SM 32x350 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130301
GTIN/EAN: 5906301812944
Diameter Ø
32 mm [±1 mm]
Height
350 mm [±1 mm]
Weight
1870 g
Magnetic Flux
~ 8 000 Gauss [±5%]
1045.50 ZŁ with VAT / pcs + price for transport
850.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical specification - SM 32x350 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 32x350 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130301 |
| GTIN/EAN | 5906301812944 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 32 mm [±1 mm] |
| Height | 350 mm [±1 mm] |
| Weight | 1870 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 8 000 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 32x350 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 32 | mm |
| Total length | 350 | mm (L) |
| Active length | 314 | mm |
| Section count | 13 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~2139 | g |
| Active area | 316 | 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 (13 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% |
Sustainability
| 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.
Pros
- They have unchanged lifting capacity, and over more than ten years their attraction force decreases symbolically – ~1% (in testing),
- They possess excellent resistance to magnetic field loss as a result of external fields,
- In other words, due to the aesthetic surface of gold, the element gains visual value,
- Magnetic induction on the top side of the magnet turns out to be exceptional,
- 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...
- Possibility of exact forming and optimizing to defined conditions,
- Wide application in innovative solutions – they are commonly used in computer drives, electric drive systems, precision medical tools, also complex engineering applications.
- Thanks to their power density, small magnets offer high operating force, in miniature format,
Weaknesses
- They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
- NdFeB magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- 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, in case of application outdoors
- We recommend casing - magnetic holder, due to difficulties in realizing nuts inside the magnet and complicated shapes.
- Possible danger resulting from small fragments of magnets can be dangerous, if swallowed, which becomes key in the aspect of protecting the youngest. Additionally, small elements of these devices are able to be problematic in diagnostics medical when they are in the body.
- Due to neodymium price, their price is higher than average,
Holding force characteristics
Detachment force of the magnet in optimal conditions – what affects it?
- on a base made of mild steel, perfectly concentrating the magnetic field
- whose transverse dimension equals approx. 10 mm
- with a surface perfectly flat
- with total lack of distance (no coatings)
- during detachment in a direction perpendicular to the mounting surface
- at standard ambient temperature
Practical lifting capacity: influencing factors
- Distance – the presence of any layer (rust, dirt, air) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
- Load vector – maximum parameter is available only during pulling at a 90° angle. The shear force of the magnet along the plate is usually several times smaller (approx. 1/5 of the lifting capacity).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
- Material composition – not every steel attracts identically. High carbon content worsen the interaction with the magnet.
- Surface quality – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Unevenness creates an air distance.
- Thermal conditions – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost gain strength (up to a certain limit).
Lifting capacity was measured by applying a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, 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 lowers the holding force.
Safe handling of NdFeB magnets
Nickel coating and allergies
It is widely known that nickel (standard magnet coating) is a common allergen. If your skin reacts to metals, prevent direct skin contact and choose coated magnets.
Combustion hazard
Mechanical processing of neodymium magnets carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
Powerful field
Handle with care. Rare earth magnets act from a long distance and connect with massive power, often faster than you can move away.
Thermal limits
Control the heat. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and strength.
Medical interference
For implant holders: Powerful magnets disrupt medical devices. Keep minimum 30 cm distance or request help to work with the magnets.
Keep away from children
These products are not toys. Accidental ingestion of multiple magnets may result in them connecting inside the digestive tract, which poses a direct threat to life and requires urgent medical intervention.
Cards and drives
Powerful magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Maintain a gap of at least 10 cm.
Shattering risk
Despite metallic appearance, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
Crushing force
Big blocks can crush fingers in a fraction of a second. Do not place your hand betwixt two strong magnets.
GPS Danger
GPS units and mobile phones are extremely sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can decalibrate the sensors in your phone.
