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MW 29x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010053

GTIN/EAN: 5906301810520

5.00

Diameter Ø

29 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

49.54 g

Magnetization Direction

↑ axial

Load capacity

20.82 kg / 204.22 N

Magnetic Induction

351.88 mT / 3519 Gs

Coating

[NiCuNi] Nickel

17.34 with VAT / pcs + price for transport

14.10 ZŁ net + 23% VAT / pcs

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Technical - MW 29x10 / N38 - cylindrical magnet

Specification / characteristics - MW 29x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010053
GTIN/EAN 5906301810520
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 29 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 49.54 g
Magnetization Direction ↑ axial
Load capacity ~ ? 20.82 kg / 204.22 N
Magnetic Induction ~ ? 351.88 mT / 3519 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 29x10 / 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 assembly - technical parameters

These information represent the direct effect of a engineering simulation. Results were calculated on algorithms for the class Nd2Fe14B. Actual performance may differ from theoretical values. Use these data as a reference point when designing systems.

Table 1: Static force (force vs distance) - power drop
MW 29x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3518 Gs
351.8 mT
20.82 kg / 45.90 LBS
20820.0 g / 204.2 N
crushing
1 mm 3321 Gs
332.1 mT
18.55 kg / 40.89 LBS
18548.8 g / 182.0 N
crushing
2 mm 3106 Gs
310.6 mT
16.23 kg / 35.77 LBS
16226.1 g / 159.2 N
crushing
3 mm 2883 Gs
288.3 mT
13.98 kg / 30.82 LBS
13978.2 g / 137.1 N
crushing
5 mm 2437 Gs
243.7 mT
9.99 kg / 22.02 LBS
9987.1 g / 98.0 N
warning
10 mm 1500 Gs
150.0 mT
3.78 kg / 8.34 LBS
3783.1 g / 37.1 N
warning
15 mm 905 Gs
90.5 mT
1.38 kg / 3.04 LBS
1379.2 g / 13.5 N
low risk
20 mm 563 Gs
56.3 mT
0.53 kg / 1.17 LBS
532.4 g / 5.2 N
low risk
30 mm 247 Gs
24.7 mT
0.10 kg / 0.23 LBS
102.4 g / 1.0 N
low risk
50 mm 72 Gs
7.2 mT
0.01 kg / 0.02 LBS
8.7 g / 0.1 N
low risk

Table 2: Shear load (wall)
MW 29x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 4.16 kg / 9.18 LBS
4164.0 g / 40.8 N
1 mm Stal (~0.2) 3.71 kg / 8.18 LBS
3710.0 g / 36.4 N
2 mm Stal (~0.2) 3.25 kg / 7.16 LBS
3246.0 g / 31.8 N
3 mm Stal (~0.2) 2.80 kg / 6.16 LBS
2796.0 g / 27.4 N
5 mm Stal (~0.2) 2.00 kg / 4.40 LBS
1998.0 g / 19.6 N
10 mm Stal (~0.2) 0.76 kg / 1.67 LBS
756.0 g / 7.4 N
15 mm Stal (~0.2) 0.28 kg / 0.61 LBS
276.0 g / 2.7 N
20 mm Stal (~0.2) 0.11 kg / 0.23 LBS
106.0 g / 1.0 N
30 mm Stal (~0.2) 0.02 kg / 0.04 LBS
20.0 g / 0.2 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N

Table 3: Vertical assembly (sliding) - vertical pull
MW 29x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
6.25 kg / 13.77 LBS
6246.0 g / 61.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
4.16 kg / 9.18 LBS
4164.0 g / 40.8 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
2.08 kg / 4.59 LBS
2082.0 g / 20.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
10.41 kg / 22.95 LBS
10410.0 g / 102.1 N

Table 4: Steel thickness (saturation) - power losses
MW 29x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
1.04 kg / 2.30 LBS
1041.0 g / 10.2 N
1 mm
13%
2.60 kg / 5.74 LBS
2602.5 g / 25.5 N
2 mm
25%
5.21 kg / 11.48 LBS
5205.0 g / 51.1 N
3 mm
38%
7.81 kg / 17.21 LBS
7807.5 g / 76.6 N
5 mm
63%
13.01 kg / 28.69 LBS
13012.5 g / 127.7 N
10 mm
100%
20.82 kg / 45.90 LBS
20820.0 g / 204.2 N
11 mm
100%
20.82 kg / 45.90 LBS
20820.0 g / 204.2 N
12 mm
100%
20.82 kg / 45.90 LBS
20820.0 g / 204.2 N

