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MP 40x22x10 / 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 030344

GTIN/EAN: 5906301812296

5.00

Diameter

40 mm [±0,1 mm]

internal diameter Ø

22 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

65.74 g

Magnetization Direction

↑ axial

Load capacity

19.34 kg / 189.71 N

Magnetic Induction

277.22 mT / 2772 Gs

Coating

[NiCuNi] Nickel

see parameters »

40.59 ZŁ with VAT / pcs + price for transport

33.00 ZŁ net + 23% VAT / pcs

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Product card - MP 40x22x10 / N38 - ring magnet

Specification / characteristics - MP 40x22x10 / N38 - ring magnet

properties

properties	values
Cat. no.	030344
GTIN/EAN	5906301812296
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	22 mm [±0,1 mm]
Height	10 mm [±0,1 mm]
Weight	65.74 g
Magnetization Direction	↑ axial
Load capacity ~ ?	19.34 kg / 189.71 N
Magnetic Induction ~ ?	277.22 mT / 2772 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 40x22x10 / 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 simulation of the magnet - report

These data represent the outcome of a engineering calculation. Results were calculated on models for the material Nd₂Fe₁₄B. Operational conditions might slightly differ from theoretical values. Use these calculations as a preliminary roadmap for designers.

Table 1: Static pull force (force vs distance) - interaction chart
MP 40x22x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5269 Gs 526.9 mT	19.34 kg / 42.64 LBS 19340.0 g / 189.7 N	dangerous!
1 mm	5005 Gs 500.5 mT	17.46 kg / 38.48 LBS 17455.9 g / 171.2 N	dangerous!
2 mm	4739 Gs 473.9 mT	15.65 kg / 34.50 LBS 15647.5 g / 153.5 N	dangerous!
3 mm	4475 Gs 447.5 mT	13.95 kg / 30.75 LBS 13950.0 g / 136.8 N	dangerous!
5 mm	3960 Gs 396.0 mT	10.93 kg / 24.09 LBS 10927.7 g / 107.2 N	dangerous!
10 mm	2832 Gs 283.2 mT	5.59 kg / 12.32 LBS 5589.2 g / 54.8 N	medium risk
15 mm	1990 Gs 199.0 mT	2.76 kg / 6.09 LBS 2760.5 g / 27.1 N	medium risk
20 mm	1407 Gs 140.7 mT	1.38 kg / 3.04 LBS 1379.2 g / 13.5 N	weak grip
30 mm	745 Gs 74.5 mT	0.39 kg / 0.85 LBS 386.2 g / 3.8 N	weak grip
50 mm	268 Gs 26.8 mT	0.05 kg / 0.11 LBS 50.1 g / 0.5 N	weak grip

Pulling power drops sharply per each millimeter of spacing. Note that every additional insulation layer (e.g., contamination, paint, dust) significantly reduces the pull force. Magnets hold most effectively during direct contact; air break drastically cuts the power. Notice how rapidly the load capacity drop, when the magnet does not touch flatly to the metal substrate. When planning the assembly, eliminate unnecessary gaps.

Table 2: Shear load (wall)
MP 40x22x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	3.87 kg / 8.53 LBS 3868.0 g / 37.9 N
1 mm	Stal (~0.2)	3.49 kg / 7.70 LBS 3492.0 g / 34.3 N
2 mm	Stal (~0.2)	3.13 kg / 6.90 LBS 3130.0 g / 30.7 N
3 mm	Stal (~0.2)	2.79 kg / 6.15 LBS 2790.0 g / 27.4 N
5 mm	Stal (~0.2)	2.19 kg / 4.82 LBS 2186.0 g / 21.4 N
10 mm	Stal (~0.2)	1.12 kg / 2.46 LBS 1118.0 g / 11.0 N
15 mm	Stal (~0.2)	0.55 kg / 1.22 LBS 552.0 g / 5.4 N
20 mm	Stal (~0.2)	0.28 kg / 0.61 LBS 276.0 g / 2.7 N
30 mm	Stal (~0.2)	0.08 kg / 0.17 LBS 78.0 g / 0.8 N
50 mm	Stal (~0.2)	0.01 kg / 0.02 LBS 10.0 g / 0.1 N

The table below indicates the approximate holding capacity necessary to cause the downward movement of the magnet down against a vertical steel plate (assuming standard friction coefficient). This value varies with the air gap between the magnet and the surface.

