Product available Ships tomorrow

MW 70x30 / 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 010096

GTIN/EAN: 5906301810957

5.00

Diameter Ø

70 mm [±0,1 mm]

Height

30 mm [±0,1 mm]

Weight

865.9 g

Magnetization Direction

↑ axial

Load capacity

144.18 kg / 1414.37 N

Magnetic Induction

403.43 mT / 4034 Gs

Coating

[NiCuNi] Nickel

check specifications »

317.17 ZŁ with VAT / pcs + price for transport

257.86 ZŁ net + 23% VAT / pcs

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Technical of the product - MW 70x30 / N38 - cylindrical magnet

Specification / characteristics - MW 70x30 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010096
GTIN/EAN	5906301810957
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	30 mm [±0,1 mm]
Weight	865.9 g
Magnetization Direction	↑ axial
Load capacity ~ ?	144.18 kg / 1414.37 N
Magnetic Induction ~ ?	403.43 mT / 4034 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 70x30 / 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 - technical parameters

Presented values represent the outcome of a engineering simulation. Results are based on algorithms for the class Nd₂Fe₁₄B. Real-world performance might slightly differ. Please consider these data as a reference point when designing systems.

Table 1: Static pull force (pull vs gap) - power drop
MW 70x30 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4034 Gs 403.4 mT	144.18 kg / 317.86 pounds 144180.0 g / 1414.4 N	crushing
1 mm	3934 Gs 393.4 mT	137.11 kg / 302.27 pounds 137108.9 g / 1345.0 N	crushing
2 mm	3830 Gs 383.0 mT	129.96 kg / 286.52 pounds 129962.6 g / 1274.9 N	crushing
3 mm	3724 Gs 372.4 mT	122.86 kg / 270.87 pounds 122863.7 g / 1205.3 N	crushing
5 mm	3507 Gs 350.7 mT	108.99 kg / 240.28 pounds 108989.8 g / 1069.2 N	crushing
10 mm	2963 Gs 296.3 mT	77.77 kg / 171.46 pounds 77773.1 g / 763.0 N	crushing
15 mm	2452 Gs 245.2 mT	53.26 kg / 117.41 pounds 53257.6 g / 522.5 N	crushing
20 mm	2003 Gs 200.3 mT	35.55 kg / 78.38 pounds 35554.2 g / 348.8 N	crushing
30 mm	1321 Gs 132.1 mT	15.45 kg / 34.06 pounds 15450.6 g / 151.6 N	crushing
50 mm	601 Gs 60.1 mT	3.20 kg / 7.05 pounds 3199.7 g / 31.4 N	strong

Grip strength drops sharply with every mm of spacing. Keep in mind that even a microscopic distance (e.g., dirt, varnish, dust) strongly reduces the pull force. Magnets operate strongest during direct contact; distance weakens the force. Notice how quickly the pull force drop, when the magnet does not touch tightly to the steel surface. When planning the assembly, avoid additional spacers.

Table 2: Shear hold (wall)
MW 70x30 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	28.84 kg / 63.57 pounds 28836.0 g / 282.9 N
1 mm	Stal (~0.2)	27.42 kg / 60.46 pounds 27422.0 g / 269.0 N
2 mm	Stal (~0.2)	25.99 kg / 57.30 pounds 25992.0 g / 255.0 N
3 mm	Stal (~0.2)	24.57 kg / 54.17 pounds 24572.0 g / 241.1 N
5 mm	Stal (~0.2)	21.80 kg / 48.06 pounds 21798.0 g / 213.8 N
10 mm	Stal (~0.2)	15.55 kg / 34.29 pounds 15554.0 g / 152.6 N
15 mm	Stal (~0.2)	10.65 kg / 23.48 pounds 10652.0 g / 104.5 N
20 mm	Stal (~0.2)	7.11 kg / 15.67 pounds 7110.0 g / 69.7 N
30 mm	Stal (~0.2)	3.09 kg / 6.81 pounds 3090.0 g / 30.3 N
50 mm	Stal (~0.2)	0.64 kg / 1.41 pounds 640.0 g / 6.3 N

The table below defines the estimated shear load necessary to start the sliding of the magnet vertically along a vertical metal surface (considering standard friction coefficient). This value is relative to the gap size between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 70x30 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	43.25 kg / 95.36 pounds 43254.0 g / 424.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	28.84 kg / 63.57 pounds 28836.0 g / 282.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	14.42 kg / 31.79 pounds 14418.0 g / 141.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	72.09 kg / 158.93 pounds 72090.0 g / 707.2 N

