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SM 25x150 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130289
GTIN/EAN: 5906301812821
Diameter Ø
25 mm [±1 mm]
Height
150 mm [±1 mm]
Weight
560 g
Magnetic Flux
~ 6 500 Gauss [±5%]
393.60 ZŁ with VAT / pcs + price for transport
320.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Lifting power as well as form of neodymium magnets can be calculated on our
online calculation tool.
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Technical details - SM 25x150 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x150 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130289 |
| GTIN/EAN | 5906301812821 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 150 mm [±1 mm] |
| Weight | 560 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 5 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 25x150 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 150 | mm (L) |
| Active length | 114 | mm |
| Section count | 4 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~560 | g |
| Active area | 90 | 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 (4 sections)
Chart 3: Temperature performance
Chemical composition
| 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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Advantages as well as disadvantages of rare earth magnets.
Advantages
- They do not lose magnetism, even after around ten years – the drop in lifting capacity is only ~1% (based on measurements),
- They possess excellent resistance to magnetism drop when exposed to opposing magnetic fields,
- The use of an refined finish of noble metals (nickel, gold, silver) causes the element to present itself better,
- Neodymium magnets generate maximum magnetic induction on a their surface, which ensures high operational effectiveness,
- Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
- Due to the possibility of accurate forming and customization to custom needs, NdFeB magnets can be manufactured in a wide range of shapes and sizes, which makes them more universal,
- Versatile presence in advanced technology sectors – they are utilized in computer drives, drive modules, medical equipment, also other advanced devices.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which allows their use in small systems
Disadvantages
- At very strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Due to limitations in realizing nuts and complex forms in magnets, we propose using cover - magnetic mount.
- Health risk to health – tiny shards of magnets are risky, in case of ingestion, which gains importance in the context of child health protection. It is also worth noting that tiny parts of these devices can complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities
Pull force analysis
Maximum lifting capacity of the magnet – what contributes to it?
- on a plate made of mild steel, perfectly concentrating the magnetic field
- with a cross-section minimum 10 mm
- with an ground contact surface
- with total lack of distance (without impurities)
- under vertical force direction (90-degree angle)
- at conditions approx. 20°C
Magnet lifting force in use – key factors
- Air gap (betwixt the magnet and the metal), since even a microscopic clearance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
- Angle of force application – maximum parameter is reached only during pulling at a 90° angle. The shear force of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
- Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
- Material composition – not every steel attracts identically. Alloy additives weaken the attraction effect.
- Surface finish – full contact is possible only on smooth steel. Rough texture create air cushions, reducing force.
- Thermal environment – temperature increase results in weakening of induction. It is worth remembering the thermal limit for a given model.
Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, in contrast under shearing force the holding force is lower. Moreover, even a small distance between the magnet and the plate decreases the holding force.
Safe handling of neodymium magnets
Heat sensitivity
Do not overheat. NdFeB magnets are susceptible to heat. If you need resistance above 80°C, ask us about special high-temperature series (H, SH, UH).
Protect data
Very strong magnetic fields can destroy records on payment cards, hard drives, and other magnetic media. Keep a distance of min. 10 cm.
Nickel coating and allergies
Allergy Notice: The Ni-Cu-Ni coating contains nickel. If skin irritation appears, cease handling magnets and use protective gear.
Threat to navigation
A strong magnetic field interferes with the operation of compasses in phones and GPS navigation. Do not bring magnets near a smartphone to prevent damaging the sensors.
Handling guide
Before starting, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Think ahead.
Danger to pacemakers
Individuals with a pacemaker have to maintain an large gap from magnets. The magnetic field can disrupt the operation of the life-saving device.
Crushing force
Pinching hazard: The pulling power is so great that it can result in blood blisters, pinching, and broken bones. Protective gloves are recommended.
Fire warning
Powder generated during machining of magnets is combustible. Avoid drilling into magnets unless you are an expert.
Fragile material
Protect your eyes. Magnets can explode upon uncontrolled impact, ejecting shards into the air. We recommend safety glasses.
Adults only
Absolutely store magnets out of reach of children. Ingestion danger is significant, and the consequences of magnets connecting inside the body are life-threatening.
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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