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

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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

check specifications »

2.47 ZŁ with VAT / pcs + price for transport

2.01 ZŁ net + 23% VAT / pcs

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Pick up the phone and ask +48 22 499 98 98 otherwise contact us via request form the contact section.
Lifting power along with appearance of magnets can be analyzed with our force calculator.

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Technical 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

Technical modeling of the assembly - data

The following values constitute the direct effect of a mathematical calculation. Results rely on models for the class Nd₂Fe₁₄B. Operational parameters might slightly deviate from the simulation results. Please consider these calculations as a preliminary roadmap during assembly planning.

Table 1: Static pull force (pull vs distance) - interaction chart
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 LBS 2530.0 g / 24.8 N	strong
1 mm	1927 Gs 192.7 mT	2.09 kg / 4.61 LBS 2090.1 g / 20.5 N	strong
2 mm	1676 Gs 167.6 mT	1.58 kg / 3.48 LBS 1579.6 g / 15.5 N	weak grip
3 mm	1410 Gs 141.0 mT	1.12 kg / 2.46 LBS 1117.9 g / 11.0 N	weak grip
5 mm	943 Gs 94.3 mT	0.50 kg / 1.10 LBS 500.1 g / 4.9 N	weak grip
10 mm	335 Gs 33.5 mT	0.06 kg / 0.14 LBS 63.3 g / 0.6 N	weak grip
15 mm	140 Gs 14.0 mT	0.01 kg / 0.02 LBS 11.1 g / 0.1 N	weak grip
20 mm	69 Gs 6.9 mT	0.00 kg / 0.01 LBS 2.7 g / 0.0 N	weak grip
30 mm	24 Gs 2.4 mT	0.00 kg / 0.00 LBS 0.3 g / 0.0 N	weak grip
50 mm	6 Gs 0.6 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip

Grip strength weakens drastically with every subsequent millimeter of gap. Remember that even a very thin break (e.g., contamination, varnish, dust) significantly weakens the grip. Neodymiums work strongest at the point of direct contact; air break weakens the power. Observe how flashily the load capacity drop, when the magnet does not adhere flatly to the steel surface. When calculating the assembly, avoid additional spacers.

Table 2: Vertical force (wall)
MP 14x8/4x3 / N38

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

This section shows the theoretical weight limit required to start the sliding of the magnet down along a vertical steel wall (assuming standard friction). This value depends on the separation distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - 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 LBS 759.0 g / 7.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.51 kg / 1.12 LBS 506.0 g / 5.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.25 kg / 0.56 LBS 253.0 g / 2.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.27 kg / 2.79 LBS 1265.0 g / 12.4 N

When placing a element on a vertical surface (e.g., a fridge), it you can count on only about 1/5 of nominal attraction strength. Gravitational force as well as a weak degree of grip influence the fact that holders slide down faster than they detach. Planning a hanger? Consider that the shear force is significantly lower than the maximum static pull force. On a smooth steel, the holder will slide down under a significantly smaller load. Application of an anti-slip pad can effectively raise the stability.

Table 4: Material efficiency (saturation) - 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 LBS 253.0 g / 2.5 N
1 mm	25%	0.63 kg / 1.39 LBS 632.5 g / 6.2 N
2 mm	50%	1.27 kg / 2.79 LBS 1265.0 g / 12.4 N
3 mm	75%	1.90 kg / 4.18 LBS 1897.5 g / 18.6 N
5 mm	100%	2.53 kg / 5.58 LBS 2530.0 g / 24.8 N
10 mm	100%	2.53 kg / 5.58 LBS 2530.0 g / 24.8 N
11 mm	100%	2.53 kg / 5.58 LBS 2530.0 g / 24.8 N
12 mm	100%	2.53 kg / 5.58 LBS 2530.0 g / 24.8 N

A too thin steel is not enough to take in the full magnetic flux, which weakens actual performance of the holder. Should you install a neodymium to a thin surface, the flux will pass right through and the attraction force will be weaker. To achieve 100% of this magnet's potential, you require a sufficiently solid backing of metal. The material oversaturation causes that on delicate walls (e.g., appliance housings), the holder holds weaker. We advise picking the steel cross-section based on the following data.

Table 5: Thermal stability (material behavior) - resistance threshold
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 LBS 2530.0 g / 24.8 N	OK
40 °C	-2.2%	2.47 kg / 5.45 LBS 2474.3 g / 24.3 N	OK
60 °C	-4.4%	2.42 kg / 5.33 LBS 2418.7 g / 23.7 N
80 °C	-6.6%	2.36 kg / 5.21 LBS 2363.0 g / 23.2 N
100 °C	-28.8%	1.80 kg / 3.97 LBS 1801.4 g / 17.7 N

Classic neodymiums change their properties parameters after exceeding the maximum temperature. Watch out for overheating – high temperature can irreversibly demagnetize this product. With every degree above norm, the magnet's capacity temporarily decreases. Refrain from using this magnet near heat sources higher than its operating temperature limit. Too high temperature will result in permanent loss of magnetic properties.

