Product available Ships today (order by 14:00)

MW 70x50 / 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 010496

GTIN/EAN: 5906301811145

Diameter Ø

70 mm [±0,1 mm]

Height

50 mm [±0,1 mm]

Weight

1443.17 g

Magnetization Direction

↑ axial

Load capacity

168.21 kg / 1650.14 N

Magnetic Induction

507.83 mT / 5078 Gs

Coating

[NiCuNi] Nickel

view parameters »

516.60 ZŁ with VAT / pcs + price for transport

420.00 ZŁ net + 23% VAT / pcs

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Technical data - MW 70x50 / N38 - cylindrical magnet

Specification / characteristics - MW 70x50 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010496
GTIN/EAN	5906301811145
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	50 mm [±0,1 mm]
Weight	1443.17 g
Magnetization Direction	↑ axial
Load capacity ~ ?	168.21 kg / 1650.14 N
Magnetic Induction ~ ?	507.83 mT / 5078 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 70x50 / 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

Physical modeling of the assembly - technical parameters

These values are the outcome of a physical analysis. Results were calculated on models for the material Nd₂Fe₁₄B. Actual conditions might slightly deviate from the simulation results. Treat these data as a reference point for designers.

Table 1: Static force (force vs distance) - characteristics
MW 70x50 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5078 Gs 507.8 mT	168.21 kg / 370.84 pounds 168210.0 g / 1650.1 N	dangerous!
1 mm	4935 Gs 493.5 mT	158.88 kg / 350.26 pounds 158876.4 g / 1558.6 N	dangerous!
2 mm	4790 Gs 479.0 mT	149.67 kg / 329.96 pounds 149666.1 g / 1468.2 N	dangerous!
3 mm	4644 Gs 464.4 mT	140.71 kg / 310.21 pounds 140708.8 g / 1380.4 N	dangerous!
5 mm	4354 Gs 435.4 mT	123.67 kg / 272.64 pounds 123667.4 g / 1213.2 N	dangerous!
10 mm	3652 Gs 365.2 mT	87.02 kg / 191.84 pounds 87016.1 g / 853.6 N	dangerous!
15 mm	3017 Gs 301.7 mT	59.37 kg / 130.88 pounds 59366.6 g / 582.4 N	dangerous!
20 mm	2469 Gs 246.9 mT	39.78 kg / 87.70 pounds 39781.3 g / 390.3 N	dangerous!
30 mm	1645 Gs 164.5 mT	17.66 kg / 38.93 pounds 17659.3 g / 173.2 N	dangerous!
50 mm	773 Gs 77.3 mT	3.89 kg / 8.59 pounds 3895.0 g / 38.2 N	strong

Grip strength weakens drastically per each millimeter of spacing. Remember that even a very thin break (e.g., contamination, paint, veneer) noticeably diminishes the holding power. Magnets operate most effectively in perfect adhesion; distance drastically cuts the power. Analyze how flashily the load capacity fall, when the magnet does not touch tightly to the metal substrate. When calculating the arrangement, eliminate unnecessary gaps.

Table 2: Shear capacity (wall)
MW 70x50 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	33.64 kg / 74.17 pounds 33642.0 g / 330.0 N
1 mm	Stal (~0.2)	31.78 kg / 70.05 pounds 31776.0 g / 311.7 N
2 mm	Stal (~0.2)	29.93 kg / 65.99 pounds 29934.0 g / 293.7 N
3 mm	Stal (~0.2)	28.14 kg / 62.04 pounds 28142.0 g / 276.1 N
5 mm	Stal (~0.2)	24.73 kg / 54.53 pounds 24734.0 g / 242.6 N
10 mm	Stal (~0.2)	17.40 kg / 38.37 pounds 17404.0 g / 170.7 N
15 mm	Stal (~0.2)	11.87 kg / 26.18 pounds 11874.0 g / 116.5 N
20 mm	Stal (~0.2)	7.96 kg / 17.54 pounds 7956.0 g / 78.0 N
30 mm	Stal (~0.2)	3.53 kg / 7.79 pounds 3532.0 g / 34.6 N
50 mm	Stal (~0.2)	0.78 kg / 1.72 pounds 778.0 g / 7.6 N

The following data defines the theoretical holding capacity sufficient to cause the sliding of the magnet downwards along a upright steel plate (considering standard friction). This parameter is relative to the distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - vertical pull
MW 70x50 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	50.46 kg / 111.25 pounds 50463.0 g / 495.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	33.64 kg / 74.17 pounds 33642.0 g / 330.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	16.82 kg / 37.08 pounds 16821.0 g / 165.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	84.11 kg / 185.42 pounds 84105.0 g / 825.1 N

When hanging a holder on a upright plane (e.g., a fridge), it you can count on barely about 1/5 of nominal attraction strength. Gravitational force and a low friction coefficient cause that holders slide down easier than they detach. Planning a wall mount? Consider that the sliding force is much weaker than the maximum static pull force. On a painted metal, the magnet will slip down under a much lighter cargo. Application of an anti-slip coating can effectively raise the stability.

