MW 12x1.5 zestaw 1820 szt. / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010561
GTIN/EAN: 5906301815532
- Diameter Ø
- 12 mm [±0,1 mm]
- Height
- 1.5 mm [±0,1 mm]
- Weight
- 2311.4 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
599.27 zł net / pcs
737.10 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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Technical details - MW 12x1.5 zestaw 1820 szt. / N38 - cylindrical magnet
Specification / characteristics - MW 12x1.5 zestaw 1820 szt. / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010561 |
| GTIN/EAN | 5906301815532 |
| Distributor | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 12 mm [±0,1 mm] |
| Height | 1.5 mm [±0,1 mm] |
| Weight | 2311.4 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.87 kg / 8.51 N |
| Magnetic Induction ~ ? | 150.32 mT / 1503 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 modeling of the product - technical parameters
These information constitute the direct effect of a mathematical analysis. Values rely on algorithms for the material Nd2Fe14B. Real-world conditions may deviate from the simulation results. Please consider these calculations as a reference point during assembly planning.
Table 1: Static pull force (force vs gap) - characteristics
MW 12x1.5 zestaw 1820 szt. / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
1503 Gs
150.3 mT
|
0.87 kg / 1.92 pounds
870.0 g / 8.5 N
|
low risk |
| 1 mm |
1365 Gs
136.5 mT
|
0.72 kg / 1.58 pounds
718.1 g / 7.0 N
|
low risk |
| 2 mm |
1163 Gs
116.3 mT
|
0.52 kg / 1.15 pounds
521.4 g / 5.1 N
|
low risk |
| 3 mm |
947 Gs
94.7 mT
|
0.35 kg / 0.76 pounds
345.7 g / 3.4 N
|
low risk |
| 5 mm |
587 Gs
58.7 mT
|
0.13 kg / 0.29 pounds
132.6 g / 1.3 N
|
low risk |
| 10 mm |
180 Gs
18.0 mT
|
0.01 kg / 0.03 pounds
12.5 g / 0.1 N
|
low risk |
| 15 mm |
70 Gs
7.0 mT
|
0.00 kg / 0.00 pounds
1.9 g / 0.0 N
|
low risk |
| 20 mm |
33 Gs
3.3 mT
|
0.00 kg / 0.00 pounds
0.4 g / 0.0 N
|
low risk |
| 30 mm |
11 Gs
1.1 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
| 50 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
Table 2: Slippage force (vertical surface)
MW 12x1.5 zestaw 1820 szt. / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Raw steel (µ ≈ 0.2) |
0.17 kg / 0.38 pounds
174.0 g / 1.7 N
|
| 1 mm | Raw steel (µ ≈ 0.2) |
0.14 kg / 0.32 pounds
144.0 g / 1.4 N
|
| 2 mm | Raw steel (µ ≈ 0.2) |
0.10 kg / 0.23 pounds
104.0 g / 1.0 N
|
| 3 mm | Raw steel (µ ≈ 0.2) |
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
|
| 5 mm | Raw steel (µ ≈ 0.2) |
0.03 kg / 0.06 pounds
26.0 g / 0.3 N
|
| 10 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 pounds
2.0 g / 0.0 N
|
| 15 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 20 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 30 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 50 mm | Raw steel (µ ≈ 0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 12x1.5 zestaw 1820 szt. / N38
| Surface type | Friction coefficient / % | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% of nominal force
|
0.26 kg / 0.58 pounds
261.0 g / 2.6 N
|
| Painted steel (standard) |
µ = 0.2
20% of nominal force
|
0.17 kg / 0.38 pounds
174.0 g / 1.7 N
|
| Oily/slippery steel |
µ = 0.1
10% of nominal force
|
0.09 kg / 0.19 pounds
87.0 g / 0.9 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% of nominal force
|
0.44 kg / 0.96 pounds
435.0 g / 4.3 N
|
Table 4: Steel thickness (substrate influence) - power losses
