MW 5x2 zestaw 50 szt. / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010530
GTIN/EAN: 5906301815211
- Diameter Ø
- 5 mm [±0,1 mm]
- Height
- 2 mm [±0,1 mm]
- Weight
- 14.5 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
10.97 zł net / pcs
13.49 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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Product card - MW 5x2 zestaw 50 szt. / N38 - cylindrical magnet
Specification / characteristics - MW 5x2 zestaw 50 szt. / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010530 |
| GTIN/EAN | 5906301815211 |
| Distributor | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 5 mm [±0,1 mm] |
| Height | 2 mm [±0,1 mm] |
| Weight | 14.5 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.70 kg / 6.86 N |
| Magnetic Induction ~ ? | 386.50 mT / 3865 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 |
Physical simulation of the product - technical parameters
Presented data are the direct effect of a physical analysis. Results were calculated on algorithms for the class Nd2Fe14B. Actual parameters may differ. Use these calculations as a supplementary guide during assembly planning.
Table 1: Static pull force (pull vs distance) - power drop
MW 5x2 zestaw 50 szt. / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
3860 Gs
386.0 mT
|
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
|
low risk |
| 1 mm |
2460 Gs
246.0 mT
|
0.28 kg / 0.63 LBS
284.4 g / 2.8 N
|
low risk |
| 2 mm |
1384 Gs
138.4 mT
|
0.09 kg / 0.20 LBS
90.0 g / 0.9 N
|
low risk |
| 3 mm |
782 Gs
78.2 mT
|
0.03 kg / 0.06 LBS
28.8 g / 0.3 N
|
low risk |
| 5 mm |
293 Gs
29.3 mT
|
0.00 kg / 0.01 LBS
4.0 g / 0.0 N
|
low risk |
| 10 mm |
55 Gs
5.5 mT
|
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
|
low risk |
| 15 mm |
18 Gs
1.8 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
low risk |
| 20 mm |
8 Gs
0.8 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
low risk |
| 30 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
low risk |
| 50 mm |
1 Gs
0.1 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
low risk |
Table 2: Shear hold (wall)
MW 5x2 zestaw 50 szt. / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Raw steel (µ ≈ 0.2) |
0.14 kg / 0.31 LBS
140.0 g / 1.4 N
|
| 1 mm | Raw steel (µ ≈ 0.2) |
0.06 kg / 0.12 LBS
56.0 g / 0.5 N
|
| 2 mm | Raw steel (µ ≈ 0.2) |
0.02 kg / 0.04 LBS
18.0 g / 0.2 N
|
| 3 mm | Raw steel (µ ≈ 0.2) |
0.01 kg / 0.01 LBS
6.0 g / 0.1 N
|
| 5 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 10 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 15 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 LBS
0.0 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: Wall mounting (sliding) - vertical pull
MW 5x2 zestaw 50 szt. / N38
| Surface type | Friction coefficient / % | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% of nominal force
|
0.21 kg / 0.46 LBS
210.0 g / 2.1 N
|
| Painted steel (standard) |
µ = 0.2
20% of nominal force
|
0.14 kg / 0.31 LBS
140.0 g / 1.4 N
|
| Oily/slippery steel |
µ = 0.1
10% of nominal force
|
0.07 kg / 0.15 LBS
70.0 g / 0.7 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% of nominal force
|
0.35 kg / 0.77 LBS
350.0 g / 3.4 N
|
Table 4: Material efficiency (substrate influence) - power losses
MW 5x2 zestaw 50 szt. / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.07 kg / 0.15 LBS
70.0 g / 0.7 N
|
| 1 mm |
|
0.18 kg / 0.39 LBS
175.0 g / 1.7 N
|
| 2 mm |
|
0.35 kg / 0.77 LBS
350.0 g / 3.4 N
|
| 3 mm |
|
0.52 kg / 1.16 LBS
525.0 g / 5.2 N
|
| 5 mm |
|
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
|
| 10 mm |
|
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
|
| 11 mm |
|
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
|
| 12 mm |
|
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
|
Table 5: Working in heat (material behavior) - resistance threshold
MW 5x2 zestaw 50 szt. / N38
| Magnet temperature (°C) | Force change relative to 20°C | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
|
Estimate |
| 40 °C | -4.4% |
0.67 kg / 1.48 LBS
669.5 g / 6.6 N
|
Estimate |
| 60 °C | -8.6% |
0.64 kg / 1.41 LBS
639.8 g / 6.3 N
|
Estimate |
| 80 °C | -12.8% |
0.61 kg / 1.35 LBS
610.6 g / 6.0 N
|
Material limit |
| 100 °C | — | — | Out of range — no model |
Table 6: Magnet-Magnet interaction (attraction) - field range
MW 5x2 zestaw 50 szt. / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
1.80 kg / 3.98 LBS
5 236 Gs
|
0.27 kg / 0.60 LBS
271 g / 2.7 N
|
N/A |
| 1 mm |
1.21 kg / 2.68 LBS
6 336 Gs
|
0.18 kg / 0.40 LBS
182 g / 1.8 N
|
1.09 kg / 2.41 LBS
~0 Gs
|
| 2 mm |
0.73 kg / 1.62 LBS
4 921 Gs
|
0.11 kg / 0.24 LBS
110 g / 1.1 N
|
0.66 kg / 1.45 LBS
~0 Gs
|
| 3 mm |
0.42 kg / 0.92 LBS
3 711 Gs
|
0.06 kg / 0.14 LBS
62 g / 0.6 N
|
0.37 kg / 0.83 LBS
~0 Gs
|
| 5 mm |
0.13 kg / 0.29 LBS
2 071 Gs
|
0.02 kg / 0.04 LBS
19 g / 0.2 N
|
0.12 kg / 0.26 LBS
~0 Gs
|
| 10 mm |
0.01 kg / 0.02 LBS
587 Gs
|
0.00 kg / 0.00 LBS
2 g / 0.0 N
|
0.01 kg / 0.02 LBS
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 LBS
110 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 50 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
|
| 60 mm |
0.00 kg / 0.00 LBS
5 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
3 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
2 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
2 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
