MW 22x10 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010046
GTIN/EAN: 5906301810452
Diameter Ø
22 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
28.51 g
Magnetization Direction
↑ axial
Load capacity
14.75 kg / 144.65 N
Magnetic Induction
416.85 mT / 4168 Gs
Coating
[NiCuNi] Nickel
11.30 ZŁ with VAT / pcs + price for transport
9.19 ZŁ net + 23% VAT / pcs
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Technical of the product - MW 22x10 / N38 - cylindrical magnet
Specification / characteristics - MW 22x10 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010046 |
| GTIN/EAN | 5906301810452 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 22 mm [±0,1 mm] |
| Height | 10 mm [±0,1 mm] |
| Weight | 28.51 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 14.75 kg / 144.65 N |
| Magnetic Induction ~ ? | 416.85 mT / 4168 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 analysis of the magnet - data
The following values are the direct effect of a engineering simulation. Values are based on models for the class Nd2Fe14B. Actual performance might slightly differ from theoretical values. Use these data as a reference point for designers.
Table 1: Static pull force (pull vs gap) - interaction chart
MW 22x10 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
4167 Gs
416.7 mT
|
14.75 kg / 32.52 lbs
14750.0 g / 144.7 N
|
dangerous! |
| 1 mm |
3823 Gs
382.3 mT
|
12.41 kg / 27.36 lbs
12412.2 g / 121.8 N
|
dangerous! |
| 2 mm |
3461 Gs
346.1 mT
|
10.18 kg / 22.43 lbs
10175.8 g / 99.8 N
|
dangerous! |
| 3 mm |
3102 Gs
310.2 mT
|
8.17 kg / 18.01 lbs
8171.3 g / 80.2 N
|
medium risk |
| 5 mm |
2434 Gs
243.4 mT
|
5.03 kg / 11.09 lbs
5032.6 g / 49.4 N
|
medium risk |
| 10 mm |
1262 Gs
126.2 mT
|
1.35 kg / 2.98 lbs
1352.7 g / 13.3 N
|
low risk |
| 15 mm |
675 Gs
67.5 mT
|
0.39 kg / 0.85 lbs
387.3 g / 3.8 N
|
low risk |
| 20 mm |
388 Gs
38.8 mT
|
0.13 kg / 0.28 lbs
128.2 g / 1.3 N
|
low risk |
| 30 mm |
157 Gs
15.7 mT
|
0.02 kg / 0.05 lbs
20.9 g / 0.2 N
|
low risk |
| 50 mm |
43 Gs
4.3 mT
|
0.00 kg / 0.00 lbs
1.6 g / 0.0 N
|
low risk |
Table 2: Sliding hold (vertical surface)
MW 22x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
2.95 kg / 6.50 lbs
2950.0 g / 28.9 N
|
| 1 mm | Stal (~0.2) |
2.48 kg / 5.47 lbs
2482.0 g / 24.3 N
|
| 2 mm | Stal (~0.2) |
2.04 kg / 4.49 lbs
2036.0 g / 20.0 N
|
| 3 mm | Stal (~0.2) |
1.63 kg / 3.60 lbs
1634.0 g / 16.0 N
|
| 5 mm | Stal (~0.2) |
1.01 kg / 2.22 lbs
1006.0 g / 9.9 N
|
| 10 mm | Stal (~0.2) |
0.27 kg / 0.60 lbs
270.0 g / 2.6 N
|
| 15 mm | Stal (~0.2) |
0.08 kg / 0.17 lbs
78.0 g / 0.8 N
|
| 20 mm | Stal (~0.2) |
0.03 kg / 0.06 lbs
26.0 g / 0.3 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.01 lbs
4.0 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 (sliding) - vertical pull
MW 22x10 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
4.43 kg / 9.76 lbs
4425.0 g / 43.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
2.95 kg / 6.50 lbs
2950.0 g / 28.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
1.48 kg / 3.25 lbs
1475.0 g / 14.5 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
7.38 kg / 16.26 lbs
7375.0 g / 72.3 N
|
Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 22x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.74 kg / 1.63 lbs
737.5 g / 7.2 N
|
| 1 mm |
|
1.84 kg / 4.06 lbs
1843.8 g / 18.1 N
|
| 2 mm |
|
3.69 kg / 8.13 lbs
3687.5 g / 36.2 N
|
| 3 mm |
|
5.53 kg / 12.19 lbs
5531.3 g / 54.3 N
|
| 5 mm |
|
9.22 kg / 20.32 lbs
9218.8 g / 90.4 N
|
| 10 mm |
|
14.75 kg / 32.52 lbs
14750.0 g / 144.7 N
|
| 11 mm |
|
14.75 kg / 32.52 lbs
14750.0 g / 144.7 N
