Product available Ships tomorrow

MW 7x2 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010099

GTIN/EAN: 5906301810988

5.00

Diameter Ø

7 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

0.58 g

Magnetization Direction

↑ axial

Load capacity

0.99 kg / 9.76 N

Magnetic Induction

307.23 mT / 3072 Gs

Coating

[NiCuNi] Nickel

0.381 with VAT / pcs + price for transport

0.310 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
0.310 ZŁ
0.381 ZŁ
price from 2100 pcs
0.279 ZŁ
0.343 ZŁ
price from 3000 pcs
0.273 ZŁ
0.336 ZŁ
Not sure which magnet to buy?

Call us +48 888 99 98 98 if you prefer get in touch via request form the contact section.
Parameters as well as appearance of magnetic components can be calculated with our power calculator.

Orders submitted before 14:00 will be dispatched today!

Technical - MW 7x2 / N38 - cylindrical magnet

Specification / characteristics - MW 7x2 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010099
GTIN/EAN 5906301810988
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 7 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 0.58 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.99 kg / 9.76 N
Magnetic Induction ~ ? 307.23 mT / 3072 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 7x2 / 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 product - data

Presented values constitute the outcome of a physical simulation. Results were calculated on algorithms for the class Nd2Fe14B. Real-world conditions may differ. Please consider these calculations as a reference point during assembly planning.

Table 1: Static pull force (pull vs gap) - interaction chart
MW 7x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3070 Gs
307.0 mT
0.99 kg / 2.18 lbs
990.0 g / 9.7 N
low risk
1 mm 2332 Gs
233.2 mT
0.57 kg / 1.26 lbs
571.1 g / 5.6 N
low risk
2 mm 1590 Gs
159.0 mT
0.27 kg / 0.59 lbs
265.5 g / 2.6 N
low risk
3 mm 1044 Gs
104.4 mT
0.11 kg / 0.25 lbs
114.6 g / 1.1 N
low risk
5 mm 466 Gs
46.6 mT
0.02 kg / 0.05 lbs
22.8 g / 0.2 N
low risk
10 mm 100 Gs
10.0 mT
0.00 kg / 0.00 lbs
1.1 g / 0.0 N
low risk
15 mm 35 Gs
3.5 mT
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
low risk
20 mm 16 Gs
1.6 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk
30 mm 5 Gs
0.5 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk
50 mm 1 Gs
0.1 mT
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
low risk

Table 2: Sliding capacity (wall)
MW 7x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.20 kg / 0.44 lbs
198.0 g / 1.9 N
1 mm Stal (~0.2) 0.11 kg / 0.25 lbs
114.0 g / 1.1 N
2 mm Stal (~0.2) 0.05 kg / 0.12 lbs
54.0 g / 0.5 N
3 mm Stal (~0.2) 0.02 kg / 0.05 lbs
22.0 g / 0.2 N
5 mm Stal (~0.2) 0.00 kg / 0.01 lbs
4.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N

Table 3: Vertical assembly (sliding) - vertical pull
MW 7x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.30 kg / 0.65 lbs
297.0 g / 2.9 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.20 kg / 0.44 lbs
198.0 g / 1.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.10 kg / 0.22 lbs
99.0 g / 1.0 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.50 kg / 1.09 lbs
495.0 g / 4.9 N

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 7x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.10 kg / 0.22 lbs
99.0 g / 1.0 N
1 mm
25%
0.25 kg / 0.55 lbs
247.5 g / 2.4 N
2 mm
50%
0.50 kg / 1.09 lbs
495.0 g / 4.9 N
3 mm
75%
0.74 kg / 1.64 lbs
742.5 g / 7.3 N
5 mm
100%
0.99 kg / 2.18 lbs
990.0 g / 9.7 N
10 mm
100%
0.99 kg / 2.18 lbs
990.0 g / 9.7 N
11 mm
100%
0.99 kg / 2.18 lbs
990.0 g / 9.7 N
12 mm
100%
0.99 kg / 2.18 lbs
990.0 g / 9.7 N

Table 5: Thermal stability (material behavior) - resistance threshold
MW 7x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.99 kg / 2.18 lbs
990.0 g / 9.7 N
OK
40 °C -2.2% 0.97 kg / 2.13 lbs
968.2 g / 9.5 N
OK
60 °C -4.4% 0.95 kg / 2.09 lbs
946.4 g / 9.3 N
80 °C -6.6% 0.92 kg / 2.04 lbs
924.7 g / 9.1 N
100 °C -28.8% 0.70 kg / 1.55 lbs
704.9 g / 6.9 N

Table 6: Two magnets (attraction) - field range
MW 7x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 2.24 kg / 4.93 lbs
4 653 Gs
0.34 kg / 0.74 lbs
335 g / 3.3 N
N/A
1 mm 1.76 kg / 3.89 lbs
5 454 Gs
0.26 kg / 0.58 lbs
265 g / 2.6 N
1.59 kg / 3.50 lbs
~0 Gs
2 mm 1.29 kg / 2.84 lbs
4 663 Gs
0.19 kg / 0.43 lbs
193 g / 1.9 N
1.16 kg / 2.56 lbs
~0 Gs
3 mm 0.89 kg / 1.97 lbs
3 884 Gs
0.13 kg / 0.30 lbs
134 g / 1.3 N
0.81 kg / 1.77 lbs
~0 Gs
5 mm 0.40 kg / 0.87 lbs
2 581 Gs
0.06 kg / 0.13 lbs
59 g / 0.6 N
0.36 kg / 0.78 lbs
~0 Gs
10 mm 0.05 kg / 0.11 lbs
932 Gs
0.01 kg / 0.02 lbs
8 g / 0.1 N
0.05 kg / 0.10 lbs
~0 Gs
20 mm 0.00 kg / 0.01 lbs
200 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
50 mm 0.00 kg / 0.00 lbs
17 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
60 mm 0.00 kg / 0.00 lbs
10 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
70 mm 0.00 kg / 0.00 lbs
6 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
80 mm 0.00 kg / 0.00 lbs
4 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
90 mm 0.00 kg / 0.00 lbs
3 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
100 mm 0.00 kg / 0.00 lbs
2 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs

