Product on order Ships in 3-5 days CO2 GPSR PPWR REACH

MW 3x2 zestaw 50 szt. / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010538

GTIN/EAN: 5906301815297

Load capacity 0.30 kg / 2.99 N Magnetic Induction 493.99 mT / 4940 Gs
Diameter Ø
3 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
5.5 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

6.00 zł net / pcs

7.38 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?

Quantity
Net
Gross
price from 1 pcs
6.00 zł
7.38 zł
price from 100 pcs
5.64 zł
6.94 zł
price from 450 pcs
5.28 zł
6.49 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.

Order by 14:00 and we’ll ship today!

Technical - MW 3x2 zestaw 50 szt. / N38 - cylindrical magnet

Specification / characteristics - MW 3x2 zestaw 50 szt. / N38 - cylindrical magnet

properties
properties values
Cat. no. 010538
GTIN/EAN 5906301815297
Distributor Dhit sp. z o.o.
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 3 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 5.5 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.30 kg / 2.99 N
Magnetic Induction ~ ? 493.99 mT / 4940 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 3x2 zestaw 50 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

Physical modeling of the magnet - data

These values constitute the direct effect of a mathematical analysis. Values were calculated on models for the class Nd2Fe14B. Real-world performance might slightly differ. Treat these data as a reference point when designing systems.

Table 1: Static pull force (force vs distance) - power drop
MW 3x2 zestaw 50 szt. / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4928 Gs
492.8 mT
0.30 kg / 0.66 LBS
300.0 g / 2.9 N
low risk
1 mm 2106 Gs
210.6 mT
0.05 kg / 0.12 LBS
54.8 g / 0.5 N
low risk
2 mm 845 Gs
84.5 mT
0.01 kg / 0.02 LBS
8.8 g / 0.1 N
low risk
3 mm 393 Gs
39.3 mT
0.00 kg / 0.00 LBS
1.9 g / 0.0 N
low risk
5 mm 124 Gs
12.4 mT
0.00 kg / 0.00 LBS
0.2 g / 0.0 N
low risk
10 mm 21 Gs
2.1 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
15 mm 7 Gs
0.7 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
20 mm 3 Gs
0.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
30 mm 1 Gs
0.1 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
50 mm 0 Gs
0.0 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk

Table 2: Shear load (vertical surface)
MW 3x2 zestaw 50 szt. / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Raw steel (µ ≈ 0.2) 0.06 kg / 0.13 LBS
60.0 g / 0.6 N
1 mm Raw steel (µ ≈ 0.2) 0.01 kg / 0.02 LBS
10.0 g / 0.1 N
2 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
3 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
5 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
10 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
15 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 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 3x2 zestaw 50 szt. / N38

Surface type Friction coefficient / % Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% of nominal force
0.09 kg / 0.20 LBS
90.0 g / 0.9 N
Painted steel (standard)
µ = 0.2 20% of nominal force
0.06 kg / 0.13 LBS
60.0 g / 0.6 N
Oily/slippery steel
µ = 0.1 10% of nominal force
0.03 kg / 0.07 LBS
30.0 g / 0.3 N
Magnet with anti-slip rubber
µ = 0.5 50% of nominal force
0.15 kg / 0.33 LBS
150.0 g / 1.5 N

Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 3x2 zestaw 50 szt. / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.03 kg / 0.07 LBS
30.0 g / 0.3 N
1 mm
25%
0.08 kg / 0.17 LBS
75.0 g / 0.7 N
2 mm
50%
0.15 kg / 0.33 LBS
150.0 g / 1.5 N
3 mm
75%
0.22 kg / 0.50 LBS
225.0 g / 2.2 N
5 mm
100%
0.30 kg / 0.66 LBS
300.0 g / 2.9 N
10 mm
100%
0.30 kg / 0.66 LBS
300.0 g / 2.9 N
11 mm
100%
0.30 kg / 0.66 LBS
300.0 g / 2.9 N
12 mm
100%
0.30 kg / 0.66 LBS
300.0 g / 2.9 N

Table 5: Thermal stability (stability) - power drop
MW 3x2 zestaw 50 szt. / N38

Magnet temperature (°C) Force change relative to 20°C Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.30 kg / 0.66 LBS
300.0 g / 2.9 N
Estimate
40 °C -4.4% 0.29 kg / 0.63 LBS
286.9 g / 2.8 N
Estimate
60 °C -8.6% 0.27 kg / 0.60 LBS
274.2 g / 2.7 N
Estimate
80 °C -12.8% 0.26 kg / 0.58 LBS
261.7 g / 2.6 N
Material limit
100 °C — — Out of range — no model

Table 6: Two magnets (repulsion) - field range
MW 3x2 zestaw 50 szt. / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 1.06 kg / 2.33 LBS
5 766 Gs
0.16 kg / 0.35 LBS
159 g / 1.6 N
N/A
1 mm 0.49 kg / 1.08 LBS
6 712 Gs
0.07 kg / 0.16 LBS
74 g / 0.7 N
0.44 kg / 0.97 LBS
~0 Gs
2 mm 0.19 kg / 0.43 LBS
4 213 Gs
0.03 kg / 0.06 LBS
29 g / 0.3 N
0.17 kg / 0.38 LBS
~0 Gs
3 mm 0.08 kg / 0.17 LBS
2 629 Gs
0.01 kg / 0.02 LBS
11 g / 0.1 N
0.07 kg / 0.15 LBS
~0 Gs
5 mm 0.01 kg / 0.03 LBS
1 131 Gs
0.00 kg / 0.00 LBS
2 g / 0.0 N
0.01 kg / 0.03 LBS
~0 Gs
10 mm 0.00 kg / 0.00 LBS
248 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
20 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
50 mm 0.00 kg / 0.00 LBS
3 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
2 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
1 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
1 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
1 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
0 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 3x2 zestaw 50 szt. / N38

