MP 14x8/4x3 / N38 - ring magnet - ujęcie 2

Product available Ships tomorrow

MP 14x8/4x3 / 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 030181

GTIN/EAN: 5906301811985

5.00

Diameter

14 mm [±0,1 mm]

internal diameter Ø

8/4 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

3.18 g

Magnetization Direction

↑ axial

Load capacity

2.53 kg / 24.85 N

Magnetic Induction

244.11 mT / 2441 Gs

Coating

[NiCuNi] Nickel

see parameters »

2.47 ZŁ with VAT / pcs + price for transport

2.01 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

2.01 ZŁ

2.47 ZŁ

price from 300 pcs

1.889 ZŁ

2.32 ZŁ

price from 1250 pcs

1.769 ZŁ

2.18 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Hunting for a discount?

Contact us by phone +48 888 99 98 98 otherwise let us know using inquiry form our website.
Specifications and appearance of magnets can be estimated with our magnetic calculator.

Same-day shipping for orders placed before 14:00.

Technical data of the product - MP 14x8/4x3 / N38 - ring magnet

Specification / characteristics - MP 14x8/4x3 / N38 - ring magnet

properties

properties	values
Cat. no.	030181
GTIN/EAN	5906301811985
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	14 mm [±0,1 mm]
internal diameter Ø	8/4 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	3.18 g
Magnetization Direction	↑ axial
Load capacity ~ ?	2.53 kg / 24.85 N
Magnetic Induction ~ ?	244.11 mT / 2441 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 14x8/4x3 / 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 assembly - report

Presented information are the result of a physical simulation. Results rely on algorithms for the material Nd₂Fe₁₄B. Real-world parameters might slightly deviate from the simulation results. Please consider these data as a preliminary roadmap when designing systems.

Table 1: Static force (force vs distance) - power drop
MP 14x8/4x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2121 Gs 212.1 mT	2.53 kg / 5.58 pounds 2530.0 g / 24.8 N	medium risk
1 mm	1927 Gs 192.7 mT	2.09 kg / 4.61 pounds 2090.1 g / 20.5 N	medium risk
2 mm	1676 Gs 167.6 mT	1.58 kg / 3.48 pounds 1579.6 g / 15.5 N	weak grip
3 mm	1410 Gs 141.0 mT	1.12 kg / 2.46 pounds 1117.9 g / 11.0 N	weak grip
5 mm	943 Gs 94.3 mT	0.50 kg / 1.10 pounds 500.1 g / 4.9 N	weak grip
10 mm	335 Gs 33.5 mT	0.06 kg / 0.14 pounds 63.3 g / 0.6 N	weak grip
15 mm	140 Gs 14.0 mT	0.01 kg / 0.02 pounds 11.1 g / 0.1 N	weak grip
20 mm	69 Gs 6.9 mT	0.00 kg / 0.01 pounds 2.7 g / 0.0 N	weak grip
30 mm	24 Gs 2.4 mT	0.00 kg / 0.00 pounds 0.3 g / 0.0 N	weak grip
50 mm	6 Gs 0.6 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	weak grip

Pulling power decreases significantly with every mm of gap. Note that even a microscopic distance (e.g., contamination, paint, dust) significantly diminishes the holding power. Magnetic products operate strongest at the point of direct contact; air break nullifies the power. Notice how rapidly the load capacity plummet, when the magnet does not adhere tightly to the steel surface. When designing the mounting, discard additional spacers.

Table 2: Sliding load (vertical surface)
MP 14x8/4x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.51 kg / 1.12 pounds 506.0 g / 5.0 N
1 mm	Stal (~0.2)	0.42 kg / 0.92 pounds 418.0 g / 4.1 N
2 mm	Stal (~0.2)	0.32 kg / 0.70 pounds 316.0 g / 3.1 N
3 mm	Stal (~0.2)	0.22 kg / 0.49 pounds 224.0 g / 2.2 N
5 mm	Stal (~0.2)	0.10 kg / 0.22 pounds 100.0 g / 1.0 N
10 mm	Stal (~0.2)	0.01 kg / 0.03 pounds 12.0 g / 0.1 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

The following data defines the theoretical shear load required to start the downward movement of the magnet vertically along a vertical steel wall (considering typical friction coefficient). This parameter depends on the separation distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MP 14x8/4x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.76 kg / 1.67 pounds 759.0 g / 7.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.51 kg / 1.12 pounds 506.0 g / 5.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.25 kg / 0.56 pounds 253.0 g / 2.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.27 kg / 2.79 pounds 1265.0 g / 12.4 N

When placing a magnet on a upright surface (e.g., a car body), it will maintain just about 20%-30% of nominal attraction strength. Gravitational force as well as a low friction coefficient influence the fact that holders move down faster than they pull off. Planning a wall mount? Remember that the shear force is significantly lower than the maximum static pull force. On a painted metal, the element will slide down under a noticeably lighter cargo. Application of an anti-slip pad can effectively increase the grip.

