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MW 25x5 / 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 010049

GTIN/EAN: 5906301810483

5.00

Diameter Ø

25 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

18.41 g

Magnetization Direction

↑ axial

Load capacity

7.98 kg / 78.25 N

Magnetic Induction

230.20 mT / 2302 Gs

Coating

[NiCuNi] Nickel

check technical data »

8.39 ZŁ with VAT / pcs + price for transport

6.82 ZŁ net + 23% VAT / pcs

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Physical properties - MW 25x5 / N38 - cylindrical magnet

Specification / characteristics - MW 25x5 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010049
GTIN/EAN	5906301810483
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	5 mm [±0,1 mm]
Weight	18.41 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.98 kg / 78.25 N
Magnetic Induction ~ ?	230.20 mT / 2302 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 25x5 / 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 magnet - technical parameters

Presented values are the direct effect of a engineering calculation. Results rely on algorithms for the class Nd₂Fe₁₄B. Real-world conditions may differ from theoretical values. Use these data as a reference point during assembly planning.

Table 1: Static pull force (force vs gap) - characteristics
MW 25x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2302 Gs 230.2 mT	7.98 kg / 17.59 pounds 7980.0 g / 78.3 N	warning
1 mm	2189 Gs 218.9 mT	7.21 kg / 15.91 pounds 7214.9 g / 70.8 N	warning
2 mm	2050 Gs 205.0 mT	6.33 kg / 13.95 pounds 6329.3 g / 62.1 N	warning
3 mm	1895 Gs 189.5 mT	5.41 kg / 11.93 pounds 5410.7 g / 53.1 N	warning
5 mm	1570 Gs 157.0 mT	3.72 kg / 8.19 pounds 3715.4 g / 36.4 N	warning
10 mm	890 Gs 89.0 mT	1.19 kg / 2.63 pounds 1192.8 g / 11.7 N	weak grip
15 mm	495 Gs 49.5 mT	0.37 kg / 0.81 pounds 368.5 g / 3.6 N	weak grip
20 mm	288 Gs 28.8 mT	0.12 kg / 0.28 pounds 124.8 g / 1.2 N	weak grip
30 mm	116 Gs 11.6 mT	0.02 kg / 0.04 pounds 20.2 g / 0.2 N	weak grip
50 mm	31 Gs 3.1 mT	0.00 kg / 0.00 pounds 1.4 g / 0.0 N	weak grip

Grip strength decreases drastically with every mm of distance. Keep in mind that every additional insulation layer (e.g., contamination, paint, dust) significantly weakens the grip. Magnets work most effectively during direct contact; distance kills the power. Observe how quickly the pull force fall, when the magnet does not touch tightly to the metal substrate. When calculating the assembly, discard additional spacers.

Table 2: Slippage hold (wall)
MW 25x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.60 kg / 3.52 pounds 1596.0 g / 15.7 N
1 mm	Stal (~0.2)	1.44 kg / 3.18 pounds 1442.0 g / 14.1 N
2 mm	Stal (~0.2)	1.27 kg / 2.79 pounds 1266.0 g / 12.4 N
3 mm	Stal (~0.2)	1.08 kg / 2.39 pounds 1082.0 g / 10.6 N
5 mm	Stal (~0.2)	0.74 kg / 1.64 pounds 744.0 g / 7.3 N
10 mm	Stal (~0.2)	0.24 kg / 0.52 pounds 238.0 g / 2.3 N
15 mm	Stal (~0.2)	0.07 kg / 0.16 pounds 74.0 g / 0.7 N
20 mm	Stal (~0.2)	0.02 kg / 0.05 pounds 24.0 g / 0.2 N
30 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

This section defines the estimated shear load needed to cause the sliding of the magnet down against a vertical steel wall (considering standard friction). The holding force is relative to the distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 25x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.39 kg / 5.28 pounds 2394.0 g / 23.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.60 kg / 3.52 pounds 1596.0 g / 15.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.80 kg / 1.76 pounds 798.0 g / 7.8 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.99 kg / 8.80 pounds 3990.0 g / 39.1 N

When mounting a holder on a upright wall (e.g., a car body), it will only hold just approx. 20%-30% of its maximum pull force. Gravity as well as a weak degree of grip cause that products slide down easier than they pull off. Planning a vertical fastening? Remember that the sliding force is significantly lower than the perpendicular breakaway force. On a smooth steel, the element will slide down under a noticeably lighter weight. Utilizing a rubberized pad can drastically improve the result.

