MW 14x2 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010024
GTIN/EAN: 5906301810230
Diameter Ø
14 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
2.31 g
Magnetization Direction
↑ axial
Load capacity
1.48 kg / 14.51 N
Magnetic Induction
170.27 mT / 1703 Gs
Coating
[NiCuNi] Nickel
0.898 ZŁ with VAT / pcs + price for transport
0.730 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical specification - MW 14x2 / N38 - cylindrical magnet
Specification / characteristics - MW 14x2 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010024 |
| GTIN/EAN | 5906301810230 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 14 mm [±0,1 mm] |
| Height | 2 mm [±0,1 mm] |
| Weight | 2.31 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 1.48 kg / 14.51 N |
| Magnetic Induction ~ ? | 170.27 mT / 1703 Gs |
| Coating | [NiCuNi] Nickel |
| Manufacturing Tolerance | ±0.1 mm |
Magnetic properties of material N38
| 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
| 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 - data
Presented information represent the direct effect of a mathematical simulation. Results were calculated on algorithms for the class Nd2Fe14B. Operational parameters might slightly deviate from the simulation results. Treat these calculations as a preliminary roadmap for designers.
Table 1: Static pull force (force vs gap) - interaction chart
MW 14x2 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
1702 Gs
170.2 mT
|
1.48 kg / 3.26 lbs
1480.0 g / 14.5 N
|
low risk |
| 1 mm |
1565 Gs
156.5 mT
|
1.25 kg / 2.76 lbs
1251.7 g / 12.3 N
|
low risk |
| 2 mm |
1373 Gs
137.3 mT
|
0.96 kg / 2.12 lbs
962.5 g / 9.4 N
|
low risk |
| 3 mm |
1161 Gs
116.1 mT
|
0.69 kg / 1.52 lbs
688.9 g / 6.8 N
|
low risk |
| 5 mm |
780 Gs
78.0 mT
|
0.31 kg / 0.69 lbs
311.0 g / 3.1 N
|
low risk |
| 10 mm |
276 Gs
27.6 mT
|
0.04 kg / 0.09 lbs
39.0 g / 0.4 N
|
low risk |
| 15 mm |
115 Gs
11.5 mT
|
0.01 kg / 0.01 lbs
6.7 g / 0.1 N
|
low risk |
| 20 mm |
56 Gs
5.6 mT
|
0.00 kg / 0.00 lbs
1.6 g / 0.0 N
|
low risk |
| 30 mm |
19 Gs
1.9 mT
|
0.00 kg / 0.00 lbs
0.2 g / 0.0 N
|
low risk |
| 50 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
Table 2: Slippage hold (vertical surface)
MW 14x2 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.30 kg / 0.65 lbs
296.0 g / 2.9 N
|
| 1 mm | Stal (~0.2) |
0.25 kg / 0.55 lbs
250.0 g / 2.5 N
|
| 2 mm | Stal (~0.2) |
0.19 kg / 0.42 lbs
192.0 g / 1.9 N
|
| 3 mm | Stal (~0.2) |
0.14 kg / 0.30 lbs
138.0 g / 1.4 N
|
| 5 mm | Stal (~0.2) |
0.06 kg / 0.14 lbs
62.0 g / 0.6 N
|
| 10 mm | Stal (~0.2) |
0.01 kg / 0.02 lbs
8.0 g / 0.1 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 lbs
2.0 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: Wall mounting (shearing) - behavior on slippery surfaces
MW 14x2 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.44 kg / 0.98 lbs
444.0 g / 4.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.30 kg / 0.65 lbs
296.0 g / 2.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.15 kg / 0.33 lbs
148.0 g / 1.5 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.74 kg / 1.63 lbs
740.0 g / 7.3 N
|
Table 4: Steel thickness (saturation) - power losses
MW 14x2 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.15 kg / 0.33 lbs
148.0 g / 1.5 N
|
| 1 mm |
|
0.37 kg / 0.82 lbs
370.0 g / 3.6 N
|
| 2 mm |
|
0.74 kg / 1.63 lbs
740.0 g / 7.3 N
|
| 3 mm |
|
1.11 kg / 2.45 lbs
1110.0 g / 10.9 N
|
| 5 mm |
|
1.48 kg / 3.26 lbs
1480.0 g / 14.5 N
|
| 10 mm |
|
1.48 kg / 3.26 lbs
1480.0 g / 14.5 N
|
| 11 mm |
|
1.48 kg / 3.26 lbs
1480.0 g / 14.5 N
|
| 12 mm |
|
1.48 kg / 3.26 lbs
1480.0 g / 14.5 N
|
Table 5: Thermal resistance (stability) - thermal limit
MW 14x2 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.48 kg / 3.26 lbs
1480.0 g / 14.5 N
|
OK |
| 40 °C | -2.2% |
1.45 kg / 3.19 lbs
1447.4 g / 14.2 N
|
OK |
| 60 °C | -4.4% |
1.41 kg / 3.12 lbs
1414.9 g / 13.9 N
|
|
| 80 °C | -6.6% |
1.38 kg / 3.05 lbs
1382.3 g / 13.6 N
|
|
| 100 °C | -28.8% |
1.05 kg / 2.32 lbs
1053.8 g / 10.3 N
|
Table 6: Two magnets (attraction) - forces in the system
MW 14x2 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
2.75 kg / 6.06 lbs
3 073 Gs
|
0.41 kg / 0.91 lbs
413 g / 4.0 N
|
N/A |
| 1 mm |
2.56 kg / 5.65 lbs
3 287 Gs
|
0.38 kg / 0.85 lbs
385 g / 3.8 N
|
2.31 kg / 5.09 lbs
~0 Gs
|
| 2 mm |
2.33 kg / 5.13 lbs
3 131 Gs
|
0.35 kg / 0.77 lbs
349 g / 3.4 N
|
2.09 kg / 4.61 lbs
~0 Gs
|
| 3 mm |
2.06 kg / 4.54 lbs
2 947 Gs
|
0.31 kg / 0.68 lbs
309 g / 3.0 N
|
1.85 kg / 4.09 lbs
~0 Gs
|
| 5 mm |
1.52 kg / 3.36 lbs
2 535 Gs
|
0.23 kg / 0.50 lbs
229 g / 2.2 N
|
1.37 kg / 3.02 lbs
~0 Gs
|
| 10 mm |
0.58 kg / 1.27 lbs
1 561 Gs
|
0.09 kg / 0.19 lbs
87 g / 0.9 N
|
0.52 kg / 1.15 lbs
~0 Gs
|
| 20 mm |
0.07 kg / 0.16 lbs
552 Gs
|
0.01 kg / 0.02 lbs
11 g / 0.1 N
|
0.07 kg / 0.14 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 lbs
62 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
38 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
25 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
17 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
12 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
9 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
Table 7: Hazards (implants) - warnings
MW 14x2 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 5.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 4.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 3.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 2.5 cm |
