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MW 100x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010001

GTIN/EAN: 5906301810018

5.00

Diameter Ø

100 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

589.05 g

Magnetization Direction

↑ axial

Load capacity

40.86 kg / 400.80 N

Magnetic Induction

121.59 mT / 1216 Gs

Coating

[NiCuNi] Nickel

368.50 with VAT / pcs + price for transport

299.59 ZŁ net + 23% VAT / pcs

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Technical details - MW 100x10 / N38 - cylindrical magnet

Specification / characteristics - MW 100x10 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010001
GTIN/EAN 5906301810018
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 100 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 589.05 g
Magnetization Direction ↑ axial
Load capacity ~ ? 40.86 kg / 400.80 N
Magnetic Induction ~ ? 121.59 mT / 1216 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 100x10 / 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 simulation of the magnet - technical parameters

Presented data represent the result of a engineering calculation. Results are based on models for the class Nd2Fe14B. Actual conditions might slightly differ. Use these data as a reference point when designing systems.

Table 1: Static force (pull vs distance) - interaction chart
MW 100x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1216 Gs
121.6 mT
40.86 kg / 90.08 LBS
40860.0 g / 400.8 N
crushing
1 mm 1208 Gs
120.8 mT
40.35 kg / 88.95 LBS
40345.4 g / 395.8 N
crushing
2 mm 1199 Gs
119.9 mT
39.74 kg / 87.62 LBS
39742.7 g / 389.9 N
crushing
3 mm 1189 Gs
118.9 mT
39.06 kg / 86.12 LBS
39062.0 g / 383.2 N
crushing
5 mm 1165 Gs
116.5 mT
37.49 kg / 82.65 LBS
37490.2 g / 367.8 N
crushing
10 mm 1087 Gs
108.7 mT
32.64 kg / 71.96 LBS
32640.7 g / 320.2 N
crushing
15 mm 991 Gs
99.1 mT
27.15 kg / 59.86 LBS
27153.9 g / 266.4 N
crushing
20 mm 887 Gs
88.7 mT
21.76 kg / 47.97 LBS
21758.7 g / 213.5 N
crushing
30 mm 683 Gs
68.3 mT
12.90 kg / 28.45 LBS
12902.7 g / 126.6 N
crushing
50 mm 379 Gs
37.9 mT
3.97 kg / 8.75 LBS
3968.4 g / 38.9 N
strong

Table 2: Vertical load (wall)
MW 100x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 8.17 kg / 18.02 LBS
8172.0 g / 80.2 N
1 mm Stal (~0.2) 8.07 kg / 17.79 LBS
8070.0 g / 79.2 N
2 mm Stal (~0.2) 7.95 kg / 17.52 LBS
7948.0 g / 78.0 N
3 mm Stal (~0.2) 7.81 kg / 17.22 LBS
7812.0 g / 76.6 N
5 mm Stal (~0.2) 7.50 kg / 16.53 LBS
7498.0 g / 73.6 N
10 mm Stal (~0.2) 6.53 kg / 14.39 LBS
6528.0 g / 64.0 N
15 mm Stal (~0.2) 5.43 kg / 11.97 LBS
5430.0 g / 53.3 N
20 mm Stal (~0.2) 4.35 kg / 9.59 LBS
4352.0 g / 42.7 N
30 mm Stal (~0.2) 2.58 kg / 5.69 LBS
2580.0 g / 25.3 N
50 mm Stal (~0.2) 0.79 kg / 1.75 LBS
794.0 g / 7.8 N

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 100x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
12.26 kg / 27.02 LBS
12258.0 g / 120.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
8.17 kg / 18.02 LBS
8172.0 g / 80.2 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
4.09 kg / 9.01 LBS
4086.0 g / 40.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
20.43 kg / 45.04 LBS
20430.0 g / 200.4 N

Table 4: Steel thickness (saturation) - sheet metal selection
MW 100x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
2.04 kg / 4.50 LBS
2043.0 g / 20.0 N
1 mm
13%
5.11 kg / 11.26 LBS
5107.5 g / 50.1 N
2 mm
25%
10.22 kg / 22.52 LBS
10215.0 g / 100.2 N
3 mm
38%
15.32 kg / 33.78 LBS
15322.5 g / 150.3 N
5 mm
63%
25.54 kg / 56.30 LBS
25537.5 g / 250.5 N
10 mm
100%
40.86 kg / 90.08 LBS
40860.0 g / 400.8 N
11 mm
100%
40.86 kg / 90.08 LBS
40860.0 g / 400.8 N
12 mm
100%
40.86 kg / 90.08 LBS
40860.0 g / 400.8 N

