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MW 29x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010053

GTIN/EAN: 5906301810520

5.00
Load capacity 20.82 kg / 204.22 N Magnetic Induction 351.88 mT / 3519 Gs
Diameter Ø
29 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
49.54 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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Gross
price from 1 pcs
14.10 zł
17.34 zł
price from 50 pcs
13.25 zł
16.30 zł
price from 180 pcs
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15.26 zł

Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

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Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical data of the product - 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
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working 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 310 °C
Curie Temperature TF 590 °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 magnet - data

The following values constitute the result of a mathematical analysis. Results were calculated on algorithms for the material Nd2Fe14B. Real-world conditions might slightly differ. Treat these calculations as a preliminary roadmap when designing systems.

Table 1: Static force (pull 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 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: Vertical capacity (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) - 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 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 (substrate influence) - 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 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: Thermal stability (stability) - power drop
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: Magnet-Magnet interaction (attraction) - forces in the system
MW 29x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (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: Safety (HSE) (implants) - 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
Timepiece 20 Gs (2.0 mT) 8.5 cm
Mobile device 40 Gs (4.0 mT) 6.5 cm
Remote 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) - collision effects
MW 29x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 23.58 km/h
(6.55 m/s)
1.06 J
30 mm 25.55 km/h
(7.10 m/s)
1.25 J
50 mm 25.62 km/h
(7.12 m/s)
1.25 J
100 mm 25.63 km/h
(7.12 m/s)
1.26 J

Table 9: Corrosion resistance
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 (Flux)
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: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

1. Sliding resistance

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

2. Steel saturation

*Thin metal sheet (e.g. computer case) significantly reduces the holding force.

3. Heat tolerance

*For N38 grade, the safety limit 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

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: 010053-2026
Quick Unit Converter

Force (pull)


Field Strength

See more proposals

This product is an incredibly powerful rod magnet, composed of advanced NdFeB material, which, at dimensions of Ø29x10 mm, guarantees optimal power. This specific item features high dimensional repeatability and professional build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 20.82 kg), this product is available off-the-shelf from our European logistics center, ensuring rapid 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.
It finds application in DIY projects, 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 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., 29.1 mm) using two-component epoxy glues. 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.
Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. 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.
The presented product is a neodymium magnet with precisely defined parameters: diameter 29 mm and height 10 mm. 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 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 29 mm. 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 diametrically if your project requires it.

Strengths as well as weaknesses of Nd2Fe14B magnets.

Pros

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They have unchanged lifting capacity, and over more than ten years their attraction force decreases symbolically – ~1% (according to theory),
  • They retain their magnetic properties even under external field action,
  • In other words, due to the glossy finish of nickel, the element is aesthetically pleasing,
  • They are known for high magnetic induction at the operating surface, which improves attraction properties,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
  • Possibility of precise modeling and adjusting to specific needs,
  • Universal use in electronics industry – they are utilized in magnetic memories, electric drive systems, advanced medical instruments, and modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which makes them useful in small systems

Disadvantages

Characteristics of disadvantages of neodymium magnets and ways of using them
  • They are fragile 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 improves its resistance to damage
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • They oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of making threads in the magnet and complex shapes - preferred is cover - mounting mechanism.
  • Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. Additionally, small components of these devices can complicate diagnosis medical when they are in the body.
  • With mass production the cost of neodymium magnets is a challenge,

Lifting parameters

Maximum lifting force for a neodymium magnet – what contributes to it?

Breakaway force is the result of a measurement for optimal configuration, assuming:
  • using a plate made of mild steel, acting as a ideal flux conductor
  • whose transverse dimension equals approx. 10 mm
  • characterized by smoothness
  • under conditions of gap-free contact (surface-to-surface)
  • for force acting at a right angle (in the magnet axis)
  • in stable room temperature

Impact of factors on magnetic holding capacity in practice

Please note that the magnet holding may be lower subject to elements below, in order of importance:
  • Gap (between the magnet and the plate), because even a microscopic clearance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Metal type – different alloys reacts the same. High carbon content weaken the attraction effect.
  • Smoothness – full contact is obtained only on polished steel. Rough texture create air cushions, reducing force.
  • Temperature – heating the magnet results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.

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

Precautions when working with NdFeB magnets
Compass and GPS

Navigation devices and mobile phones are extremely susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Warning for heart patients

For implant holders: Strong magnetic fields disrupt medical devices. Keep at least 30 cm distance or request help to work with the magnets.

Powerful field

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

Shattering risk

Protect your eyes. Magnets can explode upon violent connection, launching sharp fragments into the air. We recommend safety glasses.

Heat warning

Keep cool. NdFeB magnets are susceptible to heat. If you require operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Choking Hazard

Strictly store magnets away from children. Choking hazard is high, and the consequences of magnets connecting inside the body are fatal.

Metal Allergy

Nickel alert: The nickel-copper-nickel coating consists of nickel. If redness appears, cease working with magnets and wear gloves.

Electronic hazard

Data protection: Neodymium magnets can damage data carriers and delicate electronics (pacemakers, medical aids, mechanical watches).

Crushing risk

Protect your hands. Two large magnets will join immediately with a force of massive weight, crushing anything in their path. Be careful!

Fire risk

Dust generated during machining of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Warning! Details about risks in the article: Safety of working with magnets.