Product available Ships in 3 days

MW 33x30 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010058

GTIN/EAN: 5906301810575

Diameter Ø

33 mm [±0,1 mm]

Height

30 mm [±0,1 mm]

Weight

192.44 g

Magnetization Direction

↑ axial

Load capacity

35.84 kg / 351.54 N

Magnetic Induction

543.05 mT / 5430 Gs

Coating

[NiCuNi] Nickel

52.89 with VAT / pcs + price for transport

43.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
43.00 ZŁ
52.89 ZŁ
price from 20 pcs
40.42 ZŁ
49.72 ZŁ
price from 60 pcs
37.84 ZŁ
46.54 ZŁ
Do you have a dilemma?

Pick up the phone and ask +48 22 499 98 98 or drop us a message through inquiry form the contact form page.
Force along with structure of neodymium magnets can be checked using our modular calculator.

Orders placed before 14:00 will be shipped the same business day.

Technical - MW 33x30 / N38 - cylindrical magnet

Specification / characteristics - MW 33x30 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010058
GTIN/EAN 5906301810575
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 30 mm [±0,1 mm]
Weight 192.44 g
Magnetization Direction ↑ axial
Load capacity ~ ? 35.84 kg / 351.54 N
Magnetic Induction ~ ? 543.05 mT / 5430 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 33x30 / 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 assembly - report

The following data represent the result of a engineering simulation. Values were calculated on models for the material Nd2Fe14B. Actual conditions might slightly deviate from the simulation results. Use these calculations as a reference point during assembly planning.

Table 1: Static force (pull vs distance) - power drop
MW 33x30 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5429 Gs
542.9 mT
35.84 kg / 79.01 lbs
35840.0 g / 351.6 N
crushing
1 mm 5098 Gs
509.8 mT
31.60 kg / 69.67 lbs
31600.1 g / 310.0 N
crushing
2 mm 4765 Gs
476.5 mT
27.60 kg / 60.85 lbs
27601.7 g / 270.8 N
crushing
3 mm 4436 Gs
443.6 mT
23.93 kg / 52.76 lbs
23930.4 g / 234.8 N
crushing
5 mm 3810 Gs
381.0 mT
17.65 kg / 38.91 lbs
17650.2 g / 173.1 N
crushing
10 mm 2518 Gs
251.8 mT
7.71 kg / 17.00 lbs
7709.5 g / 75.6 N
medium risk
15 mm 1650 Gs
165.0 mT
3.31 kg / 7.30 lbs
3312.1 g / 32.5 N
medium risk
20 mm 1105 Gs
110.5 mT
1.49 kg / 3.27 lbs
1485.1 g / 14.6 N
weak grip
30 mm 546 Gs
54.6 mT
0.36 kg / 0.80 lbs
361.9 g / 3.5 N
weak grip
50 mm 184 Gs
18.4 mT
0.04 kg / 0.09 lbs
41.4 g / 0.4 N
weak grip

Table 2: Shear load (vertical surface)
MW 33x30 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 7.17 kg / 15.80 lbs
7168.0 g / 70.3 N
1 mm Stal (~0.2) 6.32 kg / 13.93 lbs
6320.0 g / 62.0 N
2 mm Stal (~0.2) 5.52 kg / 12.17 lbs
5520.0 g / 54.2 N
3 mm Stal (~0.2) 4.79 kg / 10.55 lbs
4786.0 g / 47.0 N
5 mm Stal (~0.2) 3.53 kg / 7.78 lbs
3530.0 g / 34.6 N
10 mm Stal (~0.2) 1.54 kg / 3.40 lbs
1542.0 g / 15.1 N
15 mm Stal (~0.2) 0.66 kg / 1.46 lbs
662.0 g / 6.5 N
20 mm Stal (~0.2) 0.30 kg / 0.66 lbs
298.0 g / 2.9 N
30 mm Stal (~0.2) 0.07 kg / 0.16 lbs
72.0 g / 0.7 N
50 mm Stal (~0.2) 0.01 kg / 0.02 lbs
8.0 g / 0.1 N

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 33x30 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
10.75 kg / 23.70 lbs
10752.0 g / 105.5 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
7.17 kg / 15.80 lbs
7168.0 g / 70.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
3.58 kg / 7.90 lbs
3584.0 g / 35.2 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
17.92 kg / 39.51 lbs
17920.0 g / 175.8 N