Field level (Gs) mT Model distance (cm)
< 5 Gs < 0.5 mT 2.0 cm
< 10 Gs < 1.0 mT 1.5 cm
< 20 Gs < 2.0 mT 1.5 cm
< 40 Gs < 4.0 mT 1.0 cm
< 50 Gs < 5.0 mT 1.0 cm
< 400 Gs < 40.0 mT 0.5 cm
< 600 Gs < 60.0 mT 0.5 cm

Table 8: Collisions (cracking risk) - warning
MW 3x2 zestaw 50 szt. / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 2.92 km/h
(0.81 m/s)
0.00 J
30 mm 2.92 km/h
(0.81 m/s)
0.00 J
50 mm 2.92 km/h
(0.81 m/s)
0.00 J
100 mm 2.92 km/h
(0.81 m/s)
0.00 J

Table 9: Anti-corrosion coating durability
MW 3x2 zestaw 50 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: Construction data (Pc)
MW 3x2 zestaw 50 szt. / N38

Parameter Value SI Unit / Description
Magnetic Flux 353 Mx 3.5 µWb
Pc Coefficient 0.71 High (Stable)

Table 11: Physics of underwater searching
MW 3x2 zestaw 50 szt. / N38

Environment Effective steel pull Effect
Air (land) 0.30 kg Standard
Water (riverbed) 0.34 kg
(+0.04 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

1. Sliding resistance

*Note: On a vertical surface, the magnet retains just ~20% of its max power.

2. Steel saturation

*Thin steel (e.g. 0.5mm PC case) significantly reduces 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) = 0.71

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 specification and ecology

Material specification

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%

Ecology and recycling (GPSR)

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: 010538-2026
Magnet Unit Converter

Magnet pull force


Field Strength

Check out more offers

The presented product is an incredibly powerful rod magnet, composed of advanced NdFeB material, which, with dimensions of Ø3x2 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. 0.30 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
This model is created for building electric motors, advanced Hall effect sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the high power of 2.99 N with a weight of only 5.5 g, this rod is indispensable in electronics 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 chipping the coating of this professional component. To ensure stability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability 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 Ø3x2 mm, which, at a weight of 5.5 g, makes it an element with impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 0.30 kg (force ~2.99 N), which, with such defined dimensions, proves the high grade 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 3 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.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Benefits

Besides their durability, neodymium magnets are valued for these benefits:
  • They do not lose power, even over nearly ten years – the drop in power is only ~1% (according to tests),
  • They do not lose their magnetic properties even under external field action,
  • In other words, due to the aesthetic finish of nickel, the element gains a professional look,
  • Neodymium magnets achieve maximum magnetic induction on a contact point, which ensures high operational effectiveness,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Thanks to flexibility in forming and the ability to modify to specific needs,
  • Fundamental importance in innovative solutions – they are commonly used in hard drives, electromotive mechanisms, medical devices, also technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which enables their usage in small systems

Cons

Disadvantages of NdFeB magnets:
  • At very strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
  • Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
  • They oxidize 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 creating threads inside the magnet and complex shapes.
  • Possible danger resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child health protection. It is also worth noting that small components of these devices can complicate diagnosis medical after entering the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum lifting force for a neodymium magnet – what affects it?

The load parameter shown refers to the peak performance, obtained under ideal test conditions, specifically:
  • using a base made of low-carbon steel, functioning as a magnetic yoke
  • possessing a thickness of minimum 10 mm to avoid saturation
  • with an ideally smooth touching surface
  • with total lack of distance (without impurities)
  • during detachment in a direction vertical to the plane
  • at temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

Bear in mind that the magnet holding may be lower subject to the following factors, starting with the most relevant:
  • Clearance – existence of any layer (paint, dirt, air) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Steel type – mild steel attracts best. Alloy admixtures decrease magnetic properties and holding force.
  • Surface quality – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Unevenness creates an air distance.
  • Thermal environment – temperature increase results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity was assessed with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, in contrast under parallel forces the load capacity is reduced by as much as 5 times. In addition, even a slight gap between the magnet and the plate reduces the lifting capacity.

Warnings
Medical implants

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

GPS and phone interference

Note: rare earth magnets produce a field that confuses precision electronics. Maintain a separation from your mobile, tablet, and navigation systems.

Keep away from computers

Data protection: Strong magnets can damage payment cards and sensitive devices (pacemakers, medical aids, mechanical watches).

Fragile material

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Clashing of two magnets leads to them cracking into small pieces.

Warning for allergy sufferers

Nickel alert: The Ni-Cu-Ni coating contains nickel. If skin irritation occurs, cease working with magnets and use protective gear.

Respect the power

Exercise caution. Neodymium magnets attract from a distance and connect with massive power, often quicker than you can move away.

Bone fractures

Danger of trauma: The pulling power is so immense that it can result in blood blisters, pinching, and broken bones. Protective gloves are recommended.

Flammability

Powder produced during cutting of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Permanent damage

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.

No play value

Absolutely keep magnets out of reach of children. Choking hazard is high, and the consequences of magnets connecting inside the body are life-threatening.

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