SMZR 25x250 / N52 - magnetic separator with handle
magnetic separator with handle
Catalog no 140236
GTIN/EAN: 5906301813446
- Diameter Ø
- 25 mm [±1 mm]
- Height
- 250 mm [±1 mm]
- Weight
- 840 g
- Magnetic Flux
- ~ 8 500 Gauss [±5%]
676.50 zł with VAT / pcs + price for transport
550.00 zł net + 23% VAT / pcs
bulk discounts:
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Parameters as well as structure of a neodymium magnet can be estimated with our
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Physical properties - SMZR 25x250 / N52 - magnetic separator with handle
Specification / characteristics - SMZR 25x250 / N52 - magnetic separator with handle
| properties | values |
|---|---|
| Cat. no. | 140236 |
| GTIN/EAN | 5906301813446 |
| 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 | 840 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 8 500 Gauss [±5%] |
| Size/Mount Quantity | M8x2 |
| Polarity | circumferential - 9 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
SMZR 25x250 / N52
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 250 | mm (L) |
| Active length | 230 | mm |
| Section count | 10 | modules |
| Dead zone | 20 | mm (Blaszka 2mm + Gwint 18mm) |
| Weight (est.) | ~933 | g |
| Active area | 181 | 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 (10 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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Advantages and disadvantages of rare earth magnets.
Pros
- They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (based on calculations),
- They feature excellent resistance to weakening of magnetic properties when exposed to external fields,
- The use of an refined layer of noble metals (nickel, gold, silver) causes the element to look better,
- Neodymium magnets create maximum magnetic induction on a contact point, which ensures high operational effectiveness,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
- Possibility of exact machining as well as optimizing to complex needs,
- Wide application in electronics industry – they are commonly used in mass storage devices, electric drive systems, medical equipment, also multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which makes them useful in compact constructions
Cons
- Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a steel housing, which not only protects them against impacts but also increases their durability
- When exposed to high temperature, neodymium magnets suffer a drop in power. 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
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
- We suggest cover - magnetic holder, due to difficulties in creating threads inside the magnet and complex forms.
- Health risk resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the context of child health protection. Additionally, tiny parts of these devices are able to be problematic in diagnostics medical after entering the body.
- With mass production 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, ensuring full magnetic saturation
- possessing a thickness of minimum 10 mm to ensure full flux closure
- with an ground touching surface
- under conditions of ideal adhesion (metal-to-metal)
- for force acting at a right angle (in the magnet axis)
- at temperature approx. 20 degrees Celsius
Practical aspects of lifting capacity – factors
- Gap (betwixt the magnet and the metal), as even a microscopic clearance (e.g. 0.5 mm) results in a reduction in force by up to 50% (this also applies to paint, corrosion or dirt).
- Direction of force – highest force is reached only during perpendicular pulling. The force required to slide of the magnet along the surface is typically many times lower (approx. 1/5 of the lifting capacity).
- Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
- Material composition – not every steel attracts identically. High carbon content weaken the interaction with the magnet.
- Plate texture – smooth surfaces guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
- Operating temperature – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).
Lifting capacity was determined using a polished steel plate of optimal thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet and the plate lowers the load capacity.
Precautions when working with NdFeB magnets
Bone fractures
Danger of trauma: The attraction force is so immense that it can cause blood blisters, pinching, and broken bones. Use thick gloves.
Precision electronics
Navigation devices and mobile phones are extremely sensitive to magnetism. Direct contact with a strong magnet can permanently damage the sensors in your phone.
Danger to the youngest
Always store magnets out of reach of children. Ingestion danger is significant, and the effects of magnets clamping inside the body are tragic.
Keep away from computers
Intense magnetic fields can destroy records on credit cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.
Beware of splinters
NdFeB magnets are ceramic materials, meaning they are fragile like glass. Clashing of two magnets leads to them shattering into small pieces.
Warning for heart patients
Patients with a pacemaker should keep an large gap from magnets. The magnetic field can interfere with the operation of the life-saving device.
Do not overheat magnets
Do not overheat. Neodymium magnets are susceptible to temperature. If you need resistance above 80°C, inquire about HT versions (H, SH, UH).
Warning for allergy sufferers
Allergy Notice: The nickel-copper-nickel coating contains nickel. If an allergic reaction appears, immediately stop working with magnets and wear gloves.
Handling rules
Be careful. Neodymium magnets attract from a distance and connect with huge force, often faster than you can react.
Fire risk
Combustion risk: Neodymium dust is explosive. Do not process magnets in home conditions as this may cause fire.
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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