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MW 70x40 / 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 010097

GTIN/EAN: 5906301810964

5.00

Diameter Ø

70 mm [±0,1 mm]

Height

40 mm [±0,1 mm]

Weight

1154.54 g

Magnetization Direction

↑ axial

Load capacity

164.24 kg / 1611.16 N

Magnetic Induction

466.52 mT / 4665 Gs

Coating

[NiCuNi] Nickel

product specifications »

395.40 ZŁ with VAT / pcs + price for transport

321.46 ZŁ net + 23% VAT / pcs

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Technical - MW 70x40 / N38 - cylindrical magnet

Specification / characteristics - MW 70x40 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010097
GTIN/EAN	5906301810964
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	70 mm [±0,1 mm]
Height	40 mm [±0,1 mm]
Weight	1154.54 g
Magnetization Direction	↑ axial
Load capacity ~ ?	164.24 kg / 1611.16 N
Magnetic Induction ~ ?	466.52 mT / 4665 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 70x40 / 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 - technical parameters

The following information represent the direct effect of a physical analysis. Values are based on models for the class Nd₂Fe₁₄B. Real-world conditions might slightly differ. Please consider these data as a preliminary roadmap when designing systems.

Table 1: Static force (force vs gap) - interaction chart
MW 70x40 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4665 Gs 466.5 mT	164.24 kg / 362.09 lbs 164240.0 g / 1611.2 N	critical level
1 mm	4538 Gs 453.8 mT	155.47 kg / 342.75 lbs 155467.9 g / 1525.1 N	critical level
2 mm	4409 Gs 440.9 mT	146.74 kg / 323.52 lbs 146744.5 g / 1439.6 N	critical level
3 mm	4279 Gs 427.9 mT	138.20 kg / 304.68 lbs 138201.8 g / 1355.8 N	critical level
5 mm	4017 Gs 401.7 mT	121.81 kg / 268.54 lbs 121806.5 g / 1194.9 N	critical level
10 mm	3376 Gs 337.6 mT	86.03 kg / 189.65 lbs 86025.3 g / 843.9 N	critical level
15 mm	2788 Gs 278.8 mT	58.69 kg / 129.38 lbs 58686.8 g / 575.7 N	critical level
20 mm	2279 Gs 227.9 mT	39.22 kg / 86.46 lbs 39215.6 g / 384.7 N	critical level
30 mm	1511 Gs 151.1 mT	17.22 kg / 37.97 lbs 17222.5 g / 169.0 N	critical level
50 mm	699 Gs 69.9 mT	3.69 kg / 8.13 lbs 3690.0 g / 36.2 N	strong

Pulling power weakens sharply with every mm of distance. Note that even a very thin break (e.g., contamination, varnish, rust) noticeably diminishes the holding power. Magnetic products work most effectively at the point of direct contact; air break weakens the power. Analyze how quickly the load capacity drop, when the magnet does not adhere tightly to the steel surface. When planning the arrangement, eliminate additional spacers.

Table 2: Sliding capacity (wall)
MW 70x40 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	32.85 kg / 72.42 lbs 32848.0 g / 322.2 N
1 mm	Stal (~0.2)	31.09 kg / 68.55 lbs 31094.0 g / 305.0 N
2 mm	Stal (~0.2)	29.35 kg / 64.70 lbs 29348.0 g / 287.9 N
3 mm	Stal (~0.2)	27.64 kg / 60.94 lbs 27640.0 g / 271.1 N
5 mm	Stal (~0.2)	24.36 kg / 53.71 lbs 24362.0 g / 239.0 N
10 mm	Stal (~0.2)	17.21 kg / 37.93 lbs 17206.0 g / 168.8 N
15 mm	Stal (~0.2)	11.74 kg / 25.88 lbs 11738.0 g / 115.1 N
20 mm	Stal (~0.2)	7.84 kg / 17.29 lbs 7844.0 g / 76.9 N
30 mm	Stal (~0.2)	3.44 kg / 7.59 lbs 3444.0 g / 33.8 N
50 mm	Stal (~0.2)	0.74 kg / 1.63 lbs 738.0 g / 7.2 N

The table below indicates the estimated weight limit necessary to cause the slippage of the magnet downwards against a vertical steel wall (considering typical friction coefficient). This value is a function of the gap size between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MW 70x40 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	49.27 kg / 108.63 lbs 49272.0 g / 483.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	32.85 kg / 72.42 lbs 32848.0 g / 322.2 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	16.42 kg / 36.21 lbs 16424.0 g / 161.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	82.12 kg / 181.04 lbs 82120.0 g / 805.6 N

