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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

check parameters »

27.00 ZŁ with VAT / pcs + price for transport

21.95 ZŁ net + 23% VAT / pcs

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Technical - 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

Technical modeling of the product - report

The following values are the outcome of a physical calculation. Results rely on algorithms for the class Nd₂Fe₁₄B. Actual parameters might slightly deviate from the simulation results. Please consider these data as a preliminary roadmap for designers.

Table 1: Static pull force (force vs distance) - characteristics
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 pounds 9470.0 g / 92.9 N	strong
1 mm	1265 Gs 126.5 mT	9.12 kg / 20.11 pounds 9120.9 g / 89.5 N	strong
2 mm	1232 Gs 123.2 mT	8.66 kg / 19.10 pounds 8662.7 g / 85.0 N	strong
3 mm	1193 Gs 119.3 mT	8.12 kg / 17.90 pounds 8121.3 g / 79.7 N	strong
5 mm	1099 Gs 109.9 mT	6.89 kg / 15.18 pounds 6887.8 g / 67.6 N	strong
10 mm	825 Gs 82.5 mT	3.88 kg / 8.56 pounds 3882.0 g / 38.1 N	strong
15 mm	580 Gs 58.0 mT	1.92 kg / 4.22 pounds 1915.5 g / 18.8 N	low risk
20 mm	399 Gs 39.9 mT	0.91 kg / 2.00 pounds 908.3 g / 8.9 N	low risk
30 mm	195 Gs 19.5 mT	0.22 kg / 0.48 pounds 217.6 g / 2.1 N	low risk
50 mm	61 Gs 6.1 mT	0.02 kg / 0.05 pounds 21.0 g / 0.2 N	low risk

Pulling power drops significantly with every mm of gap. Note that even the smallest gap (e.g., dirt, paint, veneer) significantly diminishes the holding power. Magnetic products work optimally at the point of direct contact; air break drastically cuts the power. Analyze how rapidly the pull force plummet, when the magnet does not adhere flatly to the steel surface. When planning the mounting, discard additional spacers.

Table 2: Sliding load (wall)
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 pounds 1894.0 g / 18.6 N
1 mm	Stal (~0.2)	1.82 kg / 4.02 pounds 1824.0 g / 17.9 N
2 mm	Stal (~0.2)	1.73 kg / 3.82 pounds 1732.0 g / 17.0 N
3 mm	Stal (~0.2)	1.62 kg / 3.58 pounds 1624.0 g / 15.9 N
5 mm	Stal (~0.2)	1.38 kg / 3.04 pounds 1378.0 g / 13.5 N
10 mm	Stal (~0.2)	0.78 kg / 1.71 pounds 776.0 g / 7.6 N
15 mm	Stal (~0.2)	0.38 kg / 0.85 pounds 384.0 g / 3.8 N
20 mm	Stal (~0.2)	0.18 kg / 0.40 pounds 182.0 g / 1.8 N
30 mm	Stal (~0.2)	0.04 kg / 0.10 pounds 44.0 g / 0.4 N
50 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N

The following data indicates the approximate weight limit sufficient to cause the sliding of the magnet downwards on a upright steel wall (assuming typical friction). This value is relative to the air gap between the magnet and the surface.

Table 3: Vertical assembly (shearing) - 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 pounds 2841.0 g / 27.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.89 kg / 4.18 pounds 1894.0 g / 18.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.95 kg / 2.09 pounds 947.0 g / 9.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	4.74 kg / 10.44 pounds 4735.0 g / 46.5 N

When mounting a holder on a upright wall (e.g., a car body), it will only hold just approx. 1/5 of its nominal power. Gravitational force as well as a low friction coefficient influence the fact that magnets slide down easier than they pop off the substrate. Want to create a wall mount? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the element will give way down under a much lighter load. Utilizing a rubberized coating can significantly raise the stability.

Table 4: Material efficiency (substrate influence) - power losses
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 pounds 947.0 g / 9.3 N
1 mm	25%	2.37 kg / 5.22 pounds 2367.5 g / 23.2 N
2 mm	50%	4.74 kg / 10.44 pounds 4735.0 g / 46.5 N
3 mm	75%	7.10 kg / 15.66 pounds 7102.5 g / 69.7 N
5 mm	100%	9.47 kg / 20.88 pounds 9470.0 g / 92.9 N
10 mm	100%	9.47 kg / 20.88 pounds 9470.0 g / 92.9 N
11 mm	100%	9.47 kg / 20.88 pounds 9470.0 g / 92.9 N
12 mm	100%	9.47 kg / 20.88 pounds 9470.0 g / 92.9 N

A thin sheet is unable to conduct the entire magnetic field, which wastes potential of the holder. If you install a neodymium to a thin surface, the field will penetrate right through and the pull force will drop sharply. To squeeze 100% of this neodymium's potential, you need a suitably thick piece of metal. The saturation effect causes that on sheet metal structures (e.g., appliance housings), the magnet holds weaker. We advise picking the steel dimension based on the following data.