Table 4: Material efficiency (substrate influence) - power losses
MW 25x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.80 kg / 1.76 pounds 798.0 g / 7.8 N
1 mm	25%	2.00 kg / 4.40 pounds 1995.0 g / 19.6 N
2 mm	50%	3.99 kg / 8.80 pounds 3990.0 g / 39.1 N
3 mm	75%	5.99 kg / 13.19 pounds 5985.0 g / 58.7 N
5 mm	100%	7.98 kg / 17.59 pounds 7980.0 g / 78.3 N
10 mm	100%	7.98 kg / 17.59 pounds 7980.0 g / 78.3 N
11 mm	100%	7.98 kg / 17.59 pounds 7980.0 g / 78.3 N
12 mm	100%	7.98 kg / 17.59 pounds 7980.0 g / 78.3 N

A too thin steel cannot focus the full magnetic flux, which squanders power of the holder. If you attach a powerful product to a too thin substrate, the magnetism will penetrate right through and the holding will be smaller. To achieve 100% of this neodymium's potential, you require a sufficiently solid piece of metal. The material oversaturation means that on sheet metal structures (e.g., thin profiles), the product works worse. We advise picking the steel cross-section according to the table below.

Table 5: Thermal resistance (material behavior) - power drop
MW 25x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.98 kg / 17.59 pounds 7980.0 g / 78.3 N	OK
40 °C	-2.2%	7.80 kg / 17.21 pounds 7804.4 g / 76.6 N	OK
60 °C	-4.4%	7.63 kg / 16.82 pounds 7628.9 g / 74.8 N
80 °C	-6.6%	7.45 kg / 16.43 pounds 7453.3 g / 73.1 N
100 °C	-28.8%	5.68 kg / 12.53 pounds 5681.8 g / 55.7 N

Ordinary NdFeB products lose parameters after exceeding the maximum temperature. Avoid high temperatures – heat can irreversibly demagnetize this product. With every degree above norm, the magnet's power momentarily decreases. Do not use this magnet in hot environments higher than its working range. Ignoring the limit will cause permanent loss of magnetism.

*Engineering note: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (low permeance coefficient) are more susceptible to demagnetization under lower heat stress than long magnets. Red status in the table indicates a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - field range
MW 25x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	16.03 kg / 35.34 pounds 3 871 Gs	2.40 kg / 5.30 pounds 2405 g / 23.6 N	N/A
1 mm	15.31 kg / 33.75 pounds 4 498 Gs	2.30 kg / 5.06 pounds 2296 g / 22.5 N	13.78 kg / 30.38 pounds ~0 Gs
2 mm	14.49 kg / 31.95 pounds 4 377 Gs	2.17 kg / 4.79 pounds 2174 g / 21.3 N	13.05 kg / 28.76 pounds ~0 Gs
3 mm	13.62 kg / 30.03 pounds 4 243 Gs	2.04 kg / 4.50 pounds 2043 g / 20.0 N	12.26 kg / 27.03 pounds ~0 Gs
5 mm	11.79 kg / 26.00 pounds 3 948 Gs	1.77 kg / 3.90 pounds 1769 g / 17.4 N	10.61 kg / 23.40 pounds ~0 Gs
10 mm	7.46 kg / 16.46 pounds 3 141 Gs	1.12 kg / 2.47 pounds 1120 g / 11.0 N	6.72 kg / 14.81 pounds ~0 Gs
20 mm	2.40 kg / 5.28 pounds 1 780 Gs	0.36 kg / 0.79 pounds 359 g / 3.5 N	2.16 kg / 4.75 pounds ~0 Gs
50 mm	0.10 kg / 0.21 pounds 355 Gs	0.01 kg / 0.03 pounds 14 g / 0.1 N	0.09 kg / 0.19 pounds ~0 Gs
60 mm	0.04 kg / 0.09 pounds 231 Gs	0.01 kg / 0.01 pounds 6 g / 0.1 N	0.04 kg / 0.08 pounds ~0 Gs
70 mm	0.02 kg / 0.04 pounds 158 Gs	0.00 kg / 0.01 pounds 3 g / 0.0 N	0.02 kg / 0.04 pounds ~0 Gs
80 mm	0.01 kg / 0.02 pounds 112 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.01 kg / 0.01 pounds 82 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.01 pounds 62 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnetic products interact from a much further distance than a magnet and steel combination. The connection of magnet-to-magnet creates a more powerful interaction and a further horizon of performance. Designing a solid fastener? Apply two magnets instead of a neodymium and a striker plate. Remember that when attracting two neodymiums, the collision energy is extreme. The repulsion force is marginally weaker than the attraction, but still impressive.
*Field value in repulsion mode drops to ~0 Gs in the exact middle of the gap (due to field cancellation).
Note: Results show sliding force of dual matching magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - warnings
MW 25x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	10.0 cm
Hearing aid	10 Gs (1.0 mT)	8.0 cm
Timepiece	20 Gs (2.0 mT)	6.0 cm
Mobile device	40 Gs (4.0 mT)	5.0 cm
Car key	50 Gs (5.0 mT)	4.5 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

