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SM 25x125 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130288
GTIN/EAN: 5906301812814
Diameter Ø
25 mm [±1 mm]
Height
125 mm [±1 mm]
Weight
460 g
Magnetic Flux
~ 6 500 Gauss [±5%]
319.80 ZŁ with VAT / pcs + price for transport
260.00 ZŁ net + 23% VAT / pcs
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Technical of the product - SM 25x125 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x125 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130288 |
| GTIN/EAN | 5906301812814 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 125 mm [±1 mm] |
| Weight | 460 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 4 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 25x125 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 125 | mm (L) |
| Active length | 89 | mm |
| Section count | 3 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~466 | g |
| Active area | 70 | 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 (3 sections)
Chart 3: Temperature performance
Elemental analysis
| 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.
Pros
- They retain attractive force for almost ten years – the loss is just ~1% (in theory),
- They maintain their magnetic properties even under external field action,
- Thanks to the smooth finish, the surface of Ni-Cu-Ni, gold, or silver gives an clean appearance,
- Magnets possess excellent magnetic induction on the surface,
- Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to modularity in shaping and the capacity to adapt to individual projects,
- Universal use in future technologies – they are used in hard drives, electromotive mechanisms, precision medical tools, and complex engineering applications.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Cons
- They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (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 extremely resistant to heat
- They rust in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- Limited possibility of creating nuts in the magnet and complicated shapes - recommended is a housing - magnet mounting.
- Health risk resulting from small fragments of magnets are risky, if swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small components of these magnets can disrupt the diagnostic process medical after entering the body.
- With large orders the cost of neodymium magnets is a challenge,
Lifting parameters
Detachment force of the magnet in optimal conditions – what it depends on?
- using a plate made of high-permeability steel, serving as a ideal flux conductor
- possessing a massiveness of minimum 10 mm to ensure full flux closure
- with a plane free of scratches
- under conditions of no distance (metal-to-metal)
- for force acting at a right angle (pull-off, not shear)
- at ambient temperature room level
Lifting capacity in real conditions – factors
- Distance (betwixt the magnet and the metal), because even a microscopic distance (e.g. 0.5 mm) results in a drastic drop in force by up to 50% (this also applies to varnish, corrosion or dirt).
- Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Steel thickness – too thin steel causes magnetic saturation, causing part of the power to be escaped into the air.
- Steel type – mild steel gives the best results. Alloy steels reduce magnetic permeability and holding force.
- Surface condition – ground elements ensure maximum contact, which improves force. Rough surfaces reduce efficiency.
- Operating temperature – NdFeB sinters have a negative temperature coefficient. At higher temperatures they are weaker, and in frost gain strength (up to a certain limit).
Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under shearing force the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate decreases the load capacity.
Safety rules for work with NdFeB magnets
GPS and phone interference
A strong magnetic field disrupts the operation of magnetometers in phones and GPS navigation. Keep magnets near a smartphone to prevent breaking the sensors.
Dust explosion hazard
Powder created during cutting of magnets is flammable. Avoid drilling into magnets unless you are an expert.
Handling rules
Handle with care. Rare earth magnets attract from a distance and snap with massive power, often faster than you can react.
Nickel coating and allergies
Medical facts indicate that the nickel plating (the usual finish) is a potent allergen. For allergy sufferers, prevent direct skin contact and select versions in plastic housing.
Choking Hazard
Adult use only. Small elements pose a choking risk, causing serious injuries. Store out of reach of children and animals.
Bone fractures
Protect your hands. Two powerful magnets will snap together instantly with a force of several hundred kilograms, crushing anything in their path. Be careful!
Magnetic media
Very strong magnetic fields can erase data on credit cards, hard drives, and storage devices. Maintain a gap of at least 10 cm.
Do not overheat magnets
Watch the temperature. Heating the magnet to high heat will permanently weaken its magnetic structure and strength.
Pacemakers
Life threat: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.
Magnet fragility
Neodymium magnets are ceramic materials, which means they are prone to chipping. Clashing of two magnets will cause them cracking into small pieces.
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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