Product available Ships tomorrow

MW 25x12 / 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 010502

GTIN/EAN: 5906301814986

5.00

Diameter Ø

25 mm [±0,1 mm]

Height

12 mm [±0,1 mm]

Weight

44.18 g

Magnetization Direction

↑ axial

Load capacity

19.60 kg / 192.25 N

Magnetic Induction

429.18 mT / 4292 Gs

Coating

[NiCuNi] Nickel

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16.64 ZŁ with VAT / pcs + price for transport

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Technical specification of the product - MW 25x12 / N38 - cylindrical magnet

Specification / characteristics - MW 25x12 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010502
GTIN/EAN	5906301814986
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	25 mm [±0,1 mm]
Height	12 mm [±0,1 mm]
Weight	44.18 g
Magnetization Direction	↑ axial
Load capacity ~ ?	19.60 kg / 192.25 N
Magnetic Induction ~ ?	429.18 mT / 4292 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 25x12 / N38 - cylindrical magnet

properties	values	units
remenance Br [min. - max.] ?	12.2-12.6	kGs
remenance Br [min. - max.] ?	1220-1260	mT
coercivity bHc ?	10.8-11.5	kOe
coercivity bHc ?	860-915	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	36-38	BH max MGOe
energy density [min. - max.] ?	287-303	BH max KJ/m
max. temperature ?	≤ 80	°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	312 - 380	°C
Curie Temperature TF	593 - 716	°F
Specific resistance	150	μΩ⋅cm
Bending strength	250	MPa
Compressive strength	1000~1100	MPa
Thermal expansion parallel (∥) to orientation (M)	(3-4) x 10^-6	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10^-6	°C^-1
Young's modulus	1.7 x 10⁴	kg/mm²

Engineering analysis of the product - report

Presented information represent the outcome of a mathematical calculation. Values are based on models for the class Nd₂Fe₁₄B. Actual conditions may differ from theoretical values. Use these calculations as a supplementary guide during assembly planning.

Table 1: Static force (pull vs distance) - characteristics
MW 25x12 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4291 Gs 429.1 mT	19.60 kg / 43.21 lbs 19600.0 g / 192.3 N	dangerous!
1 mm	3975 Gs 397.5 mT	16.82 kg / 37.08 lbs 16820.5 g / 165.0 N	dangerous!
2 mm	3645 Gs 364.5 mT	14.15 kg / 31.19 lbs 14147.5 g / 138.8 N	dangerous!
3 mm	3316 Gs 331.6 mT	11.71 kg / 25.81 lbs 11707.5 g / 114.9 N	dangerous!
5 mm	2692 Gs 269.2 mT	7.72 kg / 17.02 lbs 7718.0 g / 75.7 N	medium risk
10 mm	1518 Gs 151.8 mT	2.45 kg / 5.41 lbs 2451.8 g / 24.1 N	medium risk
15 mm	863 Gs 86.3 mT	0.79 kg / 1.75 lbs 793.5 g / 7.8 N	safe
20 mm	517 Gs 51.7 mT	0.29 kg / 0.63 lbs 285.1 g / 2.8 N	safe
30 mm	219 Gs 21.9 mT	0.05 kg / 0.11 lbs 51.2 g / 0.5 N	safe
50 mm	63 Gs 6.3 mT	0.00 kg / 0.01 lbs 4.2 g / 0.0 N	safe

Magnetic force decreases drastically per each millimeter of distance. Note that even a very thin break (e.g., contamination, paint, rust) noticeably diminishes the holding power. Magnets operate optimally at the point of direct contact; air break weakens the power. See how flashily the pull force drop, when the product does not adhere tightly to the metal substrate. When calculating the arrangement, eliminate redundant distances.

Table 2: Sliding force (wall)
MW 25x12 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	3.92 kg / 8.64 lbs 3920.0 g / 38.5 N
1 mm	Stal (~0.2)	3.36 kg / 7.42 lbs 3364.0 g / 33.0 N
2 mm	Stal (~0.2)	2.83 kg / 6.24 lbs 2830.0 g / 27.8 N
3 mm	Stal (~0.2)	2.34 kg / 5.16 lbs 2342.0 g / 23.0 N
5 mm	Stal (~0.2)	1.54 kg / 3.40 lbs 1544.0 g / 15.1 N
10 mm	Stal (~0.2)	0.49 kg / 1.08 lbs 490.0 g / 4.8 N
15 mm	Stal (~0.2)	0.16 kg / 0.35 lbs 158.0 g / 1.5 N
20 mm	Stal (~0.2)	0.06 kg / 0.13 lbs 58.0 g / 0.6 N
30 mm	Stal (~0.2)	0.01 kg / 0.02 lbs 10.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

