MW 15x2 zestaw 480 szt. / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010565
GTIN/EAN: 5906301815570
- Diameter Ø
- 15 mm [±0,1 mm]
- Height
- 2 mm [±0,1 mm]
- Weight
- 1272 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
446.83 zł net / pcs
549.60 zł with VAT (23% VAT) / pcs
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Need more?Frequently asked questions
Where can I buy strong cylindrical neodymium magnets?
Can a small cylindrical magnet provide a strong grip for precise workshop work?
Which cylindrical magnet can work at a higher temperature?
Engineering report for this magnet
Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.
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Physical properties - MW 15x2 zestaw 480 szt. / N38 - cylindrical magnet
Specification / characteristics - MW 15x2 zestaw 480 szt. / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010565 |
| GTIN/EAN | 5906301815570 |
| Distributor | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 15 mm [±0,1 mm] |
| Height | 2 mm [±0,1 mm] |
| Weight | 1272 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 1.51 kg / 14.84 N |
| Magnetic Induction ~ ? | 159.70 mT / 1597 Gs |
| Coating | [NiCuNi] Nickel |
| Manufacturing Tolerance | ±0.1 mm |
Magnetic properties of material N38
| properties | values | units |
|---|---|---|
| Remanence Br ? | 12.2-12.6 | kGs |
| Remanence Br ? | 1220-1260 | mT |
| Coercivity bHc ? | 10.8-11.5 | kOe |
| Coercivity bHc ? | 860-915 | kA/m |
| Intrinsic coercivity iHc | ≥ 12 | kOe |
| Intrinsic coercivity iHc | ≥ 955 | kA/m |
| Energy product BHmax ? | 36-38 | BH max MGOe |
| Energy product BHmax ? | 287-303 | BH max KJ/m |
| Maximum working 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 | 310 | °C |
| Curie Temperature TF | 590 | °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 analysis of the assembly - data
The following values constitute the direct effect of a mathematical analysis. Results are based on models for the class Nd2Fe14B. Actual parameters may differ. Please consider these data as a reference point for designers.
Table 1: Static force (force vs gap) - power drop
MW 15x2 zestaw 480 szt. / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
1597 Gs
159.7 mT
|
1.51 kg / 3.33 LBS
1510.0 g / 14.8 N
|
safe |
| 1 mm |
1483 Gs
148.3 mT
|
1.30 kg / 2.87 LBS
1303.0 g / 12.8 N
|
safe |
| 2 mm |
1320 Gs
132.0 mT
|
1.03 kg / 2.28 LBS
1032.2 g / 10.1 N
|
safe |
| 3 mm |
1137 Gs
113.7 mT
|
0.77 kg / 1.69 LBS
765.0 g / 7.5 N
|
safe |
| 5 mm |
791 Gs
79.1 mT
|
0.37 kg / 0.82 LBS
370.8 g / 3.6 N
|
safe |
| 10 mm |
298 Gs
29.8 mT
|
0.05 kg / 0.12 LBS
52.5 g / 0.5 N
|
safe |
| 15 mm |
127 Gs
12.7 mT
|
0.01 kg / 0.02 LBS
9.6 g / 0.1 N
|
safe |
| 20 mm |
63 Gs
6.3 mT
|
0.00 kg / 0.01 LBS
2.4 g / 0.0 N
|
safe |
| 30 mm |
22 Gs
2.2 mT
|
0.00 kg / 0.00 LBS
0.3 g / 0.0 N
|
safe |
| 50 mm |
5 Gs
0.5 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
safe |
Table 2: Sliding capacity (vertical surface)
MW 15x2 zestaw 480 szt. / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Raw steel (µ ≈ 0.2) |
0.30 kg / 0.67 LBS
302.0 g / 3.0 N
|
| 1 mm | Raw steel (µ ≈ 0.2) |
0.26 kg / 0.57 LBS
260.0 g / 2.6 N
|
| 2 mm | Raw steel (µ ≈ 0.2) |
0.21 kg / 0.45 LBS
206.0 g / 2.0 N
|
| 3 mm | Raw steel (µ ≈ 0.2) |
0.15 kg / 0.34 LBS
154.0 g / 1.5 N
|
| 5 mm | Raw steel (µ ≈ 0.2) |
0.07 kg / 0.16 LBS
74.0 g / 0.7 N
|
| 10 mm | Raw steel (µ ≈ 0.2) |
0.01 kg / 0.02 LBS
10.0 g / 0.1 N
|
| 15 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 LBS
2.0 g / 0.0 N
|
| 20 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 30 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 50 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 15x2 zestaw 480 szt. / N38
| Surface type | Friction coefficient / % | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% of nominal force