Table 5: Working in heat (stability) - power drop
MW 100x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 40.86 kg / 90.08 LBS
40860.0 g / 400.8 N
OK
40 °C -2.2% 39.96 kg / 88.10 LBS
39961.1 g / 392.0 N
OK
60 °C -4.4% 39.06 kg / 86.12 LBS
39062.2 g / 383.2 N
80 °C -6.6% 38.16 kg / 84.14 LBS
38163.2 g / 374.4 N
100 °C -28.8% 29.09 kg / 64.14 LBS
29092.3 g / 285.4 N

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 100x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 71.58 kg / 157.80 LBS
2 302 Gs
10.74 kg / 23.67 LBS
10737 g / 105.3 N
N/A
1 mm 71.15 kg / 156.86 LBS
2 424 Gs
10.67 kg / 23.53 LBS
10673 g / 104.7 N
64.04 kg / 141.17 LBS
~0 Gs
2 mm 70.68 kg / 155.82 LBS
2 416 Gs
10.60 kg / 23.37 LBS
10602 g / 104.0 N
63.61 kg / 140.23 LBS
~0 Gs
3 mm 70.17 kg / 154.69 LBS
2 408 Gs
10.53 kg / 23.20 LBS
10525 g / 103.3 N
63.15 kg / 139.22 LBS
~0 Gs
5 mm 69.04 kg / 152.21 LBS
2 388 Gs
10.36 kg / 22.83 LBS
10356 g / 101.6 N
62.14 kg / 136.99 LBS
~0 Gs
10 mm 65.68 kg / 144.79 LBS
2 329 Gs
9.85 kg / 21.72 LBS
9851 g / 96.6 N
59.11 kg / 130.31 LBS
~0 Gs
20 mm 57.18 kg / 126.06 LBS
2 173 Gs
8.58 kg / 18.91 LBS
8577 g / 84.1 N
51.46 kg / 113.45 LBS
~0 Gs
50 mm 29.67 kg / 65.40 LBS
1 565 Gs
4.45 kg / 9.81 LBS
4450 g / 43.7 N
26.70 kg / 58.86 LBS
~0 Gs
60 mm 22.60 kg / 49.83 LBS
1 366 Gs
3.39 kg / 7.47 LBS
3390 g / 33.3 N
20.34 kg / 44.85 LBS
~0 Gs
70 mm 16.98 kg / 37.43 LBS
1 184 Gs
2.55 kg / 5.61 LBS
2546 g / 25.0 N
15.28 kg / 33.68 LBS
~0 Gs
80 mm 12.64 kg / 27.87 LBS
1 022 Gs
1.90 kg / 4.18 LBS
1896 g / 18.6 N
11.38 kg / 25.08 LBS
~0 Gs
90 mm 9.38 kg / 20.67 LBS
880 Gs
1.41 kg / 3.10 LBS
1406 g / 13.8 N
8.44 kg / 18.60 LBS
~0 Gs
100 mm 6.95 kg / 15.33 LBS
758 Gs
1.04 kg / 2.30 LBS
1043 g / 10.2 N
6.26 kg / 13.79 LBS
~0 Gs

Table 7: Protective zones (implants) - warnings
MW 100x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 31.0 cm
Hearing aid 10 Gs (1.0 mT) 24.0 cm
Mechanical watch 20 Gs (2.0 mT) 19.0 cm
Mobile device 40 Gs (4.0 mT) 14.5 cm
Remote 50 Gs (5.0 mT) 13.5 cm
Payment card 400 Gs (40.0 mT) 5.0 cm
HDD hard drive 600 Gs (60.0 mT) 3.5 cm

Table 8: Collisions (cracking risk) - collision effects
MW 100x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 11.87 km/h
(3.30 m/s)
3.20 J
30 mm 17.18 km/h
(4.77 m/s)
6.71 J
50 mm 19.89 km/h
(5.52 m/s)
8.99 J
100 mm 26.67 km/h
(7.41 m/s)
16.17 J

Table 9: Surface protection spec
MW 100x10 / 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 100x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 125 951 Mx 1259.5 µWb
Pc Coefficient 0.16 Low (Flat)

Table 11: Hydrostatics and buoyancy
MW 100x10 / N38

Environment Effective steel pull Effect
Air (land) 40.86 kg Standard
Water (riverbed) 46.78 kg
(+5.92 kg buoyancy gain)
+14.5%
Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Wall mount (shear)

*Caution: On a vertical wall, the magnet retains merely a fraction of its max power.