A strong magnetic field is a large risk to IT equipment as well as medical implants. These neodymiums produce a flux that prevents correct functioning of digital equipment. Notice: the invisible magnetic field passes through tissues and plastic. Special caution must be taken by people with hearing aids and drug dispensers. The risk also applies to: mechanical watches, remotes, membranes, and displays. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (cracking risk) - collision effects
MW 25x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.87 km/h (6.35 m/s)	0.37 J
30 mm	36.43 km/h (10.12 m/s)	0.94 J
50 mm	46.96 km/h (13.04 m/s)	1.57 J
100 mm	66.40 km/h (18.44 m/s)	3.13 J

Neodymium magnets are prone to chipping – a strong collision with metal risks their cracking. Control the attraction moment – a magnet released freely speeds with massive force. Kinetic force can destroy the magnet or painful pinches to fingers. Always hold the magnet during bringing near metal 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 working with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 25x5 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (P_c)
MW 25x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	13 107 Mx	131.1 µWb
P_c Coefficient	0.29	Low (Flat)

Flux value emitted by the magnet pole. Essential parameter for generator designers and motors. The P_c coefficient determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 25x5 / N38

Environment	Effective steel pull	Effect
Air (land)	7.98 kg	Standard
Water (riverbed)	9.14 kg (+1.16 kg buoyancy gain)	+14.5%

Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

*Note: On a vertical surface, the magnet retains just ~20% of its nominal pull.

2. Efficiency vs thickness

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

3. Temperature resistance

*For N38 grade, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.29

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

Chemical composition

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: 010049-2026

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MW 12x4 / N38 - cylindrical magnet

1.353 ZŁ brutto / pcs

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245.00 ZŁ brutto / pcs

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MW 18.9x10 / N38 - cylindrical magnet

11.07 ZŁ brutto / pcs

This product is a very strong rod magnet, composed of advanced NdFeB material, which, with dimensions of Ø25x5 mm, guarantees optimal power. This specific item boasts high dimensional repeatability and professional build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 7.98 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, guaranteeing an aesthetic appearance and durability for years.

It finds application in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 78.25 N with a weight of only 18.41 g, this rod is indispensable in electronics and wherever low weight is crucial.

Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 25.1 mm) using two-component epoxy glues. 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 high repeatability of the connection.

Magnets N38 are strong enough for the majority of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø25x5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

This model is characterized by dimensions Ø25x5 mm, which, at a weight of 18.41 g, makes it an element with high magnetic energy density. The value of 78.25 N means that the magnet is capable of holding a weight many times exceeding its own mass of 18.41 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 5 mm), which means that the N and S poles are located on the flat, circular surfaces. 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 diametrically if your project requires it.

Strengths as well as weaknesses of neodymium magnets.

Benefits

Besides their immense strength, neodymium magnets offer the following advantages:

They have constant strength, and over nearly 10 years their performance decreases symbolically – ~1% (according to theory),
They are extremely resistant to demagnetization induced by external field influence,
By applying a lustrous coating of nickel, the element acquires an professional look,
They feature high magnetic induction at the operating surface, which increases their power,
Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures approaching 230°C and above...
Thanks to the option of free forming and adaptation to individualized projects, neodymium magnets can be manufactured in a broad palette of forms and dimensions, which makes them more universal,
Key role in modern industrial fields – they are utilized in HDD drives, electromotive mechanisms, medical equipment, also industrial machines.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:

At strong impacts they can crack, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
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 prevent oxidation as well as corrosion.
We recommend cover - magnetic mount, due to difficulties in producing nuts inside the magnet and complex forms.
Potential hazard to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. It is also worth noting that small elements of these devices can disrupt the diagnostic process medical in case of swallowing.
With budget limitations the cost of neodymium magnets is a challenge,

