SM 32x450 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130303
GTIN/EAN: 5906301812968
Diameter Ø
32 mm [±1 mm]
Height
450 mm [±1 mm]
Weight
2410 g
Magnetic Flux
~ 8 000 Gauss [±5%]
1340.70 ZŁ with VAT / pcs + price for transport
1090.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Lifting power and form of a neodymium magnet can be tested on our
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Technical of the product - SM 32x450 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 32x450 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130303 |
| GTIN/EAN | 5906301812968 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 32 mm [±1 mm] |
| Height | 450 mm [±1 mm] |
| Weight | 2410 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 8 000 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 17 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 32x450 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 32 | mm |
| Total length | 450 | mm (L) |
| Active length | 414 | mm |
| Section count | 18 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~2751 | g |
| Active area | 416 | 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) | 26.2 | kg (theor.) |
| Induction (surface) | ~8 000 | Gauss (Max) |
Chart 2: Field profile (18 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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Strengths and weaknesses of neodymium magnets.
Benefits
- They retain magnetic properties for nearly ten years – the drop is just ~1% (in theory),
- They have excellent resistance to magnetic field loss due to opposing magnetic fields,
- The use of an refined layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- The surface of neodymium magnets generates a powerful magnetic field – this is a key feature,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Possibility of individual modeling as well as adjusting to atypical needs,
- Significant place in high-tech industry – they are commonly used in magnetic memories, electric motors, diagnostic systems, also multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which allows their use in miniature devices
Disadvantages
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a strong case, which not only protects them against impacts but also raises their durability
- When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- We suggest casing - magnetic holder, due to difficulties in creating threads inside the magnet and complicated shapes.
- Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. Furthermore, small components of these devices are able to be problematic in diagnostics medical in case of swallowing.
- With budget limitations the cost of neodymium magnets is a challenge,
Lifting parameters
Detachment force of the magnet in optimal conditions – what contributes to it?
- with the application of a sheet made of low-carbon steel, ensuring full magnetic saturation
- with a cross-section no less than 10 mm
- characterized by smoothness
- under conditions of no distance (surface-to-surface)
- under vertical force vector (90-degree angle)
- at conditions approx. 20°C
Practical aspects of lifting capacity – factors
- Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
- Load vector – highest force is available only during pulling at a 90° angle. The shear force of the magnet along the plate is usually several times lower (approx. 1/5 of the lifting capacity).
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
- Plate material – mild steel attracts best. Alloy admixtures reduce magnetic properties and lifting capacity.
- Surface finish – full contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Temperature influence – hot environment reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under perpendicular forces, in contrast under shearing force the load capacity is reduced by as much as 75%. Additionally, even a small distance between the magnet and the plate lowers the holding force.
H&S for magnets
Handling guide
Be careful. Neodymium magnets act from a distance and snap with massive power, often quicker than you can move away.
Avoid contact if allergic
It is widely known that the nickel plating (the usual finish) is a common allergen. If you have an allergy, avoid touching magnets with bare hands or select encased magnets.
GPS Danger
A powerful magnetic field interferes with the operation of compasses in phones and GPS navigation. Keep magnets close to a device to avoid damaging the sensors.
Keep away from children
NdFeB magnets are not intended for children. Swallowing a few magnets can lead to them attracting across intestines, which poses a direct threat to life and necessitates immediate surgery.
Electronic devices
Avoid bringing magnets close to a purse, computer, or TV. The magnetism can permanently damage these devices and erase data from cards.
Fragile material
Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
Life threat
People with a heart stimulator must keep an safe separation from magnets. The magnetism can disrupt the operation of the life-saving device.
Heat sensitivity
Keep cool. Neodymium magnets are sensitive to heat. If you need resistance above 80°C, inquire about HT versions (H, SH, UH).
Bodily injuries
Watch your fingers. Two powerful magnets will snap together instantly with a force of massive weight, destroying everything in their path. Exercise extreme caution!
Flammability
Mechanical processing of NdFeB material carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.
