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 details - 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 modeling of the product - technical parameters
Presented data represent the outcome of a physical analysis. Values were calculated on algorithms for the material Nd2Fe14B. Operational performance might slightly deviate from the simulation results. Use these data as a preliminary roadmap for designers.
Table 1: Static force (force vs gap) - power drop
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 pounds
14750.0 g / 144.7 N
|
critical level |
| 1 mm |
3823 Gs
382.3 mT
|
12.41 kg / 27.36 pounds
12412.2 g / 121.8 N
|
critical level |
| 2 mm |
3461 Gs
346.1 mT
|
10.18 kg / 22.43 pounds
10175.8 g / 99.8 N
|
critical level |
| 3 mm |
3102 Gs
310.2 mT
|
8.17 kg / 18.01 pounds
8171.3 g / 80.2 N
|
warning |
| 5 mm |
2434 Gs
243.4 mT
|
5.03 kg / 11.09 pounds
5032.6 g / 49.4 N
|
warning |
| 10 mm |
1262 Gs
126.2 mT
|
1.35 kg / 2.98 pounds
1352.7 g / 13.3 N
|
low risk |
| 15 mm |
675 Gs
67.5 mT
|
0.39 kg / 0.85 pounds
387.3 g / 3.8 N
|
low risk |
| 20 mm |
388 Gs
38.8 mT
|
0.13 kg / 0.28 pounds
128.2 g / 1.3 N
|
low risk |
| 30 mm |
157 Gs
15.7 mT
|
0.02 kg / 0.05 pounds
20.9 g / 0.2 N
|
low risk |
| 50 mm |
43 Gs
4.3 mT
|
0.00 kg / 0.00 pounds
1.6 g / 0.0 N
|
low risk |
Table 2: Sliding force (wall)
MW 22x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
2.95 kg / 6.50 pounds
2950.0 g / 28.9 N
|
| 1 mm | Stal (~0.2) |
2.48 kg / 5.47 pounds
2482.0 g / 24.3 N
|
| 2 mm | Stal (~0.2) |
2.04 kg / 4.49 pounds
2036.0 g / 20.0 N
|
| 3 mm | Stal (~0.2) |
1.63 kg / 3.60 pounds
1634.0 g / 16.0 N
|
| 5 mm | Stal (~0.2) |
1.01 kg / 2.22 pounds
1006.0 g / 9.9 N
|
| 10 mm | Stal (~0.2) |
0.27 kg / 0.60 pounds
270.0 g / 2.6 N
|
| 15 mm | Stal (~0.2) |
0.08 kg / 0.17 pounds
78.0 g / 0.8 N
|
| 20 mm | Stal (~0.2) |
0.03 kg / 0.06 pounds
26.0 g / 0.3 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.01 pounds
4.0 g / 0.0 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
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 pounds
4425.0 g / 43.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
2.95 kg / 6.50 pounds
2950.0 g / 28.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
1.48 kg / 3.25 pounds
1475.0 g / 14.5 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
7.38 kg / 16.26 pounds
7375.0 g / 72.3 N
|
Table 4: Steel thickness (saturation) - 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 pounds
737.5 g / 7.2 N
|
| 1 mm |
|
1.84 kg / 4.06 pounds
1843.8 g / 18.1 N
|
| 2 mm |
|
3.69 kg / 8.13 pounds
3687.5 g / 36.2 N
|
| 3 mm |
|
5.53 kg / 12.19 pounds
5531.3 g / 54.3 N
|
| 5 mm |
|
9.22 kg / 20.32 pounds
9218.8 g / 90.4 N
|
| 10 mm |
|
14.75 kg / 32.52 pounds
14750.0 g / 144.7 N
|
| 11 mm |
|
14.75 kg / 32.52 pounds
14750.0 g / 144.7 N
|
| 12 mm |
|
14.75 kg / 32.52 pounds
14750.0 g / 144.7 N
|
Table 5: Thermal resistance (material behavior) - thermal limit
MW 22x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
14.75 kg / 32.52 pounds
14750.0 g / 144.7 N
|
OK |
| 40 °C | -2.2% |
14.43 kg / 31.80 pounds
14425.5 g / 141.5 N
|
OK |
| 60 °C | -4.4% |
14.10 kg / 31.09 pounds
14101.0 g / 138.3 N
|
|
| 80 °C | -6.6% |
13.78 kg / 30.37 pounds
13776.5 g / 135.1 N
|
|
| 100 °C | -28.8% |
10.50 kg / 23.15 pounds
10502.0 g / 103.0 N
|
Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 22x10 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
40.70 kg / 89.72 pounds
5 428 Gs
|
6.10 kg / 13.46 pounds
6105 g / 59.9 N
|
N/A |
| 1 mm |
37.49 kg / 82.64 pounds
7 999 Gs
|
5.62 kg / 12.40 pounds
5623 g / 55.2 N
|
33.74 kg / 74.38 pounds
~0 Gs
|
| 2 mm |
34.25 kg / 75.50 pounds
7 645 Gs
|
5.14 kg / 11.33 pounds
5137 g / 50.4 N
|
30.82 kg / 67.95 pounds
~0 Gs
|
| 3 mm |
31.10 kg / 68.56 pounds
7 285 Gs
|
4.66 kg / 10.28 pounds
4664 g / 45.8 N
|
27.99 kg / 61.70 pounds
~0 Gs
|
| 5 mm |
25.22 kg / 55.60 pounds
6 561 Gs
|
3.78 kg / 8.34 pounds
3783 g / 37.1 N
|
22.70 kg / 50.04 pounds
~0 Gs
|
| 10 mm |
13.89 kg / 30.61 pounds
4 868 Gs
|
2.08 kg / 4.59 pounds
2083 g / 20.4 N
|
12.50 kg / 27.55 pounds
~0 Gs
|
| 20 mm |
3.73 kg / 8.23 pounds
2 524 Gs
|
0.56 kg / 1.23 pounds
560 g / 5.5 N
|
3.36 kg / 7.41 pounds
~0 Gs
|
| 50 mm |
0.13 kg / 0.30 pounds
480 Gs
|
0.02 kg / 0.04 pounds
20 g / 0.2 N
|
0.12 kg / 0.27 pounds
~0 Gs
|
| 60 mm |
0.06 kg / 0.13 pounds
314 Gs
|
0.01 kg / 0.02 pounds
9 g / 0.1 N
|
0.05 kg / 0.11 pounds
~0 Gs
|
| 70 mm |
0.03 kg / 0.06 pounds
216 Gs
|
0.00 kg / 0.01 pounds
4 g / 0.0 N
|
0.02 kg / 0.05 pounds
~0 Gs
|
| 80 mm |
0.01 kg / 0.03 pounds
154 Gs
|
0.00 kg / 0.00 pounds
2 g / 0.0 N
|
0.01 kg / 0.03 pounds
~0 Gs
|
| 90 mm |
0.01 kg / 0.02 pounds
114 Gs
|
0.00 kg / 0.00 pounds
1 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 100 mm |
0.00 kg / 0.01 pounds
86 Gs
|
0.00 kg / 0.00 pounds
1 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Protective zones (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 |
