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MP 40x10.4/5.5x5 / N38 - ring 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

ring magnet

Catalog no 030249

GTIN/EAN: 5906301812258

5.00

Diameter

40 mm [±0,1 mm]

internal diameter Ø

10.4/5.5 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

46.23 g

Magnetization Direction

↑ axial

Load capacity

9.47 kg / 92.86 N

Magnetic Induction

150.36 mT / 1504 Gs

Coating

[NiCuNi] Nickel

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Physical properties - MP 40x10.4/5.5x5 / N38 - ring magnet

Specification / characteristics - MP 40x10.4/5.5x5 / N38 - ring magnet

properties

properties	values
Cat. no.	030249
GTIN/EAN	5906301812258
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	40 mm [±0,1 mm]
internal diameter Ø	10.4/5.5 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	46.23 g
Magnetization Direction	↑ axial
Load capacity ~ ?	9.47 kg / 92.86 N
Magnetic Induction ~ ?	150.36 mT / 1504 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 40x10.4/5.5x5 / N38 - ring 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 - data

These information constitute the outcome of a physical calculation. Results are based on algorithms for the class Nd₂Fe₁₄B. Operational conditions may deviate from the simulation results. Treat these data as a preliminary roadmap when designing systems.

Table 1: Static pull force (pull vs distance) - power drop
MP 40x10.4/5.5x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1289 Gs 128.9 mT	9.47 kg / 20.88 lbs 9470.0 g / 92.9 N	strong
1 mm	1265 Gs 126.5 mT	9.12 kg / 20.11 lbs 9120.9 g / 89.5 N	strong
2 mm	1232 Gs 123.2 mT	8.66 kg / 19.10 lbs 8662.7 g / 85.0 N	strong
3 mm	1193 Gs 119.3 mT	8.12 kg / 17.90 lbs 8121.3 g / 79.7 N	strong
5 mm	1099 Gs 109.9 mT	6.89 kg / 15.18 lbs 6887.8 g / 67.6 N	strong
10 mm	825 Gs 82.5 mT	3.88 kg / 8.56 lbs 3882.0 g / 38.1 N	strong
15 mm	580 Gs 58.0 mT	1.92 kg / 4.22 lbs 1915.5 g / 18.8 N	safe
20 mm	399 Gs 39.9 mT	0.91 kg / 2.00 lbs 908.3 g / 8.9 N	safe
30 mm	195 Gs 19.5 mT	0.22 kg / 0.48 lbs 217.6 g / 2.1 N	safe
50 mm	61 Gs 6.1 mT	0.02 kg / 0.05 lbs 21.0 g / 0.2 N	safe

Magnetic force decreases significantly with every subsequent millimeter of spacing. Note that even the smallest gap (e.g., contamination, paint, dust) strongly weakens the grip. Neodymiums hold optimally at the point of direct contact; distance kills the force. Observe how flashily the load capacity drop, when the magnet does not adhere flatly to the metal substrate. When designing the arrangement, avoid unnecessary gaps.

Table 2: Shear force (vertical surface)
MP 40x10.4/5.5x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.89 kg / 4.18 lbs 1894.0 g / 18.6 N
1 mm	Stal (~0.2)	1.82 kg / 4.02 lbs 1824.0 g / 17.9 N
2 mm	Stal (~0.2)	1.73 kg / 3.82 lbs 1732.0 g / 17.0 N
3 mm	Stal (~0.2)	1.62 kg / 3.58 lbs 1624.0 g / 15.9 N
5 mm	Stal (~0.2)	1.38 kg / 3.04 lbs 1378.0 g / 13.5 N
10 mm	Stal (~0.2)	0.78 kg / 1.71 lbs 776.0 g / 7.6 N
15 mm	Stal (~0.2)	0.38 kg / 0.85 lbs 384.0 g / 3.8 N
20 mm	Stal (~0.2)	0.18 kg / 0.40 lbs 182.0 g / 1.8 N
30 mm	Stal (~0.2)	0.04 kg / 0.10 lbs 44.0 g / 0.4 N
50 mm	Stal (~0.2)	0.00 kg / 0.01 lbs 4.0 g / 0.0 N

The following data indicates the estimated weight limit sufficient to cause the slippage of the magnet downwards against a upright steel plate (assuming typical friction coefficient). This parameter is relative to the air gap between the magnet and the surface.

