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MW 5x15 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010084

GTIN/EAN: 5906301810834

5.00

Diameter Ø

5 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

2.21 g

Magnetization Direction

↑ axial

Load capacity

0.48 kg / 4.68 N

Magnetic Induction

610.03 mT / 6100 Gs

Coating

[NiCuNi] Nickel

1.107 with VAT / pcs + price for transport

0.900 ZŁ net + 23% VAT / pcs

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Technical data - MW 5x15 / N38 - cylindrical magnet

Specification / characteristics - MW 5x15 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010084
GTIN/EAN 5906301810834
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 5 mm [±0,1 mm]
Height 15 mm [±0,1 mm]
Weight 2.21 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.48 kg / 4.68 N
Magnetic Induction ~ ? 610.03 mT / 6100 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x15 / 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 - data

Presented data are the result of a physical analysis. Values rely on models for the material Nd2Fe14B. Real-world performance might slightly deviate from the simulation results. Please consider these data as a supplementary guide during assembly planning.

Table 1: Static force (pull vs gap) - interaction chart
MW 5x15 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 6091 Gs
609.1 mT
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
safe
1 mm 3823 Gs
382.3 mT
0.19 kg / 0.42 pounds
189.1 g / 1.9 N
safe
2 mm 2261 Gs
226.1 mT
0.07 kg / 0.15 pounds
66.1 g / 0.6 N
safe
3 mm 1378 Gs
137.8 mT
0.02 kg / 0.05 pounds
24.6 g / 0.2 N
safe
5 mm 607 Gs
60.7 mT
0.00 kg / 0.01 pounds
4.8 g / 0.0 N
safe
10 mm 154 Gs
15.4 mT
0.00 kg / 0.00 pounds
0.3 g / 0.0 N
safe
15 mm 63 Gs
6.3 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
safe
20 mm 32 Gs
3.2 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
30 mm 12 Gs
1.2 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe

Table 2: Vertical hold (vertical surface)
MW 5x15 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.10 kg / 0.21 pounds
96.0 g / 0.9 N
1 mm Stal (~0.2) 0.04 kg / 0.08 pounds
38.0 g / 0.4 N
2 mm Stal (~0.2) 0.01 kg / 0.03 pounds
14.0 g / 0.1 N
3 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 g / 0.0 N
5 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N

Table 3: Wall mounting (shearing) - vertical pull
MW 5x15 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.14 kg / 0.32 pounds
144.0 g / 1.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.10 kg / 0.21 pounds
96.0 g / 0.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.05 kg / 0.11 pounds
48.0 g / 0.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.24 kg / 0.53 pounds
240.0 g / 2.4 N

Table 4: Steel thickness (saturation) - power losses
MW 5x15 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.05 kg / 0.11 pounds
48.0 g / 0.5 N
1 mm
25%
0.12 kg / 0.26 pounds
120.0 g / 1.2 N
2 mm
50%
0.24 kg / 0.53 pounds
240.0 g / 2.4 N
3 mm
75%
0.36 kg / 0.79 pounds
360.0 g / 3.5 N
5 mm
100%
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
10 mm
100%
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
11 mm
100%
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
12 mm
100%
0.48 kg / 1.06 pounds
480.0 g / 4.7 N

Table 5: Thermal stability (material behavior) - thermal limit
MW 5x15 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.48 kg / 1.06 pounds
480.0 g / 4.7 N
OK
40 °C -2.2% 0.47 kg / 1.03 pounds
469.4 g / 4.6 N
OK
60 °C -4.4% 0.46 kg / 1.01 pounds
458.9 g / 4.5 N
OK
80 °C -6.6% 0.45 kg / 0.99 pounds
448.3 g / 4.4 N
100 °C -28.8% 0.34 kg / 0.75 pounds
341.8 g / 3.4 N

Table 6: Two magnets (attraction) - field collision
MW 5x15 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 4.49 kg / 9.90 pounds
6 154 Gs
0.67 kg / 1.49 pounds
674 g / 6.6 N
N/A
1 mm 2.91 kg / 6.42 pounds
9 810 Gs
0.44 kg / 0.96 pounds
437 g / 4.3 N
2.62 kg / 5.78 pounds
~0 Gs
2 mm 1.77 kg / 3.90 pounds
7 646 Gs
0.27 kg / 0.59 pounds
265 g / 2.6 N
1.59 kg / 3.51 pounds
~0 Gs
3 mm 1.05 kg / 2.31 pounds
5 880 Gs
0.16 kg / 0.35 pounds
157 g / 1.5 N
0.94 kg / 2.08 pounds
~0 Gs
5 mm 0.37 kg / 0.82 pounds
3 507 Gs
0.06 kg / 0.12 pounds
56 g / 0.5 N
0.34 kg / 0.74 pounds
~0 Gs
10 mm 0.04 kg / 0.10 pounds
1 213 Gs
0.01 kg / 0.01 pounds
7 g / 0.1 N
0.04 kg / 0.09 pounds
~0 Gs
20 mm 0.00 kg / 0.01 pounds
309 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
37 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
24 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
16 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
11 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
8 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
6 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Safety (HSE) (implants) - precautionary measures
MW 5x15 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 4.5 cm
Hearing aid 10 Gs (1.0 mT) 3.5 cm
Mechanical watch 20 Gs (2.0 mT) 2.5 cm
Mobile device 40 Gs (4.0 mT) 2.0 cm
Remote 50 Gs (5.0 mT) 2.0 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm

