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
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Technical - 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 simulation of the magnet - technical parameters
Presented values represent the outcome of a mathematical calculation. Values rely on algorithms for the material Nd2Fe14B. Operational performance may deviate from the simulation results. Please consider these calculations as a reference point when designing systems.
Table 1: Static force (pull 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 pounds
1480.0 g / 14.5 N
|
weak grip |
| 1 mm |
1565 Gs
156.5 mT
|
1.25 kg / 2.76 pounds
1251.7 g / 12.3 N
|
weak grip |
| 2 mm |
1373 Gs
137.3 mT
|
0.96 kg / 2.12 pounds
962.5 g / 9.4 N
|
weak grip |
| 3 mm |
1161 Gs
116.1 mT
|
0.69 kg / 1.52 pounds
688.9 g / 6.8 N
|
weak grip |
| 5 mm |
780 Gs
78.0 mT
|
0.31 kg / 0.69 pounds
311.0 g / 3.1 N
|
weak grip |
| 10 mm |
276 Gs
27.6 mT
|
0.04 kg / 0.09 pounds
39.0 g / 0.4 N
|
weak grip |
| 15 mm |
115 Gs
11.5 mT
|
0.01 kg / 0.01 pounds
6.7 g / 0.1 N
|
weak grip |
| 20 mm |
56 Gs
5.6 mT
|
0.00 kg / 0.00 pounds
1.6 g / 0.0 N
|
weak grip |
| 30 mm |
19 Gs
1.9 mT
|
0.00 kg / 0.00 pounds
0.2 g / 0.0 N
|
weak grip |
| 50 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
Table 2: Shear force (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 pounds
296.0 g / 2.9 N
|
| 1 mm | Stal (~0.2) |
0.25 kg / 0.55 pounds
250.0 g / 2.5 N
|
| 2 mm | Stal (~0.2) |
0.19 kg / 0.42 pounds
192.0 g / 1.9 N
|
| 3 mm | Stal (~0.2) |
0.14 kg / 0.30 pounds
138.0 g / 1.4 N
|
| 5 mm | Stal (~0.2) |
0.06 kg / 0.14 pounds
62.0 g / 0.6 N
|
| 10 mm | Stal (~0.2) |
0.01 kg / 0.02 pounds
8.0 g / 0.1 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
2.0 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: Vertical assembly (sliding) - vertical pull
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 pounds
444.0 g / 4.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.30 kg / 0.65 pounds
296.0 g / 2.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.15 kg / 0.33 pounds
148.0 g / 1.5 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.74 kg / 1.63 pounds
740.0 g / 7.3 N
|
Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 14x2 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.15 kg / 0.33 pounds
148.0 g / 1.5 N
|
| 1 mm |
|
0.37 kg / 0.82 pounds
370.0 g / 3.6 N
|
| 2 mm |
|
0.74 kg / 1.63 pounds
740.0 g / 7.3 N
|
| 3 mm |
|
1.11 kg / 2.45 pounds
1110.0 g / 10.9 N
|
| 5 mm |
|
1.48 kg / 3.26 pounds
1480.0 g / 14.5 N
|
| 10 mm |
|
1.48 kg / 3.26 pounds
1480.0 g / 14.5 N
|
| 11 mm |
|
1.48 kg / 3.26 pounds
1480.0 g / 14.5 N
|
| 12 mm |
|
1.48 kg / 3.26 pounds
1480.0 g / 14.5 N
|
Table 5: Thermal resistance (material behavior) - 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 pounds
1480.0 g / 14.5 N
|
OK |
| 40 °C | -2.2% |
1.45 kg / 3.19 pounds
1447.4 g / 14.2 N
|
OK |
| 60 °C | -4.4% |
1.41 kg / 3.12 pounds
1414.9 g / 13.9 N
|
|
| 80 °C | -6.6% |
1.38 kg / 3.05 pounds
1382.3 g / 13.6 N
|
|
| 100 °C | -28.8% |
1.05 kg / 2.32 pounds
1053.8 g / 10.3 N
|
Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 14x2 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
2.75 kg / 6.06 pounds
3 073 Gs
|
0.41 kg / 0.91 pounds
413 g / 4.0 N
|
N/A |
| 1 mm |
2.56 kg / 5.65 pounds
3 287 Gs
|
0.38 kg / 0.85 pounds
385 g / 3.8 N
|
2.31 kg / 5.09 pounds
~0 Gs
|
| 2 mm |
2.33 kg / 5.13 pounds
3 131 Gs
|
0.35 kg / 0.77 pounds
349 g / 3.4 N
|
2.09 kg / 4.61 pounds
~0 Gs
|
| 3 mm |
2.06 kg / 4.54 pounds
2 947 Gs
|
0.31 kg / 0.68 pounds
309 g / 3.0 N
|
1.85 kg / 4.09 pounds
~0 Gs
|
| 5 mm |
1.52 kg / 3.36 pounds
2 535 Gs
|
0.23 kg / 0.50 pounds
229 g / 2.2 N
|
1.37 kg / 3.02 pounds
~0 Gs
|
| 10 mm |
0.58 kg / 1.27 pounds
1 561 Gs
|
0.09 kg / 0.19 pounds
87 g / 0.9 N
|
0.52 kg / 1.15 pounds
~0 Gs
|
| 20 mm |
0.07 kg / 0.16 pounds
552 Gs
|
0.01 kg / 0.02 pounds
11 g / 0.1 N
|
0.07 kg / 0.14 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
62 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
38 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
25 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
17 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
12 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
9 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Protective zones (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 |
| Phone / Smartphone | 40 Gs (4.0 mT) | 2.5 cm |
| Remote | 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: Collisions (cracking risk) - collision effects
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: Coating parameters (durability)
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: Electrical 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. Vertical hold
*Note: On a vertical wall, the magnet retains just approx. 20-30% of its nominal pull.
