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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%]
393.60 ZŁ with VAT / pcs + price for transport
320.00 ZŁ net + 23% VAT / pcs
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Product card - 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
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 |
See also proposals
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![HH 42x8.8 [M6] / N38 - through hole magnetic holder](https://cdn3.dhit.pl/graphics/products/hh-42x8.8-m6-hin.jpg "HH 42x8.8 [M6] / N38 - through hole magnetic holder")
![SM 32x400 [2xM8] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-32x400-2xm8-tep.jpg "SM 32x400 [2xM8] / N42 - magnetic separator")
Strengths as well as weaknesses of neodymium magnets.
Strengths
- They retain attractive force for around 10 years – the drop is just ~1% (based on simulations),
- They do not lose their magnetic properties even under strong external field,
- In other words, due to the glossy layer of nickel, the element looks attractive,
- Neodymium magnets generate maximum magnetic induction on a small surface, which allows for strong attraction,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the form) even at a temperature of 230°C or more...
- Possibility of custom shaping as well as adapting to atypical needs,
- Versatile presence in innovative solutions – they find application in data components, brushless drives, precision medical tools, also complex engineering applications.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Limitations
- To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
- Neodymium magnets decrease 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 durability even at temperatures up to 230°C
- They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- Due to limitations in realizing threads and complex shapes in magnets, we recommend using cover - magnetic mount.
- Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, small components of these magnets can complicate diagnosis medical when they are in the body.
- Due to neodymium price, their price exceeds standard values,
Lifting parameters
Detachment force of the magnet in optimal conditions – what it depends on?
- with the use of a sheet made of special test steel, guaranteeing full magnetic saturation
- whose thickness is min. 10 mm
- characterized by smoothness
- under conditions of ideal adhesion (surface-to-surface)
- for force applied at a right angle (pull-off, not shear)
- at ambient temperature room level
Magnet lifting force in use – key factors
- Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Load vector – maximum parameter is reached only during pulling at a 90° angle. The shear force of the magnet along the plate is usually several times lower (approx. 1/5 of the lifting capacity).
- Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
- Chemical composition of the base – low-carbon steel attracts best. Higher carbon content lower magnetic permeability and holding force.
- Surface finish – full contact is possible only on smooth steel. Rough texture create air cushions, reducing force.
- Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and in frost gain strength (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 parallel forces the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.
Safe handling of neodymium magnets
Safe operation
Handle magnets with awareness. Their huge power can surprise even professionals. Plan your moves and do not underestimate their power.
Machining danger
Dust created during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.
Crushing risk
Mind your fingers. Two large magnets will join immediately with a force of massive weight, crushing everything in their path. Exercise extreme caution!
Permanent damage
Do not overheat. NdFeB magnets are sensitive to heat. If you require resistance above 80°C, ask us about HT versions (H, SH, UH).
Nickel coating and allergies
A percentage of the population suffer from a contact allergy to Ni, which is the standard coating for neodymium magnets. Prolonged contact might lead to a rash. We suggest wear protective gloves.
Electronic devices
Very strong magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Maintain a gap of at least 10 cm.
Swallowing risk
Adult use only. Small elements pose a choking risk, leading to serious injuries. Store out of reach of kids and pets.
ICD Warning
Health Alert: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.
Compass and GPS
Remember: neodymium magnets generate a field that interferes with sensitive sensors. Keep a safe distance from your phone, device, and navigation systems.
Material brittleness
Despite the nickel coating, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
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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