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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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Physical properties - 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 - data

Presented information constitute the outcome of a physical calculation. Results rely on algorithms for the class Nd2Fe14B. Operational conditions might slightly differ. Please consider these calculations as a reference point when designing systems.

Table 1: Static force (force vs distance) - power drop
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
medium risk
15 mm 1004 Gs
100.4 mT
2.31 kg / 5.10 pounds
2312.6 g / 22.7 N
medium risk
20 mm 650 Gs
65.0 mT
0.97 kg / 2.14 pounds
969.4 g / 9.5 N
weak grip
30 mm 299 Gs
29.9 mT
0.21 kg / 0.45 pounds
205.1 g / 2.0 N
weak grip
50 mm 90 Gs
9.0 mT
0.02 kg / 0.04 pounds
18.7 g / 0.2 N
weak grip

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 (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 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: Steel thickness (saturation) - sheet metal selection
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 (stability) - 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: Magnet-Magnet interaction (attraction) - forces in the system
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 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: Hazards (electronics) - 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
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: Collisions (cracking risk) - collision effects
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 (Flux)
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: 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

*Caution: On a vertical surface, the magnet holds merely a fraction of its nominal pull.

2. Steel thickness impact

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

3. Thermal stability

*For N38 material, 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
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%
Environmental data
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 a very strong rod magnet, manufactured from advanced NdFeB material, which, with dimensions of Ø33x10 mm, guarantees the highest energy density. The MW 33x10 / N38 component is characterized by high dimensional repeatability and industrial build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 23.67 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring 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 pull force of 232.15 N with a weight of only 64.15 g, this rod 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 industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering a great economic balance and high resistance to demagnetization. If you need even stronger 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 secures it against external factors, 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 diametrically if your project requires it.

Pros as well as cons of Nd2Fe14B magnets.

Benefits

Apart from their superior magnetic energy, neodymium magnets have these key benefits:
  • They retain full power for nearly ten years – the loss is just ~1% (according to analyses),
  • Magnets very well protect themselves against loss of magnetization caused by foreign field sources,
  • Thanks to the shimmering finish, the coating of Ni-Cu-Ni, gold, or silver gives an elegant appearance,
  • The surface of neodymium magnets generates a maximum magnetic field – this is a distinguishing feature,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • Due to the possibility of free forming and adaptation to unique requirements, neodymium magnets can be modeled in a wide range of geometric configurations, which expands the range of possible applications,
  • Wide application in advanced technology sectors – they serve a role in mass storage devices, motor assemblies, precision medical tools, also industrial machines.
  • Thanks to their power density, small magnets offer high operating force, with minimal size,

Limitations

Disadvantages of NdFeB magnets:
  • Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also raises their durability
  • Neodymium magnets decrease their strength 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 durability even at temperatures up to 230°C
  • They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Limited ability of creating threads in the magnet and complicated shapes - recommended is casing - magnet mounting.
  • Health risk to health – tiny shards of magnets pose a threat, in case of ingestion, which gains importance in the aspect of protecting the youngest. Additionally, small components of these products are able to disrupt the diagnostic process medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

Holding force of 23.67 kg is a measurement result executed under specific, ideal conditions:
  • with the application of a sheet made of low-carbon steel, ensuring full magnetic saturation
  • possessing a massiveness of at least 10 mm to avoid saturation
  • with an ground contact surface
  • without the slightest insulating layer between the magnet and steel
  • under axial application of breakaway force (90-degree angle)
  • at room temperature

Determinants of practical lifting force of a magnet

In practice, the actual holding force depends on several key aspects, presented from crucial:
  • Distance (between the magnet and the metal), as even a very small clearance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
  • Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
  • Steel thickness – too thin sheet does not accept the full field, causing part of the power to be wasted into the air.
  • Material composition – not every steel reacts the same. Alloy additives weaken the interaction with the magnet.
  • Smoothness – ideal contact is obtained only on polished steel. Rough texture reduce the real contact area, reducing force.
  • Thermal factor – high temperature reduces pulling force. Too high temperature can permanently damage the magnet.

Lifting capacity was assessed by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, however under shearing force the load capacity is reduced by as much as 75%. In addition, even a minimal clearance between the magnet and the plate decreases the holding force.

Safety rules for work with NdFeB magnets
Allergy Warning

Studies show that nickel (standard magnet coating) is a potent allergen. If you have an allergy, avoid touching magnets with bare hands or choose coated magnets.

Threat to navigation

Navigation devices and mobile phones are highly sensitive to magnetism. Close proximity with a strong magnet can permanently damage the sensors in your phone.

Handling rules

Use magnets consciously. Their huge power can surprise even experienced users. Be vigilant and respect their force.

Health Danger

Patients with a ICD have to maintain an safe separation from magnets. The magnetism can disrupt the operation of the implant.

Electronic hazard

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

Combustion hazard

Combustion risk: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this risks ignition.

Finger safety

Protect your hands. Two powerful magnets will join immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!

Beware of splinters

Neodymium magnets are ceramic materials, meaning they are very brittle. Impact of two magnets leads to them shattering into small pieces.

Demagnetization risk

Keep cool. Neodymium magnets are susceptible to heat. If you need operation above 80°C, look for special high-temperature series (H, SH, UH).

No play value

Absolutely store magnets out of reach of children. Ingestion danger is significant, and the effects of magnets clamping inside the body are tragic.

Security! More info about hazards in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98