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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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Product card - 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
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% |
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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Pros and cons of neodymium magnets.
Advantages
- They do not lose strength, even over approximately ten years – the reduction in strength is only ~1% (theoretically),
- They possess excellent resistance to magnetism drop when exposed to external magnetic sources,
- Thanks to the elegant finish, the coating of Ni-Cu-Ni, gold, or silver gives an visually attractive appearance,
- Magnets have exceptionally strong magnetic induction on the working surface,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for functioning at temperatures approaching 230°C and above...
- Possibility of accurate forming as well as modifying to specific applications,
- Huge importance in modern industrial fields – they are utilized in hard drives, electric motors, medical devices, and industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which makes them useful in small systems
Weaknesses
- To avoid cracks under impact, we suggest using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
- Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
- We recommend a housing - magnetic mount, due to difficulties in realizing nuts inside the magnet and complicated forms.
- Health risk to health – tiny shards of magnets can be dangerous, if swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small elements of these magnets can complicate diagnosis medical after entering the body.
- Due to neodymium price, their price exceeds standard values,
Holding force characteristics
Maximum magnetic pulling force – what contributes to it?
- using a plate made of high-permeability steel, acting as a magnetic yoke
- whose transverse dimension equals approx. 10 mm
- with an ideally smooth touching surface
- without any insulating layer between the magnet and steel
- during detachment in a direction vertical to the plane
- at ambient temperature room level
Practical lifting capacity: influencing factors
- Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
- Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
- Material type – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
- Surface quality – the more even the plate, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
- Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity was determined by applying a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, in contrast under shearing force the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.
H&S for magnets
Powerful field
Handle magnets with awareness. Their immense force can shock even professionals. Plan your moves and respect their force.
Nickel allergy
It is widely known that nickel (the usual finish) is a common allergen. For allergy sufferers, avoid direct skin contact or select versions in plastic housing.
GPS Danger
Note: neodymium magnets generate a field that confuses sensitive sensors. Keep a separation from your phone, tablet, and GPS.
Medical interference
Medical warning: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.
Cards and drives
Powerful magnetic fields can destroy records on payment cards, HDDs, and storage devices. Keep a distance of min. 10 cm.
Product not for children
Only for adults. Tiny parts pose a choking risk, causing severe trauma. Store away from children and animals.
Heat sensitivity
Do not overheat. NdFeB magnets are susceptible to heat. If you need operation above 80°C, inquire about HT versions (H, SH, UH).
Bodily injuries
Danger of trauma: The pulling power is so immense that it can result in hematomas, crushing, and even bone fractures. Use thick gloves.
Magnets are brittle
Watch out for shards. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. Wear goggles.
Dust explosion hazard
Mechanical processing of NdFeB material carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
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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