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MW 33x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010057

GTIN/EAN: 5906301810568

5.00

Diameter Ø

33 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

64.15 g

Magnetization Direction

↑ axial

Load capacity

23.67 kg / 232.15 N

Magnetic Induction

321.26 mT / 3213 Gs

Coating

[NiCuNi] Nickel

26.52 with VAT / pcs + price for transport

21.56 ZŁ net + 23% VAT / pcs

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Technical data - MW 33x10 / N38 - cylindrical magnet

Specification / characteristics - MW 33x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010057
GTIN/EAN 5906301810568
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 33 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 64.15 g
Magnetization Direction ↑ axial
Load capacity ~ ? 23.67 kg / 232.15 N
Magnetic Induction ~ ? 321.26 mT / 3213 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 33x10 / 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

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

Engineering modeling of the magnet - technical parameters

Presented values constitute the direct effect of a physical simulation. Values rely on models for the class Nd2Fe14B. Real-world conditions may differ from theoretical values. Treat these calculations as a preliminary roadmap when designing systems.

Table 1: Static force (pull vs gap) - interaction chart
MW 33x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3212 Gs
321.2 mT
23.67 kg / 52.18 LBS
23670.0 g / 232.2 N
critical level
1 mm 3064 Gs
306.4 mT
21.54 kg / 47.49 LBS
21539.1 g / 211.3 N
critical level
2 mm 2901 Gs
290.1 mT
19.30 kg / 42.55 LBS
19302.3 g / 189.4 N
critical level
3 mm 2728 Gs
272.8 mT
17.07 kg / 37.64 LBS
17072.3 g / 167.5 N
critical level
5 mm 2373 Gs
237.3 mT
12.91 kg / 28.47 LBS
12913.7 g / 126.7 N
critical level
10 mm 1569 Gs
156.9 mT
5.65 kg / 12.45 LBS
5648.1 g / 55.4 N
medium risk
15 mm 1004 Gs
100.4 mT
2.31 kg / 5.10 LBS
2312.6 g / 22.7 N
medium risk
20 mm 650 Gs
65.0 mT
0.97 kg / 2.14 LBS
969.4 g / 9.5 N
weak grip
30 mm 299 Gs
29.9 mT
0.21 kg / 0.45 LBS
205.1 g / 2.0 N
weak grip
50 mm 90 Gs
9.0 mT
0.02 kg / 0.04 LBS
18.7 g / 0.2 N
weak grip

Table 2: Shear capacity (wall)
MW 33x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 4.73 kg / 10.44 LBS
4734.0 g / 46.4 N
1 mm Stal (~0.2) 4.31 kg / 9.50 LBS
4308.0 g / 42.3 N
2 mm Stal (~0.2) 3.86 kg / 8.51 LBS
3860.0 g / 37.9 N
3 mm Stal (~0.2) 3.41 kg / 7.53 LBS
3414.0 g / 33.5 N
5 mm Stal (~0.2) 2.58 kg / 5.69 LBS
2582.0 g / 25.3 N
10 mm Stal (~0.2) 1.13 kg / 2.49 LBS
1130.0 g / 11.1 N
15 mm Stal (~0.2) 0.46 kg / 1.02 LBS
462.0 g / 4.5 N
20 mm Stal (~0.2) 0.19 kg / 0.43 LBS
194.0 g / 1.9 N
30 mm Stal (~0.2) 0.04 kg / 0.09 LBS
42.0 g / 0.4 N
50 mm Stal (~0.2) 0.00 kg / 0.01 LBS
4.0 g / 0.0 N

Table 3: Wall mounting (sliding) - vertical pull
MW 33x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
7.10 kg / 15.66 LBS
7101.0 g / 69.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
4.73 kg / 10.44 LBS
4734.0 g / 46.4 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
2.37 kg / 5.22 LBS
2367.0 g / 23.2 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
11.84 kg / 26.09 LBS
11835.0 g / 116.1 N

Table 4: Material efficiency (substrate influence) - power losses
MW 33x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
1.18 kg / 2.61 LBS
1183.5 g / 11.6 N
1 mm
13%
2.96 kg / 6.52 LBS
2958.8 g / 29.0 N
2 mm
25%
5.92 kg / 13.05 LBS
5917.5 g / 58.1 N
3 mm
38%
8.88 kg / 19.57 LBS
8876.3 g / 87.1 N
5 mm
63%
14.79 kg / 32.61 LBS
14793.8 g / 145.1 N
10 mm
100%
23.67 kg / 52.18 LBS
23670.0 g / 232.2 N
11 mm
100%
23.67 kg / 52.18 LBS
23670.0 g / 232.2 N
12 mm
100%
23.67 kg / 52.18 LBS
23670.0 g / 232.2 N

