Product available Ships today (order by 14:00)

MW 12.5x2 / N38 - cylindrical 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

cylindrical magnet

Catalog no 010014

GTIN/EAN: 5906301810131

5.00

Diameter Ø

12.5 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

1.84 g

Magnetization Direction

↑ axial

Load capacity

1.42 kg / 13.89 N

Magnetic Induction

188.88 mT / 1889 Gs

Coating

[NiCuNi] Nickel

product parameters »

0.935 ZŁ with VAT / pcs + price for transport

0.760 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

0.760 ZŁ

0.935 ZŁ

price from 768 pcs

0.684 ZŁ

0.841 ZŁ

price from 1536 pcs

0.669 ZŁ

0.823 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Need help making a decision?

Call us now +48 22 499 98 98 otherwise drop us a message through form through our site.
Parameters as well as appearance of magnetic components can be estimated with our force calculator.

Order by 14:00 and we’ll ship today!

Product card - MW 12.5x2 / N38 - cylindrical magnet

Specification / characteristics - MW 12.5x2 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010014
GTIN/EAN	5906301810131
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 Ø	12.5 mm [±0,1 mm]
Height	2 mm [±0,1 mm]
Weight	1.84 g
Magnetization Direction	↑ axial
Load capacity ~ ?	1.42 kg / 13.89 N
Magnetic Induction ~ ?	188.88 mT / 1889 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 12.5x2 / N38 - cylindrical 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 magnet - technical parameters

The following values represent the outcome of a physical analysis. Results rely on models for the material Nd₂Fe₁₄B. Operational performance might slightly differ from theoretical values. Use these data as a supplementary guide during assembly planning.

Table 1: Static pull force (pull vs gap) - characteristics
MW 12.5x2 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1888 Gs 188.8 mT	1.42 kg / 3.13 pounds 1420.0 g / 13.9 N	low risk
1 mm	1703 Gs 170.3 mT	1.16 kg / 2.55 pounds 1155.6 g / 11.3 N	low risk
2 mm	1453 Gs 145.3 mT	0.84 kg / 1.85 pounds 840.3 g / 8.2 N	low risk
3 mm	1190 Gs 119.0 mT	0.56 kg / 1.24 pounds 564.1 g / 5.5 N	low risk
5 mm	752 Gs 75.2 mT	0.23 kg / 0.50 pounds 225.0 g / 2.2 N	low risk
10 mm	241 Gs 24.1 mT	0.02 kg / 0.05 pounds 23.2 g / 0.2 N	low risk
15 mm	96 Gs 9.6 mT	0.00 kg / 0.01 pounds 3.7 g / 0.0 N	low risk
20 mm	46 Gs 4.6 mT	0.00 kg / 0.00 pounds 0.9 g / 0.0 N	low risk
30 mm	15 Gs 1.5 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	low risk
50 mm	4 Gs 0.4 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk

Magnetic force drops drastically per each millimeter of gap. Keep in mind that every additional insulation layer (e.g., dirt, varnish, dust) noticeably reduces the pull force. Neodymiums hold most effectively during direct contact; distance kills the power. Notice how quickly the load capacity plummet, when the magnet does not touch tightly to the metal substrate. When designing the mounting, discard unnecessary gaps.

Table 2: Shear force (wall)
MW 12.5x2 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.28 kg / 0.63 pounds 284.0 g / 2.8 N
1 mm	Stal (~0.2)	0.23 kg / 0.51 pounds 232.0 g / 2.3 N
2 mm	Stal (~0.2)	0.17 kg / 0.37 pounds 168.0 g / 1.6 N
3 mm	Stal (~0.2)	0.11 kg / 0.25 pounds 112.0 g / 1.1 N
5 mm	Stal (~0.2)	0.05 kg / 0.10 pounds 46.0 g / 0.5 N
10 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 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

This section indicates the theoretical holding capacity necessary to start the downward movement of the magnet down along a vertical steel plate (considering typical friction coefficient). This parameter is relative to the separation distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 12.5x2 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.43 kg / 0.94 pounds 426.0 g / 4.2 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.28 kg / 0.63 pounds 284.0 g / 2.8 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.14 kg / 0.31 pounds 142.0 g / 1.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.71 kg / 1.57 pounds 710.0 g / 7.0 N

