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MW 40x15 / 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 010067

GTIN/EAN: 5906301810667

Diameter Ø

40 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

141.37 g

Magnetization Direction

↑ axial

Load capacity

42.64 kg / 418.33 N

Magnetic Induction

371.91 mT / 3719 Gs

Coating

[NiCuNi] Nickel

view technical specifications »

65.93 ZŁ with VAT / pcs + price for transport

53.60 ZŁ net + 23% VAT / pcs

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Technical of the product - MW 40x15 / N38 - cylindrical magnet

Specification / characteristics - MW 40x15 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010067
GTIN/EAN	5906301810667
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	40 mm [±0,1 mm]
Height	15 mm [±0,1 mm]
Weight	141.37 g
Magnetization Direction	↑ axial
Load capacity ~ ?	42.64 kg / 418.33 N
Magnetic Induction ~ ?	371.91 mT / 3719 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 40x15 / 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 simulation of the product - report

These information constitute the result of a physical analysis. Values were calculated on models for the material Nd₂Fe₁₄B. Actual conditions might slightly differ. Use these data as a reference point when designing systems.

Table 1: Static force (force vs gap) - power drop
MW 40x15 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3718 Gs 371.8 mT	42.64 kg / 94.00 LBS 42640.0 g / 418.3 N	dangerous!
1 mm	3563 Gs 356.3 mT	39.16 kg / 86.33 LBS 39159.5 g / 384.2 N	dangerous!
2 mm	3398 Gs 339.8 mT	35.62 kg / 78.52 LBS 35617.1 g / 349.4 N	dangerous!
3 mm	3228 Gs 322.8 mT	32.13 kg / 70.84 LBS 32130.5 g / 315.2 N	dangerous!
5 mm	2880 Gs 288.0 mT	25.58 kg / 56.40 LBS 25584.2 g / 251.0 N	dangerous!
10 mm	2069 Gs 206.9 mT	13.20 kg / 29.09 LBS 13196.7 g / 129.5 N	dangerous!
15 mm	1439 Gs 143.9 mT	6.38 kg / 14.07 LBS 6383.1 g / 62.6 N	medium risk
20 mm	999 Gs 99.9 mT	3.08 kg / 6.79 LBS 3077.9 g / 30.2 N	medium risk
30 mm	507 Gs 50.7 mT	0.79 kg / 1.75 LBS 792.4 g / 7.8 N	safe
50 mm	169 Gs 16.9 mT	0.09 kg / 0.19 LBS 88.4 g / 0.9 N	safe

Grip strength weakens significantly with every mm of distance. Remember that even the smallest gap (e.g., contamination, varnish, veneer) significantly diminishes the holding power. Magnets operate strongest in perfect adhesion; gap nullifies the power. Analyze how rapidly the pull force plummet, when the magnet does not touch tightly to the metal substrate. When designing the arrangement, eliminate additional spacers.

Table 2: Vertical hold (wall)
MW 40x15 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	8.53 kg / 18.80 LBS 8528.0 g / 83.7 N
1 mm	Stal (~0.2)	7.83 kg / 17.27 LBS 7832.0 g / 76.8 N
2 mm	Stal (~0.2)	7.12 kg / 15.71 LBS 7124.0 g / 69.9 N
3 mm	Stal (~0.2)	6.43 kg / 14.17 LBS 6426.0 g / 63.0 N
5 mm	Stal (~0.2)	5.12 kg / 11.28 LBS 5116.0 g / 50.2 N
10 mm	Stal (~0.2)	2.64 kg / 5.82 LBS 2640.0 g / 25.9 N
15 mm	Stal (~0.2)	1.28 kg / 2.81 LBS 1276.0 g / 12.5 N
20 mm	Stal (~0.2)	0.62 kg / 1.36 LBS 616.0 g / 6.0 N
30 mm	Stal (~0.2)	0.16 kg / 0.35 LBS 158.0 g / 1.5 N
50 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 18.0 g / 0.2 N

The table below defines the approximate weight limit necessary to cause the shifting of the magnet down on a vertical steel plate (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 40x15 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	12.79 kg / 28.20 LBS 12792.0 g / 125.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	8.53 kg / 18.80 LBS 8528.0 g / 83.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	4.26 kg / 9.40 LBS 4264.0 g / 41.8 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	21.32 kg / 47.00 LBS 21320.0 g / 209.1 N

When mounting a element on a upright wall (e.g., a fridge), it will maintain barely about 20%-30% of its maximum pull force. Gravitational force as well as a low friction coefficient influence the fact that holders slide down easier than they pull off. Want to create a wall mount? Note that the sliding force is noticeably lower than the maximum static pull force. On a smooth steel, the magnet will slide down under a significantly smaller weight. Application of an anti-slip pad can significantly increase the grip.

