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MP 30x7/3x3 / 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 030250

GTIN/EAN: 5906301812265

5.00

Diameter

30 mm [±0,1 mm]

internal diameter Ø

7/3 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

15.75 g

Magnetization Direction

↑ axial

Load capacity

3.64 kg / 35.69 N

Magnetic Induction

121.58 mT / 1216 Gs

Coating

[NiCuNi] Nickel

product parameters »

6.84 ZŁ with VAT / pcs + price for transport

5.56 ZŁ net + 23% VAT / pcs

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Technical of the product - MP 30x7/3x3 / N38 - ring magnet

Specification / characteristics - MP 30x7/3x3 / N38 - ring magnet

properties

properties	values
Cat. no.	030250
GTIN/EAN	5906301812265
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	30 mm [±0,1 mm]
internal diameter Ø	7/3 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	15.75 g
Magnetization Direction	↑ axial
Load capacity ~ ?	3.64 kg / 35.69 N
Magnetic Induction ~ ?	121.58 mT / 1216 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 30x7/3x3 / 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 modeling of the product - report

These data constitute the direct effect of a mathematical simulation. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Operational performance might slightly differ. Use these data as a reference point when designing systems.

Table 1: Static pull force (pull vs gap) - characteristics
MP 30x7/3x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1039 Gs 103.9 mT	3.64 kg / 8.02 pounds 3640.0 g / 35.7 N	warning
1 mm	1015 Gs 101.5 mT	3.48 kg / 7.67 pounds 3477.6 g / 34.1 N	warning
2 mm	980 Gs 98.0 mT	3.24 kg / 7.14 pounds 3240.7 g / 31.8 N	warning
3 mm	936 Gs 93.6 mT	2.95 kg / 6.51 pounds 2951.6 g / 29.0 N	warning
5 mm	827 Gs 82.7 mT	2.31 kg / 5.08 pounds 2305.8 g / 22.6 N	warning
10 mm	539 Gs 53.9 mT	0.98 kg / 2.16 pounds 981.0 g / 9.6 N	safe
15 mm	329 Gs 32.9 mT	0.37 kg / 0.80 pounds 365.1 g / 3.6 N	safe
20 mm	202 Gs 20.2 mT	0.14 kg / 0.30 pounds 137.9 g / 1.4 N	safe
30 mm	85 Gs 8.5 mT	0.02 kg / 0.05 pounds 24.6 g / 0.2 N	safe
50 mm	23 Gs 2.3 mT	0.00 kg / 0.00 pounds 1.8 g / 0.0 N	safe

Pulling power drops sharply with every mm of gap. Remember that even a very thin break (e.g., dirt, varnish, veneer) strongly reduces the pull force. Neodymiums operate most effectively during direct contact; gap kills the power. Analyze how quickly the parameters plummet, when the product does not adhere flatly to the steel surface. When designing the assembly, discard additional spacers.

Table 2: Slippage capacity (vertical surface)
MP 30x7/3x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.73 kg / 1.60 pounds 728.0 g / 7.1 N
1 mm	Stal (~0.2)	0.70 kg / 1.53 pounds 696.0 g / 6.8 N
2 mm	Stal (~0.2)	0.65 kg / 1.43 pounds 648.0 g / 6.4 N
3 mm	Stal (~0.2)	0.59 kg / 1.30 pounds 590.0 g / 5.8 N
5 mm	Stal (~0.2)	0.46 kg / 1.02 pounds 462.0 g / 4.5 N
10 mm	Stal (~0.2)	0.20 kg / 0.43 pounds 196.0 g / 1.9 N
15 mm	Stal (~0.2)	0.07 kg / 0.16 pounds 74.0 g / 0.7 N
20 mm	Stal (~0.2)	0.03 kg / 0.06 pounds 28.0 g / 0.3 N
30 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

The table below indicates the estimated shear load sufficient to initiate the shifting of the magnet down along a upright steel plate (assuming typical friction coefficient). This parameter is a function of the gap size between the magnet and the surface.

