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MW 16x9 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010035

GTIN/EAN: 5906301810346

5.00

Diameter Ø

16 mm [±0,1 mm]

Height

9 mm [±0,1 mm]

Weight

13.57 g

Magnetization Direction

↑ axial

Load capacity

8.53 kg / 83.64 N

Magnetic Induction

463.05 mT / 4631 Gs

Coating

[NiCuNi] Nickel

view technical data »

7.36 ZŁ with VAT / pcs + price for transport

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Physical properties - MW 16x9 / N38 - cylindrical magnet

Specification / characteristics - MW 16x9 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010035
GTIN/EAN 5906301810346
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 16 mm [±0,1 mm]
Height 9 mm [±0,1 mm]
Weight 13.57 g
Magnetization Direction ↑ axial
Load capacity ~ ? 8.53 kg / 83.64 N
Magnetic Induction ~ ? 463.05 mT / 4631 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 16x9 / 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

Engineering modeling of the magnet - technical parameters

The following values represent the outcome of a engineering calculation. Values rely on algorithms for the material Nd2Fe14B. Operational conditions may differ. Please consider these data as a reference point when designing systems.

Table 1: Static force (force vs distance) - characteristics
MW 16x9 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4628 Gs
462.8 mT
 8.53 kg / 18.81 lbs
8530.0 g / 83.7 N
 medium risk
1 mm 4072 Gs
407.2 mT
 6.60 kg / 14.56 lbs
6603.5 g / 64.8 N
 medium risk
2 mm 3510 Gs
351.0 mT
 4.91 kg / 10.82 lbs
4906.8 g / 48.1 N
 medium risk
3 mm 2982 Gs
298.2 mT
 3.54 kg / 7.80 lbs
3540.1 g / 34.7 N
 medium risk
5 mm 2097 Gs
209.7 mT
 1.75 kg / 3.86 lbs
1751.1 g / 17.2 N
 safe
10 mm 873 Gs
87.3 mT
 0.30 kg / 0.67 lbs
303.3 g / 3.0 N
 safe
15 mm 411 Gs
41.1 mT
 0.07 kg / 0.15 lbs
67.3 g / 0.7 N
 safe
20 mm 220 Gs
22.0 mT
 0.02 kg / 0.04 lbs
19.3 g / 0.2 N
 safe
30 mm 83 Gs
8.3 mT
 0.00 kg / 0.01 lbs
2.7 g / 0.0 N
 safe
50 mm 22 Gs
2.2 mT
 0.00 kg / 0.00 lbs
0.2 g / 0.0 N
 safe
Pulling power drops significantly with every subsequent millimeter of spacing. Keep in mind that even a very thin break (e.g., contamination, paint, veneer) strongly diminishes the holding power. Magnets hold strongest in perfect adhesion; gap weakens the force. Analyze how flashily the parameters plummet, when the product does not adhere tightly to the steel surface. When calculating the arrangement, avoid unnecessary gaps.

Table 2: Sliding load (wall)
MW 16x9 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.71 kg / 3.76 lbs
1706.0 g / 16.7 N
1 mm Stal (~0.2) 1.32 kg / 2.91 lbs
1320.0 g / 12.9 N
2 mm Stal (~0.2) 0.98 kg / 2.16 lbs
982.0 g / 9.6 N
3 mm Stal (~0.2) 0.71 kg / 1.56 lbs
708.0 g / 6.9 N
5 mm Stal (~0.2) 0.35 kg / 0.77 lbs
350.0 g / 3.4 N
10 mm Stal (~0.2) 0.06 kg / 0.13 lbs
60.0 g / 0.6 N
15 mm Stal (~0.2) 0.01 kg / 0.03 lbs
14.0 g / 0.1 N
20 mm Stal (~0.2) 0.00 kg / 0.01 lbs
4.0 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
This section defines the approximate force required to initiate the sliding of the magnet downwards against a vertical steel plate (assuming standard friction). The holding force is a function of the gap size between the magnet and the surface.

Table 3: Vertical assembly (shearing) - vertical pull
MW 16x9 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
2.56 kg / 5.64 lbs
2559.0 g / 25.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.71 kg / 3.76 lbs
1706.0 g / 16.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.85 kg / 1.88 lbs
853.0 g / 8.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
4.27 kg / 9.40 lbs
4265.0 g / 41.8 N
When placing a element on a vertical wall (e.g., a fridge), it will only hold just approx. 1/5 of nominal attraction strength. Gravity and a low friction coefficient cause that products slip easier than they pop off the substrate. Designing a hanger? Remember that the sliding force is much weaker than the perpendicular breakaway force. On a smooth steel, the holder will give way down under a much lighter load. Utilizing a rubberized layer can significantly raise the stability.