Table 3: Wall mounting (shearing) - vertical pull
MP 40x22x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	5.80 kg / 12.79 LBS 5802.0 g / 56.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	3.87 kg / 8.53 LBS 3868.0 g / 37.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.93 kg / 4.26 LBS 1934.0 g / 19.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	9.67 kg / 21.32 LBS 9670.0 g / 94.9 N

When hanging a magnet on a vertical wall (e.g., a board), it you can count on only approx. 20%-30% of its nominal power. Gravity as well as a weak degree of grip influence the fact that holders slip easier than they pop off the substrate. Planning a vertical fastening? Remember that the shear force is significantly lower than the perpendicular breakaway force. On a painted metal, the element will slip down under a noticeably lighter weight. Utilizing a rubberized layer can significantly increase the grip.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MP 40x22x10 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.97 kg / 2.13 LBS 967.0 g / 9.5 N
1 mm	13%	2.42 kg / 5.33 LBS 2417.5 g / 23.7 N
2 mm	25%	4.84 kg / 10.66 LBS 4835.0 g / 47.4 N
3 mm	38%	7.25 kg / 15.99 LBS 7252.5 g / 71.1 N
5 mm	63%	12.09 kg / 26.65 LBS 12087.5 g / 118.6 N
10 mm	100%	19.34 kg / 42.64 LBS 19340.0 g / 189.7 N
11 mm	100%	19.34 kg / 42.64 LBS 19340.0 g / 189.7 N
12 mm	100%	19.34 kg / 42.64 LBS 19340.0 g / 189.7 N

A thin sheet cannot take in the entire magnetic field, which squanders power of the holder. If you mount a strong magnet to a weak sheet, the magnetism will pass right through and the pull force will drop sharply. To utilize full efficiency of this magnet's potential, you require a sufficiently solid piece of steel. The material oversaturation causes that on delicate walls (e.g., thin profiles), the magnet shows lower pull force. We recommend selecting the steel dimension from these parameters.

Table 5: Working in heat (material behavior) - resistance threshold
MP 40x22x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	19.34 kg / 42.64 LBS 19340.0 g / 189.7 N	OK
40 °C	-2.2%	18.91 kg / 41.70 LBS 18914.5 g / 185.6 N	OK
60 °C	-4.4%	18.49 kg / 40.76 LBS 18489.0 g / 181.4 N	OK
80 °C	-6.6%	18.06 kg / 39.82 LBS 18063.6 g / 177.2 N
100 °C	-28.8%	13.77 kg / 30.36 LBS 13770.1 g / 135.1 N

Standard neodymium magnets irreversibly lose strength past the thermal threshold. Avoid high temperatures – high temperature can permanently destroy this product. With every degree above norm, the magnet's power momentarily lowers. Refrain from using this magnet close to heaters higher than its operating temperature limit. Too high temperature will cause permanent loss of magnetic properties.

*Engineering note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Thin magnets (low Pc) may lose charge permanently 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 collision
MP 40x22x10 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	171.37 kg / 377.80 LBS 5 920 Gs	25.71 kg / 56.67 LBS 25705 g / 252.2 N	N/A
1 mm	163.01 kg / 359.38 LBS 10 277 Gs	24.45 kg / 53.91 LBS 24452 g / 239.9 N	146.71 kg / 323.44 LBS ~0 Gs
2 mm	154.67 kg / 341.00 LBS 10 011 Gs	23.20 kg / 51.15 LBS 23201 g / 227.6 N	139.21 kg / 306.90 LBS ~0 Gs
3 mm	146.55 kg / 323.08 LBS 9 744 Gs	21.98 kg / 48.46 LBS 21982 g / 215.6 N	131.89 kg / 290.77 LBS ~0 Gs
5 mm	131.00 kg / 288.81 LBS 9 213 Gs	19.65 kg / 43.32 LBS 19650 g / 192.8 N	117.90 kg / 259.92 LBS ~0 Gs
10 mm	96.83 kg / 213.47 LBS 7 921 Gs	14.52 kg / 32.02 LBS 14524 g / 142.5 N	87.15 kg / 192.12 LBS ~0 Gs
20 mm	49.53 kg / 109.18 LBS 5 665 Gs	7.43 kg / 16.38 LBS 7429 g / 72.9 N	44.57 kg / 98.27 LBS ~0 Gs
50 mm	6.33 kg / 13.95 LBS 2 025 Gs	0.95 kg / 2.09 LBS 949 g / 9.3 N	5.69 kg / 12.55 LBS ~0 Gs
60 mm	3.42 kg / 7.55 LBS 1 489 Gs	0.51 kg / 1.13 LBS 513 g / 5.0 N	3.08 kg / 6.79 LBS ~0 Gs
70 mm	1.94 kg / 4.27 LBS 1 120 Gs	0.29 kg / 0.64 LBS 290 g / 2.8 N	1.74 kg / 3.84 LBS ~0 Gs
80 mm	1.14 kg / 2.52 LBS 860 Gs	0.17 kg / 0.38 LBS 171 g / 1.7 N	1.03 kg / 2.27 LBS ~0 Gs
90 mm	0.70 kg / 1.54 LBS 673 Gs	0.10 kg / 0.23 LBS 105 g / 1.0 N	0.63 kg / 1.39 LBS ~0 Gs
100 mm	0.44 kg / 0.98 LBS 536 Gs	0.07 kg / 0.15 LBS 67 g / 0.7 N	0.40 kg / 0.88 LBS ~0 Gs

