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SM 25x375 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130351
GTIN/EAN: 5906301812999
Diameter Ø
25 mm [±1 mm]
Height
375 mm [±1 mm]
Weight
1460 g
Magnetic Flux
~ 6 500 Gauss [±5%]
1057.80 ZŁ with VAT / pcs + price for transport
860.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical parameters of the product - SM 25x375 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x375 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130351 |
| GTIN/EAN | 5906301812999 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 375 mm [±1 mm] |
| Weight | 1460 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 14 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 25x375 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 375 | mm (L) |
| Active length | 339 | mm |
| Section count | 14 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~1399 | g |
| Active area | 266 | 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 (14 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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Pros and cons of neodymium magnets.
Pros
- They have constant strength, and over nearly 10 years their attraction force decreases symbolically – ~1% (according to theory),
- Magnets effectively resist against loss of magnetization caused by ambient magnetic noise,
- Thanks to the elegant finish, the plating of nickel, gold-plated, or silver gives an professional appearance,
- The surface of neodymium magnets generates a maximum magnetic field – this is a key feature,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for action at temperatures approaching 230°C and above...
- Thanks to versatility in designing and the capacity to adapt to specific needs,
- Fundamental importance in high-tech industry – they are utilized in HDD drives, motor assemblies, medical devices, also other advanced devices.
- Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,
Cons
- At strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
- When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
- Limited possibility of making nuts in the magnet and complicated shapes - preferred is cover - mounting mechanism.
- Possible danger to health – tiny shards of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these magnets can be problematic in diagnostics medical in case of swallowing.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Lifting parameters
Detachment force of the magnet in optimal conditions – what it depends on?
- with the application of a sheet made of special test steel, guaranteeing full magnetic saturation
- possessing a thickness of at least 10 mm to ensure full flux closure
- characterized by lack of roughness
- under conditions of gap-free contact (metal-to-metal)
- for force applied at a right angle (pull-off, not shear)
- in temp. approx. 20°C
Key elements affecting lifting force
- Air gap (between the magnet and the plate), since even a very small distance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to paint, corrosion or debris).
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Steel thickness – insufficiently thick plate does not close the flux, causing part of the power to be escaped into the air.
- Steel type – mild steel gives the best results. Alloy steels lower magnetic properties and lifting capacity.
- Surface finish – full contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Temperature influence – hot environment reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity was determined using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under parallel forces the load capacity is reduced by as much as fivefold. Additionally, even a slight gap between the magnet and the plate reduces the lifting capacity.
Safe handling of neodymium magnets
Swallowing risk
NdFeB magnets are not intended for children. Accidental ingestion of multiple magnets can lead to them connecting inside the digestive tract, which constitutes a severe health hazard and necessitates immediate surgery.
Magnets are brittle
Protect your eyes. Magnets can fracture upon violent connection, launching sharp fragments into the air. Wear goggles.
Pacemakers
Life threat: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.
Cards and drives
Powerful magnetic fields can destroy records on credit cards, HDDs, and other magnetic media. Keep a distance of min. 10 cm.
Machining danger
Drilling and cutting of neodymium magnets carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.
Bodily injuries
Watch your fingers. Two powerful magnets will snap together instantly with a force of massive weight, crushing anything in their path. Be careful!
Impact on smartphones
Be aware: rare earth magnets generate a field that disrupts precision electronics. Keep a separation from your mobile, device, and GPS.
Nickel allergy
Nickel alert: The nickel-copper-nickel coating consists of nickel. If an allergic reaction appears, immediately stop handling magnets and wear gloves.
Permanent damage
Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and strength.
Powerful field
Use magnets consciously. Their immense force can shock even professionals. Plan your moves and do not underestimate their force.
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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