SMZR 25x225 / N52 - magnetic separator with handle
magnetic separator with handle
Catalog no 140235
GTIN/EAN: 5906301813439
Diameter Ø
25 mm [±1 mm]
Height
225 mm [±1 mm]
Weight
740 g
Magnetic Flux
~ 8 500 Gauss [±5%]
615.00 ZŁ with VAT / pcs + price for transport
500.00 ZŁ net + 23% VAT / pcs
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Lifting power along with form of a neodymium magnet can be calculated with our
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Physical properties - SMZR 25x225 / N52 - magnetic separator with handle
Specification / characteristics - SMZR 25x225 / N52 - magnetic separator with handle
| properties | values |
|---|---|
| Cat. no. | 140235 |
| GTIN/EAN | 5906301813439 |
| 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 | 740 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 8 500 Gauss [±5%] |
| Size/Mount Quantity | M8x2 |
| Polarity | circumferential - 8 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
SMZR 25x225 / N52
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 225 | mm (L) |
| Active length | 205 | mm |
| Section count | 8 | modules |
| Dead zone | 20 | mm (Blaszka 2mm + Gwint 18mm) |
| Weight (est.) | ~839 | g |
| Active area | 161 | 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 (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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Strengths and weaknesses of Nd2Fe14B magnets.
Advantages
- Their magnetic field remains stable, and after around 10 years it drops only by ~1% (according to research),
- They possess excellent resistance to magnetic field loss due to opposing magnetic fields,
- The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- Magnets exhibit huge magnetic induction on the active area,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
- Thanks to freedom in forming and the ability to modify to individual projects,
- Fundamental importance in innovative solutions – they serve a role in HDD drives, drive modules, precision medical tools, as well as modern systems.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Disadvantages
- To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
- NdFeB magnets lose power 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 stable to moisture, when using outdoors
- Limited possibility of creating nuts in the magnet and complicated forms - recommended is casing - magnetic holder.
- Health risk resulting from small fragments of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, tiny parts of these magnets are able to disrupt the diagnostic process medical after entering 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
Pull force analysis
Optimal lifting capacity of a neodymium magnet – what it depends on?
- with the application of a sheet made of special test steel, guaranteeing maximum field concentration
- with a thickness of at least 10 mm
- with an polished touching surface
- under conditions of ideal adhesion (metal-to-metal)
- during pulling in a direction perpendicular to the plane
- in stable room temperature
Impact of factors on magnetic holding capacity in practice
- Distance – the presence of foreign body (paint, tape, air) acts as an insulator, which lowers capacity rapidly (even by 50% at 0.5 mm).
- Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits much less (typically approx. 20-30% of nominal force).
- Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Material composition – different alloys attracts identically. High carbon content worsen the attraction effect.
- Smoothness – full contact is possible only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
- Heat – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the lifting capacity is smaller. Moreover, even a small distance between the magnet and the plate reduces the lifting capacity.
Warnings
Beware of splinters
Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Impact of two magnets leads to them breaking into shards.
Electronic devices
Avoid bringing magnets near a wallet, laptop, or TV. The magnetism can destroy these devices and wipe information from cards.
Do not overheat magnets
Watch the temperature. Heating the magnet to high heat will ruin its magnetic structure and strength.
ICD Warning
Medical warning: Neodymium magnets can turn off heart devices and defibrillators. Stay away if you have medical devices.
Caution required
Exercise caution. Neodymium magnets attract from a distance and snap with massive power, often quicker than you can move away.
Mechanical processing
Mechanical processing of neodymium magnets poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.
Sensitization to coating
Some people experience a hypersensitivity to Ni, which is the standard coating for neodymium magnets. Frequent touching might lead to an allergic reaction. It is best to wear protective gloves.
GPS Danger
GPS units and mobile phones are extremely sensitive to magnetism. Direct contact with a strong magnet can decalibrate the sensors in your phone.
Physical harm
Large magnets can smash fingers instantly. Under no circumstances put your hand between two attracting surfaces.
This is not a toy
NdFeB magnets are not intended for children. Accidental ingestion of multiple magnets may result in them pinching intestinal walls, which constitutes a critical condition and necessitates urgent medical intervention.
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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