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MW 70x60 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010098

GTIN/EAN: 5906301810971

5.00

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 with VAT / pcs + price for transport

512.20 ZŁ net + 23% VAT / pcs

bulk discounts:

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price from 1 pcs
512.20 ZŁ
630.01 ZŁ
price from 5 pcs
450.74 ZŁ
554.41 ZŁ
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Parameters along with structure of neodymium magnets can be tested on our magnetic mass calculator.

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Physical properties - MW 70x60 / N38 - cylindrical magnet

Specification / characteristics - MW 70x60 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010098
GTIN/EAN 5906301810971
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 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

Specification / characteristics MW 70x60 / 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 simulation of the assembly - technical parameters

These data represent the direct effect of a physical calculation. Values were calculated on models for the class Nd2Fe14B. Operational conditions may differ. Please consider these calculations as a supplementary guide when designing systems.

Table 1: Static pull force (force vs distance) - power drop
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 pounds
163930.0 g / 1608.2 N
critical level
1 mm 5201 Gs
520.1 mT
154.68 kg / 341.01 pounds
154677.8 g / 1517.4 N
critical level
2 mm 5045 Gs
504.5 mT
145.58 kg / 320.96 pounds
145583.5 g / 1428.2 N
critical level
3 mm 4890 Gs
489.0 mT
136.77 kg / 301.52 pounds
136769.5 g / 1341.7 N
critical level
5 mm 4582 Gs
458.2 mT
120.07 kg / 264.72 pounds
120074.6 g / 1177.9 N
critical level
10 mm 3842 Gs
384.2 mT
84.43 kg / 186.13 pounds
84425.8 g / 828.2 N
critical level
15 mm 3176 Gs
317.6 mT
57.69 kg / 127.18 pounds
57688.8 g / 565.9 N
critical level
20 mm 2604 Gs
260.4 mT
38.78 kg / 85.50 pounds
38782.9 g / 380.5 N
critical level
30 mm 1744 Gs
174.4 mT
17.39 kg / 38.33 pounds
17385.0 g / 170.5 N
critical level
50 mm 829 Gs
82.9 mT
3.93 kg / 8.66 pounds
3929.4 g / 38.5 N
warning

Table 2: Sliding force (wall)
MW 70x60 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 32.79 kg / 72.28 pounds
32786.0 g / 321.6 N
1 mm Stal (~0.2) 30.94 kg / 68.20 pounds
30936.0 g / 303.5 N
2 mm Stal (~0.2) 29.12 kg / 64.19 pounds
29116.0 g / 285.6 N
3 mm Stal (~0.2) 27.35 kg / 60.31 pounds
27354.0 g / 268.3 N
5 mm Stal (~0.2) 24.01 kg / 52.94 pounds
24014.0 g / 235.6 N
10 mm Stal (~0.2) 16.89 kg / 37.23 pounds
16886.0 g / 165.7 N
15 mm Stal (~0.2) 11.54 kg / 25.44 pounds
11538.0 g / 113.2 N
20 mm Stal (~0.2) 7.76 kg / 17.10 pounds
7756.0 g / 76.1 N
30 mm Stal (~0.2) 3.48 kg / 7.67 pounds
3478.0 g / 34.1 N
50 mm Stal (~0.2) 0.79 kg / 1.73 pounds
786.0 g / 7.7 N

Table 3: Vertical assembly (shearing) - 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 pounds
49179.0 g / 482.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
32.79 kg / 72.28 pounds
32786.0 g / 321.6 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
16.39 kg / 36.14 pounds
16393.0 g / 160.8 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
81.97 kg / 180.70 pounds
81965.0 g / 804.1 N