| Car key | 50 Gs (5.0 mT) | 2.5 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 14x2 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
25.94 km/h
(7.21 m/s)
|
0.06 J | |
| 30 mm |
44.22 km/h
(12.28 m/s)
|
0.17 J | |
| 50 mm |
57.08 km/h
(15.86 m/s)
|
0.29 J | |
| 100 mm |
80.72 km/h
(22.42 m/s)
|
0.58 J |
Table 9: Corrosion resistance
MW 14x2 / 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 14x2 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 3 247 Mx | 32.5 µWb |
| Pc Coefficient | 0.22 | Low (Flat) |
Table 11: Submerged application
MW 14x2 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 1.48 kg | Standard |
| Water (riverbed) |
1.69 kg
(+0.21 kg buoyancy gain)
|
+14.5% |
1. Wall mount (shear)
*Caution: On a vertical surface, the magnet retains just a fraction of its perpendicular strength.
2. Plate thickness effect
*Thin steel (e.g. 0.5mm PC case) drastically weakens the holding force.
3. Heat tolerance
*For N38 material, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.22
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.
Material specification
| 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 |
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Strengths and weaknesses of neodymium magnets.
Advantages
- They retain magnetic properties for almost 10 years – the drop is just ~1% (based on simulations),
- They feature excellent resistance to magnetic field loss due to external fields,
- A magnet with a smooth silver surface is more attractive,
- The surface of neodymium magnets generates a concentrated magnetic field – this is a key feature,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Thanks to the ability of free molding and customization to specialized needs, NdFeB magnets can be produced in a variety of forms and dimensions, which makes them more universal,
- Universal use in electronics industry – they are utilized in data components, motor assemblies, advanced medical instruments, as well as complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which allows their use in miniature devices
Disadvantages
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a strong case, which not only protects them against impacts but also increases their durability
- Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Due to limitations in producing threads and complicated forms in magnets, we propose using cover - magnetic mechanism.
- Possible danger resulting from small fragments of magnets are risky, in case of ingestion, which gains importance in the context of child health protection. Furthermore, small elements of these products can complicate diagnosis medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Holding force characteristics
Best holding force of the magnet in ideal parameters – what affects it?
- on a base made of mild steel, effectively closing the magnetic flux
- whose transverse dimension is min. 10 mm
- with a plane free of scratches
- with total lack of distance (without coatings)
- for force acting at a right angle (in the magnet axis)
- in stable room temperature
Determinants of lifting force in real conditions
- Space between surfaces – every millimeter of separation (caused e.g. by veneer or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
- Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Steel type – low-carbon steel attracts best. Alloy admixtures reduce magnetic permeability and lifting capacity.
- Surface quality – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
- Temperature influence – hot environment reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity testing was conducted on a smooth plate of suitable thickness, under perpendicular forces, whereas under shearing force the holding force is lower. In addition, even a small distance between the magnet and the plate lowers the load capacity.
H&S for magnets
Thermal limits
Avoid heat. NdFeB magnets are susceptible to heat. If you need operation above 80°C, inquire about special high-temperature series (H, SH, UH).
Material brittleness
Watch out for shards. Magnets can explode upon violent connection, ejecting shards into the air. We recommend safety glasses.
Combustion hazard
Machining of neodymium magnets carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.
Phone sensors
GPS units and mobile phones are extremely sensitive to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.
Crushing risk
Pinching hazard: The pulling power is so great that it can result in blood blisters, pinching, and broken bones. Use thick gloves.
Protect data
Do not bring magnets close to a wallet, computer, or screen. The magnetic field can permanently damage these devices and erase data from cards.
This is not a toy
NdFeB magnets are not toys. Accidental ingestion of a few magnets may result in them connecting inside the digestive tract, which constitutes a severe health hazard and necessitates immediate surgery.
Nickel coating and allergies
Medical facts indicate that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, refrain from direct skin contact and select versions in plastic housing.
Implant safety
Health Alert: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.
Safe operation
Before starting, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.
