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SM 25x225 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130292
GTIN/EAN: 5906301812852
Diameter Ø
25 mm [±1 mm]
Height
225 mm [±1 mm]
Weight
860 g
Magnetic Flux
~ 6 500 Gauss [±5%]
615.00 ZŁ with VAT / pcs + price for transport
500.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical - SM 25x225 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x225 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130292 |
| GTIN/EAN | 5906301812852 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 225 mm [±1 mm] |
| Weight | 860 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 8 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 25x225 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 225 | mm (L) |
| Active length | 189 | mm |
| Section count | 8 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~839 | g |
| Active area | 148 | 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 (8 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 |
Other proposals
Strengths and weaknesses of rare earth magnets.
Advantages
- Their power remains stable, and after approximately 10 years it drops only by ~1% (according to research),
- They possess excellent resistance to magnetism drop due to external magnetic sources,
- In other words, due to the metallic surface of gold, the element gains a professional look,
- They are known for high magnetic induction at the operating surface, making them more effective,
- 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 option of accurate shaping and adaptation to unique requirements, magnetic components can be created in a broad palette of shapes and sizes, which amplifies use scope,
- Universal use in high-tech industry – they find application in HDD drives, brushless drives, precision medical tools, as well as industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in compact constructions
Disadvantages
- They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
- When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Due to limitations in creating nuts and complex shapes in magnets, we recommend using casing - magnetic mount.
- Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child safety. It is also worth noting that tiny parts of these devices are able to complicate diagnosis medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Lifting parameters
Maximum lifting force for a neodymium magnet – what affects it?
- with the contact of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
- with a cross-section no less than 10 mm
- with an polished contact surface
- without the slightest clearance between the magnet and steel
- for force acting at a right angle (pull-off, not shear)
- in stable room temperature
Magnet lifting force in use – key factors
- Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
- Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
- Material type – the best choice is pure iron steel. Cast iron may generate lower lifting capacity.
- Plate texture – ground elements ensure maximum contact, which increases force. Rough surfaces weaken the grip.
- Thermal environment – heating the magnet results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.
Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet and the plate decreases the load capacity.
Precautions when working with NdFeB magnets
Do not drill into magnets
Combustion risk: Neodymium dust is highly flammable. Do not process magnets without safety gear as this risks ignition.
Safe operation
Use magnets consciously. Their powerful strength can surprise even experienced users. Be vigilant and do not underestimate their power.
Allergy Warning
It is widely known that nickel (the usual finish) is a potent allergen. For allergy sufferers, prevent touching magnets with bare hands and opt for encased magnets.
Medical implants
Patients with a pacemaker should keep an absolute distance from magnets. The magnetism can disrupt the operation of the life-saving device.
Swallowing risk
Product intended for adults. Tiny parts can be swallowed, causing serious injuries. Keep away from children and animals.
Risk of cracking
Beware of splinters. Magnets can explode upon violent connection, launching sharp fragments into the air. Wear goggles.
Data carriers
Avoid bringing magnets close to a wallet, laptop, or screen. The magnetism can destroy these devices and erase data from cards.
Operating temperature
Avoid heat. Neodymium magnets are susceptible to temperature. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).
Threat to navigation
Note: rare earth magnets produce a field that confuses sensitive sensors. Maintain a safe distance from your mobile, tablet, and GPS.
Crushing force
Mind your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!
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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