MW 12x1.5 zestaw 1820 szt. / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.09 kg / 0.19 pounds
87.0 g / 0.9 N
|
| 1 mm |
|
0.22 kg / 0.48 pounds
217.5 g / 2.1 N
|
| 2 mm |
|
0.44 kg / 0.96 pounds
435.0 g / 4.3 N
|
| 3 mm |
|
0.65 kg / 1.44 pounds
652.5 g / 6.4 N
|
| 5 mm |
|
0.87 kg / 1.92 pounds
870.0 g / 8.5 N
|
| 10 mm |
|
0.87 kg / 1.92 pounds
870.0 g / 8.5 N
|
| 11 mm |
|
0.87 kg / 1.92 pounds
870.0 g / 8.5 N
|
| 12 mm |
|
0.87 kg / 1.92 pounds
870.0 g / 8.5 N
|
Table 5: Thermal stability (material behavior) - power drop
MW 12x1.5 zestaw 1820 szt. / N38
| Magnet temperature (°C) | Force change relative to 20°C | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.87 kg / 1.92 pounds
870.0 g / 8.5 N
|
Estimate |
| 40 °C | -4.4% |
0.83 kg / 1.83 pounds
832.1 g / 8.2 N
|
Estimate |
| 60 °C | -8.6% |
0.80 kg / 1.75 pounds
795.1 g / 7.8 N
|
Estimate |
| 80 °C | -12.8% |
0.76 kg / 1.67 pounds
758.9 g / 7.4 N
|
Material limit |
| 100 °C | — | — | Out of range — no model |
Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 12x1.5 zestaw 1820 szt. / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
1.57 kg / 3.47 pounds
2 770 Gs
|
0.24 kg / 0.52 pounds
236 g / 2.3 N
|
N/A |
| 1 mm |
1.46 kg / 3.21 pounds
2 891 Gs
|
0.22 kg / 0.48 pounds
219 g / 2.1 N
|
1.31 kg / 2.89 pounds
~0 Gs
|
| 2 mm |
1.30 kg / 2.87 pounds
2 731 Gs
|
0.19 kg / 0.43 pounds
195 g / 1.9 N
|
1.17 kg / 2.58 pounds
~0 Gs
|
| 3 mm |
1.12 kg / 2.48 pounds
2 538 Gs
|
0.17 kg / 0.37 pounds
168 g / 1.7 N
|
1.01 kg / 2.23 pounds
~0 Gs
|
| 5 mm |
0.78 kg / 1.71 pounds
2 109 Gs
|
0.12 kg / 0.26 pounds
116 g / 1.1 N
|
0.70 kg / 1.54 pounds
~0 Gs
|
| 10 mm |
0.24 kg / 0.53 pounds
1 173 Gs
|
0.04 kg / 0.08 pounds
36 g / 0.4 N
|
0.22 kg / 0.48 pounds
~0 Gs
|
| 20 mm |
0.02 kg / 0.05 pounds
361 Gs
|
0.00 kg / 0.01 pounds
3 g / 0.0 N
|
0.02 kg / 0.05 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
36 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
22 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
14 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
10 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
7 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
5 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Axial field levels — not safety zones
MW 12x1.5 zestaw 1820 szt. / N38
| Field level (Gs) | mT | Model distance (cm) |
|---|---|---|
| < 5 Gs | < 0.5 mT | 4.0 cm |
| < 10 Gs | < 1.0 mT | 3.5 cm |
| < 20 Gs | < 2.0 mT | 2.5 cm |
| < 40 Gs | < 4.0 mT | 2.0 cm |
| < 50 Gs | < 5.0 mT | 2.0 cm |
| < 400 Gs | < 40.0 mT | 1.0 cm |
| < 600 Gs | < 60.0 mT | 0.5 cm |
Table 8: Collisions (kinetic energy) - warning
MW 12x1.5 zestaw 1820 szt. / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
0.53 km/h
(0.15 m/s)
|
0.02 J | |
| 30 mm |
0.53 km/h
(0.15 m/s)
|
0.03 J | |
| 50 mm |
0.53 km/h
(0.15 m/s)
|
0.03 J | |
| 100 mm |
0.53 km/h
(0.15 m/s)
|
0.03 J |
Table 9: Corrosion resistance
MW 12x1.5 zestaw 1820 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 12x1.5 zestaw 1820 szt. / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 2 159 Mx | 21.6 µWb |
| Pc Coefficient | 0.19 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MW 12x1.5 zestaw 1820 szt. / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.87 kg | Standard |
| Water (riverbed) |
1.00 kg
(+0.13 kg buoyancy gain)
|
+14.5% |
1. Sliding resistance
*Warning: On a vertical surface, the magnet holds merely approx. 20-30% of its perpendicular strength.
