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MW 28.9x10 / 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 010051

GTIN/EAN: 5906301810506

Diameter Ø

28.9 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

49.2 g

Magnetization Direction

→ diametrical

Load capacity

20.74 kg / 203.46 N

Magnetic Induction

352.70 mT / 3527 Gs

Coating

[NiCuNi] Nickel

product parameters »

23.99 ZŁ with VAT / pcs + price for transport

19.50 ZŁ net + 23% VAT / pcs

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Technical details - MW 28.9x10 / N38 - cylindrical magnet

Specification / characteristics - MW 28.9x10 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010051
GTIN/EAN	5906301810506
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	28.9 mm [±0,1 mm]
Height	10 mm [±0,1 mm]
Weight	49.2 g
Magnetization Direction	→ diametrical
Load capacity ~ ?	20.74 kg / 203.46 N
Magnetic Induction ~ ?	352.70 mT / 3527 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 28.9x10 / 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 magnet - data

Presented information are the direct effect of a mathematical analysis. Values rely on models for the class Nd₂Fe₁₄B. Actual conditions may deviate from the simulation results. Use these calculations as a preliminary roadmap during assembly planning.

Table 1: Static force (force vs distance) - power drop
MW 28.9x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3526 Gs 352.6 mT	20.74 kg / 45.72 lbs 20740.0 g / 203.5 N	dangerous!
1 mm	3327 Gs 332.7 mT	18.47 kg / 40.71 lbs 18466.2 g / 181.2 N	dangerous!
2 mm	3111 Gs 311.1 mT	16.14 kg / 35.59 lbs 16142.6 g / 158.4 N	dangerous!
3 mm	2886 Gs 288.6 mT	13.90 kg / 30.63 lbs 13895.8 g / 136.3 N	dangerous!
5 mm	2438 Gs 243.8 mT	9.91 kg / 21.85 lbs 9912.0 g / 97.2 N	strong
10 mm	1497 Gs 149.7 mT	3.74 kg / 8.24 lbs 3739.6 g / 36.7 N	strong
15 mm	903 Gs 90.3 mT	1.36 kg / 3.00 lbs 1359.1 g / 13.3 N	weak grip
20 mm	560 Gs 56.0 mT	0.52 kg / 1.15 lbs 523.5 g / 5.1 N	weak grip
30 mm	245 Gs 24.5 mT	0.10 kg / 0.22 lbs 100.4 g / 1.0 N	weak grip
50 mm	71 Gs 7.1 mT	0.01 kg / 0.02 lbs 8.5 g / 0.1 N	weak grip

Pulling power weakens significantly per each millimeter of distance. Keep in mind that even the smallest gap (e.g., dirt, varnish, veneer) significantly weakens the grip. Magnetic products hold strongest during direct contact; distance weakens the force. Notice how rapidly the load capacity drop, when the magnet does not adhere directly to the metal substrate. When designing the arrangement, eliminate additional spacers.

Table 2: Shear hold (vertical surface)
MW 28.9x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	4.15 kg / 9.14 lbs 4148.0 g / 40.7 N
1 mm	Stal (~0.2)	3.69 kg / 8.14 lbs 3694.0 g / 36.2 N
2 mm	Stal (~0.2)	3.23 kg / 7.12 lbs 3228.0 g / 31.7 N
3 mm	Stal (~0.2)	2.78 kg / 6.13 lbs 2780.0 g / 27.3 N
5 mm	Stal (~0.2)	1.98 kg / 4.37 lbs 1982.0 g / 19.4 N
10 mm	Stal (~0.2)	0.75 kg / 1.65 lbs 748.0 g / 7.3 N
15 mm	Stal (~0.2)	0.27 kg / 0.60 lbs 272.0 g / 2.7 N
20 mm	Stal (~0.2)	0.10 kg / 0.23 lbs 104.0 g / 1.0 N
30 mm	Stal (~0.2)	0.02 kg / 0.04 lbs 20.0 g / 0.2 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 g / 0.0 N

The table below calculates the estimated holding capacity needed to initiate the downward movement of the magnet downwards along a upright metal surface (assuming standard friction). This parameter is a function of the gap size between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 28.9x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	6.22 kg / 13.72 lbs 6222.0 g / 61.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	4.15 kg / 9.14 lbs 4148.0 g / 40.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	2.07 kg / 4.57 lbs 2074.0 g / 20.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	10.37 kg / 22.86 lbs 10370.0 g / 101.7 N

When hanging a holder on a upright wall (e.g., a board), it will only hold barely about 1/5 of its nominal power. Gravity and a low friction coefficient influence the fact that products move down easier than they pop off the substrate. Planning a wall mount? Remember that the shear force is significantly lower than the perpendicular breakaway force. On a painted metal, the magnet will give way down under a significantly smaller load. Application of an anti-slip coating can significantly raise the stability.

