Product available Ships today (order by 14:00)

MW 30x5 / 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 010056

GTIN/EAN: 5906301810551

5.00

Diameter Ø

30 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

26.51 g

Magnetization Direction

↑ axial

Load capacity

8.71 kg / 85.42 N

Magnetic Induction

196.02 mT / 1960 Gs

Coating

[NiCuNi] Nickel

check parameters »

8.35 ZŁ with VAT / pcs + price for transport

6.79 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

6.79 ZŁ

8.35 ZŁ

price from 100 pcs

6.38 ZŁ

7.85 ZŁ

price from 400 pcs

5.98 ZŁ

7.35 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Can't decide what to choose?

Pick up the phone and ask +48 22 499 98 98 or send us a note via request form through our site.
Force as well as shape of a magnet can be estimated on our force calculator.

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

Technical details - MW 30x5 / N38 - cylindrical magnet

Specification / characteristics - MW 30x5 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010056
GTIN/EAN	5906301810551
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	30 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	26.51 g
Magnetization Direction	↑ axial
Load capacity ~ ?	8.71 kg / 85.42 N
Magnetic Induction ~ ?	196.02 mT / 1960 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 30x5 / 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 simulation of the magnet - data

Presented information are the result of a mathematical analysis. Values are based on algorithms for the class Nd₂Fe₁₄B. Actual parameters may deviate from the simulation results. Use these data as a supplementary guide for designers.

Table 1: Static force (pull vs distance) - characteristics
MW 30x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1960 Gs 196.0 mT	8.71 kg / 19.20 LBS 8710.0 g / 85.4 N	strong
1 mm	1890 Gs 189.0 mT	8.10 kg / 17.86 LBS 8100.7 g / 79.5 N	strong
2 mm	1802 Gs 180.2 mT	7.37 kg / 16.24 LBS 7366.2 g / 72.3 N	strong
3 mm	1702 Gs 170.2 mT	6.57 kg / 14.47 LBS 6565.7 g / 64.4 N	strong
5 mm	1479 Gs 147.9 mT	4.96 kg / 10.93 LBS 4956.4 g / 48.6 N	strong
10 mm	945 Gs 94.5 mT	2.02 kg / 4.46 LBS 2024.4 g / 19.9 N	strong
15 mm	576 Gs 57.6 mT	0.75 kg / 1.66 LBS 752.1 g / 7.4 N	low risk
20 mm	356 Gs 35.6 mT	0.29 kg / 0.64 LBS 288.1 g / 2.8 N	low risk
30 mm	153 Gs 15.3 mT	0.05 kg / 0.12 LBS 53.2 g / 0.5 N	low risk
50 mm	43 Gs 4.3 mT	0.00 kg / 0.01 LBS 4.2 g / 0.0 N	low risk

Grip strength drops sharply with every mm of gap. Note that even the smallest gap (e.g., dirt, paint, veneer) significantly weakens the grip. Magnets hold most effectively in perfect adhesion; distance nullifies the force. Notice how rapidly the pull force fall, when the magnet does not touch tightly to the metal substrate. When designing the mounting, avoid unnecessary gaps.

Table 2: Vertical capacity (wall)
MW 30x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.74 kg / 3.84 LBS 1742.0 g / 17.1 N
1 mm	Stal (~0.2)	1.62 kg / 3.57 LBS 1620.0 g / 15.9 N
2 mm	Stal (~0.2)	1.47 kg / 3.25 LBS 1474.0 g / 14.5 N
3 mm	Stal (~0.2)	1.31 kg / 2.90 LBS 1314.0 g / 12.9 N
5 mm	Stal (~0.2)	0.99 kg / 2.19 LBS 992.0 g / 9.7 N
10 mm	Stal (~0.2)	0.40 kg / 0.89 LBS 404.0 g / 4.0 N
15 mm	Stal (~0.2)	0.15 kg / 0.33 LBS 150.0 g / 1.5 N
20 mm	Stal (~0.2)	0.06 kg / 0.13 LBS 58.0 g / 0.6 N
30 mm	Stal (~0.2)	0.01 kg / 0.02 LBS 10.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

This section shows the theoretical force sufficient to start the sliding of the magnet vertically on a upright metal surface (assuming standard friction coefficient). This value is a function of the separation distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MW 30x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.61 kg / 5.76 LBS 2613.0 g / 25.6 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.74 kg / 3.84 LBS 1742.0 g / 17.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.87 kg / 1.92 LBS 871.0 g / 8.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	4.36 kg / 9.60 LBS 4355.0 g / 42.7 N

