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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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Detailed specification - 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 analysis of the product - technical parameters

These data represent the direct effect of a physical analysis. Results rely on algorithms for the class Nd2Fe14B. Actual conditions might slightly deviate from the simulation results. Use these calculations as a reference point during assembly planning.

Table 1: Static force (force vs gap) - characteristics
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 pounds
23670.0 g / 232.2 N
dangerous!
1 mm 3064 Gs
306.4 mT
21.54 kg / 47.49 pounds
21539.1 g / 211.3 N
dangerous!
2 mm 2901 Gs
290.1 mT
19.30 kg / 42.55 pounds
19302.3 g / 189.4 N
dangerous!
3 mm 2728 Gs
272.8 mT
17.07 kg / 37.64 pounds
17072.3 g / 167.5 N
dangerous!
5 mm 2373 Gs
237.3 mT
12.91 kg / 28.47 pounds
12913.7 g / 126.7 N
dangerous!
10 mm 1569 Gs
156.9 mT
5.65 kg / 12.45 pounds
5648.1 g / 55.4 N
strong
15 mm 1004 Gs
100.4 mT
2.31 kg / 5.10 pounds
2312.6 g / 22.7 N
strong
20 mm 650 Gs
65.0 mT
0.97 kg / 2.14 pounds
969.4 g / 9.5 N
safe
30 mm 299 Gs
29.9 mT
0.21 kg / 0.45 pounds
205.1 g / 2.0 N
safe
50 mm 90 Gs
9.0 mT
0.02 kg / 0.04 pounds
18.7 g / 0.2 N
safe

Table 2: Sliding load (vertical surface)
MW 33x10 / N38

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

Table 3: Wall mounting (shearing) - 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 pounds
7101.0 g / 69.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
4.73 kg / 10.44 pounds
4734.0 g / 46.4 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
2.37 kg / 5.22 pounds
2367.0 g / 23.2 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
11.84 kg / 26.09 pounds
11835.0 g / 116.1 N

Table 4: Material efficiency (saturation) - 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 pounds
1183.5 g / 11.6 N
1 mm
13%
2.96 kg / 6.52 pounds
2958.8 g / 29.0 N
2 mm
25%
5.92 kg / 13.05 pounds
5917.5 g / 58.1 N
3 mm
38%
8.88 kg / 19.57 pounds
8876.3 g / 87.1 N
5 mm
63%
14.79 kg / 32.61 pounds
14793.8 g / 145.1 N
10 mm
100%
23.67 kg / 52.18 pounds
23670.0 g / 232.2 N
11 mm
100%
23.67 kg / 52.18 pounds
23670.0 g / 232.2 N
12 mm
100%
23.67 kg / 52.18 pounds
23670.0 g / 232.2 N

Table 5: Working in heat (material behavior) - power drop
MW 33x10 / N38

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

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

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

Table 7: Safety (HSE) (implants) - precautionary measures
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
Timepiece 20 Gs (2.0 mT) 9.0 cm
Mobile device 40 Gs (4.0 mT) 7.0 cm
Remote 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: Anti-corrosion coating 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: Submerged application
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%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Shear force

*Caution: On a vertical wall, the magnet holds just approx. 20-30% of its perpendicular strength.

2. Steel saturation

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

3. Temperature resistance

*For N38 grade, the critical limit 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 and environmental data
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%
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)

Field Strength

Other proposals

This product is an incredibly powerful cylinder magnet, composed of advanced NdFeB material, which, at dimensions of Ø33x10 mm, guarantees maximum efficiency. The MW 33x10 / N38 component boasts high dimensional repeatability and industrial build quality, making it an excellent solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 23.67 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is perfect 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 232.15 N with a weight of only 64.15 g, this cylindrical magnet is indispensable in electronics 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., 33.1 mm) using two-component epoxy glues. To ensure stability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Magnets N38 are strong enough for the majority 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 store.
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 value of 232.15 N means that the magnet is capable of holding a weight many times exceeding its own mass of 64.15 g. The product has a [NiCuNi] coating, which protects the surface 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 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 neodymium magnets.

Benefits

Besides their high retention, neodymium magnets are valued for these benefits:
  • They retain full power for nearly 10 years – the drop is just ~1% (based on simulations),
  • They do not lose their magnetic properties even under strong external field,
  • In other words, due to the metallic surface of silver, the element is aesthetically pleasing,
  • Magnets have extremely high magnetic induction on the working surface,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to versatility in designing and the ability to customize to specific needs,
  • Fundamental importance in advanced technology sectors – they are commonly used in computer drives, electromotive mechanisms, medical devices, also multitasking production systems.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Cons

What to avoid - cons of neodymium magnets: application proposals
  • At strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
  • Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • We suggest a housing - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complicated forms.
  • Potential hazard resulting from small fragments of magnets can be dangerous, in case of ingestion, which gains importance in the context of child health protection. Furthermore, small elements of these products can complicate diagnosis medical in case of swallowing.
  • Due to neodymium price, their price is relatively high,

Holding force characteristics

Maximum lifting capacity of the magnetwhat it depends on?

The specified lifting capacity refers to the limit force, recorded under laboratory conditions, namely:
  • using a sheet made of mild steel, acting as a magnetic yoke
  • whose thickness is min. 10 mm
  • characterized by lack of roughness
  • under conditions of ideal adhesion (surface-to-surface)
  • for force acting at a right angle (pull-off, not shear)
  • at conditions approx. 20°C

Lifting capacity in practice – influencing factors

During everyday use, the real power results from many variables, listed from the most important:
  • Clearance – existence of any layer (rust, dirt, gap) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
  • Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Steel grade – the best choice is pure iron steel. Hardened steels may attract less.
  • Smoothness – ideal contact is obtained only on polished steel. Rough texture create air cushions, reducing force.
  • Temperature influence – high temperature reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under parallel forces the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.

Precautions when working with NdFeB magnets
ICD Warning

Warning for patients: Powerful magnets affect electronics. Keep at least 30 cm distance or request help to handle the magnets.

Threat to navigation

Navigation devices and mobile phones are extremely susceptible to magnetic fields. Direct contact with a strong magnet can decalibrate the sensors in your phone.

Sensitization to coating

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If an allergic reaction appears, cease handling magnets and wear gloves.

Hand protection

Danger of trauma: The attraction force is so immense that it can cause blood blisters, pinching, and even bone fractures. Use thick gloves.

Threat to electronics

Very strong magnetic fields can destroy records on payment cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.

Do not underestimate power

Exercise caution. Neodymium magnets act from a distance and connect with massive power, often faster than you can react.

Shattering risk

Despite the nickel coating, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Dust explosion hazard

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

Operating temperature

Avoid heat. NdFeB magnets are susceptible to heat. If you need operation above 80°C, look for HT versions (H, SH, UH).

Choking Hazard

These products are not suitable for play. Accidental ingestion of multiple magnets may result in them attracting across intestines, which constitutes a critical condition and necessitates urgent medical intervention.

Attention! Details about hazards in the article: Safety of working with magnets.