Table 4: Material efficiency (saturation) - power losses
MW 40x15 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	2.13 kg / 4.70 LBS 2132.0 g / 20.9 N
1 mm	13%	5.33 kg / 11.75 LBS 5330.0 g / 52.3 N
2 mm	25%	10.66 kg / 23.50 LBS 10660.0 g / 104.6 N
3 mm	38%	15.99 kg / 35.25 LBS 15990.0 g / 156.9 N
5 mm	63%	26.65 kg / 58.75 LBS 26650.0 g / 261.4 N
10 mm	100%	42.64 kg / 94.00 LBS 42640.0 g / 418.3 N
11 mm	100%	42.64 kg / 94.00 LBS 42640.0 g / 418.3 N
12 mm	100%	42.64 kg / 94.00 LBS 42640.0 g / 418.3 N

A thin metal plate is unable to take in the entire magnetic field, which squanders power of the magnet. If you attach a powerful product to a too thin substrate, the field will penetrate right through and the holding will be smaller. To achieve the maximum of this magnet's potential, you need a suitably thick backing of steel. The material oversaturation means that on sheet metal structures (e.g., thin profiles), the holder shows lower pull force. We advise picking the steel dimension according to the table below.

Table 5: Working in heat (stability) - resistance threshold
MW 40x15 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	42.64 kg / 94.00 LBS 42640.0 g / 418.3 N	OK
40 °C	-2.2%	41.70 kg / 91.94 LBS 41701.9 g / 409.1 N	OK
60 °C	-4.4%	40.76 kg / 89.87 LBS 40763.8 g / 399.9 N
80 °C	-6.6%	39.83 kg / 87.80 LBS 39825.8 g / 390.7 N
100 °C	-28.8%	30.36 kg / 66.93 LBS 30359.7 g / 297.8 N

Ordinary NdFeB products irreversibly lose parameters after exceeding the maximum temperature. Watch out for overheating – excessive heat can permanently destroy this product. With increasing heat, the magnet's force momentarily drops. Do not use this magnet near heat sources exceeding its safe range. Too high temperature will result in irreversible degradation of magnetic properties.

*Important note: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Low-profile magnets (low Pc) are more susceptible to demagnetization under lower heat stress than long magnets. The danger warning in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field range
MW 40x15 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	107.12 kg / 236.16 LBS 5 156 Gs	16.07 kg / 35.42 LBS 16068 g / 157.6 N	N/A
1 mm	102.82 kg / 226.67 LBS 7 286 Gs	15.42 kg / 34.00 LBS 15422 g / 151.3 N	92.53 kg / 204.00 LBS ~0 Gs
2 mm	98.38 kg / 216.89 LBS 7 127 Gs	14.76 kg / 32.53 LBS 14757 g / 144.8 N	88.54 kg / 195.20 LBS ~0 Gs
3 mm	93.92 kg / 207.06 LBS 6 964 Gs	14.09 kg / 31.06 LBS 14088 g / 138.2 N	84.53 kg / 186.36 LBS ~0 Gs
5 mm	85.07 kg / 187.55 LBS 6 627 Gs	12.76 kg / 28.13 LBS 12760 g / 125.2 N	76.56 kg / 168.79 LBS ~0 Gs
10 mm	64.27 kg / 141.70 LBS 5 761 Gs	9.64 kg / 21.25 LBS 9641 g / 94.6 N	57.85 kg / 127.53 LBS ~0 Gs
20 mm	33.15 kg / 73.09 LBS 4 137 Gs	4.97 kg / 10.96 LBS 4973 g / 48.8 N	29.84 kg / 65.78 LBS ~0 Gs
50 mm	3.84 kg / 8.47 LBS 1 408 Gs	0.58 kg / 1.27 LBS 576 g / 5.7 N	3.46 kg / 7.62 LBS ~0 Gs
60 mm	1.99 kg / 4.39 LBS 1 014 Gs	0.30 kg / 0.66 LBS 299 g / 2.9 N	1.79 kg / 3.95 LBS ~0 Gs
70 mm	1.08 kg / 2.38 LBS 747 Gs	0.16 kg / 0.36 LBS 162 g / 1.6 N	0.97 kg / 2.14 LBS ~0 Gs
80 mm	0.61 kg / 1.35 LBS 563 Gs	0.09 kg / 0.20 LBS 92 g / 0.9 N	0.55 kg / 1.22 LBS ~0 Gs
90 mm	0.36 kg / 0.80 LBS 432 Gs	0.05 kg / 0.12 LBS 54 g / 0.5 N	0.33 kg / 0.72 LBS ~0 Gs
100 mm	0.22 kg / 0.49 LBS 339 Gs	0.03 kg / 0.07 LBS 33 g / 0.3 N	0.20 kg / 0.44 LBS ~0 Gs