Table 3: Wall mounting (sliding) - vertical pull
MP 40x10.4/5.5x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.84 kg / 6.26 lbs 2841.0 g / 27.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.89 kg / 4.18 lbs 1894.0 g / 18.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.95 kg / 2.09 lbs 947.0 g / 9.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	4.74 kg / 10.44 lbs 4735.0 g / 46.5 N

When placing a magnet on a vertical surface (e.g., a board), it you can count on only approx. 20%-30% of its nominal power. Gravity and a low friction coefficient mean that magnets slip faster than they pop off the substrate. Planning a vertical fastening? Consider that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the holder will slide down under a noticeably lighter cargo. Utilizing a rubberized layer can drastically increase the grip.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 40x10.4/5.5x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.95 kg / 2.09 lbs 947.0 g / 9.3 N
1 mm	25%	2.37 kg / 5.22 lbs 2367.5 g / 23.2 N
2 mm	50%	4.74 kg / 10.44 lbs 4735.0 g / 46.5 N
3 mm	75%	7.10 kg / 15.66 lbs 7102.5 g / 69.7 N
5 mm	100%	9.47 kg / 20.88 lbs 9470.0 g / 92.9 N
10 mm	100%	9.47 kg / 20.88 lbs 9470.0 g / 92.9 N
11 mm	100%	9.47 kg / 20.88 lbs 9470.0 g / 92.9 N
12 mm	100%	9.47 kg / 20.88 lbs 9470.0 g / 92.9 N

A thin metal plate cannot take in the entire magnetic field, which squanders power of the magnet. If you install a neodymium to a thin surface, the flux will penetrate right through and the attraction force will be weaker. To achieve 100% of this magnet's potential, you need a suitably thick backing of metal. The saturation effect means that on thin elements (e.g., appliance housings), the magnet works worse. We suggest choosing the steel cross-section according to the table below.

Table 5: Working in heat (stability) - power drop
MP 40x10.4/5.5x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	9.47 kg / 20.88 lbs 9470.0 g / 92.9 N	OK
40 °C	-2.2%	9.26 kg / 20.42 lbs 9261.7 g / 90.9 N	OK
60 °C	-4.4%	9.05 kg / 19.96 lbs 9053.3 g / 88.8 N
80 °C	-6.6%	8.84 kg / 19.50 lbs 8845.0 g / 86.8 N
100 °C	-28.8%	6.74 kg / 14.86 lbs 6742.6 g / 66.1 N

Standard neodymium magnets irreversibly lose parameters above the temperature limit. Protect against heat – excessive heat can permanently demagnetize this magnet. As the temperature rises, the magnet's capacity momentarily drops. Do not use this magnet near heat sources higher than its operating temperature limit. Exceeding the critical threshold will cause irreversible degradation of magnetism.