Table 5: Thermal stability (stability) - thermal limit
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 pounds 9470.0 g / 92.9 N	OK
40 °C	-2.2%	9.26 kg / 20.42 pounds 9261.7 g / 90.9 N	OK
60 °C	-4.4%	9.05 kg / 19.96 pounds 9053.3 g / 88.8 N
80 °C	-6.6%	8.84 kg / 19.50 pounds 8845.0 g / 86.8 N
100 °C	-28.8%	6.74 kg / 14.86 pounds 6742.6 g / 66.1 N

Classic neodymiums lose strength above the temperature limit. Protect against heat – excessive heat can irreversibly demagnetize this magnet. With increasing heat, the neodymium's capacity temporarily decreases. Refrain from using this product in hot environments higher than its operating temperature limit. Exceeding the critical threshold will result in irreversible degradation of magnetic properties.

*Important note: Thermal stability is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low Pc) risk losing magnetic properties under lower heat stress than long magnets. Red status in the table indicates a risk of irreversible loss for this particular item.

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

Two magnets attract each other from a significantly greater distance than a magnet and steel setup. Such a system of magnet-to-magnet generates a stronger field and a larger range of performance. Planning to create a strong closure? Use a pair of magnets instead of one magnet and a striker plate. Exercise caution that when bringing together two magnets, the impact force is extreme. The levitation is a bit weaker than the attraction, but still significant.
*Flux density for N-N configuration drops to ~0 Gs at the geometric center between the magnets (due to field cancellation).
Note: Figures refer to shear force of two identical magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - 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
Timepiece	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

A strong magnetic field is a large risk to IT equipment as well as medical implants. These NdFeB products generate a field that disrupts operation of digital equipment. Remember: the invisible magnetic field acts through matter and plastic. Increased vigilance must be exercised by people with hearing aids and drug dispensers. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
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

NdFeB products are delicate – a collision with steel causes immediate chipping. Watch the impact speed – a neodymium left loose becomes dangerous. Impact energy can destroy the magnet or dangerous crushing to fingers. Be sure to control the product during bringing near metal so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Use safety goggles when handling with powerful specimens.

Table 9: Surface protection spec
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. Note the thickness of the protective layer.

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)

Flux value passing through the pole surface. Key data in coil applications as well as sensors. P_c value determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
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%

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

The magnetic field penetrates through water without any losses. However, remember the water resistance when pulling the rope quickly.

1. Sliding resistance

*Caution: On a vertical surface, the magnet holds just approx. 20-30% of its nominal pull.

2. Steel thickness impact

*Thin steel (e.g. computer case) severely weakens the holding force.

3. Heat tolerance

*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 specification and ecology

Material specification

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: 030249-2026

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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 quick installation 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 material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. One turn too many can destroy the magnet, so do it slowly. It's a good idea to use a flexible washer under the screw head, which will cushion the stresses. Remember: cracking during assembly results from material properties, not a product defect.

These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but is not sufficient for rain. Damage to the protective layer during assembly is the most common cause of rusting. If you must use it outside, paint it with anti-corrosion paint after mounting.

A screw or bolt with a thread diameter smaller than 10.4/5.5 mm fits this model. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Aesthetic mounting requires selecting the appropriate head size.

The presented product is a ring magnet with dimensions Ø40 mm (outer diameter) and height 5 mm. The key parameter here is the holding force amounting to approximately 9.47 kg (force ~92.86 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 10.4/5.5 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. In the case of connecting two rings, make sure one is turned the right way. When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Advantages and disadvantages of rare earth magnets.

Benefits

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

They retain magnetic properties for nearly 10 years – the loss is just ~1% (in theory),
They retain their magnetic properties even under strong external field,
In other words, due to the metallic layer of nickel, the element looks attractive,
Magnets have very high magnetic induction on the active area,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
Thanks to the option of accurate forming and adaptation to unique solutions, neodymium magnets can be modeled in a wide range of geometric configurations, which amplifies use scope,
Wide application in advanced technology sectors – they are utilized in computer drives, brushless drives, advanced medical instruments, also industrial machines.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Cons of neodymium magnets and ways of using them

They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. 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 advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
We suggest a housing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complex forms.
Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child safety. Additionally, tiny parts of these devices are able to complicate diagnosis medical when they are in the body.
Due to neodymium price, their price is higher than average,

Lifting parameters

Maximum lifting capacity of the magnet – what contributes to it?

