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MW 12x4 zestaw 560 szt. / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010564

GTIN/EAN: 5906301815563

Load capacity 3.45 kg / 33.83 N Magnetic Induction 343.64 mT / 3436 Gs
Diameter Ø
12 mm [±0,1 mm]
Height
4 mm [±0,1 mm]
Weight
1898.4 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

554.55 zł net / pcs

682.10 zł with VAT (23% VAT) / pcs

price for transport

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Quantity
Net
Gross
price from 1 pcs
554.55 zł
682.10 zł
price from 5 pcs
488.00 zł
600.24 zł

Frequently asked questions

Where can I buy strong cylindrical neodymium magnets?
See the available cylinders in the DHIT catalogue. Compare dimensions, grade and the pull-force value on each product card; grade alone does not determine the pull force of a finished magnet.
Can a small cylindrical magnet provide a strong grip for precise workshop work?
Yes, but size alone is not enough to predict the result. Geometry, the steel surface and the direction of load affect the grip. Compare the specifications of the selected dimensions on their product cards.
Which cylindrical magnet can work at a higher temperature?
Check the operating-temperature limit of the particular model rather than assuming one limit for all N grades. The offered N52 models are rated up to 60°C. For hotter applications, ask for a product with a confirmed specification for the actual working temperature.

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Detailed specification - MW 12x4 zestaw 560 szt. / N38 - cylindrical magnet

Specification / characteristics - MW 12x4 zestaw 560 szt. / N38 - cylindrical magnet

properties
properties values
Cat. no. 010564
GTIN/EAN 5906301815563
Distributor Dhit sp. z o.o.
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 12 mm [±0,1 mm]
Height 4 mm [±0,1 mm]
Weight 1898.4 g
Magnetization Direction ↑ axial
Load capacity ~ ? 3.45 kg / 33.83 N
Magnetic Induction ~ ? 343.64 mT / 3436 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 12x4 zestaw 560 szt. / N38 - cylindrical magnet
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°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 310 °C
Curie Temperature TF 590 °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 simulation of the magnet - technical parameters

The following information constitute the direct effect of a mathematical analysis. Results rely on models for the class Nd2Fe14B. Actual conditions might slightly differ from theoretical values. Treat these data as a reference point for designers.

Table 1: Static pull force (force vs gap) - characteristics
MW 12x4 zestaw 560 szt. / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3435 Gs
343.5 mT
3.45 kg / 7.61 lbs
3450.0 g / 33.8 N
strong
1 mm 2950 Gs
295.0 mT
2.54 kg / 5.61 lbs
2544.7 g / 25.0 N
strong
2 mm 2423 Gs
242.3 mT
1.72 kg / 3.79 lbs
1717.5 g / 16.8 N
low risk
3 mm 1935 Gs
193.5 mT
1.09 kg / 2.41 lbs
1094.6 g / 10.7 N
low risk
5 mm 1190 Gs
119.0 mT
0.41 kg / 0.91 lbs
413.8 g / 4.1 N
low risk
10 mm 382 Gs
38.2 mT
0.04 kg / 0.09 lbs
42.7 g / 0.4 N
low risk
15 mm 156 Gs
15.6 mT
0.01 kg / 0.02 lbs
7.1 g / 0.1 N
low risk
20 mm 76 Gs
7.6 mT
0.00 kg / 0.00 lbs
1.7 g / 0.0 N
low risk
30 mm 26 Gs
2.6 mT
0.00 kg / 0.00 lbs
0.2 g / 0.0 N
low risk
50 mm 6 Gs
0.6 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk

Table 2: Shear force (wall)
MW 12x4 zestaw 560 szt. / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Raw steel (µ ≈ 0.2) 0.69 kg / 1.52 lbs
690.0 g / 6.8 N
1 mm Raw steel (µ ≈ 0.2) 0.51 kg / 1.12 lbs
508.0 g / 5.0 N
2 mm Raw steel (µ ≈ 0.2) 0.34 kg / 0.76 lbs
344.0 g / 3.4 N
3 mm Raw steel (µ ≈ 0.2) 0.22 kg / 0.48 lbs
218.0 g / 2.1 N
5 mm Raw steel (µ ≈ 0.2) 0.08 kg / 0.18 lbs
82.0 g / 0.8 N
10 mm Raw steel (µ ≈ 0.2) 0.01 kg / 0.02 lbs
8.0 g / 0.1 N
15 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
2.0 g / 0.0 N
20 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
30 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
50 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N