|
| 12 mm |
|
14.75 kg / 32.52 lbs
14750.0 g / 144.7 N
|
Table 5: Working in heat (stability) - power drop
MW 22x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
14.75 kg / 32.52 lbs
14750.0 g / 144.7 N
|
OK |
| 40 °C | -2.2% |
14.43 kg / 31.80 lbs
14425.5 g / 141.5 N
|
OK |
| 60 °C | -4.4% |
14.10 kg / 31.09 lbs
14101.0 g / 138.3 N
|
|
| 80 °C | -6.6% |
13.78 kg / 30.37 lbs
13776.5 g / 135.1 N
|
|
| 100 °C | -28.8% |
10.50 kg / 23.15 lbs
10502.0 g / 103.0 N
|
Table 6: Two magnets (attraction) - forces in the system
MW 22x10 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
40.70 kg / 89.72 lbs
5 428 Gs
|
6.10 kg / 13.46 lbs
6105 g / 59.9 N
|
N/A |
| 1 mm |
37.49 kg / 82.64 lbs
7 999 Gs
|
5.62 kg / 12.40 lbs
5623 g / 55.2 N
|
33.74 kg / 74.38 lbs
~0 Gs
|
| 2 mm |
34.25 kg / 75.50 lbs
7 645 Gs
|
5.14 kg / 11.33 lbs
5137 g / 50.4 N
|
30.82 kg / 67.95 lbs
~0 Gs
|
| 3 mm |
31.10 kg / 68.56 lbs
7 285 Gs
|
4.66 kg / 10.28 lbs
4664 g / 45.8 N
|
27.99 kg / 61.70 lbs
~0 Gs
|
| 5 mm |
25.22 kg / 55.60 lbs
6 561 Gs
|
3.78 kg / 8.34 lbs
3783 g / 37.1 N
|
22.70 kg / 50.04 lbs
~0 Gs
|
| 10 mm |
13.89 kg / 30.61 lbs
4 868 Gs
|
2.08 kg / 4.59 lbs
2083 g / 20.4 N
|
12.50 kg / 27.55 lbs
~0 Gs
|
| 20 mm |
3.73 kg / 8.23 lbs
2 524 Gs
|
0.56 kg / 1.23 lbs
560 g / 5.5 N
|
3.36 kg / 7.41 lbs
~0 Gs
|
| 50 mm |
0.13 kg / 0.30 lbs
480 Gs
|
0.02 kg / 0.04 lbs
20 g / 0.2 N
|
0.12 kg / 0.27 lbs
~0 Gs
|
| 60 mm |
0.06 kg / 0.13 lbs
314 Gs
|
0.01 kg / 0.02 lbs
9 g / 0.1 N
|
0.05 kg / 0.11 lbs
~0 Gs
|
| 70 mm |
0.03 kg / 0.06 lbs
216 Gs
|
0.00 kg / 0.01 lbs
4 g / 0.0 N
|
0.02 kg / 0.05 lbs
~0 Gs
|
| 80 mm |
0.01 kg / 0.03 lbs
154 Gs
|
0.00 kg / 0.00 lbs
2 g / 0.0 N
|
0.01 kg / 0.03 lbs
~0 Gs
|
| 90 mm |
0.01 kg / 0.02 lbs
114 Gs
|
0.00 kg / 0.00 lbs
1 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
| 100 mm |
0.00 kg / 0.01 lbs
86 Gs
|
0.00 kg / 0.00 lbs
1 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
Table 7: Hazards (implants) - precautionary measures
MW 22x10 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 11.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 9.0 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 7.0 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 5.5 cm |
| Car key | 50 Gs (5.0 mT) | 5.0 cm |
| Payment card | 400 Gs (40.0 mT) | 2.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 2.0 cm |
Table 8: Impact energy (cracking risk) - warning
MW 22x10 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
24.22 km/h
(6.73 m/s)
|
0.65 J | |
| 30 mm |
39.77 km/h
(11.05 m/s)
|
1.74 J | |
| 50 mm |
51.30 km/h
(14.25 m/s)
|
2.89 J | |
| 100 mm |
72.54 km/h
(20.15 m/s)
|
5.79 J |
Table 9: Coating parameters (durability)
MW 22x10 / 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 (Flux)
MW 22x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 16 172 Mx | 161.7 µWb |
| Pc Coefficient | 0.55 | Low (Flat) |
Table 11: Underwater work (magnet fishing)
MW 22x10 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 14.75 kg | Standard |
| Water (riverbed) |
16.89 kg
(+2.14 kg buoyancy gain)
|
+14.5% |
1. Sliding resistance
*Caution: On a vertical wall, the magnet retains only ~20% of its max power.
2. Steel saturation
*Thin steel (e.g. computer case) severely weakens the holding force.
3. Thermal stability
*For N38 material, the safety limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.55
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other products
Pros as well as cons of neodymium magnets.
Benefits
- They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (according to literature),