| Timepiece | 20 Gs (2.0 mT) | 7.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 5.5 cm |
| Remote | 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: Collisions (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 holds only approx. 20-30% of its max power.
2. Efficiency vs thickness
*Thin metal sheet (e.g. 0.5mm PC case) significantly limits the holding force.
3. Temperature resistance
*For N38 material, the critical 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
Advantages and disadvantages of Nd2Fe14B magnets.
Strengths
- They retain full power for almost 10 years – the drop is just ~1% (in theory),
- They are noted for resistance to demagnetization induced by presence of other magnetic fields,
- By using a lustrous layer of nickel, the element presents an nice look,
- The surface of neodymium magnets generates a unique magnetic field – this is one of their assets,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
- Thanks to freedom in designing and the capacity to adapt to individual projects,
- Fundamental importance in advanced technology sectors – they are used in mass storage devices, electric drive systems, medical devices, and industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which allows their use in small systems
Cons
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a strong case, which not only secures them against impacts but also increases their durability
- Neodymium magnets lose their power 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
- Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in producing nuts and complicated forms in magnets, we propose using cover - magnetic mechanism.
- Potential hazard resulting from small fragments of magnets are risky, if swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small components of these products are able to be problematic in diagnostics medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Pull force analysis
Breakaway strength of the magnet in ideal conditions – what contributes to it?
- on a base made of structural steel, optimally conducting the magnetic field
- whose transverse dimension is min. 10 mm
- characterized by smoothness
- under conditions of gap-free contact (surface-to-surface)
- during pulling in a direction vertical to the plane
- in temp. approx. 20°C
Determinants of lifting force in real conditions
- Clearance – the presence of any layer (rust, tape, gap) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
- Angle of force application – highest force is available only during perpendicular pulling. The force required to slide of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
- Base massiveness – too thin plate causes magnetic saturation, causing part of the power to be lost into the air.
- Chemical composition of the base – low-carbon steel gives the best results. Alloy steels reduce magnetic permeability and holding force.
- Smoothness – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
- Temperature influence – hot environment reduces magnetic field. Too high temperature can permanently damage the magnet.
Lifting capacity was measured using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, however under parallel forces the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.
Safety rules for work with neodymium magnets
Dust is flammable
Fire hazard: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.
Sensitization to coating
Certain individuals suffer from a sensitization to nickel, which is the common plating for neodymium magnets. Extended handling might lead to dermatitis. We suggest use safety gloves.
Permanent damage
Standard neodymium magnets (grade N) lose power when the temperature surpasses 80°C. The loss of strength is permanent.
Product not for children
Always keep magnets out of reach of children. Ingestion danger is significant, and the effects of magnets clamping inside the body are life-threatening.
Impact on smartphones
A powerful magnetic field negatively affects the functioning of compasses in smartphones and GPS navigation. Maintain magnets near a device to avoid breaking the sensors.
Pinching danger
Watch your fingers. Two powerful magnets will join instantly with a force of several hundred kilograms, destroying everything in their path. Be careful!
Powerful field
Exercise caution. Rare earth magnets act from a long distance and connect with massive power, often faster than you can react.
Electronic hazard
Very strong magnetic fields can erase data on payment cards, hard drives, and storage devices. Stay away of min. 10 cm.
Eye protection
Watch out for shards. Magnets can explode upon violent connection, launching shards into the air. Eye protection is mandatory.
Life threat
Warning for patients: Powerful magnets affect medical devices. Keep at least 30 cm distance or request help to work with the magnets.