*Technical advisory: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Low-profile magnets (low permeance coefficient) are more susceptible to demagnetization sooner than taller cylinders. The danger warning in the table points to permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MP 14x8/4x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	3.33 kg / 7.34 LBS 3 647 Gs	0.50 kg / 1.10 LBS 500 g / 4.9 N	N/A
1 mm	3.07 kg / 6.76 LBS 4 070 Gs	0.46 kg / 1.01 LBS 460 g / 4.5 N	2.76 kg / 6.09 LBS ~0 Gs
2 mm	2.75 kg / 6.07 LBS 3 855 Gs	0.41 kg / 0.91 LBS 413 g / 4.0 N	2.48 kg / 5.46 LBS ~0 Gs
3 mm	2.42 kg / 5.33 LBS 3 612 Gs	0.36 kg / 0.80 LBS 362 g / 3.6 N	2.17 kg / 4.79 LBS ~0 Gs
5 mm	1.76 kg / 3.88 LBS 3 084 Gs	0.26 kg / 0.58 LBS 264 g / 2.6 N	1.59 kg / 3.50 LBS ~0 Gs
10 mm	0.66 kg / 1.45 LBS 1 886 Gs	0.10 kg / 0.22 LBS 99 g / 1.0 N	0.59 kg / 1.31 LBS ~0 Gs
20 mm	0.08 kg / 0.18 LBS 671 Gs	0.01 kg / 0.03 LBS 13 g / 0.1 N	0.08 kg / 0.17 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 77 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
60 mm	0.00 kg / 0.00 LBS 47 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
70 mm	0.00 kg / 0.00 LBS 31 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
80 mm	0.00 kg / 0.00 LBS 21 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
90 mm	0.00 kg / 0.00 LBS 15 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
100 mm	0.00 kg / 0.00 LBS 11 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnetic products attract each other from a much further distance than a magnet and steel combination. The setup of two magnets creates a more powerful interaction and a wider radius of operation. Designing a powerful holder? Utilize two neodymiums instead of a neodymium and a steel. Remember that when attracting two neodymiums, the pinch force is massive. The repulsion force is marginally weaker than the attraction, but still large.
*Field value in repulsion mode drops to ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Attention: Estimates apply to shear force of a pair of same magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - warnings
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
Mechanical watch	20 Gs (2.0 mT)	3.5 cm
Phone / Smartphone	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 poses a large risk to IT equipment and pacemakers. These NdFeB products produce a field that prevents correct functioning of sensitive medical devices. Notice: the invisible magnetic field penetrates the body and glass. Exceptional care must be exercised by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, remotes, membranes, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - warning
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

Neodymium magnets are delicate – a violent impact against metal can result in shattering. Pay attention to connection velocity – a magnet released freely becomes dangerous. Striking energy can cause material chips or injury to fingers. Always hold the magnet during installation so it doesn't hit violently against the metal. A collision at high speed almost guarantees destruction of the magnet. Use safety goggles when working with powerful specimens.

Table 9: Surface protection spec
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)

The following table defines the conditions under which this product can be safely used. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (P_c)
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 passing through the pole surface. Essential parameter in coil applications as well as sensors. P_c value defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
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.

Contrary to myths, water does not block the magnetic field. However, remember the water resistance when pulling the rope quickly.

1. Shear force

*Caution: On a vertical wall, the magnet holds only a fraction of its nominal pull.

2. Steel saturation

*Thin steel (e.g. computer case) drastically reduces the holding force.

3. Power loss vs temp

*For N38 grade, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.28

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

Magnet Unit Converter

Force (pull)

Force in kg

Force in lbs

Magnetic Induction

Gauss (Gs)

Induction (T)

Just fill in one field, to let the tool fill in everything else for you.

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The ring magnet with a hole MP 14x8/4x3 / N38 is created for permanent mounting, 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 spacer 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.

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 can be damaged when tightening the screw, which will become a corrosion focus. This product is dedicated for indoor use. For outdoor applications, we recommend choosing rubberized holders or additional protection with varnish.

A screw or bolt with a thread diameter smaller than 8/4 mm fits this model. 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 (14 mm), so it doesn't protrude beyond the outline.

This model is characterized by dimensions Ø14x3 mm and a weight of 3.18 g. The key parameter here is the lifting capacity amounting to approximately 2.53 kg (force ~24.85 N). The mounting hole diameter is precisely 8/4 mm.

The poles are located on the planes with holes, not on the sides of the ring. 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.

Strengths and weaknesses of Nd₂Fe₁₄B magnets.

