MW 70x60 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010098
GTIN/EAN: 5906301810971
Diameter Ø
70 mm [±0,1 mm]
Height
60 mm [±0,1 mm]
Weight
1731.8 g
Magnetization Direction
↑ axial
Load capacity
163.93 kg / 1608.16 N
Magnetic Induction
535.45 mT / 5354 Gs
Coating
[NiCuNi] Nickel
630.01 ZŁ with VAT / pcs + price for transport
512.20 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Give us a call
+48 22 499 98 98
alternatively drop us a message through
our online form
the contact page.
Parameters and structure of a magnet can be verified on our
online calculation tool.
Same-day shipping for orders placed before 14:00.
Physical properties - MW 70x60 / N38 - cylindrical magnet
Specification / characteristics - MW 70x60 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010098 |
| GTIN/EAN | 5906301810971 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 70 mm [±0,1 mm] |
| Height | 60 mm [±0,1 mm] |
| Weight | 1731.8 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 163.93 kg / 1608.16 N |
| Magnetic Induction ~ ? | 535.45 mT / 5354 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 modeling of the assembly - technical parameters
Presented values represent the result of a engineering simulation. Results were calculated on algorithms for the material Nd2Fe14B. Actual parameters might slightly differ. Please consider these data as a supplementary guide when designing systems.
Table 1: Static force (pull vs distance) - interaction chart
MW 70x60 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
5354 Gs
535.4 mT
|
163.93 kg / 361.40 LBS
163930.0 g / 1608.2 N
|
dangerous! |
| 1 mm |
5201 Gs
520.1 mT
|
154.68 kg / 341.01 LBS
154677.8 g / 1517.4 N
|
dangerous! |
| 2 mm |
5045 Gs
504.5 mT
|
145.58 kg / 320.96 LBS
145583.5 g / 1428.2 N
|
dangerous! |
| 3 mm |
4890 Gs
489.0 mT
|
136.77 kg / 301.52 LBS
136769.5 g / 1341.7 N
|
dangerous! |
| 5 mm |
4582 Gs
458.2 mT
|
120.07 kg / 264.72 LBS
120074.6 g / 1177.9 N
|
dangerous! |
| 10 mm |
3842 Gs
384.2 mT
|
84.43 kg / 186.13 LBS
84425.8 g / 828.2 N
|
dangerous! |
| 15 mm |
3176 Gs
317.6 mT
|
57.69 kg / 127.18 LBS
57688.8 g / 565.9 N
|
dangerous! |
| 20 mm |
2604 Gs
260.4 mT
|
38.78 kg / 85.50 LBS
38782.9 g / 380.5 N
|
dangerous! |
| 30 mm |
1744 Gs
174.4 mT
|
17.39 kg / 38.33 LBS
17385.0 g / 170.5 N
|
dangerous! |
| 50 mm |
829 Gs
82.9 mT
|
3.93 kg / 8.66 LBS
3929.4 g / 38.5 N
|
warning |
Table 2: Vertical capacity (wall)
MW 70x60 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
32.79 kg / 72.28 LBS
32786.0 g / 321.6 N
|
| 1 mm | Stal (~0.2) |
30.94 kg / 68.20 LBS
30936.0 g / 303.5 N
|
| 2 mm | Stal (~0.2) |
29.12 kg / 64.19 LBS
29116.0 g / 285.6 N
|
| 3 mm | Stal (~0.2) |
27.35 kg / 60.31 LBS
27354.0 g / 268.3 N
|
| 5 mm | Stal (~0.2) |
24.01 kg / 52.94 LBS
24014.0 g / 235.6 N
|
| 10 mm | Stal (~0.2) |
16.89 kg / 37.23 LBS
16886.0 g / 165.7 N
|
| 15 mm | Stal (~0.2) |
11.54 kg / 25.44 LBS
11538.0 g / 113.2 N
|
| 20 mm | Stal (~0.2) |
7.76 kg / 17.10 LBS
7756.0 g / 76.1 N
|
| 30 mm | Stal (~0.2) |
3.48 kg / 7.67 LBS
3478.0 g / 34.1 N
|
| 50 mm | Stal (~0.2) |
0.79 kg / 1.73 LBS
786.0 g / 7.7 N
|
Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 70x60 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
49.18 kg / 108.42 LBS
49179.0 g / 482.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
32.79 kg / 72.28 LBS
32786.0 g / 321.6 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
16.39 kg / 36.14 LBS
16393.0 g / 160.8 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
81.97 kg / 180.70 LBS
81965.0 g / 804.1 N
|
Table 4: Steel thickness (substrate influence) - power losses
MW 70x60 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
5.46 kg / 12.05 LBS
5464.3 g / 53.6 N
|
| 1 mm |
|
13.66 kg / 30.12 LBS
13660.8 g / 134.0 N
|
| 2 mm |
|
27.32 kg / 60.23 LBS
27321.7 g / 268.0 N
|
| 3 mm |
|
40.98 kg / 90.35 LBS
40982.5 g / 402.0 N
