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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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Product card - 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 analysis of the assembly - data

The following information constitute the outcome of a engineering simulation. Values are based on models for the material Nd2Fe14B. Actual parameters might slightly deviate from the simulation results. Use these data as a supplementary guide when designing systems.

Table 1: Static pull force (force vs gap) - characteristics
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
dangerous!
1 mm 1208 Gs
120.8 mT
40.35 kg / 88.95 lbs
40345.4 g / 395.8 N
dangerous!
2 mm 1199 Gs
119.9 mT
39.74 kg / 87.62 lbs
39742.7 g / 389.9 N
dangerous!
3 mm 1189 Gs
118.9 mT
39.06 kg / 86.12 lbs
39062.0 g / 383.2 N
dangerous!
5 mm 1165 Gs
116.5 mT
37.49 kg / 82.65 lbs
37490.2 g / 367.8 N
dangerous!
10 mm 1087 Gs
108.7 mT
32.64 kg / 71.96 lbs
32640.7 g / 320.2 N
dangerous!
15 mm 991 Gs
99.1 mT
27.15 kg / 59.86 lbs
27153.9 g / 266.4 N
dangerous!
20 mm 887 Gs
88.7 mT
21.76 kg / 47.97 lbs
21758.7 g / 213.5 N
dangerous!
30 mm 683 Gs
68.3 mT
12.90 kg / 28.45 lbs
12902.7 g / 126.6 N
dangerous!
50 mm 379 Gs
37.9 mT
3.97 kg / 8.75 lbs
3968.4 g / 38.9 N
strong

Table 2: Vertical capacity (vertical surface)
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 (shearing) - vertical pull
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: Material efficiency (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) - resistance threshold
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: Two magnets (attraction) - 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: Safety (HSE) (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: Dynamics (kinetic energy) - warning
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: Coating parameters (durability)
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: Construction data (Flux)
MW 100x10 / N38

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

Table 11: Physics of underwater searching
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%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Sliding resistance

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

2. Steel thickness impact

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

3. Thermal stability

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.16

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
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%
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: 010001-2026
Measurement Calculator
Magnet pull force

Magnetic Field

Check out also offers

This product is an incredibly powerful rod magnet, composed of durable NdFeB material, which, at dimensions of Ø100x10 mm, guarantees maximum efficiency. This specific item boasts a tolerance of ±0.1mm and industrial build quality, making it a perfect 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 European logistics center, ensuring lightning-fast order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a fastening 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.
Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 100.1 mm) using two-component epoxy glues. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering a great economic balance and operational stability. If you need the strongest magnets in the same volume (Ø100x10), 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 100 mm and height 10 mm. 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 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 100 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.

Strengths

Apart from their strong holding force, neodymium magnets have these key benefits:
  • They have stable power, and over nearly ten years their performance decreases symbolically – ~1% (according to theory),
  • They are noted for resistance to demagnetization induced by external field influence,
  • By using a shiny coating of gold, the element acquires an elegant look,
  • They show high magnetic induction at the operating surface, making them more effective,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
  • Possibility of detailed shaping as well as adjusting to atypical requirements,
  • Fundamental importance in innovative solutions – they are commonly used in computer drives, drive modules, advanced medical instruments, and industrial machines.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Weaknesses

Problematic aspects of neodymium magnets and ways of using them
  • Brittleness is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a strong case, which not only protects them against impacts but also raises their durability
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore during using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in producing threads and complex forms in magnets, we propose using cover - magnetic mechanism.
  • Possible danger related to microscopic parts of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child health protection. Furthermore, small elements of these products can disrupt the diagnostic process medical after entering the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

Detachment force of the magnet in optimal conditionswhat it depends on?

The lifting capacity listed is a measurement result executed under standard conditions:
  • using a base made of high-permeability steel, functioning as a ideal flux conductor
  • with a thickness no less than 10 mm
  • with a plane free of scratches
  • without the slightest clearance between the magnet and steel
  • under vertical force vector (90-degree angle)
  • in neutral thermal conditions

Key elements affecting lifting force

It is worth knowing that the magnet holding may be lower subject to elements below, in order of importance:
  • Gap between magnet and steel – every millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Base massiveness – insufficiently thick plate does not close the flux, causing part of the flux to be escaped into the air.
  • Steel type – low-carbon steel gives the best results. Alloy admixtures reduce magnetic permeability and lifting capacity.
  • Surface finish – ideal contact is possible only on smooth steel. Rough texture create air cushions, reducing force.
  • Heat – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity was measured using a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, 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 holding force.

H&S for magnets
Thermal limits

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and strength.

Medical implants

People with a heart stimulator have to maintain an safe separation from magnets. The magnetism can stop the functioning of the implant.

Handling rules

Handle magnets with awareness. Their immense force can shock even experienced users. Be vigilant and respect their power.

Keep away from electronics

Navigation devices and smartphones are highly susceptible to magnetic fields. Direct contact with a strong magnet can permanently damage the sensors in your phone.

Risk of cracking

Watch out for shards. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. We recommend safety glasses.

Allergic reactions

Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If an allergic reaction appears, cease handling magnets and wear gloves.

Pinching danger

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

Dust explosion hazard

Fire hazard: Neodymium dust is explosive. Do not process magnets without safety gear as this may cause fire.

Safe distance

Intense magnetic fields can erase data on payment cards, hard drives, and storage devices. Maintain a gap of min. 10 cm.

Swallowing risk

Absolutely store magnets out of reach of children. Risk of swallowing is significant, and the consequences of magnets clamping inside the body are life-threatening.

Security! Details about risks in the article: Magnet Safety Guide.