Product available Ships tomorrow

MW 70x40 / N38 - cylindrical magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN
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

see technical specifications »

395.40 ZŁ with VAT / pcs + price for transport

321.46 ZŁ net + 23% VAT / pcs

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Detailed specification - 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 modeling of the assembly - report

These values are the direct effect of a engineering calculation. Results are based on models for the class Nd₂Fe₁₄B. Operational conditions might slightly deviate from the simulation results. Please consider these calculations as a supplementary guide for designers.

Table 1: Static pull force (pull vs distance) - 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	dangerous!
1 mm	4538 Gs 453.8 mT	155.47 kg / 342.75 lbs 155467.9 g / 1525.1 N	dangerous!
2 mm	4409 Gs 440.9 mT	146.74 kg / 323.52 lbs 146744.5 g / 1439.6 N	dangerous!
3 mm	4279 Gs 427.9 mT	138.20 kg / 304.68 lbs 138201.8 g / 1355.8 N	dangerous!
5 mm	4017 Gs 401.7 mT	121.81 kg / 268.54 lbs 121806.5 g / 1194.9 N	dangerous!
10 mm	3376 Gs 337.6 mT	86.03 kg / 189.65 lbs 86025.3 g / 843.9 N	dangerous!
15 mm	2788 Gs 278.8 mT	58.69 kg / 129.38 lbs 58686.8 g / 575.7 N	dangerous!
20 mm	2279 Gs 227.9 mT	39.22 kg / 86.46 lbs 39215.6 g / 384.7 N	dangerous!
30 mm	1511 Gs 151.1 mT	17.22 kg / 37.97 lbs 17222.5 g / 169.0 N	dangerous!
50 mm	699 Gs 69.9 mT	3.69 kg / 8.13 lbs 3690.0 g / 36.2 N	strong

Magnetic force decreases drastically with every mm of gap. Remember that even a very thin break (e.g., dirt, varnish, dust) strongly reduces the pull force. Magnets work optimally during direct contact; gap weakens the force. Notice how flashily the load capacity fall, when the magnet does not adhere directly to the metal substrate. When designing the arrangement, avoid unnecessary gaps.

Table 2: Shear hold (vertical surface)
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

This section defines the estimated holding capacity necessary to initiate the slippage of the magnet downwards along a upright metal surface (considering standard friction coefficient). This parameter is a function of the air gap between the magnet and the metal.

Table 3: Vertical assembly (shearing) - 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 mounting a element on a upright surface (e.g., a board), it will maintain only about 1/5 of nominal attraction strength. Gravity as well as a weak degree of grip influence the fact that holders slip easier than they pop off the substrate. Planning a hanger? Remember that the shear force is noticeably lower than the perpendicular breakaway force. On a painted metal, the element will give way down under a much lighter weight. Using a rubber pad can effectively raise the stability.

Table 4: Material efficiency (saturation) - 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 metal plate is unable to take in the entire magnetic field, which wastes potential of the magnet. If you attach a powerful product to a weak sheet, the flux will penetrate right through and the pull force will drop sharply. To achieve full efficiency of this neodymium's power, you need a suitably thick piece of steel. The saturation effect causes that on sheet metal structures (e.g., thin profiles), the product holds weaker. We suggest choosing the steel thickness from these parameters.

Table 5: Thermal resistance (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

Standard neodymium magnets irreversibly lose parameters after exceeding the maximum temperature. Avoid high temperatures – heat can irreversibly destroy this magnet. With increasing heat, the magnet's capacity temporarily lowers. Avoid using this magnet close to ovens exceeding its working range. Exceeding the critical threshold will lead to destruction of magnetism.

*Technical advisory: Thermal stability is determined by both grade, and the Permeance Coefficient Pc. Low-profile magnets (low permeance coefficient) are more susceptible to demagnetization at lower temperatures compared to rod magnets. The danger warning in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field range
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 magnetic products interact from a wider radius than a magnet and sheet combination. Such a system of two magnets generates a stronger field and a further horizon of action. Designing a strong closure? Use a pair of magnets instead of a neodymium and a striker plate. Remember that when connecting a pair of magnets, the collision energy is extreme. The levitation is a bit weaker than the attraction, but still large.
*The magnetic induction for N-N configuration drops to ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Attention: Results refer to shear force of a pair of matching neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (electronics) - precautionary measures
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
Phone / Smartphone	40 Gs (4.0 mT)	17.5 cm
Car key	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

Extremely neodym field is a serious hazard to electronics and medical implants. These magnets produce a field that destroys function of sensitive medical devices. Notice: the unseen radiation passes through tissues and glass. Exceptional care must be taken by people with hearing aids and drug dispensers. Influence will be felt by: automatic timepieces, car keys, speakers, and displays. Do not bring the product near payment 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 strong collision with metal risks their cracking. Watch the impact speed – a neodymium left loose turns into a projectile. Striking energy can destroy the magnet or painful pinches to fingers. 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 eye protection when handling with large magnets.

Table 9: Surface protection spec
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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Note the thickness of the protective layer.

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

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

Total magnetic flux emitted by the magnet pole. Essential parameter for generator designers and motors. The P_c coefficient defines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
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%

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. However, remember the water resistance when pulling the rope quickly.

1. Vertical hold

*Note: On a vertical wall, the magnet holds only ~20% of its perpendicular strength.

2. Plate thickness effect

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

3. Thermal stability

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.64

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

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: 010097-2026

Measurement Calculator

Force (pull)

Force in kg

Force (N)

Force in lbs

Field Strength

Induction (Gs)

Tesla (T)

Input your figure in one of the inputs, and the rest convert instantly.

