SMZR 25x250 / N52 - magnetic separator with handle
magnetic separator with handle
Catalog no 140236
GTIN/EAN: 5906301813446
Diameter Ø
25 mm [±1 mm]
Height
250 mm [±1 mm]
Weight
840 g
Magnetic Flux
~ 8 500 Gauss [±5%]
676.50 ZŁ with VAT / pcs + price for transport
550.00 ZŁ net + 23% VAT / pcs
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Physical properties - SMZR 25x250 / N52 - magnetic separator with handle
Specification / characteristics - SMZR 25x250 / N52 - magnetic separator with handle
| properties | values |
|---|---|
| Cat. no. | 140236 |
| GTIN/EAN | 5906301813446 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 250 mm [±1 mm] |
| Weight | 840 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 8 500 Gauss [±5%] |
| Size/Mount Quantity | M8x2 |
| Polarity | circumferential - 9 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 25x250 / N52
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 250 | mm (L) |
| Active length | 230 | mm |
| Section count | 10 | modules |
| Dead zone | 20 | mm (Blaszka 2mm + Gwint 18mm) |
| Weight (est.) | ~933 | g |
| Active area | 181 | 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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other offers
Strengths and weaknesses of neodymium magnets.
Pros
- They retain magnetic properties for nearly 10 years – the drop is just ~1% (based on simulations),
- They do not lose their magnetic properties even under strong external field,
- Thanks to the smooth finish, the layer of nickel, gold, or silver gives an professional appearance,
- Magnets possess excellent magnetic induction on the outer side,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Possibility of accurate machining and modifying to atypical applications,
- Wide application in modern industrial fields – they serve a role in computer drives, electromotive mechanisms, advanced medical instruments, as well as multitasking production systems.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Weaknesses
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening 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 extremely resistant to heat
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
- We recommend casing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complicated forms.
- Potential hazard related to microscopic parts of magnets are risky, if swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small components of these products are able to be problematic in diagnostics medical when they are in the body.
- With mass production the cost of neodymium magnets is a challenge,
Lifting parameters
Best holding force of the magnet in ideal parameters – what contributes to it?
- using a sheet made of low-carbon steel, acting as a circuit closing element
- with a thickness no less than 10 mm
- with a plane cleaned and smooth
- without the slightest clearance between the magnet and steel
- for force acting at a right angle (pull-off, not shear)
- in neutral thermal conditions
Lifting capacity in real conditions – factors
- Gap between magnet and steel – every millimeter of separation (caused e.g. by veneer or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
- Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Plate material – mild steel attracts best. Higher carbon content reduce magnetic properties and holding force.
- Surface condition – ground elements ensure maximum contact, which increases force. Uneven metal weaken the grip.
- Heat – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and at low temperatures they can be stronger (up to a certain limit).
Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.
Warnings
Avoid contact if allergic
It is widely known that nickel (the usual finish) is a potent allergen. If you have an allergy, avoid direct skin contact and opt for coated magnets.
Power loss in heat
Control the heat. Exposing the magnet above 80 degrees Celsius will ruin its magnetic structure and strength.
Compass and GPS
An intense magnetic field disrupts the operation of compasses in smartphones and navigation systems. Maintain magnets close to a smartphone to prevent damaging the sensors.
Hand protection
Protect your hands. Two powerful magnets will snap together immediately with a force of massive weight, crushing everything in their path. Exercise extreme caution!
Safe operation
Handle magnets with awareness. Their immense force can shock even experienced users. Stay alert and respect their power.
Safe distance
Avoid bringing magnets close to a purse, laptop, or TV. The magnetic field can permanently damage these devices and wipe information from cards.
Adults only
Always keep magnets away from children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are tragic.
Protective goggles
NdFeB magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets will cause them breaking into small pieces.
Machining danger
Dust created during machining of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.
Medical implants
Individuals with a pacemaker must keep an large gap from magnets. The magnetism can interfere with the functioning of the implant.
Tabela kosztu i czasu dostawy
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