Table 5: Working in heat (stability) - resistance threshold
MW 29x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 20.82 kg / 45.90 LBS
20820.0 g / 204.2 N
OK
40 °C -2.2% 20.36 kg / 44.89 LBS
20362.0 g / 199.8 N
OK
60 °C -4.4% 19.90 kg / 43.88 LBS
19903.9 g / 195.3 N
80 °C -6.6% 19.45 kg / 42.87 LBS
19445.9 g / 190.8 N
100 °C -28.8% 14.82 kg / 32.68 LBS
14823.8 g / 145.4 N

Table 6: Two magnets (repulsion) - field collision
MW 29x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 50.40 kg / 111.11 LBS
5 016 Gs
7.56 kg / 16.67 LBS
7560 g / 74.2 N
N/A
1 mm 47.70 kg / 105.17 LBS
6 845 Gs
7.16 kg / 15.78 LBS
7156 g / 70.2 N
42.93 kg / 94.65 LBS
~0 Gs
2 mm 44.90 kg / 98.99 LBS
6 641 Gs
6.74 kg / 14.85 LBS
6735 g / 66.1 N
40.41 kg / 89.09 LBS
~0 Gs
3 mm 42.08 kg / 92.77 LBS
6 429 Gs
6.31 kg / 13.92 LBS
6312 g / 61.9 N
37.87 kg / 83.50 LBS
~0 Gs
5 mm 36.52 kg / 80.52 LBS
5 990 Gs
5.48 kg / 12.08 LBS
5478 g / 53.7 N
32.87 kg / 72.47 LBS
~0 Gs
10 mm 24.18 kg / 53.30 LBS
4 873 Gs
3.63 kg / 7.99 LBS
3626 g / 35.6 N
21.76 kg / 47.97 LBS
~0 Gs
20 mm 9.16 kg / 20.19 LBS
2 999 Gs
1.37 kg / 3.03 LBS
1374 g / 13.5 N
8.24 kg / 18.17 LBS
~0 Gs
50 mm 0.54 kg / 1.19 LBS
729 Gs
0.08 kg / 0.18 LBS
81 g / 0.8 N
0.49 kg / 1.07 LBS
~0 Gs
60 mm 0.25 kg / 0.55 LBS
493 Gs
0.04 kg / 0.08 LBS
37 g / 0.4 N
0.22 kg / 0.49 LBS
~0 Gs
70 mm 0.12 kg / 0.27 LBS
347 Gs
0.02 kg / 0.04 LBS
18 g / 0.2 N
0.11 kg / 0.24 LBS
~0 Gs
80 mm 0.06 kg / 0.14 LBS
252 Gs
0.01 kg / 0.02 LBS
10 g / 0.1 N
0.06 kg / 0.13 LBS
~0 Gs
90 mm 0.04 kg / 0.08 LBS
188 Gs
0.01 kg / 0.01 LBS
5 g / 0.1 N
0.03 kg / 0.07 LBS
~0 Gs
100 mm 0.02 kg / 0.05 LBS
144 Gs
0.00 kg / 0.01 LBS
3 g / 0.0 N
0.02 kg / 0.04 LBS
~0 Gs

Table 7: Protective zones (electronics) - warnings
MW 29x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 13.5 cm
Hearing aid 10 Gs (1.0 mT) 10.5 cm
Mechanical watch 20 Gs (2.0 mT) 8.5 cm
Mobile device 40 Gs (4.0 mT) 6.5 cm
Car key 50 Gs (5.0 mT) 6.0 cm
Payment card 400 Gs (40.0 mT) 2.5 cm
HDD hard drive 600 Gs (60.0 mT) 2.0 cm

Table 8: Dynamics (cracking risk) - warning
MW 29x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 22.90 km/h
(6.36 m/s)
1.00 J
30 mm 35.92 km/h
(9.98 m/s)
2.47 J
50 mm 46.24 km/h
(12.85 m/s)
4.09 J
100 mm 65.38 km/h
(18.16 m/s)
8.17 J

Table 9: Anti-corrosion coating durability
MW 29x10 / 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 29x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 24 471 Mx 244.7 µWb
Pc Coefficient 0.45 Low (Flat)