Table 3: Vertical assembly (shearing) - vertical pull
MP 30x7/3x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.09 kg / 2.41 pounds 1092.0 g / 10.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.73 kg / 1.60 pounds 728.0 g / 7.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.36 kg / 0.80 pounds 364.0 g / 3.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.82 kg / 4.01 pounds 1820.0 g / 17.9 N

When placing a element on a upright wall (e.g., a fridge), it you can count on just approx. 20%-30% of its maximum pull force. Gravity and a weak degree of grip cause that products slip faster than they pop off the substrate. Want to create a hanger? Consider that the sliding force is significantly lower than the perpendicular breakaway force. On a smooth steel, the element will give way down under a much lighter cargo. Application of an anti-slip pad can effectively raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MP 30x7/3x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.36 kg / 0.80 pounds 364.0 g / 3.6 N
1 mm	25%	0.91 kg / 2.01 pounds 910.0 g / 8.9 N
2 mm	50%	1.82 kg / 4.01 pounds 1820.0 g / 17.9 N
3 mm	75%	2.73 kg / 6.02 pounds 2730.0 g / 26.8 N
5 mm	100%	3.64 kg / 8.02 pounds 3640.0 g / 35.7 N
10 mm	100%	3.64 kg / 8.02 pounds 3640.0 g / 35.7 N
11 mm	100%	3.64 kg / 8.02 pounds 3640.0 g / 35.7 N
12 mm	100%	3.64 kg / 8.02 pounds 3640.0 g / 35.7 N

A thin metal plate cannot focus the full magnetic flux, which weakens actual performance of the holder. Should you mount a strong magnet to a thin surface, the field will penetrate right through and the holding will be smaller. To achieve 100% of this neodymium's potential, you require a sufficiently solid element of steel. The material oversaturation causes that on thin elements (e.g., car bodies), the product works worse. We suggest choosing the steel thickness according to the table below.

Table 5: Working in heat (stability) - resistance threshold
MP 30x7/3x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	3.64 kg / 8.02 pounds 3640.0 g / 35.7 N	OK
40 °C	-2.2%	3.56 kg / 7.85 pounds 3559.9 g / 34.9 N	OK
60 °C	-4.4%	3.48 kg / 7.67 pounds 3479.8 g / 34.1 N
80 °C	-6.6%	3.40 kg / 7.50 pounds 3399.8 g / 33.4 N
100 °C	-28.8%	2.59 kg / 5.71 pounds 2591.7 g / 25.4 N

Classic neodymiums irreversibly lose parameters past the thermal threshold. Avoid high temperatures – excessive heat can irreversibly destroy this magnet. With increasing heat, the magnet's force briefly decreases. Refrain from using this magnet near heat sources higher than its working range. Too high temperature will result in permanent loss of magnetic properties.

*Technical advisory: Heat tolerance is determined by both grade, but also on the magnet's shape. Flat magnets (low Pc) are more susceptible to demagnetization under lower heat stress than taller cylinders. The danger warning in the table points to a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MP 30x7/3x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	3.96 kg / 8.73 pounds 1 995 Gs	0.59 kg / 1.31 pounds 594 g / 5.8 N	N/A
1 mm	3.88 kg / 8.56 pounds 2 058 Gs	0.58 kg / 1.28 pounds 582 g / 5.7 N	3.49 kg / 7.70 pounds ~0 Gs
2 mm	3.78 kg / 8.34 pounds 2 031 Gs	0.57 kg / 1.25 pounds 567 g / 5.6 N	3.40 kg / 7.50 pounds ~0 Gs
3 mm	3.66 kg / 8.07 pounds 1 998 Gs	0.55 kg / 1.21 pounds 549 g / 5.4 N	3.30 kg / 7.26 pounds ~0 Gs
5 mm	3.37 kg / 7.43 pounds 1 918 Gs	0.51 kg / 1.12 pounds 506 g / 5.0 N	3.04 kg / 6.69 pounds ~0 Gs
10 mm	2.51 kg / 5.53 pounds 1 654 Gs	0.38 kg / 0.83 pounds 376 g / 3.7 N	2.26 kg / 4.97 pounds ~0 Gs
20 mm	1.07 kg / 2.35 pounds 1 079 Gs	0.16 kg / 0.35 pounds 160 g / 1.6 N	0.96 kg / 2.12 pounds ~0 Gs
50 mm	0.06 kg / 0.13 pounds 258 Gs	0.01 kg / 0.02 pounds 9 g / 0.1 N	0.05 kg / 0.12 pounds ~0 Gs
60 mm	0.03 kg / 0.06 pounds 171 Gs	0.00 kg / 0.01 pounds 4 g / 0.0 N	0.02 kg / 0.05 pounds ~0 Gs
70 mm	0.01 kg / 0.03 pounds 118 Gs	0.00 kg / 0.00 pounds 2 g / 0.0 N	0.01 kg / 0.03 pounds ~0 Gs
80 mm	0.01 kg / 0.01 pounds 84 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.01 pounds 62 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 47 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnets interact from a wider radius than a magnet and sheet setup. The connection of two magnets produces a massive flux and a wider radius of performance. Planning to create a strong closure? Apply two magnets instead of a neodymium and a steel. Exercise caution that when bringing together two magnets, the collision energy is huge. The levitation is marginally weaker than the connection force, but still impressive.
*Field value in repulsion mode reaches ~0 Gs at the midpoint of the gap (resulting from vector opposition).
* Results apply to shear force of a pair of same neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (electronics) - precautionary measures
MP 30x7/3x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	9.0 cm
Hearing aid	10 Gs (1.0 mT)	7.0 cm
Timepiece	20 Gs (2.0 mT)	5.5 cm
Mobile device	40 Gs (4.0 mT)	4.5 cm
Remote	50 Gs (5.0 mT)	4.0 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