Table 4: Steel thickness (substrate influence) - power losses
MP 14x8/4x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.25 kg / 0.56 pounds 253.0 g / 2.5 N
1 mm	25%	0.63 kg / 1.39 pounds 632.5 g / 6.2 N
2 mm	50%	1.27 kg / 2.79 pounds 1265.0 g / 12.4 N
3 mm	75%	1.90 kg / 4.18 pounds 1897.5 g / 18.6 N
5 mm	100%	2.53 kg / 5.58 pounds 2530.0 g / 24.8 N
10 mm	100%	2.53 kg / 5.58 pounds 2530.0 g / 24.8 N
11 mm	100%	2.53 kg / 5.58 pounds 2530.0 g / 24.8 N
12 mm	100%	2.53 kg / 5.58 pounds 2530.0 g / 24.8 N

A thin metal plate is incapable of focus the full magnetic flux, which weakens actual performance of the magnet. Should you attach a powerful product to a too thin substrate, the field will pass right through and the pull force will drop sharply. To achieve full efficiency of this magnet's potential, you require a sufficiently solid element of steel. The saturation phenomenon causes that on thin elements (e.g., appliance housings), the product holds weaker. We suggest choosing the steel dimension according to the table below.

Table 5: Thermal stability (stability) - thermal limit
MP 14x8/4x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	2.53 kg / 5.58 pounds 2530.0 g / 24.8 N	OK
40 °C	-2.2%	2.47 kg / 5.45 pounds 2474.3 g / 24.3 N	OK
60 °C	-4.4%	2.42 kg / 5.33 pounds 2418.7 g / 23.7 N
80 °C	-6.6%	2.36 kg / 5.21 pounds 2363.0 g / 23.2 N
100 °C	-28.8%	1.80 kg / 3.97 pounds 1801.4 g / 17.7 N

Standard neodymium magnets irreversibly lose power past the thermal threshold. Protect against heat – heat can irreversibly destroy this magnet. With every degree above norm, the magnet's force briefly drops. Do not use this magnet near heat sources higher than its safe range. Exceeding the critical threshold will lead to irreversible degradation of magnetic properties.

*Engineering note: Thermal stability depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (low Pc) may lose charge permanently under lower heat stress than taller cylinders. The danger warning in the table points to permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field range
MP 14x8/4x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	3.33 kg / 7.34 pounds 3 647 Gs	0.50 kg / 1.10 pounds 500 g / 4.9 N	N/A
1 mm	3.07 kg / 6.76 pounds 4 070 Gs	0.46 kg / 1.01 pounds 460 g / 4.5 N	2.76 kg / 6.09 pounds ~0 Gs
2 mm	2.75 kg / 6.07 pounds 3 855 Gs	0.41 kg / 0.91 pounds 413 g / 4.0 N	2.48 kg / 5.46 pounds ~0 Gs
3 mm	2.42 kg / 5.33 pounds 3 612 Gs	0.36 kg / 0.80 pounds 362 g / 3.6 N	2.17 kg / 4.79 pounds ~0 Gs
5 mm	1.76 kg / 3.88 pounds 3 084 Gs	0.26 kg / 0.58 pounds 264 g / 2.6 N	1.59 kg / 3.50 pounds ~0 Gs
10 mm	0.66 kg / 1.45 pounds 1 886 Gs	0.10 kg / 0.22 pounds 99 g / 1.0 N	0.59 kg / 1.31 pounds ~0 Gs
20 mm	0.08 kg / 0.18 pounds 671 Gs	0.01 kg / 0.03 pounds 13 g / 0.1 N	0.08 kg / 0.17 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 77 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 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
70 mm	0.00 kg / 0.00 pounds 31 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.00 pounds 21 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.00 pounds 15 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 11 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two strong neodymiums 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. Want to build a powerful holder? Apply two magnets instead of a neodymium and a striker plate. Be careful that when attracting two neodymiums, the pinch force is huge. The repulsion force is a bit weaker than the connection force, but still impressive.
*Field value in repulsion mode reaches ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
* Results refer to sliding force of dual matching neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - precautionary measures
MP 14x8/4x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	5.5 cm
Hearing aid	10 Gs (1.0 mT)	4.5 cm
Timepiece	20 Gs (2.0 mT)	3.5 cm
Mobile device	40 Gs (4.0 mT)	2.5 cm
Remote	50 Gs (5.0 mT)	2.5 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation is a serious hazard to electronics as well as pacemakers. These magnets produce a field that destroys function of digital equipment. Notice: the invisible magnetic field passes through tissues and housings. Special caution must be exercised by people with cochlear implants and drug dispensers. Also at risk are: automatic timepieces, car keys, speakers, and displays. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - collision effects
MP 14x8/4x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	28.89 km/h (8.02 m/s)	0.10 J
30 mm	49.27 km/h (13.69 m/s)	0.30 J
50 mm	63.61 km/h (17.67 m/s)	0.50 J
100 mm	89.96 km/h (24.99 m/s)	0.99 J

