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SM 25x200 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130291
GTIN/EAN: 5906301812845
Diameter Ø
25 mm [±1 mm]
Height
200 mm [±1 mm]
Weight
760 g
Magnetic Flux
~ 6 500 Gauss [±5%]
541.20 ZŁ with VAT / pcs + price for transport
440.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Force as well as appearance of a neodymium magnet can be verified with our
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Detailed specification - SM 25x200 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x200 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130291 |
| GTIN/EAN | 5906301812845 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 200 mm [±1 mm] |
| Weight | 760 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 7 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 25x200 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 200 | mm (L) |
| Active length | 164 | mm |
| Section count | 7 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~746 | g |
| Active area | 129 | 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 (7 sections)
Chart 3: Temperature performance
Material specification
| 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 Nd2Fe14B magnets.
Strengths
- They virtually do not lose power, because even after 10 years the performance loss is only ~1% (in laboratory conditions),
- Neodymium magnets are distinguished by remarkably resistant to loss of magnetic properties caused by external field sources,
- In other words, due to the aesthetic finish of silver, the element gains a professional look,
- Magnets are characterized by excellent magnetic induction on the outer layer,
- 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...
- Thanks to the ability of accurate shaping and customization to individualized requirements, magnetic components can be manufactured in a broad palette of shapes and sizes, which makes them more universal,
- Fundamental importance in high-tech industry – they are utilized in data components, electric drive systems, medical equipment, and complex engineering applications.
- Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,
Cons
- At very strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
- Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
- Limited ability of creating threads in the magnet and complex shapes - preferred is a housing - magnet mounting.
- Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the context of child safety. Additionally, small components of these devices can complicate diagnosis medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Lifting parameters
Breakaway strength of the magnet in ideal conditions – what affects it?
- using a base made of mild steel, functioning as a ideal flux conductor
- possessing a thickness of at least 10 mm to avoid saturation
- with an ground touching surface
- with direct contact (without coatings)
- during detachment in a direction vertical to the plane
- in temp. approx. 20°C
Determinants of practical lifting force of a magnet
- Gap between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
- Force direction – catalog parameter refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
- Plate thickness – too thin steel does not close the flux, causing part of the power to be escaped to the other side.
- Chemical composition of the base – mild steel gives the best results. Higher carbon content reduce magnetic permeability and lifting capacity.
- Surface finish – full contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Temperature influence – high temperature reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.
Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the load capacity is reduced by as much as 75%. Additionally, even a small distance between the magnet and the plate decreases the load capacity.
Warnings
Sensitization to coating
Medical facts indicate that nickel (the usual finish) is a common allergen. If you have an allergy, prevent touching magnets with bare hands or opt for versions in plastic housing.
Demagnetization risk
Control the heat. Heating the magnet above 80 degrees Celsius will ruin its magnetic structure and pulling force.
Precision electronics
GPS units and mobile phones are highly sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can ruin the sensors in your phone.
Protect data
Powerful magnetic fields can corrupt files on credit cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.
Implant safety
Warning for patients: Strong magnetic fields disrupt electronics. Maintain at least 30 cm distance or request help to handle the magnets.
Serious injuries
Mind your fingers. Two large magnets will snap together instantly with a force of massive weight, crushing anything in their path. Exercise extreme caution!
Protective goggles
Neodymium magnets are sintered ceramics, which means they are fragile like glass. Impact of two magnets leads to them shattering into small pieces.
This is not a toy
Product intended for adults. Tiny parts pose a choking risk, leading to serious injuries. Keep out of reach of children and animals.
Handling guide
Before use, read the rules. Uncontrolled attraction can destroy the magnet or hurt your hand. Think ahead.
Fire risk
Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this risks ignition.
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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