When mounting a holder on a upright plane (e.g., a fridge), it you can count on only approx. 20%-30% of its maximum pull force. Gravity and a weak degree of grip influence the fact that magnets slip easier than they pop off the substrate. Want to create a vertical fastening? Consider that the sliding force is significantly lower than the perpendicular breakaway force. On a painted metal, the magnet will slide down under a much lighter weight. Application of an anti-slip layer can significantly improve the result.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 30x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.87 kg / 1.92 LBS 871.0 g / 8.5 N
1 mm	25%	2.18 kg / 4.80 LBS 2177.5 g / 21.4 N
2 mm	50%	4.36 kg / 9.60 LBS 4355.0 g / 42.7 N
3 mm	75%	6.53 kg / 14.40 LBS 6532.5 g / 64.1 N
5 mm	100%	8.71 kg / 19.20 LBS 8710.0 g / 85.4 N
10 mm	100%	8.71 kg / 19.20 LBS 8710.0 g / 85.4 N
11 mm	100%	8.71 kg / 19.20 LBS 8710.0 g / 85.4 N
12 mm	100%	8.71 kg / 19.20 LBS 8710.0 g / 85.4 N

A thin metal plate cannot focus the entire magnetic field, which wastes potential of the magnet. Should you mount a strong magnet to a thin surface, the field will pass right through and the attraction force will be weaker. To utilize 100% of this neodymium's potential, you require a sufficiently solid backing of steel. The material oversaturation causes that on thin elements (e.g., car bodies), the holder holds weaker. We suggest choosing the steel dimension based on the following data.

Table 5: Thermal stability (material behavior) - thermal limit
MW 30x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	8.71 kg / 19.20 LBS 8710.0 g / 85.4 N	OK
40 °C	-2.2%	8.52 kg / 18.78 LBS 8518.4 g / 83.6 N	OK
60 °C	-4.4%	8.33 kg / 18.36 LBS 8326.8 g / 81.7 N
80 °C	-6.6%	8.14 kg / 17.93 LBS 8135.1 g / 79.8 N
100 °C	-28.8%	6.20 kg / 13.67 LBS 6201.5 g / 60.8 N

Ordinary NdFeB products change their properties power after exceeding the maximum temperature. Protect against heat – heat can irreversibly damage this magnet. As the temperature rises, the neodymium's power momentarily lowers. Refrain from using this magnet near heat sources exceeding its safe range. Too high temperature will result in permanent loss of magnetism.

*Important note: Thermal stability depends not only on the material grade, as well as the dimension ratios. 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 particular item.

Table 6: Two magnets (attraction) - field range
MW 30x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	16.74 kg / 36.91 LBS 3 437 Gs	2.51 kg / 5.54 LBS 2511 g / 24.6 N	N/A
1 mm	16.20 kg / 35.71 LBS 3 856 Gs	2.43 kg / 5.36 LBS 2429 g / 23.8 N	14.58 kg / 32.14 LBS ~0 Gs
2 mm	15.57 kg / 34.33 LBS 3 780 Gs	2.34 kg / 5.15 LBS 2335 g / 22.9 N	14.01 kg / 30.89 LBS ~0 Gs
3 mm	14.89 kg / 32.82 LBS 3 696 Gs	2.23 kg / 4.92 LBS 2233 g / 21.9 N	13.40 kg / 29.54 LBS ~0 Gs
5 mm	13.40 kg / 29.54 LBS 3 507 Gs	2.01 kg / 4.43 LBS 2010 g / 19.7 N	12.06 kg / 26.58 LBS ~0 Gs
10 mm	9.53 kg / 21.00 LBS 2 957 Gs	1.43 kg / 3.15 LBS 1429 g / 14.0 N	8.57 kg / 18.90 LBS ~0 Gs
20 mm	3.89 kg / 8.58 LBS 1 890 Gs	0.58 kg / 1.29 LBS 584 g / 5.7 N	3.50 kg / 7.72 LBS ~0 Gs
50 mm	0.23 kg / 0.50 LBS 458 Gs	0.03 kg / 0.08 LBS 34 g / 0.3 N	0.21 kg / 0.45 LBS ~0 Gs
60 mm	0.10 kg / 0.23 LBS 307 Gs	0.02 kg / 0.03 LBS 15 g / 0.2 N	0.09 kg / 0.20 LBS ~0 Gs
70 mm	0.05 kg / 0.11 LBS 213 Gs	0.01 kg / 0.02 LBS 7 g / 0.1 N	0.04 kg / 0.10 LBS ~0 Gs
80 mm	0.03 kg / 0.06 LBS 153 Gs	0.00 kg / 0.01 LBS 4 g / 0.0 N	0.02 kg / 0.05 LBS ~0 Gs
90 mm	0.01 kg / 0.03 LBS 113 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.03 LBS ~0 Gs
100 mm	0.01 kg / 0.02 LBS 86 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnetic products interact from a wider radius than a magnet and steel setup. Such a system of two magnets produces a massive flux and a wider radius of action. Want to build a strong closure? Utilize two neodymiums instead of a neodymium and a striker plate. Exercise caution that when attracting two neodymiums, the collision energy is massive. The repulsion force is marginally weaker than the attraction, but still large.
*The magnetic induction for N-N configuration reaches ~0 Gs at the midpoint of the gap (due to field cancellation).
Attention: Calculations apply to shear force of a pair of matching magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - precautionary measures
MW 30x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	11.0 cm
Hearing aid	10 Gs (1.0 mT)	8.5 cm
Timepiece	20 Gs (2.0 mT)	7.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	5.5 cm
Remote	50 Gs (5.0 mT)	5.0 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