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The presented product is an incredibly powerful rod magnet, composed of durable NdFeB material, which, at dimensions of Ø70x40 mm, guarantees optimal power. The MW 70x40 / N38 component features a tolerance of ±0.1mm and industrial build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 164.24 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

It finds application in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 1611.16 N with a weight of only 1154.54 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.

Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure stability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.

Magnets NdFeB grade N38 are suitable for 90% of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger 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.

This model is characterized by dimensions Ø70x40 mm, which, at a weight of 1154.54 g, makes it an element with impressive magnetic energy density. 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 as well as cons of rare earth magnets.

Benefits

Apart from their consistent holding force, neodymium magnets have these key benefits:

They do not lose strength, even after nearly 10 years – the drop in power is only ~1% (based on measurements),
Neodymium magnets are highly resistant to demagnetization caused by external interference,
The use of an elegant finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
Neodymium magnets achieve maximum magnetic induction on a their surface, which allows for strong attraction,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for functioning at temperatures approaching 230°C and above...
In view of the potential of precise shaping and customization to specialized requirements, magnetic components can be created in a variety of forms and dimensions, which increases their versatility,
Fundamental importance in high-tech industry – they are utilized in hard drives, drive modules, advanced medical instruments, as well as complex engineering applications.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Drawbacks and weaknesses of neodymium magnets: application proposals

To avoid cracks under impact, we suggest using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
Magnets exposed to a humid environment can rust. Therefore during using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
We recommend casing - magnetic mount, due to difficulties in realizing threads inside the magnet and complex forms.
Health risk to health – tiny shards of magnets pose a threat, in case of ingestion, which is particularly important in the context of child health protection. Furthermore, small elements of these products are able to be problematic in diagnostics medical when they are in the body.
Due to expensive raw materials, their price exceeds standard values,

Pull force analysis

Maximum magnetic pulling force – what affects it?

Information about lifting capacity was defined for ideal contact conditions, including:

using a base made of mild steel, serving as a ideal flux conductor
whose transverse dimension reaches at least 10 mm
with an ground touching surface
without the slightest clearance between the magnet and steel
during detachment in a direction vertical to the plane
at ambient temperature room level

Practical aspects of lifting capacity – factors

Please note that the application force may be lower subject to the following factors, in order of importance:

Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
Direction of force – maximum parameter is obtained only during perpendicular pulling. The shear force of the magnet along the surface is usually several times lower (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 converting into lifting capacity.
Steel type – mild steel attracts best. Higher carbon content decrease magnetic permeability and lifting capacity.
Base smoothness – the more even the plate, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
Thermal factor – high temperature weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under shearing force the lifting capacity is smaller. Moreover, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Precautions when working with NdFeB magnets

Caution required

Use magnets with awareness. Their huge power can surprise even professionals. Stay alert and do not underestimate their power.

Shattering risk

Watch out for shards. Magnets can explode upon violent connection, launching sharp fragments into the air. We recommend safety glasses.

Life threat

Warning for patients: Strong magnetic fields disrupt medical devices. Maintain at least 30 cm distance or ask another person to handle the magnets.

Power loss in heat

Regular neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. The loss of strength is permanent.

Danger to the youngest

These products are not toys. Eating multiple magnets may result in them attracting across intestines, which poses a severe health hazard and necessitates urgent medical intervention.

Keep away from computers

Device Safety: Strong magnets can damage payment cards and sensitive devices (heart implants, medical aids, timepieces).

Nickel allergy

Nickel alert: The Ni-Cu-Ni coating contains nickel. If redness happens, cease handling magnets and wear gloves.

Physical harm

Protect your hands. Two powerful magnets will join immediately with a force of massive weight, destroying everything in their path. Be careful!

Fire warning

Machining of NdFeB material carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

GPS and phone interference

An intense magnetic field negatively affects the operation of magnetometers in smartphones and navigation systems. Do not bring magnets close to a device to avoid breaking the sensors.

Safety First! More info about hazards in the article: Magnet Safety Guide.

MW 70x40 / N38 - cylindrical magnet

Detailed specification - MW 70x40 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the assembly - report

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

Table 2: Shear hold (vertical surface) MW 70x40 / N38

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

Table 4: Material efficiency (saturation) - sheet metal selection MW 70x40 / N38

Table 5: Thermal resistance (material behavior) - power drop MW 70x40 / N38

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

Table 7: Safety (HSE) (electronics) - precautionary measures MW 70x40 / N38

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

Table 9: Surface protection spec MW 70x40 / N38

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

Table 11: Hydrostatics and buoyancy MW 70x40 / N38

1. Vertical hold

2. Plate thickness effect

3. Thermal stability

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

Material specification

Sustainability

Force (pull)

Field Strength

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Pros as well as cons of rare earth magnets.

Benefits

Disadvantages

Pull force analysis

Maximum magnetic pulling force – what affects it?

Practical aspects of lifting capacity – factors

Precautions when working with NdFeB magnets

Caution required

Shattering risk

Life threat

Power loss in heat

Danger to the youngest

Keep away from computers

Nickel allergy

Physical harm

Fire warning

GPS and phone interference

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Shear hold (vertical surface)
MW 70x40 / N38

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

Table 4: Material efficiency (saturation) - sheet metal selection
MW 70x40 / N38

Table 5: Thermal resistance (material behavior) - power drop
MW 70x40 / N38

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

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 70x40 / N38

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

Table 9: Surface protection spec
MW 70x40 / N38

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

Table 11: Hydrostatics and buoyancy
MW 70x40 / N38