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MW 12x3 zestaw 896 szt. / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010563

GTIN/EAN: 5906301815556

Load capacity 2.49 kg / 24.43 N Magnetic Induction 277.09 mT / 2771 Gs
Diameter Ø
12 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
2275.84 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

1099.97 zł net / pcs

1352.96 zł with VAT (23% VAT) / pcs

price for transport

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Gross
price from 1 pcs
1099.97 zł
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price from 5 pcs
967.97 zł
1190.61 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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Technical of the product - MW 12x3 zestaw 896 szt. / N38 - cylindrical magnet

Specification / characteristics - MW 12x3 zestaw 896 szt. / N38 - cylindrical magnet

properties
properties values
Cat. no. 010563
GTIN/EAN 5906301815556
Distributor Dhit sp. z o.o.
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 12 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 2275.84 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.49 kg / 24.43 N
Magnetic Induction ~ ? 277.09 mT / 2771 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 12x3 zestaw 896 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

Engineering analysis of the product - data

The following data are the result of a physical calculation. Results rely on algorithms for the class Nd2Fe14B. Actual conditions may deviate from the simulation results. Use these calculations as a reference point for designers.

Table 1: Static pull force (force vs gap) - interaction chart
MW 12x3 zestaw 896 szt. / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2770 Gs
277.0 mT
2.49 kg / 5.49 LBS
2490.0 g / 24.4 N
strong
1 mm 2420 Gs
242.0 mT
1.90 kg / 4.19 LBS
1900.6 g / 18.6 N
safe
2 mm 2009 Gs
200.9 mT
1.31 kg / 2.89 LBS
1309.4 g / 12.8 N
safe
3 mm 1611 Gs
161.1 mT
0.84 kg / 1.86 LBS
842.7 g / 8.3 N
safe
5 mm 991 Gs
99.1 mT
0.32 kg / 0.70 LBS
318.7 g / 3.1 N
safe
10 mm 313 Gs
31.3 mT
0.03 kg / 0.07 LBS
31.8 g / 0.3 N
safe
15 mm 125 Gs
12.5 mT
0.01 kg / 0.01 LBS
5.1 g / 0.0 N
safe
20 mm 61 Gs
6.1 mT
0.00 kg / 0.00 LBS
1.2 g / 0.0 N
safe
30 mm 20 Gs
2.0 mT
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
safe
50 mm 5 Gs
0.5 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
safe

Table 2: Shear force (wall)
MW 12x3 zestaw 896 szt. / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Raw steel (µ ≈ 0.2) 0.50 kg / 1.10 LBS
498.0 g / 4.9 N
1 mm Raw steel (µ ≈ 0.2) 0.38 kg / 0.84 LBS
380.0 g / 3.7 N
2 mm Raw steel (µ ≈ 0.2) 0.26 kg / 0.58 LBS
262.0 g / 2.6 N
3 mm Raw steel (µ ≈ 0.2) 0.17 kg / 0.37 LBS
168.0 g / 1.6 N
5 mm Raw steel (µ ≈ 0.2) 0.06 kg / 0.14 LBS
64.0 g / 0.6 N
10 mm Raw steel (µ ≈ 0.2) 0.01 kg / 0.01 LBS
6.0 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 (sliding) - vertical pull
MW 12x3 zestaw 896 szt. / N38

Surface type Friction coefficient / % Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% of nominal force
0.75 kg / 1.65 LBS
747.0 g / 7.3 N
Painted steel (standard)
µ = 0.2 20% of nominal force
0.50 kg / 1.10 LBS
498.0 g / 4.9 N
Oily/slippery steel
µ = 0.1 10% of nominal force
0.25 kg / 0.55 LBS
249.0 g / 2.4 N
Magnet with anti-slip rubber
µ = 0.5 50% of nominal force
1.25 kg / 2.74 LBS
1245.0 g / 12.2 N

