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MW 40x8 / 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 010069

GTIN/EAN: 5906301810681

5.00

Diameter Ø

40 mm [±0,1 mm]

Height

8 mm [±0,1 mm]

Weight

75.4 g

Magnetization Direction

↑ axial

Load capacity

20.43 kg / 200.39 N

Magnetic Induction

230.22 mT / 2302 Gs

Coating

[NiCuNi] Nickel

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Technical data of the product - MW 40x8 / N38 - cylindrical magnet

Specification / characteristics - MW 40x8 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010069
GTIN/EAN	5906301810681
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	40 mm [±0,1 mm]
Height	8 mm [±0,1 mm]
Weight	75.4 g
Magnetization Direction	↑ axial
Load capacity ~ ?	20.43 kg / 200.39 N
Magnetic Induction ~ ?	230.22 mT / 2302 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 40x8 / 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 assembly - data

These data represent the direct effect of a mathematical analysis. Results rely on algorithms for the material Nd₂Fe₁₄B. Actual parameters may deviate from the simulation results. Please consider these data as a supplementary guide for designers.

Table 1: Static force (pull vs gap) - interaction chart
MW 40x8 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2302 Gs 230.2 mT	20.43 kg / 45.04 pounds 20430.0 g / 200.4 N	critical level
1 mm	2235 Gs 223.5 mT	19.25 kg / 42.44 pounds 19252.0 g / 188.9 N	critical level
2 mm	2156 Gs 215.6 mT	17.92 kg / 39.50 pounds 17917.4 g / 175.8 N	critical level
3 mm	2068 Gs 206.8 mT	16.49 kg / 36.36 pounds 16490.6 g / 161.8 N	critical level
5 mm	1875 Gs 187.5 mT	13.56 kg / 29.89 pounds 13556.7 g / 133.0 N	critical level
10 mm	1375 Gs 137.5 mT	7.29 kg / 16.07 pounds 7287.4 g / 71.5 N	warning
15 mm	959 Gs 95.9 mT	3.54 kg / 7.81 pounds 3542.3 g / 34.8 N	warning
20 mm	661 Gs 66.1 mT	1.68 kg / 3.71 pounds 1684.9 g / 16.5 N	weak grip
30 mm	328 Gs 32.8 mT	0.41 kg / 0.91 pounds 414.2 g / 4.1 N	weak grip
50 mm	105 Gs 10.5 mT	0.04 kg / 0.09 pounds 42.3 g / 0.4 N	weak grip

Magnetic force weakens sharply with every mm of spacing. Remember that every additional insulation layer (e.g., dirt, paint, dust) noticeably weakens the grip. Magnetic products operate most effectively at the point of direct contact; distance weakens the force. See how quickly the load capacity fall, when the product does not touch flatly to the steel surface. When calculating the assembly, avoid unnecessary gaps.

Table 2: Vertical hold (wall)
MW 40x8 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	4.09 kg / 9.01 pounds 4086.0 g / 40.1 N
1 mm	Stal (~0.2)	3.85 kg / 8.49 pounds 3850.0 g / 37.8 N
2 mm	Stal (~0.2)	3.58 kg / 7.90 pounds 3584.0 g / 35.2 N
3 mm	Stal (~0.2)	3.30 kg / 7.27 pounds 3298.0 g / 32.4 N
5 mm	Stal (~0.2)	2.71 kg / 5.98 pounds 2712.0 g / 26.6 N
10 mm	Stal (~0.2)	1.46 kg / 3.21 pounds 1458.0 g / 14.3 N
15 mm	Stal (~0.2)	0.71 kg / 1.56 pounds 708.0 g / 6.9 N
20 mm	Stal (~0.2)	0.34 kg / 0.74 pounds 336.0 g / 3.3 N
30 mm	Stal (~0.2)	0.08 kg / 0.18 pounds 82.0 g / 0.8 N
50 mm	Stal (~0.2)	0.01 kg / 0.02 pounds 8.0 g / 0.1 N

The following data presents the theoretical force needed to cause the downward movement of the magnet downwards along a upright steel plate (assuming typical friction). This value is a function of the distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MW 40x8 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	6.13 kg / 13.51 pounds 6129.0 g / 60.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	4.09 kg / 9.01 pounds 4086.0 g / 40.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	2.04 kg / 4.50 pounds 2043.0 g / 20.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	10.22 kg / 22.52 pounds 10215.0 g / 100.2 N

When placing a magnet on a vertical plane (e.g., a car body), it will maintain just approx. 1/5 of nominal attraction strength. Gravitational force as well as a weak degree of grip influence the fact that holders slide down faster than they pop off the substrate. Planning a hanger? Remember that the shear force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the holder will slip down under a noticeably lighter cargo. Utilizing a rubberized coating can significantly increase the grip.

