![Separation magnetic rod SM 25x300 [2xM8] / N42](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Separation magnetic rod SM 25x300 [2xM8] / N42")
![SM 25x300 [2xM8] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-25x300-2xm8-kud.jpg)
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
bulk discounts:
Need more?
Call us
+48 888 99 98 98
or get in touch through
form
through our site.
Lifting power along with appearance of magnets can be calculated with our
our magnetic calculator.
Same-day shipping for orders placed before 14:00.
Detailed specification - 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 |
Other deals
![UMH 75x18x68 [M8] / N38 - magnetic holder with hook](https://cdn3.dhit.pl/graphics/products/umh-75x18x68-m8-wag.jpg "UMH 75x18x68 [M8] / N38 - magnetic holder with hook")
Advantages as well as disadvantages of rare earth magnets.
Advantages
- They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
- They retain their magnetic properties even under external field action,
- By applying a decorative layer of gold, the element presents an elegant look,
- The surface of neodymium magnets generates a powerful magnetic field – this is one of their assets,
- Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
- Due to the potential of flexible molding and customization to custom projects, magnetic components can be manufactured in a wide range of shapes and sizes, which expands the range of possible applications,
- Key role in modern industrial fields – they serve a role in HDD drives, electric drive systems, advanced medical instruments, and multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in small systems
Limitations
- At very strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop 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
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
- Due to limitations in creating threads and complicated shapes in magnets, we recommend using cover - magnetic mechanism.
- Possible danger resulting from small fragments of magnets are risky, if swallowed, which becomes key in the context of child safety. It is also worth noting that small elements of these products are able to be problematic in diagnostics 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
Lifting parameters
Maximum holding power of the magnet – what contributes to it?
- with the application of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
- whose thickness is min. 10 mm
- with a surface cleaned and smooth
- with zero gap (no coatings)
- for force acting at a right angle (in the magnet axis)
- in temp. approx. 20°C
Practical aspects of lifting capacity – factors
- Distance – the presence of any layer (rust, tape, gap) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits much less (typically approx. 20-30% of nominal force).
- Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of generating force.
- Chemical composition of the base – low-carbon steel attracts best. Alloy admixtures lower magnetic properties and holding force.
- Surface condition – smooth surfaces ensure maximum contact, which increases force. Rough surfaces reduce efficiency.
- Thermal environment – heating the magnet results in weakening of force. It is worth remembering the maximum operating temperature for a given model.
Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Additionally, even a small distance between the magnet’s surface and the plate lowers the lifting capacity.
Safe handling of NdFeB magnets
Bone fractures
Big blocks can smash fingers instantly. Never put your hand betwixt two attracting surfaces.
Choking Hazard
These products are not intended for children. Eating several magnets can lead to them pinching intestinal walls, which poses a critical condition and necessitates urgent medical intervention.
Beware of splinters
Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.
Power loss in heat
Avoid heat. Neodymium magnets are susceptible to temperature. If you need resistance above 80°C, inquire about special high-temperature series (H, SH, UH).
Pacemakers
For implant holders: Powerful magnets affect electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.
Electronic devices
Equipment safety: Strong magnets can ruin payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).
Immense force
Before use, check safety instructions. Sudden snapping can break the magnet or injure your hand. Think ahead.
Allergic reactions
Some people have a hypersensitivity to nickel, which is the typical protective layer for NdFeB magnets. Extended handling can result in skin redness. We recommend wear safety gloves.
Flammability
Powder generated during cutting of magnets is self-igniting. Avoid drilling into magnets without proper cooling and knowledge.
GPS and phone interference
An intense magnetic field disrupts the functioning of magnetometers in smartphones and GPS navigation. Do not bring magnets near a device to avoid damaging the sensors.
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
Rate the product
Your rating