Table 7: Hazards (electronics) - warnings
MW 7x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 3.5 cm
Hearing aid 10 Gs (1.0 mT) 2.5 cm
Mechanical watch 20 Gs (2.0 mT) 2.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 1.5 cm
Remote 50 Gs (5.0 mT) 1.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm

Table 8: Collisions (kinetic energy) - collision effects
MW 7x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 41.69 km/h
(11.58 m/s)
0.04 J
30 mm 72.17 km/h
(20.05 m/s)
0.12 J
50 mm 93.17 km/h
(25.88 m/s)
0.19 J
100 mm 131.76 km/h
(36.60 m/s)
0.39 J

Table 9: Coating parameters (durability)
MW 7x2 / 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 7x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 284 Mx 12.8 µWb
Pc Coefficient 0.39 Low (Flat)

Table 11: Hydrostatics and buoyancy
MW 7x2 / N38

Environment Effective steel pull Effect
Air (land) 0.99 kg Standard
Water (riverbed) 1.13 kg
(+0.14 kg buoyancy gain)
+14.5%
Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Vertical hold

*Warning: On a vertical wall, the magnet retains just a fraction of its perpendicular strength.

2. Efficiency vs thickness

*Thin steel (e.g. 0.5mm PC case) drastically reduces the holding force.

3. Temperature resistance

*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) = 0.39

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.

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%
Sustainability
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: 010099-2026
Measurement Calculator
Pulling force

Field Strength

Other deals

The presented product is an exceptionally strong cylinder magnet, manufactured from durable NdFeB material, which, at dimensions of Ø7x2 mm, guarantees the highest energy density. The MW 7x2 / N38 model boasts an accuracy of ±0.1mm and professional build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with significant force (approx. 0.99 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 9.76 N with a weight of only 0.58 g, this cylindrical magnet 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., 7.1 mm) using two-component epoxy glues. To ensure long-term durability 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 the strongest magnets in the same volume (Ø7x2), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 7 mm and height 2 mm. The key parameter here is the lifting capacity amounting to approximately 0.99 kg (force ~9.76 N), which, with such defined dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it 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 7 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 diametrically if your project requires it.

Pros as well as cons of Nd2Fe14B magnets.

Advantages

Besides their high retention, neodymium magnets are valued for these benefits:
  • They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (in laboratory conditions),
  • They are resistant to demagnetization induced by external magnetic fields,
  • In other words, due to the shiny layer of nickel, the element gains a professional look,
  • The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling operation at temperatures reaching 230°C and above...
  • Possibility of detailed creating and modifying to individual applications,
  • Key role in innovative solutions – they serve a role in mass storage devices, motor assemblies, advanced medical instruments, and complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which makes them useful in small systems

Weaknesses

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
  • Neodymium magnets decrease their force 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
  • Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • We suggest a housing - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complicated shapes.
  • Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. Additionally, small elements of these magnets are able to complicate diagnosis medical in case of swallowing.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum lifting capacity of the magnetwhat contributes to it?

The specified lifting capacity refers to the limit force, measured under optimal environment, meaning:
  • with the application of a yoke made of low-carbon steel, guaranteeing maximum field concentration
  • possessing a massiveness of min. 10 mm to ensure full flux closure
  • with a surface perfectly flat
  • under conditions of ideal adhesion (surface-to-surface)
  • during pulling in a direction vertical to the plane
  • at conditions approx. 20°C

Key elements affecting lifting force

During everyday use, the actual holding force depends on several key aspects, presented from most significant:
  • Space between magnet and steel – every millimeter of separation (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of nominal force).
  • Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Material type – the best choice is high-permeability steel. Stainless steels may have worse magnetic properties.
  • Smoothness – full contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
  • Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, whereas under parallel forces the lifting capacity is smaller. Additionally, even a small distance between the magnet and the plate reduces the lifting capacity.

Safety rules for work with neodymium magnets
Medical implants

Life threat: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.

Shattering risk

Despite metallic appearance, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Conscious usage

Exercise caution. Neodymium magnets attract from a distance and snap with massive power, often faster than you can react.

Electronic hazard

Intense magnetic fields can corrupt files on credit cards, hard drives, and other magnetic media. Keep a distance of min. 10 cm.

Dust explosion hazard

Fire warning: Neodymium dust is explosive. Avoid machining magnets without safety gear as this may cause fire.

GPS Danger

Note: rare earth magnets produce a field that disrupts sensitive sensors. Maintain a safe distance from your phone, tablet, and navigation systems.

Crushing risk

Large magnets can crush fingers instantly. Under no circumstances put your hand betwixt two strong magnets.

Allergy Warning

Nickel alert: The nickel-copper-nickel coating consists of nickel. If redness happens, immediately stop handling magnets and wear gloves.

Swallowing risk

Neodymium magnets are not suitable for play. Swallowing several magnets can lead to them connecting inside the digestive tract, which constitutes a critical condition and requires immediate surgery.

Permanent damage

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and pulling force.

Safety First! Learn more about hazards in the article: Safety of working with magnets.