When placing a holder on a vertical surface (e.g., a fridge), it will only hold only approx. 20%-30% of its nominal power. Gravitational force and a weak degree of grip cause that magnets move down faster than they detach. Designing a wall mount? Note that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the element will slip down under a noticeably lighter cargo. Utilizing a rubberized layer can significantly raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 70x30 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	4.81 kg / 10.60 pounds 4806.0 g / 47.1 N
1 mm	8%	12.01 kg / 26.49 pounds 12015.0 g / 117.9 N
2 mm	17%	24.03 kg / 52.98 pounds 24030.0 g / 235.7 N
3 mm	25%	36.05 kg / 79.47 pounds 36045.0 g / 353.6 N
5 mm	42%	60.08 kg / 132.44 pounds 60075.0 g / 589.3 N
10 mm	83%	120.15 kg / 264.89 pounds 120150.0 g / 1178.7 N
11 mm	92%	132.17 kg / 291.37 pounds 132165.0 g / 1296.5 N
12 mm	100%	144.18 kg / 317.86 pounds 144180.0 g / 1414.4 N

A thin sheet is unable to focus the entire magnetic field, which squanders power of the holder. If you install a neodymium to a thin surface, the flux will penetrate right through and the holding will be smaller. To squeeze full efficiency of this neodymium's power, you need a suitably thick element of metal. The saturation phenomenon means that on thin elements (e.g., car bodies), the holder shows lower pull force. We recommend selecting the steel thickness according to the table below.

Table 5: Thermal resistance (stability) - thermal limit
MW 70x30 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	144.18 kg / 317.86 pounds 144180.0 g / 1414.4 N	OK
40 °C	-2.2%	141.01 kg / 310.87 pounds 141008.0 g / 1383.3 N	OK
60 °C	-4.4%	137.84 kg / 303.88 pounds 137836.1 g / 1352.2 N
80 °C	-6.6%	134.66 kg / 296.88 pounds 134664.1 g / 1321.1 N
100 °C	-28.8%	102.66 kg / 226.32 pounds 102656.2 g / 1007.1 N

Ordinary NdFeB products lose parameters past the thermal threshold. Protect against heat – excessive heat can irreversibly demagnetize this magnet. As the temperature rises, the magnet's power momentarily decreases. Avoid using this magnet near heat sources higher than its operating temperature limit. Ignoring the limit will cause permanent loss of magnetism.

*Engineering note: Thermal stability depends not only on the material grade, as well as the dimension ratios. Flat magnets (pancake types) are more susceptible to demagnetization sooner than long magnets. Red status in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MW 70x30 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	386.08 kg / 851.15 pounds 5 354 Gs	57.91 kg / 127.67 pounds 57911 g / 568.1 N	N/A
1 mm	376.71 kg / 830.51 pounds 7 969 Gs	56.51 kg / 124.58 pounds 56507 g / 554.3 N	339.04 kg / 747.46 pounds ~0 Gs
2 mm	367.14 kg / 809.41 pounds 7 867 Gs	55.07 kg / 121.41 pounds 55071 g / 540.2 N	330.43 kg / 728.47 pounds ~0 Gs
3 mm	357.57 kg / 788.30 pounds 7 764 Gs	53.63 kg / 118.24 pounds 53635 g / 526.2 N	321.81 kg / 709.47 pounds ~0 Gs
5 mm	338.48 kg / 746.21 pounds 7 554 Gs	50.77 kg / 111.93 pounds 50772 g / 498.1 N	304.63 kg / 671.59 pounds ~0 Gs
10 mm	291.85 kg / 643.41 pounds 7 014 Gs	43.78 kg / 96.51 pounds 43777 g / 429.5 N	262.66 kg / 579.07 pounds ~0 Gs
20 mm	208.26 kg / 459.13 pounds 5 925 Gs	31.24 kg / 68.87 pounds 31238 g / 306.4 N	187.43 kg / 413.21 pounds ~0 Gs
50 mm	62.81 kg / 138.47 pounds 3 254 Gs	9.42 kg / 20.77 pounds 9421 g / 92.4 N	56.53 kg / 124.62 pounds ~0 Gs
60 mm	41.37 kg / 91.21 pounds 2 641 Gs	6.21 kg / 13.68 pounds 6206 g / 60.9 N	37.24 kg / 82.09 pounds ~0 Gs
70 mm	27.41 kg / 60.43 pounds 2 150 Gs	4.11 kg / 9.06 pounds 4112 g / 40.3 N	24.67 kg / 54.39 pounds ~0 Gs
80 mm	18.35 kg / 40.46 pounds 1 759 Gs	2.75 kg / 6.07 pounds 2753 g / 27.0 N	16.52 kg / 36.41 pounds ~0 Gs
90 mm	12.45 kg / 27.44 pounds 1 449 Gs	1.87 kg / 4.12 pounds 1867 g / 18.3 N	11.20 kg / 24.70 pounds ~0 Gs
100 mm	8.57 kg / 18.89 pounds 1 202 Gs	1.29 kg / 2.83 pounds 1285 g / 12.6 N	7.71 kg / 17.00 pounds ~0 Gs