Table 5: Thermal stability (stability) - resistance threshold
MW 33x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 23.67 kg / 52.18 LBS
23670.0 g / 232.2 N
OK
40 °C -2.2% 23.15 kg / 51.04 LBS
23149.3 g / 227.1 N
OK
60 °C -4.4% 22.63 kg / 49.89 LBS
22628.5 g / 222.0 N
80 °C -6.6% 22.11 kg / 48.74 LBS
22107.8 g / 216.9 N
100 °C -28.8% 16.85 kg / 37.15 LBS
16853.0 g / 165.3 N

Table 6: Two magnets (attraction) - field range
MW 33x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 54.40 kg / 119.94 LBS
4 780 Gs
8.16 kg / 17.99 LBS
8160 g / 80.1 N
N/A
1 mm 52.02 kg / 114.68 LBS
6 282 Gs
7.80 kg / 17.20 LBS
7803 g / 76.5 N
46.82 kg / 103.21 LBS
~0 Gs
2 mm 49.51 kg / 109.14 LBS
6 128 Gs
7.43 kg / 16.37 LBS
7426 g / 72.8 N
44.55 kg / 98.23 LBS
~0 Gs
3 mm 46.95 kg / 103.50 LBS
5 968 Gs
7.04 kg / 15.52 LBS
7042 g / 69.1 N
42.25 kg / 93.15 LBS
~0 Gs
5 mm 41.79 kg / 92.13 LBS
5 630 Gs
6.27 kg / 13.82 LBS
6268 g / 61.5 N
37.61 kg / 82.91 LBS
~0 Gs
10 mm 29.68 kg / 65.43 LBS
4 745 Gs
4.45 kg / 9.82 LBS
4452 g / 43.7 N
26.71 kg / 58.89 LBS
~0 Gs
20 mm 12.98 kg / 28.62 LBS
3 138 Gs
1.95 kg / 4.29 LBS
1947 g / 19.1 N
11.68 kg / 25.76 LBS
~0 Gs
50 mm 0.99 kg / 2.18 LBS
867 Gs
0.15 kg / 0.33 LBS
149 g / 1.5 N
0.89 kg / 1.97 LBS
~0 Gs
60 mm 0.47 kg / 1.04 LBS
598 Gs
0.07 kg / 0.16 LBS
71 g / 0.7 N
0.42 kg / 0.94 LBS
~0 Gs
70 mm 0.24 kg / 0.53 LBS
426 Gs
0.04 kg / 0.08 LBS
36 g / 0.4 N
0.22 kg / 0.47 LBS
~0 Gs
80 mm 0.13 kg / 0.28 LBS
312 Gs
0.02 kg / 0.04 LBS
19 g / 0.2 N
0.12 kg / 0.26 LBS
~0 Gs
90 mm 0.07 kg / 0.16 LBS
235 Gs
0.01 kg / 0.02 LBS
11 g / 0.1 N
0.07 kg / 0.14 LBS
~0 Gs
100 mm 0.04 kg / 0.09 LBS
181 Gs
0.01 kg / 0.01 LBS
6 g / 0.1 N
0.04 kg / 0.09 LBS
~0 Gs

Table 7: Protective zones (electronics) - warnings
MW 33x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 14.5 cm
Hearing aid 10 Gs (1.0 mT) 11.5 cm
Mechanical watch 20 Gs (2.0 mT) 9.0 cm
Mobile device 40 Gs (4.0 mT) 7.0 cm
Car key 50 Gs (5.0 mT) 6.5 cm
Payment card 400 Gs (40.0 mT) 3.0 cm
HDD hard drive 600 Gs (60.0 mT) 2.5 cm

Table 8: Impact energy (cracking risk) - warning
MW 33x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 22.07 km/h
(6.13 m/s)
1.21 J
30 mm 33.74 km/h
(9.37 m/s)
2.82 J
50 mm 43.34 km/h
(12.04 m/s)
4.65 J
100 mm 61.26 km/h
(17.02 m/s)
9.29 J

Table 9: Coating parameters (durability)
MW 33x10 / 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 33x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 29 509 Mx 295.1 µWb
Pc Coefficient 0.40 Low (Flat)

Table 11: Underwater work (magnet fishing)
MW 33x10 / N38

Environment Effective steel pull Effect
Air (land) 23.67 kg Standard
Water (riverbed) 27.10 kg
(+3.43 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. Shear force

*Note: On a vertical surface, the magnet retains merely approx. 20-30% of its nominal pull.