Table 4: Steel thickness (saturation) - sheet metal selection
MW 28.9x10 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	1.04 kg / 2.29 lbs 1037.0 g / 10.2 N
1 mm	13%	2.59 kg / 5.72 lbs 2592.5 g / 25.4 N
2 mm	25%	5.19 kg / 11.43 lbs 5185.0 g / 50.9 N
3 mm	38%	7.78 kg / 17.15 lbs 7777.5 g / 76.3 N
5 mm	63%	12.96 kg / 28.58 lbs 12962.5 g / 127.2 N
10 mm	100%	20.74 kg / 45.72 lbs 20740.0 g / 203.5 N
11 mm	100%	20.74 kg / 45.72 lbs 20740.0 g / 203.5 N
12 mm	100%	20.74 kg / 45.72 lbs 20740.0 g / 203.5 N

A thin metal plate is unable to absorb the full magnetic flux, which squanders power of the holder. Should you install a neodymium to a thin surface, the field will pass right through and the holding will be smaller. To squeeze the maximum of this neodymium's potential, you require a sufficiently solid backing of steel. The saturation effect causes that on delicate walls (e.g., appliance housings), the holder shows lower pull force. We advise picking the steel dimension according to the table below.

Table 5: Working in heat (material behavior) - resistance threshold
MW 28.9x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	20.74 kg / 45.72 lbs 20740.0 g / 203.5 N	OK
40 °C	-2.2%	20.28 kg / 44.72 lbs 20283.7 g / 199.0 N	OK
60 °C	-4.4%	19.83 kg / 43.71 lbs 19827.4 g / 194.5 N
80 °C	-6.6%	19.37 kg / 42.71 lbs 19371.2 g / 190.0 N
100 °C	-28.8%	14.77 kg / 32.56 lbs 14766.9 g / 144.9 N

Standard neodymium magnets irreversibly lose strength above the temperature limit. Avoid high temperatures – high temperature can irreversibly destroy this product. With every degree above norm, the neodymium's power briefly lowers. Do not use this magnet in hot environments exceeding its working range. Too high temperature will lead to permanent loss of magnetic properties.

*Important note: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low permeance coefficient) are more susceptible to demagnetization under lower heat stress than long magnets. Red status in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MW 28.9x10 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	50.29 kg / 110.86 lbs 5 022 Gs	7.54 kg / 16.63 lbs 7543 g / 74.0 N	N/A
1 mm	47.58 kg / 104.90 lbs 6 860 Gs	7.14 kg / 15.74 lbs 7138 g / 70.0 N	42.83 kg / 94.41 lbs ~0 Gs
2 mm	44.77 kg / 98.71 lbs 6 655 Gs	6.72 kg / 14.81 lbs 6716 g / 65.9 N	40.30 kg / 88.84 lbs ~0 Gs
3 mm	41.95 kg / 92.48 lbs 6 441 Gs	6.29 kg / 13.87 lbs 6292 g / 61.7 N	37.75 kg / 83.23 lbs ~0 Gs
5 mm	36.38 kg / 80.20 lbs 5 999 Gs	5.46 kg / 12.03 lbs 5457 g / 53.5 N	32.74 kg / 72.18 lbs ~0 Gs
10 mm	24.03 kg / 52.98 lbs 4 876 Gs	3.60 kg / 7.95 lbs 3605 g / 35.4 N	21.63 kg / 47.69 lbs ~0 Gs
20 mm	9.07 kg / 19.99 lbs 2 995 Gs	1.36 kg / 3.00 lbs 1360 g / 13.3 N	8.16 kg / 17.99 lbs ~0 Gs
50 mm	0.53 kg / 1.17 lbs 726 Gs	0.08 kg / 0.18 lbs 80 g / 0.8 N	0.48 kg / 1.06 lbs ~0 Gs
60 mm	0.24 kg / 0.54 lbs 491 Gs	0.04 kg / 0.08 lbs 37 g / 0.4 N	0.22 kg / 0.48 lbs ~0 Gs
70 mm	0.12 kg / 0.26 lbs 345 Gs	0.02 kg / 0.04 lbs 18 g / 0.2 N	0.11 kg / 0.24 lbs ~0 Gs
80 mm	0.06 kg / 0.14 lbs 250 Gs	0.01 kg / 0.02 lbs 9 g / 0.1 N	0.06 kg / 0.13 lbs ~0 Gs
90 mm	0.04 kg / 0.08 lbs 187 Gs	0.01 kg / 0.01 lbs 5 g / 0.1 N	0.03 kg / 0.07 lbs ~0 Gs
100 mm	0.02 kg / 0.05 lbs 143 Gs	0.00 kg / 0.01 lbs 3 g / 0.0 N	0.02 kg / 0.04 lbs ~0 Gs

