MW 14x10 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010391
GTIN/EAN: 5906301811084
Diameter Ø
14 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
11.55 g
Magnetization Direction
↑ axial
Load capacity
6.71 kg / 65.83 N
Magnetic Induction
507.48 mT / 5075 Gs
Coating
[NiCuNi] Nickel
6.84 ZŁ with VAT / pcs + price for transport
5.56 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical of the product - MW 14x10 / N38 - cylindrical magnet
Specification / characteristics - MW 14x10 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010391 |
| GTIN/EAN | 5906301811084 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 14 mm [±0,1 mm] |
| Height | 10 mm [±0,1 mm] |
| Weight | 11.55 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 6.71 kg / 65.83 N |
| Magnetic Induction ~ ? | 507.48 mT / 5075 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 |
Technical modeling of the magnet - data
These values represent the outcome of a physical calculation. Values rely on algorithms for the class Nd2Fe14B. Operational parameters might slightly differ from theoretical values. Please consider these data as a reference point during assembly planning.
Table 1: Static pull force (force vs gap) - interaction chart
MW 14x10 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
5072 Gs
507.2 mT
|
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
|
strong |
| 1 mm |
4354 Gs
435.4 mT
|
4.94 kg / 10.90 LBS
4944.4 g / 48.5 N
|
strong |
| 2 mm |
3652 Gs
365.2 mT
|
3.48 kg / 7.67 LBS
3479.0 g / 34.1 N
|
strong |
| 3 mm |
3017 Gs
301.7 mT
|
2.37 kg / 5.23 LBS
2373.5 g / 23.3 N
|
strong |
| 5 mm |
2015 Gs
201.5 mT
|
1.06 kg / 2.33 LBS
1058.7 g / 10.4 N
|
low risk |
| 10 mm |
773 Gs
77.3 mT
|
0.16 kg / 0.34 LBS
155.7 g / 1.5 N
|
low risk |
| 15 mm |
352 Gs
35.2 mT
|
0.03 kg / 0.07 LBS
32.3 g / 0.3 N
|
low risk |
| 20 mm |
186 Gs
18.6 mT
|
0.01 kg / 0.02 LBS
9.0 g / 0.1 N
|
low risk |
| 30 mm |
69 Gs
6.9 mT
|
0.00 kg / 0.00 LBS
1.3 g / 0.0 N
|
low risk |
| 50 mm |
18 Gs
1.8 mT
|
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
|
low risk |
Table 2: Sliding capacity (vertical surface)
MW 14x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
1.34 kg / 2.96 LBS
1342.0 g / 13.2 N
|
| 1 mm | Stal (~0.2) |
0.99 kg / 2.18 LBS
988.0 g / 9.7 N
|
| 2 mm | Stal (~0.2) |
0.70 kg / 1.53 LBS
696.0 g / 6.8 N
|
| 3 mm | Stal (~0.2) |
0.47 kg / 1.04 LBS
474.0 g / 4.6 N
|
| 5 mm | Stal (~0.2) |
0.21 kg / 0.47 LBS
212.0 g / 2.1 N
|
| 10 mm | Stal (~0.2) |
0.03 kg / 0.07 LBS
32.0 g / 0.3 N
|
| 15 mm | Stal (~0.2) |
0.01 kg / 0.01 LBS
6.0 g / 0.1 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
2.0 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: Vertical assembly (shearing) - behavior on slippery surfaces
MW 14x10 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
2.01 kg / 4.44 LBS
2013.0 g / 19.7 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
1.34 kg / 2.96 LBS
1342.0 g / 13.2 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.67 kg / 1.48 LBS
671.0 g / 6.6 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
3.36 kg / 7.40 LBS
3355.0 g / 32.9 N
|
Table 4: Steel thickness (saturation) - sheet metal selection
MW 14x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.67 kg / 1.48 LBS
671.0 g / 6.6 N
|
| 1 mm |
|
1.68 kg / 3.70 LBS
1677.5 g / 16.5 N
|
| 2 mm |
|
3.36 kg / 7.40 LBS
3355.0 g / 32.9 N
|
| 3 mm |
|
5.03 kg / 11.09 LBS
5032.5 g / 49.4 N
|
| 5 mm |
|
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
|
| 10 mm |
|
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
|
| 11 mm |
|
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
|
| 12 mm |
|
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
|
Table 5: Thermal stability (stability) - resistance threshold
MW 14x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
6.71 kg / 14.79 LBS
6710.0 g / 65.8 N
|
OK |
| 40 °C | -2.2% |
6.56 kg / 14.47 LBS
6562.4 g / 64.4 N
|
OK |
| 60 °C | -4.4% |
6.41 kg / 14.14 LBS
6414.8 g / 62.9 N
|
OK |
| 80 °C | -6.6% |
6.27 kg / 13.82 LBS
6267.1 g / 61.5 N
|
|
| 100 °C | -28.8% |
4.78 kg / 10.53 LBS
4777.5 g / 46.9 N
|
Table 6: Two magnets (repulsion) - field range
MW 14x10 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
24.41 kg / 53.82 LBS
5 843 Gs
|
3.66 kg / 8.07 LBS
3662 g / 35.9 N
|
N/A |
| 1 mm |
21.12 kg / 46.55 LBS
9 434 Gs
|
3.17 kg / 6.98 LBS
3167 g / 31.1 N
|
19.00 kg / 41.90 LBS
~0 Gs
|
| 2 mm |
17.99 kg / 39.66 LBS
8 708 Gs
|
2.70 kg / 5.95 LBS
2699 g / 26.5 N
|
16.19 kg / 35.70 LBS
~0 Gs
|
| 3 mm |
15.16 kg / 33.43 LBS
7 994 Gs
|
2.27 kg / 5.01 LBS
2274 g / 22.3 N
|
13.65 kg / 30.08 LBS
~0 Gs
|
| 5 mm |
10.49 kg / 23.12 LBS
6 649 Gs
|
1.57 kg / 3.47 LBS
1573 g / 15.4 N
|
9.44 kg / 20.81 LBS
~0 Gs
|
| 10 mm |
3.85 kg / 8.49 LBS
4 029 Gs
|
0.58 kg / 1.27 LBS
578 g / 5.7 N
|
3.47 kg / 7.64 LBS
~0 Gs
|
| 20 mm |
0.57 kg / 1.25 LBS
1 545 Gs
|
0.08 kg / 0.19 LBS
85 g / 0.8 N
|
0.51 kg / 1.12 LBS
~0 Gs
|
| 50 mm |
0.01 kg / 0.02 LBS
218 Gs
|
0.00 kg / 0.00 LBS
2 g / 0.0 N
|
0.01 kg / 0.02 LBS
~0 Gs
|
| 60 mm |
0.00 kg / 0.01 LBS
139 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 / 0.00 LBS
93 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
66 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
48 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