Two magnets attract each other from a wider radius than a magnet and steel setup. Such a system of two magnets generates a stronger field and a further horizon of operation. Designing a strong closure? Use a pair of magnets instead of a neodymium and a steel. Remember that when attracting two neodymiums, the impact force is massive. The levitation is a bit weaker than the connection force, but still impressive.
*Field value in repulsion mode reaches ~0 Gs in the exact middle of the gap (caused by magnetic field nullification).
* Estimates apply to sliding force of a pair of same neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 70x30 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	34.5 cm
Hearing aid	10 Gs (1.0 mT)	27.0 cm
Timepiece	20 Gs (2.0 mT)	21.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	16.5 cm
Car key	50 Gs (5.0 mT)	15.0 cm
Payment card	400 Gs (40.0 mT)	6.5 cm
HDD hard drive	600 Gs (60.0 mT)	5.5 cm

Powerful magnet radiation is a large risk to electronic devices as well as pacemakers. These magnets generate a field that prevents correct functioning of digital equipment. Notice: the invisible magnetic field passes through tissues and housings. Special caution must be exercised by people with cochlear implants and drug dispensers. Also at risk are: automatic timepieces, remotes, speakers, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Collisions (cracking risk) - collision effects
MW 70x30 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	16.84 km/h (4.68 m/s)	9.47 J
30 mm	24.00 km/h (6.67 m/s)	19.25 J
50 mm	29.50 km/h (8.19 m/s)	29.07 J
100 mm	41.18 km/h (11.44 m/s)	56.66 J

NdFeB products are delicate – a violent impact against metal causes immediate chipping. Watch the impact speed – a magnet released freely becomes dangerous. Impact energy can trigger coating fragments or injury to fingers. Always hold the magnet during installation 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 neodymium. Wear eye protection when playing with large magnets.

Table 9: Surface protection spec
MW 70x30 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MW 70x30 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	159 225 Mx	1592.3 µWb
P_c Coefficient	0.53	Low (Flat)

Flux value emitted by the pole surface. Essential parameter for generator designers as well as sensors. The P_c coefficient defines the working geometry.

Table 11: Underwater work (magnet fishing)
MW 70x30 / N38

Environment	Effective steel pull	Effect
Air (land)	144.18 kg	Standard
Water (riverbed)	165.09 kg (+20.91 kg buoyancy gain)	+14.5%

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

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

1. Wall mount (shear)

*Caution: On a vertical surface, the magnet holds just a fraction of its max power.

2. Plate thickness effect

*Thin steel (e.g. computer case) significantly reduces 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) = 0.53

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 and environmental data

Elemental analysis

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: 010096-2026

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The presented product is a very strong cylinder magnet, composed of advanced NdFeB material, which, at dimensions of Ø70x30 mm, guarantees the highest energy density. The MW 70x30 / N38 model is characterized by high dimensional repeatability and professional build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 144.18 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

This model is created for building electric motors, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 1414.37 N with a weight of only 865.9 g, this rod is indispensable in miniature devices and wherever every gram matters.

Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 70.1 mm) using two-component epoxy glues. To ensure stability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.

Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need even stronger magnets in the same volume (Ø70x30), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

This model is characterized by dimensions Ø70x30 mm, which, at a weight of 865.9 g, makes it an element with impressive magnetic energy density. The value of 1414.37 N means that the magnet is capable of holding a weight many times exceeding its own mass of 865.9 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 30 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 diametrically if your project requires it.

Advantages as well as disadvantages of rare earth magnets.

