Product available Ships today (order by 14:00)

MP 5x2.7/1.2x5 C / 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 030201

GTIN/EAN: 5906301812180

5.00

Diameter

5 mm [±0,1 mm]

internal diameter Ø

2.7/1.2 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

0.69 g

Magnetization Direction

↑ axial

Load capacity

0.75 kg / 7.31 N

Magnetic Induction

553.14 mT / 5531 Gs

Coating

[NiCuNi] Nickel

product details »

0.836 ZŁ with VAT / pcs + price for transport

0.680 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

0.680 ZŁ

0.836 ZŁ

price from 900 pcs

0.639 ZŁ

0.786 ZŁ

price from 3700 pcs

0.598 ZŁ

0.736 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure about your choice?

Call us +48 22 499 98 98 or contact us by means of inquiry form the contact page.
Strength as well as shape of a magnet can be checked on our force calculator.

Orders placed before 14:00 will be shipped the same business day.

Technical - MP 5x2.7/1.2x5 C / N38 - ring magnet

Specification / characteristics - MP 5x2.7/1.2x5 C / N38 - ring magnet

properties

properties	values
Cat. no.	030201
GTIN/EAN	5906301812180
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	5 mm [±0,1 mm]
internal diameter Ø	2.7/1.2 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	0.69 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.75 kg / 7.31 N
Magnetic Induction ~ ?	553.14 mT / 5531 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 5x2.7/1.2x5 C / 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 simulation of the product - report

Presented information constitute the outcome of a physical calculation. Values are based on models for the material Nd₂Fe₁₄B. Actual performance may differ from theoretical values. Treat these calculations as a reference point during assembly planning.

Table 1: Static pull force (force vs distance) - power drop
MP 5x2.7/1.2x5 C / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5322 Gs 532.2 mT	0.75 kg / 1.65 LBS 750.0 g / 7.4 N	safe
1 mm	3295 Gs 329.5 mT	0.29 kg / 0.63 LBS 287.5 g / 2.8 N	safe
2 mm	1883 Gs 188.3 mT	0.09 kg / 0.21 LBS 93.9 g / 0.9 N	safe
3 mm	1098 Gs 109.8 mT	0.03 kg / 0.07 LBS 31.9 g / 0.3 N	safe
5 mm	440 Gs 44.0 mT	0.01 kg / 0.01 LBS 5.1 g / 0.1 N	safe
10 mm	92 Gs 9.2 mT	0.00 kg / 0.00 LBS 0.2 g / 0.0 N	safe
15 mm	33 Gs 3.3 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe
20 mm	15 Gs 1.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe
30 mm	5 Gs 0.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe
50 mm	1 Gs 0.1 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe

Grip strength drops significantly with every mm of spacing. Note that even the smallest gap (e.g., contamination, paint, veneer) noticeably weakens the grip. Magnets hold most effectively in perfect adhesion; gap drastically cuts the force. Analyze how rapidly the load capacity drop, when the magnet does not adhere tightly to the metal substrate. When planning the assembly, discard unnecessary gaps.

Table 2: Shear force (wall)
MP 5x2.7/1.2x5 C / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.15 kg / 0.33 LBS 150.0 g / 1.5 N
1 mm	Stal (~0.2)	0.06 kg / 0.13 LBS 58.0 g / 0.6 N
2 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 18.0 g / 0.2 N
3 mm	Stal (~0.2)	0.01 kg / 0.01 LBS 6.0 g / 0.1 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 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

The table below calculates the approximate weight limit sufficient to start the shifting of the magnet down along a upright metal surface (considering typical friction coefficient). This value depends on the separation distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MP 5x2.7/1.2x5 C / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.22 kg / 0.50 LBS 225.0 g / 2.2 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.15 kg / 0.33 LBS 150.0 g / 1.5 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.08 kg / 0.17 LBS 75.0 g / 0.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.38 kg / 0.83 LBS 375.0 g / 3.7 N

