Product available Ships in 3 days

MW 9x3 / N38 - cylindrical magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN
Rating: 5

cylindrical magnet

Catalog no 010108

GTIN/EAN: 5906301811077

5.00

Diameter Ø

9 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

1.43 g

Magnetization Direction

↑ axial

Load capacity

1.94 kg / 18.99 N

Magnetic Induction

343.55 mT / 3436 Gs

Coating

[NiCuNi] Nickel

see properties »

1.132 ZŁ with VAT / pcs + price for transport

0.920 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

0.920 ZŁ

1.132 ZŁ

price from 700 pcs

0.865 ZŁ

1.064 ZŁ

price from 2800 pcs

0.810 ZŁ

0.996 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Need advice?

Contact us by phone +48 888 99 98 98 alternatively drop us a message through request form the contact form page.
Parameters and appearance of a neodymium magnet can be tested using our our magnetic calculator.

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

Physical properties - MW 9x3 / N38 - cylindrical magnet

Specification / characteristics - MW 9x3 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010108
GTIN/EAN	5906301811077
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	9 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	1.43 g
Magnetization Direction	↑ axial
Load capacity ~ ?	1.94 kg / 18.99 N
Magnetic Induction ~ ?	343.55 mT / 3436 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 9x3 / 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

Physical modeling of the magnet - report

These data constitute the outcome of a physical simulation. Results rely on models for the material Nd₂Fe₁₄B. Real-world performance might slightly deviate from the simulation results. Use these data as a reference point during assembly planning.

Table 1: Static pull force (force vs gap) - interaction chart
MW 9x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3433 Gs 343.3 mT	1.94 kg / 4.28 LBS 1940.0 g / 19.0 N	safe
1 mm	2774 Gs 277.4 mT	1.27 kg / 2.79 LBS 1266.5 g / 12.4 N	safe
2 mm	2090 Gs 209.0 mT	0.72 kg / 1.59 LBS 719.2 g / 7.1 N	safe
3 mm	1521 Gs 152.1 mT	0.38 kg / 0.84 LBS 380.7 g / 3.7 N	safe
5 mm	795 Gs 79.5 mT	0.10 kg / 0.23 LBS 104.1 g / 1.0 N	safe
10 mm	205 Gs 20.5 mT	0.01 kg / 0.02 LBS 6.9 g / 0.1 N	safe
15 mm	76 Gs 7.6 mT	0.00 kg / 0.00 LBS 1.0 g / 0.0 N	safe
20 mm	36 Gs 3.6 mT	0.00 kg / 0.00 LBS 0.2 g / 0.0 N	safe
30 mm	12 Gs 1.2 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe
50 mm	3 Gs 0.3 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe

Grip strength drops drastically per each millimeter of distance. Remember that every additional insulation layer (e.g., dirt, varnish, veneer) strongly reduces the pull force. Magnets work optimally at the point of direct contact; air break weakens the force. Analyze how quickly the parameters fall, when the magnet does not touch tightly to the metal substrate. When designing the arrangement, eliminate additional spacers.

Table 2: Slippage capacity (vertical surface)
MW 9x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.39 kg / 0.86 LBS 388.0 g / 3.8 N
1 mm	Stal (~0.2)	0.25 kg / 0.56 LBS 254.0 g / 2.5 N
2 mm	Stal (~0.2)	0.14 kg / 0.32 LBS 144.0 g / 1.4 N
3 mm	Stal (~0.2)	0.08 kg / 0.17 LBS 76.0 g / 0.7 N
5 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 20.0 g / 0.2 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 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

This section defines the theoretical holding capacity needed to cause the shifting of the magnet down along a upright steel plate (considering typical friction). This parameter is relative to the distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 9x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.58 kg / 1.28 LBS 582.0 g / 5.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.39 kg / 0.86 LBS 388.0 g / 3.8 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.19 kg / 0.43 LBS 194.0 g / 1.9 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.97 kg / 2.14 LBS 970.0 g / 9.5 N

When mounting a magnet on a vertical plane (e.g., a board), it you can count on just about 20%-30% of nominal attraction strength. Gravitational force and a low friction coefficient influence the fact that magnets slide down easier than they detach. Designing a hanger? Consider that the sliding force is noticeably lower than the maximum static pull force. On a smooth steel, the holder will give way down under a much lighter cargo. Application of an anti-slip layer can significantly raise the stability.