When placing a element on a vertical wall (e.g., a car body), it you can count on only about 1/5 of its nominal power. Gravitational force as well as a low friction coefficient mean that magnets slide down faster than they pull off. Designing a vertical fastening? Consider that the sliding force is much weaker than the perpendicular breakaway force. On a slippery surface, the holder will slip down under a noticeably lighter cargo. Using a rubber coating can significantly improve the result.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 70x40 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	5.47 kg / 12.07 lbs 5474.7 g / 53.7 N
1 mm	8%	13.69 kg / 30.17 lbs 13686.7 g / 134.3 N
2 mm	17%	27.37 kg / 60.35 lbs 27373.3 g / 268.5 N
3 mm	25%	41.06 kg / 90.52 lbs 41060.0 g / 402.8 N
5 mm	42%	68.43 kg / 150.87 lbs 68433.3 g / 671.3 N
10 mm	83%	136.87 kg / 301.74 lbs 136866.7 g / 1342.7 N
11 mm	92%	150.55 kg / 331.91 lbs 150553.3 g / 1476.9 N
12 mm	100%	164.24 kg / 362.09 lbs 164240.0 g / 1611.2 N

A thin sheet is unable to conduct the full magnetic flux, which squanders power of the magnet. If you attach a powerful product to a weak sheet, the flux will penetrate right through and the holding will be smaller. To achieve full efficiency of this neodymium's power, you need a suitably thick backing of metal. The saturation phenomenon means that on sheet metal structures (e.g., car bodies), the product shows lower pull force. We advise picking the steel thickness from these parameters.

Table 5: Working in heat (material behavior) - power drop
MW 70x40 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	164.24 kg / 362.09 lbs 164240.0 g / 1611.2 N	OK
40 °C	-2.2%	160.63 kg / 354.12 lbs 160626.7 g / 1575.7 N	OK
60 °C	-4.4%	157.01 kg / 346.15 lbs 157013.4 g / 1540.3 N	OK
80 °C	-6.6%	153.40 kg / 338.19 lbs 153400.2 g / 1504.9 N
100 °C	-28.8%	116.94 kg / 257.81 lbs 116938.9 g / 1147.2 N

Classic neodymiums change their properties strength after exceeding the maximum temperature. Protect against heat – high temperature can irreversibly demagnetize this magnet. As the temperature rises, the neodymium's capacity temporarily lowers. Refrain from using this product near heat sources exceeding its safe range. Ignoring the limit will result in permanent loss of magnetic properties.

*Important note: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (pancake types) are more susceptible to demagnetization sooner than long magnets. The danger warning in the table points to permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 70x40 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	516.26 kg / 1138.16 lbs 5 679 Gs	77.44 kg / 170.72 lbs 77439 g / 759.7 N	N/A
1 mm	502.57 kg / 1107.98 lbs 9 205 Gs	75.39 kg / 166.20 lbs 75385 g / 739.5 N	452.31 kg / 997.18 lbs ~0 Gs
2 mm	488.69 kg / 1077.37 lbs 9 077 Gs	73.30 kg / 161.61 lbs 73303 g / 719.1 N	439.82 kg / 969.63 lbs ~0 Gs
3 mm	474.91 kg / 1047.01 lbs 8 948 Gs	71.24 kg / 157.05 lbs 71237 g / 698.8 N	427.42 kg / 942.31 lbs ~0 Gs
5 mm	447.76 kg / 987.15 lbs 8 688 Gs	67.16 kg / 148.07 lbs 67164 g / 658.9 N	402.99 kg / 888.43 lbs ~0 Gs
10 mm	382.88 kg / 844.10 lbs 8 034 Gs	57.43 kg / 126.62 lbs 57432 g / 563.4 N	344.59 kg / 759.69 lbs ~0 Gs
20 mm	270.41 kg / 596.14 lbs 6 752 Gs	40.56 kg / 89.42 lbs 40561 g / 397.9 N	243.37 kg / 536.53 lbs ~0 Gs
50 mm	81.66 kg / 180.03 lbs 3 710 Gs	12.25 kg / 27.01 lbs 12249 g / 120.2 N	73.50 kg / 162.03 lbs ~0 Gs
60 mm	54.14 kg / 119.35 lbs 3 021 Gs	8.12 kg / 17.90 lbs 8120 g / 79.7 N	48.72 kg / 107.41 lbs ~0 Gs
70 mm	36.14 kg / 79.69 lbs 2 469 Gs	5.42 kg / 11.95 lbs 5422 g / 53.2 N	32.53 kg / 71.72 lbs ~0 Gs
80 mm	24.40 kg / 53.80 lbs 2 028 Gs	3.66 kg / 8.07 lbs 3661 g / 35.9 N	21.96 kg / 48.42 lbs ~0 Gs
90 mm	16.70 kg / 36.82 lbs 1 678 Gs	2.51 kg / 5.52 lbs 2505 g / 24.6 N	15.03 kg / 33.14 lbs ~0 Gs
100 mm	11.60 kg / 25.57 lbs 1 398 Gs	1.74 kg / 3.84 lbs 1740 g / 17.1 N	10.44 kg / 23.01 lbs ~0 Gs