36 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 14x10 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 8.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 6.5 cm |
| Timepiece | 20 Gs (2.0 mT) | 5.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 4.0 cm |
| Car key | 50 Gs (5.0 mT) | 3.5 cm |
| Payment card | 400 Gs (40.0 mT) | 1.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.5 cm |
Table 8: Dynamics (cracking risk) - collision effects
MW 14x10 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
24.66 km/h
(6.85 m/s)
|
0.27 J | |
| 30 mm |
42.11 km/h
(11.70 m/s)
|
0.79 J | |
| 50 mm |
54.36 km/h
(15.10 m/s)
|
1.32 J | |
| 100 mm |
76.87 km/h
(21.35 m/s)
|
2.63 J |
Table 9: Coating parameters (durability)
MW 14x10 / 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 (Pc)
MW 14x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 7 886 Mx | 78.9 µWb |
| Pc Coefficient | 0.74 | High (Stable) |
Table 11: Physics of underwater searching
MW 14x10 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 6.71 kg | Standard |
| Water (riverbed) |
7.68 kg
(+0.97 kg buoyancy gain)
|
+14.5% |
1. Shear force
*Caution: On a vertical surface, the magnet holds only a fraction of its perpendicular strength.
2. Efficiency vs thickness
*Thin steel (e.g. 0.5mm PC case) severely limits the holding force.
3. Heat tolerance
*For N38 grade, the max working temp is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.74
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.
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 rare earth magnets.
Strengths
- They have unchanged lifting capacity, and over more than ten years their attraction force decreases symbolically – ~1% (in testing),
- Neodymium magnets are highly resistant to magnetic field loss caused by magnetic disturbances,
- The use of an refined finish of noble metals (nickel, gold, silver) causes the element to look better,
- Magnets are characterized by impressive magnetic induction on the working surface,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
- Possibility of accurate machining and adjusting to atypical needs,
- Universal use in innovative solutions – they find application in mass storage devices, motor assemblies, precision medical tools, and other advanced devices.
- Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,
Cons
- Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a special holder, which not only protects them against impacts but also raises their durability
- Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- Limited possibility of creating nuts in the magnet and complicated forms - preferred is casing - mounting mechanism.
- Possible danger related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that small components of these products are able to be problematic in diagnostics medical after entering the body.
- Due to neodymium price, their price is relatively high,
Pull force analysis
Maximum lifting capacity of the magnet – what contributes to it?
- using a sheet made of low-carbon steel, functioning as a circuit closing element
- whose transverse dimension reaches at least 10 mm
- characterized by even structure
- with zero gap (without impurities)
- under axial force vector (90-degree angle)
- at conditions approx. 20°C
Practical lifting capacity: influencing factors
- Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
- Material type – ideal substrate is high-permeability steel. Hardened steels may have worse magnetic properties.
- Surface quality – the more even the plate, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
- Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).
Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, whereas under parallel forces the load capacity is reduced by as much as fivefold. In addition, even a slight gap between the magnet and the plate reduces the load capacity.
Warnings
Hand protection
Risk of injury: The pulling power is so immense that it can cause blood blisters, pinching, and broken bones. Protective gloves are recommended.
Threat to navigation
A powerful magnetic field interferes with the functioning of magnetometers in phones and GPS navigation. Keep magnets near a device to avoid damaging the sensors.
Combustion hazard
Dust created during grinding of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.
Protective goggles
Despite the nickel coating, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
Thermal limits
Do not overheat. NdFeB magnets are susceptible to temperature. If you require operation above 80°C, look for special high-temperature series (H, SH, UH).
Do not underestimate power
Before use, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.
Nickel coating and allergies
Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If an allergic reaction appears, cease handling magnets and wear gloves.
Keep away from computers
Do not bring magnets near a purse, laptop, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.
Product not for children
Always store magnets away from children. Choking hazard is high, and the consequences of magnets clamping inside the body are very dangerous.
Life threat
People with a pacemaker should keep an large gap from magnets. The magnetic field can disrupt the operation of the life-saving device.