A strong magnetic field poses a serious hazard to electronic devices as well as pacemakers. These magnets generate a flux that disrupts operation of sensitive medical devices. Remember: the invisible magnetic field passes through tissues and plastic. Special caution must be exercised by people with hearing aids and insulin pumps. The risk also applies to: automatic timepieces, car keys, membranes, and displays. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Collisions (cracking risk) - warning
MP 30x7/3x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	17.73 km/h (4.92 m/s)	0.19 J
30 mm	26.67 km/h (7.41 m/s)	0.43 J
50 mm	34.29 km/h (9.53 m/s)	0.71 J
100 mm	48.48 km/h (13.47 m/s)	1.43 J

Magnetic elements are delicate – a violent impact against metal risks their cracking. Watch the impact speed – a neodymium left loose turns into a projectile. Kinetic force can destroy the magnet or injury to skin. Hold the magnet firmly during installation so it doesn't hit with great force against the metal. A collision at high speed ends with a crack of the neodymium. Wear safety glasses when working with powerful specimens.

Table 9: Corrosion resistance
MP 30x7/3x3 / 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (P_c)
MP 30x7/3x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	8 395 Mx	84.0 µWb
P_c Coefficient	0.13	Low (Flat)

Flux value emitted by the magnet pole. Essential parameter for generator designers as well as sensors. P_c value determines the working geometry.

Table 11: Submerged application
MP 30x7/3x3 / N38

Environment	Effective steel pull	Effect
Air (land)	3.64 kg	Standard
Water (riverbed)	4.17 kg (+0.53 kg buoyancy gain)	+14.5%

Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

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

1. Sliding resistance

*Warning: On a vertical wall, the magnet retains only approx. 20-30% of its nominal pull.

2. Efficiency vs thickness

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

3. Heat tolerance

*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) = 0.13

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 and environmental data

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%

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: 030250-2026

Magnet Unit Converter

Force (pull)

lbs

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Induction (Gs)

Tesla (T)

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The ring magnet with a hole MP 30x7/3x3 / 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. It is also often used in advertising for fixing signs and in workshops for organizing tools.

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. The flat screw head should evenly press the magnet. 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. 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. If the magnet does not have a chamfer (cone), we recommend using a screw with a flat or cylindrical head, or possibly using a washer. Always check that the screw head is not larger than the outer diameter of the magnet (30 mm), so it doesn't protrude beyond the outline.

This model is characterized by dimensions Ø30x3 mm and a weight of 15.75 g. The pulling force of this model is an impressive 3.64 kg, which translates to 35.69 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 7/3 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.

Pros as well as cons of Nd₂Fe₁₄B magnets.

Advantages

Besides their exceptional magnetic power, neodymium magnets offer the following advantages:

They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (according to literature),
They are extremely resistant to demagnetization induced by external field influence,
In other words, due to the aesthetic surface of gold, the element gains a professional look,
They are known for high magnetic induction at the operating surface, making them more effective,
Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
Due to the ability of precise shaping and customization to specialized needs, neodymium magnets can be manufactured in a wide range of forms and dimensions, which expands the range of possible applications,
Significant place in innovative solutions – they serve a role in hard drives, brushless drives, diagnostic systems, also other advanced devices.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Disadvantages of neodymium magnets:

They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
They oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
Due to limitations in creating threads and complex shapes in magnets, we recommend using cover - magnetic holder.
Health risk to health – tiny shards of magnets pose a threat, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that small components of these magnets can disrupt the diagnostic process medical when they are in the body.
Due to complex production process, their price is higher than average,

Holding force characteristics

Detachment force of the magnet in optimal conditions – what contributes to it?