Two strong neodymiums attract each other from a wider radius than a neodymium and metal combination. Such a system of two magnets generates a stronger field and a larger range of operation. Want to build a strong closure? Utilize two neodymiums instead of a neodymium and a steel. Be careful that when connecting a pair of magnets, the collision energy is massive. The levitation is slightly lower than the attraction, but still impressive.
*Field value for N-N configuration is approximately ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Attention: Results apply to friction force of dual identical magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - precautionary measures
MW 40x15 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	19.0 cm
Hearing aid	10 Gs (1.0 mT)	15.0 cm
Timepiece	20 Gs (2.0 mT)	11.5 cm
Mobile device	40 Gs (4.0 mT)	9.0 cm
Car key	50 Gs (5.0 mT)	8.5 cm
Payment card	400 Gs (40.0 mT)	3.5 cm
HDD hard drive	600 Gs (60.0 mT)	3.0 cm

Powerful magnet radiation poses a serious hazard to electronics and medical implants. These NdFeB products generate a field that destroys function of digital equipment. Remember: the invisible magnetic field penetrates the body and plastic. Exceptional care must be taken by people with hearing aids and drug dispensers. Influence will be felt by: automatic timepieces, remotes, membranes, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - warning
MW 40x15 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	20.63 km/h (5.73 m/s)	2.32 J
30 mm	30.69 km/h (8.52 m/s)	5.14 J
50 mm	39.22 km/h (10.89 m/s)	8.39 J
100 mm	55.39 km/h (15.39 m/s)	16.73 J

Neodymium magnets are very brittle – a collision with steel risks their cracking. Control the attraction moment – a neodymium left loose turns into a projectile. Striking energy can trigger coating fragments or painful pinches to skin. Hold the magnet firmly during bringing near metal so it doesn't slam with momentum against the steel surface. A collision at high speed ends with a crack of the magnet. Use safety goggles when playing with powerful specimens.

Table 9: Corrosion resistance
MW 40x15 / 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: Electrical data (Flux)
MW 40x15 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	48 650 Mx	486.5 µWb
P_c Coefficient	0.48	Low (Flat)

Flux value passing through the pole surface. Essential parameter in coil applications and motors. P_c value defines the working geometry.

Table 11: Physics of underwater searching
MW 40x15 / N38

Environment	Effective steel pull	Effect
Air (land)	42.64 kg	Standard
Water (riverbed)	48.82 kg (+6.18 kg buoyancy gain)	+14.5%

Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.

1. Sliding resistance

*Note: On a vertical surface, the magnet retains just approx. 20-30% of its perpendicular strength.

2. Plate thickness effect

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

3. Temperature resistance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.48

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 specification and ecology

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%

Environmental data

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: 010067-2026

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This product is a very strong rod magnet, produced from durable NdFeB material, which, with dimensions of Ø40x15 mm, guarantees optimal power. The MW 40x15 / N38 model is characterized by high dimensional repeatability and industrial build quality, making it an excellent solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 42.64 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 418.33 N with a weight of only 141.37 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.

Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 40.1 mm) using epoxy glues. To ensure long-term durability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Magnets NdFeB grade N38 are strong enough for the majority of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø40x15), 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 Ø40x15 mm, which, at a weight of 141.37 g, makes it an element with high magnetic energy density. The value of 418.33 N means that the magnet is capable of holding a weight many times exceeding its own mass of 141.37 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 40 mm. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized diametrically if your project requires it.

Advantages and disadvantages of rare earth magnets.

Pros

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

They do not lose power, even over nearly 10 years – the decrease in power is only ~1% (according to tests),
They maintain their magnetic properties even under close interference source,
Thanks to the smooth finish, the layer of nickel, gold-plated, or silver-plated gives an modern appearance,
The surface of neodymium magnets generates a maximum magnetic field – this is a distinguishing feature,
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 accurate forming and adjusting to defined needs,
Versatile presence in modern technologies – they are used in HDD drives, electromotive mechanisms, medical devices, and technologically advanced constructions.
Thanks to their power density, small magnets offer high operating force, with minimal size,

Limitations

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
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
Due to limitations in creating nuts and complicated forms in magnets, we recommend using cover - magnetic mount.
Possible danger resulting from small fragments of magnets are risky, in case of ingestion, which gains importance in the aspect of protecting the youngest. It is also worth noting that small components of these devices can disrupt the diagnostic process medical after entering the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Detachment force of the magnet in optimal conditions – what it depends on?