2. Plate thickness effect

*Thin metal sheet (e.g. 0.5mm PC case) drastically weakens the holding force.

3. Power loss vs temp

*For N38 material, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.40

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: 010057-2026
Quick Unit Converter
Force (pull)

Magnetic Induction

Check out also products

This product is an exceptionally strong cylindrical magnet, manufactured from durable NdFeB material, which, with dimensions of Ø33x10 mm, guarantees the highest energy density. This specific item boasts a tolerance of ±0.1mm and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a magnetic rod with impressive force (approx. 23.67 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 232.15 N with a weight of only 64.15 g, this cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.
Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure stability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Magnets N38 are suitable for 90% of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø33x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
This model is characterized by dimensions Ø33x10 mm, which, at a weight of 64.15 g, makes it an element with impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 23.67 kg (force ~232.15 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 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 33 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 diametrically if your project requires it.

Strengths and weaknesses of Nd2Fe14B magnets.

Benefits

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They have unchanged lifting capacity, and over more than 10 years their performance decreases symbolically – ~1% (according to theory),
  • They are extremely resistant to demagnetization induced by presence of other magnetic fields,
  • A magnet with a smooth nickel surface looks better,
  • They are known for high magnetic induction at the operating surface, making them more effective,
  • Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures approaching 230°C and above...
  • Possibility of precise modeling and optimizing to defined requirements,
  • Huge importance in future technologies – they are commonly used in HDD drives, brushless drives, medical devices, as well as other advanced devices.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:
  • They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
  • Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Limited ability of producing threads in the magnet and complicated forms - recommended is a housing - mounting mechanism.
  • Potential hazard related to microscopic parts of magnets are risky, if swallowed, which becomes key in the context of child health protection. Additionally, tiny parts of these magnets can be problematic in diagnostics medical when they are in the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Lifting parameters

Highest magnetic holding forcewhat affects it?

Breakaway force was determined for optimal configuration, assuming:
  • with the use of a sheet made of low-carbon steel, ensuring maximum field concentration
  • whose thickness is min. 10 mm
  • with an ground contact surface
  • under conditions of gap-free contact (surface-to-surface)
  • during pulling in a direction vertical to the mounting surface
  • at ambient temperature approx. 20 degrees Celsius

Impact of factors on magnetic holding capacity in practice

It is worth knowing that the application force may be lower depending on elements below, starting with the most relevant:
  • Air gap (betwixt the magnet and the plate), since even a tiny clearance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to paint, corrosion or debris).
  • Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
  • Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
  • Metal type – not every steel reacts the same. High carbon content weaken the interaction with the magnet.
  • Surface structure – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
  • Thermal conditions – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity was measured with the use of a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the lifting capacity is smaller. Additionally, even a slight gap between the magnet and the plate lowers the lifting capacity.

Precautions when working with NdFeB magnets
Thermal limits

Watch the temperature. Exposing the magnet to high heat will ruin its properties and strength.

Protective goggles

Neodymium magnets are ceramic materials, meaning they are very brittle. Collision of two magnets will cause them breaking into shards.

Safe operation

Exercise caution. Rare earth magnets act from a long distance and connect with huge force, often faster than you can react.

Data carriers

Avoid bringing magnets near a purse, computer, or TV. The magnetic field can destroy these devices and erase data from cards.

Magnetic interference

Remember: rare earth magnets produce a field that disrupts sensitive sensors. Keep a separation from your phone, tablet, and navigation systems.

Pinching danger

Watch your fingers. Two large magnets will join instantly with a force of massive weight, destroying anything in their path. Exercise extreme caution!

Implant safety

Warning for patients: Powerful magnets affect electronics. Maintain minimum 30 cm distance or request help to handle the magnets.

Keep away from children

Absolutely keep magnets out of reach of children. Risk of swallowing is significant, and the consequences of magnets clamping inside the body are very dangerous.

Combustion hazard

Drilling and cutting of neodymium magnets carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Metal Allergy

It is widely known that nickel (the usual finish) is a potent allergen. For allergy sufferers, refrain from direct skin contact and choose coated magnets.

Attention! Want to know more? Check our post: Why are neodymium magnets dangerous?