- They maintain their magnetic properties even under close interference source,
- The use of an shiny finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- They show high magnetic induction at the operating surface, which affects their effectiveness,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Possibility of precise modeling and optimizing to atypical requirements,
- Huge importance in future technologies – they are commonly used in magnetic memories, motor assemblies, diagnostic systems, and technologically advanced constructions.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Weaknesses
- At strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
- When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding 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
- Due to limitations in realizing nuts and complicated shapes in magnets, we propose using casing - magnetic holder.
- Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. Additionally, tiny parts of these magnets are able to disrupt the diagnostic process 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
Holding force characteristics
Maximum lifting force for a neodymium magnet – what it depends on?
- using a base made of low-carbon steel, functioning as a circuit closing element
- whose thickness equals approx. 10 mm
- with an polished contact surface
- without the slightest clearance between the magnet and steel
- for force acting at a right angle (in the magnet axis)
- at room temperature
Lifting capacity in practice – influencing factors
- Air gap (between the magnet and the plate), because even a very small clearance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to varnish, corrosion or debris).
- Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
- Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
- Plate material – low-carbon steel gives the best results. Higher carbon content reduce magnetic permeability and holding force.
- Smoothness – ideal contact is obtained only on polished steel. Any scratches and bumps create air cushions, reducing force.
- Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently demagnetize the magnet.
Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a small distance between the magnet and the plate lowers the load capacity.
Warnings
Do not give to children
Absolutely store magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are very dangerous.
Shattering risk
Despite metallic appearance, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.
Metal Allergy
Allergy Notice: The nickel-copper-nickel coating consists of nickel. If an allergic reaction appears, immediately stop working with magnets and wear gloves.
Physical harm
Mind your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!
Electronic devices
Do not bring magnets close to a purse, laptop, or TV. The magnetic field can destroy these devices and wipe information from cards.
Handling rules
Exercise caution. Rare earth magnets attract from a distance and connect with massive power, often quicker than you can react.
Compass and GPS
A powerful magnetic field disrupts the operation of compasses in smartphones and navigation systems. Do not bring magnets close to a device to prevent damaging the sensors.
Flammability
Fire warning: Neodymium dust is explosive. Do not process magnets in home conditions as this risks ignition.
Medical implants
People with a pacemaker must maintain an safe separation from magnets. The magnetic field can interfere with the operation of the implant.
Heat warning
Regular neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. Damage is permanent.
