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SM 25x350 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130350
GTIN/EAN: 5906301812982
Diameter Ø
25 mm [±1 mm]
Height
350 mm [±1 mm]
Weight
1360 g
Magnetic Flux
~ 6 500 Gauss [±5%]
984.00 ZŁ with VAT / pcs + price for transport
800.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Parameters as well as shape of neodymium magnets can be analyzed with our
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Technical specification of the product - SM 25x350 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x350 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130350 |
| GTIN/EAN | 5906301812982 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 350 mm [±1 mm] |
| Weight | 1360 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 13 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 |
Table 1: Rod construction
SM 25x350 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 350 | mm (L) |
| Active length | 314 | mm |
| Section count | 13 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~1306 | g |
| Active area | 247 | cm² (Area) |
| Housing material | AISI 304 | 1.4301 (Inox) |
| Surface finish | Ra < 0.8 µm | Polished |
| Temp. class | 80°C | Standard (N) |
| Force loss (at max °C) | -12.8% | Reversible loss (physics) |
| Force (calculated) | 10.6 | kg (theor.) |
| Induction (surface) | ~6 500 | Gauss (Max) |
Chart 2: Field profile (13 sections)
Chart 3: Temperature performance
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 |
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Strengths and weaknesses of rare earth magnets.
Advantages
- They have constant strength, and over nearly 10 years their performance decreases symbolically – ~1% (according to theory),
- They maintain their magnetic properties even under close interference source,
- By covering with a reflective coating of gold, the element acquires an modern look,
- Magnetic induction on the working part of the magnet turns out to be maximum,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Possibility of exact creating as well as adjusting to precise conditions,
- Huge importance in advanced technology sectors – they are commonly used in mass storage devices, electric drive systems, advanced medical instruments, and multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which enables their usage in compact constructions
Weaknesses
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets decrease 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 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 resistant to moisture, when using outdoors
- Due to limitations in producing threads and complex shapes in magnets, we propose using cover - magnetic holder.
- Possible danger resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small elements of these devices can disrupt the diagnostic process medical when they are in the body.
- Due to complex production process, their price is higher than average,
Holding force characteristics
Magnetic strength at its maximum – what affects it?
- on a plate made of structural steel, effectively closing the magnetic field
- whose transverse dimension is min. 10 mm
- with an ideally smooth touching surface
- with direct contact (without coatings)
- for force applied at a right angle (in the magnet axis)
- in stable room temperature
Determinants of practical lifting force of a magnet
- Clearance – existence of foreign body (rust, dirt, gap) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
- Direction of force – maximum parameter is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
- Steel thickness – too thin steel causes magnetic saturation, causing part of the flux to be wasted to the other side.
- Material type – ideal substrate is pure iron steel. Cast iron may generate lower lifting capacity.
- Smoothness – full contact is possible only on polished steel. Rough texture create air cushions, reducing force.
- Heat – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under perpendicular forces, however under attempts to slide the magnet the load capacity is reduced by as much as 5 times. In addition, even a small distance between the magnet’s surface and the plate reduces the holding force.
Precautions when working with neodymium magnets
Phone sensors
Note: neodymium magnets produce a field that disrupts sensitive sensors. Keep a separation from your mobile, tablet, and navigation systems.
Crushing risk
Large magnets can break fingers instantly. Under no circumstances put your hand between two attracting surfaces.
Power loss in heat
Control the heat. Exposing the magnet above 80 degrees Celsius will ruin its properties and strength.
Safe operation
Before use, read the rules. Sudden snapping can destroy the magnet or injure your hand. Think ahead.
Electronic devices
Avoid bringing magnets close to a purse, laptop, or TV. The magnetic field can destroy these devices and erase data from cards.
Risk of cracking
Watch out for shards. Magnets can fracture upon violent connection, launching sharp fragments into the air. Wear goggles.
ICD Warning
People with a heart stimulator have to maintain an safe separation from magnets. The magnetism can stop the functioning of the implant.
Nickel coating and allergies
Allergy Notice: The Ni-Cu-Ni coating contains nickel. If skin irritation happens, cease handling magnets and wear gloves.
Adults only
Neodymium magnets are not suitable for play. Swallowing a few magnets may result in them attracting across intestines, which constitutes a critical condition and necessitates urgent medical intervention.
Fire risk
Fire hazard: Rare earth powder is explosive. Do not process magnets without safety gear as this risks ignition.
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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