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SM 32x250 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130299
GTIN/EAN: 5906301812920
Diameter Ø
32 mm [±1 mm]
Height
250 mm [±1 mm]
Weight
1240 g
Magnetic Flux
~ 8 000 Gauss [±5%]
750.30 ZŁ with VAT / pcs + price for transport
610.00 ZŁ net + 23% VAT / pcs
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Strength as well as appearance of a neodymium magnet can be verified on our
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Technical parameters - SM 32x250 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 32x250 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130299 |
| GTIN/EAN | 5906301812920 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 32 mm [±1 mm] |
| Height | 250 mm [±1 mm] |
| Weight | 1240 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 8 000 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 |
Table 1: Rod construction
SM 32x250 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 32 | mm |
| Total length | 250 | mm (L) |
| Active length | 214 | mm |
| Section count | 9 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~1528 | g |
| Active area | 215 | 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) | 26.2 | kg (theor.) |
| Induction (surface) | ~8 000 | 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% |
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 rare earth magnets.
Advantages
- They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (based on calculations),
- They retain their magnetic properties even under strong external field,
- Thanks to the elegant finish, the layer of nickel, gold, or silver gives an visually attractive appearance,
- Magnets possess impressive magnetic induction on the working surface,
- Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
- Possibility of accurate machining as well as adapting to complex needs,
- Key role in high-tech industry – they find application in computer drives, brushless drives, advanced medical instruments, also other advanced devices.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Disadvantages
- They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as 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
- They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- Due to limitations in creating nuts and complicated forms in magnets, we propose using cover - magnetic mechanism.
- Possible danger related to microscopic parts of magnets can be dangerous, in case of ingestion, which gains importance in the aspect of protecting the youngest. Additionally, small elements of these magnets can be problematic in diagnostics medical after entering the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Lifting parameters
Best holding force of the magnet in ideal parameters – what it depends on?
- with the application of a sheet made of low-carbon steel, ensuring full magnetic saturation
- whose thickness is min. 10 mm
- characterized by smoothness
- under conditions of gap-free contact (metal-to-metal)
- under perpendicular force vector (90-degree angle)
- at temperature room level
Key elements affecting lifting force
- Space between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Direction of force – maximum parameter is obtained only during perpendicular pulling. The force required to slide of the magnet along the plate is standardly many times lower (approx. 1/5 of the lifting capacity).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
- Material type – ideal substrate is high-permeability steel. Stainless steels may generate lower lifting capacity.
- Plate texture – ground elements ensure maximum contact, which improves field saturation. Uneven metal weaken the grip.
- Thermal environment – heating the magnet results in weakening of induction. Check the thermal limit for a given model.
Lifting capacity was assessed by applying a polished steel plate of suitable thickness (min. 20 mm), under vertically applied force, in contrast under shearing force the lifting capacity is smaller. Moreover, even a slight gap between the magnet’s surface and the plate lowers the load capacity.
Precautions when working with NdFeB magnets
Medical implants
Medical warning: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.
Material brittleness
Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. We recommend safety glasses.
Do not drill into magnets
Drilling and cutting of NdFeB material carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
Nickel allergy
Studies show that nickel (the usual finish) is a common allergen. If your skin reacts to metals, avoid direct skin contact or opt for coated magnets.
This is not a toy
Neodymium magnets are not suitable for play. Swallowing a few magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and requires urgent medical intervention.
Data carriers
Data protection: Neodymium magnets can ruin payment cards and sensitive devices (pacemakers, medical aids, mechanical watches).
GPS and phone interference
A strong magnetic field disrupts the functioning of compasses in phones and navigation systems. Keep magnets near a device to avoid breaking the sensors.
Physical harm
Risk of injury: The pulling power is so great that it can result in blood blisters, pinching, and broken bones. Protective gloves are recommended.
Operating temperature
Control the heat. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and pulling force.
Powerful field
Before use, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.
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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