Benefits

Besides their high retention, neodymium magnets are valued for these benefits:

They have unchanged lifting capacity, and over around 10 years their performance decreases symbolically – ~1% (according to theory),
They are resistant to demagnetization induced by external field influence,
By using a lustrous layer of gold, the element acquires an modern look,
Neodymium magnets achieve maximum magnetic induction on a their surface, which ensures high operational effectiveness,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
Possibility of precise machining as well as modifying to concrete needs,
Significant place in modern technologies – they are commonly used in computer drives, electromotive mechanisms, diagnostic systems, also multitasking production systems.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Characteristics of disadvantages of neodymium magnets and proposals for their use:

They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
Due to limitations in realizing nuts and complicated forms in magnets, we recommend using casing - magnetic mount.
Possible danger related to microscopic parts of magnets are risky, in case of ingestion, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these magnets can disrupt the diagnostic process medical when they are in the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

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

The specified lifting capacity represents the maximum value, recorded under optimal environment, meaning:

using a sheet made of mild steel, acting as a ideal flux conductor
whose thickness reaches at least 10 mm
characterized by smoothness
with total lack of distance (no paint)
during detachment in a direction vertical to the plane
at conditions approx. 20°C

Practical lifting capacity: influencing factors

During everyday use, the real power is determined by a number of factors, listed from most significant:

Distance – existence of foreign body (rust, tape, gap) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
Angle of force application – highest force is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly many times smaller (approx. 1/5 of the lifting capacity).
Base massiveness – too thin steel causes magnetic saturation, causing part of the flux to be lost into the air.
Steel type – low-carbon steel attracts best. Higher carbon content decrease magnetic permeability and lifting capacity.
Base smoothness – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
Heat – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was measured using a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet and the plate decreases the load capacity.

H&S for magnets

Handling rules

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

Material brittleness

Protect your eyes. Magnets can explode upon violent connection, ejecting sharp fragments into the air. Eye protection is mandatory.

No play value

Always keep magnets out of reach of children. Choking hazard is high, and the consequences of magnets clamping inside the body are tragic.

Dust is flammable

Machining of NdFeB material poses a fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Thermal limits

Monitor thermal conditions. Heating the magnet to high heat will permanently weaken its magnetic structure and pulling force.

GPS and phone interference

Be aware: neodymium magnets produce a field that confuses precision electronics. Keep a safe distance from your mobile, device, and navigation systems.

Pinching danger

Big blocks can smash fingers instantly. Under no circumstances place your hand between two attracting surfaces.

Cards and drives

Avoid bringing magnets close to a wallet, computer, or TV. The magnetism can permanently damage these devices and wipe information from cards.

Avoid contact if allergic

Some people have a hypersensitivity to nickel, which is the typical protective layer for NdFeB magnets. Prolonged contact can result in dermatitis. It is best to wear safety gloves.

Medical implants

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

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

MW 70x30 / N38 - cylindrical magnet

Technical of the product - MW 70x30 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the assembly - technical parameters

Table 1: Static pull force (pull vs gap) - power drop MW 70x30 / N38

Table 2: Shear hold (wall) MW 70x30 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MW 70x30 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MW 70x30 / N38

Table 5: Thermal resistance (stability) - thermal limit MW 70x30 / N38

Table 6: Two magnets (repulsion) - forces in the system MW 70x30 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures MW 70x30 / N38

Table 8: Collisions (cracking risk) - collision effects MW 70x30 / N38

Table 9: Surface protection spec MW 70x30 / N38

Table 10: Construction data (Flux) MW 70x30 / N38

Table 11: Underwater work (magnet fishing) MW 70x30 / N38

1. Wall mount (shear)

2. Plate thickness effect

3. Thermal stability

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

Elemental analysis

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Induction

Other products

UMC 42x7/4x9 / N38 - cylindrical magnetic holder

SM 32x350 [2xM8] / N42 - magnetic separator

KM HF - 34,5 kg - magnetic bracket

SM 25x125 [2xM8] / N42 - magnetic separator

Advantages as well as disadvantages of rare earth magnets.

Benefits

Disadvantages

Pull force analysis

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

Practical lifting capacity: influencing factors

H&S for magnets

Handling rules

Material brittleness

No play value

Dust is flammable

Thermal limits

GPS and phone interference

Pinching danger

Cards and drives

Avoid contact if allergic

Medical implants

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - power drop
MW 70x30 / N38

Table 2: Shear hold (wall)
MW 70x30 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 70x30 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MW 70x30 / N38

Table 5: Thermal resistance (stability) - thermal limit
MW 70x30 / N38

Table 6: Two magnets (repulsion) - forces in the system
MW 70x30 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 70x30 / N38

Table 8: Collisions (cracking risk) - collision effects
MW 70x30 / N38

Table 9: Surface protection spec
MW 70x30 / N38

Table 10: Construction data (Flux)
MW 70x30 / N38

Table 11: Underwater work (magnet fishing)
MW 70x30 / N38