MW 5x30 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010088
GTIN: 5906301810872
Diameter Ø
5 mm [±0,1 mm]
Height
30 mm [±0,1 mm]
Weight
4.42 g
Magnetization Direction
↑ axial
Load capacity
0.45 kg / 4.40 N
Magnetic Induction
616.32 mT / 6163 Gs
Coating
[NiCuNi] Nickel
3.57 ZŁ with VAT / pcs + price for transport
2.90 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?Do you have questions?
Call us
+48 22 499 98 98
if you prefer get in touch via
our online form
through our site.
Force along with appearance of a magnet can be analyzed with our
magnetic calculator.
Same-day processing for orders placed before 14:00.
MW 5x30 / N38 - cylindrical magnet
Specification / characteristics MW 5x30 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010088 |
| GTIN | 5906301810872 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 5 mm [±0,1 mm] |
| Height | 30 mm [±0,1 mm] |
| Weight | 4.42 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.45 kg / 4.40 N |
| Magnetic Induction ~ ? | 616.32 mT / 6163 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 | T |
| 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 106 | °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
The following data constitute the result of a engineering calculation. Results are based on algorithms for the class NdFeB. Operational performance might slightly deviate from the simulation results. Use these calculations as a reference point when designing systems.
MW 5x30 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg) | Risk Status |
|---|---|---|---|
| 0 mm |
6154 Gs
615.4 mT
|
0.45 kg / 450.0 g
4.4 N
|
low risk |
| 1 mm |
3877 Gs
387.7 mT
|
0.18 kg / 178.6 g
1.8 N
|
low risk |
| 2 mm |
2308 Gs
230.8 mT
|
0.06 kg / 63.3 g
0.6 N
|
low risk |
| 3 mm |
1419 Gs
141.9 mT
|
0.02 kg / 23.9 g
0.2 N
|
low risk |
| 5 mm |
639 Gs
63.9 mT
|
0.00 kg / 4.8 g
0.0 N
|
low risk |
| 10 mm |
173 Gs
17.3 mT
|
0.00 kg / 0.4 g
0.0 N
|
low risk |
| 15 mm |
75 Gs
7.5 mT
|
0.00 kg / 0.1 g
0.0 N
|
low risk |
| 20 mm |
40 Gs
4.0 mT
|
0.00 kg / 0.0 g
0.0 N
|
low risk |
| 30 mm |
16 Gs
1.6 mT
|
0.00 kg / 0.0 g
0.0 N
|
low risk |
| 50 mm |
5 Gs
0.5 mT
|
0.00 kg / 0.0 g
0.0 N
|
low risk |
MW 5x30 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.09 kg / 90.0 g
0.9 N
|
| 1 mm | Stal (~0.2) |
0.04 kg / 36.0 g
0.4 N
|
| 2 mm | Stal (~0.2) |
0.01 kg / 12.0 g
0.1 N
|
| 3 mm | Stal (~0.2) |
0.00 kg / 4.0 g
0.0 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
MW 5x30 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.14 kg / 135.0 g
1.3 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.09 kg / 90.0 g
0.9 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.05 kg / 45.0 g
0.4 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.23 kg / 225.0 g
2.2 N
|
MW 5x30 / N38
| Steel thickness (mm) | % power | Real pull force (kg) |
|---|---|---|
| 0.5 mm |
|
0.05 kg / 45.0 g
0.4 N
|
| 1 mm |
|
0.11 kg / 112.5 g
1.1 N
|
| 2 mm |
|
0.23 kg / 225.0 g
2.2 N
|
| 5 mm |
|
0.45 kg / 450.0 g
4.4 N
|
| 10 mm |
|
0.45 kg / 450.0 g
4.4 N
|
MW 5x30 / N38
| Ambient temp. (°C) | Power loss | Remaining pull | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.45 kg / 450.0 g
4.4 N
|
OK |
| 40 °C | -2.2% |
0.44 kg / 440.1 g
4.3 N
|
OK |
| 60 °C | -4.4% |
0.43 kg / 430.2 g
4.2 N
|
OK |
| 80 °C | -6.6% |
0.42 kg / 420.3 g
4.1 N
|
|
| 100 °C | -28.8% |
0.32 kg / 320.4 g
3.1 N
|
MW 5x30 / N38
| Gap (mm) | Attraction (kg) (N-S) | Repulsion (kg) (N-N) |
