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SM 25x325 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130349
GTIN/EAN: 5906301812975
Diameter Ø
25 mm [±1 mm]
Height
325 mm [±1 mm]
Weight
0.01 g
Magnetic Flux
~ 6 500 Gauss [±5%]
910.20 ZŁ with VAT / pcs + price for transport
740.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Force along with shape of a neodymium magnet can be tested using our
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Detailed specification - SM 25x325 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x325 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130349 |
| GTIN/EAN | 5906301812975 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 325 mm [±1 mm] |
| Weight | 0.01 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 12 poles |
| Casing Tube Thickness | 1 mm |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N42
| properties | values | units |
|---|---|---|
| remenance Br [min. - max.] ? | 12.9-13.2 | kGs |
| remenance Br [min. - max.] ? | 1290-1320 | mT |
| coercivity bHc ? | 10.8-12.0 | kOe |
| coercivity bHc ? | 860-955 | kA/m |
| actual internal force iHc | ≥ 12 | kOe |
| actual internal force iHc | ≥ 955 | kA/m |
| energy density [min. - max.] ? | 40-42 | BH max MGOe |
| energy density [min. - max.] ? | 318-334 | 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 |
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 as well as weaknesses of Nd2Fe14B magnets.
Benefits
- They do not lose power, even after approximately ten years – the drop in lifting capacity is only ~1% (based on measurements),
- They possess excellent resistance to magnetism drop due to external magnetic sources,
- A magnet with a metallic silver surface looks better,
- The surface of neodymium magnets generates a intense 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...
- Due to the possibility of accurate shaping and adaptation to unique needs, magnetic components can be created in a broad palette of geometric configurations, which expands the range of possible applications,
- Fundamental importance in modern industrial fields – they are utilized in data components, electric motors, medical devices, and other advanced devices.
- Compactness – despite small sizes they offer powerful magnetic field, 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.
- Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
- Limited ability of creating threads in the magnet and complex forms - recommended is cover - mounting mechanism.
- Health risk related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Furthermore, small components of these devices can be problematic in diagnostics medical when they are in the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities
Holding force characteristics
Best holding force of the magnet in ideal parameters – what affects it?
- with the use of a yoke made of special test steel, ensuring maximum field concentration
- possessing a thickness of at least 10 mm to avoid saturation
- characterized by smoothness
- without the slightest clearance between the magnet and steel
- under perpendicular application of breakaway force (90-degree angle)
- in temp. approx. 20°C
Magnet lifting force in use – key factors
- Gap between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
- Angle of force application – maximum parameter is reached only during pulling at a 90° angle. The shear force of the magnet along the plate is typically many times lower (approx. 1/5 of the lifting capacity).
- Metal thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
- Steel type – low-carbon steel attracts best. Alloy admixtures lower magnetic permeability and lifting capacity.
- Surface finish – ideal contact is possible only on polished steel. Rough texture create air cushions, reducing force.
- Temperature influence – high temperature weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.
H&S for magnets
Operating temperature
Monitor thermal conditions. Exposing the magnet to high heat will destroy its magnetic structure and strength.
Protective goggles
Despite the nickel coating, neodymium is brittle and not impact-resistant. Avoid impacts, as the magnet may shatter into hazardous fragments.
Flammability
Powder produced during cutting of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.
Crushing risk
Large magnets can smash fingers in a fraction of a second. Never place your hand betwixt two strong magnets.
Keep away from electronics
A powerful magnetic field interferes with the operation of compasses in phones and GPS navigation. Maintain magnets close to a smartphone to avoid breaking the sensors.
Danger to the youngest
Neodymium magnets are not toys. Eating multiple magnets may result in them connecting inside the digestive tract, which constitutes a critical condition and requires immediate surgery.
Powerful field
Use magnets consciously. Their immense force can shock even professionals. Plan your moves and respect their power.
Safe distance
Do not bring magnets close to a purse, laptop, or TV. The magnetic field can destroy these devices and erase data from cards.
Medical implants
Life threat: Neodymium magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.
Nickel coating and allergies
Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If skin irritation happens, immediately stop handling magnets and wear gloves.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
GLS kurier
Przesyłka będzie u Ciebie za 2-3 dni
14.99 ZŁ
InPost Paczkomaty 24/7
Przesyłka będzie u Ciebie za 1-2 dni
12.30 ZŁ
Płatność przy odbiorze (pobranie):
GLS kurier
Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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