Table 4: Steel thickness (saturation) - sheet metal selection
MW 70x60 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
3%
5.46 kg / 12.05 pounds
5464.3 g / 53.6 N
1 mm
8%
13.66 kg / 30.12 pounds
13660.8 g / 134.0 N
2 mm
17%
27.32 kg / 60.23 pounds
27321.7 g / 268.0 N
3 mm
25%
40.98 kg / 90.35 pounds
40982.5 g / 402.0 N
5 mm
42%
68.30 kg / 150.58 pounds
68304.2 g / 670.1 N
10 mm
83%
136.61 kg / 301.17 pounds
136608.3 g / 1340.1 N
11 mm
92%
150.27 kg / 331.29 pounds
150269.2 g / 1474.1 N
12 mm
100%
163.93 kg / 361.40 pounds
163930.0 g / 1608.2 N

Table 5: Thermal stability (material behavior) - 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 pounds
163930.0 g / 1608.2 N
OK
40 °C -2.2% 160.32 kg / 353.45 pounds
160323.5 g / 1572.8 N
OK
60 °C -4.4% 156.72 kg / 345.50 pounds
156717.1 g / 1537.4 N
OK
80 °C -6.6% 153.11 kg / 337.55 pounds
153110.6 g / 1502.0 N
100 °C -28.8% 116.72 kg / 257.32 pounds
116718.2 g / 1145.0 N

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
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 pounds
5 950 Gs
102.01 kg / 224.90 pounds
102012 g / 1000.7 N
N/A
1 mm 660.96 kg / 1457.16 pounds
10 556 Gs
99.14 kg / 218.57 pounds
99144 g / 972.6 N
594.86 kg / 1311.45 pounds
~0 Gs
2 mm 641.69 kg / 1414.69 pounds
10 401 Gs
96.25 kg / 212.20 pounds
96254 g / 944.3 N
577.52 kg / 1273.22 pounds
~0 Gs
3 mm 622.69 kg / 1372.80 pounds
10 246 Gs
93.40 kg / 205.92 pounds
93404 g / 916.3 N
560.42 kg / 1235.52 pounds
~0 Gs
5 mm 585.53 kg / 1290.87 pounds
9 936 Gs
87.83 kg / 193.63 pounds
87830 g / 861.6 N
526.98 kg / 1161.79 pounds
~0 Gs
10 mm 498.14 kg / 1098.21 pounds
9 164 Gs
74.72 kg / 164.73 pounds
74721 g / 733.0 N
448.33 kg / 988.39 pounds
~0 Gs
20 mm 350.25 kg / 772.16 pounds
7 684 Gs
52.54 kg / 115.82 pounds
52537 g / 515.4 N
315.22 kg / 694.95 pounds
~0 Gs
50 mm 107.57 kg / 237.16 pounds
4 259 Gs
16.14 kg / 35.57 pounds
16136 g / 158.3 N
96.82 kg / 213.44 pounds
~0 Gs
60 mm 72.12 kg / 159.00 pounds
3 487 Gs
10.82 kg / 23.85 pounds
10818 g / 106.1 N
64.91 kg / 143.10 pounds
~0 Gs
70 mm 48.77 kg / 107.51 pounds
2 867 Gs
7.31 kg / 16.13 pounds
7315 g / 71.8 N
43.89 kg / 96.76 pounds
~0 Gs
80 mm 33.37 kg / 73.57 pounds
2 372 Gs
5.01 kg / 11.04 pounds
5005 g / 49.1 N
30.03 kg / 66.21 pounds
~0 Gs
90 mm 23.15 kg / 51.04 pounds
1 976 Gs
3.47 kg / 7.66 pounds
3473 g / 34.1 N
20.84 kg / 45.94 pounds
~0 Gs
100 mm 16.30 kg / 35.94 pounds
1 658 Gs
2.45 kg / 5.39 pounds
2445 g / 24.0 N
14.67 kg / 32.34 pounds
~0 Gs

Table 7: Hazards (implants) - warnings
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
Car key 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: Impact energy (kinetic energy) - 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: Surface protection spec
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: Construction data (Pc)
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%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Shear force

*Warning: On a vertical surface, the magnet holds merely a fraction of its nominal pull.

2. Efficiency vs thickness

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

3. Heat tolerance

*For standard magnets, 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

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.