When placing a element on a upright surface (e.g., a fridge), it will only hold barely approx. 1/5 of its nominal power. Gravity and a weak degree of grip cause that products slip faster than they pop off the substrate. Want to create a wall mount? Remember that the sliding force is noticeably lower than the maximum static pull force. On a painted metal, the magnet will slip down under a noticeably lighter cargo. Application of an anti-slip pad can drastically improve the result.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 12.5x2 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.14 kg / 0.31 pounds 142.0 g / 1.4 N
1 mm	25%	0.36 kg / 0.78 pounds 355.0 g / 3.5 N
2 mm	50%	0.71 kg / 1.57 pounds 710.0 g / 7.0 N
3 mm	75%	1.07 kg / 2.35 pounds 1065.0 g / 10.4 N
5 mm	100%	1.42 kg / 3.13 pounds 1420.0 g / 13.9 N
10 mm	100%	1.42 kg / 3.13 pounds 1420.0 g / 13.9 N
11 mm	100%	1.42 kg / 3.13 pounds 1420.0 g / 13.9 N
12 mm	100%	1.42 kg / 3.13 pounds 1420.0 g / 13.9 N

A thin sheet is unable to take in the full magnetic flux, which wastes potential of the holder. Should you mount a strong magnet to a thin surface, the flux will pass right through and the attraction force will be weaker. To achieve full efficiency of this neodymium's potential, you require a sufficiently solid backing of metal. The saturation phenomenon means that on delicate walls (e.g., appliance housings), the magnet shows lower pull force. We recommend selecting the steel thickness from these parameters.

Table 5: Thermal stability (stability) - thermal limit
MW 12.5x2 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	1.42 kg / 3.13 pounds 1420.0 g / 13.9 N	OK
40 °C	-2.2%	1.39 kg / 3.06 pounds 1388.8 g / 13.6 N	OK
60 °C	-4.4%	1.36 kg / 2.99 pounds 1357.5 g / 13.3 N
80 °C	-6.6%	1.33 kg / 2.92 pounds 1326.3 g / 13.0 N
100 °C	-28.8%	1.01 kg / 2.23 pounds 1011.0 g / 9.9 N

Standard neodymium magnets change their properties parameters past the thermal threshold. Protect against heat – heat can permanently destroy this product. As the temperature rises, the magnet's power temporarily decreases. Do not use this product close to ovens higher than its working range. Too high temperature will lead to irreversible degradation of magnetism.

*Engineering note: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low permeance coefficient) are more susceptible to demagnetization at lower temperatures than taller cylinders. Warning indicator in the table indicates permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 12.5x2 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.70 kg / 5.95 pounds 3 338 Gs	0.40 kg / 0.89 pounds 405 g / 4.0 N	N/A
1 mm	2.47 kg / 5.45 pounds 3 616 Gs	0.37 kg / 0.82 pounds 371 g / 3.6 N	2.23 kg / 4.91 pounds ~0 Gs
2 mm	2.20 kg / 4.84 pounds 3 407 Gs	0.33 kg / 0.73 pounds 329 g / 3.2 N	1.98 kg / 4.36 pounds ~0 Gs
3 mm	1.89 kg / 4.18 pounds 3 165 Gs	0.28 kg / 0.63 pounds 284 g / 2.8 N	1.71 kg / 3.76 pounds ~0 Gs
5 mm	1.32 kg / 2.91 pounds 2 640 Gs	0.20 kg / 0.44 pounds 198 g / 1.9 N	1.19 kg / 2.62 pounds ~0 Gs
10 mm	0.43 kg / 0.94 pounds 1 503 Gs	0.06 kg / 0.14 pounds 64 g / 0.6 N	0.38 kg / 0.85 pounds ~0 Gs
20 mm	0.04 kg / 0.10 pounds 483 Gs	0.01 kg / 0.01 pounds 7 g / 0.1 N	0.04 kg / 0.09 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 51 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 31 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 20 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 14 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 10 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 7 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two strong neodymiums attract each other from a significantly greater distance than a magnet and sheet combination. The connection of two magnets produces a massive flux and a further horizon of action. Want to build a strong closure? Apply two magnets instead of a neodymium and a striker plate. Remember that when bringing together two magnets, the pinch force is massive. The levitation is a bit weaker than the connection force, but still impressive.
*Flux density for N-N configuration is approximately ~0 Gs in the exact middle between the magnets (due to field cancellation).
Note: Calculations refer to sliding force of dual identical magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (implants) - precautionary measures
MW 12.5x2 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	4.5 cm
Hearing aid	10 Gs (1.0 mT)	3.5 cm
Mechanical watch	20 Gs (2.0 mT)	3.0 cm
Mobile device	40 Gs (4.0 mT)	2.5 cm
Remote	50 Gs (5.0 mT)	2.0 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 serious hazard to IT equipment as well as medical implants. These NdFeB products generate a field that destroys function of digital equipment. Remember: the invisible magnetic field passes through tissues and plastic. Increased vigilance must be exercised by people with cochlear implants and insulin pumps. Also at risk are: mechanical watches, remotes, membranes, and screens. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MW 12.5x2 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	28.30 km/h (7.86 m/s)	0.06 J
30 mm	48.53 km/h (13.48 m/s)	0.17 J
50 mm	62.65 km/h (17.40 m/s)	0.28 J
100 mm	88.60 km/h (24.61 m/s)	0.56 J

