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SM 25x150 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130289
GTIN/EAN: 5906301812821
Diameter Ø
25 mm [±1 mm]
Height
150 mm [±1 mm]
Weight
560 g
Magnetic Flux
~ 6 500 Gauss [±5%]
467.40 ZŁ with VAT / pcs + price for transport
380.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Lifting power and shape of magnetic components can be analyzed with our
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Physical properties - SM 25x150 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x150 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130289 |
| GTIN/EAN | 5906301812821 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 150 mm [±1 mm] |
| Weight | 560 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 5 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 25x150 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 150 | mm (L) |
| Active length | 114 | mm |
| Section count | 4 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~560 | g |
| Active area | 90 | 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 (4 sections)
Chart 3: Temperature performance
Chemical composition
| 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 |
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Advantages and disadvantages of neodymium magnets.
Strengths
- They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (based on calculations),
- They possess excellent resistance to magnetism drop as a result of opposing magnetic fields,
- By applying a lustrous coating of gold, the element acquires an proper look,
- Magnetic induction on the working part of the magnet remains strong,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
- Thanks to versatility in forming and the ability to modify to individual projects,
- Fundamental importance in future technologies – they find application in computer drives, brushless drives, precision medical tools, and industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which allows their use in miniature devices
Limitations
- At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (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
- Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
- Due to limitations in creating nuts and complicated forms in magnets, we recommend using cover - magnetic mechanism.
- Potential hazard to health – tiny shards of magnets pose a threat, in case of ingestion, which gains importance in the context of child safety. It is also worth noting that small components of these devices can be problematic in diagnostics medical when they are in the body.
- With large orders the cost of neodymium magnets can be a barrier,
Pull force analysis
Highest magnetic holding force – what it depends on?
- on a base made of mild steel, perfectly concentrating the magnetic field
- with a thickness minimum 10 mm
- characterized by smoothness
- without the slightest clearance between the magnet and steel
- under perpendicular force vector (90-degree angle)
- at temperature approx. 20 degrees Celsius
Lifting capacity in real conditions – factors
- Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Angle of force application – highest force is reached only during perpendicular pulling. The shear force of the magnet along the surface is typically several times smaller (approx. 1/5 of the lifting capacity).
- Steel thickness – insufficiently thick sheet does not accept the full field, causing part of the flux to be escaped to the other side.
- Material type – the best choice is high-permeability steel. Cast iron may generate lower lifting capacity.
- Base smoothness – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
- Thermal environment – temperature increase causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.
Lifting capacity testing was performed on a smooth plate of optimal thickness, under a perpendicular pulling force, however under parallel forces the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet’s surface and the plate lowers the holding force.
H&S for magnets
Phone sensors
GPS units and smartphones are extremely susceptible to magnetism. Close proximity with a strong magnet can decalibrate the sensors in your phone.
Mechanical processing
Combustion risk: Rare earth powder is highly flammable. Do not process magnets without safety gear as this risks ignition.
Sensitization to coating
A percentage of the population have a contact allergy to nickel, which is the common plating for neodymium magnets. Frequent touching can result in skin redness. We strongly advise wear protective gloves.
Keep away from children
Product intended for adults. Tiny parts pose a choking risk, causing severe trauma. Store out of reach of kids and pets.
Danger to pacemakers
Patients with a heart stimulator should maintain an safe separation from magnets. The magnetism can stop the operation of the implant.
Crushing force
Risk of injury: The pulling power is so immense that it can result in hematomas, pinching, and even bone fractures. Use thick gloves.
Demagnetization risk
Do not overheat. Neodymium magnets are susceptible to temperature. If you require operation above 80°C, look for special high-temperature series (H, SH, UH).
Respect the power
Before use, read the rules. Sudden snapping can break the magnet or hurt your hand. Be predictive.
Electronic hazard
Powerful magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Stay away of at least 10 cm.
Magnet fragility
Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.
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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