Two magnetic products attract each other from a much further distance than a magnet and steel combination. The setup of magnet-to-magnet creates a more powerful interaction and a wider radius of operation. Planning to create a solid fastener? Apply two magnets instead of a neodymium and a striker plate. Remember that when connecting a pair of magnets, the impact force is huge. The levitation is a bit weaker than the connection force, but still significant.
*Field value between like poles is approximately ~0 Gs at the midpoint of the gap (resulting from vector opposition).
Note: Estimates show sliding force of a pair of identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Hazards (implants) - warnings
MW 28.9x10 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	13.5 cm
Hearing aid	10 Gs (1.0 mT)	10.5 cm
Mechanical watch	20 Gs (2.0 mT)	8.5 cm
Mobile device	40 Gs (4.0 mT)	6.5 cm
Remote	50 Gs (5.0 mT)	6.0 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

Powerful magnet radiation is a serious hazard to IT equipment and pacemakers. These magnets generate a flux that prevents correct functioning of sensitive medical devices. Be aware: the invisible magnetic field passes through tissues and plastic. Special caution must be exercised by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, car keys, speakers, and displays. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MW 28.9x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.92 km/h (6.37 m/s)	1.00 J
30 mm	35.97 km/h (9.99 m/s)	2.46 J
50 mm	46.31 km/h (12.86 m/s)	4.07 J
100 mm	65.48 km/h (18.19 m/s)	8.14 J

NdFeB products are very brittle – a strong collision with metal risks their cracking. Watch the impact speed – a neodymium left loose speeds with massive force. Striking energy can cause material chips or painful pinches to skin. Always hold the magnet during mounting so it doesn't hit violently against the steel surface. 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: Anti-corrosion coating durability
MW 28.9x10 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (Flux)
MW 28.9x10 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	24 347 Mx	243.5 µWb
P_c Coefficient	0.45	Low (Flat)

Total magnetic flux passing through the magnet pole. Key data in coil applications as well as sensors. The P_c coefficient defines the magnet's operating point.

Table 11: Physics of underwater searching
MW 28.9x10 / N38

Environment	Effective steel pull	Effect
Air (land)	20.74 kg	Standard
Water (riverbed)	23.75 kg (+3.01 kg buoyancy gain)	+14.5%

Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

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

2. Plate thickness effect

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

3. Heat tolerance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.45

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical specification and ecology

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: 010051-2026

Measurement Calculator

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MW 5x30 / N38 - cylindrical magnet

3.57 ZŁ brutto / pcs

The presented product is a very strong cylindrical magnet, composed of advanced NdFeB material, which, at dimensions of Ø28.9x10 mm, guarantees maximum efficiency. The MW 28.9x10 / N38 component features high dimensional repeatability and industrial build quality, making it an excellent solution for the most demanding engineers and designers. As a magnetic rod with impressive force (approx. 20.74 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is perfect for building electric motors, advanced sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the pull force of 203.46 N with a weight of only 49.2 g, this rod is indispensable in electronics and wherever low weight is crucial.

Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 28.9.1 mm) using two-component 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 popular standard for professional neodymium magnets, offering a great economic balance and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø28.9x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

The presented product is a neodymium magnet with precisely defined parameters: diameter 28.9 mm and height 10 mm. The key parameter here is the holding force amounting to approximately 20.74 kg (force ~203.46 N), which, with such compact dimensions, proves the high power of the NdFeB material. 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 10 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.

Strengths as well as weaknesses of neodymium magnets.

