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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 data - 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

Technical simulation of the product - technical parameters

These data represent the direct effect of a engineering simulation. Values were calculated on algorithms for the material Nd2Fe14B. Operational conditions might slightly deviate from the simulation results. Use these calculations as a supplementary guide when designing systems.

Table 1: Static pull force (pull vs distance) - characteristics
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 pounds
20820.0 g / 204.2 N
crushing
1 mm 3321 Gs
332.1 mT
18.55 kg / 40.89 pounds
18548.8 g / 182.0 N
crushing
2 mm 3106 Gs
310.6 mT
16.23 kg / 35.77 pounds
16226.1 g / 159.2 N
crushing
3 mm 2883 Gs
288.3 mT
13.98 kg / 30.82 pounds
13978.2 g / 137.1 N
crushing
5 mm 2437 Gs
243.7 mT
9.99 kg / 22.02 pounds
9987.1 g / 98.0 N
strong
10 mm 1500 Gs
150.0 mT
3.78 kg / 8.34 pounds
3783.1 g / 37.1 N
strong
15 mm 905 Gs
90.5 mT
1.38 kg / 3.04 pounds
1379.2 g / 13.5 N
low risk
20 mm 563 Gs
56.3 mT
0.53 kg / 1.17 pounds
532.4 g / 5.2 N
low risk
30 mm 247 Gs
24.7 mT
0.10 kg / 0.23 pounds
102.4 g / 1.0 N
low risk
50 mm 72 Gs
7.2 mT
0.01 kg / 0.02 pounds
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 pounds
4164.0 g / 40.8 N
1 mm Stal (~0.2) 3.71 kg / 8.18 pounds
3710.0 g / 36.4 N
2 mm Stal (~0.2) 3.25 kg / 7.16 pounds
3246.0 g / 31.8 N
3 mm Stal (~0.2) 2.80 kg / 6.16 pounds
2796.0 g / 27.4 N
5 mm Stal (~0.2) 2.00 kg / 4.40 pounds
1998.0 g / 19.6 N
10 mm Stal (~0.2) 0.76 kg / 1.67 pounds
756.0 g / 7.4 N
15 mm Stal (~0.2) 0.28 kg / 0.61 pounds
276.0 g / 2.7 N
20 mm Stal (~0.2) 0.11 kg / 0.23 pounds
106.0 g / 1.0 N
30 mm Stal (~0.2) 0.02 kg / 0.04 pounds
20.0 g / 0.2 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
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 pounds
6246.0 g / 61.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
4.16 kg / 9.18 pounds
4164.0 g / 40.8 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
2.08 kg / 4.59 pounds
2082.0 g / 20.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
10.41 kg / 22.95 pounds
10410.0 g / 102.1 N

Table 4: Steel thickness (saturation) - sheet metal selection
MW 29x10 / N38

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

Table 5: Working in heat (material behavior) - thermal limit
MW 29x10 / N38

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

Table 6: Two magnets (attraction) - forces in the system
MW 29x10 / N38

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

Table 7: Protective zones (electronics) - precautionary measures
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
Timepiece 20 Gs (2.0 mT) 8.5 cm
Phone / Smartphone 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 (kinetic energy) - collision effects
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: Construction 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: Hydrostatics and buoyancy
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%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Sliding resistance

*Note: On a vertical surface, the magnet holds merely a fraction of its perpendicular strength.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) severely weakens the holding force.

3. Thermal stability

*For standard magnets, 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
Measurement Calculator
Force (pull)

Magnetic Induction

Other deals

The presented product is a very strong cylindrical magnet, composed of durable NdFeB material, which, at dimensions of Ø29x10 mm, guarantees optimal power. The MW 29x10 / N38 component is characterized by high dimensional repeatability and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 20.82 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. 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 low weight is crucial.
Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure stability in automation, anaerobic resins 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 modeling and machine building, where extreme 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 in continuous sale in our warehouse.
This model is characterized by dimensions Ø29x10 mm, which, at a weight of 49.54 g, makes it an element with high magnetic energy density. The value of 204.22 N means that the magnet is capable of holding a weight many times exceeding its own mass of 49.54 g. 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 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 through the diameter if your project requires it.

Advantages as well as disadvantages of rare earth magnets.

Benefits

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • They do not lose magnetism, even over approximately ten years – the decrease in strength is only ~1% (based on measurements),
  • They do not lose their magnetic properties even under external field action,
  • Thanks to the shiny finish, the plating of nickel, gold-plated, or silver gives an elegant appearance,
  • Neodymium magnets ensure maximum magnetic induction on a contact point, which allows for strong attraction,
  • Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
  • Considering the possibility of precise molding and customization to custom needs, neodymium magnets can be produced in a wide range of geometric configurations, which amplifies use scope,
  • Universal use in advanced technology sectors – they serve a role in hard drives, drive modules, medical devices, as well as modern systems.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Weaknesses

Cons of neodymium magnets and ways of using them
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
  • Neodymium magnets lose 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 durability even at temperatures up to 230°C
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
  • We recommend a housing - magnetic mount, due to difficulties in creating nuts inside the magnet and complicated forms.
  • Potential hazard related to microscopic parts of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child safety. Additionally, small elements of these magnets can disrupt the diagnostic process medical when they are in the body.
  • Due to complex production process, their price is higher than average,

Pull force analysis

Highest magnetic holding forcewhat contributes to it?

The declared magnet strength represents the peak performance, obtained under optimal environment, namely:
  • using a plate made of high-permeability steel, functioning as a circuit closing element
  • possessing a massiveness of minimum 10 mm to avoid saturation
  • with an ground touching surface
  • with zero gap (without impurities)
  • for force acting at a right angle (pull-off, not shear)
  • in stable room temperature

Determinants of lifting force in real conditions

Real force impacted by working environment parameters, mainly (from most important):
  • Gap (between the magnet and the plate), as even a very small distance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to varnish, corrosion or dirt).
  • Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet holds much less (typically approx. 20-30% of nominal force).
  • Base massiveness – insufficiently thick plate does not close the flux, causing part of the power to be lost into the air.
  • Material type – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
  • Surface finish – ideal contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
  • Thermal conditions – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate lowers the lifting capacity.

Warnings
Allergy Warning

A percentage of the population suffer from a contact allergy to nickel, which is the standard coating for neodymium magnets. Prolonged contact might lead to an allergic reaction. We recommend use safety gloves.

Safe operation

Exercise caution. Rare earth magnets act from a long distance and connect with massive power, often faster than you can move away.

Pacemakers

For implant holders: Powerful magnets affect medical devices. Keep minimum 30 cm distance or ask another person to handle the magnets.

No play value

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

Material brittleness

Protect your eyes. Magnets can fracture upon violent connection, ejecting shards into the air. Wear goggles.

Bone fractures

Watch your fingers. Two large magnets will snap together instantly with a force of massive weight, crushing everything in their path. Be careful!

Mechanical processing

Powder generated during grinding of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Thermal limits

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

Phone sensors

Be aware: neodymium magnets generate a field that disrupts sensitive sensors. Maintain a safe distance from your mobile, device, and GPS.

Threat to electronics

Equipment safety: Strong magnets can ruin payment cards and sensitive devices (heart implants, hearing aids, mechanical watches).

Attention! Learn more about hazards in the article: Magnet Safety Guide.