Table 4: Material efficiency (substrate influence) - power losses
MW 12x3 zestaw 896 szt. / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.25 kg / 0.55 LBS
249.0 g / 2.4 N
1 mm
25%
0.62 kg / 1.37 LBS
622.5 g / 6.1 N
2 mm
50%
1.25 kg / 2.74 LBS
1245.0 g / 12.2 N
3 mm
75%
1.87 kg / 4.12 LBS
1867.5 g / 18.3 N
5 mm
100%
2.49 kg / 5.49 LBS
2490.0 g / 24.4 N
10 mm
100%
2.49 kg / 5.49 LBS
2490.0 g / 24.4 N
11 mm
100%
2.49 kg / 5.49 LBS
2490.0 g / 24.4 N
12 mm
100%
2.49 kg / 5.49 LBS
2490.0 g / 24.4 N

Table 5: Thermal resistance (material behavior) - power drop
MW 12x3 zestaw 896 szt. / N38

Magnet temperature (°C) Force change relative to 20°C Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.49 kg / 5.49 LBS
2490.0 g / 24.4 N
Estimate
40 °C -4.4% 2.38 kg / 5.25 LBS
2381.6 g / 23.4 N
Estimate
60 °C -8.6% 2.28 kg / 5.02 LBS
2275.7 g / 22.3 N
Estimate
80 °C -12.8% 2.17 kg / 4.79 LBS
2172.2 g / 21.3 N
Material limit
100 °C — — Out of range — no model

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 12x3 zestaw 896 szt. / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 5.35 kg / 11.79 LBS
4 377 Gs
0.80 kg / 1.77 LBS
802 g / 7.9 N
N/A
1 mm 4.75 kg / 10.46 LBS
5 218 Gs
0.71 kg / 1.57 LBS
712 g / 7.0 N
4.27 kg / 9.42 LBS
~0 Gs
2 mm 4.08 kg / 9.00 LBS
4 840 Gs
0.61 kg / 1.35 LBS
612 g / 6.0 N
3.67 kg / 8.10 LBS
~0 Gs
3 mm 3.42 kg / 7.55 LBS
4 433 Gs
0.51 kg / 1.13 LBS
514 g / 5.0 N
3.08 kg / 6.80 LBS
~0 Gs
5 mm 2.27 kg / 5.01 LBS
3 610 Gs
0.34 kg / 0.75 LBS
341 g / 3.3 N
2.04 kg / 4.51 LBS
~0 Gs
10 mm 0.68 kg / 1.51 LBS
1 982 Gs
0.10 kg / 0.23 LBS
103 g / 1.0 N
0.62 kg / 1.36 LBS
~0 Gs
20 mm 0.07 kg / 0.15 LBS
626 Gs
0.01 kg / 0.02 LBS
10 g / 0.1 N
0.06 kg / 0.14 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
67 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
41 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
27 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
18 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
13 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
10 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 12x3 zestaw 896 szt. / N38

Field level (Gs) mT Model distance (cm)
< 5 Gs < 0.5 mT 5.0 cm
< 10 Gs < 1.0 mT 4.0 cm
< 20 Gs < 2.0 mT 3.5 cm
< 40 Gs < 4.0 mT 2.5 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: Impact energy (cracking risk) - warning
MW 12x3 zestaw 896 szt. / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 0.86 km/h
(0.24 m/s)
0.06 J
30 mm 0.86 km/h
(0.24 m/s)
0.07 J
50 mm 0.86 km/h
(0.24 m/s)
0.07 J
100 mm 0.86 km/h
(0.24 m/s)
0.07 J

Table 9: Corrosion resistance
MW 12x3 zestaw 896 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 (Pc)
MW 12x3 zestaw 896 szt. / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 483 Mx 34.8 µWb
Pc Coefficient 0.35 Low (Flat)

Table 11: Hydrostatics and buoyancy
MW 12x3 zestaw 896 szt. / N38

Environment Effective steel pull Effect
Air (land) 2.49 kg Standard
Water (riverbed) 2.85 kg
(+0.36 kg buoyancy gain)
+14.5%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

1. Shear force

*Warning: On a vertical surface, the magnet retains only approx. 20-30% of its max power.

