Strong neodymium magnets: discs and cylinders

Want to buy really powerful magnets? Our range includes complete range of disc, cylindrical and ring magnets. Perfect for for home use, workshop and model making. See products with fast shipping.

check full offer

Grips for seabed exploration

Start your adventure with treasure salvaging! Our specialized grips (F200, F400) provide grip certainty and huge lifting capacity. Stainless steel construction and strong lines will perform in rivers and lakes.

find searching equipment

Reliable threaded grips

Reliable solutions for mounting without drilling. Threaded grips (external or internal) provide instant organization of work on warehouses. They are indispensable mounting lighting, sensors and ads.

check available threads

🚀 Express processing: orders by 14:00 shipped immediately!

Dhit sp. z o.o.
Product available Ships today (order by 14:00)

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

bulk discounts:

Need more?

price from 1 pcs
14.10 ZŁ
17.34 ZŁ
price from 50 pcs
13.25 ZŁ
16.30 ZŁ
price from 180 pcs
12.41 ZŁ
15.26 ZŁ
Hunting for a discount?

Pick up the phone and ask +48 888 99 98 98 if you prefer get in touch via form the contact page.
Specifications as well as structure of magnets can be estimated on our modular calculator.

Same-day shipping for orders placed before 14:00.

Product card - 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

Physical modeling of the product - technical parameters

Presented data represent the result of a physical simulation. Results rely on models for the class Nd2Fe14B. Operational parameters may differ. Please consider these data as a reference point during assembly planning.

Table 1: Static force (pull vs distance) - interaction chart
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
critical level
1 mm 3321 Gs
332.1 mT
18.55 kg / 40.89 pounds
18548.8 g / 182.0 N
critical level
2 mm 3106 Gs
310.6 mT
16.23 kg / 35.77 pounds
16226.1 g / 159.2 N
critical level
3 mm 2883 Gs
288.3 mT
13.98 kg / 30.82 pounds
13978.2 g / 137.1 N
critical level
5 mm 2437 Gs
243.7 mT
9.99 kg / 22.02 pounds
9987.1 g / 98.0 N
warning
10 mm 1500 Gs
150.0 mT
3.78 kg / 8.34 pounds
3783.1 g / 37.1 N
warning
15 mm 905 Gs
90.5 mT
1.38 kg / 3.04 pounds
1379.2 g / 13.5 N
weak grip
20 mm 563 Gs
56.3 mT
0.53 kg / 1.17 pounds
532.4 g / 5.2 N
weak grip
30 mm 247 Gs
24.7 mT
0.10 kg / 0.23 pounds
102.4 g / 1.0 N
weak grip
50 mm 72 Gs
7.2 mT
0.01 kg / 0.02 pounds
8.7 g / 0.1 N
weak grip

Table 2: Shear force (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: Material efficiency (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: 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) - field range
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 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: Hazards (implants) - 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: Impact energy (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: Surface protection spec
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: 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. Vertical hold

*Warning: On a vertical surface, the magnet holds only approx. 20-30% of its perpendicular strength.

2. Steel thickness impact

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

3. Power loss vs temp

*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

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. 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
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%
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
Magnet pull force

Magnetic Induction

Check out more deals

The presented product is an extremely powerful rod magnet, composed of advanced NdFeB material, which, with dimensions of Ø29x10 mm, guarantees optimal power. The MW 29x10 / N38 model features a tolerance of ±0.1mm and industrial build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with significant force (approx. 20.82 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Furthermore, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It finds application 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 electronics 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 immediate cracking of this precision component. 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 popular standard for professional neodymium magnets, offering an optimal price-to-power ratio and operational stability. 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 warehouse.
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 secures it against oxidation, 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 through the diameter if your project requires it.

Pros and cons of neodymium magnets.

Strengths

Besides their immense field intensity, neodymium magnets offer the following advantages:
  • Their power is maintained, and after approximately 10 years it drops only by ~1% (theoretically),
  • They are extremely resistant to demagnetization induced by presence of other magnetic fields,
  • A magnet with a metallic gold surface has better aesthetics,
  • They show high magnetic induction at the operating surface, which increases their power,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to the possibility of accurate shaping and customization to custom needs, magnetic components can be produced in a wide range of forms and dimensions, which expands the range of possible applications,
  • Versatile presence in future technologies – they are used in mass storage devices, drive modules, medical devices, as well as industrial machines.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Disadvantages of NdFeB magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon strong 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 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
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in producing nuts and complicated forms in magnets, we propose using a housing - magnetic mechanism.
  • Possible danger to health – tiny shards of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Furthermore, small elements of these products can complicate diagnosis 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

Pull force analysis

Magnetic strength at its maximum – what it depends on?

The specified lifting capacity represents the maximum value, obtained under laboratory conditions, specifically:
  • using a base made of high-permeability steel, acting as a ideal flux conductor
  • with a cross-section no less than 10 mm
  • with a surface cleaned and smooth
  • with total lack of distance (without impurities)
  • under vertical force direction (90-degree angle)
  • at room temperature

Practical aspects of lifting capacity – factors

Holding efficiency impacted by working environment parameters, such as (from most important):
  • Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
  • Direction of force – maximum parameter is available only during pulling at a 90° angle. The force required to slide of the magnet along the surface is typically several times smaller (approx. 1/5 of the lifting capacity).
  • Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of generating force.
  • Steel grade – the best choice is pure iron steel. Stainless steels may attract less.
  • Surface structure – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
  • Temperature – temperature increase results in weakening of force. It is worth remembering the thermal limit for a given model.

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.

Safety rules for work with neodymium magnets
Metal Allergy

Nickel alert: The nickel-copper-nickel coating contains nickel. If redness occurs, immediately stop working with magnets and use protective gear.

ICD Warning

Patients with a pacemaker have to keep an safe separation from magnets. The magnetic field can stop the functioning of the life-saving device.

Demagnetization risk

Regular neodymium magnets (grade N) lose power when the temperature exceeds 80°C. Damage is permanent.

Caution required

Use magnets consciously. Their huge power can surprise even experienced users. Be vigilant and do not underestimate their power.

Cards and drives

Do not bring magnets close to a purse, laptop, or TV. The magnetism can irreversibly ruin these devices and erase data from cards.

Shattering risk

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.

Threat to navigation

An intense magnetic field disrupts the operation of compasses in phones and navigation systems. Maintain magnets close to a smartphone to prevent damaging the sensors.

Adults only

Only for adults. Small elements can be swallowed, leading to serious injuries. Keep out of reach of kids and pets.

Physical harm

Protect your hands. Two large magnets will snap together immediately with a force of massive weight, destroying everything in their path. Be careful!

Machining danger

Machining of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Important! Need more info? Read our article: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98