Table 4: Steel thickness (substrate influence) - power losses
MW 33x30 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
1.79 kg / 3.95 lbs
1792.0 g / 17.6 N
1 mm
13%
4.48 kg / 9.88 lbs
4480.0 g / 43.9 N
2 mm
25%
8.96 kg / 19.75 lbs
8960.0 g / 87.9 N
3 mm
38%
13.44 kg / 29.63 lbs
13440.0 g / 131.8 N
5 mm
63%
22.40 kg / 49.38 lbs
22400.0 g / 219.7 N
10 mm
100%
35.84 kg / 79.01 lbs
35840.0 g / 351.6 N
11 mm
100%
35.84 kg / 79.01 lbs
35840.0 g / 351.6 N
12 mm
100%
35.84 kg / 79.01 lbs
35840.0 g / 351.6 N

Table 5: Working in heat (stability) - resistance threshold
MW 33x30 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 35.84 kg / 79.01 lbs
35840.0 g / 351.6 N
OK
40 °C -2.2% 35.05 kg / 77.28 lbs
35051.5 g / 343.9 N
OK
60 °C -4.4% 34.26 kg / 75.54 lbs
34263.0 g / 336.1 N
OK
80 °C -6.6% 33.47 kg / 73.80 lbs
33474.6 g / 328.4 N
100 °C -28.8% 25.52 kg / 56.26 lbs
25518.1 g / 250.3 N

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 33x30 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 155.43 kg / 342.66 lbs
5 974 Gs
23.31 kg / 51.40 lbs
23314 g / 228.7 N
N/A
1 mm 146.19 kg / 322.29 lbs
10 531 Gs
21.93 kg / 48.34 lbs
21928 g / 215.1 N
131.57 kg / 290.06 lbs
~0 Gs
2 mm 137.04 kg / 302.12 lbs
10 196 Gs
20.56 kg / 45.32 lbs
20556 g / 201.7 N
123.34 kg / 271.91 lbs
~0 Gs
3 mm 128.20 kg / 282.64 lbs
9 862 Gs
19.23 kg / 42.40 lbs
19230 g / 188.6 N
115.38 kg / 254.37 lbs
~0 Gs
5 mm 111.55 kg / 245.93 lbs
9 199 Gs
16.73 kg / 36.89 lbs
16733 g / 164.2 N
100.40 kg / 221.34 lbs
~0 Gs
10 mm 76.54 kg / 168.75 lbs
7 620 Gs
11.48 kg / 25.31 lbs
11481 g / 112.6 N
68.89 kg / 151.87 lbs
~0 Gs
20 mm 33.43 kg / 73.71 lbs
5 036 Gs
5.02 kg / 11.06 lbs
5015 g / 49.2 N
30.09 kg / 66.34 lbs
~0 Gs
50 mm 3.08 kg / 6.78 lbs
1 528 Gs
0.46 kg / 1.02 lbs
462 g / 4.5 N
2.77 kg / 6.11 lbs
~0 Gs
60 mm 1.57 kg / 3.46 lbs
1 091 Gs
0.24 kg / 0.52 lbs
235 g / 2.3 N
1.41 kg / 3.11 lbs
~0 Gs
70 mm 0.85 kg / 1.87 lbs
803 Gs
0.13 kg / 0.28 lbs
127 g / 1.2 N
0.76 kg / 1.69 lbs
~0 Gs
80 mm 0.48 kg / 1.07 lbs
606 Gs
0.07 kg / 0.16 lbs
73 g / 0.7 N
0.44 kg / 0.96 lbs
~0 Gs
90 mm 0.29 kg / 0.64 lbs
468 Gs
0.04 kg / 0.10 lbs
43 g / 0.4 N
0.26 kg / 0.57 lbs
~0 Gs
100 mm 0.18 kg / 0.40 lbs
369 Gs
0.03 kg / 0.06 lbs
27 g / 0.3 N
0.16 kg / 0.36 lbs
~0 Gs

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 33x30 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 20.5 cm
Hearing aid 10 Gs (1.0 mT) 16.0 cm
Mechanical watch 20 Gs (2.0 mT) 12.5 cm
Mobile device 40 Gs (4.0 mT) 9.5 cm
Car key 50 Gs (5.0 mT) 9.0 cm
Payment card 400 Gs (40.0 mT) 4.0 cm
HDD hard drive 600 Gs (60.0 mT) 3.0 cm

Table 8: Impact energy (kinetic energy) - warning
MW 33x30 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 15.50 km/h
(4.31 m/s)
1.78 J
30 mm 23.99 km/h
(6.66 m/s)
4.27 J
50 mm 30.80 km/h
(8.55 m/s)
7.04 J
100 mm 43.52 km/h
(12.09 m/s)
14.06 J

Table 9: Coating parameters (durability)
MW 33x30 / 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 33x30 / N38

Parameter Value SI Unit / Description
Magnetic Flux 47 447 Mx 474.5 µWb
Pc Coefficient 0.85 High (Stable)

Table 11: Hydrostatics and buoyancy
MW 33x30 / N38

Environment Effective steel pull Effect
Air (land) 35.84 kg Standard
Water (riverbed) 41.04 kg
(+5.20 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. Vertical hold

*Note: On a vertical wall, the magnet retains only approx. 20-30% of its perpendicular strength.