Table 11: Submerged application
MW 29x10 / N38

Environment Effective steel pull Effect
Air (land) 20.82 kg Standard
Water (riverbed) 23.84 kg
(+3.02 kg buoyancy gain)
+14.5%
Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Sliding resistance

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

2. Plate thickness effect

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

3. Heat tolerance

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.45

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
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: 010053-2026
Quick Unit Converter
Force (pull)

Magnetic Field

See also deals

The presented product is a very strong cylindrical magnet, composed of durable NdFeB material, which, at dimensions of Ø29x10 mm, guarantees maximum efficiency. The MW 29x10 / N38 model features an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 20.82 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is perfect for building electric motors, advanced sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the high power of 204.22 N with a weight of only 49.54 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.
Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure stability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Magnets NdFeB grade N38 are suitable for the majority of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø29x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.
This model is characterized by dimensions Ø29x10 mm, which, at a weight of 49.54 g, makes it an element with impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 20.82 kg (force ~204.22 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 and cons of rare earth magnets.

Benefits

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They do not lose strength, even during around 10 years – the decrease in lifting capacity is only ~1% (theoretically),
  • They retain their magnetic properties even under strong external field,
  • The use of an elegant finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • They show high magnetic induction at the operating surface, which affects their effectiveness,
  • 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...
  • Thanks to flexibility in designing and the ability to modify to complex applications,
  • Significant place in future technologies – they are utilized in data components, electric motors, medical devices, also complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which enables their usage in compact constructions

Weaknesses

Disadvantages of neodymium magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a steel housing, which not only protects them against impacts but also raises their durability
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in realizing threads and complicated shapes in magnets, we recommend using a housing - magnetic mechanism.
  • Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which gains importance in the context of child health protection. Furthermore, small elements of these products can be problematic in diagnostics medical when they are in the body.
  • With large orders the cost of neodymium magnets is a challenge,

Pull force analysis

Optimal lifting capacity of a neodymium magnetwhat contributes to it?

Magnet power is the result of a measurement for the most favorable conditions, assuming:
  • using a plate made of mild steel, acting as a magnetic yoke
  • with a thickness minimum 10 mm
  • with a surface perfectly flat
  • without the slightest insulating layer between the magnet and steel
  • during detachment in a direction vertical to the mounting surface
  • at conditions approx. 20°C

Magnet lifting force in use – key factors

During everyday use, the actual lifting capacity depends on many variables, presented from most significant:
  • Gap (betwixt the magnet and the metal), because even a tiny clearance (e.g. 0.5 mm) results in a reduction in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
  • Direction of force – maximum parameter is available only during perpendicular pulling. The shear force of the magnet along the surface is standardly several times smaller (approx. 1/5 of the lifting capacity).
  • Base massiveness – insufficiently thick plate causes magnetic saturation, causing part of the flux to be wasted into the air.
  • Material type – the best choice is pure iron steel. Cast iron may generate lower lifting capacity.
  • Plate texture – ground elements guarantee perfect abutment, which increases field saturation. Rough surfaces weaken the grip.
  • Heat – NdFeB sinters have a negative temperature coefficient. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was assessed using a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under shearing force the holding force is lower. Moreover, even a small distance between the magnet and the plate decreases the holding force.

H&S for magnets
Combustion hazard

Fire hazard: Neodymium dust is explosive. Do not process magnets in home conditions as this may cause fire.

Magnets are brittle

Despite metallic appearance, the material is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Life threat

Medical warning: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Immense force

Handle magnets consciously. Their immense force can surprise even experienced users. Be vigilant and respect their force.

Data carriers

Powerful magnetic fields can destroy records on credit cards, hard drives, and storage devices. Stay away of min. 10 cm.

GPS Danger

Navigation devices and mobile phones are extremely sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.

Danger to the youngest

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

Metal Allergy

Certain individuals experience a sensitization to nickel, which is the typical protective layer for NdFeB magnets. Extended handling can result in an allergic reaction. We suggest use safety gloves.

Power loss in heat

Control the heat. Heating the magnet above 80 degrees Celsius will destroy its properties and strength.

Crushing risk

Risk of injury: The pulling power is so great that it can cause blood blisters, pinching, and broken bones. Use thick gloves.

Warning! Details about risks in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98