Table 4: Material efficiency (saturation) - power losses
MW 40x8 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	1.02 kg / 2.25 pounds 1021.5 g / 10.0 N
1 mm	13%	2.55 kg / 5.63 pounds 2553.8 g / 25.1 N
2 mm	25%	5.11 kg / 11.26 pounds 5107.5 g / 50.1 N
3 mm	38%	7.66 kg / 16.89 pounds 7661.3 g / 75.2 N
5 mm	63%	12.77 kg / 28.15 pounds 12768.8 g / 125.3 N
10 mm	100%	20.43 kg / 45.04 pounds 20430.0 g / 200.4 N
11 mm	100%	20.43 kg / 45.04 pounds 20430.0 g / 200.4 N
12 mm	100%	20.43 kg / 45.04 pounds 20430.0 g / 200.4 N

A thin sheet is not enough to take in the entire magnetic field, which wastes potential of the holder. Should you mount a strong magnet to a thin surface, the field will pass right through and the pull force will drop sharply. To squeeze full efficiency of this neodymium's potential, you require a sufficiently solid backing of metal. The saturation phenomenon means that on delicate walls (e.g., car bodies), the magnet holds weaker. We suggest choosing the steel dimension from these parameters.

Table 5: Thermal stability (material behavior) - thermal limit
MW 40x8 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	20.43 kg / 45.04 pounds 20430.0 g / 200.4 N	OK
40 °C	-2.2%	19.98 kg / 44.05 pounds 19980.5 g / 196.0 N	OK
60 °C	-4.4%	19.53 kg / 43.06 pounds 19531.1 g / 191.6 N
80 °C	-6.6%	19.08 kg / 42.07 pounds 19081.6 g / 187.2 N
100 °C	-28.8%	14.55 kg / 32.07 pounds 14546.2 g / 142.7 N

Standard neodymium magnets irreversibly lose power after exceeding the maximum temperature. Avoid high temperatures – excessive heat can irreversibly damage this product. With every degree above norm, the neodymium's capacity temporarily lowers. Refrain from using this product in hot environments exceeding its safe range. Exceeding the critical threshold will result in irreversible degradation of magnetism.

*Engineering note: Temperature resistance is determined by both grade, but also on the magnet's shape. Flat magnets (low Pc) may lose charge permanently sooner than taller cylinders. Red status in the table signals permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field range
MW 40x8 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	41.05 kg / 90.51 pounds 3 871 Gs	6.16 kg / 13.58 pounds 6158 g / 60.4 N	N/A
1 mm	39.92 kg / 88.02 pounds 4 540 Gs	5.99 kg / 13.20 pounds 5989 g / 58.7 N	35.93 kg / 79.22 pounds ~0 Gs
2 mm	38.69 kg / 85.29 pounds 4 469 Gs	5.80 kg / 12.79 pounds 5803 g / 56.9 N	34.82 kg / 76.76 pounds ~0 Gs
3 mm	37.38 kg / 82.40 pounds 4 393 Gs	5.61 kg / 12.36 pounds 5606 g / 55.0 N	33.64 kg / 74.16 pounds ~0 Gs
5 mm	34.59 kg / 76.25 pounds 4 226 Gs	5.19 kg / 11.44 pounds 5188 g / 50.9 N	31.13 kg / 68.63 pounds ~0 Gs
10 mm	27.24 kg / 60.06 pounds 3 750 Gs	4.09 kg / 9.01 pounds 4086 g / 40.1 N	24.52 kg / 54.05 pounds ~0 Gs
20 mm	14.64 kg / 32.28 pounds 2 750 Gs	2.20 kg / 4.84 pounds 2197 g / 21.5 N	13.18 kg / 29.06 pounds ~0 Gs
50 mm	1.65 kg / 3.63 pounds 922 Gs	0.25 kg / 0.54 pounds 247 g / 2.4 N	1.48 kg / 3.26 pounds ~0 Gs
60 mm	0.83 kg / 1.84 pounds 656 Gs	0.12 kg / 0.28 pounds 125 g / 1.2 N	0.75 kg / 1.65 pounds ~0 Gs
70 mm	0.44 kg / 0.97 pounds 477 Gs	0.07 kg / 0.15 pounds 66 g / 0.6 N	0.40 kg / 0.87 pounds ~0 Gs
80 mm	0.24 kg / 0.54 pounds 355 Gs	0.04 kg / 0.08 pounds 37 g / 0.4 N	0.22 kg / 0.49 pounds ~0 Gs
90 mm	0.14 kg / 0.31 pounds 270 Gs	0.02 kg / 0.05 pounds 21 g / 0.2 N	0.13 kg / 0.28 pounds ~0 Gs
100 mm	0.09 kg / 0.19 pounds 210 Gs	0.01 kg / 0.03 pounds 13 g / 0.1 N	0.08 kg / 0.17 pounds ~0 Gs

