![Separation magnetic rod SM 25x275 [2xM8] / N52](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Separation magnetic rod SM 25x275 [2xM8] / N52")
![SM 25x275 [2xM8] / N52 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-25x275-2xm8-vih.jpg)
SM 25x275 [2xM8] / N52 - magnetic separator
magnetic separator
Catalog no 130372
GTIN/EAN: 5906301813200
Diameter Ø
25 mm [±1 mm]
Height
275 mm [±1 mm]
Weight
1060 g
Magnetic Flux
~ 8 500 Gauss [±5%]
836.40 ZŁ with VAT / pcs + price for transport
680.00 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Contact us by phone
+48 22 499 98 98
alternatively send us a note via
contact form
our website.
Strength as well as structure of a neodymium magnet can be tested using our
magnetic mass calculator.
Same-day shipping for orders placed before 14:00.
Detailed specification - SM 25x275 [2xM8] / N52 - magnetic separator
Specification / characteristics - SM 25x275 [2xM8] / N52 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130372 |
| GTIN/EAN | 5906301813200 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 275 mm [±1 mm] |
| Weight | 1060 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 8 500 Gauss [±5%] |
| Size/Mount Quantity | M8x2 |
| Polarity | circumferential - 10 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 25x275 [2xM8] / N52
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 275 | mm (L) |
| Active length | 239 | mm |
| Section count | 10 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~1026 | g |
| Active area | 188 | 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 (10 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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
View also deals
![SM 25x300 [2xM8] / N52 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-25x300-2xm8-dij.jpg "SM 25x300 [2xM8] / N52 - magnetic separator")
Pros as well as cons of rare earth magnets.
Benefits
- They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
- They are resistant to demagnetization induced by presence of other magnetic fields,
- A magnet with a shiny gold surface has better aesthetics,
- Neodymium magnets generate maximum magnetic induction on a contact point, which ensures high operational effectiveness,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
- Thanks to freedom in constructing and the ability to customize to individual projects,
- Key role in future technologies – they serve a role in mass storage devices, drive modules, advanced medical instruments, as well as complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which makes them useful in miniature devices
Limitations
- To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (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
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
- We recommend a housing - magnetic mount, due to difficulties in creating threads inside the magnet and complex shapes.
- Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. It is also worth noting that small elements of these products can complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Holding force characteristics
Best holding force of the magnet in ideal parameters – what it depends on?
- with the application of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
- whose thickness reaches at least 10 mm
- with a plane perfectly flat
- under conditions of gap-free contact (surface-to-surface)
- under perpendicular force vector (90-degree angle)
- in temp. approx. 20°C
Practical aspects of lifting capacity – factors
- Gap (between the magnet and the metal), because even a very small distance (e.g. 0.5 mm) results in a reduction in lifting capacity by up to 50% (this also applies to paint, rust or debris).
- Force direction – catalog parameter refers to pulling vertically. When attempting to slide, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
- Steel thickness – insufficiently thick sheet causes magnetic saturation, causing part of the power to be escaped into the air.
- Steel grade – ideal substrate is pure iron steel. Stainless steels may generate lower lifting capacity.
- Surface condition – ground elements guarantee perfect abutment, which improves force. Rough surfaces reduce efficiency.
- Temperature influence – high temperature weakens pulling force. Too high temperature can permanently demagnetize the magnet.
Lifting capacity was assessed with the use of a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.
Safety rules for work with NdFeB magnets
Heat warning
Do not overheat. Neodymium magnets are susceptible to temperature. If you need operation above 80°C, ask us about HT versions (H, SH, UH).
Protective goggles
Despite metallic appearance, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
Mechanical processing
Powder created during cutting of magnets is flammable. Avoid drilling into magnets unless you are an expert.
Crushing force
Pinching hazard: The attraction force is so great that it can cause blood blisters, crushing, and even bone fractures. Use thick gloves.
Skin irritation risks
Studies show that the nickel plating (standard magnet coating) is a common allergen. If you have an allergy, prevent direct skin contact or choose coated magnets.
Health Danger
Warning for patients: Powerful magnets affect electronics. Keep minimum 30 cm distance or ask another person to handle the magnets.
Keep away from computers
Avoid bringing magnets near a wallet, computer, or screen. The magnetism can destroy these devices and erase data from cards.
Handling guide
Be careful. Neodymium magnets act from a long distance and snap with huge force, often faster than you can move away.
Choking Hazard
Absolutely store magnets out of reach of children. Choking hazard is significant, and the effects of magnets connecting inside the body are life-threatening.
GPS and phone interference
Be aware: rare earth magnets generate a field that interferes with sensitive sensors. Keep a separation from your phone, device, and GPS.
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