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SM 25x300 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130295
GTIN/EAN: 5906301812883
Diameter Ø
25 mm [±1 mm]
Height
300 mm [±1 mm]
Weight
1160 g
Magnetic Flux
~ 6 500 Gauss [±5%]
836.40 ZŁ with VAT / pcs + price for transport
680.00 ZŁ net + 23% VAT / pcs
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Technical data of the product - SM 25x300 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x300 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130295 |
| GTIN/EAN | 5906301812883 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 300 mm [±1 mm] |
| Weight | 1160 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 11 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 25x300 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 300 | mm (L) |
| Active length | 264 | mm |
| Section count | 11 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~1119 | g |
| Active area | 207 | 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 (11 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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![SM 25x400 [2xM8] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-25x400-2xm8-daj.jpg "SM 25x400 [2xM8] / N42 - magnetic separator")
Advantages and disadvantages of neodymium magnets.
Strengths
- They do not lose power, even after approximately ten years – the drop in power is only ~1% (theoretically),
- They are resistant to demagnetization induced by external disturbances,
- In other words, due to the glossy surface of silver, the element becomes visually attractive,
- Magnets are distinguished by excellent magnetic induction on the working surface,
- 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...
- In view of the possibility of precise molding and customization to specialized solutions, magnetic components can be produced in a broad palette of geometric configurations, which increases their versatility,
- Fundamental importance in high-tech industry – they serve a role in computer drives, drive modules, diagnostic systems, also multitasking production systems.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Limitations
- To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
- 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 as well as 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 rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- We suggest casing - magnetic holder, due to difficulties in producing threads inside the magnet and complex forms.
- Possible danger resulting from small fragments of magnets can be dangerous, in case of ingestion, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small elements of these devices can complicate diagnosis medical after entering the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities
Pull force analysis
Optimal lifting capacity of a neodymium magnet – what contributes to it?
- on a base made of structural steel, perfectly concentrating the magnetic field
- with a cross-section minimum 10 mm
- with a surface cleaned and smooth
- without any clearance between the magnet and steel
- for force acting at a right angle (in the magnet axis)
- at conditions approx. 20°C
Practical aspects of lifting capacity – factors
- Clearance – existence of foreign body (paint, dirt, air) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (often approx. 20-30% of maximum force).
- Base massiveness – too thin steel does not accept the full field, causing part of the power to be wasted to the other side.
- Chemical composition of the base – mild steel attracts best. Higher carbon content decrease magnetic properties and lifting capacity.
- Surface finish – full contact is obtained only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
- Operating temperature – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, whereas under shearing force the load capacity is reduced by as much as 5 times. In addition, even a slight gap between the magnet’s surface and the plate reduces the holding force.
H&S for magnets
Data carriers
Avoid bringing magnets near a wallet, computer, or TV. The magnetism can destroy these devices and erase data from cards.
Do not underestimate power
Before starting, check safety instructions. Sudden snapping can break the magnet or hurt your hand. Think ahead.
Metal Allergy
Medical facts indicate that nickel (standard magnet coating) is a potent allergen. If you have an allergy, refrain from direct skin contact or opt for coated magnets.
Combustion hazard
Powder created during machining of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.
Maximum temperature
Watch the temperature. Heating the magnet above 80 degrees Celsius will destroy its properties and strength.
Physical harm
Protect your hands. Two large magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Be careful!
Eye protection
Despite metallic appearance, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
Health Danger
For implant holders: Powerful magnets disrupt electronics. Maintain minimum 30 cm distance or ask another person to handle the magnets.
Impact on smartphones
Navigation devices and smartphones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can decalibrate the sensors in your phone.
No play value
Absolutely keep magnets out of reach of children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are tragic.
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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