2. Plate thickness effect

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

3. Power loss vs temp

*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) = 0.16

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
Material specification
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: 010001-2026
Magnet Unit Converter
Force (pull)

Magnetic Induction

See more proposals

The presented product is an extremely powerful rod magnet, composed of modern NdFeB material, which, at dimensions of Ø100x10 mm, guarantees optimal power. This specific item features an accuracy of ±0.1mm and industrial build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 40.86 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 400.80 N with a weight of only 589.05 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.
Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Magnets N38 are strong enough for 90% 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 (Ø100x10), 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 Ø100x10 mm, which, at a weight of 589.05 g, makes it an element with impressive magnetic energy density. The value of 400.80 N means that the magnet is capable of holding a weight many times exceeding its own mass of 589.05 g. The product has a [NiCuNi] coating, which protects the surface 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 100 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 neodymium magnets.

Strengths

Besides their exceptional field intensity, neodymium magnets offer the following advantages:
  • They have constant strength, and over nearly ten years their performance decreases symbolically – ~1% (according to theory),
  • Neodymium magnets remain remarkably resistant to magnetic field loss caused by external magnetic fields,
  • Thanks to the glossy finish, the surface of Ni-Cu-Ni, gold, or silver gives an aesthetic appearance,
  • Neodymium magnets achieve maximum magnetic induction on a contact point, which ensures high operational effectiveness,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to modularity in forming and the capacity to modify to individual projects,
  • Huge importance in modern industrial fields – they find application in mass storage devices, brushless drives, diagnostic systems, also complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which makes them useful in compact constructions

Limitations

Drawbacks and weaknesses of neodymium magnets: application proposals
  • To avoid cracks under impact, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
  • Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
  • Due to limitations in realizing threads and complex shapes in magnets, we recommend using a housing - magnetic mount.
  • Health risk to health – tiny shards of magnets pose a threat, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, tiny parts of these magnets are able to be problematic in diagnostics medical when they are in the body.
  • With large orders the cost of neodymium magnets is a challenge,

Lifting parameters

Highest magnetic holding forcewhat contributes to it?

The lifting capacity listed is a measurement result executed under standard conditions:
  • on a base made of mild steel, optimally conducting the magnetic flux
  • with a thickness minimum 10 mm
  • with an ground contact surface
  • without the slightest insulating layer between the magnet and steel
  • under vertical application of breakaway force (90-degree angle)
  • at ambient temperature room level

Lifting capacity in real conditions – factors

It is worth knowing that the application force will differ influenced by elements below, starting with the most relevant:
  • Distance – existence of any layer (rust, dirt, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
  • Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Material type – the best choice is high-permeability steel. Cast iron may attract less.
  • Surface structure – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Temperature – temperature increase results in weakening of induction. Check the thermal limit for a given model.

Lifting capacity was measured by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under shearing force the load capacity is reduced by as much as fivefold. In addition, even a small distance between the magnet’s surface and the plate lowers the lifting capacity.

Precautions when working with neodymium magnets
Electronic hazard

Powerful magnetic fields can erase data on payment cards, HDDs, and storage devices. Keep a distance of at least 10 cm.

Choking Hazard

Always store magnets away from children. Ingestion danger is significant, and the consequences of magnets connecting inside the body are fatal.

Powerful field

Use magnets consciously. Their huge power can surprise even experienced users. Stay alert and respect their power.

Power loss in heat

Standard neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. Damage is permanent.

Fire warning

Fire hazard: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.

Finger safety

Large magnets can smash fingers instantly. Do not put your hand betwixt two strong magnets.

Avoid contact if allergic

Medical facts indicate that the nickel plating (the usual finish) is a common allergen. If your skin reacts to metals, prevent direct skin contact or select versions in plastic housing.

Magnets are brittle

Neodymium magnets are ceramic materials, meaning they are prone to chipping. Collision of two magnets leads to them breaking into small pieces.

Magnetic interference

An intense magnetic field negatively affects the operation of compasses in phones and navigation systems. Do not bring magnets near a device to prevent breaking the sensors.

Health Danger

Patients with a pacemaker have to maintain an large gap from magnets. The magnetic field can stop the operation of the life-saving device.

Danger! More info about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98