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SM 18x250 [2xM5] / N42 - magnetic separator
magnetic separator
Catalog no 130275
GTIN/EAN: 5906301812777
Diameter Ø
18 mm [±1 mm]
Height
250 mm [±1 mm]
Weight
0.01 g
Magnetic Flux
~ 5 400 Gauss [±5%]
553.50 ZŁ with VAT / pcs + price for transport
450.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Force as well as structure of neodymium magnets can be estimated using our
magnetic mass calculator.
Orders placed before 14:00 will be shipped the same business day.
Technical of the product - SM 18x250 [2xM5] / N42 - magnetic separator
Specification / characteristics - SM 18x250 [2xM5] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130275 |
| GTIN/EAN | 5906301812777 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 18 mm [±1 mm] |
| Height | 250 mm [±1 mm] |
| Weight | 0.01 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 5 400 Gauss [±5%] |
| Size/Mount Quantity | 2xM5 |
| Polarity | circumferential - 11 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 18x250 [2xM5] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 18 | mm |
| Total length | 250 | mm (L) |
| Active length | 214 | mm |
| Section count | 9 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~483 | g |
| Active area | 121 | 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) | 3.8 | kg (theor.) |
| Induction (surface) | ~5 400 | Gauss (Max) |
Chart 2: Field profile (9 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% |
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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Strengths as well as weaknesses of Nd2Fe14B magnets.
Benefits
- They retain magnetic properties for nearly ten years – the drop is just ~1% (in theory),
- Magnets effectively protect themselves against demagnetization caused by ambient magnetic noise,
- In other words, due to the aesthetic surface of silver, the element looks attractive,
- The surface of neodymium magnets generates a concentrated magnetic field – this is a distinguishing feature,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to freedom in forming and the capacity to adapt to complex applications,
- Significant place in electronics industry – they serve a role in hard drives, brushless drives, medical devices, also complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which makes them useful in miniature devices
Cons
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
- 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
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
- Limited ability of producing threads in the magnet and complex forms - recommended is cover - magnet mounting.
- Health risk resulting from small fragments of magnets are risky, in case of ingestion, which is particularly important in the context of child safety. Furthermore, tiny parts of these magnets can be problematic in diagnostics medical in case of swallowing.
- With large orders the cost of neodymium magnets can be a barrier,
Lifting parameters
Magnetic strength at its maximum – what affects it?
- on a plate made of structural steel, effectively closing the magnetic field
- possessing a thickness of minimum 10 mm to avoid saturation
- characterized by even structure
- with direct contact (no paint)
- during pulling in a direction vertical to the mounting surface
- in stable room temperature
Lifting capacity in practice – influencing factors
- Clearance – existence of any layer (paint, tape, air) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to pulling vertically. When slipping, the magnet exhibits much less (typically approx. 20-30% of maximum force).
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Chemical composition of the base – mild steel gives the best results. Alloy admixtures lower magnetic properties and holding force.
- Surface finish – full contact is obtained only on smooth steel. Any scratches and bumps create air cushions, reducing force.
- Temperature influence – hot environment reduces magnetic field. Too high temperature can permanently damage the magnet.
Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, whereas under parallel forces the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate lowers the holding force.
Safety rules for work with neodymium magnets
Material brittleness
Despite the nickel coating, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
Skin irritation risks
Certain individuals suffer from a sensitization to Ni, which is the standard coating for neodymium magnets. Extended handling might lead to skin redness. We recommend use protective gloves.
Serious injuries
Protect your hands. Two powerful magnets will snap together instantly with a force of massive weight, crushing anything in their path. Exercise extreme caution!
Danger to pacemakers
Health Alert: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have electronic implants.
Maximum temperature
Control the heat. Heating the magnet to high heat will permanently weaken its properties and pulling force.
Swallowing risk
Product intended for adults. Tiny parts can be swallowed, leading to serious injuries. Store out of reach of kids and pets.
Do not drill into magnets
Combustion risk: Neodymium dust is highly flammable. Avoid machining magnets without safety gear as this risks ignition.
Conscious usage
Use magnets with awareness. Their huge power can shock even experienced users. Be vigilant and do not underestimate their force.
Keep away from computers
Avoid bringing magnets near a wallet, laptop, or screen. The magnetism can irreversibly ruin these devices and wipe information from cards.
Precision electronics
Note: neodymium magnets generate a field that interferes with precision electronics. Maintain a separation from your phone, tablet, and navigation systems.
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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