Magnetic elements are prone to chipping – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely turns into a projectile. Striking energy can trigger coating fragments or injury to fingers. Hold the magnet firmly during mounting so it doesn't hit with great force against the metal. A collision at high speed means shattering of the magnet. Wear safety glasses when working with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 12.5x2 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (P_c)
MW 12.5x2 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	2 810 Mx	28.1 µWb
P_c Coefficient	0.24	Low (Flat)

Total magnetic flux passing through the magnet pole. Essential parameter for generator designers and motors. P_c value defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 12.5x2 / N38

Environment	Effective steel pull	Effect
Air (land)	1.42 kg	Standard
Water (riverbed)	1.63 kg (+0.21 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. However, remember the water resistance when pulling the rope quickly.

1. Shear force

*Note: On a vertical wall, the magnet holds only ~20% of its nominal pull.

2. Plate thickness effect

*Thin metal sheet (e.g. computer case) significantly weakens the holding force.

3. Heat tolerance

*For N38 grade, the max working temp is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.24

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

Elemental analysis

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

Sustainability

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: 010014-2026

Quick Unit Converter

Force (pull)

Force in kg

Force (N)

Pounds (lbs)

Magnetic Field

Gauss (Gs)

Simply fill in one field, to let the tool calculate the rest instantly.

MP 20x5x5 / N38 - ring magnet

2.76 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

HH 36x7.5 [M6] / N38 - through hole magnetic holder

38.90 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MPL 10x7x3 / N38 - lamellar magnet

0.849 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 15x10 / N38 - cylindrical magnet

4.51 ZŁ brutto / pcs

This product is an extremely powerful cylinder magnet, composed of durable NdFeB material, which, with dimensions of Ø12.5x2 mm, guarantees the highest energy density. The MW 12.5x2 / N38 model is characterized by an accuracy of ±0.1mm and industrial build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 1.42 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring rapid order fulfillment. Furthermore, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

This model is ideal for building generators, advanced sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the high power of 13.89 N with a weight of only 1.84 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.

Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure stability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.

Magnets NdFeB grade N38 are suitable for the majority of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø12.5x2), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.

This model is characterized by dimensions Ø12.5x2 mm, which, at a weight of 1.84 g, makes it an element with high magnetic energy density. The key parameter here is the holding force amounting to approximately 1.42 kg (force ~13.89 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.

Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 12.5 mm. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized diametrically if your project requires it.

Strengths and weaknesses of rare earth magnets.

Advantages

Apart from their superior magnetic energy, neodymium magnets have these key benefits:

They do not lose power, even after nearly 10 years – the drop in power is only ~1% (according to tests),
Magnets effectively defend themselves against demagnetization caused by foreign field sources,
The use of an elegant layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
Magnets are characterized by exceptionally strong magnetic induction on the outer side,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
Thanks to modularity in constructing and the ability to adapt to complex applications,
Universal use in modern industrial fields – they find application in hard drives, electromotive mechanisms, advanced medical instruments, as well as other advanced devices.
Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Cons

Disadvantages of neodymium magnets:

They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (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 very resistant to heat
They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
We suggest cover - magnetic holder, due to difficulties in creating threads inside the magnet and complicated forms.
Possible danger to health – tiny shards of magnets pose a threat, in case of ingestion, which gains importance in the context of child health protection. Additionally, small elements of these magnets can be problematic in diagnostics medical after entering the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Pull force analysis

Highest magnetic holding force – what it depends on?

