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SM 25x250 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130293
GTIN/EAN: 5906301812869
Diameter Ø
25 mm [±1 mm]
Height
250 mm [±1 mm]
Weight
0.01 g
Magnetic Flux
~ 6 500 Gauss [±5%]
688.80 ZŁ with VAT / pcs + price for transport
560.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Physical properties - SM 25x250 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x250 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130293 |
| GTIN/EAN | 5906301812869 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 250 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 - 9 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 |
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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Advantages as well as disadvantages of neodymium magnets.
Strengths
- They retain attractive force for almost 10 years – the loss is just ~1% (based on simulations),
- They possess excellent resistance to magnetic field loss when exposed to opposing magnetic fields,
- The use of an metallic finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- They are known for high magnetic induction at the operating surface, making them more effective,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures approaching 230°C and above...
- Possibility of exact creating as well as adjusting to atypical applications,
- Wide application in electronics industry – they are used in magnetic memories, drive modules, advanced medical instruments, also multitasking production systems.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Disadvantages
- At strong impacts they can crack, 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
- Magnets exposed to a humid environment can rust. Therefore while using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in realizing nuts and complicated forms in magnets, we propose using casing - magnetic holder.
- Possible danger to health – tiny shards of magnets are risky, when accidentally swallowed, which is particularly important in the context of child safety. It is also worth noting that small elements of these products can disrupt the diagnostic process medical when they are in the body.
- Due to neodymium price, their price is higher than average,
Holding force characteristics
Breakaway strength of the magnet in ideal conditions – what it depends on?
- using a base made of mild steel, serving as a ideal flux conductor
- possessing a massiveness of minimum 10 mm to ensure full flux closure
- with a plane perfectly flat
- with zero gap (no coatings)
- under perpendicular force vector (90-degree angle)
- at conditions approx. 20°C
Lifting capacity in practice – influencing factors
- Distance – existence of any layer (rust, tape, air) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
- Direction of force – maximum parameter is available only during perpendicular pulling. The resistance to sliding of the magnet along the plate is standardly several times smaller (approx. 1/5 of the lifting capacity).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
- Material composition – different alloys attracts identically. Alloy additives weaken the interaction with the magnet.
- Surface finish – ideal contact is obtained only on smooth steel. Rough texture create air cushions, reducing force.
- Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently damage the magnet.
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet’s surface and the plate lowers the holding force.
Safety rules for work with NdFeB magnets
Respect the power
Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.
Magnets are brittle
Despite the nickel coating, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.
Flammability
Fire hazard: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.
Heat warning
Standard neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.
Do not give to children
Neodymium magnets are not intended for children. Eating several magnets can lead to them pinching intestinal walls, which poses a severe health hazard and requires immediate surgery.
Compass and GPS
An intense magnetic field negatively affects the functioning of compasses in smartphones and GPS navigation. Do not bring magnets close to a device to avoid breaking the sensors.
Sensitization to coating
Medical facts indicate that the nickel plating (the usual finish) is a common allergen. If your skin reacts to metals, prevent touching magnets with bare hands and choose encased magnets.
ICD Warning
Warning for patients: Powerful magnets affect electronics. Keep minimum 30 cm distance or ask another person to work with the magnets.
Keep away from computers
Equipment safety: Strong magnets can ruin payment cards and delicate electronics (heart implants, hearing aids, timepieces).
Crushing risk
Large magnets can break fingers instantly. Under no circumstances place your hand betwixt two strong magnets.
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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