Table 4: Steel thickness (saturation) - power losses
MW 70x50 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	5.61 kg / 12.36 pounds 5607.0 g / 55.0 N
1 mm	8%	14.02 kg / 30.90 pounds 14017.5 g / 137.5 N
2 mm	17%	28.03 kg / 61.81 pounds 28035.0 g / 275.0 N
3 mm	25%	42.05 kg / 92.71 pounds 42052.5 g / 412.5 N
5 mm	42%	70.09 kg / 154.52 pounds 70087.5 g / 687.6 N
10 mm	83%	140.18 kg / 309.03 pounds 140175.0 g / 1375.1 N
11 mm	92%	154.19 kg / 339.94 pounds 154192.5 g / 1512.6 N
12 mm	100%	168.21 kg / 370.84 pounds 168210.0 g / 1650.1 N

A thin sheet is unable to take in the full magnetic flux, which wastes potential of the magnet. If you install a neodymium to a weak sheet, the flux will pass right through and the attraction force will be weaker. To squeeze full efficiency of this neodymium's power, you require a sufficiently solid element of steel. The saturation phenomenon means that on delicate walls (e.g., car bodies), the product shows lower pull force. We recommend selecting the steel dimension based on the following data.

Table 5: Thermal stability (material behavior) - thermal limit
MW 70x50 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	168.21 kg / 370.84 pounds 168210.0 g / 1650.1 N	OK
40 °C	-2.2%	164.51 kg / 362.68 pounds 164509.4 g / 1613.8 N	OK
60 °C	-4.4%	160.81 kg / 354.52 pounds 160808.8 g / 1577.5 N	OK
80 °C	-6.6%	157.11 kg / 346.36 pounds 157108.1 g / 1541.2 N
100 °C	-28.8%	119.77 kg / 264.04 pounds 119765.5 g / 1174.9 N

Standard neodymium magnets irreversibly lose strength after exceeding the maximum temperature. Watch out for overheating – excessive heat can irreversibly demagnetize this magnet. With every degree above norm, the neodymium's power briefly decreases. Avoid using this product close to ovens higher than its working range. Too high temperature will lead to permanent loss of magnetic properties.

*Technical advisory: Heat tolerance is determined by both grade, as well as the dimension ratios. Flat magnets (pancake types) may lose charge permanently at lower temperatures compared to rod magnets. The danger warning in the table signals a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 70x50 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	611.75 kg / 1348.67 pounds 5 850 Gs	91.76 kg / 202.30 pounds 91762 g / 900.2 N	N/A
1 mm	594.86 kg / 1311.43 pounds 10 014 Gs	89.23 kg / 196.72 pounds 89229 g / 875.3 N	535.37 kg / 1180.29 pounds ~0 Gs
2 mm	577.80 kg / 1273.84 pounds 9 870 Gs	86.67 kg / 191.08 pounds 86670 g / 850.2 N	520.02 kg / 1146.45 pounds ~0 Gs
3 mm	560.95 kg / 1236.68 pounds 9 725 Gs	84.14 kg / 185.50 pounds 84142 g / 825.4 N	504.85 kg / 1113.01 pounds ~0 Gs
5 mm	527.90 kg / 1163.81 pounds 9 434 Gs	79.18 kg / 174.57 pounds 79184 g / 776.8 N	475.11 kg / 1047.43 pounds ~0 Gs
10 mm	449.75 kg / 991.54 pounds 8 708 Gs	67.46 kg / 148.73 pounds 67463 g / 661.8 N	404.78 kg / 892.38 pounds ~0 Gs
20 mm	316.46 kg / 697.68 pounds 7 304 Gs	47.47 kg / 104.65 pounds 47469 g / 465.7 N	284.81 kg / 627.91 pounds ~0 Gs
50 mm	96.30 kg / 212.30 pounds 4 029 Gs	14.44 kg / 31.85 pounds 14445 g / 141.7 N	86.67 kg / 191.07 pounds ~0 Gs
60 mm	64.22 kg / 141.59 pounds 3 291 Gs	9.63 kg / 21.24 pounds 9634 g / 94.5 N	57.80 kg / 127.43 pounds ~0 Gs
70 mm	43.17 kg / 95.18 pounds 2 698 Gs	6.48 kg / 14.28 pounds 6476 g / 63.5 N	38.86 kg / 85.66 pounds ~0 Gs
80 mm	29.36 kg / 64.73 pounds 2 225 Gs	4.40 kg / 9.71 pounds 4404 g / 43.2 N	26.43 kg / 58.26 pounds ~0 Gs
90 mm	20.25 kg / 44.63 pounds 1 847 Gs	3.04 kg / 6.69 pounds 3037 g / 29.8 N	18.22 kg / 40.17 pounds ~0 Gs
100 mm	14.17 kg / 31.23 pounds 1 545 Gs	2.12 kg / 4.68 pounds 2125 g / 20.8 N	12.75 kg / 28.11 pounds ~0 Gs