*Important note: Thermal stability is determined by both grade, but also on the magnet's shape. Flat magnets (pancake types) are more susceptible to demagnetization at lower temperatures than long magnets. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - field range
MP 40x10.4/5.5x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	10.73 kg / 23.65 lbs 2 424 Gs	1.61 kg / 3.55 lbs 1609 g / 15.8 N	N/A
1 mm	10.55 kg / 23.25 lbs 2 555 Gs	1.58 kg / 3.49 lbs 1582 g / 15.5 N	9.49 kg / 20.93 lbs ~0 Gs
2 mm	10.33 kg / 22.78 lbs 2 529 Gs	1.55 kg / 3.42 lbs 1550 g / 15.2 N	9.30 kg / 20.50 lbs ~0 Gs
3 mm	10.09 kg / 22.23 lbs 2 499 Gs	1.51 kg / 3.34 lbs 1513 g / 14.8 N	9.08 kg / 20.01 lbs ~0 Gs
5 mm	9.52 kg / 20.98 lbs 2 427 Gs	1.43 kg / 3.15 lbs 1427 g / 14.0 N	8.56 kg / 18.88 lbs ~0 Gs
10 mm	7.80 kg / 17.20 lbs 2 198 Gs	1.17 kg / 2.58 lbs 1170 g / 11.5 N	7.02 kg / 15.48 lbs ~0 Gs
20 mm	4.40 kg / 9.69 lbs 1 650 Gs	0.66 kg / 1.45 lbs 660 g / 6.5 N	3.96 kg / 8.72 lbs ~0 Gs
50 mm	0.49 kg / 1.09 lbs 553 Gs	0.07 kg / 0.16 lbs 74 g / 0.7 N	0.44 kg / 0.98 lbs ~0 Gs
60 mm	0.25 kg / 0.54 lbs 391 Gs	0.04 kg / 0.08 lbs 37 g / 0.4 N	0.22 kg / 0.49 lbs ~0 Gs
70 mm	0.13 kg / 0.28 lbs 282 Gs	0.02 kg / 0.04 lbs 19 g / 0.2 N	0.12 kg / 0.26 lbs ~0 Gs
80 mm	0.07 kg / 0.15 lbs 209 Gs	0.01 kg / 0.02 lbs 11 g / 0.1 N	0.06 kg / 0.14 lbs ~0 Gs
90 mm	0.04 kg / 0.09 lbs 158 Gs	0.01 kg / 0.01 lbs 6 g / 0.1 N	0.04 kg / 0.08 lbs ~0 Gs
100 mm	0.02 kg / 0.05 lbs 121 Gs	0.00 kg / 0.01 lbs 4 g / 0.0 N	0.02 kg / 0.05 lbs ~0 Gs

Two magnetic products attract each other from a significantly greater distance than a magnet and steel combination. The connection of two magnets creates a more powerful interaction and a larger range of operation. Designing a strong closure? Use a pair of magnets instead of one magnet and a striker plate. Remember that when bringing together two magnets, the impact force is extreme. The repulsion force is a bit weaker than the attraction, but still large.
*Field value for N-N configuration is approximately ~0 Gs at the midpoint between the magnets (due to field cancellation).
* Estimates demonstrate friction force of two identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - precautionary measures
MP 40x10.4/5.5x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	12.5 cm
Hearing aid	10 Gs (1.0 mT)	10.0 cm
Mechanical watch	20 Gs (2.0 mT)	8.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	6.0 cm
Car key	50 Gs (5.0 mT)	5.5 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

Powerful magnet radiation poses a real danger to electronic devices and pacemakers. These NdFeB products generate a flux that destroys function of sensitive medical devices. Notice: the invisible magnetic field penetrates the body and plastic. Exceptional care must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, car keys, speakers, and displays. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - collision effects
MP 40x10.4/5.5x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	17.75 km/h (4.93 m/s)	0.56 J
30 mm	25.36 km/h (7.04 m/s)	1.15 J
50 mm	32.32 km/h (8.98 m/s)	1.86 J
100 mm	45.65 km/h (12.68 m/s)	3.72 J

Magnetic elements are prone to chipping – a strong collision with metal causes immediate chipping. Watch the impact speed – a neodymium left loose becomes dangerous. Kinetic force can trigger coating fragments or injury to skin. Always hold the magnet during installation so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Wear eye protection when handling with large magnets.

Table 9: Corrosion resistance
MP 40x10.4/5.5x5 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (P_c)
MP 40x10.4/5.5x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	17 767 Mx	177.7 µWb
P_c Coefficient	0.17	Low (Flat)

Total magnetic flux emitted by the pole surface. Key data for generator designers as well as sensors. P_c value determines the working geometry.

