands. Two powerful magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!

Magnetic media

Equipment safety: Strong magnets can damage data carriers and sensitive devices (heart implants, medical aids, timepieces).

Heat warning

Regular neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. The loss of strength is permanent.

GPS and phone interference

A strong magnetic field interferes with the functioning of compasses in phones and GPS navigation. Maintain magnets close to a device to prevent damaging the sensors.

Magnet fragility

NdFeB magnets are ceramic materials, meaning they are very brittle. Impact of two magnets leads to them breaking into shards.

Nickel allergy

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If an allergic reaction happens, cease handling magnets and use protective gear.

Caution required

Before use, read the rules. Sudden snapping can break the magnet or injure your hand. Be predictive.

Safety First! Looking for details? Check our post: Are neodymium magnets dangerous?

MW 45x25 / N38 - cylindrical magnet

Technical details - MW 45x25 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the assembly - report

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

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

Table 3: Wall mounting (sliding) - vertical pull MW 45x25 / N38

Table 4: Steel thickness (substrate influence) - power losses MW 45x25 / N38

Table 5: Thermal stability (material behavior) - thermal limit MW 45x25 / N38

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

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

Table 8: Impact energy (kinetic energy) - warning 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. Sliding resistance

2. Plate thickness effect

3. Power loss vs temp

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

Elemental analysis

Sustainability

Pulling force

Field Strength

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Advantages and disadvantages of Nd2Fe14B magnets.

Benefits

Weaknesses

Pull force analysis

Magnetic strength at its maximum – what affects it?

Impact of factors on magnetic holding capacity in practice

Precautions when working with neodymium magnets

Medical implants

Choking Hazard

Mechanical processing

Crushing force

Magnetic media

Heat warning

GPS and phone interference

Magnet fragility

Nickel allergy

Caution required

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

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

Table 3: Wall mounting (sliding) - vertical pull
MW 45x25 / N38

Table 4: Steel thickness (substrate influence) - power losses
MW 45x25 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MW 45x25 / N38

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

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

Table 8: Impact energy (kinetic energy) - warning
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

Advantages and disadvantages of Nd₂Fe₁₄B magnets.