Pros

Besides their immense strength, neodymium magnets offer the following advantages:

They have unchanged lifting capacity, and over more than ten years their attraction force decreases symbolically – ~1% (according to theory),
They retain their magnetic properties even under external field action,
By using a lustrous coating of nickel, the element has an aesthetic look,
Neodymium magnets create maximum magnetic induction on a contact point, which ensures high operational effectiveness,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures reaching 230°C and above...
Thanks to versatility in constructing and the ability to adapt to unusual requirements,
Key role in high-tech industry – they serve a role in data components, drive modules, precision medical tools, also other advanced devices.
Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Weaknesses

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
Limited possibility of producing nuts in the magnet and complex shapes - recommended is cover - magnetic holder.
Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small components of these products can disrupt the diagnostic process medical in case of swallowing.
With mass production the cost of neodymium magnets can be a barrier,

Lifting parameters

Maximum holding power of the magnet – what contributes to it?

The load parameter shown concerns the limit force, recorded under ideal test conditions, namely:

using a sheet made of high-permeability steel, functioning as a circuit closing element
whose transverse dimension equals approx. 10 mm
with an polished contact surface
with total lack of distance (without impurities)
for force applied at a right angle (pull-off, not shear)
at ambient temperature approx. 20 degrees Celsius

Lifting capacity in real conditions – factors

Bear in mind that the application force may be lower influenced by the following factors, in order of importance:

Space between surfaces – every millimeter of distance (caused e.g. by varnish or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
Plate thickness – too thin steel causes magnetic saturation, causing part of the power to be escaped into the air.
Steel grade – the best choice is pure iron steel. Stainless steels may attract less.
Surface condition – smooth surfaces guarantee perfect abutment, which increases force. Rough surfaces reduce efficiency.
Temperature – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.

Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, in contrast under shearing force the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate decreases the load capacity.

Precautions when working with NdFeB magnets

Do not give to children

These products are not suitable for play. Swallowing a few magnets can lead to them attracting across intestines, which constitutes a severe health hazard and necessitates immediate surgery.

Safe operation

Handle magnets with awareness. Their immense force can shock even professionals. Plan your moves and do not underestimate their power.

Risk of cracking

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

Life threat

Warning for patients: Strong magnetic fields disrupt electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Nickel coating and allergies

Studies show that nickel (the usual finish) is a common allergen. For allergy sufferers, refrain from direct skin contact or opt for coated magnets.

Demagnetization risk

Watch the temperature. Exposing the magnet to high heat will permanently weaken its properties and pulling force.

Hand protection

Danger of trauma: The pulling power is so immense that it can cause blood blisters, crushing, and even bone fractures. Use thick gloves.

Compass and GPS

Be aware: rare earth magnets generate a field that interferes with sensitive sensors. Keep a separation from your mobile, tablet, and GPS.

Fire warning

Dust created during machining of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Safe distance

Device Safety: Neodymium magnets can damage payment cards and delicate electronics (pacemakers, hearing aids, timepieces).

Important! Details about risks in the article: Magnet Safety Guide.

MP 14x8/4x3 / N38 - ring magnet

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the assembly - data

Table 1: Static pull force (pull vs distance) - interaction chart MP 14x8/4x3 / N38

Table 2: Vertical force (wall) MP 14x8/4x3 / N38

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

Table 4: Material efficiency (saturation) - power losses MP 14x8/4x3 / N38

Table 5: Thermal stability (material behavior) - resistance threshold MP 14x8/4x3 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system MP 14x8/4x3 / N38

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

Table 8: Collisions (cracking risk) - warning MP 14x8/4x3 / N38

Table 9: Surface protection spec MP 14x8/4x3 / N38

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

Table 11: Underwater work (magnet fishing) MP 14x8/4x3 / N38

1. Shear force

2. Steel saturation

3. Power loss vs temp

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

Chemical composition

Environmental data

Force (pull)

Magnetic Induction

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Strengths and weaknesses of Nd2Fe14B magnets.

Pros

Weaknesses

Lifting parameters

Maximum holding power of the magnet – what contributes to it?

Lifting capacity in real conditions – factors

Precautions when working with NdFeB magnets

Do not give to children

Safe operation

Risk of cracking

Life threat

Nickel coating and allergies

Demagnetization risk

Hand protection

Compass and GPS

Fire warning

Safe distance

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - interaction chart
MP 14x8/4x3 / N38

Table 2: Vertical force (wall)
MP 14x8/4x3 / N38

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

Table 4: Material efficiency (saturation) - power losses
MP 14x8/4x3 / N38

Table 5: Thermal stability (material behavior) - resistance threshold
MP 14x8/4x3 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MP 14x8/4x3 / N38

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

Table 8: Collisions (cracking risk) - warning
MP 14x8/4x3 / N38

Table 9: Surface protection spec
MP 14x8/4x3 / N38

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

Table 11: Underwater work (magnet fishing)
MP 14x8/4x3 / N38

Strengths and weaknesses of Nd₂Fe₁₄B magnets.