![Separation magnetic rod SM 25x300 [2xM8] / N52](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Separation magnetic rod SM 25x300 [2xM8] / N52")
![SM 25x300 [2xM8] / N52 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-25x300-2xm8-dij.jpg)
SM 25x300 [2xM8] / N52 - magnetic separator
magnetic separator
Catalog no 130373
GTIN/EAN: 5906301813217
- Diameter Ø
- 25 mm [±1 mm]
- Height
- 300 mm [±1 mm]
- Weight
- 1160 g
- Magnetic Flux
- ~ 8 500 Gauss [±5%]
910.20 zł with VAT / pcs + price for transport
740.00 zł net + 23% VAT / pcs
bulk discounts:
Need more?
Give us a call
+48 888 99 98 98
if you prefer get in touch by means of
contact form
the contact form page.
Weight and appearance of a neodymium magnet can be analyzed using our
magnetic mass calculator.
Orders submitted before 14:00 will be dispatched today!
Physical properties - SM 25x300 [2xM8] / N52 - magnetic separator
Specification / characteristics - SM 25x300 [2xM8] / N52 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130373 |
| GTIN/EAN | 5906301813217 |
| 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 | ~ 8 500 Gauss [±5%] |
| Size/Mount Quantity | M8x2 |
| Polarity | circumferential - 11 poles |
| Casing Tube Thickness | 1 mm |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N52
| properties | values | units |
|---|---|---|
| remenance Br [min. - max.] ? | 14.2-14.7 | kGs |
| remenance Br [min. - max.] ? | 1420-1470 | mT |
| coercivity bHc ? | 10.8-12.5 | kOe |
| coercivity bHc ? | 860-995 | kA/m |
| actual internal force iHc | ≥ 12 | kOe |
| actual internal force iHc | ≥ 955 | kA/m |
| energy density [min. - max.] ? | 48-53 | BH max MGOe |
| energy density [min. - max.] ? | 380-422 | 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] / N52
| 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) | 18.1 | kg (theor.) |
| Induction (surface) | ~8 500 | Gauss (Max) |
Chart 2: Field profile (11 sections)
Chart 3: Temperature performance
Material specification
| 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 |
Other deals
![SM 25x275 [2xM8] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-25x275-2xm8-boc.jpg "SM 25x275 [2xM8] / N42 - magnetic separator")
![HH 32x7.8 [M5] / N38 - through hole magnetic holder](https://cdn3.dhit.pl/graphics/products/hh-32x7.8-m5-war.jpg "HH 32x7.8 [M5] / N38 - through hole magnetic holder")
Strengths as well as weaknesses of Nd2Fe14B magnets.
Benefits
- They have constant strength, and over around 10 years their performance decreases symbolically – ~1% (according to theory),
- They have excellent resistance to weakening of magnetic properties due to external magnetic sources,
- Thanks to the reflective finish, the coating of nickel, gold, or silver gives an elegant appearance,
- The surface of neodymium magnets generates a concentrated magnetic field – this is one of their assets,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for functioning at temperatures reaching 230°C and above...
- Thanks to the ability of flexible forming and adaptation to specialized needs, NdFeB magnets can be created in a variety of geometric configurations, which amplifies use scope,
- Wide application in advanced technology sectors – they are used in hard drives, motor assemblies, advanced medical instruments, also technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which enables their usage in small systems
Weaknesses
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (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
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
- Due to limitations in creating threads and complex forms in magnets, we propose using casing - magnetic holder.
- Possible danger to health – tiny shards of magnets are risky, in case of ingestion, which gains importance in the context of child safety. Furthermore, small components of these devices are able to complicate diagnosis medical in case of swallowing.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Lifting parameters
Maximum holding power of the magnet – what contributes to it?
- with the contact of a sheet made of low-carbon steel, ensuring maximum field concentration
- whose thickness equals approx. 10 mm
- characterized by lack of roughness
- under conditions of no distance (metal-to-metal)
- during detachment in a direction perpendicular to the plane
- at standard ambient temperature
Lifting capacity in practice – influencing factors
- Distance – the presence of foreign body (paint, dirt, gap) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
- Direction of force – highest force is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is typically many times smaller (approx. 1/5 of the lifting capacity).
- Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
- Material type – the best choice is high-permeability steel. Stainless steels may generate lower lifting capacity.
- Surface quality – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
- Temperature – heating the magnet causes a temporary drop of force. Check the maximum operating temperature for a given model.
Lifting capacity testing was conducted on a smooth plate of suitable thickness, under perpendicular forces, whereas under parallel forces the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.
Safety rules for work with neodymium magnets
ICD Warning
Life threat: Strong magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.
Dust explosion hazard
Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this may cause fire.
Fragile material
Protect your eyes. Magnets can fracture upon uncontrolled impact, launching shards into the air. Eye protection is mandatory.
GPS Danger
GPS units and smartphones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.
Crushing force
Big blocks can break fingers instantly. Under no circumstances put your hand between two strong magnets.
Protect data
Avoid bringing magnets near a purse, computer, or TV. The magnetic field can permanently damage these devices and erase data from cards.
Immense force
Use magnets with awareness. Their immense force can shock even professionals. Plan your moves and respect their power.
Adults only
Only for adults. Small elements can be swallowed, leading to serious injuries. Store out of reach of kids and pets.
Maximum temperature
Regular neodymium magnets (N-type) lose power when the temperature surpasses 80°C. The loss of strength is permanent.
Nickel coating and allergies
Studies show that the nickel plating (the usual finish) is a potent allergen. If your skin reacts to metals, prevent direct skin contact or select coated magnets.
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