|
0.45 kg / 1.00 LBS
453.0 g / 4.4 N
|
| Painted steel (standard) |
µ = 0.2
20% of nominal force
|
0.30 kg / 0.67 LBS
302.0 g / 3.0 N
|
| Oily/slippery steel |
µ = 0.1
10% of nominal force
|
0.15 kg / 0.33 LBS
151.0 g / 1.5 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% of nominal force
|
0.76 kg / 1.66 LBS
755.0 g / 7.4 N
|
Table 4: Material efficiency (saturation) - power losses
MW 15x2 zestaw 480 szt. / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.15 kg / 0.33 LBS
151.0 g / 1.5 N
|
| 1 mm |
|
0.38 kg / 0.83 LBS
377.5 g / 3.7 N
|
| 2 mm |
|
0.76 kg / 1.66 LBS
755.0 g / 7.4 N
|
| 3 mm |
|
1.13 kg / 2.50 LBS
1132.5 g / 11.1 N
|
| 5 mm |
|
1.51 kg / 3.33 LBS
1510.0 g / 14.8 N
|
| 10 mm |
|
1.51 kg / 3.33 LBS
1510.0 g / 14.8 N
|
| 11 mm |
|
1.51 kg / 3.33 LBS
1510.0 g / 14.8 N
|
| 12 mm |
|
1.51 kg / 3.33 LBS
1510.0 g / 14.8 N
|
Table 5: Thermal stability (material behavior) - thermal limit
MW 15x2 zestaw 480 szt. / N38
| Magnet temperature (°C) | Force change relative to 20°C | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.51 kg / 3.33 LBS
1510.0 g / 14.8 N
|
Estimate |
| 40 °C | -4.4% |
1.44 kg / 3.18 LBS
1444.3 g / 14.2 N
|
Estimate |
| 60 °C | -8.6% |
1.38 kg / 3.04 LBS
1380.0 g / 13.5 N
|
Estimate |
| 80 °C | -12.8% |
1.32 kg / 2.90 LBS
1317.3 g / 12.9 N
|
Material limit |
| 100 °C | — | — | Out of range — no model |
Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 15x2 zestaw 480 szt. / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
2.78 kg / 6.12 LBS
2 915 Gs
|
0.42 kg / 0.92 LBS
417 g / 4.1 N
|
N/A |
| 1 mm |
2.61 kg / 5.76 LBS
3 096 Gs
|
0.39 kg / 0.86 LBS
392 g / 3.8 N
|
2.35 kg / 5.18 LBS
~0 Gs
|
| 2 mm |
2.40 kg / 5.28 LBS
2 966 Gs
|
0.36 kg / 0.79 LBS
360 g / 3.5 N
|
2.16 kg / 4.76 LBS
~0 Gs
|
| 3 mm |
2.15 kg / 4.75 LBS
2 812 Gs
|
0.32 kg / 0.71 LBS
323 g / 3.2 N
|
1.94 kg / 4.27 LBS
~0 Gs
|
| 5 mm |
1.65 kg / 3.63 LBS
2 459 Gs
|
0.25 kg / 0.54 LBS
247 g / 2.4 N
|
1.48 kg / 3.27 LBS
~0 Gs
|
| 10 mm |
0.68 kg / 1.50 LBS
1 582 Gs
|
0.10 kg / 0.23 LBS
102 g / 1.0 N
|
0.61 kg / 1.35 LBS
~0 Gs
|
| 20 mm |
0.10 kg / 0.21 LBS
595 Gs
|
0.01 kg / 0.03 LBS
14 g / 0.1 N
|
0.09 kg / 0.19 LBS
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 LBS
71 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
43 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
28 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
19 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
14 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
10 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Axial field levels — not safety zones
MW 15x2 zestaw 480 szt. / N38
| Field level (Gs) | mT | Model distance (cm) |
|---|---|---|
| < 5 Gs | < 0.5 mT | 5.5 cm |
| < 10 Gs | < 1.0 mT | 4.0 cm |
| < 20 Gs | < 2.0 mT | 3.5 cm |
| < 40 Gs | < 4.0 mT | 2.5 cm |
| < 50 Gs | < 5.0 mT | 2.5 cm |
| < 400 Gs | < 40.0 mT | 1.0 cm |
| < 600 Gs | < 60.0 mT | 1.0 cm |
Table 8: Impact energy (kinetic energy) - warning
MW 15x2 zestaw 480 szt. / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
1.04 km/h
(0.29 m/s)
|
0.05 J | |
| 30 mm |
1.05 km/h
(0.29 m/s)
|
0.05 J | |
| 50 mm |
1.05 km/h
(0.29 m/s)
|
0.05 J | |
| 100 mm |
1.05 km/h
(0.29 m/s)
|
0.05 J |
Table 9: Anti-corrosion coating durability
MW 15x2 zestaw 480 szt. / 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 (Pc)
MW 15x2 zestaw 480 szt. / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 3 541 Mx | 35.4 µWb |
| Pc Coefficient | 0.20 | Low (Flat) |
Table 11: Physics of underwater searching
MW 15x2 zestaw 480 szt. / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 1.51 kg | Standard |
| Water (riverbed) |
1.73 kg
(+0.22 kg buoyancy gain)
|
+14.5% |
1. Shear force
*Warning: On a vertical wall, the magnet holds only ~20% of its nominal pull.