This section defines the approximate weight limit required to initiate the slippage of the magnet vertically on a vertical metal surface (considering typical friction). This parameter varies with the distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 25x12 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	5.88 kg / 12.96 lbs 5880.0 g / 57.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	3.92 kg / 8.64 lbs 3920.0 g / 38.5 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.96 kg / 4.32 lbs 1960.0 g / 19.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	9.80 kg / 21.61 lbs 9800.0 g / 96.1 N

When hanging a magnet on a vertical plane (e.g., a fridge), it will only hold just about 20%-30% of its maximum pull force. Gravity and a weak degree of grip cause that products slide down easier than they detach. Designing a wall mount? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the element will slip down under a much lighter weight. Using a rubber pad can significantly improve the result.

Table 4: Steel thickness (saturation) - power losses
MW 25x12 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.98 kg / 2.16 lbs 980.0 g / 9.6 N
1 mm	13%	2.45 kg / 5.40 lbs 2450.0 g / 24.0 N
2 mm	25%	4.90 kg / 10.80 lbs 4900.0 g / 48.1 N
3 mm	38%	7.35 kg / 16.20 lbs 7350.0 g / 72.1 N
5 mm	63%	12.25 kg / 27.01 lbs 12250.0 g / 120.2 N
10 mm	100%	19.60 kg / 43.21 lbs 19600.0 g / 192.3 N
11 mm	100%	19.60 kg / 43.21 lbs 19600.0 g / 192.3 N
12 mm	100%	19.60 kg / 43.21 lbs 19600.0 g / 192.3 N

A too thin steel is not enough to focus the full magnetic flux, which squanders power of the magnet. If you install a neodymium to a thin surface, the magnetism will penetrate right through and the attraction force will be weaker. To utilize full efficiency of this magnet's potential, you need a suitably thick element of steel. The saturation phenomenon means that on thin elements (e.g., appliance housings), the magnet shows lower pull force. We advise picking the steel dimension based on the following data.

Table 5: Thermal resistance (stability) - resistance threshold
MW 25x12 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	19.60 kg / 43.21 lbs 19600.0 g / 192.3 N	OK
40 °C	-2.2%	19.17 kg / 42.26 lbs 19168.8 g / 188.0 N	OK
60 °C	-4.4%	18.74 kg / 41.31 lbs 18737.6 g / 183.8 N
80 °C	-6.6%	18.31 kg / 40.36 lbs 18306.4 g / 179.6 N
100 °C	-28.8%	13.96 kg / 30.77 lbs 13955.2 g / 136.9 N

Standard neodymium magnets change their properties parameters past the thermal threshold. Avoid high temperatures – excessive heat can permanently damage this magnet. With increasing heat, the magnet's power temporarily lowers. Refrain from using this product near heat sources exceeding its safe range. Exceeding the critical threshold will lead to destruction of magnetism.

*Technical advisory: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (pancake types) are more susceptible to demagnetization sooner than taller cylinders. Warning indicator in the table signals permanent field degradation for this particular item.

Table 6: Two magnets (attraction) - field range
MW 25x12 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	55.71 kg / 122.82 lbs 5 494 Gs	8.36 kg / 18.42 lbs 8357 g / 82.0 N	N/A
1 mm	51.78 kg / 114.14 lbs 8 273 Gs	7.77 kg / 17.12 lbs 7766 g / 76.2 N	46.60 kg / 102.73 lbs ~0 Gs
2 mm	47.81 kg / 105.40 lbs 7 949 Gs	7.17 kg / 15.81 lbs 7172 g / 70.4 N	43.03 kg / 94.86 lbs ~0 Gs
3 mm	43.94 kg / 96.88 lbs 7 621 Gs	6.59 kg / 14.53 lbs 6592 g / 64.7 N	39.55 kg / 87.19 lbs ~0 Gs
5 mm	36.65 kg / 80.80 lbs 6 960 Gs	5.50 kg / 12.12 lbs 5497 g / 53.9 N	32.98 kg / 72.72 lbs ~0 Gs
10 mm	21.94 kg / 48.36 lbs 5 385 Gs	3.29 kg / 7.25 lbs 3291 g / 32.3 N	19.74 kg / 43.53 lbs ~0 Gs
20 mm	6.97 kg / 15.36 lbs 3 035 Gs	1.05 kg / 2.30 lbs 1045 g / 10.3 N	6.27 kg / 13.83 lbs ~0 Gs
50 mm	0.33 kg / 0.72 lbs 657 Gs	0.05 kg / 0.11 lbs 49 g / 0.5 N	0.29 kg / 0.65 lbs ~0 Gs
60 mm	0.15 kg / 0.32 lbs 439 Gs	0.02 kg / 0.05 lbs 22 g / 0.2 N	0.13 kg / 0.29 lbs ~0 Gs
70 mm	0.07 kg / 0.16 lbs 306 Gs	0.01 kg / 0.02 lbs 11 g / 0.1 N	0.06 kg / 0.14 lbs ~0 Gs
80 mm	0.04 kg / 0.08 lbs 221 Gs	0.01 kg / 0.01 lbs 6 g / 0.1 N	0.03 kg / 0.07 lbs ~0 Gs
90 mm	0.02 kg / 0.05 lbs 165 Gs	0.00 kg / 0.01 lbs 3 g / 0.0 N	0.02 kg / 0.04 lbs ~0 Gs
100 mm	0.01 kg / 0.03 lbs 126 Gs	0.00 kg / 0.00 lbs 2 g / 0.0 N	0.01 kg / 0.02 lbs ~0 Gs

