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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 specification of the product - 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 simulation of the magnet - data

The following information are the direct effect of a engineering simulation. Results were calculated on algorithms for the class Nd2Fe14B. Real-world conditions may differ from theoretical values. Treat these calculations as a preliminary roadmap for designers.

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 LBS
23670.0 g / 232.2 N
dangerous!
1 mm 3064 Gs
306.4 mT
21.54 kg / 47.49 LBS
21539.1 g / 211.3 N
dangerous!
2 mm 2901 Gs
290.1 mT
19.30 kg / 42.55 LBS
19302.3 g / 189.4 N
dangerous!
3 mm 2728 Gs
272.8 mT
17.07 kg / 37.64 LBS
17072.3 g / 167.5 N
dangerous!
5 mm 2373 Gs
237.3 mT
12.91 kg / 28.47 LBS
12913.7 g / 126.7 N
dangerous!
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
low risk
30 mm 299 Gs
29.9 mT
0.21 kg / 0.45 LBS
205.1 g / 2.0 N
low risk
50 mm 90 Gs
9.0 mT
0.02 kg / 0.04 LBS
18.7 g / 0.2 N
low risk

Table 2: Slippage 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 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 (shearing) - behavior on slippery surfaces
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: Steel thickness (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 (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 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: Magnet-Magnet interaction (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: Safety (HSE) (implants) - 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
Phone / Smartphone 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: Surface protection spec
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: Physics of underwater searching
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: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Shear force

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

2. Steel thickness impact

*Thin steel (e.g. computer case) significantly 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.

Engineering data and GPSR
Elemental analysis
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
Magnet pull force

Field Strength

View also proposals

This product is an exceptionally strong cylinder magnet, produced from durable NdFeB material, which, with dimensions of Ø33x10 mm, guarantees the highest energy density. The MW 33x10 / N38 component boasts a tolerance of ±0.1mm and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 23.67 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is ideal for building generators, advanced sensors, and efficient magnetic separators, 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 rod is indispensable in electronics and wherever low weight is crucial.
Since our magnets have a very precise dimensions, the best method 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 industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability 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 store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 33 mm and height 10 mm. The key parameter here is the holding force amounting to approximately 23.67 kg (force ~232.15 N), which, with such defined dimensions, proves the high grade of the NdFeB material. 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 10 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is standard 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 as well as cons of Nd2Fe14B magnets.

Benefits

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • Their magnetic field is maintained, and after around 10 years it drops only by ~1% (theoretically),
  • They retain their magnetic properties even under strong external field,
  • In other words, due to the glossy layer of gold, the element looks attractive,
  • They are known for high magnetic induction at the operating surface, making them more effective,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to modularity in designing and the ability to modify to client solutions,
  • Wide application in electronics industry – they find application in HDD drives, electromotive mechanisms, advanced medical instruments, and multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which allows their use in small systems

Limitations

Cons of neodymium magnets and proposals for their use:
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
  • Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • They oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • We recommend casing - magnetic holder, due to difficulties in creating threads inside the magnet and complicated shapes.
  • Health risk resulting from small fragments of magnets are risky, when accidentally swallowed, which gains importance in the context of child safety. Additionally, small components of these devices can complicate diagnosis medical after entering the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Breakaway strength of the magnet in ideal conditionswhat contributes to it?

Holding force of 23.67 kg is a measurement result performed under the following configuration:
  • with the contact of a yoke made of low-carbon steel, ensuring maximum field concentration
  • whose transverse dimension reaches at least 10 mm
  • with an polished touching surface
  • with total lack of distance (without coatings)
  • for force applied at a right angle (pull-off, not shear)
  • at room temperature

Determinants of practical lifting force of a magnet

In real-world applications, the real power depends on a number of factors, ranked from crucial:
  • Clearance – the presence of foreign body (rust, dirt, gap) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Loading method – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
  • Steel thickness – insufficiently thick plate causes magnetic saturation, causing part of the flux to be wasted into the air.
  • Material composition – different alloys attracts identically. Alloy additives worsen the attraction effect.
  • Surface structure – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Thermal factor – hot environment reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.

Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate reduces the holding force.

H&S for magnets
Safe operation

Before starting, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Be predictive.

Skin irritation risks

Certain individuals experience a sensitization to nickel, which is the standard coating for NdFeB magnets. Prolonged contact may cause skin redness. It is best to use protective gloves.

Heat sensitivity

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will ruin its properties and pulling force.

Threat to electronics

Equipment safety: Strong magnets can damage data carriers and delicate electronics (heart implants, medical aids, mechanical watches).

Bone fractures

Big blocks can break fingers instantly. Never place your hand betwixt two strong magnets.

Fragile material

Protect your eyes. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. Wear goggles.

Threat to navigation

A strong magnetic field interferes with the functioning of compasses in smartphones and GPS navigation. Maintain magnets close to a smartphone to prevent damaging the sensors.

Flammability

Fire warning: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.

Danger to the youngest

Product intended for adults. Tiny parts pose a choking risk, leading to serious injuries. Keep out of reach of kids and pets.

Warning for heart patients

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

Warning! Details about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98