2. Efficiency vs thickness
*Thin steel (e.g. 0.5mm PC case) severely limits the holding force.
3. Heat tolerance
N38: the maximum material working temperature is 80°C. Permitted conditions also depend on the shape and magnetic circuit.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.20
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 |
Other offers
Advantages and disadvantages of rare earth magnets.
Strengths
- They virtually do not lose power, because even after 10 years the performance loss is only ~1% (based on calculations),
- They maintain their magnetic properties even under strong external field,
- The use of an metallic coating of noble metals (nickel, gold, silver) causes the element to present itself better,
- They are known for high magnetic induction at the operating surface, which affects their effectiveness,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures reaching 230°C and above...
- Possibility of exact modeling as well as optimizing to concrete applications,
- Universal use in electronics industry – they are used in magnetic memories, motor assemblies, precision medical tools, and modern systems.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which enables their usage in miniature devices
Cons
- At strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
- They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Due to limitations in producing nuts and complex forms in magnets, we propose using casing - magnetic mount.
- Health risk resulting from small fragments of magnets can be dangerous, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, small elements of these products are able to disrupt the diagnostic process medical after entering the body.
- Due to neodymium price, their price exceeds standard values,
Lifting parameters
Maximum lifting force for a neodymium magnet – what contributes to it?
- with the contact of a sheet made of special test steel, ensuring full magnetic saturation
- with a thickness of at least 10 mm
- with an ground contact surface
- with total lack of distance (no impurities)
- under axial force vector (90-degree angle)
- at room temperature
Practical lifting capacity: influencing factors
- Gap (between the magnet and the metal), as even a microscopic distance (e.g. 0.5 mm) leads to a reduction in force by up to 50% (this also applies to varnish, rust or debris).
- Angle of force application – highest force is available only during pulling at a 90° angle. The shear force of the magnet along the surface is usually many times lower (approx. 1/5 of the lifting capacity).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Plate material – low-carbon steel gives the best results. Higher carbon content lower magnetic properties and holding force.
- Surface condition – ground elements guarantee perfect abutment, which improves force. Rough surfaces weaken the grip.
- Temperature influence – high temperature weakens pulling force. Too high temperature can permanently demagnetize the magnet.
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate decreases the load capacity.
Warnings
Operating temperature
Do not exceed the maximum operating temperature stated in the specifications of the particular product. The limit depends on the material, geometry and operating arrangement; there is no single threshold for all neodymium magnets. Overheating can permanently weaken a magnet.
Do not drill into magnets
Combustion risk: Rare earth powder is explosive. Avoid machining magnets in home conditions as this may cause fire.
Warning for heart patients
Patients with a heart stimulator have to keep an safe separation from magnets. The magnetic field can interfere with the operation of the implant.
Protective goggles
Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.
Swallowing risk
Always keep magnets away from children. Ingestion danger is significant, and the effects of magnets clamping inside the body are life-threatening.
Threat to electronics
Avoid bringing magnets near a wallet, laptop, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.
Physical harm
Protect your hands. Two powerful magnets will snap together instantly with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!
Handling guide
Use magnets with awareness. Their immense force can surprise even experienced users. Plan your moves and respect their force.
Nickel coating and allergies
Studies show that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, prevent touching magnets with bare hands and choose encased magnets.
Precision electronics
Navigation devices and smartphones are highly sensitive to magnetism. Close proximity with a strong magnet can permanently damage the sensors in your phone.