Table 4: Material efficiency (substrate influence) - power losses
MW 16x9 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.85 kg / 1.88 lbs
853.0 g / 8.4 N
1 mm
25%
 2.13 kg / 4.70 lbs
2132.5 g / 20.9 N
2 mm
50%
 4.27 kg / 9.40 lbs
4265.0 g / 41.8 N
3 mm
75%
 6.40 kg / 14.10 lbs
6397.5 g / 62.8 N
5 mm
100%
 8.53 kg / 18.81 lbs
8530.0 g / 83.7 N
10 mm
100%
 8.53 kg / 18.81 lbs
8530.0 g / 83.7 N
11 mm
100%
 8.53 kg / 18.81 lbs
8530.0 g / 83.7 N
12 mm
100%
 8.53 kg / 18.81 lbs
8530.0 g / 83.7 N
A thin sheet cannot focus the entire magnetic field, which wastes potential of the holder. If you attach a powerful product to a too thin substrate, the magnetism will pass right through and the pull force will drop sharply. To squeeze the maximum of this neodymium's potential, you require a sufficiently solid backing of steel. The saturation phenomenon causes that on sheet metal structures (e.g., car bodies), the product shows lower pull force. We suggest choosing the steel cross-section from these parameters.

Table 5: Thermal stability (material behavior) - thermal limit
MW 16x9 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 8.53 kg / 18.81 lbs
8530.0 g / 83.7 N
 OK
40 °C -2.2% 8.34 kg / 18.39 lbs
8342.3 g / 81.8 N
 OK
60 °C -4.4% 8.15 kg / 17.98 lbs
8154.7 g / 80.0 N
 OK
80 °C -6.6% 7.97 kg / 17.56 lbs
7967.0 g / 78.2 N
100 °C -28.8% 6.07 kg / 13.39 lbs
6073.4 g / 59.6 N
Standard neodymium magnets change their properties power above the temperature limit. Protect against heat – high temperature can irreversibly demagnetize this product. With every degree above norm, the neodymium's power temporarily drops. Avoid using this product close to ovens higher than its operating temperature limit. Exceeding the critical threshold will result in destruction of magnetism.
*Technical advisory: Heat tolerance is determined by both grade, as well as the dimension ratios. Low-profile magnets (low permeance coefficient) may lose charge permanently sooner than taller cylinders. Warning indicator in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 16x9 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 26.55 kg / 58.54 lbs
5 658 Gs
3.98 kg / 8.78 lbs
3983 g / 39.1 N
 N/A
1 mm 23.52 kg / 51.85 lbs
8 711 Gs
3.53 kg / 7.78 lbs
3528 g / 34.6 N
 21.17 kg / 46.66 lbs
~0 Gs
2 mm 20.56 kg / 45.32 lbs
8 145 Gs
3.08 kg / 6.80 lbs
3084 g / 30.2 N
 18.50 kg / 40.79 lbs
~0 Gs
3 mm 17.80 kg / 39.23 lbs
7 578 Gs
2.67 kg / 5.89 lbs
2669 g / 26.2 N
 16.02 kg / 35.31 lbs
~0 Gs
5 mm 13.01 kg / 28.69 lbs
6 481 Gs
1.95 kg / 4.30 lbs
1952 g / 19.2 N
 11.71 kg / 25.82 lbs
~0 Gs
10 mm 5.45 kg / 12.02 lbs
4 194 Gs
0.82 kg / 1.80 lbs
818 g / 8.0 N
 4.91 kg / 10.82 lbs
~0 Gs
20 mm 0.94 kg / 2.08 lbs
1 746 Gs
0.14 kg / 0.31 lbs
142 g / 1.4 N
 0.85 kg / 1.87 lbs
~0 Gs
50 mm 0.02 kg / 0.05 lbs
260 Gs
0.00 kg / 0.01 lbs
3 g / 0.0 N
 0.02 kg / 0.04 lbs
~0 Gs
60 mm 0.01 kg / 0.02 lbs
166 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
70 mm 0.00 kg / 0.01 lbs
112 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
80 mm 0.00 kg / 0.00 lbs
79 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
58 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
43 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two strong neodymiums attract each other from a wider radius than a magnet and sheet combination. Such a system of two magnets creates a more powerful interaction and a further horizon of performance. Designing a solid fastener? Apply two magnets instead of a neodymium and a striker plate. Exercise caution that when connecting a pair of magnets, the pinch force is extreme. The repulsion force is a bit weaker than the connection force, but still significant.
*Field value in repulsion mode reaches ~0 Gs in the exact middle of the gap (due to field cancellation).
Note: Figures demonstrate shear force of a pair of matching magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - warnings
MW 16x9 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 8.5 cm
Hearing aid 10 Gs (1.0 mT) 7.0 cm
Mechanical watch 20 Gs (2.0 mT) 5.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 4.0 cm
Car key 50 Gs (5.0 mT) 4.0 cm
Payment card 400 Gs (40.0 mT) 2.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm
A strong magnetic field is a serious hazard to electronic devices as well as medical implants. These magnets produce a flux that prevents correct functioning of sensitive medical devices. Be aware: the unseen radiation acts through matter and glass. Special caution must be taken by people with hearing aids and insulin pumps. The risk also applies to: mechanical watches, car keys, membranes, and screens. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - collision effects
MW 16x9 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.84 km/h
(7.18 m/s)
 0.35 J
30 mm 43.80 km/h
(12.17 m/s)
 1.00 J
50 mm 56.54 km/h
(15.71 m/s)
 1.67 J
100 mm 79.96 km/h
(22.21 m/s)
 3.35 J
Magnetic elements are prone to chipping – a collision with steel can result in shattering. Watch the impact speed – a neodymium left loose turns into a projectile. Striking energy can cause material chips or painful pinches to fingers. Be sure to control the product during installation so it doesn't hit violently against the metal. A collision at high speed means shattering of the neodymium. Wear safety glasses when playing with powerful specimens.