2. Steel thickness impact

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

3. Heat tolerance

*For N38 material, the safety limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.85

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%
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: 010058-2026
Magnet Unit Converter
Pulling force

Field Strength

Other proposals

The offered product is a very strong rod magnet, composed of durable NdFeB material, which, with dimensions of Ø33x30 mm, guarantees maximum efficiency. This specific item is characterized by a tolerance of ±0.1mm and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 35.84 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
This model is created for building electric motors, advanced sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the pull force of 351.54 N with a weight of only 192.44 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.
Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this precision component. To ensure stability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most popular standard for industrial neodymium magnets, offering a great economic balance and operational stability. If you need the strongest magnets in the same volume (Ø33x30), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 33 mm and height 30 mm. The key parameter here is the lifting capacity amounting to approximately 35.84 kg (force ~351.54 N), which, with such defined dimensions, proves the high power 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. 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 and disadvantages of rare earth magnets.

Strengths

Besides their durability, neodymium magnets are valued for these benefits:
  • They do not lose strength, even over approximately ten years – the reduction in power is only ~1% (theoretically),
  • They have excellent resistance to weakening of magnetic properties due to external fields,
  • The use of an refined layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • The surface of neodymium magnets generates a strong magnetic field – this is a distinguishing feature,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Considering the option of accurate molding and adaptation to custom requirements, neodymium magnets can be created in a wide range of geometric configurations, which makes them more universal,
  • Universal use in future technologies – they serve a role in HDD drives, drive modules, diagnostic systems, as well as modern systems.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Disadvantages

Disadvantages of neodymium magnets:
  • Susceptibility to cracking 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 increases their durability
  • Neodymium magnets decrease their force 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
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • Limited ability of creating threads in the magnet and complex shapes - preferred is cover - magnetic holder.
  • Possible danger related to microscopic parts of magnets pose a threat, if swallowed, which gains importance in the context of child health protection. Additionally, small components 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 increases costs of application in large quantities

Lifting parameters

Best holding force of the magnet in ideal parameterswhat contributes to it?

The lifting capacity listed is a theoretical maximum value performed under the following configuration:
  • using a sheet made of mild steel, functioning as a circuit closing element
  • with a cross-section minimum 10 mm
  • with an polished contact surface
  • with zero gap (without coatings)
  • for force applied at a right angle (pull-off, not shear)
  • in neutral thermal conditions

What influences lifting capacity in practice

In real-world applications, the real power results from many variables, ranked from most significant:
  • Clearance – the presence of foreign body (rust, dirt, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Load vector – highest force is available only during perpendicular pulling. The resistance to sliding of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
  • Steel thickness – insufficiently thick steel does not close the flux, causing part of the power to be wasted into the air.
  • Metal type – not every steel reacts the same. High carbon content weaken the attraction effect.
  • Plate texture – smooth surfaces guarantee perfect abutment, which increases force. Rough surfaces weaken the grip.
  • Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity testing was carried out on a smooth plate of optimal thickness, under a perpendicular pulling force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 75%. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.

Safe handling of neodymium magnets
Impact on smartphones

Be aware: neodymium magnets produce a field that confuses precision electronics. Keep a separation from your mobile, device, and navigation systems.

Keep away from computers

Do not bring magnets near a wallet, laptop, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.

Allergy Warning

Studies show that nickel (the usual finish) is a strong allergen. If you have an allergy, prevent touching magnets with bare hands or opt for versions in plastic housing.

Maximum temperature

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

Material brittleness

Watch out for shards. Magnets can fracture upon violent connection, ejecting shards into the air. Eye protection is mandatory.

Safe operation

Before use, read the rules. Sudden snapping can break the magnet or injure your hand. Be predictive.

Implant safety

For implant holders: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Do not drill into magnets

Drilling and cutting of NdFeB material carries a risk of fire risk. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Crushing force

Pinching hazard: The attraction force is so immense that it can result in blood blisters, pinching, and even bone fractures. Use thick gloves.

Do not give to children

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

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