Two strong neodymiums attract each other from a much further distance than a neodymium and metal setup. The connection of magnet-to-magnet generates a stronger field and a further horizon of operation. Planning to create a solid fastener? Use a pair of magnets instead of one magnet and a striker plate. Exercise caution that when bringing together two magnets, the pinch force is massive. The repulsion force is slightly lower than the attraction, but still large.
*Flux density for N-N configuration reaches ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
* Figures apply to shear force of a pair of matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (implants) - warnings
MW 25x12 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	13.0 cm
Hearing aid	10 Gs (1.0 mT)	10.0 cm
Mechanical watch	20 Gs (2.0 mT)	8.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	6.0 cm
Remote	50 Gs (5.0 mT)	5.5 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

A strong magnetic field is a large risk to electronic devices as well as medical implants. These magnets produce a field that destroys function of sensitive medical devices. Notice: the invisible magnetic field passes through tissues and plastic. Exceptional care must be exercised by people with hearing aids and drug dispensers. Influence will be felt by: automatic timepieces, car keys, speakers, and screens. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - warning
MW 25x12 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.84 km/h (6.35 m/s)	0.89 J
30 mm	36.85 km/h (10.24 m/s)	2.31 J
50 mm	47.51 km/h (13.20 m/s)	3.85 J
100 mm	67.17 km/h (18.66 m/s)	7.69 J

Magnetic elements are prone to chipping – a violent impact against metal can result in shattering. Watch the impact speed – a magnet released freely becomes dangerous. Striking energy can destroy the magnet or dangerous crushing to fingers. Be sure to control the product during bringing near metal so it doesn't hit violently against the steel surface. A collision at high speed almost guarantees destruction of the neodymium. Use safety goggles when working with powerful specimens.

Table 9: Surface protection spec
MW 25x12 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

Neodymium magnets are highly susceptible to corrosion without proper protection. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (P_c)
MW 25x12 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	21 413 Mx	214.1 µWb
P_c Coefficient	0.57	Low (Flat)

Flux value passing through the pole surface. Key data when building generators and motors. The P_c coefficient determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 25x12 / N38

Environment	Effective steel pull	Effect
Air (land)	19.60 kg	Standard
Water (riverbed)	22.44 kg (+2.84 kg buoyancy gain)	+14.5%

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

Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Sliding resistance

*Warning: On a vertical wall, the magnet holds merely approx. 20-30% of its max power.

2. Efficiency vs thickness

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

3. Heat tolerance

*For N38 material, 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) = 0.57

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 specification and ecology

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: 010502-2026

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This product is an extremely powerful cylinder magnet, produced from durable NdFeB material, which, at dimensions of Ø25x12 mm, guarantees maximum efficiency. The MW 25x12 / N38 model boasts high dimensional repeatability and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 19.60 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Additionally, its Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 192.25 N with a weight of only 44.18 g, this cylindrical magnet 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., 25.1 mm) using epoxy glues. To ensure long-term durability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø25x12), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

The presented product is a neodymium magnet with precisely defined parameters: diameter 25 mm and height 12 mm. The key parameter here is the holding force amounting to approximately 19.60 kg (force ~192.25 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 12 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is standard 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 through the diameter if your project requires it.

Strengths as well as weaknesses of neodymium magnets.

