Product available Ships tomorrow

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 parameters »

395.40 ZŁ with VAT / pcs + price for transport

321.46 ZŁ net + 23% VAT / pcs

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Physical properties - 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 - data

The following values are the result of a engineering simulation. Values were calculated on algorithms for the class Nd₂Fe₁₄B. Real-world parameters might slightly differ. Treat these data as a preliminary roadmap during assembly planning.

Table 1: Static pull force (pull vs distance) - characteristics
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	warning

Pulling power drops sharply with every subsequent millimeter of gap. Keep in mind that even the smallest gap (e.g., contamination, paint, veneer) noticeably reduces the pull force. Magnets work most effectively during direct contact; distance weakens the force. Observe how rapidly the pull force drop, when the product does not touch flatly to the metal substrate. When designing the assembly, discard redundant distances.

Table 2: Shear force (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 following data presents the theoretical holding capacity necessary to cause the slippage of the magnet vertically along a upright metal surface (assuming standard friction coefficient). The holding force is a function of the air gap between the magnet and the metal.

Table 3: Wall mounting (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 mounting a magnet on a upright plane (e.g., a board), it you can count on just about 20%-30% of nominal attraction strength. Gravity and a weak degree of grip influence the fact that magnets move down easier than they pop off the substrate. Designing a vertical fastening? Note that the sliding force is significantly lower than the perpendicular breakaway force. On a smooth steel, the holder will slip down under a much lighter load. Using a rubber layer can significantly increase the grip.

Table 4: Steel thickness (saturation) - power losses
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 cannot focus the entire magnetic field, which weakens actual performance of the magnet. Should you install a neodymium to a weak sheet, the field will pass right through and the holding will be smaller. To squeeze 100% of this neodymium's power, you need a suitably thick element of metal. The saturation effect causes that on sheet metal structures (e.g., thin profiles), the magnet works worse. We suggest choosing the steel cross-section according to the table below.

Table 5: Working in heat (material behavior) - thermal limit
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

Ordinary NdFeB products lose parameters past the thermal threshold. Watch out for overheating – heat can permanently destroy this magnet. With increasing heat, the neodymium's power briefly drops. Avoid using this magnet near heat sources higher than its safe range. Too high temperature will lead to permanent loss of magnetic properties.

*Engineering note: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Thin magnets (pancake types) are more susceptible to demagnetization under lower heat stress than long magnets. The danger warning in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - 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 much further distance than a neodymium and metal combination. The connection of magnet-to-magnet generates a stronger field and a wider radius of action. Planning to create a strong closure? Apply two magnets instead of one magnet and a steel. Be careful that when attracting two neodymiums, the impact force is extreme. The levitation is a bit weaker than the connection force, but still significant.
*The magnetic induction for N-N configuration is approximately ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Important: Results refer to sliding force of a pair of identical 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
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

A strong magnetic field is a large risk to electronics and pacemakers. These NdFeB products generate a field that prevents correct functioning of digital equipment. Remember: the unseen radiation penetrates the body and housings. Increased vigilance must be taken by people with hearing aids and drug dispensers. Also at risk are: automatic timepieces, car keys, speakers, and screens. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - 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 prone to chipping – a violent impact against metal risks their cracking. Pay attention to connection velocity – a magnet released freely speeds with massive force. Kinetic force can trigger coating fragments or injury to skin. Hold the magnet firmly during installation so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h means shattering of the magnet. Use safety goggles when handling with powerful specimens.

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 following table defines the conditions under which this product can be safely used. Note the thickness of the protective layer.

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 emitted by the magnet pole. Key data when building generators as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Submerged application
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: 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. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

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

2. Steel saturation

*Thin metal sheet (e.g. computer case) drastically limits the holding force.

3. Heat tolerance

*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%

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

Measurement Calculator

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MW 12x1.5 / N38 - cylindrical magnet

0.431 ZŁ brutto / pcs

The offered product is an extremely powerful cylindrical magnet, manufactured from modern NdFeB material, which, at dimensions of Ø70x40 mm, guarantees optimal power. This specific item 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 warehouse in Poland, ensuring quick order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

This model is ideal for building electric motors, advanced Hall effect sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the pull force of 1611.16 N with a weight of only 1154.54 g, this rod is indispensable in electronics and wherever low weight is crucial.

Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure long-term durability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Magnets N38 are strong enough for the majority of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. 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 secures it against external factors, 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. Such an arrangement is standard when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized through the diameter if your project requires it.