Magnet power was determined for the most favorable conditions, including:

using a sheet made of high-permeability steel, functioning as a circuit closing element
whose thickness reaches at least 10 mm
characterized by lack of roughness
with direct contact (without impurities)
for force applied at a right angle (pull-off, not shear)
at standard ambient temperature

Practical aspects of lifting capacity – factors

Real force impacted by working environment parameters, such as (from priority):

Gap (between the magnet and the plate), as even a very small distance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, rust or dirt).
Load vector – highest force is obtained only during perpendicular pulling. The force required to slide of the magnet along the surface is standardly many times smaller (approx. 1/5 of the lifting capacity).
Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
Metal type – not every steel reacts the same. Alloy additives weaken the attraction effect.
Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Thermal environment – heating the magnet results in weakening of induction. Check the thermal limit for a given model.

Lifting capacity was assessed using a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, in contrast under shearing force the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet and the plate lowers the holding force.

Warnings

Warning for heart patients

Patients with a ICD must keep an safe separation from magnets. The magnetism can disrupt the functioning of the life-saving device.

Warning for allergy sufferers

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If redness happens, cease handling magnets and use protective gear.

Choking Hazard

Strictly store magnets out of reach of children. Risk of swallowing is high, and the consequences of magnets clamping inside the body are tragic.

Electronic devices

Data protection: Strong magnets can ruin data carriers and delicate electronics (pacemakers, hearing aids, timepieces).

Bone fractures

Mind your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Be careful!

Magnet fragility

Watch out for shards. Magnets can explode upon violent connection, ejecting shards into the air. Eye protection is mandatory.

Do not overheat magnets

Control the heat. Heating the magnet above 80 degrees Celsius will ruin its properties and strength.

Mechanical processing

Drilling and cutting of NdFeB material carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Phone sensors

Navigation devices and smartphones are extremely sensitive to magnetic fields. Direct contact with a strong magnet can ruin the internal compass in your phone.

Caution required

Before use, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.

Warning! Details about hazards in the article: Magnet Safety Guide.

MW 12.5x2 / N38 - cylindrical magnet

Product card - MW 12.5x2 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the magnet - technical parameters

Table 1: Static pull force (pull vs gap) - characteristics MW 12.5x2 / N38

Table 2: Shear force (wall) MW 12.5x2 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MW 12.5x2 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MW 12.5x2 / N38

Table 5: Thermal stability (stability) - thermal limit MW 12.5x2 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision MW 12.5x2 / N38

Table 7: Hazards (implants) - precautionary measures MW 12.5x2 / N38

Table 8: Impact energy (kinetic energy) - warning MW 12.5x2 / N38

Table 9: Anti-corrosion coating durability MW 12.5x2 / N38

Table 10: Construction data (Pc) MW 12.5x2 / N38

Table 11: Underwater work (magnet fishing) MW 12.5x2 / N38

1. Shear force

2. Plate thickness effect

3. Heat tolerance

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

Elemental analysis

Sustainability

Force (pull)

Magnetic Field

See also proposals

MP 20x5x5 / N38 - ring magnet

HH 36x7.5 [M6] / N38 - through hole magnetic holder

MPL 10x7x3 / N38 - lamellar magnet

MW 15x10 / N38 - cylindrical magnet

Strengths and weaknesses of rare earth magnets.

Advantages

Cons

Pull force analysis

Highest magnetic holding force – what it depends on?

Practical aspects of lifting capacity – factors

Warnings

Warning for heart patients

Warning for allergy sufferers

Choking Hazard

Electronic devices

Bone fractures

Magnet fragility

Do not overheat magnets

Mechanical processing

Phone sensors

Caution required

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - characteristics
MW 12.5x2 / N38

Table 2: Shear force (wall)
MW 12.5x2 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 12.5x2 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 12.5x2 / N38

Table 5: Thermal stability (stability) - thermal limit
MW 12.5x2 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 12.5x2 / N38

Table 7: Hazards (implants) - precautionary measures
MW 12.5x2 / N38

Table 8: Impact energy (kinetic energy) - warning
MW 12.5x2 / N38

Table 9: Anti-corrosion coating durability
MW 12.5x2 / N38

Table 10: Construction data (P_c)
MW 12.5x2 / N38

Table 11: Underwater work (magnet fishing)
MW 12.5x2 / N38