Two magnets attract each other from a wider radius than a magnet and sheet setup. Such a system of magnet-to-magnet creates a more powerful interaction and a wider radius of performance. Want to build a solid fastener? Apply two magnets instead of a neodymium and a striker plate. Exercise caution that when attracting two neodymiums, the pinch force is huge. The levitation is marginally weaker than the connection force, but still impressive.
*Flux density for N-N configuration reaches ~0 Gs at the midpoint between the magnets (due to field cancellation).
Attention: Results apply to shear force of two identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (implants) - warnings
MP 40x22x10 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	24.0 cm
Hearing aid	10 Gs (1.0 mT)	18.5 cm
Timepiece	20 Gs (2.0 mT)	14.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	11.0 cm
Car key	50 Gs (5.0 mT)	10.5 cm
Payment card	400 Gs (40.0 mT)	4.5 cm
HDD hard drive	600 Gs (60.0 mT)	3.5 cm

Powerful magnet radiation poses a serious hazard to electronic devices and pacemakers. These NdFeB products generate a flux that disrupts operation of sensitive medical devices. Notice: the invisible magnetic field acts through matter and housings. Exceptional care must be exercised by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, car keys, speakers, and screens. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - warning
MP 40x22x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	20.18 km/h (5.61 m/s)	1.03 J
30 mm	30.33 km/h (8.43 m/s)	2.33 J
50 mm	38.74 km/h (10.76 m/s)	3.81 J
100 mm	54.70 km/h (15.20 m/s)	7.59 J

NdFeB products are prone to chipping – a violent impact against metal can result in shattering. Watch the impact speed – a neodymium left loose becomes dangerous. Striking energy can trigger coating fragments or dangerous crushing to skin. Be sure to control the product during mounting so it doesn't hit with great force against the metal. A collision at high speed means shattering of the neodymium. Wear safety glasses when working with powerful specimens.

Table 9: Anti-corrosion coating durability
MP 40x22x10 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Flux)
MP 40x22x10 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	54 070 Mx	540.7 µWb
P_c Coefficient	0.81	High (Stable)

Flux value passing through the pole surface. Key data for generator designers as well as sensors. The P_c coefficient determines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MP 40x22x10 / N38

Environment	Effective steel pull	Effect
Air (land)	19.34 kg	Standard
Water (riverbed)	22.14 kg (+2.80 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. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Sliding resistance

*Caution: On a vertical surface, the magnet retains only ~20% of its nominal pull.

2. Efficiency vs thickness

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

3. Power loss vs temp

*For standard magnets, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.81

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

Technical and environmental data

Elemental analysis

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Ecology and recycling (GPSR)

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 030344-2026

Magnet Unit Converter

Force (pull)

Force (N)

Force in lbs

Field Strength

Induction (Gs)

Tesla (T)

Just complete any input, to let the converter calculate the rest instantly.

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It is ideally suited for places where solid attachment of the magnet to the substrate is required without the risk of detachment. 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 19.34 kg works great as a door latch, speaker holder, or spacer element in devices.

This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. When tightening the screw, you must maintain caution. 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 flexible washer 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. In the place of the mounting hole, the coating is thinner and easily scratched when tightening the screw, which will become a corrosion focus. If you must use it outside, paint it with anti-corrosion paint after mounting.

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. Aesthetic mounting requires selecting the appropriate head size.

The presented product is a ring magnet with dimensions Ø40 mm (outer diameter) and height 10 mm. The pulling force of this model is an impressive 19.34 kg, which translates to 189.71 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 22 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. 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.

Advantages and disadvantages of rare earth magnets.

Advantages

Besides their durability, neodymium magnets are valued for these benefits:

They retain attractive force for almost ten years – the drop is just ~1% (in theory),
They have excellent resistance to weakening of magnetic properties as a result of external fields,
Thanks to the shimmering finish, the coating of Ni-Cu-Ni, gold, or silver-plated gives an aesthetic appearance,
Magnets exhibit maximum magnetic induction on the outer side,
Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
Considering the potential of free shaping and adaptation to individualized solutions, NdFeB magnets can be produced in a wide range of geometric configurations, which amplifies use scope,
Wide application in modern industrial fields – they find application in data components, drive modules, precision medical tools, as well as modern systems.
Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Cons

Disadvantages of neodymium magnets:

At very strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
Neodymium magnets lose their force 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 durability even at temperatures up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
We suggest cover - magnetic mount, due to difficulties in realizing nuts inside the magnet and complicated forms.
Possible danger related to microscopic parts of magnets are risky, if swallowed, which becomes key in the aspect of protecting the youngest. Additionally, small components of these products are able to complicate diagnosis medical in case of swallowing.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Pull force analysis

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

The force parameter is a result of laboratory testing performed under the following configuration:

on a block made of mild steel, effectively closing the magnetic field
with a thickness minimum 10 mm
characterized by lack of roughness
without the slightest clearance between the magnet and steel
for force applied at a right angle (pull-off, not shear)
at room temperature

Determinants of lifting force in real conditions

It is worth knowing that the working load will differ influenced by elements below, in order of importance:

Distance – existence of foreign body (rust, tape, air) acts as an insulator, which lowers capacity rapidly (even by 50% at 0.5 mm).
Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet exhibits much less (typically approx. 20-30% of nominal force).
Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
Steel grade – the best choice is high-permeability steel. Stainless steels may attract less.
Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
Thermal environment – heating the magnet results in weakening of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity was measured by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, in contrast under parallel forces the lifting capacity is smaller. In addition, even a minimal clearance between the magnet and the plate decreases the load capacity.

Precautions when working with NdFeB magnets

Magnets are brittle

NdFeB magnets are ceramic materials, which means they are prone to chipping. Clashing of two magnets will cause them shattering into shards.

Magnetic media

Data protection: Neodymium magnets can damage payment cards and delicate electronics (heart implants, medical aids, timepieces).

ICD Warning

Life threat: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Pinching danger

Watch your fingers. Two large magnets will snap together instantly with a force of several hundred kilograms, destroying anything in their path. Be careful!

Threat to navigation

Navigation devices and smartphones are extremely sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can ruin the sensors in your phone.

Demagnetization risk

Watch the temperature. Heating the magnet to high heat will ruin its magnetic structure and pulling force.

Nickel allergy

Some people experience a hypersensitivity to nickel, which is the typical protective layer for neodymium magnets. Prolonged contact may cause dermatitis. It is best to use safety gloves.

Conscious usage

Be careful. Rare earth magnets attract from a long distance and connect with massive power, often quicker than you can react.

Choking Hazard

Only for adults. Tiny parts pose a choking risk, leading to serious injuries. Keep away from children and animals.

Dust is flammable

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

Caution! Details about risks in the article: Safety of working with magnets.

MP 40x22x10 / N38 - ring magnet

Product card - MP 40x22x10 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the magnet - report

Table 1: Static pull force (force vs distance) - interaction chart MP 40x22x10 / N38

Table 2: Shear load (wall) MP 40x22x10 / N38

Table 3: Wall mounting (shearing) - vertical pull MP 40x22x10 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MP 40x22x10 / N38

Table 5: Working in heat (material behavior) - resistance threshold MP 40x22x10 / N38

Table 6: Two magnets (repulsion) - field collision MP 40x22x10 / N38

Table 7: Safety (HSE) (implants) - warnings MP 40x22x10 / N38

Table 8: Dynamics (kinetic energy) - warning MP 40x22x10 / N38

Table 9: Anti-corrosion coating durability MP 40x22x10 / N38

Table 10: Electrical data (Flux) MP 40x22x10 / N38

Table 11: Hydrostatics and buoyancy MP 40x22x10 / N38

1. Sliding resistance

2. Efficiency vs thickness

3. Power loss vs temp

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

Elemental analysis

Ecology and recycling (GPSR)

Force (pull)

Field Strength

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Advantages and disadvantages of rare earth magnets.

Advantages

Cons

Pull force analysis

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

Determinants of lifting force in real conditions

Precautions when working with NdFeB magnets

Magnets are brittle

Magnetic media

ICD Warning

Pinching danger

Threat to navigation

Demagnetization risk

Nickel allergy

Conscious usage

Choking Hazard

Dust is flammable

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - interaction chart
MP 40x22x10 / N38

Table 2: Shear load (wall)
MP 40x22x10 / N38

Table 3: Wall mounting (shearing) - vertical pull
MP 40x22x10 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MP 40x22x10 / N38

Table 5: Working in heat (material behavior) - resistance threshold
MP 40x22x10 / N38

Table 6: Two magnets (repulsion) - field collision
MP 40x22x10 / N38

Table 7: Safety (HSE) (implants) - warnings
MP 40x22x10 / N38

Table 8: Dynamics (kinetic energy) - warning
MP 40x22x10 / N38

Table 9: Anti-corrosion coating durability
MP 40x22x10 / N38

Table 10: Electrical data (Flux)
MP 40x22x10 / N38

Table 11: Hydrostatics and buoyancy
MP 40x22x10 / N38