2. Plate thickness effect
*Thin steel (e.g. computer case) severely weakens the holding force.
3. Thermal stability
*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) = 0.22
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.
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Advantages and disadvantages of rare earth magnets.
Pros
- Their strength is durable, and after around 10 years it decreases only by ~1% (according to research),
- They possess excellent resistance to magnetism drop as a result of external magnetic sources,
- By covering with a reflective coating of silver, the element has an professional look,
- Magnetic induction on the working part of the magnet turns out to be extremely intense,
- Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for functioning at temperatures reaching 230°C and above...
- Possibility of exact forming and adapting to defined conditions,
- Wide application in future technologies – they find application in hard drives, brushless drives, medical equipment, also modern systems.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which makes them useful in small systems
Cons
- At very strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as 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
- When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
- Limited possibility of producing nuts in the magnet and complicated forms - preferred is casing - mounting mechanism.
- Potential hazard related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small components of these devices are able to disrupt the diagnostic process medical after entering the body.
- High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities
Pull force analysis
Breakaway strength of the magnet in ideal conditions – what it depends on?
- on a base made of structural steel, optimally conducting the magnetic field
- with a cross-section no less than 10 mm
- with a surface cleaned and smooth
- under conditions of gap-free contact (surface-to-surface)
- for force applied at a right angle (in the magnet axis)
- in temp. approx. 20°C
Magnet lifting force in use – key factors
- Clearance – the presence of foreign body (paint, dirt, gap) acts as an insulator, which lowers capacity rapidly (even by 50% at 0.5 mm).
- Load vector – maximum parameter is reached only during perpendicular pulling. The force required to slide of the magnet along the surface is standardly several times lower (approx. 1/5 of the lifting capacity).
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
- Metal type – not every steel attracts identically. High carbon content worsen the interaction with the magnet.
- Base smoothness – the more even the surface, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
- Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently damage the magnet.
Lifting capacity testing was performed on a smooth plate of optimal thickness, under a perpendicular pulling force, whereas under parallel forces the load capacity is reduced by as much as fivefold. Additionally, even a slight gap between the magnet’s surface and the plate decreases the holding force.
Precautions when working with NdFeB magnets
Material brittleness
Despite the nickel coating, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.
Caution required
Handle magnets consciously. Their powerful strength can shock even experienced users. Be vigilant and respect their force.
No play value
Only for adults. Small elements pose a choking risk, causing serious injuries. Store away from children and animals.
Do not overheat magnets
Do not overheat. NdFeB magnets are sensitive to temperature. If you require resistance above 80°C, ask us about special high-temperature series (H, SH, UH).
Allergy Warning
It is widely known that nickel (the usual finish) is a common allergen. If you have an allergy, avoid direct skin contact and select encased magnets.
Pinching danger
Pinching hazard: The pulling power is so great that it can cause hematomas, crushing, and broken bones. Protective gloves are recommended.
Safe distance
Powerful magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Stay away of at least 10 cm.
Combustion hazard
Fire hazard: Neodymium dust is explosive. Avoid machining magnets without safety gear as this may cause fire.
Precision electronics
Navigation devices and smartphones are extremely sensitive to magnetism. Direct contact with a powerful NdFeB magnet can decalibrate the sensors in your phone.
Medical implants
Life threat: Neodymium magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.