Extremely neodym field poses a real danger to electronic devices as well as medical implants. These NdFeB products generate a field that prevents correct functioning of sensitive medical devices. Notice: the unseen radiation penetrates the body and housings. Special caution must be exercised by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, car keys, speakers, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MW 30x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	20.77 km/h (5.77 m/s)	0.44 J
30 mm	31.78 km/h (8.83 m/s)	1.03 J
50 mm	40.89 km/h (11.36 m/s)	1.71 J
100 mm	57.81 km/h (16.06 m/s)	3.42 J

Neodymium magnets are prone to chipping – a violent impact against metal can result in shattering. Pay attention to connection velocity – a magnet released freely turns into a projectile. Impact energy can destroy the magnet or dangerous crushing to fingers. Hold the magnet firmly during mounting so it doesn't hit with great force against the steel surface. A collision at high speed means shattering of the magnet. Wear safety glasses when playing with large magnets.

Table 9: Coating parameters (durability)
MW 30x5 / 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 (Flux)
MW 30x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	16 658 Mx	166.6 µWb
P_c Coefficient	0.25	Low (Flat)

Flux value passing through the magnet pole. Key data in coil applications and motors. P_c value determines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 30x5 / N38

Environment	Effective steel pull	Effect
Air (land)	8.71 kg	Standard
Water (riverbed)	9.97 kg (+1.26 kg buoyancy gain)	+14.5%

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

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Wall mount (shear)

*Note: On a vertical surface, the magnet holds merely approx. 20-30% of its max power.

2. Steel saturation

*Thin metal sheet (e.g. computer case) severely limits the holding force.

3. Thermal stability

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.25

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: 010056-2026

Measurement Calculator

Magnet pull force

Pounds (lbs)

Magnetic Induction

Induction (T)

Put a figure in just one slot to see the conversion for the other units at once.

View more deals

Product available Ships today (order by 14:00)

MW 15x5 / N38 - cylindrical magnet

3.20 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

AM ucho [M12] - magnetic accessories

9.84 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MPL 50x20x10 / N38 - lamellar magnet

43.05 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MP 25x7.5/4.5x5 / N38 - ring magnet

8.00 ZŁ brutto / pcs

This product is an incredibly powerful cylinder magnet, composed of modern NdFeB material, which, with dimensions of Ø30x5 mm, guarantees optimal power. The MW 30x5 / N38 model is characterized by an accuracy of ±0.1mm and professional build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 8.71 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Furthermore, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is ideal for building generators, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 85.42 N with a weight of only 26.51 g, this rod is indispensable in electronics and wherever low weight is crucial.

Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 30.1 mm) using epoxy glues. To ensure long-term durability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need even stronger magnets in the same volume (Ø30x5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

The presented product is a neodymium magnet with precisely defined parameters: diameter 30 mm and height 5 mm. The key parameter here is the holding force amounting to approximately 8.71 kg (force ~85.42 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 5 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is standard 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 as well as weaknesses of Nd₂Fe₁₄B magnets.

Benefits

Apart from their consistent power, neodymium magnets have these key benefits:

They do not lose strength, even during approximately 10 years – the drop in lifting capacity is only ~1% (according to tests),
They possess excellent resistance to magnetic field loss due to external magnetic sources,
The use of an aesthetic coating of noble metals (nickel, gold, silver) causes the element to present itself better,
Magnetic induction on the surface of the magnet is extremely intense,
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...
Due to the possibility of free forming and adaptation to individualized needs, neodymium magnets can be produced in a variety of forms and dimensions, which increases their versatility,
Wide application in innovative solutions – they are commonly used in data components, motor assemblies, advanced medical instruments, also modern systems.
Thanks to their power density, small magnets offer high operating force, in miniature format,

Disadvantages

Cons of neodymium magnets: weaknesses and usage proposals

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
NdFeB 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
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
Due to limitations in realizing threads and complex forms in magnets, we recommend using cover - magnetic holder.
Possible danger resulting from small fragments of magnets can be dangerous, if swallowed, which gains importance in the context of child safety. Additionally, small components of these devices are able to disrupt the diagnostic process medical when they are in the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Highest magnetic holding force – what contributes to it?