1 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 5x2 zestaw 50 szt. / N38
| Field level (Gs) | mT | Model distance (cm) |
|---|---|---|
| < 5 Gs | < 0.5 mT | 2.5 cm |
| < 10 Gs | < 1.0 mT | 2.0 cm |
| < 20 Gs | < 2.0 mT | 1.5 cm |
| < 40 Gs | < 4.0 mT | 1.5 cm |
| < 50 Gs | < 5.0 mT | 1.5 cm |
| < 400 Gs | < 40.0 mT | 0.5 cm |
| < 600 Gs | < 60.0 mT | 0.5 cm |
Table 8: Collisions (kinetic energy) - collision effects
MW 5x2 zestaw 50 szt. / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
3.58 km/h
(1.00 m/s)
|
0.01 J | |
| 30 mm |
3.59 km/h
(1.00 m/s)
|
0.01 J | |
| 50 mm |
3.59 km/h
(1.00 m/s)
|
0.01 J | |
| 100 mm |
3.59 km/h
(1.00 m/s)
|
0.01 J |
Table 9: Corrosion resistance
MW 5x2 zestaw 50 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: Electrical data (Pc)
MW 5x2 zestaw 50 szt. / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 785 Mx | 7.9 µWb |
| Pc Coefficient | 0.50 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MW 5x2 zestaw 50 szt. / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.70 kg | Standard |
| Water (riverbed) |
0.80 kg
(+0.10 kg buoyancy gain)
|
+14.5% |
1. Shear force
*Warning: On a vertical wall, the magnet retains merely approx. 20-30% of its max power.
2. Plate thickness effect
*Thin steel (e.g. 0.5mm PC case) severely weakens the holding force.
3. Thermal stability
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) = 0.50
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% |
Ecology and recycling (GPSR)
| 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.
Strengths
- They have unchanged lifting capacity, and over around ten years their attraction force decreases symbolically – ~1% (in testing),
- They possess excellent resistance to magnetism drop when exposed to external fields,
- A magnet with a shiny silver surface is more attractive,
- Magnetic induction on the working layer of the magnet is extremely intense,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Thanks to freedom in designing and the capacity to modify to unusual requirements,
- Significant place in advanced technology sectors – they serve a role in magnetic memories, drive modules, advanced medical instruments, and complex engineering applications.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Disadvantages
- At strong impacts they can crack, therefore we recommend placing them in steel cases. 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.
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- We suggest cover - magnetic mount, due to difficulties in creating threads inside the magnet and complicated shapes.
- Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child safety. Additionally, small components of these magnets are able to be problematic in diagnostics medical after entering the body.
- High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities
Lifting parameters
Optimal lifting capacity of a neodymium magnet – what affects it?
- with the contact of a sheet made of special test steel, guaranteeing full magnetic saturation
- with a thickness no less than 10 mm
- characterized by lack of roughness
- with zero gap (no coatings)
- during pulling in a direction perpendicular to the mounting surface
- at standard ambient temperature
What influences lifting capacity in practice
- Clearance – the presence of foreign body (rust, tape, air) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
- Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
- Metal type – not every steel reacts the same. High carbon content weaken the interaction with the magnet.
- Smoothness – ideal contact is obtained only on smooth steel. Any scratches and bumps create air cushions, reducing force.
- Temperature influence – hot environment reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, however under parallel forces the holding force is lower. In addition, even a slight gap between the magnet and the plate decreases the load capacity.
Safety rules for work with NdFeB magnets
Conscious usage
Handle with care. Rare earth magnets act from a long distance and connect with huge force, often quicker than you can move away.
Heat warning
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.
Electronic devices
Powerful magnetic fields can erase data on credit cards, hard drives, and storage devices. Maintain a gap of min. 10 cm.
Keep away from children
Always keep magnets out of reach of children. Choking hazard is high, and the effects of magnets clamping inside the body are life-threatening.
Keep away from electronics
Note: neodymium magnets produce a field that interferes with precision electronics. Keep a safe distance from your mobile, device, and GPS.
Danger to pacemakers
Warning for patients: Powerful magnets affect electronics. Keep at least 30 cm distance or ask another person to work with the magnets.
Machining danger
Drilling and cutting of NdFeB material poses a fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Fragile material
Despite metallic appearance, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
Sensitization to coating
It is widely known that nickel (standard magnet coating) is a common allergen. If your skin reacts to metals, refrain from touching magnets with bare hands or choose versions in plastic housing.
Crushing force
Large magnets can crush fingers in a fraction of a second. Never put your hand betwixt two strong magnets.