Two strong neodymiums attract each other from a wider radius than a magnet and steel setup. Such a system of magnet-to-magnet creates a more powerful interaction and a further horizon of action. Designing a powerful holder? Utilize two neodymiums instead of one magnet and a striker plate. Exercise caution that when bringing together two magnets, the collision energy is huge. The repulsion force is a bit weaker than the connection force, but still significant.
*Flux density between like poles reaches ~0 Gs in the exact middle between the magnets (due to field cancellation).
* Results show shear force of a pair of identical neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - warnings
MW 70x40 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	37.5 cm
Hearing aid	10 Gs (1.0 mT)	29.5 cm
Timepiece	20 Gs (2.0 mT)	23.0 cm
Mobile device	40 Gs (4.0 mT)	17.5 cm
Remote	50 Gs (5.0 mT)	16.5 cm
Payment card	400 Gs (40.0 mT)	7.0 cm
HDD hard drive	600 Gs (60.0 mT)	5.5 cm

Powerful magnet radiation is a real danger to IT equipment and medical implants. These magnets generate a field that disrupts operation of digital equipment. Be aware: the unseen radiation acts through matter and glass. Special caution must be exercised by people with hearing aids and drug dispensers. Also at risk are: mechanical watches, car keys, speakers, and screens. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - collision effects
MW 70x40 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	15.47 km/h (4.30 m/s)	10.66 J
30 mm	22.16 km/h (6.15 m/s)	21.87 J
50 mm	27.27 km/h (7.58 m/s)	33.13 J
100 mm	38.07 km/h (10.57 m/s)	64.55 J

Neodymium magnets are very brittle – a violent impact against metal can result in shattering. Pay attention to connection velocity – a magnet released freely turns into a projectile. Striking energy can cause material chips or dangerous crushing to fingers. Be sure to control the product during bringing near metal so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Wear safety glasses when playing with large magnets.

Table 9: Coating parameters (durability)
MW 70x40 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MW 70x40 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	180 982 Mx	1809.8 µWb
P_c Coefficient	0.64	High (Stable)

Flux value passing through the pole surface. Essential parameter for generator designers as well as sensors. The P_c coefficient determines the magnet's operating point.

Table 11: Physics of underwater searching
MW 70x40 / N38

Environment	Effective steel pull	Effect
Air (land)	164.24 kg	Standard
Water (riverbed)	188.05 kg (+23.81 kg buoyancy gain)	+14.5%

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

In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

*Caution: On a vertical wall, the magnet retains only a fraction of its perpendicular strength.

2. Steel thickness impact

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

3. Heat tolerance

*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) = 0.64

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.

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%

Ecology and recycling (GPSR)

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: 010097-2026

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The presented product is an extremely powerful cylindrical magnet, composed of advanced NdFeB material, which, at dimensions of Ø70x40 mm, guarantees optimal power. The MW 70x40 / N38 component boasts a tolerance of ±0.1mm and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 164.24 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 1611.16 N with a weight of only 1154.54 g, this rod 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., 70.1 mm) using two-component epoxy glues. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability 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 the strongest magnets in the same volume (Ø70x40), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 70 mm and height 40 mm. The value of 1611.16 N means that the magnet is capable of holding a weight many times exceeding its own mass of 1154.54 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, 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 70 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.

Pros and cons of rare earth magnets.

Benefits

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

They do not lose magnetism, even after nearly ten years – the decrease in strength is only ~1% (based on measurements),
Magnets effectively resist against loss of magnetization caused by external fields,
By using a reflective coating of gold, the element has an nice look,
Magnets are characterized by maximum magnetic induction on the outer layer,
Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
Considering the ability of free molding and customization to specialized needs, NdFeB magnets can be created in a variety of forms and dimensions, which makes them more universal,
Universal use in innovative solutions – they serve a role in hard drives, drive modules, diagnostic systems, as well as modern systems.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Limitations

Characteristics of disadvantages of neodymium magnets and ways of using them

To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
NdFeB magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
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 secure oxidation as well as corrosion.
Due to limitations in creating nuts and complex shapes in magnets, we propose using casing - magnetic mechanism.
Possible danger to health – tiny shards of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small components of these magnets can complicate diagnosis medical after entering the body.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Maximum lifting capacity of the magnet – what it depends on?