Table 4: Material efficiency (saturation) - power losses
MW 9x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.19 kg / 0.43 LBS 194.0 g / 1.9 N
1 mm	25%	0.49 kg / 1.07 LBS 485.0 g / 4.8 N
2 mm	50%	0.97 kg / 2.14 LBS 970.0 g / 9.5 N
3 mm	75%	1.46 kg / 3.21 LBS 1455.0 g / 14.3 N
5 mm	100%	1.94 kg / 4.28 LBS 1940.0 g / 19.0 N
10 mm	100%	1.94 kg / 4.28 LBS 1940.0 g / 19.0 N
11 mm	100%	1.94 kg / 4.28 LBS 1940.0 g / 19.0 N
12 mm	100%	1.94 kg / 4.28 LBS 1940.0 g / 19.0 N

A too thin steel is not enough to focus the full magnetic flux, which weakens actual performance of the holder. If you attach a powerful product to a weak sheet, the flux will penetrate right through and the attraction force will be weaker. To utilize the maximum of this magnet's potential, you need a suitably thick element of metal. The material oversaturation means that on sheet metal structures (e.g., appliance housings), the holder works worse. We recommend selecting the steel cross-section according to the table below.

Table 5: Working in heat (material behavior) - power drop
MW 9x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	1.94 kg / 4.28 LBS 1940.0 g / 19.0 N	OK
40 °C	-2.2%	1.90 kg / 4.18 LBS 1897.3 g / 18.6 N	OK
60 °C	-4.4%	1.85 kg / 4.09 LBS 1854.6 g / 18.2 N
80 °C	-6.6%	1.81 kg / 3.99 LBS 1812.0 g / 17.8 N
100 °C	-28.8%	1.38 kg / 3.05 LBS 1381.3 g / 13.6 N

Ordinary NdFeB products change their properties power after exceeding the maximum temperature. Avoid high temperatures – high temperature can irreversibly damage this magnet. As the temperature rises, the neodymium's power briefly decreases. Refrain from using this product near heat sources exceeding its operating temperature limit. Too high temperature will result in irreversible degradation of magnetism.

*Engineering note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (pancake types) are more susceptible to demagnetization sooner compared to rod magnets. Red status in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - field range
MW 9x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	4.62 kg / 10.19 LBS 4 949 Gs	0.69 kg / 1.53 LBS 693 g / 6.8 N	N/A
1 mm	3.82 kg / 8.43 LBS 6 244 Gs	0.57 kg / 1.26 LBS 573 g / 5.6 N	3.44 kg / 7.58 LBS ~0 Gs
2 mm	3.02 kg / 6.65 LBS 5 548 Gs	0.45 kg / 1.00 LBS 453 g / 4.4 N	2.72 kg / 5.99 LBS ~0 Gs
3 mm	2.30 kg / 5.08 LBS 4 847 Gs	0.35 kg / 0.76 LBS 346 g / 3.4 N	2.07 kg / 4.57 LBS ~0 Gs
5 mm	1.25 kg / 2.76 LBS 3 575 Gs	0.19 kg / 0.41 LBS 188 g / 1.8 N	1.13 kg / 2.49 LBS ~0 Gs
10 mm	0.25 kg / 0.55 LBS 1 591 Gs	0.04 kg / 0.08 LBS 37 g / 0.4 N	0.22 kg / 0.49 LBS ~0 Gs
20 mm	0.02 kg / 0.04 LBS 410 Gs	0.00 kg / 0.01 LBS 2 g / 0.0 N	0.01 kg / 0.03 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 39 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 23 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 15 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 10 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 7 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 5 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 significantly greater distance than a neodymium and metal combination. The setup of two magnets creates a more powerful interaction and a further horizon of performance. Want to build a solid fastener? Utilize two neodymiums instead of a neodymium and a striker plate. Remember that when bringing together two magnets, the collision energy is extreme. The repulsion force is marginally weaker than the attraction, but still large.
*The magnetic induction for N-N configuration is approximately ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
* Estimates demonstrate friction force of dual identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (implants) - precautionary measures
MW 9x3 / 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)	2.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	2.0 cm
Car key	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 large risk to IT equipment as well as pacemakers. These NdFeB products generate a flux that prevents correct functioning of sensitive medical devices. Be aware: the unseen radiation passes through tissues and glass. Special caution must be taken by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, car keys, speakers, and screens. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - collision effects
MW 9x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	37.23 km/h (10.34 m/s)	0.08 J
30 mm	64.34 km/h (17.87 m/s)	0.23 J
50 mm	83.06 km/h (23.07 m/s)	0.38 J
100 mm	117.47 km/h (32.63 m/s)	0.76 J