The specified lifting capacity refers to the peak performance, measured under laboratory conditions, specifically:

using a sheet made of low-carbon steel, acting as a circuit closing element
possessing a thickness of at least 10 mm to ensure full flux closure
with a surface cleaned and smooth
without any air gap between the magnet and steel
under perpendicular force direction (90-degree angle)
in neutral thermal conditions

What influences lifting capacity in practice

During everyday use, the actual holding force is determined by a number of factors, ranked from crucial:

Space between surfaces – every millimeter of distance (caused e.g. by veneer or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
Steel thickness – insufficiently thick steel does not close the flux, causing part of the flux to be escaped into the air.
Material type – the best choice is high-permeability steel. Hardened steels may attract less.
Plate texture – smooth surfaces ensure maximum contact, which increases field saturation. Rough surfaces weaken the grip.
Operating temperature – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under perpendicular forces, however under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.

Warnings

Warning for allergy sufferers

Certain individuals suffer from a sensitization to Ni, which is the common plating for neodymium magnets. Prolonged contact can result in an allergic reaction. We strongly advise wear protective gloves.

Combustion hazard

Combustion risk: Neodymium dust is highly flammable. Do not process magnets in home conditions as this may cause fire.

Hand protection

Big blocks can smash fingers instantly. Under no circumstances place your hand between two strong magnets.

Demagnetization risk

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

Medical implants

People with a pacemaker have to keep an safe separation from magnets. The magnetism can disrupt the functioning of the implant.

Magnetic media

Data protection: Neodymium magnets can damage payment cards and sensitive devices (pacemakers, medical aids, mechanical watches).

GPS and phone interference

Be aware: rare earth magnets generate a field that disrupts precision electronics. Keep a safe distance from your phone, device, and navigation systems.

Material brittleness

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Handling rules

Use magnets with awareness. Their huge power can shock even experienced users. Be vigilant and respect their force.

Swallowing risk

NdFeB magnets are not intended for children. Eating a few magnets may result in them attracting across intestines, which constitutes a direct threat to life and necessitates urgent medical intervention.

Warning! Want to know more? Read our article: Are neodymium magnets dangerous?

MW 40x15 / N38 - cylindrical magnet

Technical of the product - MW 40x15 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the product - report

Table 1: Static force (force vs gap) - power drop MW 40x15 / N38

Table 2: Vertical hold (wall) MW 40x15 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MW 40x15 / N38

Table 4: Material efficiency (saturation) - power losses MW 40x15 / N38

Table 5: Working in heat (stability) - resistance threshold MW 40x15 / N38

Table 6: Two magnets (attraction) - field range MW 40x15 / N38

Table 7: Safety (HSE) (implants) - precautionary measures MW 40x15 / N38

Table 8: Collisions (kinetic energy) - warning MW 40x15 / N38

Table 9: Corrosion resistance MW 40x15 / N38

Table 10: Electrical data (Flux) MW 40x15 / N38

Table 11: Physics of underwater searching MW 40x15 / N38

1. Sliding resistance

2. Plate thickness effect

3. Temperature resistance

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

Elemental analysis

Environmental data

Magnet pull force

Magnetic Field

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MW 40x10 / N38 - cylindrical magnet

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Advantages and disadvantages of rare earth magnets.

Pros

Limitations

Holding force characteristics

Detachment force of the magnet in optimal conditions – what it depends on?

What influences lifting capacity in practice

Warnings

Warning for allergy sufferers

Combustion hazard

Hand protection

Demagnetization risk

Medical implants

Magnetic media

GPS and phone interference

Material brittleness

Handling rules

Swallowing risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - power drop
MW 40x15 / N38

Table 2: Vertical hold (wall)
MW 40x15 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 40x15 / N38

Table 4: Material efficiency (saturation) - power losses
MW 40x15 / N38

Table 5: Working in heat (stability) - resistance threshold
MW 40x15 / N38

Table 6: Two magnets (attraction) - field range
MW 40x15 / N38

Table 7: Safety (HSE) (implants) - precautionary measures
MW 40x15 / N38

Table 8: Collisions (kinetic energy) - warning
MW 40x15 / N38

Table 9: Corrosion resistance
MW 40x15 / N38

Table 10: Electrical data (Flux)
MW 40x15 / N38

Table 11: Physics of underwater searching
MW 40x15 / N38