Two magnetic products 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 action. Planning to create a solid fastener? Use a pair of magnets instead of a neodymium and a striker plate. Be careful that when bringing together two magnets, the pinch force is massive. The repulsion force is a bit weaker than the connection force, but still impressive.
*The magnetic induction between like poles drops to ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
Important: Figures refer to sliding force of a pair of identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 70x50 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	40.0 cm
Hearing aid	10 Gs (1.0 mT)	31.5 cm
Timepiece	20 Gs (2.0 mT)	24.5 cm
Mobile device	40 Gs (4.0 mT)	19.0 cm
Remote	50 Gs (5.0 mT)	17.5 cm
Payment card	400 Gs (40.0 mT)	7.5 cm
HDD hard drive	600 Gs (60.0 mT)	6.0 cm

Powerful magnet radiation is a large risk to electronic devices and pacemakers. These NdFeB products produce a field that prevents correct functioning of digital equipment. Notice: the unseen radiation acts through matter and plastic. Increased vigilance must be taken by people with cochlear implants and insulin pumps. The risk also applies to: automatic timepieces, remotes, membranes, and screens. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - warning
MW 70x50 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	13.97 km/h (3.88 m/s)	10.87 J
30 mm	20.06 km/h (5.57 m/s)	22.40 J
50 mm	24.70 km/h (6.86 m/s)	33.96 J
100 mm	34.46 km/h (9.57 m/s)	66.12 J

Neodymium magnets are delicate – a violent impact against metal can result in shattering. Control the attraction moment – a neodymium left loose 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 hit with great force against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear eye protection when playing with powerful specimens.

Table 9: Corrosion resistance
MW 70x50 / 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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (P_c)
MW 70x50 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	197 145 Mx	1971.5 µWb
P_c Coefficient	0.74	High (Stable)

Flux value passing through the pole surface. Key data in coil applications as well as sensors. The P_c coefficient defines the working geometry.

Table 11: Submerged application
MW 70x50 / N38

Environment	Effective steel pull	Effect
Air (land)	168.21 kg	Standard
Water (riverbed)	192.60 kg (+24.39 kg buoyancy gain)	+14.5%

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

Contrary to myths, water does not block the magnetic field. However, remember the water resistance when pulling the rope quickly.

1. Sliding resistance

*Warning: On a vertical wall, the magnet retains only approx. 20-30% of its perpendicular strength.

2. Plate thickness effect

*Thin metal sheet (e.g. 0.5mm PC case) drastically reduces the holding force.

3. Heat tolerance

*For standard magnets, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.74

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

Chemical composition

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

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: 010496-2026

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The offered product is an extremely powerful cylinder magnet, made from durable NdFeB material, which, at dimensions of Ø70x50 mm, guarantees maximum efficiency. This specific item is characterized by a tolerance of ±0.1mm and industrial build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 168.21 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is ideal for building electric motors, advanced sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the pull force of 1650.14 N with a weight of only 1443.17 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 epoxy glues. To ensure long-term durability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering a great economic balance and high resistance to demagnetization. If you need even stronger magnets in the same volume (Ø70x50), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

This model is characterized by dimensions Ø70x50 mm, which, at a weight of 1443.17 g, makes it an element with impressive magnetic energy density. The value of 1650.14 N means that the magnet is capable of holding a weight many times exceeding its own mass of 1443.17 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 50 mm), which means that the N and S poles are located on the flat, circular surfaces. 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 through the diameter if your project requires it.

Advantages as well as disadvantages of rare earth magnets.

Pros

Apart from their superior power, neodymium magnets have these key benefits:

Their power is maintained, and after around ten years it decreases only by ~1% (according to research),
They retain their magnetic properties even under external field action,
The use of an shiny coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
Magnetic induction on the surface of the magnet remains impressive,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures approaching 230°C and above...
Possibility of precise shaping and adjusting to concrete conditions,
Versatile presence in advanced technology sectors – they are used in data components, motor assemblies, diagnostic systems, also other advanced devices.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which enables their usage in miniature devices

Weaknesses

Characteristics of disadvantages of neodymium magnets: tips and applications.

