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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 properties »

7.36 ZŁ with VAT / pcs + price for transport

5.98 ZŁ net + 23% VAT / pcs

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Technical details - 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 simulation of the product - technical parameters

Presented values are the direct effect of a engineering analysis. Values were calculated on algorithms for the material Nd2Fe14B. Real-world conditions may differ. Please consider these data as a reference point during assembly planning.

Table 1: Static force (force vs gap) - interaction chart
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
 warning
1 mm 4072 Gs
407.2 mT
 6.60 kg / 14.56 LBS
6603.5 g / 64.8 N
 warning
2 mm 3510 Gs
351.0 mT
 4.91 kg / 10.82 LBS
4906.8 g / 48.1 N
 warning
3 mm 2982 Gs
298.2 mT
 3.54 kg / 7.80 LBS
3540.1 g / 34.7 N
 warning
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
Grip strength weakens sharply per each millimeter of distance. Keep in mind that every additional insulation layer (e.g., dirt, paint, veneer) noticeably diminishes the holding power. Neodymiums work optimally in perfect adhesion; gap nullifies the force. See how quickly the pull force drop, when the product does not touch tightly to the steel surface. When designing the assembly, avoid redundant distances.

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
The following data indicates the estimated shear load necessary to cause the slippage of the magnet vertically along a vertical steel wall (considering standard friction). This parameter depends on the distance between the magnet and the metal.

Table 3: Wall mounting (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 magnet on a upright surface (e.g., a fridge), it will only hold just about 20%-30% of nominal attraction strength. Gravity and a weak degree of grip mean that products slide down easier than they detach. Planning a hanger? Remember that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the magnet will slip down under a much lighter weight. Application of an anti-slip layer can effectively improve the result.

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 metal plate is not enough to absorb the entire magnetic field, which squanders power of the holder. Should you install a neodymium to a thin surface, the magnetism will pass right through and the pull force will drop sharply. To squeeze full efficiency of this neodymium's power, you need a suitably thick backing of steel. The material oversaturation means that on thin elements (e.g., car bodies), the product works worse. We advise picking the steel cross-section based on the following data.

Table 5: Thermal stability (stability) - 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
Ordinary NdFeB products lose strength after exceeding the maximum temperature. Watch out for overheating – excessive heat can permanently damage this product. With every degree above norm, the neodymium's force briefly drops. Refrain from using this product near heat sources higher than its working range. Exceeding the critical threshold will lead to irreversible degradation of magnetism.
*Technical advisory: Temperature resistance is determined by both grade, but also on the magnet's shape. Flat magnets (low Pc) may lose charge permanently at lower temperatures than taller cylinders. Red status in the table signals permanent field degradation for this particular item.

Table 6: Two magnets (attraction) - forces in the system
MW 16x9 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (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 significantly greater distance than a neodymium and metal combination. The connection of two magnets creates a more powerful interaction and a further horizon of action. Want to build a powerful holder? Utilize two neodymiums instead of a neodymium and a steel. Be careful that when bringing together two magnets, the pinch force is huge. The repulsion force is slightly lower than the connection force, but still impressive.
*The magnetic induction for N-N configuration is approximately ~0 Gs at the geometric center between the magnets (due to field cancellation).
Important: Estimates apply to shear force of a pair of same magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (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
Timepiece 20 Gs (2.0 mT) 5.5 cm
Mobile device 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 poses a large risk to IT equipment as well as medical implants. These magnets generate a flux that disrupts operation of sensitive medical devices. Notice: the invisible magnetic field penetrates the body and glass. Special caution must be taken by people with cochlear implants and drug dispensers. Also at risk are: automatic timepieces, remotes, membranes, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Collisions (cracking risk) - warning
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
Neodymium magnets are very brittle – a violent impact against metal causes immediate chipping. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Kinetic force can destroy the magnet or painful pinches to skin. Be sure to control the product during mounting so it doesn't slam with momentum against the metal. A collision at high speed almost guarantees destruction of the magnet. Use safety goggles when working with large magnets.

Table 9: Corrosion resistance
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. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MW 16x9 / N38

Parameter Value SI Unit / Description
Magnetic Flux 9 394 Mx 93.9 µWb
Pc Coefficient 0.63 High (Stable)
Flux value passing through the magnet pole. Essential parameter in coil applications and motors. Pc value determines the magnet's operating point.