Magnetic elements are very brittle – a violent impact against metal risks their cracking. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Impact energy can trigger coating fragments or injury to skin. Always hold the magnet during bringing near metal so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Coating parameters (durability)
MW 9x3 / 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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MW 9x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	2 314 Mx	23.1 µWb
P_c Coefficient	0.44	Low (Flat)

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

Table 11: Hydrostatics and buoyancy
MW 9x3 / N38

Environment	Effective steel pull	Effect
Air (land)	1.94 kg	Standard
Water (riverbed)	2.22 kg (+0.28 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.

The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Wall mount (shear)

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

2. Efficiency vs thickness

*Thin steel (e.g. 0.5mm PC case) severely reduces the holding force.

3. Thermal stability

*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) = 0.44

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

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: 010108-2026

Measurement Calculator

Pulling force

Force (N)

Force in lbs

Magnetic Induction

Gauss (Gs)

Induction (T)

Input a figure in just one slot to see the conversion in all other units at once.

Other proposals

Product available Ships in 3 days

MW 25x2.5 / N38 - cylindrical magnet

3.95 ZŁ brutto / pcs

Product available Ships in 3 days

MW 8x20 / N38 - cylindrical magnet

4.60 ZŁ brutto / pcs

Product available Ships in 3 days

MW 45x20 / N38 - cylindrical magnet

84.45 ZŁ brutto / pcs

Product available Ships in 3 days

SM 25x250 [2xM8] / N52 - magnetic separator

762.60 ZŁ brutto / pcs

The presented product is a very strong rod magnet, composed of modern NdFeB material, which, at dimensions of Ø9x3 mm, guarantees the highest energy density. This specific item features an accuracy of ±0.1mm and professional build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 1.94 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Moreover, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is perfect for building electric motors, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 18.99 N with a weight of only 1.43 g, this rod is indispensable in miniature devices and wherever every gram matters.

Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure long-term durability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Magnets NdFeB grade N38 are strong enough for the majority of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø9x3), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

This model is characterized by dimensions Ø9x3 mm, which, at a weight of 1.43 g, makes it an element with high magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 1.94 kg (force ~18.99 N), which, with such compact 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 9 mm. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized diametrically if your project requires it.

Pros and cons of neodymium magnets.

Strengths

Apart from their strong holding force, neodymium magnets have these key benefits:

They have stable power, and over nearly 10 years their performance decreases symbolically – ~1% (according to theory),
They maintain their magnetic properties even under external field action,
By covering with a lustrous layer of gold, the element presents an professional look,
Magnetic induction on the surface of the magnet is strong,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
Thanks to flexibility in constructing and the ability to modify to individual projects,
Fundamental importance in high-tech industry – they serve a role in magnetic memories, drive modules, precision medical tools, and industrial machines.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which makes them useful in compact constructions

Weaknesses

Disadvantages of neodymium magnets:

Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a special holder, which not only protects them against impacts but also increases their durability
NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening 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 very resistant to heat
They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
We suggest casing - magnetic holder, due to difficulties in producing nuts inside the magnet and complicated forms.
Health risk related to microscopic parts of magnets pose a threat, in case of ingestion, which gains importance in the context of child health protection. Furthermore, small components of these magnets can complicate diagnosis medical in case of swallowing.
Due to expensive raw materials, their price is relatively high,

Holding force characteristics

Maximum magnetic pulling force – what it depends on?