Engineering data and GPSR
Chemical composition
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%
Environmental data
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: 010098-2026
Measurement Calculator
Force (pull)

Field Strength

Other offers

This product is an extremely powerful rod magnet, composed of advanced NdFeB material, which, with dimensions of Ø70x60 mm, guarantees the highest energy density. This specific item features high dimensional repeatability and industrial build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with significant force (approx. 163.93 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is created for building generators, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 1608.16 N with a weight of only 1731.8 g, this rod is indispensable in miniature devices and wherever low weight is crucial.
Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 70.1 mm) using epoxy glues. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Grade N38 is the most popular standard for industrial neodymium magnets, offering an optimal price-to-power ratio and operational stability. If you need even stronger magnets in the same volume (Ø70x60), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 70 mm and height 60 mm. The value of 1608.16 N means that the magnet is capable of holding a weight many times exceeding its own mass of 1731.8 g. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 60 mm), which means that the N and S poles are located on the flat, circular surfaces. 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

Besides their high retention, neodymium magnets are valued for these benefits:
  • Their magnetic field is durable, and after around 10 years it decreases only by ~1% (according to research),
  • Neodymium magnets prove to be extremely resistant to demagnetization caused by magnetic disturbances,
  • By using a smooth layer of silver, the element acquires an aesthetic look,
  • Neodymium magnets deliver maximum magnetic induction on a their surface, which increases force concentration,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
  • In view of the potential of accurate molding and customization to individualized solutions, neodymium magnets can be modeled in a broad palette of forms and dimensions, which makes them more universal,
  • Wide application in advanced technology sectors – they are used in hard drives, electromotive mechanisms, advanced medical instruments, as well as other advanced devices.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Cons

Cons of neodymium magnets: application proposals
  • They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
  • When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and 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 advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
  • We recommend casing - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complex shapes.
  • Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child safety. Furthermore, small elements of these products can complicate diagnosis medical in case of swallowing.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Maximum lifting force for a neodymium magnet – what it depends on?

Breakaway force was defined for the most favorable conditions, taking into account:
  • on a plate made of structural steel, perfectly concentrating the magnetic field
  • with a thickness no less than 10 mm
  • characterized by smoothness
  • without the slightest insulating layer between the magnet and steel
  • under vertical application of breakaway force (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Impact of factors on magnetic holding capacity in practice

Real force is influenced by specific conditions, mainly (from most important):
  • Gap (between the magnet and the metal), since even a microscopic clearance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, rust or debris).
  • Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
  • Plate thickness – insufficiently thick steel does not close the flux, causing part of the power to be lost to the other side.
  • Material composition – different alloys reacts the same. High carbon content worsen the interaction with the magnet.
  • Surface condition – smooth surfaces ensure maximum contact, which increases force. Uneven metal weaken the grip.
  • Temperature influence – high temperature reduces pulling force. Too high temperature can permanently damage the magnet.

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the lifting capacity is smaller. In addition, even a small distance between the magnet and the plate reduces the load capacity.

H&S for magnets
Pinching danger

Pinching hazard: The pulling power is so great that it can cause blood blisters, pinching, and even bone fractures. Protective gloves are recommended.

Magnet fragility

Protect your eyes. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. We recommend safety glasses.

Safe operation

Before starting, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.

Warning for allergy sufferers

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If an allergic reaction occurs, immediately stop working with magnets and wear gloves.

Keep away from computers

Very strong magnetic fields can destroy records on payment cards, hard drives, and storage devices. Maintain a gap of at least 10 cm.

Do not drill into magnets

Machining of neodymium magnets carries a risk of fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Threat to navigation

Be aware: neodymium magnets produce a field that confuses sensitive sensors. Maintain a safe distance from your phone, device, and GPS.

Medical implants

Warning for patients: Strong magnetic fields affect electronics. Keep at least 30 cm distance or ask another person to work with the magnets.

Do not give to children

Adult use only. Small elements can be swallowed, leading to serious injuries. Store away from children and animals.

Heat sensitivity

Regular neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. The loss of strength is permanent.

Safety First! Want to know more? Check our post: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98