When placing a magnet on a vertical plane (e.g., a car body), it will only hold only about 1/5 of its maximum pull force. Gravity as well as a low friction coefficient cause that holders slide down easier than they pull off. Designing a wall mount? Remember that the sliding force is significantly lower than the perpendicular breakaway force. On a painted metal, the magnet will slip down under a significantly smaller load. Application of an anti-slip layer can drastically raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MP 5x2.7/1.2x5 C / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.08 kg / 0.17 LBS 75.0 g / 0.7 N
1 mm	25%	0.19 kg / 0.41 LBS 187.5 g / 1.8 N
2 mm	50%	0.38 kg / 0.83 LBS 375.0 g / 3.7 N
3 mm	75%	0.56 kg / 1.24 LBS 562.5 g / 5.5 N
5 mm	100%	0.75 kg / 1.65 LBS 750.0 g / 7.4 N
10 mm	100%	0.75 kg / 1.65 LBS 750.0 g / 7.4 N
11 mm	100%	0.75 kg / 1.65 LBS 750.0 g / 7.4 N
12 mm	100%	0.75 kg / 1.65 LBS 750.0 g / 7.4 N

A too thin steel is not enough to take in the entire magnetic field, which wastes potential of the magnet. If you mount a strong magnet to a thin surface, the field will penetrate right through and the pull force will drop sharply. To achieve 100% of this magnet's potential, you require a sufficiently solid piece of steel. The saturation effect means that on thin elements (e.g., car bodies), the magnet works worse. We suggest choosing the steel dimension according to the table below.

Table 5: Thermal resistance (material behavior) - thermal limit
MP 5x2.7/1.2x5 C / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.75 kg / 1.65 LBS 750.0 g / 7.4 N	OK
40 °C	-2.2%	0.73 kg / 1.62 LBS 733.5 g / 7.2 N	OK
60 °C	-4.4%	0.72 kg / 1.58 LBS 717.0 g / 7.0 N	OK
80 °C	-6.6%	0.70 kg / 1.54 LBS 700.5 g / 6.9 N
100 °C	-28.8%	0.53 kg / 1.18 LBS 534.0 g / 5.2 N

Ordinary NdFeB products lose power past the thermal threshold. Avoid high temperatures – excessive heat can irreversibly demagnetize this product. With increasing heat, the magnet's power temporarily decreases. Do not use this magnet close to heaters exceeding its safe range. Ignoring the limit will result in permanent loss of magnetic properties.

*Technical advisory: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (low permeance coefficient) risk losing magnetic properties sooner than long magnets. The danger warning in the table points to permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MP 5x2.7/1.2x5 C / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.75 kg / 6.06 LBS 5 924 Gs	0.41 kg / 0.91 LBS 412 g / 4.0 N	N/A
1 mm	1.77 kg / 3.90 LBS 8 541 Gs	0.27 kg / 0.58 LBS 265 g / 2.6 N	1.59 kg / 3.51 LBS ~0 Gs
2 mm	1.05 kg / 2.32 LBS 6 590 Gs	0.16 kg / 0.35 LBS 158 g / 1.5 N	0.95 kg / 2.09 LBS ~0 Gs
3 mm	0.60 kg / 1.33 LBS 4 992 Gs	0.09 kg / 0.20 LBS 91 g / 0.9 N	0.54 kg / 1.20 LBS ~0 Gs
5 mm	0.20 kg / 0.44 LBS 2 860 Gs	0.03 kg / 0.07 LBS 30 g / 0.3 N	0.18 kg / 0.39 LBS ~0 Gs
10 mm	0.02 kg / 0.04 LBS 880 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.04 LBS ~0 Gs
20 mm	0.00 kg / 0.00 LBS 184 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 16 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 10 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 6 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 4 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 3 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 2 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two strong neodymiums attract each other from a significantly greater distance than a magnet and steel setup. The setup of two magnets creates a more powerful interaction and a further horizon of action. Designing a strong closure? Use a pair of magnets instead of one magnet and a steel. Exercise caution that when bringing together two magnets, the impact force is massive. The repulsion force is slightly lower than the attraction, but still large.
*Field value in repulsion mode reaches ~0 Gs at the geometric center of the gap (resulting from vector opposition).
Note: Calculations demonstrate sliding force of a pair of identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - warnings
MP 5x2.7/1.2x5 C / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	3.0 cm
Hearing aid	10 Gs (1.0 mT)	2.5 cm
Mechanical watch	20 Gs (2.0 mT)	2.0 cm
Mobile device	40 Gs (4.0 mT)	1.5 cm
Remote	50 Gs (5.0 mT)	1.5 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	0.5 cm