Table 11: Submerged application
MP 40x10.4/5.5x5 / N38

Environment	Effective steel pull	Effect
Air (land)	9.47 kg	Standard
Water (riverbed)	10.84 kg (+1.37 kg buoyancy gain)	+14.5%

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

In water, the magnet feels stronger thanks to Archimedes' principle. Buoyancy helps in lifting finds.

1. Shear force

*Caution: On a vertical surface, the magnet retains just a fraction of its nominal pull.

2. Efficiency vs thickness

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

3. Thermal stability

*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) = 0.17

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

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: 030249-2026

Measurement Calculator

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Force in kg

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The ring-shaped magnet MP 40x10.4/5.5x5 / N38 is created for mechanical fastening, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables easy screwing to wood, wall, plastic, or metal. This product with a force of 9.47 kg works great as a cabinet closure, speaker holder, or mounting element in devices.

This is a crucial issue when working with model MP 40x10.4/5.5x5 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. When tightening the screw, you must maintain great sensitivity. We recommend tightening manually with a screwdriver, not an impact driver, because excessive force will cause the ring to crack. It's a good idea to use a rubber spacer under the screw head, which will cushion the stresses. Remember: cracking during assembly results from material properties, not a product defect.

Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. Damage to the protective layer during assembly is the most common cause of rusting. This product is dedicated for indoor use. For outdoor applications, we recommend choosing magnets in hermetic housing or additional protection with varnish.

The inner hole diameter determines the maximum size of the mounting element. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Always check that the screw head is not larger than the outer diameter of the magnet (40 mm), so it doesn't protrude beyond the outline.

It is a magnetic ring with a diameter of 40 mm and thickness 5 mm. The pulling force of this model is an impressive 9.47 kg, which translates to 92.86 N in newtons. The mounting hole diameter is precisely 10.4/5.5 mm.

The poles are located on the planes with holes, not on the sides of the ring. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Pros and cons of rare earth magnets.

Strengths

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

They have stable power, and over around 10 years their performance decreases symbolically – ~1% (according to theory),
Magnets effectively protect themselves against loss of magnetization caused by foreign field sources,
In other words, due to the glossy surface of silver, the element looks attractive,
The surface of neodymium magnets generates a concentrated 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 detailed machining as well as modifying to individual applications,
Universal use in high-tech industry – they find application in data components, electric drive systems, diagnostic systems, and modern systems.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which allows their use in compact constructions

Weaknesses

Disadvantages of NdFeB magnets:

They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
Neodymium magnets decrease their power 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
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
We suggest cover - magnetic holder, due to difficulties in producing nuts inside the magnet and complicated forms.
Health risk resulting from small fragments of magnets pose a threat, in case of ingestion, which becomes key in the context of child health protection. Furthermore, small components of these magnets can complicate diagnosis medical after entering the body.
Due to expensive raw materials, their price exceeds standard values,

Lifting parameters

Maximum lifting force for a neodymium magnet – what it depends on?

The lifting capacity listed is a result of laboratory testing executed under the following configuration:

with the use of a yoke made of special test steel, guaranteeing full magnetic saturation
possessing a thickness of minimum 10 mm to ensure full flux closure
characterized by smoothness
under conditions of gap-free contact (surface-to-surface)
during pulling in a direction vertical to the plane
in stable room temperature

Lifting capacity in real conditions – factors

During everyday use, the actual holding force results from a number of factors, presented from crucial:

Distance – existence of foreign body (rust, dirt, air) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
Load vector – highest force is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
Base massiveness – too thin plate does not accept the full field, causing part of the flux to be escaped to the other side.
Metal type – not every steel attracts identically. High carbon content weaken the attraction effect.
Base smoothness – the smoother and more polished the plate, the better the adhesion and stronger the hold. Roughness creates an air distance.
Thermal factor – hot environment reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was assessed by applying a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under shearing force the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate reduces the load capacity.

