MW 100x10 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010001
GTIN/EAN: 5906301810018
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 ZŁ 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 | values |
|---|---|
| Cat. no. | 010001 |
| GTIN/EAN | 5906301810018 |
| Production/Distribution | Dhit sp. z o.o. |
| 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
| 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
| 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 |
|
2.04 kg / 4.50 LBS
2043.0 g / 20.0 N
|
| 1 mm |
|
5.11 kg / 11.26 LBS
5107.5 g / 50.1 N
|
| 2 mm |
|
10.22 kg / 22.52 LBS
10215.0 g / 100.2 N
|
| 3 mm |
|
15.32 kg / 33.78 LBS
15322.5 g / 150.3 N
|
| 5 mm |
|
25.54 kg / 56.30 LBS
25537.5 g / 250.5 N
|
| 10 mm |
|
40.86 kg / 90.08 LBS
40860.0 g / 400.8 N
|
| 11 mm |
|
40.86 kg / 90.08 LBS
40860.0 g / 400.8 N
|
| 12 mm |
|
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% |
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.
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 |
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Advantages and disadvantages of neodymium magnets.
Strengths
- 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
- 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 force – what contributes to it?
- 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
- 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.