Table 9: Surface protection spec
MW 16x9 / 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)
The following table defines the conditions under which this product can be safely used. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (Pc)
MW 16x9 / N38

Parameter Value SI Unit / Description
Magnetic Flux 9 394 Mx 93.9 µWb
Pc Coefficient 0.63 High (Stable)
Flux value emitted by the magnet pole. Key data when building generators as well as sensors. Pc value determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 16x9 / N38

Environment Effective steel pull Effect
Air (land) 8.53 kg Standard
Water (riverbed) 9.77 kg
(+1.24 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
The magnetic field penetrates through water without any losses. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.
1. Wall mount (shear)

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

2. Efficiency vs thickness

*Thin metal sheet (e.g. 0.5mm PC case) drastically limits the holding force.

3. Temperature resistance

*For standard magnets, the safety limit is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.63

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%
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: 010035-2026
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This product is an exceptionally strong cylinder magnet, made from durable NdFeB material, which, at dimensions of Ø16x9 mm, guarantees maximum efficiency. This specific item features high dimensional repeatability and industrial build quality, making it an excellent solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 8.53 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Moreover, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is perfect for building generators, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 83.64 N with a weight of only 13.57 g, this rod is indispensable in miniature devices and wherever low weight is crucial.
Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure stability in automation, specialized industrial adhesives 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 (Ø16x9), 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 16 mm and height 9 mm. The value of 83.64 N means that the magnet is capable of holding a weight many times exceeding its own mass of 13.57 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 9 mm), which means that the N and S poles are located on the flat, circular surfaces. 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.

Strengths as well as weaknesses of neodymium magnets.

Pros

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (based on calculations),
  • Magnets perfectly resist against demagnetization caused by ambient magnetic noise,
  • In other words, due to the reflective surface of nickel, the element becomes visually attractive,
  • The surface of neodymium magnets generates a intense magnetic field – this is one of their assets,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures approaching 230°C and above...
  • Possibility of custom machining and adapting to concrete conditions,
  • Fundamental importance in advanced technology sectors – they are utilized in data components, motor assemblies, precision medical tools, also industrial machines.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Cons

Disadvantages of neodymium magnets:
  • To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in creating threads and complex shapes in magnets, we recommend using casing - magnetic mechanism.
  • Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the aspect of protecting the youngest. Additionally, tiny parts of these devices are able to complicate diagnosis medical when they are in the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Breakaway strength of the magnet in ideal conditions – what affects it?

The specified lifting capacity represents the maximum value, measured under laboratory conditions, meaning:
  • on a plate made of structural steel, perfectly concentrating the magnetic field
  • whose thickness equals approx. 10 mm
  • with an ideally smooth contact surface
  • without any air gap between the magnet and steel
  • during pulling in a direction perpendicular to the plane
  • in stable room temperature

Impact of factors on magnetic holding capacity in practice

Effective lifting capacity is affected by specific conditions, mainly (from most important):
  • Clearance – the presence of any layer (rust, tape, gap) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
  • Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of nominal force).
  • Metal thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of generating force.
  • Material type – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
  • Base smoothness – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
  • Temperature – heating the magnet causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under perpendicular forces, in contrast under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet and the plate lowers the holding force.

Safe handling of neodymium magnets
Medical interference

Life threat: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.

This is not a toy

Absolutely keep magnets out of reach of children. Choking hazard is significant, and the effects of magnets connecting inside the body are tragic.

Finger safety

Risk of injury: The attraction force is so immense that it can result in hematomas, crushing, and broken bones. Protective gloves are recommended.

Risk of cracking

Beware of splinters. Magnets can explode upon violent connection, ejecting shards into the air. We recommend safety glasses.

Skin irritation risks

Medical facts indicate that the nickel plating (the usual finish) is a strong allergen. For allergy sufferers, avoid touching magnets with bare hands or select coated magnets.

Precision electronics

Remember: neodymium magnets produce a field that disrupts sensitive sensors. Maintain a separation from your phone, tablet, and navigation systems.

Respect the power

Handle with care. Rare earth magnets act from a long distance and snap with massive power, often faster than you can move away.

Safe distance

Avoid bringing magnets near a purse, laptop, or TV. The magnetism can destroy these devices and wipe information from cards.

Permanent damage

Avoid heat. NdFeB magnets are susceptible to heat. If you require operation above 80°C, inquire about HT versions (H, SH, UH).

Do not drill into magnets

Powder created during machining of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Security! Learn more about hazards in the article: Magnet Safety Guide.