Two strong neodymiums attract each other from a much further distance than a magnet and sheet setup. Such a system of magnet-to-magnet produces a massive flux and a wider radius of performance. Planning to create a strong closure? Use a pair of magnets instead of a neodymium and a steel. Remember that when attracting two neodymiums, the pinch force is massive. The repulsion force is a bit weaker than the attraction, but still significant.
*Field value between like poles drops to ~0 Gs in the exact middle of the gap (due to field cancellation).
Important: Figures demonstrate friction force of dual same neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - warnings
MW 40x8 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	15.5 cm
Hearing aid	10 Gs (1.0 mT)	12.5 cm
Mechanical watch	20 Gs (2.0 mT)	9.5 cm
Mobile device	40 Gs (4.0 mT)	7.5 cm
Remote	50 Gs (5.0 mT)	7.0 cm
Payment card	400 Gs (40.0 mT)	3.0 cm
HDD hard drive	600 Gs (60.0 mT)	2.5 cm

Powerful magnet radiation poses a serious hazard to IT equipment and pacemakers. These magnets produce a field that destroys function of sensitive medical devices. Notice: the invisible magnetic field penetrates the body and glass. Increased vigilance must be exercised by people with hearing aids and drug dispensers. Influence will be felt by: automatic timepieces, remotes, speakers, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - warning
MW 40x8 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	19.96 km/h (5.54 m/s)	1.16 J
30 mm	29.12 km/h (8.09 m/s)	2.47 J
50 mm	37.17 km/h (10.32 m/s)	4.02 J
100 mm	52.50 km/h (14.58 m/s)	8.02 J

Magnetic elements are very brittle – a strong collision with metal can result in shattering. Pay attention to connection velocity – a magnet released freely becomes dangerous. Impact energy can trigger coating fragments or dangerous crushing to skin. Be sure to control the product during mounting so it doesn't hit violently against the steel surface. A collision at high speed almost guarantees destruction of the magnet. Wear safety glasses when handling with large magnets.

Table 9: Coating parameters (durability)
MW 40x8 / 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (P_c)
MW 40x8 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	33 553 Mx	335.5 µWb
P_c Coefficient	0.29	Low (Flat)

Flux value emitted by the magnet pole. Essential parameter in coil applications and motors. The P_c coefficient determines the magnet's operating point.

Table 11: Submerged application
MW 40x8 / N38

Environment	Effective steel pull	Effect
Air (land)	20.43 kg	Standard
Water (riverbed)	23.39 kg (+2.96 kg buoyancy gain)	+14.5%

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

In water, the magnet feels stronger thanks to Archimedes' principle. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Wall mount (shear)

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

2. Steel saturation

*Thin steel (e.g. computer case) severely reduces the holding force.

3. Thermal stability

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

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

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

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Engineering data and GPSR

Material specification

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

Sustainability

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 010069-2026

Magnet Unit Converter

Pulling force

Newtons (N)

Pounds (lbs)

Field Strength

Induction (T)

Just populate one field, and the converter fill in the rest for you.

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This product is an extremely powerful cylinder magnet, composed of modern NdFeB material, which, at dimensions of Ø40x8 mm, guarantees maximum efficiency. This specific item boasts high dimensional repeatability and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 20.43 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is perfect for building electric motors, advanced Hall effect sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the high power of 200.39 N with a weight of only 75.4 g, this rod is indispensable in electronics and wherever low weight is crucial.

Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 40.1 mm) using two-component epoxy glues. To ensure long-term durability in automation, anaerobic resins 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 professional neodymium magnets, offering an optimal price-to-power ratio and operational stability. If you need even stronger magnets in the same volume (Ø40x8), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

This model is characterized by dimensions Ø40x8 mm, which, at a weight of 75.4 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 20.43 kg (force ~200.39 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 8 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized through the diameter if your project requires it.

Pros and cons of Nd₂Fe₁₄B magnets.

