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SM 25x125 [2xM8] / N52 - magnetic separator
magnetic separator
Catalog no 130367
GTIN/EAN: 5906301813156
Diameter Ø
25 mm [±1 mm]
Height
125 mm [±1 mm]
Weight
460 g
Magnetic Flux
~ 8 500 Gauss [±5%]
393.60 ZŁ with VAT / pcs + price for transport
320.00 ZŁ net + 23% VAT / pcs
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Physical properties - SM 25x125 [2xM8] / N52 - magnetic separator
Specification / characteristics - SM 25x125 [2xM8] / N52 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130367 |
| GTIN/EAN | 5906301813156 |
| 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 | 460 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 8 500 Gauss [±5%] |
| Size/Mount Quantity | M8x2 |
| Polarity | circumferential - 4 poles |
| Casing Tube Thickness | 1 mm |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N52
| properties | values | units |
|---|---|---|
| remenance Br [min. - max.] ? | 14.2-14.7 | kGs |
| remenance Br [min. - max.] ? | 1420-1470 | mT |
| coercivity bHc ? | 10.8-12.5 | kOe |
| coercivity bHc ? | 860-995 | kA/m |
| actual internal force iHc | ≥ 12 | kOe |
| actual internal force iHc | ≥ 955 | kA/m |
| energy density [min. - max.] ? | 48-53 | BH max MGOe |
| energy density [min. - max.] ? | 380-422 | 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 25x125 [2xM8] / N52
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 125 | mm (L) |
| Active length | 89 | mm |
| Section count | 3 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~466 | g |
| Active area | 70 | 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) | 18.1 | kg (theor.) |
| Induction (surface) | ~8 500 | Gauss (Max) |
Chart 2: Field profile (3 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% |
Sustainability
| 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.
Strengths
- They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (according to literature),
- They show high resistance to demagnetization induced by external disturbances,
- The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- Magnets possess extremely high magnetic induction on the outer side,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures reaching 230°C and above...
- Possibility of individual forming as well as adapting to individual applications,
- Versatile presence in innovative solutions – they are used in magnetic memories, electric drive systems, diagnostic systems, also other advanced devices.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which enables their usage in miniature devices
Disadvantages
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets decrease their force 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
- We recommend casing - magnetic mount, due to difficulties in producing threads inside the magnet and complicated forms.
- Possible danger resulting from small fragments of magnets can be dangerous, if swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small components of these products can be problematic in diagnostics medical in case of swallowing.
- With budget limitations the cost of neodymium magnets is a challenge,
Lifting parameters
Maximum magnetic pulling force – what contributes to it?
- with the contact of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
- possessing a thickness of minimum 10 mm to avoid saturation
- with a surface free of scratches
- under conditions of ideal adhesion (metal-to-metal)
- for force applied at a right angle (pull-off, not shear)
- at standard ambient temperature
Lifting capacity in practice – influencing factors
- Air gap (between the magnet and the plate), because even a tiny distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to paint, corrosion or debris).
- Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of nominal force).
- Base massiveness – insufficiently thick plate causes magnetic saturation, causing part of the power to be wasted to the other side.
- Material type – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
- Surface finish – ideal contact is possible only on smooth steel. Rough texture reduce the real contact area, reducing force.
- Temperature influence – high temperature reduces pulling force. Too high temperature can permanently damage the magnet.
Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, however under shearing force the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate reduces the holding force.
Safety rules for work with neodymium magnets
Danger to pacemakers
Patients with a ICD have to keep an large gap from magnets. The magnetism can disrupt the functioning of the implant.
Thermal limits
Regular neodymium magnets (grade N) lose power when the temperature goes above 80°C. This process is irreversible.
GPS Danger
Remember: neodymium magnets generate a field that confuses sensitive sensors. Keep a safe distance from your phone, device, and GPS.
Adults only
Always store magnets out of reach of children. Risk of swallowing is high, and the effects of magnets connecting inside the body are life-threatening.
Electronic devices
Intense magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Stay away of at least 10 cm.
Immense force
Handle magnets consciously. Their powerful strength can surprise even experienced users. Plan your moves and respect their force.
Bodily injuries
Large magnets can crush fingers instantly. Never place your hand betwixt two strong magnets.
Flammability
Combustion risk: Neodymium dust is explosive. Avoid machining magnets without safety gear as this risks ignition.
Risk of cracking
NdFeB magnets are sintered ceramics, which means they are fragile like glass. Collision of two magnets leads to them breaking into small pieces.
Sensitization to coating
Some people suffer from a contact allergy to nickel, which is the standard coating for NdFeB magnets. Extended handling may cause dermatitis. It is best to use protective gloves.
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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