Table 8: Dynamics (cracking risk) - warning
MW 5x15 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 14.87 km/h
(4.13 m/s)
0.02 J
30 mm 25.74 km/h
(7.15 m/s)
0.06 J
50 mm 33.23 km/h
(9.23 m/s)
0.09 J
100 mm 47.00 km/h
(13.06 m/s)
0.19 J

Table 9: Anti-corrosion coating durability
MW 5x15 / 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 (Pc)
MW 5x15 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 382 Mx 13.8 µWb
Pc Coefficient 1.38 High (Stable)

Table 11: Hydrostatics and buoyancy
MW 5x15 / N38

Environment Effective steel pull Effect
Air (land) 0.48 kg Standard
Water (riverbed) 0.55 kg
(+0.07 kg buoyancy gain)
+14.5%
Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Wall mount (shear)

*Warning: On a vertical wall, the magnet holds merely ~20% of its nominal pull.

2. Efficiency vs thickness

*Thin metal sheet (e.g. 0.5mm PC case) significantly limits 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) = 1.38

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%
Ecology and recycling (GPSR)
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: 010084-2026
Magnet Unit Converter
Force (pull)

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The offered product is an incredibly powerful rod magnet, manufactured from modern NdFeB material, which, at dimensions of Ø5x15 mm, guarantees optimal power. This specific item boasts an accuracy of ±0.1mm and professional build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with significant force (approx. 0.48 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick 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 positioning or actuating element. Thanks to the pull force of 4.68 N with a weight of only 2.21 g, this rod is indispensable in miniature devices and wherever every gram matters.
Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 5.1 mm) using two-component epoxy glues. To ensure stability in automation, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.
Magnets N38 are strong enough for the majority of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø5x15), 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 Ø5x15 mm, which, at a weight of 2.21 g, makes it an element with impressive magnetic energy density. The value of 4.68 N means that the magnet is capable of holding a weight many times exceeding its own mass of 2.21 g. The product has a [NiCuNi] coating, which protects the surface 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 5 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.

Strengths as well as weaknesses of neodymium magnets.

Benefits

Besides their remarkable strength, neodymium magnets offer the following advantages:
  • They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
  • Magnets perfectly resist against demagnetization caused by ambient magnetic noise,
  • In other words, due to the glossy surface of nickel, the element gains visual value,
  • Neodymium magnets achieve maximum magnetic induction on a small area, which increases force concentration,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Thanks to the option of flexible molding and adaptation to unique requirements, magnetic components can be modeled in a broad palette of forms and dimensions, which expands the range of possible applications,
  • Huge importance in electronics industry – they are commonly used in computer drives, electric drive systems, medical devices, as well as modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in miniature devices

Limitations

Cons of neodymium magnets: application proposals
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
  • When exposed to high temperature, neodymium magnets suffer a drop in force. 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 when using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in realizing nuts and complex forms in magnets, we propose using a housing - magnetic holder.
  • Health risk related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. Additionally, small elements of these products can complicate diagnosis medical when they are in the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Highest magnetic holding forcewhat affects it?

Breakaway force was defined for ideal contact conditions, including:
  • on a plate made of mild steel, optimally conducting the magnetic field
  • with a cross-section of at least 10 mm
  • with an ideally smooth contact surface
  • under conditions of no distance (metal-to-metal)
  • during pulling in a direction perpendicular to the plane
  • in temp. approx. 20°C

Determinants of lifting force in real conditions

Holding efficiency is influenced by specific conditions, such as (from priority):
  • Gap (betwixt the magnet and the plate), since even a microscopic distance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to varnish, corrosion or debris).
  • Force direction – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of nominal force).
  • Plate thickness – too thin sheet causes magnetic saturation, causing part of the power to be escaped into the air.
  • Steel grade – ideal substrate is pure iron steel. Stainless steels may have worse magnetic properties.
  • Surface finish – ideal contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate lowers the lifting capacity.

Safe handling of neodymium magnets
Powerful field

Use magnets with awareness. Their powerful strength can surprise even experienced users. Plan your moves and do not underestimate their power.

Physical harm

Mind your fingers. Two powerful magnets will snap together immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!

Danger to pacemakers

For implant holders: Powerful magnets disrupt electronics. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Nickel coating and allergies

Studies show that the nickel plating (the usual finish) is a common allergen. If you have an allergy, refrain from direct skin contact and select versions in plastic housing.

Data carriers

Intense magnetic fields can corrupt files on payment cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.

Shattering risk

Watch out for shards. Magnets can explode upon violent connection, ejecting shards into the air. Eye protection is mandatory.

GPS Danger

Navigation devices and smartphones are extremely sensitive to magnetism. Close proximity with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Do not give to children

Adult use only. Tiny parts pose a choking risk, causing severe trauma. Keep away from children and animals.

Operating temperature

Keep cool. NdFeB magnets are sensitive to temperature. If you need resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

Flammability

Machining of NdFeB material carries a risk of fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Warning! More info about risks in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98