![Magnetic bar SM 25x275 [2xM8] / N52](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Magnetic bar 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?
Call us
+48 22 499 98 98
otherwise let us know using
request form
the contact page.
Lifting power and appearance of a magnet can be analyzed using our
online calculation tool.
Same-day processing for orders placed before 14:00.
Technical data of the product - 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
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 25x200 [2xM8] / N52 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-25x200-2xm8-jas.jpg "SM 25x200 [2xM8] / N52 - magnetic separator")
Pros as well as cons of rare earth magnets.
Benefits
- They retain attractive force for around 10 years – the loss is just ~1% (based on simulations),
- They show high resistance to demagnetization induced by external field influence,
- By applying a reflective coating of gold, the element has an proper look,
- The surface of neodymium magnets generates a unique magnetic field – this is a key feature,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Thanks to freedom in constructing and the ability to customize to complex applications,
- Significant place in innovative solutions – they serve a role in HDD drives, drive modules, medical equipment, also modern systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which enables their usage in small systems
Weaknesses
- 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.
- Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- We recommend casing - magnetic holder, due to difficulties in producing nuts inside the magnet and complex forms.
- Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small elements of these products can disrupt the diagnostic process medical when they are in the body.
- With large orders the cost of neodymium magnets can be a barrier,
Lifting parameters
Maximum lifting force for a neodymium magnet – what affects it?
- using a plate made of mild steel, acting as a magnetic yoke
- with a thickness no less than 10 mm
- characterized by smoothness
- with total lack of distance (without coatings)
- for force acting at a right angle (pull-off, not shear)
- at ambient temperature room level
Determinants of practical lifting force of a magnet
- Air gap (betwixt the magnet and the metal), since even a tiny clearance (e.g. 0.5 mm) results in a reduction in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
- Loading method – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet holds significantly lower power (often approx. 20-30% of maximum force).
- Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Steel grade – ideal substrate is high-permeability steel. Hardened steels may generate lower lifting capacity.
- Plate texture – ground elements guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
- Thermal conditions – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).
Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the holding force is lower. Additionally, even a slight gap between the magnet and the plate lowers the lifting capacity.
Warnings
Material brittleness
Despite metallic appearance, the material is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
Nickel allergy
Nickel alert: The nickel-copper-nickel coating contains nickel. If skin irritation happens, immediately stop working with magnets and use protective gear.
Choking Hazard
Product intended for adults. Tiny parts can be swallowed, leading to severe trauma. Store out of reach of children and animals.
Implant safety
For implant holders: Strong magnetic fields affect medical devices. Keep at least 30 cm distance or request help to work with the magnets.
Demagnetization risk
Control the heat. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and pulling force.
Data carriers
Device Safety: Neodymium magnets can ruin data carriers and sensitive devices (heart implants, medical aids, timepieces).
Crushing force
Protect your hands. Two powerful magnets will join immediately with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!
GPS Danger
Be aware: rare earth magnets produce a field that confuses sensitive sensors. Keep a separation from your phone, device, and navigation systems.
Do not underestimate power
Before starting, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.
Combustion hazard
Machining of neodymium magnets poses a fire risk. Magnetic powder reacts violently with oxygen and is hard 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
Rate the product
Your rating