|
| 5 mm |
|
68.30 kg / 150.58 LBS
68304.2 g / 670.1 N
|
| 10 mm |
|
136.61 kg / 301.17 LBS
136608.3 g / 1340.1 N
|
| 11 mm |
|
150.27 kg / 331.29 LBS
150269.2 g / 1474.1 N
|
| 12 mm |
|
163.93 kg / 361.40 LBS
163930.0 g / 1608.2 N
|
Table 5: Working in heat (stability) - resistance threshold
MW 70x60 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
163.93 kg / 361.40 LBS
163930.0 g / 1608.2 N
|
OK |
| 40 °C | -2.2% |
160.32 kg / 353.45 LBS
160323.5 g / 1572.8 N
|
OK |
| 60 °C | -4.4% |
156.72 kg / 345.50 LBS
156717.1 g / 1537.4 N
|
OK |
| 80 °C | -6.6% |
153.11 kg / 337.55 LBS
153110.6 g / 1502.0 N
|
|
| 100 °C | -28.8% |
116.72 kg / 257.32 LBS
116718.2 g / 1145.0 N
|
Table 6: Magnet-Magnet interaction (attraction) - field range
MW 70x60 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
680.08 kg / 1499.31 LBS
5 950 Gs
|
102.01 kg / 224.90 LBS
102012 g / 1000.7 N
|
N/A |
| 1 mm |
660.96 kg / 1457.16 LBS
10 556 Gs
|
99.14 kg / 218.57 LBS
99144 g / 972.6 N
|
594.86 kg / 1311.45 LBS
~0 Gs
|
| 2 mm |
641.69 kg / 1414.69 LBS
10 401 Gs
|
96.25 kg / 212.20 LBS
96254 g / 944.3 N
|
577.52 kg / 1273.22 LBS
~0 Gs
|
| 3 mm |
622.69 kg / 1372.80 LBS
10 246 Gs
|
93.40 kg / 205.92 LBS
93404 g / 916.3 N
|
560.42 kg / 1235.52 LBS
~0 Gs
|
| 5 mm |
585.53 kg / 1290.87 LBS
9 936 Gs
|
87.83 kg / 193.63 LBS
87830 g / 861.6 N
|
526.98 kg / 1161.79 LBS
~0 Gs
|
| 10 mm |
498.14 kg / 1098.21 LBS
9 164 Gs
|
74.72 kg / 164.73 LBS
74721 g / 733.0 N
|
448.33 kg / 988.39 LBS
~0 Gs
|
| 20 mm |
350.25 kg / 772.16 LBS
7 684 Gs
|
52.54 kg / 115.82 LBS
52537 g / 515.4 N
|
315.22 kg / 694.95 LBS
~0 Gs
|
| 50 mm |
107.57 kg / 237.16 LBS
4 259 Gs
|
16.14 kg / 35.57 LBS
16136 g / 158.3 N
|
96.82 kg / 213.44 LBS
~0 Gs
|
| 60 mm |
72.12 kg / 159.00 LBS
3 487 Gs
|
10.82 kg / 23.85 LBS
10818 g / 106.1 N
|
64.91 kg / 143.10 LBS
~0 Gs
|
| 70 mm |
48.77 kg / 107.51 LBS
2 867 Gs
|
7.31 kg / 16.13 LBS
7315 g / 71.8 N
|
43.89 kg / 96.76 LBS
~0 Gs
|
| 80 mm |
33.37 kg / 73.57 LBS
2 372 Gs
|
5.01 kg / 11.04 LBS
5005 g / 49.1 N
|
30.03 kg / 66.21 LBS
~0 Gs
|
| 90 mm |
23.15 kg / 51.04 LBS
1 976 Gs
|
3.47 kg / 7.66 LBS
3473 g / 34.1 N
|
20.84 kg / 45.94 LBS
~0 Gs
|
| 100 mm |
16.30 kg / 35.94 LBS
1 658 Gs
|
2.45 kg / 5.39 LBS
2445 g / 24.0 N
|
14.67 kg / 32.34 LBS
~0 Gs
|
Table 7: Protective zones (implants) - precautionary measures
MW 70x60 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 42.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 33.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 25.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 19.5 cm |
| Remote | 50 Gs (5.0 mT) | 18.0 cm |
| Payment card | 400 Gs (40.0 mT) | 7.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 6.0 cm |
Table 8: Collisions (cracking risk) - collision effects
MW 70x60 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
12.58 km/h
(3.49 m/s)
|
10.57 J | |
| 30 mm |
18.09 km/h
(5.02 m/s)
|
21.86 J | |
| 50 mm |
22.27 km/h
(6.19 m/s)
|
33.13 J | |
| 100 mm |
31.06 km/h
(8.63 m/s)
|
64.44 J |
Table 9: Corrosion resistance
MW 70x60 / 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 (Flux)
MW 70x60 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 209 626 Mx | 2096.3 µWb |
| Pc Coefficient | 0.82 | High (Stable) |
Table 11: Hydrostatics and buoyancy
MW 70x60 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 163.93 kg | Standard |
| Water (riverbed) |
187.70 kg
(+23.77 kg buoyancy gain)
|
+14.5% |
1. Wall mount (shear)
*Caution: On a vertical wall, the magnet holds just a fraction of its nominal pull.
2. Steel thickness impact
*Thin metal sheet (e.g. 0.5mm PC case) drastically weakens the holding force.
3. Heat tolerance
*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) = 0.82
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other offers
Pros as well as cons of Nd2Fe14B magnets.
Advantages