The specified lifting capacity refers to the limit force, obtained under optimal environment, specifically:

on a base made of mild steel, effectively closing the magnetic flux
possessing a massiveness of min. 10 mm to ensure full flux closure
with a surface free of scratches
under conditions of no distance (surface-to-surface)
under perpendicular force vector (90-degree angle)
in neutral thermal conditions

Lifting capacity in real conditions – factors

Holding efficiency is affected by specific conditions, including (from priority):

Air gap (between the magnet and the metal), since even a microscopic clearance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to varnish, corrosion or debris).
Loading method – declared lifting capacity refers to detachment vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
Steel type – low-carbon steel attracts best. Alloy steels reduce magnetic permeability and lifting capacity.
Base smoothness – the more even the plate, the larger the contact zone and stronger the hold. Roughness creates an air distance.
Temperature – temperature increase causes a temporary drop of force. Check the maximum operating temperature for a given model.

Lifting capacity was determined using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a small distance between the magnet and the plate decreases the lifting capacity.

Warnings

Flammability

Fire hazard: Neodymium dust is explosive. Avoid machining magnets without safety gear as this may cause fire.

Implant safety

Health Alert: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.

Electronic devices

Equipment safety: Neodymium magnets can damage payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Phone sensors

Be aware: rare earth magnets produce a field that interferes with sensitive sensors. Maintain a safe distance from your phone, device, and navigation systems.

Shattering risk

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

Adults only

Strictly store magnets out of reach of children. Choking hazard is high, and the effects of magnets clamping inside the body are tragic.

Warning for allergy sufferers

Medical facts indicate that the nickel plating (standard magnet coating) is a strong allergen. If your skin reacts to metals, prevent direct skin contact and choose coated magnets.

Immense force

Handle magnets consciously. Their powerful strength can shock even professionals. Plan your moves and do not underestimate their force.

Maximum temperature

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

Finger safety

Watch your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Exercise extreme caution!

Danger! Looking for details? Check our post: Why are neodymium magnets dangerous?

MP 30x7/3x3 / N38 - ring magnet

Technical of the product - MP 30x7/3x3 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the product - report

Table 1: Static pull force (pull vs gap) - characteristics MP 30x7/3x3 / N38

Table 2: Slippage capacity (vertical surface) MP 30x7/3x3 / N38

Table 3: Vertical assembly (shearing) - vertical pull MP 30x7/3x3 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MP 30x7/3x3 / N38

Table 5: Working in heat (stability) - resistance threshold MP 30x7/3x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MP 30x7/3x3 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures MP 30x7/3x3 / N38

Table 8: Collisions (cracking risk) - warning MP 30x7/3x3 / N38

Table 9: Corrosion resistance MP 30x7/3x3 / N38

Table 10: Construction data (Pc) MP 30x7/3x3 / N38

Table 11: Submerged application MP 30x7/3x3 / N38

1. Sliding resistance

2. Efficiency vs thickness

3. Heat tolerance

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

Material specification

Environmental data

Force (pull)

Magnetic Field

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Pros as well as cons of Nd2Fe14B magnets.

Advantages

Disadvantages

Holding force characteristics

Detachment force of the magnet in optimal conditions – what contributes to it?

Lifting capacity in real conditions – factors

Warnings

Flammability

Implant safety

Electronic devices

Phone sensors

Shattering risk

Adults only

Warning for allergy sufferers

Immense force

Maximum temperature

Finger safety

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - characteristics
MP 30x7/3x3 / N38

Table 2: Slippage capacity (vertical surface)
MP 30x7/3x3 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MP 30x7/3x3 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MP 30x7/3x3 / N38

Table 5: Working in heat (stability) - resistance threshold
MP 30x7/3x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MP 30x7/3x3 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures
MP 30x7/3x3 / N38

Table 8: Collisions (cracking risk) - warning
MP 30x7/3x3 / N38

Table 9: Corrosion resistance
MP 30x7/3x3 / N38

Table 10: Construction data (P_c)
MP 30x7/3x3 / N38

Table 11: Submerged application
MP 30x7/3x3 / N38

Pros as well as cons of Nd₂Fe₁₄B magnets.