Holding force of 9.47 kg is a measurement result performed under standard conditions:

on a block made of structural steel, optimally conducting the magnetic flux
possessing a massiveness of at least 10 mm to avoid saturation
with an ground contact surface
under conditions of no distance (surface-to-surface)
for force acting at a right angle (in the magnet axis)
at temperature approx. 20 degrees Celsius

Practical lifting capacity: influencing factors

In practice, the actual lifting capacity results from a number of factors, listed from the most important:

Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
Force direction – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the maximum value.
Steel thickness – too thin sheet causes magnetic saturation, causing part of the flux to be escaped into the air.
Steel grade – the best choice is high-permeability steel. Stainless steels may generate lower lifting capacity.
Plate texture – smooth surfaces guarantee perfect abutment, which improves field saturation. Rough surfaces reduce efficiency.
Thermal conditions – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under shearing force the holding force is lower. In addition, even a minimal clearance between the magnet and the plate decreases the load capacity.

Safe handling of neodymium magnets

Crushing force

Big blocks can smash fingers in a fraction of a second. Do not put your hand betwixt two attracting surfaces.

GPS Danger

Note: rare earth magnets generate a field that disrupts precision electronics. Maintain a separation from your mobile, device, and navigation systems.

Nickel allergy

Nickel alert: The nickel-copper-nickel coating contains nickel. If an allergic reaction appears, cease handling magnets and use protective gear.

Maximum temperature

Keep cool. NdFeB magnets are sensitive to heat. If you require resistance above 80°C, look for special high-temperature series (H, SH, UH).

Material brittleness

Despite the nickel coating, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Electronic devices

Do not bring magnets close to a purse, laptop, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.

Choking Hazard

Neodymium magnets are not suitable for play. Swallowing multiple magnets can lead to them attracting across intestines, which poses a direct threat to life and necessitates immediate surgery.

Dust is flammable

Mechanical processing of neodymium magnets carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Handling guide

Before starting, read the rules. Sudden snapping can break the magnet or hurt your hand. Be predictive.

Implant safety

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

Attention! Learn more about risks in the article: Safety of working with magnets.

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

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the product - report

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

Table 2: Sliding load (wall) MP 40x10.4/5.5x5 / N38

Table 3: Vertical assembly (shearing) - vertical pull MP 40x10.4/5.5x5 / N38

Table 4: Material efficiency (substrate influence) - power losses MP 40x10.4/5.5x5 / N38

Table 5: Thermal stability (stability) - thermal limit MP 40x10.4/5.5x5 / N38

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

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

Table 8: Impact energy (kinetic energy) - warning MP 40x10.4/5.5x5 / N38

Table 9: Surface protection spec MP 40x10.4/5.5x5 / N38

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

Table 11: Underwater work (magnet fishing) MP 40x10.4/5.5x5 / N38

1. Sliding resistance

2. Steel thickness impact

3. Heat tolerance

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

Material specification

Ecology and recycling (GPSR)

Pulling force

Magnetic Field

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UMGZ 60x30x15 [M10] GZ / N38 - magnetic holder external thread

Advantages and disadvantages of rare earth magnets.

Benefits

Disadvantages

Lifting parameters

Maximum lifting capacity of the magnet – what contributes to it?

Practical lifting capacity: influencing factors

Safe handling of neodymium magnets

Crushing force

GPS Danger

Nickel allergy

Maximum temperature

Material brittleness

Electronic devices

Choking Hazard

Dust is flammable

Handling guide

Implant safety

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Sliding load (wall)
MP 40x10.4/5.5x5 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MP 40x10.4/5.5x5 / N38

Table 4: Material efficiency (substrate influence) - power losses
MP 40x10.4/5.5x5 / N38

Table 5: Thermal stability (stability) - thermal limit
MP 40x10.4/5.5x5 / N38

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

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

Table 8: Impact energy (kinetic energy) - warning
MP 40x10.4/5.5x5 / N38

Table 9: Surface protection spec
MP 40x10.4/5.5x5 / N38

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

Table 11: Underwater work (magnet fishing)
MP 40x10.4/5.5x5 / N38