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SM 25x100 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130287
GTIN/EAN: 5906301812807
Diameter Ø
25 mm [±1 mm]
Height
100 mm [±1 mm]
Weight
360 g
Magnetic Flux
~ 6 500 Gauss [±5%]
246.00 ZŁ with VAT / pcs + price for transport
200.00 ZŁ net + 23% VAT / pcs
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Technical specification - SM 25x100 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x100 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130287 |
| GTIN/EAN | 5906301812807 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 100 mm [±1 mm] |
| Weight | 360 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 3 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 25x100 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 100 | mm (L) |
| Active length | 64 | mm |
| Section count | 2 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~373 | g |
| Active area | 50 | 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 (2 sections)
Chart 3: Temperature performance
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Strengths and weaknesses of Nd2Fe14B magnets.
Pros
- They do not lose power, even after approximately 10 years – the decrease in power is only ~1% (based on measurements),
- Magnets very well protect themselves against demagnetization caused by external fields,
- By covering with a smooth layer of gold, the element has an proper look,
- Magnetic induction on the working layer of the magnet is strong,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
- Possibility of detailed shaping as well as modifying to atypical conditions,
- Universal use in high-tech industry – they find application in data components, motor assemblies, medical devices, also complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which allows their use in small systems
Limitations
- At 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.
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop 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 extremely resistant to heat
- 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 and corrosion.
- We recommend a housing - magnetic mount, due to difficulties in producing threads inside the magnet and complicated shapes.
- Possible danger related to microscopic parts of magnets are risky, when accidentally swallowed, which is particularly important in the context of child health protection. Additionally, tiny parts of these devices can complicate diagnosis medical when they are in the body.
- Due to complex production process, their price is relatively high,
Lifting parameters
Maximum lifting force for a neodymium magnet – what affects it?
- using a plate made of mild steel, functioning as a magnetic yoke
- with a cross-section no less than 10 mm
- characterized by lack of roughness
- with total lack of distance (without paint)
- during pulling in a direction perpendicular to the mounting surface
- in stable room temperature
Determinants of practical lifting force of a magnet
- Gap between surfaces – every millimeter of separation (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
- Angle of force application – highest force is available only during pulling at a 90° angle. The force required to slide of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
- Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
- Material type – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
- Surface condition – smooth surfaces ensure maximum contact, which improves field saturation. Rough surfaces weaken the grip.
- Operating temperature – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, in contrast under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate lowers the lifting capacity.
Safe handling of NdFeB magnets
Magnet fragility
Protect your eyes. Magnets can explode upon violent connection, launching shards into the air. Eye protection is mandatory.
Data carriers
Equipment safety: Neodymium magnets can ruin data carriers and sensitive devices (pacemakers, medical aids, mechanical watches).
Warning for allergy sufferers
Medical facts indicate that nickel (the usual finish) is a potent allergen. If your skin reacts to metals, refrain from touching magnets with bare hands or choose versions in plastic housing.
Life threat
For implant holders: Powerful magnets affect medical devices. Keep minimum 30 cm distance or request help to work with the magnets.
GPS and phone interference
Remember: rare earth magnets generate a field that confuses sensitive sensors. Keep a separation from your phone, device, and navigation systems.
Respect the power
Handle magnets with awareness. Their huge power can shock even experienced users. Plan your moves and respect their force.
Bodily injuries
Watch your fingers. Two powerful magnets will snap together immediately with a force of massive weight, destroying anything in their path. Exercise extreme caution!
Fire risk
Mechanical processing of neodymium magnets carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.
Demagnetization risk
Control the heat. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and strength.
Do not give to children
Strictly keep magnets away from children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are fatal.
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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