Advantages

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

They do not lose strength, even over nearly 10 years – the reduction in power is only ~1% (according to tests),
They do not lose their magnetic properties even under external field action,
Thanks to the metallic finish, the coating of nickel, gold, or silver gives an aesthetic appearance,
Neodymium magnets deliver maximum magnetic induction on a contact point, which allows for strong attraction,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
In view of the ability of flexible molding and customization to custom projects, magnetic components can be modeled in a wide range of forms and dimensions, which makes them more universal,
Key role in advanced technology sectors – they find application in hard drives, electric drive systems, medical equipment, also industrial machines.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which makes them useful in compact constructions

Limitations

Disadvantages of neodymium magnets:

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
We recommend cover - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complex forms.
Potential hazard resulting from small fragments of magnets can be dangerous, if swallowed, which becomes key in the context of child safety. Additionally, small components of these devices can be problematic in diagnostics medical after entering the body.
Due to complex production process, their price exceeds standard values,

Pull force analysis

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

The specified lifting capacity concerns the peak performance, measured under laboratory conditions, meaning:

on a block made of structural steel, effectively closing the magnetic field
possessing a thickness of min. 10 mm to avoid saturation
with a surface free of scratches
under conditions of gap-free contact (surface-to-surface)
for force acting at a right angle (in the magnet axis)
at standard ambient temperature

Determinants of lifting force in real conditions

During everyday use, the real power results from many variables, listed from most significant:

Space between magnet and steel – every millimeter of distance (caused e.g. by varnish or dirt) diminishes the pulling force, often by half at just 0.5 mm.
Force direction – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits much less (typically approx. 20-30% of maximum force).
Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
Chemical composition of the base – mild steel attracts best. Higher carbon content decrease magnetic permeability and holding force.
Plate texture – ground elements ensure maximum contact, which increases force. Uneven metal reduce efficiency.
Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a small distance between the magnet and the plate reduces the load capacity.

H&S for magnets

Crushing force

Big blocks can crush fingers instantly. Do not put your hand betwixt two attracting surfaces.

No play value

Neodymium magnets are not toys. Swallowing several magnets can lead to them pinching intestinal walls, which poses a severe health hazard and requires urgent medical intervention.

Safe operation

Before starting, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.

Life threat

People with a pacemaker have to keep an absolute distance from magnets. The magnetism can interfere with the operation of the implant.

Warning for allergy sufferers

Nickel alert: The Ni-Cu-Ni coating contains nickel. If skin irritation happens, immediately stop working with magnets and wear gloves.

Keep away from computers

Intense magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

Compass and GPS

Remember: rare earth magnets produce a field that confuses sensitive sensors. Maintain a safe distance from your phone, device, and GPS.

Do not drill into magnets

Fire hazard: Rare earth powder is explosive. Avoid machining magnets in home conditions as this risks ignition.

Maximum temperature

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

Beware of splinters

NdFeB magnets are ceramic materials, which means they are very brittle. Impact of two magnets will cause them shattering into shards.

Caution! Need more info? Read our article: Are neodymium magnets dangerous?

MW 28.9x10 / N38 - cylindrical magnet

Technical details - MW 28.9x10 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the magnet - data

Table 1: Static force (force vs distance) - power drop MW 28.9x10 / N38

Table 2: Shear hold (vertical surface) MW 28.9x10 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MW 28.9x10 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MW 28.9x10 / N38

Table 5: Working in heat (material behavior) - resistance threshold MW 28.9x10 / N38

Table 6: Two magnets (repulsion) - forces in the system MW 28.9x10 / N38

Table 7: Hazards (implants) - warnings MW 28.9x10 / N38

Table 8: Impact energy (kinetic energy) - warning MW 28.9x10 / N38

Table 9: Anti-corrosion coating durability MW 28.9x10 / N38

Table 10: Construction data (Flux) MW 28.9x10 / N38

Table 11: Physics of underwater searching MW 28.9x10 / N38

1. Shear force

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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MP 8x6/3.5x3 / N38 - ring magnet

MW 5x30 / N38 - cylindrical magnet

Strengths as well as weaknesses of neodymium magnets.

Advantages

Limitations

Pull force analysis

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

Determinants of lifting force in real conditions

H&S for magnets

Crushing force

No play value

Safe operation

Life threat

Warning for allergy sufferers

Keep away from computers

Compass and GPS

Do not drill into magnets

Maximum temperature

Beware of splinters

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - power drop
MW 28.9x10 / N38

Table 2: Shear hold (vertical surface)
MW 28.9x10 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 28.9x10 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MW 28.9x10 / N38

Table 5: Working in heat (material behavior) - resistance threshold
MW 28.9x10 / N38

Table 6: Two magnets (repulsion) - forces in the system
MW 28.9x10 / N38

Table 7: Hazards (implants) - warnings
MW 28.9x10 / N38

Table 8: Impact energy (kinetic energy) - warning
MW 28.9x10 / N38

Table 9: Anti-corrosion coating durability
MW 28.9x10 / N38

Table 10: Construction data (Flux)
MW 28.9x10 / N38

Table 11: Physics of underwater searching
MW 28.9x10 / N38