2. Plate thickness effect

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

3. Power loss vs temp

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) = 0.35

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. 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 and environmental data

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: 010563-2026
Quick Unit Converter

Magnet pull force


Field Strength

Other offers

The offered product is a very strong rod magnet, made from durable NdFeB material, which, at dimensions of Ø12x3 mm, guarantees optimal power. This specific item boasts a tolerance of ±0.1mm and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 2.49 kg), this product is in stock from our warehouse in Poland, ensuring quick order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is created for building generators, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the pull force of 24.43 N with a weight of only 2275.84 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.
Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure long-term durability in automation, specialized industrial adhesives are used, which are safe for nickel 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.
This model is characterized by dimensions Ø12x3 mm, which, at a weight of 2275.84 g, makes it an element with high magnetic energy density. The value of 24.43 N means that the magnet is capable of holding a weight many times exceeding its own mass of 2275.84 g. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 3 mm), which means that the N and S poles are located on the flat, circular surfaces. 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.

Pros as well as cons of neodymium magnets.

Strengths

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They have stable power, and over around 10 years their performance decreases symbolically – ~1% (in testing),
  • Magnets very well resist against demagnetization caused by external fields,
  • By applying a reflective layer of gold, the element has an aesthetic look,
  • They are known for high magnetic induction at the operating surface, which affects their effectiveness,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
  • In view of the possibility of accurate shaping and adaptation to unique needs, magnetic components can be manufactured in a broad palette of shapes and sizes, which increases their versatility,
  • Universal use in advanced technology sectors – they are utilized in computer drives, motor assemblies, medical equipment, as well as complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which allows their use in compact constructions

Limitations

Drawbacks and weaknesses of neodymium magnets: application proposals
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
  • Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
  • Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in creating nuts and complicated forms in magnets, we propose using casing - magnetic holder.
  • Possible danger resulting from small fragments of magnets are risky, when accidentally swallowed, which becomes key in the context of child health protection. Furthermore, small elements of these devices are able to complicate diagnosis medical after entering the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Highest magnetic holding force – what it depends on?

Breakaway force was defined for optimal configuration, assuming:
  • on a block made of structural steel, perfectly concentrating the magnetic field
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • with a plane free of scratches
  • with total lack of distance (no paint)
  • under perpendicular force vector (90-degree angle)
  • in stable room temperature

Practical aspects of lifting capacity – factors

During everyday use, the real power results from many variables, listed from the most important:
  • Air gap (betwixt the magnet and the metal), since even a very small distance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to varnish, rust or debris).
  • Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
  • Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
  • Plate material – mild steel attracts best. Alloy admixtures reduce magnetic properties and lifting capacity.
  • Surface structure – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
  • Temperature – heating the magnet results in weakening of force. Check the thermal limit for a given model.

Lifting capacity was determined by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate lowers the load capacity.

H&S for magnets
Machining danger

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

Handling guide

Handle with care. Rare earth magnets act from a distance and snap with huge force, often quicker than you can move away.

Crushing force

Large magnets can break fingers in a fraction of a second. Under no circumstances place your hand between two strong magnets.

Shattering risk

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

Avoid contact if allergic

Medical facts indicate that nickel (standard magnet coating) is a strong allergen. For allergy sufferers, avoid direct skin contact and select versions in plastic housing.

Choking Hazard

Only for adults. Small elements pose a choking risk, causing serious injuries. Keep out of reach of kids and pets.

Threat to navigation

Note: neodymium magnets produce a field that interferes with precision electronics. Keep a safe distance from your phone, device, and navigation systems.

Cards and drives

Very strong magnetic fields can corrupt files on credit cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.

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.

Health Danger

Individuals with a pacemaker should maintain an safe separation from magnets. The magnetic field can stop the operation of the life-saving device.

Important! Looking for details? Read our article: Are neodymium magnets dangerous?