Product available Ships tomorrow CO2 GPSR PPWR REACH

MW 70x60 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010098

GTIN/EAN: 5906301810971

5.00
Load capacity 163.93 kg / 1608.16 N Magnetic Induction 535.45 mT / 5354 Gs
Diameter Ø
70 mm [±0,1 mm]
Height
60 mm [±0,1 mm]
Weight
1731.8 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

512.20net / pcs

630.01 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?

Quantity
Net
Gross
price from 1 pcs
512.20 zł
630.01 zł
price from 5 pcs
450.74 zł
554.41 zł

Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

Order by 14:00 and we’ll ship today!

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 310 °C
Curie Temperature TF 590 °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 product - technical parameters

Presented data are the outcome of a physical analysis. Values were calculated on algorithms for the class Nd2Fe14B. Operational conditions might slightly deviate from the simulation results. Please consider these calculations as a reference point when designing systems.

Table 1: Static pull force (pull 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 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
medium risk

Table 2: Slippage hold (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: Wall mounting (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 (substrate influence) - power losses
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: Working in heat (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 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 collision
MW 70x60 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding 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: Hazards (electronics) - 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
Mechanical watch 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: Impact energy (kinetic energy) - warning
MW 70x60 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 13.35 km/h
(3.71 m/s)
11.92 J
30 mm 17.44 km/h
(4.84 m/s)
20.32 J
50 mm 18.17 km/h
(5.05 m/s)
22.06 J
100 mm 18.41 km/h
(5.12 m/s)
22.66 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: 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%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

1. Vertical hold

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

2. Efficiency vs thickness

*Thin steel (e.g. 0.5mm PC case) significantly limits 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

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
Measurement Calculator

Pulling force


Field Strength

Check out more proposals

This product is a very strong rod magnet, composed of modern NdFeB material, which, at dimensions of Ø70x60 mm, guarantees the highest energy density. The MW 70x60 / N38 model boasts high dimensional repeatability and professional build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 163.93 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 1608.16 N with a weight of only 1731.8 g, this rod is indispensable in electronics and wherever low weight is crucial.
Since our magnets have a tolerance of ±0.1mm, 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, anaerobic resins 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 professional neodymium magnets, offering a great economic balance 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 in continuous sale in our store.
This model is characterized by dimensions Ø70x60 mm, which, at a weight of 1731.8 g, makes it an element with high magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 163.93 kg (force ~1608.16 N), which, with such compact dimensions, proves the high grade of the NdFeB material. 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 70 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.

Pros and cons of Nd2Fe14B magnets.

Strengths

Besides their high retention, neodymium magnets are valued for these benefits:
  • They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
  • They are extremely resistant to demagnetization induced by presence of other magnetic fields,
  • The use of an shiny coating of noble metals (nickel, gold, silver) causes the element to present itself better,
  • The surface of neodymium magnets generates a unique magnetic field – this is one of their assets,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Due to the ability of flexible molding and adaptation to specialized needs, magnetic components can be manufactured in a variety of geometric configurations, which increases their versatility,
  • Huge importance in modern industrial fields – they serve a role in hard drives, brushless drives, precision medical tools, and complex engineering applications.
  • Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Cons

Disadvantages of NdFeB magnets:
  • To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in power. 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
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Limited ability of producing threads in the magnet and complicated shapes - recommended is cover - magnet mounting.
  • Possible danger related to microscopic parts of magnets can be dangerous, in case of ingestion, which becomes key in the context of child health protection. It is also worth noting that tiny parts of these magnets are able to be problematic in diagnostics medical in case of swallowing.
  • With mass production the cost of neodymium magnets can be a barrier,

Pull force analysis

Highest magnetic holding forcewhat affects it?

Information about lifting capacity was determined for the most favorable conditions, including:
  • using a plate made of high-permeability steel, acting as a ideal flux conductor
  • with a thickness no less than 10 mm
  • characterized by smoothness
  • without any clearance between the magnet and steel
  • under perpendicular force direction (90-degree angle)
  • at conditions approx. 20°C

Lifting capacity in real conditions – factors

In real-world applications, the actual lifting capacity is determined by many variables, listed from most significant:
  • Space between surfaces – every millimeter of distance (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
  • Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
  • Material composition – not every steel attracts identically. High carbon content worsen the interaction with the magnet.
  • Smoothness – ideal contact is obtained only on polished steel. Any scratches and bumps create air cushions, reducing force.
  • Thermal environment – heating the magnet causes a temporary drop of induction. Check the thermal limit for a given model.

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under parallel forces the holding force is lower. Additionally, even a small distance between the magnet’s surface and the plate reduces the holding force.

Precautions when working with neodymium magnets
Magnetic media

Intense magnetic fields can erase data on credit cards, HDDs, and storage devices. Stay away of min. 10 cm.

Material brittleness

Despite the nickel coating, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.

Crushing risk

Large magnets can break fingers in a fraction of a second. Do not put your hand between two strong magnets.

Medical implants

Warning for patients: Powerful magnets disrupt medical devices. Maintain at least 30 cm distance or request help to work with the magnets.

Fire warning

Powder created during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.

Handling rules

Handle magnets with awareness. Their huge power can surprise even professionals. Be vigilant and do not underestimate their power.

Allergic reactions

Studies show that nickel (standard magnet coating) is a common allergen. For allergy sufferers, refrain from touching magnets with bare hands and select coated magnets.

Compass and GPS

GPS units and mobile phones are highly susceptible to magnetism. Direct contact with a strong magnet can ruin the sensors in your phone.

Thermal limits

Monitor thermal conditions. Heating the magnet to high heat will destroy its properties and strength.

Choking Hazard

Adult use only. Small elements pose a choking risk, leading to intestinal necrosis. Keep out of reach of kids and pets.

Caution! Want to know more? Check our post: Why are neodymium magnets dangerous?