The lifting capacity listed is a theoretical maximum value performed under standard conditions:

using a plate made of low-carbon steel, functioning as a circuit closing element
with a thickness minimum 10 mm
with a surface free of scratches
under conditions of gap-free contact (surface-to-surface)
for force acting at a right angle (in the magnet axis)
at room temperature

Determinants of practical lifting force of a magnet

During everyday use, the real power is determined by a number of factors, presented from crucial:

Space between magnet and steel – every millimeter of separation (caused e.g. by veneer or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
Material type – the best choice is pure iron steel. Cast iron may attract less.
Smoothness – ideal contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Temperature influence – high temperature reduces pulling force. Too high temperature can permanently damage the magnet.

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under a perpendicular pulling force, whereas under shearing force the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

Safe handling of neodymium magnets

Cards and drives

Device Safety: Neodymium magnets can damage payment cards and delicate electronics (heart implants, medical aids, timepieces).

Warning for allergy sufferers

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If skin irritation happens, cease working with magnets and wear gloves.

Immense force

Be careful. Rare earth magnets attract from a long distance and connect with massive power, often quicker than you can move away.

Fragile material

Watch out for shards. Magnets can fracture upon violent connection, ejecting sharp fragments into the air. Wear goggles.

Pinching danger

Risk of injury: The attraction force is so immense that it can cause blood blisters, pinching, and even bone fractures. Use thick gloves.

Warning for heart patients

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

Maximum temperature

Monitor thermal conditions. Heating the magnet to high heat will destroy its properties and strength.

Swallowing risk

Only for adults. Small elements can be swallowed, leading to intestinal necrosis. Keep out of reach of kids and pets.

GPS and phone interference

Navigation devices and smartphones are highly susceptible to magnetic fields. Direct contact with a strong magnet can decalibrate the internal compass in your phone.

Do not drill into magnets

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

Attention! Want to know more? Read our article: Are neodymium magnets dangerous?

MW 9x3 / N38 - cylindrical magnet

Physical properties - MW 9x3 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the magnet - report

Table 1: Static pull force (force vs gap) - interaction chart MW 9x3 / N38

Table 2: Slippage capacity (vertical surface) MW 9x3 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MW 9x3 / N38

Table 4: Material efficiency (saturation) - power losses MW 9x3 / N38

Table 5: Working in heat (material behavior) - power drop MW 9x3 / N38

Table 6: Two magnets (repulsion) - field range MW 9x3 / N38

Table 7: Hazards (implants) - precautionary measures MW 9x3 / N38

Table 8: Collisions (kinetic energy) - collision effects MW 9x3 / N38

Table 9: Coating parameters (durability) MW 9x3 / N38

Table 10: Construction data (Flux) MW 9x3 / N38

Table 11: Hydrostatics and buoyancy MW 9x3 / N38

1. Wall mount (shear)

2. Efficiency vs thickness

3. Thermal stability

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

Elemental analysis

Sustainability

Pulling force

Magnetic Induction

Other proposals

MW 25x2.5 / N38 - cylindrical magnet

MW 8x20 / N38 - cylindrical magnet

MW 45x20 / N38 - cylindrical magnet

SM 25x250 [2xM8] / N52 - magnetic separator

Pros and cons of neodymium magnets.

Strengths

Weaknesses

Holding force characteristics

Maximum magnetic pulling force – what it depends on?

Determinants of practical lifting force of a magnet

Safe handling of neodymium magnets

Cards and drives

Warning for allergy sufferers

Immense force

Fragile material

Pinching danger

Warning for heart patients

Maximum temperature

Swallowing risk

GPS and phone interference

Do not drill into magnets

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - interaction chart
MW 9x3 / N38

Table 2: Slippage capacity (vertical surface)
MW 9x3 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 9x3 / N38

Table 4: Material efficiency (saturation) - power losses
MW 9x3 / N38

Table 5: Working in heat (material behavior) - power drop
MW 9x3 / N38

Table 6: Two magnets (repulsion) - field range
MW 9x3 / N38

Table 7: Hazards (implants) - precautionary measures
MW 9x3 / N38

Table 8: Collisions (kinetic energy) - collision effects
MW 9x3 / N38

Table 9: Coating parameters (durability)
MW 9x3 / N38

Table 10: Construction data (Flux)
MW 9x3 / N38

Table 11: Hydrostatics and buoyancy
MW 9x3 / N38