|---|---|---|
| 0 mm |
4.58 kg / 4584 g
45.0 N
6 170 Gs
|
N/A |
| 1 mm |
2.98 kg / 2982 g
29.3 N
9 927 Gs
|
2.68 kg / 2684 g
26.3 N
~0 Gs
|
| 2 mm |
1.82 kg / 1820 g
17.9 N
7 755 Gs
|
1.64 kg / 1638 g
16.1 N
~0 Gs
|
| 3 mm |
1.08 kg / 1083 g
10.6 N
5 981 Gs
|
0.97 kg / 974 g
9.6 N
~0 Gs
|
| 5 mm |
0.39 kg / 391 g
3.8 N
3 595 Gs
|
0.35 kg / 352 g
3.5 N
~0 Gs
|
| 10 mm |
0.05 kg / 49 g
0.5 N
1 278 Gs
|
0.04 kg / 44 g
0.4 N
~0 Gs
|
| 20 mm |
0.00 kg / 4 g
0.0 N
346 Gs
|
0.00 kg / 0 g
0.0 N
~0 Gs
|
| 50 mm |
0.00 kg / 0 g
0.0 N
49 Gs
|
0.00 kg / 0 g
0.0 N
~0 Gs
|
MW 5x30 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 5.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 4.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 3.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 2.5 cm |
| Car key | 50 Gs (5.0 mT) | 2.0 cm |
| Payment card | 400 Gs (40.0 mT) | 1.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.0 cm |
MW 5x30 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
10.18 km/h
(2.83 m/s)
|
0.02 J | |
| 30 mm |
17.63 km/h
(4.90 m/s)
|
0.05 J | |
| 50 mm |
22.75 km/h
(6.32 m/s)
|
0.09 J | |
| 100 mm |
32.18 km/h
(8.94 m/s)
|
0.18 J |
MW 5x30 / 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) |
MW 5x30 / N38
| Parameter | Value | Jedn. SI / Opis |
|---|---|---|
| Strumień (Flux) | 1 468 Mx | 14.7 µWb |
| Współczynnik Pc | 1.59 | Wysoki (Stabilny) |
MW 5x30 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.45 kg | Standard |
| Water (riverbed) |
0.52 kg
(+0.07 kg Buoyancy gain)
|
+14.5% |
1. Montaż na Ścianie (Ześlizg)
*Uwaga: Na pionowej ścianie magnes utrzyma tylko ok. 20-30% tego co na suficie.
2. Wpływ Grubości Blachy
*Cienka blacha (np. obudowa PC 0.5mm) drastycznie osłabia magnes.
3. Wytrzymałość Temperaturowa
*Dla materiału N38 granica bezpieczeństwa to 80°C.
Jak rozdzielać?
Nie próbuj odrywać magnesów siłą!
Zawsze zsuwaj je na bok krawędzi stołu.
Elektronika
Trzymaj z dala od dysków HDD, kart płatniczych i telefonów.
Rozruszniki Serca
Osoby z rozrusznikiem muszą zachować dystans min. 10 cm.
Nie dla dzieci
Ryzyko połknięcia. Połknięcie dwóch magnesów grozi śmiercią.
Kruchy materiał
Magnes to ceramika! Uderzenie o inny magnes spowoduje odpryski.
Do czego użyć tego magnesu?
Sprawdzone zastosowania dla wymiaru 15x10x2 mm
Elektronika i Czujniki
Idealny jako element wyzwalający dla czujników Halla oraz kontaktronów w systemach alarmowych. Płaski kształt (2mm) pozwala na ukrycie go w wąskich szczelinach obudowy.
Modelarstwo i Druk 3D
Stosowany do tworzenia niewidocznych zamknięć w modelach drukowanych 3D. Można go wprasować w wydruk lub wkleić w kieszeń zaprojektowaną w modelu CAD.
Meble i Fronty
Używany jako "domykacz" lekkich drzwiczek szafkowych, gdzie standardowe magnesy meblowe są za grube. Wymaga wklejenia w płytkie podfrezowanie.
Other deals
Advantages as well as disadvantages of NdFeB magnets.
In addition to their pulling strength, neodymium magnets provide the following advantages:
- They have unchanged lifting capacity, and over around ten years their performance decreases symbolically – ~1% (according to theory),
- Magnets very well protect themselves against demagnetization caused by external fields,
- A magnet with a smooth nickel surface has an effective appearance,
- Magnetic induction on the working part of the magnet is very high,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures reaching 230°C and above...
