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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

7.36 with VAT / pcs + price for transport

5.98 ZŁ net + 23% VAT / pcs

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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 assembly - report

The following values represent the result of a physical calculation. Results rely on models for the class Nd2Fe14B. Operational performance may differ from theoretical values. Treat these data as a reference point when designing systems.

Table 1: Static pull force (force vs gap) - power drop
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

Table 2: Slippage hold (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

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
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

Table 4: Material efficiency (saturation) - sheet metal selection
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

Table 5: Thermal resistance (stability) - power drop
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

Table 6: Magnet-Magnet interaction (repulsion) - field collision
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

Table 7: Safety (HSE) (electronics) - precautionary measures
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
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

Table 8: Impact energy (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

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)

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)

Table 11: Hydrostatics and buoyancy
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%
Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Sliding resistance

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

2. Steel saturation

*Thin metal sheet (e.g. computer case) severely limits the holding force.

3. Power loss vs temp

*For N38 grade, the critical limit 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
Elemental analysis
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: 010035-2026
Magnet Unit Converter
Force (pull)

Magnetic Induction

Other deals

The offered product is an extremely powerful cylindrical magnet, composed of advanced NdFeB material, which, at dimensions of Ø16x9 mm, guarantees maximum efficiency. This specific item boasts a tolerance of ±0.1mm and professional build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 8.53 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is ideal for building electric motors, 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 cylindrical magnet is indispensable in miniature devices 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., 16.1 mm) using two-component epoxy glues. To ensure long-term durability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Magnets NdFeB grade N38 are strong enough for the majority of applications in modeling 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 store.
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 oxidation, 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 and weaknesses of Nd2Fe14B magnets.

Benefits

Apart from their superior magnetic energy, neodymium magnets have these key benefits:
  • They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
  • They maintain their magnetic properties even under strong external field,
  • The use of an refined coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • Neodymium magnets create maximum magnetic induction on a small area, which increases force concentration,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
  • Thanks to flexibility in designing and the ability to adapt to complex applications,
  • Key role in electronics industry – they serve a role in magnetic memories, electromotive mechanisms, advanced medical instruments, also technologically advanced constructions.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Cons

Drawbacks and weaknesses of neodymium magnets: weaknesses and usage proposals
  • To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
  • Due to limitations in creating nuts and complex shapes in magnets, we propose using casing - magnetic holder.
  • Potential hazard to health – tiny shards of magnets are risky, when accidentally swallowed, which is particularly important in the context of child health protection. Furthermore, small elements of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
  • Due to complex production process, their price exceeds standard values,

Holding force characteristics

Breakaway strength of the magnet in ideal conditionswhat it depends on?

Breakaway force was defined for ideal contact conditions, assuming:
  • on a plate made of mild steel, perfectly concentrating the magnetic field
  • possessing a massiveness of minimum 10 mm to ensure full flux closure
  • with an ideally smooth contact surface
  • without any clearance between the magnet and steel
  • during detachment in a direction vertical to the mounting surface
  • in neutral thermal conditions

What influences lifting capacity in practice

It is worth knowing that the application force will differ depending on elements below, starting with the most relevant:
  • Gap (between the magnet and the plate), as even a very small clearance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to paint, corrosion or dirt).
  • Load vector – maximum parameter is reached only during perpendicular pulling. The resistance to sliding of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
  • Base massiveness – insufficiently thick plate causes magnetic saturation, causing part of the power to be wasted into the air.
  • Metal type – different alloys reacts the same. High carbon content weaken the interaction with the magnet.
  • Surface structure – the more even the surface, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
  • Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate reduces the load capacity.

Warnings
Heat warning

Standard neodymium magnets (grade N) lose power when the temperature exceeds 80°C. This process is irreversible.

Conscious usage

Be careful. Rare earth magnets attract from a long distance and snap with massive power, often quicker than you can react.

Hand protection

Large magnets can smash fingers in a fraction of a second. Under no circumstances put your hand betwixt two attracting surfaces.

Protect data

Powerful magnetic fields can erase data on credit cards, hard drives, and storage devices. Keep a distance of min. 10 cm.

GPS and phone interference

Be aware: neodymium magnets produce a field that interferes with sensitive sensors. Maintain a safe distance from your mobile, device, and GPS.

Allergic reactions

A percentage of the population have a contact allergy to Ni, which is the standard coating for neodymium magnets. Frequent touching can result in dermatitis. It is best to wear safety gloves.

Pacemakers

People with a ICD should maintain an large gap from magnets. The magnetism can disrupt the operation of the life-saving device.

Swallowing risk

Neodymium magnets are not suitable for play. Accidental ingestion of several magnets can lead to them attracting across intestines, which poses a severe health hazard and necessitates urgent medical intervention.

Fire warning

Machining of neodymium magnets carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Fragile material

Protect your eyes. Magnets can fracture upon violent connection, ejecting shards into the air. We recommend safety glasses.

Attention! More info about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98