The declared magnet strength concerns the maximum value, measured under ideal test conditions, specifically:

on a base made of mild steel, effectively closing the magnetic flux
whose transverse dimension is min. 10 mm
with a surface free of scratches
without any air gap between the magnet and steel
under perpendicular force vector (90-degree angle)
at conditions approx. 20°C

Determinants of practical lifting force of a magnet

Holding efficiency is affected by specific conditions, including (from most important):

Gap between surfaces – every millimeter of distance (caused e.g. by varnish or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
Material type – ideal substrate is high-permeability steel. Hardened steels may have worse magnetic properties.
Base smoothness – the more even the surface, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
Heat – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was assessed with the use of a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under shearing force the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.

Safe handling of neodymium magnets

Flammability

Dust produced during cutting of magnets is self-igniting. Avoid drilling into magnets without proper cooling and knowledge.

Warning for heart patients

Warning for patients: Strong magnetic fields disrupt electronics. Keep minimum 30 cm distance or request help to handle the magnets.

Warning for allergy sufferers

Some people have a sensitization to nickel, which is the common plating for neodymium magnets. Extended handling may cause dermatitis. We suggest use safety gloves.

Precision electronics

A strong magnetic field negatively affects the functioning of compasses in phones and GPS navigation. Do not bring magnets near a device to prevent damaging the sensors.

Powerful field

Be careful. Neodymium magnets attract from a distance and connect with huge force, often faster than you can move away.

Cards and drives

Powerful magnetic fields can corrupt files on credit cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.

Product not for children

Neodymium magnets are not toys. Accidental ingestion of several magnets may result in them pinching intestinal walls, which constitutes a direct threat to life and necessitates urgent medical intervention.

Do not overheat magnets

Avoid heat. NdFeB magnets are sensitive to heat. If you need resistance above 80°C, look for HT versions (H, SH, UH).

Crushing risk

Big blocks can break fingers in a fraction of a second. Never put your hand between two strong magnets.

Beware of splinters

Watch out for shards. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.

Security! Looking for details? Check our post: Why are neodymium magnets dangerous?

MW 70x40 / N38 - cylindrical magnet

Technical - MW 70x40 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the product - technical parameters

Table 1: Static force (force vs gap) - interaction chart MW 70x40 / N38

Table 2: Sliding capacity (wall) MW 70x40 / N38

Table 3: Vertical assembly (sliding) - vertical pull MW 70x40 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MW 70x40 / N38

Table 5: Working in heat (material behavior) - power drop MW 70x40 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MW 70x40 / N38

Table 7: Hazards (electronics) - warnings MW 70x40 / N38

Table 8: Impact energy (kinetic energy) - collision effects MW 70x40 / N38

Table 9: Coating parameters (durability) MW 70x40 / N38

Table 10: Construction data (Flux) MW 70x40 / N38

Table 11: Physics of underwater searching MW 70x40 / N38

1. Vertical hold

2. Steel thickness impact

3. Heat tolerance

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

Material specification

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Induction

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MPL 30x20x5 / N38 - lamellar magnet

Pros and cons of rare earth magnets.

Benefits

Limitations

Pull force analysis

Maximum lifting capacity of the magnet – what it depends on?

Determinants of practical lifting force of a magnet

Safe handling of neodymium magnets

Flammability

Warning for heart patients

Warning for allergy sufferers

Precision electronics

Powerful field

Cards and drives

Product not for children

Do not overheat magnets

Crushing risk

Beware of splinters

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - interaction chart
MW 70x40 / N38

Table 2: Sliding capacity (wall)
MW 70x40 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MW 70x40 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 70x40 / N38

Table 5: Working in heat (material behavior) - power drop
MW 70x40 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 70x40 / N38

Table 7: Hazards (electronics) - warnings
MW 70x40 / N38

Table 8: Impact energy (kinetic energy) - collision effects
MW 70x40 / N38

Table 9: Coating parameters (durability)
MW 70x40 / N38

Table 10: Construction data (Flux)
MW 70x40 / N38

Table 11: Physics of underwater searching
MW 70x40 / N38