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SM 25x125 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130288
GTIN/EAN: 5906301812814
Diameter Ø
25 mm [±1 mm]
Height
125 mm [±1 mm]
Weight
0.01 g
Magnetic Flux
~ 6 500 Gauss [±5%]
319.80 ZŁ with VAT / pcs + price for transport
260.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical specification of the product - SM 25x125 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x125 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130288 |
| GTIN/EAN | 5906301812814 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 125 mm [±1 mm] |
| Weight | 0.01 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 4 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 |
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% |
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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Advantages and disadvantages of neodymium magnets.
Pros
- Their magnetic field is durable, and after approximately ten years it drops only by ~1% (according to research),
- They are noted for resistance to demagnetization induced by external magnetic fields,
- The use of an refined coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- Neodymium magnets achieve maximum magnetic induction on a their surface, which allows for strong attraction,
- Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
- In view of the ability of free shaping and customization to custom solutions, NdFeB magnets can be modeled in a wide range of forms and dimensions, which makes them more universal,
- Wide application in future technologies – they are used in HDD drives, electric drive systems, diagnostic systems, as well as technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which makes them useful in miniature devices
Weaknesses
- To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
- NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
- We suggest casing - magnetic mount, due to difficulties in realizing nuts inside the magnet and complicated shapes.
- Potential hazard related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that tiny parts of these products are able to disrupt the diagnostic process medical when they are in the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities
Lifting parameters
Magnetic strength at its maximum – what affects it?
- using a plate made of low-carbon steel, functioning as a circuit closing element
- with a thickness minimum 10 mm
- with an ideally smooth touching surface
- with zero gap (no paint)
- during detachment in a direction vertical to the mounting surface
- in temp. approx. 20°C
Practical lifting capacity: influencing factors
- Space between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Angle of force application – highest force is reached only during pulling at a 90° angle. The shear force of the magnet along the surface is typically several times smaller (approx. 1/5 of the lifting capacity).
- Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Steel grade – the best choice is pure iron steel. Cast iron may attract less.
- Surface condition – smooth surfaces ensure maximum contact, which improves field saturation. Rough surfaces reduce efficiency.
- Temperature influence – hot environment weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity was measured using a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, in contrast under parallel forces the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate reduces the holding force.
H&S for magnets
Choking Hazard
Neodymium magnets are not intended for children. Swallowing multiple magnets can lead to them attracting across intestines, which constitutes a direct threat to life and necessitates urgent medical intervention.
Pinching danger
Watch your fingers. Two large magnets will join immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!
Magnets are brittle
Despite the nickel coating, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.
Dust is flammable
Fire warning: Rare earth powder is explosive. Avoid machining magnets in home conditions as this may cause fire.
Danger to pacemakers
Warning for patients: Powerful magnets affect medical devices. Maintain minimum 30 cm distance or request help to handle the magnets.
Immense force
Handle with care. Neodymium magnets attract from a long distance and snap with huge force, often quicker than you can react.
Keep away from electronics
GPS units and smartphones are highly susceptible to magnetic fields. Direct contact with a strong magnet can permanently damage the internal compass in your phone.
Warning for allergy sufferers
Some people have a hypersensitivity to Ni, which is the standard coating for neodymium magnets. Prolonged contact can result in an allergic reaction. We recommend wear safety gloves.
Heat sensitivity
Do not overheat. NdFeB magnets are susceptible to temperature. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).
Data carriers
Powerful magnetic fields can destroy records on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.
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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