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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

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Technical specification of the product - 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

Physical analysis of the product - report

The following data are the result of a engineering analysis. Values rely on algorithms for the material Nd2Fe14B. Operational conditions may differ from theoretical values. Use these data as a supplementary guide during assembly planning.

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

Table 2: Shear load (vertical surface)
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: Material efficiency (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 LBS
5464.3 g / 53.6 N
1 mm
8%
13.66 kg / 30.12 LBS
13660.8 g / 134.0 N
2 mm
17%
27.32 kg / 60.23 LBS
27321.7 g / 268.0 N
3 mm
25%
40.98 kg / 90.35 LBS
40982.5 g / 402.0 N
5 mm
42%
68.30 kg / 150.58 LBS
68304.2 g / 670.1 N
10 mm
83%
136.61 kg / 301.17 LBS
136608.3 g / 1340.1 N
11 mm
92%
150.27 kg / 331.29 LBS
150269.2 g / 1474.1 N
12 mm
100%
163.93 kg / 361.40 LBS
163930.0 g / 1608.2 N

Table 5: Thermal resistance (material behavior) - thermal limit
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 (repulsion) - 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: Safety (HSE) (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: Dynamics (kinetic energy) - warning
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: Coating parameters (durability)
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 (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: Submerged application
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%
Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Shear force

*Note: On a vertical surface, the magnet holds just ~20% of its nominal pull.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) severely limits the holding force.

3. Heat tolerance

*For N38 material, the critical limit 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.

Technical specification and ecology
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%
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
Quick Unit Converter
Pulling force

Magnetic Field

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The offered product is an exceptionally strong cylindrical magnet, composed of modern NdFeB material, which, with dimensions of Ø70x60 mm, guarantees optimal power. This specific item is characterized by high dimensional repeatability and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 163.93 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is ideal for building generators, advanced Hall effect sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the pull force of 1608.16 N with a weight of only 1731.8 g, this cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.
Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure stability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Magnets N38 are suitable for 90% of applications in automation and machine building, where extreme miniaturization with maximum force is not required. 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 store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 70 mm and height 60 mm. The key parameter here is the holding force amounting to approximately 163.93 kg (force ~1608.16 N), which, with such defined dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, 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 70 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.

Advantages and disadvantages of neodymium magnets.

Pros

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They retain attractive force for nearly 10 years – the loss is just ~1% (in theory),
  • Magnets very well protect themselves against loss of magnetization caused by foreign field sources,
  • In other words, due to the metallic finish of nickel, the element gains visual value,
  • Magnets exhibit huge magnetic induction on the outer side,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for functioning at temperatures reaching 230°C and above...
  • Possibility of precise modeling as well as optimizing to individual requirements,
  • Fundamental importance in high-tech industry – they find application in hard drives, electromotive mechanisms, medical devices, also industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which makes them useful in miniature devices

Disadvantages

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
  • When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their strength 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 immune to moisture, when using outdoors
  • Due to limitations in creating threads and complicated forms in magnets, we recommend using cover - magnetic mechanism.
  • Potential hazard related to microscopic parts of magnets pose a threat, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small components of these devices 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 increases costs of application in large quantities

Lifting parameters

Best holding force of the magnet in ideal parameterswhat it depends on?

The load parameter shown refers to the maximum value, recorded under optimal environment, meaning:
  • on a block made of mild steel, effectively closing the magnetic flux
  • possessing a massiveness of minimum 10 mm to ensure full flux closure
  • with an ground touching surface
  • under conditions of ideal adhesion (surface-to-surface)
  • under axial application of breakaway force (90-degree angle)
  • at temperature room level

Determinants of lifting force in real conditions

It is worth knowing that the application force will differ depending on elements below, starting with the most relevant:
  • Gap between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Loading method – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
  • Base massiveness – insufficiently thick plate does not accept the full field, causing part of the flux to be escaped to the other side.
  • Material type – ideal substrate is high-permeability steel. Cast iron may attract less.
  • Surface quality – the more even the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Temperature – heating the magnet results in weakening of induction. Check the thermal limit for a given model.

Lifting capacity was assessed with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.

Warnings
Danger to the youngest

Adult use only. Small elements can be swallowed, causing intestinal necrosis. Store out of reach of kids and pets.

Thermal limits

Avoid heat. NdFeB magnets are sensitive to temperature. If you need operation above 80°C, look for special high-temperature series (H, SH, UH).

Keep away from computers

Equipment safety: Strong magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Risk of cracking

Neodymium magnets are ceramic materials, which means they are very brittle. Clashing of two magnets will cause them cracking into shards.

Finger safety

Risk of injury: The attraction force is so immense that it can cause hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Implant safety

Individuals with a ICD have to keep an safe separation from magnets. The magnetism can stop the operation of the life-saving device.

Nickel coating and allergies

Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If skin irritation appears, cease working with magnets and wear gloves.

Fire risk

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

Phone sensors

A strong magnetic field disrupts the functioning of magnetometers in smartphones and GPS navigation. Keep magnets near a smartphone to prevent damaging the sensors.

Caution required

Before use, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.

Danger! Learn more about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98