The declared magnet strength represents the limit force, measured under optimal environment, meaning:

on a plate made of structural steel, perfectly concentrating the magnetic field
whose thickness equals approx. 10 mm
characterized by lack of roughness
without the slightest insulating layer between the magnet and steel
under vertical application of breakaway force (90-degree angle)
at room temperature

Key elements affecting lifting force

Holding efficiency impacted by specific conditions, such as (from priority):

Gap (between the magnet and the plate), because even a microscopic distance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to paint, corrosion or debris).
Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
Material composition – different alloys attracts identically. High carbon content weaken the interaction with the magnet.
Surface structure – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
Temperature – temperature increase results in weakening of force. Check the maximum operating temperature for a given model.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the load capacity.

Safety rules for work with NdFeB magnets

Caution required

Exercise caution. Neodymium magnets act from a long distance and snap with huge force, often quicker than you can react.

Adults only

Absolutely keep magnets away from children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are very dangerous.

Demagnetization risk

Do not overheat. NdFeB magnets are sensitive to heat. If you need resistance above 80°C, ask us about special high-temperature series (H, SH, UH).

Bone fractures

Large magnets can smash fingers instantly. Never put your hand between two strong magnets.

Mechanical processing

Dust created during grinding of magnets is flammable. Do not drill into magnets unless you are an expert.

Beware of splinters

Despite metallic appearance, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Safe distance

Equipment safety: Neodymium magnets can ruin data carriers and sensitive devices (heart implants, hearing aids, mechanical watches).

Danger to pacemakers

Health Alert: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.

Allergic reactions

A percentage of the population suffer from a hypersensitivity to Ni, which is the typical protective layer for NdFeB magnets. Frequent touching might lead to an allergic reaction. We strongly advise use protective gloves.

Precision electronics

GPS units and mobile phones are extremely sensitive to magnetism. Direct contact with a strong magnet can permanently damage the internal compass in your phone.

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

MW 30x5 / N38 - cylindrical magnet

Technical details - MW 30x5 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the magnet - data

Table 1: Static force (pull vs distance) - characteristics MW 30x5 / N38

Table 2: Vertical capacity (wall) MW 30x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull MW 30x5 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MW 30x5 / N38

Table 5: Thermal stability (material behavior) - thermal limit MW 30x5 / N38

Table 6: Two magnets (attraction) - field range MW 30x5 / N38

Table 7: Safety (HSE) (implants) - precautionary measures MW 30x5 / N38

Table 8: Impact energy (kinetic energy) - warning MW 30x5 / N38

Table 9: Coating parameters (durability) MW 30x5 / N38

Table 10: Construction data (Flux) MW 30x5 / N38

Table 11: Hydrostatics and buoyancy MW 30x5 / N38

1. Wall mount (shear)

2. Steel saturation

3. Thermal stability

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

Chemical composition

Environmental data

Magnet pull force

Magnetic Induction

View more deals

MW 15x5 / N38 - cylindrical magnet

AM ucho [M12] - magnetic accessories

MPL 50x20x10 / N38 - lamellar magnet

MP 25x7.5/4.5x5 / N38 - ring magnet

Strengths as well as weaknesses of Nd2Fe14B magnets.

Benefits

Disadvantages

Holding force characteristics

Highest magnetic holding force – what contributes to it?

Key elements affecting lifting force

Safety rules for work with NdFeB magnets

Caution required

Adults only

Demagnetization risk

Bone fractures

Mechanical processing

Beware of splinters

Safe distance

Danger to pacemakers

Allergic reactions

Precision electronics

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - characteristics
MW 30x5 / N38

Table 2: Vertical capacity (wall)
MW 30x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MW 30x5 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 30x5 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MW 30x5 / N38

Table 6: Two magnets (attraction) - field range
MW 30x5 / N38

Table 7: Safety (HSE) (implants) - precautionary measures
MW 30x5 / N38

Table 8: Impact energy (kinetic energy) - warning
MW 30x5 / N38

Table 9: Coating parameters (durability)
MW 30x5 / N38

Table 10: Construction data (Flux)
MW 30x5 / N38

Table 11: Hydrostatics and buoyancy
MW 30x5 / N38

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.