Safe handling of neodymium magnets

Risk of cracking

NdFeB magnets are ceramic materials, meaning they are fragile like glass. Impact of two magnets leads to them breaking into small pieces.

Physical harm

Big blocks can crush fingers in a fraction of a second. Do not place your hand between two attracting surfaces.

Allergy Warning

It is widely known that the nickel plating (the usual finish) is a common allergen. If your skin reacts to metals, refrain from direct skin contact and opt for versions in plastic housing.

GPS Danger

A powerful magnetic field disrupts the operation of magnetometers in phones and GPS navigation. Keep magnets near a device to avoid damaging the sensors.

Thermal limits

Standard neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.

Implant safety

Warning for patients: Strong magnetic fields disrupt electronics. Keep at least 30 cm distance or request help to work with the magnets.

Electronic hazard

Intense magnetic fields can corrupt files on credit cards, HDDs, and storage devices. Stay away of min. 10 cm.

Mechanical processing

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

Danger to the youngest

NdFeB magnets are not toys. Accidental ingestion of a few magnets may result in them attracting across intestines, which constitutes a critical condition and necessitates urgent medical intervention.

Powerful field

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

Warning! More info about hazards in the article: Safety of working with magnets.

MP 40x10.4/5.5x5 / N38 - ring magnet

Physical properties - MP 40x10.4/5.5x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the product - data

Table 1: Static pull force (pull vs distance) - power drop MP 40x10.4/5.5x5 / N38

Table 2: Shear force (vertical surface) MP 40x10.4/5.5x5 / N38

Table 3: Wall mounting (sliding) - vertical pull MP 40x10.4/5.5x5 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MP 40x10.4/5.5x5 / N38

Table 5: Working in heat (stability) - power drop MP 40x10.4/5.5x5 / N38

Table 6: Two magnets (repulsion) - field range MP 40x10.4/5.5x5 / N38

Table 7: Protective zones (electronics) - precautionary measures MP 40x10.4/5.5x5 / N38

Table 8: Dynamics (kinetic energy) - collision effects MP 40x10.4/5.5x5 / N38

Table 9: Corrosion resistance MP 40x10.4/5.5x5 / N38

Table 10: Construction data (Pc) MP 40x10.4/5.5x5 / N38

Table 11: Submerged application MP 40x10.4/5.5x5 / N38

1. Shear force

2. Efficiency vs thickness

3. Thermal stability

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

Chemical composition

Sustainability

Pulling force

Magnetic Field

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Pros and cons of rare earth magnets.

Strengths

Weaknesses

Lifting parameters

Maximum lifting force for a neodymium magnet – what it depends on?

Lifting capacity in real conditions – factors

Safe handling of neodymium magnets

Risk of cracking

Physical harm

Allergy Warning

GPS Danger

Thermal limits

Implant safety

Electronic hazard

Mechanical processing

Danger to the youngest

Powerful field

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - power drop
MP 40x10.4/5.5x5 / N38

Table 2: Shear force (vertical surface)
MP 40x10.4/5.5x5 / N38

Table 3: Wall mounting (sliding) - vertical pull
MP 40x10.4/5.5x5 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 40x10.4/5.5x5 / N38

Table 5: Working in heat (stability) - power drop
MP 40x10.4/5.5x5 / N38

Table 6: Two magnets (repulsion) - field range
MP 40x10.4/5.5x5 / N38

Table 7: Protective zones (electronics) - precautionary measures
MP 40x10.4/5.5x5 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MP 40x10.4/5.5x5 / N38

Table 9: Corrosion resistance
MP 40x10.4/5.5x5 / N38

Table 10: Construction data (P_c)
MP 40x10.4/5.5x5 / N38

Table 11: Submerged application
MP 40x10.4/5.5x5 / N38