NdFeB products are prone to chipping – a violent impact against metal can result in shattering. Pay attention to connection velocity – a magnet released freely becomes dangerous. Kinetic force can cause material chips or dangerous crushing to fingers. Always hold the magnet during installation so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Wear eye protection when handling with large magnets.

Table 9: Coating parameters (durability)
MP 14x8/4x3 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (Flux)
MP 14x8/4x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	3 101 Mx	31.0 µWb
P_c Coefficient	0.28	Low (Flat)

Total magnetic flux emitted by the magnet pole. Essential parameter when building generators as well as sensors. The P_c coefficient defines the working geometry.

Table 11: Hydrostatics and buoyancy
MP 14x8/4x3 / N38

Environment	Effective steel pull	Effect
Air (land)	2.53 kg	Standard
Water (riverbed)	2.90 kg (+0.37 kg buoyancy gain)	+14.5%

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

Water displaces steel, making heavy objects slightly lighter. Buoyancy helps in lifting finds.

1. Vertical hold

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

2. Efficiency vs thickness

*Thin steel (e.g. computer case) drastically weakens 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) = 0.28

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.

Engineering data and GPSR

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%

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: 030181-2026

Quick Unit Converter

Force (pull)

Force in lbs

Field Strength

Tesla (T)

Input data in any box, and the rest convert on the fly.

Check out also products

Product available Ships tomorrow

MP 10x4.3x4 / N38 - ring magnet

1.045 ZŁ brutto / pcs

Product available Ships tomorrow

MW 10x2 / N38 - cylindrical magnet

0.467 ZŁ brutto / pcs

Product available Ships tomorrow

MPL 13x10x5 / N35H - lamellar magnet

2.58 ZŁ brutto / pcs

Product available Ships tomorrow

SM 25x250 [2xM8] / N42 - magnetic separator

688.80 ZŁ brutto / pcs

The ring-shaped magnet MP 14x8/4x3 / N38 is created for mechanical fastening, where glue might fail or be insufficient. Mounting is clean and reversible, unlike gluing. This product with a force of 2.53 kg works great as a cabinet closure, speaker holder, or mounting element in devices.

This is a crucial issue when working with model MP 14x8/4x3 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. 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. 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 does not ensure full waterproofing. 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.

This model is characterized by dimensions Ø14x3 mm and a weight of 3.18 g. The pulling force of this model is an impressive 2.53 kg, which translates to 24.85 N in newtons. The mounting hole diameter is precisely 8/4 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.

Pros as well as cons of rare earth magnets.

Advantages

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

Their power remains stable, and after around 10 years it drops only by ~1% (according to research),
They maintain their magnetic properties even under external field action,
A magnet with a metallic silver surface looks better,
The surface of neodymium magnets generates a powerful magnetic field – this is one of their assets,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
Possibility of detailed modeling as well as adapting to specific needs,
Versatile presence in electronics industry – they are used in data components, drive modules, diagnostic systems, as well as complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which allows their use in compact constructions

Cons

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
NdFeB magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
Limited possibility of creating nuts in the magnet and complex shapes - recommended is casing - magnetic holder.
Potential hazard resulting from small fragments of magnets are risky, if swallowed, which is particularly important in the context of child safety. It is also worth noting that tiny parts of these magnets can be problematic in diagnostics medical in case of swallowing.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what it depends on?