2. Efficiency vs thickness
*Thin steel (e.g. 0.5mm PC case) severely limits the holding force.
3. Temperature resistance
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) = 0.19
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.
Elemental analysis
| 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 |
Other deals
Advantages and disadvantages of rare earth magnets.
Strengths
- Their magnetic field remains stable, and after around 10 years it decreases only by ~1% (according to research),
- They maintain their magnetic properties even under strong external field,
- In other words, due to the glossy finish of silver, the element becomes visually attractive,
- They feature high magnetic induction at the operating surface, which affects their effectiveness,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures approaching 230°C and above...
- Due to the potential of flexible shaping and adaptation to unique requirements, magnetic components can be created in a variety of geometric configurations, which increases their versatility,
- Huge importance in future technologies – they find application in computer drives, electric drive systems, medical equipment, and technologically advanced constructions.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Limitations
- To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
- Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
- They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Limited possibility of making threads in the magnet and complex shapes - recommended is casing - magnetic holder.
- Health risk related to microscopic parts of magnets pose a threat, if swallowed, which gains importance in the context of child safety. It is also worth noting that small elements of these magnets can be problematic in diagnostics medical when they are in the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Pull force analysis
Detachment force of the magnet in optimal conditions – what affects it?
- with the contact of a sheet made of low-carbon steel, ensuring maximum field concentration
- with a cross-section minimum 10 mm
- with an ground contact surface
- with zero gap (no impurities)
- under perpendicular force vector (90-degree angle)
- at ambient temperature approx. 20 degrees Celsius
Impact of factors on magnetic holding capacity in practice
- Distance (between the magnet and the plate), as even a very small clearance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to varnish, rust or dirt).
- Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
- Base massiveness – insufficiently thick steel does not close the flux, causing part of the flux to be wasted to the other side.
- Material composition – not every steel reacts the same. High carbon content weaken the attraction effect.
- Surface quality – the more even the surface, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
- Temperature influence – hot environment weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity was determined using a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the holding force is lower. Additionally, even a small distance between the magnet and the plate reduces the holding force.
Safety rules for work with neodymium magnets
Do not overheat magnets
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.
Magnetic media
Do not bring magnets near a wallet, laptop, or screen. The magnetism can destroy these devices and wipe information from cards.
Mechanical processing
Machining of neodymium magnets poses a fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.
Conscious usage
Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.
Physical harm
Mind your fingers. Two large magnets will join immediately with a force of massive weight, destroying everything in their path. Be careful!
Pacemakers
Patients with a pacemaker must maintain an absolute distance from magnets. The magnetism can interfere with the functioning of the implant.
Fragile material
Despite metallic appearance, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
Phone sensors
An intense magnetic field negatively affects the functioning of magnetometers in smartphones and navigation systems. Maintain magnets close to a device to avoid breaking the sensors.
Swallowing risk
These products are not suitable for play. Swallowing a few magnets can lead to them connecting inside the digestive tract, which poses a severe health hazard and requires urgent medical intervention.
Sensitization to coating
Medical facts indicate that the nickel plating (the usual finish) is a common allergen. If you have an allergy, avoid direct skin contact or opt for coated magnets.