Advantages

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

Their power is durable, and after approximately ten years it decreases only by ~1% (theoretically),
They feature excellent resistance to magnetic field loss when exposed to opposing magnetic fields,
A magnet with a smooth silver surface has better aesthetics,
Neodymium magnets ensure maximum magnetic induction on a small surface, which increases force concentration,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
Possibility of individual machining as well as optimizing to atypical conditions,
Key role in future technologies – they are commonly used in hard drives, motor assemblies, diagnostic systems, as well as other advanced devices.
Thanks to their power density, small magnets offer high operating force, in miniature format,

Cons

Disadvantages of neodymium 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 decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
Magnets exposed to a humid environment can rust. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in producing nuts and complex forms in magnets, we propose using a housing - magnetic mount.
Health risk to health – tiny shards of magnets pose a threat, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, tiny parts of these magnets can be problematic in diagnostics medical after entering the body.
With mass production the cost of neodymium magnets can be a barrier,

Holding force characteristics

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

The declared magnet strength refers to the peak performance, measured under ideal test conditions, specifically:

with the application of a yoke made of special test steel, guaranteeing full magnetic saturation
with a thickness no less than 10 mm
with an polished contact surface
under conditions of gap-free contact (metal-to-metal)
for force applied at a right angle (pull-off, not shear)
at temperature room level

Lifting capacity in real conditions – factors

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

Gap between surfaces – every millimeter of separation (caused e.g. by varnish or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
Load vector – highest force is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is usually several times smaller (approx. 1/5 of the lifting capacity).
Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
Steel type – low-carbon steel attracts best. Alloy steels decrease magnetic properties and lifting capacity.
Surface condition – smooth surfaces guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
Thermal factor – high temperature reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the holding force is lower. Additionally, even a minimal clearance between the magnet and the plate reduces the lifting capacity.

Precautions when working with neodymium magnets

Sensitization to coating

Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If skin irritation happens, cease handling magnets and use protective gear.

Compass and GPS

Note: neodymium magnets produce a field that interferes with precision electronics. Keep a separation from your mobile, device, and navigation systems.

Heat sensitivity

Regular neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. This process is irreversible.

No play value

Absolutely store magnets away from children. Ingestion danger is high, and the effects of magnets clamping inside the body are fatal.

Dust is flammable

Fire warning: Rare earth powder is explosive. Avoid machining magnets without safety gear as this may cause fire.

Risk of cracking

Neodymium magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets leads to them cracking into shards.

Handling guide

Use magnets consciously. Their powerful strength can surprise even experienced users. Be vigilant and do not underestimate their force.

Bodily injuries

Danger of trauma: The pulling power is so great that it can result in hematomas, crushing, and broken bones. Protective gloves are recommended.

Keep away from computers

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

Medical interference

People with a pacemaker should maintain an safe separation from magnets. The magnetism can interfere with the operation of the life-saving device.

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

MW 40x8 / N38 - cylindrical magnet

Technical data of the product - MW 40x8 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the assembly - data

Table 1: Static force (pull vs gap) - interaction chart MW 40x8 / N38

Table 2: Vertical hold (wall) MW 40x8 / N38

Table 3: Vertical assembly (sliding) - vertical pull MW 40x8 / N38

Table 4: Material efficiency (saturation) - power losses MW 40x8 / N38

Table 5: Thermal stability (material behavior) - thermal limit MW 40x8 / N38

Table 6: Two magnets (attraction) - field range MW 40x8 / N38

Table 7: Protective zones (electronics) - warnings MW 40x8 / N38

Table 8: Impact energy (kinetic energy) - warning MW 40x8 / N38

Table 9: Coating parameters (durability) MW 40x8 / N38

Table 10: Construction data (Pc) MW 40x8 / N38

Table 11: Submerged application MW 40x8 / N38

1. Wall mount (shear)

2. Steel saturation

3. Thermal stability

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

Material specification

Sustainability

Pulling force

Field Strength

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MP 40x22x10 / N38 - ring magnet

Pros and cons of Nd2Fe14B magnets.

Advantages

Cons

Holding force characteristics

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

Lifting capacity in real conditions – factors

Precautions when working with neodymium magnets

Sensitization to coating

Compass and GPS

Heat sensitivity

No play value

Dust is flammable

Risk of cracking

Handling guide

Bodily injuries

Keep away from computers

Medical interference

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - interaction chart
MW 40x8 / N38

Table 2: Vertical hold (wall)
MW 40x8 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MW 40x8 / N38

Table 4: Material efficiency (saturation) - power losses
MW 40x8 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MW 40x8 / N38

Table 6: Two magnets (attraction) - field range
MW 40x8 / N38

Table 7: Protective zones (electronics) - warnings
MW 40x8 / N38

Table 8: Impact energy (kinetic energy) - warning
MW 40x8 / N38

Table 9: Coating parameters (durability)
MW 40x8 / N38

Table 10: Construction data (P_c)
MW 40x8 / N38

Table 11: Submerged application
MW 40x8 / N38

Pros and cons of Nd₂Fe₁₄B magnets.