A strong magnetic field is a real danger to electronic devices as well as medical implants. These magnets generate a flux that destroys function of sensitive medical devices. Notice: the invisible magnetic field penetrates the body and housings. Exceptional care must be exercised by people with cochlear implants and insulin pumps. The risk also applies to: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - collision effects
MP 5x2.7/1.2x5 C / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	33.26 km/h (9.24 m/s)	0.03 J
30 mm	57.59 km/h (16.00 m/s)	0.09 J
50 mm	74.35 km/h (20.65 m/s)	0.15 J
100 mm	105.14 km/h (29.21 m/s)	0.29 J

Neodymium magnets are very brittle – a collision with steel risks their cracking. Pay attention to connection velocity – a neodymium left loose speeds with massive force. Striking energy can cause material chips or injury to fingers. Always hold the magnet during bringing near metal so it doesn't hit with great force against the steel surface. A collision at high speed ends with a crack of the magnet. Wear eye protection when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MP 5x2.7/1.2x5 C / 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 (Flux)
MP 5x2.7/1.2x5 C / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	862 Mx	8.6 µWb
P_c Coefficient	0.83	High (Stable)

Total magnetic flux passing through the pole surface. Essential parameter in coil applications as well as sensors. P_c value determines the working geometry.

Table 11: Hydrostatics and buoyancy
MP 5x2.7/1.2x5 C / N38

Environment	Effective steel pull	Effect
Air (land)	0.75 kg	Standard
Water (riverbed)	0.86 kg (+0.11 kg buoyancy gain)	+14.5%

Rust risk: 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. 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 holds merely approx. 20-30% of its perpendicular strength.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) significantly weakens the holding force.

3. Temperature resistance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.83

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 specification and ecology

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%

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: 030201-2026

Quick Unit Converter

Force (pull)

Kilograms (kg)

Force (N)

Pounds (lbs)

Field Strength

Induction (Gs)

Enter your figure into any field, and all other values convert instantly.

MPL 25x12.5x5 / N38 - lamellar magnet

4.92 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

UMT 29x38 black / N38 - board holder

6.81 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

SM 25x400 [2xM8] / N52 - magnetic separator

1205.40 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

UMGGW 29x8 [M4] GW / N38 - magnetic holder rubber internal thread

8.61 ZŁ brutto / pcs

The ring magnet with a hole MP 5x2.7/1.2x5 C / N38 is created for permanent mounting, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables quick installation to wood, wall, plastic, or metal. This product with a force of 0.75 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. The flat screw head should evenly press the magnet. 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. Damage to the protective layer during assembly is the most common cause of rusting. This product is dedicated for indoor use. For outdoor applications, we recommend choosing magnets in hermetic housing or additional protection with varnish.

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. Always check that the screw head is not larger than the outer diameter of the magnet (5 mm), so it doesn't protrude beyond the outline.

This model is characterized by dimensions Ø5x5 mm and a weight of 0.69 g. The pulling force of this model is an impressive 0.75 kg, which translates to 7.31 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 2.7/1.2 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. We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Pros as well as cons of rare earth magnets.

Benefits

Besides their immense field intensity, neodymium magnets offer the following advantages:

They do not lose strength, even over around 10 years – the reduction in strength is only ~1% (theoretically),
They retain their magnetic properties even under strong external field,
Thanks to the reflective finish, the surface of Ni-Cu-Ni, gold, or silver-plated gives an visually attractive appearance,
The surface of neodymium magnets generates a concentrated magnetic field – this is a key feature,
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 shaping and optimizing to complex requirements,
Versatile presence in advanced technology sectors – they are commonly used in hard drives, electric drive systems, advanced medical instruments, and modern systems.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which makes them useful in small systems

Disadvantages

Disadvantages of neodymium magnets:

To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
Due to limitations in realizing threads and complex forms in magnets, we recommend using casing - magnetic mechanism.
Potential hazard to health – tiny shards of magnets can be dangerous, if swallowed, which becomes key in the context of child safety. It is also worth noting that small components of these products are able to be problematic in diagnostics medical in case of swallowing.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Best holding force of the magnet in ideal parameters – what contributes to it?

The lifting capacity listed is a measurement result conducted under specific, ideal conditions:

with the application of a yoke made of low-carbon steel, ensuring maximum field concentration
possessing a massiveness of min. 10 mm to ensure full flux closure
with a surface cleaned and smooth
with direct contact (without coatings)
under perpendicular application of breakaway force (90-degree angle)
in temp. approx. 20°C

Determinants of lifting force in real conditions

Holding efficiency is influenced by specific conditions, mainly (from priority):

Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of generating force.
Material composition – not every steel reacts the same. High carbon content weaken the interaction with the magnet.
Surface finish – full contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Operating temperature – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under shearing force the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate lowers the load capacity.