Lifting parameters

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

Magnet power is the result of a measurement for optimal configuration, taking into account:

with the contact of a yoke made of special test steel, guaranteeing full magnetic saturation
with a cross-section minimum 10 mm
with an ideally smooth touching surface
under conditions of gap-free contact (metal-to-metal)
for force applied at a right angle (in the magnet axis)
at temperature room level

Magnet lifting force in use – key factors

Holding efficiency is influenced by working environment parameters, mainly (from most important):

Distance – existence of any layer (rust, tape, gap) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of maximum force).
Plate thickness – insufficiently thick sheet does not accept the full field, causing part of the power to be lost to the other side.
Material composition – not every steel attracts identically. Alloy additives weaken the attraction effect.
Plate texture – ground elements ensure maximum contact, which increases force. Uneven metal reduce efficiency.
Thermal environment – heating the magnet causes a temporary drop of force. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under perpendicular forces, however under parallel forces the holding force is lower. Moreover, even a small distance between the magnet and the plate reduces the holding force.

Precautions when working with NdFeB magnets

Cards and drives

Data protection: Strong magnets can ruin data carriers and sensitive devices (heart implants, medical aids, mechanical watches).

Threat to navigation

An intense magnetic field interferes with the operation of compasses in phones and navigation systems. Keep magnets close to a smartphone to prevent breaking the sensors.

Beware of splinters

Despite the nickel coating, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.

Dust explosion hazard

Mechanical processing of neodymium magnets carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Life threat

For implant holders: Powerful magnets affect medical devices. Keep minimum 30 cm distance or request help to handle the magnets.

Skin irritation risks

Medical facts indicate that the nickel plating (standard magnet coating) is a common allergen. If you have an allergy, prevent direct skin contact and opt for encased magnets.

Conscious usage

Handle magnets consciously. Their huge power can surprise even experienced users. Stay alert and respect their force.

Thermal limits

Avoid heat. NdFeB magnets are sensitive to temperature. If you require resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

This is not a toy

Only for adults. Small elements pose a choking risk, leading to intestinal necrosis. Store away from children and animals.

Physical harm

Mind your fingers. Two large magnets will join immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!

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

MW 25x5 / N38 - cylindrical magnet

Physical properties - MW 25x5 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the magnet - technical parameters

Table 1: Static pull force (force vs gap) - characteristics MW 25x5 / N38

Table 2: Slippage hold (wall) MW 25x5 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MW 25x5 / N38

Table 4: Material efficiency (substrate influence) - power losses MW 25x5 / N38

Table 5: Thermal resistance (material behavior) - power drop MW 25x5 / N38

Table 6: Two magnets (attraction) - field range MW 25x5 / N38

Table 7: Hazards (electronics) - warnings MW 25x5 / N38

Table 8: Impact energy (cracking risk) - collision effects MW 25x5 / N38

Table 9: Anti-corrosion coating durability MW 25x5 / N38

Table 10: Electrical data (Pc) MW 25x5 / N38

Table 11: Underwater work (magnet fishing) MW 25x5 / N38

1. Vertical hold

2. Efficiency vs thickness

3. Temperature resistance

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

Chemical composition

Environmental data

Pulling force

Magnetic Induction

See also deals

MW 12x4 / N38 - cylindrical magnet

UMP 75x25 [M10x3] GW F200 GOLD DUAL / N42 - search holder

SM 25x175 [2xM8] / N42 - magnetic separator

MW 18.9x10 / N38 - cylindrical magnet

Strengths as well as weaknesses of neodymium magnets.

Benefits

Limitations

Lifting parameters

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

Magnet lifting force in use – key factors

Precautions when working with NdFeB magnets

Cards and drives

Threat to navigation

Beware of splinters

Dust explosion hazard

Life threat

Skin irritation risks

Conscious usage

Thermal limits

This is not a toy

Physical harm

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - characteristics
MW 25x5 / N38

Table 2: Slippage hold (wall)
MW 25x5 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 25x5 / N38

Table 4: Material efficiency (substrate influence) - power losses
MW 25x5 / N38

Table 5: Thermal resistance (material behavior) - power drop
MW 25x5 / N38

Table 6: Two magnets (attraction) - field range
MW 25x5 / N38

Table 7: Hazards (electronics) - warnings
MW 25x5 / N38

Table 8: Impact energy (cracking risk) - collision effects
MW 25x5 / N38

Table 9: Anti-corrosion coating durability
MW 25x5 / N38

Table 10: Electrical data (P_c)
MW 25x5 / N38

Table 11: Underwater work (magnet fishing)
MW 25x5 / N38