Table 11: Physics of underwater searching
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%
Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
The magnetic field penetrates through water without any losses. However, remember the water resistance when pulling the rope quickly.
1. Shear force

*Warning: On a vertical surface, the magnet retains only approx. 20-30% of its perpendicular strength.

2. Steel saturation

*Thin metal sheet (e.g. 0.5mm PC case) drastically weakens 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) = 0.63

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.

Technical and environmental data
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%
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: 010035-2026
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The presented product is an incredibly powerful cylindrical magnet, made from durable NdFeB material, which, at dimensions of Ø16x9 mm, guarantees maximum efficiency. This specific item is characterized by an accuracy of ±0.1mm and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 8.53 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating secures 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 field concentration 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 every gram matters.
Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 16.1 mm) using epoxy glues. To ensure long-term durability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability 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 (Ø16x9), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
This model is characterized by dimensions Ø16x9 mm, which, at a weight of 13.57 g, makes it an element with high magnetic energy density. 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 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 16 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.

Advantages and disadvantages of rare earth magnets.

Benefits

Besides their high retention, neodymium magnets are valued for these benefits:
  • Their strength remains stable, and after approximately ten years it decreases only by ~1% (theoretically),
  • Neodymium magnets are characterized by highly resistant to magnetic field loss caused by external field sources,
  • In other words, due to the shiny finish of gold, the element gains visual value,
  • They are known for high magnetic induction at the operating surface, which affects their effectiveness,
  • Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
  • Thanks to the potential of flexible shaping and adaptation to individualized needs, NdFeB magnets can be created in a broad palette of forms and dimensions, which increases their versatility,
  • Huge importance in advanced technology sectors – they are utilized in computer drives, electric motors, diagnostic systems, as well as multitasking production systems.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Cons

Disadvantages of NdFeB magnets:
  • To avoid cracks under impact, we recommend using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in producing threads and complex shapes in magnets, we recommend using cover - magnetic mount.
  • Possible danger resulting from small fragments of magnets are risky, if swallowed, which becomes key in the context of child safety. It is also worth noting that tiny parts of these products are able to complicate diagnosis medical after entering the body.
  • With budget limitations the cost of neodymium magnets is a challenge,

Lifting parameters

Best holding force of the magnet in ideal parameters – what it depends on?

Holding force of 8.53 kg is a result of laboratory testing conducted under specific, ideal conditions:
  • using a sheet made of mild steel, serving as a circuit closing element
  • possessing a massiveness of min. 10 mm to ensure full flux closure
  • characterized by even structure
  • with zero gap (no paint)
  • for force acting at a right angle (in the magnet axis)
  • in neutral thermal conditions

Determinants of practical lifting force of a magnet

During everyday use, the actual lifting capacity depends on several key aspects, ranked from most significant:
  • Distance – the presence of foreign body (rust, dirt, gap) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Steel thickness – insufficiently thick steel does not close the flux, causing part of the flux to be lost into the air.
  • Chemical composition of the base – mild steel attracts best. Alloy admixtures lower magnetic permeability and holding force.
  • Smoothness – full contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Temperature – heating the magnet results in weakening of induction. Check the maximum operating temperature for a given model.

Lifting capacity was determined by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Safe handling of neodymium magnets
Warning for heart patients

Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Product not for children

Adult use only. Small elements can be swallowed, leading to serious injuries. Keep out of reach of children and animals.

Crushing force

Mind your fingers. Two powerful magnets will join instantly with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Caution required

Handle magnets with awareness. Their huge power can surprise even experienced users. Plan your moves and respect their power.

Heat sensitivity

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

Material brittleness

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

Nickel coating and allergies

A percentage of the population have a sensitization to Ni, which is the typical protective layer for NdFeB magnets. Prolonged contact might lead to skin redness. It is best to wear protective gloves.

Phone sensors

Remember: rare earth magnets produce a field that interferes with precision electronics. Keep a safe distance from your mobile, device, and navigation systems.

Cards and drives

Powerful magnetic fields can destroy records on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

Mechanical processing

Dust created during machining of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.

Danger! Want to know more? Read our article: Are neodymium magnets dangerous?