- They have stable power, and over around ten years their attraction force decreases symbolically – ~1% (in testing),
- They have excellent resistance to magnetic field loss as a result of external fields,
- A magnet with a shiny silver surface has an effective appearance,
- They feature high magnetic induction at the operating surface, making them more effective,
- Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to freedom in shaping and the ability to modify to individual projects,
- Wide application in modern industrial fields – they find application in data components, drive modules, medical devices, as well as modern systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Weaknesses
- To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
- Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
- Due to limitations in creating threads and complex shapes in magnets, we recommend using casing - magnetic mount.
- Potential hazard related to microscopic parts of magnets pose a threat, if swallowed, which gains importance in the context of child safety. Furthermore, small components of these magnets can disrupt the diagnostic process medical in case of swallowing.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities
Lifting parameters
Maximum holding power of the magnet – what contributes to it?
- using a plate made of high-permeability steel, serving as a ideal flux conductor
- with a cross-section minimum 10 mm
- with a surface perfectly flat
- without the slightest air gap between the magnet and steel
- for force applied at a right angle (pull-off, not shear)
- in stable room temperature
Impact of factors on magnetic holding capacity in practice
- Clearance – the presence of any layer (paint, dirt, gap) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
- Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Material type – the best choice is pure iron steel. Hardened steels may generate lower lifting capacity.
- Plate texture – smooth surfaces ensure maximum contact, which increases force. Uneven metal reduce efficiency.
- Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).
Lifting capacity was determined using a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, however under shearing force the load capacity is reduced by as much as fivefold. Moreover, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.
Safety rules for work with NdFeB magnets
Bone fractures
Protect your hands. Two large magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Be careful!
GPS and phone interference
A strong magnetic field interferes with the functioning of magnetometers in phones and GPS navigation. Keep magnets close to a device to prevent breaking the sensors.
Fire risk
Mechanical processing of neodymium magnets poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.
Protective goggles
NdFeB magnets are sintered ceramics, meaning they are very brittle. Impact of two magnets leads to them breaking into shards.
Adults only
Neodymium magnets are not intended for children. Swallowing several magnets may result in them attracting across intestines, which poses a direct threat to life and requires urgent medical intervention.
Implant safety
Warning for patients: Strong magnetic fields affect medical devices. Keep minimum 30 cm distance or ask another person to work with the magnets.
Do not underestimate power
Exercise caution. Neodymium magnets act from a long distance and connect with huge force, often faster than you can move away.
Thermal limits
Control the heat. Heating the magnet above 80 degrees Celsius will ruin its properties and strength.
Protect data
Very strong magnetic fields can corrupt files on credit cards, hard drives, and other magnetic media. Maintain a gap of at least 10 cm.
Skin irritation risks
Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If skin irritation appears, cease handling magnets and use protective gear.