Strengths

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

They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (according to literature),
They feature excellent resistance to weakening of magnetic properties as a result of opposing magnetic fields,
Thanks to the shiny finish, the surface of nickel, gold, or silver gives an visually attractive appearance,
Magnetic induction on the working layer of the magnet turns out to be exceptional,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
Thanks to versatility in forming and the capacity to adapt to unusual requirements,
Versatile presence in advanced technology sectors – they are commonly used in computer drives, drive modules, medical equipment, and other advanced devices.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Disadvantages of NdFeB magnets:

They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
Due to limitations in creating nuts and complicated forms in magnets, we recommend using a housing - magnetic mechanism.
Health risk resulting from small fragments of magnets can be dangerous, if swallowed, which gains importance in the context of child health protection. Furthermore, tiny parts of these products can disrupt the diagnostic process medical when they are in the body.
With budget limitations the cost of neodymium magnets is economically unviable,

Holding force characteristics

Maximum holding power of the magnet – what contributes to it?

The lifting capacity listed is a result of laboratory testing conducted under standard conditions:

with the application of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
possessing a thickness of at least 10 mm to avoid saturation
characterized by even structure
with total lack of distance (no coatings)
for force acting at a right angle (in the magnet axis)
in neutral thermal conditions

Determinants of lifting force in real conditions

It is worth knowing that the application force will differ influenced by the following factors, starting with the most relevant:

Clearance – existence of foreign body (paint, dirt, air) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
Material composition – not every steel reacts the same. High carbon content worsen the attraction effect.
Surface finish – full contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Temperature – temperature increase results in weakening of induction. Check the maximum operating temperature for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.

H&S for magnets

Phone sensors

A powerful magnetic field disrupts the operation of magnetometers in smartphones and navigation systems. Keep magnets close to a smartphone to avoid damaging the sensors.

No play value

Product intended for adults. Small elements pose a choking risk, leading to severe trauma. Keep out of reach of kids and pets.

Serious injuries

Mind your fingers. Two large magnets will join immediately with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!

Pacemakers

Individuals with a ICD have to maintain an large gap from magnets. The magnetic field can disrupt the operation of the life-saving device.

Threat to electronics

Powerful magnetic fields can destroy records on payment cards, HDDs, and other magnetic media. Stay away of min. 10 cm.

Operating temperature

Do not overheat. NdFeB magnets are susceptible to temperature. If you need resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

Risk of cracking

Despite the nickel coating, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.

Skin irritation risks

It is widely known that nickel (standard magnet coating) is a potent allergen. If your skin reacts to metals, avoid direct skin contact and opt for coated magnets.

Powerful field

Exercise caution. Neodymium magnets attract from a long distance and connect with massive power, often quicker than you can react.

Dust explosion hazard

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

Caution! Need more info? Read our article: Why are neodymium magnets dangerous?

MW 25x12 / N38 - cylindrical magnet

Technical specification of the product - MW 25x12 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the product - report

Table 1: Static force (pull vs distance) - characteristics MW 25x12 / N38

Table 2: Sliding force (wall) MW 25x12 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MW 25x12 / N38

Table 4: Steel thickness (saturation) - power losses MW 25x12 / N38

Table 5: Thermal resistance (stability) - resistance threshold MW 25x12 / N38

Table 6: Two magnets (attraction) - field range MW 25x12 / N38

Table 7: Safety (HSE) (implants) - warnings MW 25x12 / N38

Table 8: Impact energy (kinetic energy) - warning MW 25x12 / N38

Table 9: Surface protection spec MW 25x12 / N38

Table 10: Electrical data (Pc) MW 25x12 / N38

Table 11: Underwater work (magnet fishing) MW 25x12 / N38

1. Sliding resistance

2. Efficiency vs thickness

3. Heat tolerance

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

Material specification

Environmental data

Force (pull)

Field Strength

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Strengths as well as weaknesses of neodymium magnets.

Strengths

Disadvantages

Holding force characteristics

Maximum holding power of the magnet – what contributes to it?

Determinants of lifting force in real conditions

H&S for magnets

Phone sensors

No play value

Serious injuries

Pacemakers

Threat to electronics

Operating temperature

Risk of cracking

Skin irritation risks

Powerful field

Dust explosion hazard

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - characteristics
MW 25x12 / N38

Table 2: Sliding force (wall)
MW 25x12 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 25x12 / N38

Table 4: Steel thickness (saturation) - power losses
MW 25x12 / N38

Table 5: Thermal resistance (stability) - resistance threshold
MW 25x12 / N38

Table 6: Two magnets (attraction) - field range
MW 25x12 / N38

Table 7: Safety (HSE) (implants) - warnings
MW 25x12 / N38

Table 8: Impact energy (kinetic energy) - warning
MW 25x12 / N38

Table 9: Surface protection spec
MW 25x12 / N38

Table 10: Electrical data (P_c)
MW 25x12 / N38

Table 11: Underwater work (magnet fishing)
MW 25x12 / N38