Table 3: Wall mounting (shearing) - vertical pull
MW 12x4 zestaw 560 szt. / N38

Surface type Friction coefficient / % Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% of nominal force
1.04 kg / 2.28 lbs
1035.0 g / 10.2 N
Painted steel (standard)
µ = 0.2 20% of nominal force
0.69 kg / 1.52 lbs
690.0 g / 6.8 N
Oily/slippery steel
µ = 0.1 10% of nominal force
0.35 kg / 0.76 lbs
345.0 g / 3.4 N
Magnet with anti-slip rubber
µ = 0.5 50% of nominal force
1.73 kg / 3.80 lbs
1725.0 g / 16.9 N

Table 4: Material efficiency (saturation) - power losses
MW 12x4 zestaw 560 szt. / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.35 kg / 0.76 lbs
345.0 g / 3.4 N
1 mm
25%
0.86 kg / 1.90 lbs
862.5 g / 8.5 N
2 mm
50%
1.73 kg / 3.80 lbs
1725.0 g / 16.9 N
3 mm
75%
2.59 kg / 5.70 lbs
2587.5 g / 25.4 N
5 mm
100%
3.45 kg / 7.61 lbs
3450.0 g / 33.8 N
10 mm
100%
3.45 kg / 7.61 lbs
3450.0 g / 33.8 N
11 mm
100%
3.45 kg / 7.61 lbs
3450.0 g / 33.8 N
12 mm
100%
3.45 kg / 7.61 lbs
3450.0 g / 33.8 N

Table 5: Thermal stability (material behavior) - resistance threshold
MW 12x4 zestaw 560 szt. / N38

Magnet temperature (°C) Force change relative to 20°C Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 3.45 kg / 7.61 lbs
3450.0 g / 33.8 N
Estimate
40 °C -4.4% 3.30 kg / 7.27 lbs
3299.9 g / 32.4 N
Estimate
60 °C -8.6% 3.15 kg / 6.95 lbs
3153.1 g / 30.9 N
Estimate
80 °C -12.8% 3.01 kg / 6.64 lbs
3009.6 g / 29.5 N
Material limit
100 °C — — Out of range — no model

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 12x4 zestaw 560 szt. / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 8.23 kg / 18.13 lbs
4 952 Gs
1.23 kg / 2.72 lbs
1234 g / 12.1 N
N/A
1 mm 7.16 kg / 15.79 lbs
6 410 Gs
1.07 kg / 2.37 lbs
1074 g / 10.5 N
6.45 kg / 14.21 lbs
~0 Gs
2 mm 6.07 kg / 13.38 lbs
5 900 Gs
0.91 kg / 2.01 lbs
910 g / 8.9 N
5.46 kg / 12.04 lbs
~0 Gs
3 mm 5.03 kg / 11.09 lbs
5 372 Gs
0.75 kg / 1.66 lbs
754 g / 7.4 N
4.53 kg / 9.98 lbs
~0 Gs
5 mm 3.29 kg / 7.25 lbs
4 342 Gs
0.49 kg / 1.09 lbs
493 g / 4.8 N
2.96 kg / 6.52 lbs
~0 Gs
10 mm 0.99 kg / 2.18 lbs
2 379 Gs
0.15 kg / 0.33 lbs
148 g / 1.5 N
0.89 kg / 1.96 lbs
~0 Gs
20 mm 0.10 kg / 0.22 lbs
764 Gs
0.02 kg / 0.03 lbs
15 g / 0.1 N
0.09 kg / 0.20 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
85 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
52 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
34 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
23 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
17 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
12 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs

Table 7: Axial field levels — not safety zones
MW 12x4 zestaw 560 szt. / N38

Field level (Gs) mT Model distance (cm)
< 5 Gs < 0.5 mT 5.5 cm
< 10 Gs < 1.0 mT 4.5 cm
< 20 Gs < 2.0 mT 3.5 cm
< 40 Gs < 4.0 mT 3.0 cm
< 50 Gs < 5.0 mT 2.5 cm
< 400 Gs < 40.0 mT 1.0 cm
< 600 Gs < 60.0 mT 1.0 cm

Table 8: Collisions (cracking risk) - collision effects
MW 12x4 zestaw 560 szt. / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 1.08 km/h
(0.30 m/s)
0.09 J
30 mm 1.09 km/h
(0.30 m/s)
0.09 J
50 mm 1.09 km/h
(0.30 m/s)
0.09 J
100 mm 1.09 km/h
(0.30 m/s)
0.09 J

Table 9: Surface protection spec
MW 12x4 zestaw 560 szt. / 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)

Table 10: Electrical data (Flux)
MW 12x4 zestaw 560 szt. / N38

Parameter Value SI Unit / Description
Magnetic Flux 4 114 Mx 41.1 µWb
Pc Coefficient 0.44 Low (Flat)

Table 11: Submerged application
MW 12x4 zestaw 560 szt. / N38

Environment Effective steel pull Effect
Air (land) 3.45 kg Standard
Water (riverbed) 3.95 kg
(+0.50 kg buoyancy gain)
+14.5%
Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

1. Wall mount (shear)

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

2. Plate thickness effect

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

3. Heat tolerance

N38: the maximum material working temperature is 80°C. Permitted conditions also depend on the shape and magnetic circuit.