- Thanks to versatility in designing and the ability to adapt to complex applications,
- Huge importance in modern technologies – they are used in data components, brushless drives, medical equipment, and multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which enables their usage in miniature devices
Cons of neodymium magnets: weaknesses and usage proposals
- To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
- Neodymium magnets decrease their force 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 durability even at temperatures up to 230°C
- 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 complex shapes.
- Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these magnets can disrupt the diagnostic process medical in case of swallowing.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Maximum lifting force for a neodymium magnet – what affects it?
The load parameter shown represents the peak performance, recorded under ideal test conditions, meaning:
- with the use of a sheet made of low-carbon steel, ensuring full magnetic saturation
- possessing a thickness of min. 10 mm to ensure full flux closure
- with a plane perfectly flat
- without any air gap between the magnet and steel
- during pulling in a direction perpendicular to the mounting surface
- at room temperature
Determinants of practical lifting force of a magnet
Please note that the magnet holding will differ influenced by the following factors, in order of importance:
- Distance (betwixt the magnet and the plate), since even a microscopic clearance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
- Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of maximum force).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
- Material type – ideal substrate is high-permeability steel. Cast iron may generate lower lifting capacity.
- Surface quality – the more even the surface, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
- Thermal environment – temperature increase causes a temporary drop of force. Check the thermal limit for a given model.
* Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the holding force is lower. Moreover, even a small distance {between} the magnet’s surface and the plate reduces the lifting capacity.
Advantages as well as disadvantages of NdFeB magnets.
In addition to their pulling strength, neodymium magnets provide the following advantages:
- They have unchanged lifting capacity, and over around ten years their performance decreases symbolically – ~1% (according to theory),
- Magnets very well protect themselves against demagnetization caused by external fields,
- A magnet with a smooth nickel surface has an effective appearance,
- Magnetic induction on the working part of the magnet is very high,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures reaching 230°C and above...
- Thanks to versatility in designing and the ability to adapt to complex applications,
- Huge importance in modern technologies – they are used in data components, brushless drives, medical equipment, and multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which enables their usage in miniature devices
Cons of neodymium magnets: weaknesses and usage proposals
- To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
- Neodymium magnets decrease their force 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 durability even at temperatures up to 230°C
- 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 complex shapes.
- Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these magnets can disrupt the diagnostic process medical in case of swallowing.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Maximum lifting force for a neodymium magnet – what affects it?
The load parameter shown represents the peak performance, recorded under ideal test conditions, meaning:
- with the use of a sheet made of low-carbon steel, ensuring full magnetic saturation
- possessing a thickness of min. 10 mm to ensure full flux closure
- with a plane perfectly flat
- without any air gap between the magnet and steel
- during pulling in a direction perpendicular to the mounting surface
- at room temperature
Determinants of practical lifting force of a magnet
Please note that the magnet holding will differ influenced by the following factors, in order of importance:
- Distance (betwixt the magnet and the plate), since even a microscopic clearance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
- Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of maximum force).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
- Material type – ideal substrate is high-permeability steel. Cast iron may generate lower lifting capacity.
- Surface quality – the more even the surface, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
- Thermal environment – temperature increase causes a temporary drop of force. Check the thermal limit for a given model.
* Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the holding force is lower. Moreover, even a small distance {between} the magnet’s surface and the plate reduces the lifting capacity.
H&S for magnets
Protect data
Powerful magnetic fields can corrupt files on payment cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.
Maximum temperature
Watch the temperature. Heating the magnet to high heat will permanently weaken its magnetic structure and pulling force.
No play value
Absolutely store magnets away from children. Risk of swallowing is significant, and the consequences of magnets connecting inside the body are very dangerous.
Physical harm
Big blocks can crush fingers instantly. Never place your hand between two attracting surfaces.
Conscious usage
Before use, check safety instructions. Sudden snapping can break the magnet or hurt your hand. Be predictive.
ICD Warning
People with a ICD should keep an large gap from magnets. The magnetism can interfere with the functioning of the implant.
Allergic reactions
Some people suffer from a contact allergy to Ni, which is the standard coating for neodymium magnets. Frequent touching can result in an allergic reaction. We recommend wear safety gloves.
Magnets are brittle
Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
Compass and GPS
An intense magnetic field disrupts the operation of compasses in phones and GPS navigation. Keep magnets near a device to prevent breaking the sensors.
Fire risk
Drilling and cutting of neodymium magnets poses a fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
Warning!
Looking for details? Read our article: Why are neodymium magnets dangerous?