H&S for magnets

Swallowing risk

Adult use only. Small elements pose a choking risk, causing intestinal necrosis. Keep out of reach of children and animals.

Eye protection

Neodymium magnets are ceramic materials, which means they are very brittle. Collision of two magnets leads to them breaking into small pieces.

Physical harm

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

Magnetic media

Do not bring magnets close to a purse, computer, or TV. The magnetism can irreversibly ruin these devices and erase data from cards.

Mechanical processing

Fire hazard: Neodymium dust is explosive. Do not process magnets without safety gear as this risks ignition.

Heat sensitivity

Keep cool. Neodymium magnets are sensitive to heat. If you require resistance above 80°C, ask us about HT versions (H, SH, UH).

Sensitization to coating

Certain individuals experience a sensitization to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching can result in dermatitis. We recommend use protective gloves.

Magnetic interference

A powerful magnetic field disrupts the operation of magnetometers in phones and GPS navigation. Maintain magnets close to a smartphone to prevent breaking the sensors.

Respect the power

Handle magnets with awareness. Their huge power can shock even professionals. Plan your moves and respect their force.

Warning for heart patients

For implant holders: Powerful magnets disrupt electronics. Maintain at least 30 cm distance or request help to handle the magnets.

Attention! Looking for details? Read our article: Why are neodymium magnets dangerous?

MP 5x2.7/1.2x5 C / N38 - ring magnet

Technical - MP 5x2.7/1.2x5 C / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the product - report

Table 1: Static pull force (force vs distance) - power drop MP 5x2.7/1.2x5 C / N38

Table 2: Shear force (wall) MP 5x2.7/1.2x5 C / N38

Table 3: Vertical assembly (sliding) - vertical pull MP 5x2.7/1.2x5 C / N38

Table 4: Material efficiency (saturation) - sheet metal selection MP 5x2.7/1.2x5 C / N38

Table 5: Thermal resistance (material behavior) - thermal limit MP 5x2.7/1.2x5 C / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MP 5x2.7/1.2x5 C / N38

Table 7: Hazards (electronics) - warnings MP 5x2.7/1.2x5 C / N38

Table 8: Dynamics (kinetic energy) - collision effects MP 5x2.7/1.2x5 C / N38

Table 9: Anti-corrosion coating durability MP 5x2.7/1.2x5 C / N38

Table 10: Construction data (Flux) MP 5x2.7/1.2x5 C / N38

Table 11: Hydrostatics and buoyancy MP 5x2.7/1.2x5 C / N38

1. Sliding resistance

2. Steel thickness impact

3. Temperature resistance

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

Chemical composition

Ecology and recycling (GPSR)

Force (pull)

Field Strength

See also proposals

MPL 25x12.5x5 / N38 - lamellar magnet

UMT 29x38 black / N38 - board holder

SM 25x400 [2xM8] / N52 - magnetic separator

UMGGW 29x8 [M4] GW / N38 - magnetic holder rubber internal thread

Pros as well as cons of rare earth magnets.

Benefits

Disadvantages

Lifting parameters

Best holding force of the magnet in ideal parameters – what contributes to it?

Determinants of lifting force in real conditions

H&S for magnets

Swallowing risk

Eye protection

Physical harm

Magnetic media

Mechanical processing

Heat sensitivity

Sensitization to coating

Magnetic interference

Respect the power

Warning for heart patients

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - power drop
MP 5x2.7/1.2x5 C / N38

Table 2: Shear force (wall)
MP 5x2.7/1.2x5 C / N38

Table 3: Vertical assembly (sliding) - vertical pull
MP 5x2.7/1.2x5 C / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MP 5x2.7/1.2x5 C / N38

Table 5: Thermal resistance (material behavior) - thermal limit
MP 5x2.7/1.2x5 C / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MP 5x2.7/1.2x5 C / N38

Table 7: Hazards (electronics) - warnings
MP 5x2.7/1.2x5 C / N38

Table 8: Dynamics (kinetic energy) - collision effects
MP 5x2.7/1.2x5 C / N38

Table 9: Anti-corrosion coating durability
MP 5x2.7/1.2x5 C / N38

Table 10: Construction data (Flux)
MP 5x2.7/1.2x5 C / N38

Table 11: Hydrostatics and buoyancy
MP 5x2.7/1.2x5 C / N38