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

chart generated for the permeance coefficient Pc (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 Pc (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 Pc 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%

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: 010564-2026
Quick Unit Converter

Magnet pull force


Field Strength

Other products

The presented product is a very strong cylinder magnet, composed of advanced NdFeB material, which, with dimensions of Ø12x4 mm, guarantees maximum efficiency. This specific item features high dimensional repeatability and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 3.45 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 33.83 N with a weight of only 1898.4 g, this rod is indispensable in miniature devices and wherever every gram matters.
Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 12.1 mm) using two-component 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.
Choose the material grade together with the dimensions and working conditions. A grade designation alone does not determine the pull force of the finished magnet. Check the properties and working temperature of this specific model on its product card; contact us before ordering for an unusual application.
The presented product is a neodymium magnet with precisely defined parameters: diameter 12 mm and height 4 mm. The value of 33.83 N means that the magnet is capable of holding a weight many times exceeding its own mass of 1898.4 g. The product has a [NiCuNi] coating, which secures it against oxidation, 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 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 through the diameter if your project requires it.

Pros and cons of Nd2Fe14B magnets.

Pros

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They have unchanged lifting capacity, and over nearly 10 years their performance decreases symbolically – ~1% (according to theory),
  • Neodymium magnets are remarkably resistant to magnetic field loss caused by external magnetic fields,
  • A magnet with a shiny nickel surface is more attractive,
  • Neodymium magnets achieve maximum magnetic induction on a small surface, which ensures high operational effectiveness,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • Thanks to versatility in constructing and the capacity to customize to complex applications,
  • Huge importance in innovative solutions – they are utilized in computer drives, electric drive systems, medical devices, as well as technologically advanced constructions.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Cons

Disadvantages of NdFeB magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
  • Due to limitations in realizing threads and complicated shapes in magnets, we propose using casing - magnetic holder.
  • Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child safety. Furthermore, tiny parts of these magnets can disrupt the diagnostic process medical when they are in the body.
  • Due to neodymium price, their price exceeds standard values,

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

The declared magnet strength concerns the maximum value, recorded under optimal environment, namely:
  • on a block made of structural steel, perfectly concentrating the magnetic field
  • whose thickness equals approx. 10 mm
  • with a plane free of scratches
  • without any insulating layer between the magnet and steel
  • during pulling in a direction vertical to the plane
  • at temperature room level

Key elements affecting lifting force

During everyday use, the actual holding force is determined by a number of factors, listed from most significant:
  • Air gap (betwixt the magnet and the metal), as even a very small distance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to paint, rust or debris).
  • Loading method – declared lifting capacity refers to pulling vertically. When slipping, the magnet holds much less (typically approx. 20-30% of maximum force).
  • Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Steel grade – the best choice is pure iron steel. Hardened steels may generate lower lifting capacity.
  • Surface finish – full contact is obtained only on smooth steel. Rough texture create air cushions, weakening the magnet.
  • Thermal factor – hot environment reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the load capacity is reduced by as much as 5 times. Additionally, even a small distance between the magnet and the plate lowers the lifting capacity.

H&S for magnets
Thermal limits

Do not exceed the maximum operating temperature stated in the specifications of the particular product. The limit depends on the material, geometry and operating arrangement; there is no single threshold for all neodymium magnets. Overheating can permanently weaken a magnet.

Metal Allergy

A percentage of the population have a sensitization to Ni, which is the typical protective layer for neodymium magnets. Prolonged contact may cause skin redness. We strongly advise use safety gloves.

Impact on smartphones

GPS units and smartphones are highly susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.

Electronic hazard

Data protection: Strong magnets can ruin data carriers and sensitive devices (heart implants, hearing aids, timepieces).

Flammability

Powder created during machining of magnets is combustible. Do not drill into magnets unless you are an expert.

Medical implants

Warning for patients: Strong magnetic fields affect electronics. Maintain at least 30 cm distance or request help to work with the magnets.

Beware of splinters

Beware of splinters. Magnets can fracture upon violent connection, ejecting sharp fragments into the air. Eye protection is mandatory.

Immense force

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

Bone fractures

Large magnets can smash fingers in a fraction of a second. Never place your hand between two strong magnets.

Do not give to children

Strictly store magnets out of reach of children. Ingestion danger is high, and the consequences of magnets connecting inside the body are tragic.

Safety First! More info about risks in the article: Safety of working with magnets.