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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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Physical properties - 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

Technical modeling of the magnet - report

The following information are the result of a engineering simulation. Values were calculated on models for the material Nd2Fe14B. Actual performance might slightly differ from theoretical values. Use these data as a preliminary roadmap when designing systems.

Table 1: Static pull force (force vs gap) - power drop
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
warning

Table 2: Slippage force (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: Wall mounting (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 (substrate influence) - power losses
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: Thermal stability (material behavior) - 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) - field range
MW 100x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding 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
Phone / Smartphone 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 (cracking risk) - 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: Corrosion resistance
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: Submerged application
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. Wall mount (shear)

*Caution: On a vertical wall, the magnet retains just ~20% of its perpendicular strength.

2. Steel saturation

*Thin steel (e.g. 0.5mm PC case) drastically weakens the holding force.

3. Temperature resistance

*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.

Engineering data and GPSR
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
Magnet pull force

Field Strength

Other proposals

This product is an exceptionally strong cylindrical magnet, composed of advanced NdFeB material, which, with dimensions of Ø100x10 mm, guarantees optimal power. This specific item boasts an accuracy of ±0.1mm and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a magnetic rod with impressive force (approx. 40.86 kg), this product is in stock from our warehouse in Poland, ensuring quick order fulfillment. Moreover, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
This model is perfect for building generators, advanced Hall effect sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 400.80 N with a weight of only 589.05 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 long-term durability 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 popular 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 in continuous sale in our warehouse.
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 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 through the diameter if your project requires it.

Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

Apart from their notable holding force, neodymium magnets have these key benefits:
  • They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (according to literature),
  • Magnets perfectly resist against demagnetization caused by ambient magnetic noise,
  • A magnet with a metallic nickel surface is more attractive,
  • Magnetic induction on the top side of the magnet is very high,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of custom forming as well as adjusting to individual requirements,
  • Wide application in future technologies – they are commonly used in data components, electromotive mechanisms, medical devices, also technologically advanced constructions.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Disadvantages of NdFeB magnets:
  • To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
  • Due to limitations in producing nuts and complicated forms in magnets, we propose using a housing - magnetic holder.
  • Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Additionally, small components of these products are able to be problematic in diagnostics medical after entering the body.
  • With budget limitations the cost of neodymium magnets is a challenge,

Lifting parameters

Maximum magnetic pulling forcewhat contributes to it?

The lifting capacity listed is a result of laboratory testing performed under the following configuration:
  • with the use of a sheet made of low-carbon steel, ensuring full magnetic saturation
  • possessing a massiveness of at least 10 mm to ensure full flux closure
  • characterized by smoothness
  • with zero gap (without paint)
  • for force acting at a right angle (in the magnet axis)
  • at room temperature

Lifting capacity in real conditions – factors

In real-world applications, the actual lifting capacity results from a number of factors, listed from crucial:
  • Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Steel type – mild steel attracts best. Higher carbon content reduce magnetic properties and lifting capacity.
  • Surface quality – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
  • Temperature – heating the magnet results in weakening of induction. Check the maximum operating temperature for a given model.

Lifting capacity testing was conducted on a smooth plate of suitable thickness, under perpendicular forces, however under parallel forces the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.

H&S for magnets
Warning for heart patients

Warning for patients: Powerful magnets affect medical devices. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Impact on smartphones

A powerful magnetic field negatively affects the functioning of compasses in smartphones and navigation systems. Keep magnets close to a smartphone to avoid damaging the sensors.

This is not a toy

Absolutely store magnets away from children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are very dangerous.

Operating temperature

Monitor thermal conditions. Exposing the magnet to high heat will destroy its magnetic structure and strength.

Do not drill into magnets

Mechanical processing of NdFeB material carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Magnets are brittle

Neodymium magnets are ceramic materials, meaning they are very brittle. Collision of two magnets will cause them shattering into small pieces.

Avoid contact if allergic

Certain individuals experience a hypersensitivity to Ni, which is the common plating for neodymium magnets. Frequent touching might lead to an allergic reaction. It is best to wear protective gloves.

Handling guide

Before starting, check safety instructions. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.

Serious injuries

Protect your hands. Two large magnets will join instantly with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

Keep away from computers

Device Safety: Neodymium magnets can ruin data carriers and delicate electronics (heart implants, hearing aids, mechanical watches).

Warning! Looking for details? Read our article: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98