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a strong case, which not only secures them against impacts but also raises their durability
When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
Limited ability of creating nuts in the magnet and complicated forms - preferred is casing - magnetic holder.
Health risk resulting from small fragments of magnets pose a threat, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small elements of these products are able to disrupt the diagnostic process medical after entering the body.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Magnetic strength at its maximum – what contributes to it?

The lifting capacity listed is a theoretical maximum value performed under specific, ideal conditions:

with the application of a yoke made of low-carbon steel, ensuring maximum field concentration
whose transverse dimension reaches at least 10 mm
with a surface free of scratches
with zero gap (without coatings)
under axial application of breakaway force (90-degree angle)
in neutral thermal conditions

Determinants of lifting force in real conditions

Real force is affected by specific conditions, such as (from priority):

Air gap (between the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) results in a reduction in force by up to 50% (this also applies to varnish, rust or debris).
Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
Plate material – low-carbon steel attracts best. Alloy steels reduce magnetic permeability and lifting capacity.
Surface condition – ground elements ensure maximum contact, which improves field saturation. Uneven metal weaken the grip.
Temperature – temperature increase causes a temporary drop of force. Check the maximum operating temperature for a given model.

Lifting capacity was determined with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, however under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate decreases the load capacity.

Precautions when working with NdFeB magnets

Mechanical processing

Combustion risk: Neodymium dust is explosive. Avoid machining magnets without safety gear as this risks ignition.

Magnets are brittle

Despite the nickel coating, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.

Protect data

Avoid bringing magnets near a wallet, computer, or TV. The magnetic field can irreversibly ruin these devices and wipe information from cards.

Bone fractures

Large magnets can break fingers in a fraction of a second. Under no circumstances place your hand betwixt two strong magnets.

Nickel coating and allergies

Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If redness occurs, cease handling magnets and use protective gear.

Compass and GPS

Be aware: neodymium magnets generate a field that disrupts precision electronics. Maintain a safe distance from your phone, tablet, and GPS.

Medical interference

Warning for patients: Powerful magnets affect medical devices. Maintain at least 30 cm distance or ask another person to work with the magnets.

Handling guide

Be careful. Rare earth magnets act from a long distance and connect with massive power, often faster than you can move away.

Do not give to children

Adult use only. Small elements can be swallowed, causing serious injuries. Keep away from kids and pets.

Demagnetization risk

Regular neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. This process is irreversible.

Safety First! More info about risks in the article: Safety of working with magnets.

MW 70x50 / N38 - cylindrical magnet

Technical data - MW 70x50 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the assembly - technical parameters

Table 1: Static force (force vs distance) - characteristics MW 70x50 / N38

Table 2: Shear capacity (wall) MW 70x50 / N38

Table 3: Wall mounting (sliding) - vertical pull MW 70x50 / N38

Table 4: Steel thickness (saturation) - power losses MW 70x50 / N38

Table 5: Thermal stability (material behavior) - thermal limit MW 70x50 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MW 70x50 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures MW 70x50 / N38

Table 8: Dynamics (cracking risk) - warning MW 70x50 / N38

Table 9: Corrosion resistance MW 70x50 / N38

Table 10: Electrical data (Pc) MW 70x50 / N38

Table 11: Submerged application MW 70x50 / N38

1. Sliding resistance

2. Plate thickness effect

3. Heat tolerance

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

Chemical composition

Sustainability

Magnet pull force

Magnetic Induction

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MW 9.5x1 / N38 - cylindrical magnet

SM 25x175 [2xM8] / N52 - magnetic separator

Advantages as well as disadvantages of rare earth magnets.

Pros

Weaknesses

Lifting parameters

Magnetic strength at its maximum – what contributes to it?

Determinants of lifting force in real conditions

Precautions when working with NdFeB magnets

Mechanical processing

Magnets are brittle

Protect data

Bone fractures

Nickel coating and allergies

Compass and GPS

Medical interference

Handling guide

Do not give to children

Demagnetization risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - characteristics
MW 70x50 / N38

Table 2: Shear capacity (wall)
MW 70x50 / N38

Table 3: Wall mounting (sliding) - vertical pull
MW 70x50 / N38

Table 4: Steel thickness (saturation) - power losses
MW 70x50 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MW 70x50 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 70x50 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 70x50 / N38

Table 8: Dynamics (cracking risk) - warning
MW 70x50 / N38

Table 9: Corrosion resistance
MW 70x50 / N38

Table 10: Electrical data (P_c)
MW 70x50 / N38

Table 11: Submerged application
MW 70x50 / N38