The declared magnet strength represents the limit force, recorded under ideal test conditions, namely:

with the use of a sheet made of special test steel, guaranteeing full magnetic saturation
whose transverse dimension is min. 10 mm
with a plane cleaned and smooth
with direct contact (without impurities)
under vertical application of breakaway force (90-degree angle)
at conditions approx. 20°C

What influences lifting capacity in practice

It is worth knowing that the application force will differ depending on the following factors, in order of importance:

Distance – existence of any layer (rust, tape, gap) interrupts the magnetic circuit, which lowers capacity steeply (even by 50% at 0.5 mm).
Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
Substrate thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
Steel type – mild steel attracts best. Alloy admixtures lower magnetic properties and lifting capacity.
Surface structure – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
Heat – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, in contrast under parallel forces the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate lowers the holding force.

H&S for magnets

Permanent damage

Control the heat. Heating the magnet to high heat will permanently weaken its properties and strength.

Immense force

Exercise caution. Rare earth magnets attract from a distance and snap with massive power, often faster than you can move away.

Warning for allergy sufferers

Medical facts indicate that the nickel plating (standard magnet coating) is a common allergen. If you have an allergy, prevent touching magnets with bare hands or choose versions in plastic housing.

Data carriers

Very strong magnetic fields can destroy records on payment cards, HDDs, and other magnetic media. Maintain a gap of at least 10 cm.

Keep away from electronics

Navigation devices and mobile phones are extremely sensitive to magnetic fields. Close proximity with a strong magnet can permanently damage the internal compass in your phone.

Flammability

Drilling and cutting of neodymium magnets poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Do not give to children

NdFeB magnets are not suitable for play. Swallowing several magnets can lead to them pinching intestinal walls, which poses a critical condition and necessitates urgent medical intervention.

Shattering risk

Protect your eyes. Magnets can fracture upon violent connection, ejecting sharp fragments into the air. Eye protection is mandatory.

Pinching danger

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

Implant safety

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

Warning! Need more info? Read our article: Are neodymium magnets dangerous?

MP 14x8/4x3 / N38 - ring magnet

Technical data of the product - MP 14x8/4x3 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the assembly - report

Table 1: Static force (force vs distance) - power drop MP 14x8/4x3 / N38

Table 2: Sliding load (vertical surface) MP 14x8/4x3 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MP 14x8/4x3 / N38

Table 4: Steel thickness (substrate influence) - power losses MP 14x8/4x3 / N38

Table 5: Thermal stability (stability) - thermal limit MP 14x8/4x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MP 14x8/4x3 / N38

Table 7: Protective zones (electronics) - precautionary measures MP 14x8/4x3 / N38

Table 8: Impact energy (kinetic energy) - collision effects MP 14x8/4x3 / N38

Table 9: Coating parameters (durability) MP 14x8/4x3 / N38

Table 10: Construction data (Flux) MP 14x8/4x3 / N38

Table 11: Hydrostatics and buoyancy MP 14x8/4x3 / N38

1. Vertical hold

2. Efficiency vs thickness

3. Thermal stability

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

Chemical composition

Environmental data

Force (pull)

Field Strength

Check out also products

MP 10x4.3x4 / N38 - ring magnet

MW 10x2 / N38 - cylindrical magnet

MPL 13x10x5 / N35H - lamellar magnet

SM 25x250 [2xM8] / N42 - magnetic separator

Pros as well as cons of rare earth magnets.

Advantages

Cons

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what it depends on?

What influences lifting capacity in practice

H&S for magnets

Permanent damage

Immense force

Warning for allergy sufferers

Data carriers

Keep away from electronics

Flammability

Do not give to children

Shattering risk

Pinching danger

Implant safety

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - power drop
MP 14x8/4x3 / N38

Table 2: Sliding load (vertical surface)
MP 14x8/4x3 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MP 14x8/4x3 / N38

Table 4: Steel thickness (substrate influence) - power losses
MP 14x8/4x3 / N38

Table 5: Thermal stability (stability) - thermal limit
MP 14x8/4x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MP 14x8/4x3 / N38

Table 7: Protective zones (electronics) - precautionary measures
MP 14x8/4x3 / N38

Table 8: Impact energy (kinetic energy) - collision effects
MP 14x8/4x3 / N38

Table 9: Coating parameters (durability)
MP 14x8/4x3 / N38

Table 10: Construction data (Flux)
MP 14x8/4x3 / N38

Table 11: Hydrostatics and buoyancy
MP 14x8/4x3 / N38