Pros as well as cons of neodymium magnets.

Advantages

In addition to their magnetic capacity, neodymium magnets provide the following advantages:

They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (based on calculations),
They retain their magnetic properties even under external field action,
A magnet with a smooth nickel surface is more attractive,
Magnetic induction on the surface of the magnet remains very high,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
Possibility of custom shaping and optimizing to concrete needs,
Significant place in advanced technology sectors – they are commonly used in mass storage devices, electromotive mechanisms, diagnostic systems, as well as multitasking production systems.
Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Limitations

Disadvantages of neodymium magnets:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
We suggest casing - magnetic holder, due to difficulties in creating nuts inside the magnet and complicated shapes.
Health risk related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the context of child safety. Additionally, small components of these magnets can be problematic in diagnostics medical in case of swallowing.
With budget limitations the cost of neodymium magnets is a challenge,

Holding force characteristics

Magnetic strength at its maximum – what affects it?

The force parameter is a theoretical maximum value executed under standard conditions:

on a block made of structural steel, perfectly concentrating the magnetic field
whose thickness equals approx. 10 mm
characterized by lack of roughness
under conditions of no distance (metal-to-metal)
for force acting at a right angle (pull-off, not shear)
in neutral thermal conditions

Practical aspects of lifting capacity – factors

It is worth knowing that the application force will differ influenced by the following factors, in order of importance:

Gap (between the magnet and the metal), because even a microscopic clearance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet exhibits much less (typically approx. 20-30% of nominal force).
Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
Material composition – not every steel reacts the same. High carbon content worsen the attraction effect.
Surface quality – the more even the surface, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was determined using a polished steel plate of suitable thickness (min. 20 mm), under vertically applied force, however under shearing force the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet and the plate lowers the holding force.

Safety rules for work with NdFeB magnets

Serious injuries

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

Electronic hazard

Intense magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Stay away of min. 10 cm.

Pacemakers

Medical warning: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Operating temperature

Keep cool. Neodymium magnets are sensitive to heat. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Product not for children

Neodymium magnets are not suitable for play. Eating multiple magnets can lead to them connecting inside the digestive tract, which poses a direct threat to life and necessitates urgent medical intervention.

Magnet fragility

Despite the nickel coating, the material is delicate and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Fire warning

Powder created during cutting of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Handling guide

Before use, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.

Nickel allergy

Allergy Notice: The nickel-copper-nickel coating contains nickel. If skin irritation occurs, cease handling magnets and wear gloves.

Magnetic interference

A powerful magnetic field disrupts the operation of magnetometers in smartphones and GPS navigation. Maintain magnets near a smartphone to prevent breaking the sensors.

Safety First! Looking for details? Check our post: Are neodymium magnets dangerous?

MW 70x40 / N38 - cylindrical magnet

Physical properties - 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 - data

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

Table 2: Shear force (wall) MW 70x40 / N38

Table 3: Wall mounting (sliding) - vertical pull MW 70x40 / N38

Table 4: Steel thickness (saturation) - power losses MW 70x40 / N38

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

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

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

Table 8: Dynamics (cracking risk) - collision effects MW 70x40 / N38

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

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

Table 11: Submerged application MW 70x40 / N38

1. Vertical hold

2. Steel saturation

3. Heat tolerance

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

Material specification

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

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UMGGZ 66x8.5 [M8] GZ / N38 - rubber magnetic holder external thread

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HH 42x8.8 [M6] / N38 - through hole magnetic holder

MW 12x1.5 / N38 - cylindrical magnet

Pros as well as cons of neodymium magnets.

Advantages

Limitations

Holding force characteristics

Magnetic strength at its maximum – what affects it?

Practical aspects of lifting capacity – factors

Safety rules for work with NdFeB magnets

Serious injuries

Electronic hazard

Pacemakers

Operating temperature

Product not for children

Magnet fragility

Fire warning

Handling guide

Nickel allergy

Magnetic interference

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Shear force (wall)
MW 70x40 / N38

Table 3: Wall mounting (sliding) - vertical pull
MW 70x40 / N38

Table 4: Steel thickness (saturation) - power losses
MW 70x40 / N38

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

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

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

Table 8: Dynamics (cracking risk) - collision effects
MW 70x40 / N38

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

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

Table 11: Submerged application
MW 70x40 / N38