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SMZR 25x200 / N52 - magnetic separator with handle

magnetic separator with handle

Catalog no 140444

GTIN/EAN: 5906301813507

5.00

Diameter Ø

25 mm [±1 mm]

Height

200 mm [±1 mm]

Weight

0.01 g

Magnetic Flux

~ 8 500 Gauss [±5%]

553.50 with VAT / pcs + price for transport

450.00 ZŁ net + 23% VAT / pcs

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Technical of the product - SMZR 25x200 / N52 - magnetic separator with handle

Specification / characteristics - SMZR 25x200 / N52 - magnetic separator with handle

properties
properties values
Cat. no. 140444
GTIN/EAN 5906301813507
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 25 mm [±1 mm]
Height 200 mm [±1 mm]
Weight 0.01 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 500 Gauss [±5%]
Size/Mount Quantity M8x2
Polarity circumferential - 7 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SMZR 25x200 / N52 - magnetic separator with handle
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

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 25x200 / N52

Parameter Value Description / Unit
Diameter (Ø) 25 mm
Total length 200 mm (L)
Active length 180 mm
Section count 7 modules
Dead zone 20 mm (Blaszka 2mm + Gwint 18mm)
Weight (est.) ~746 g
Active area 141 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 (7 sections)

Chart 3: Temperature performance

Technical and environmental data
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%
Ecology and recycling (GPSR)
recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 140444-2026
Quick Unit Converter
Pulling force

Magnetic Field

Other products

This gripper serves for instant distinction of steel (iron) from non-ferrous metals. Thanks to it, you can easily and quickly assess the value of scrap and avoid mistakes. It can be used to collect scattered nails and screws from hard-to-reach places.
The tool reacts to carbon steel but does not attract most stainless steels (austenitic, like AISI 304). If the magnet does not attract the tested element, it is probably non-ferrous metal or acid-resistant steel.
Neodymium separators are much lighter and many times stronger than traditional ferrite ones. Thanks to this, work is more comfortable, and detection faster and more certain. The neodymium version is currently the standard in professional scrap yards.
The magnet is completely shielded from mechanical impacts, which extends its lifespan. A solid handle (wooden, rubber, or plastic) ensures a firm and comfortable grip. Thanks to such an armored build, the separator is resistant to difficult conditions prevailing at a scrap yard.
It is a simple and reliable construction without moving parts, so cleaning consists of removing scrap. If you are looking for automatic dropping, ask about models with a magnetic release system. In the case of strong magnets, it is easiest to slide the metal to the side of the housing instead of tearing it straight off.

Advantages and disadvantages of Nd2Fe14B magnets.

Benefits

Apart from their strong power, neodymium magnets have these key benefits:
  • They do not lose magnetism, even over nearly 10 years – the decrease in strength is only ~1% (theoretically),
  • Magnets effectively defend themselves against loss of magnetization caused by ambient magnetic noise,
  • By using a decorative coating of nickel, the element presents an nice look,
  • The surface of neodymium magnets generates a strong magnetic field – this is a key feature,
  • Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
  • Possibility of exact creating as well as optimizing to concrete applications,
  • Huge importance in modern technologies – they are utilized in magnetic memories, electromotive mechanisms, medical devices, as well as complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which allows their use in compact constructions

Disadvantages

Problematic aspects of neodymium magnets and ways of using them
  • At strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in producing nuts and complex shapes in magnets, we propose using cover - magnetic mechanism.
  • Possible danger related to microscopic parts of magnets pose a threat, in case of ingestion, which becomes key in the context of child health protection. It is also worth noting that tiny parts of these products are able to be problematic in diagnostics medical when they are in the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Optimal lifting capacity of a neodymium magnetwhat affects it?

The load parameter shown represents the maximum value, measured under optimal environment, meaning:
  • on a block made of structural steel, effectively closing the magnetic field
  • whose transverse dimension reaches at least 10 mm
  • characterized by even structure
  • with direct contact (no paint)
  • for force acting at a right angle (in the magnet axis)
  • in stable room temperature

What influences lifting capacity in practice

In real-world applications, the actual lifting capacity depends on several key aspects, ranked from crucial:
  • Distance (betwixt the magnet and the metal), because even a tiny distance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
  • Angle of force application – maximum parameter is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
  • Element thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Metal type – not every steel attracts identically. Alloy additives worsen the attraction effect.
  • Base smoothness – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
  • Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under perpendicular forces, in contrast under parallel forces the load capacity is reduced by as much as fivefold. Additionally, even a small distance between the magnet and the plate decreases the lifting capacity.

Precautions when working with neodymium magnets
Implant safety

Medical warning: Strong magnets can turn off heart devices and defibrillators. Stay away if you have medical devices.

Allergic reactions

Studies show that nickel (the usual finish) is a potent allergen. If your skin reacts to metals, avoid direct skin contact and opt for encased magnets.

Dust explosion hazard

Combustion risk: Rare earth powder is highly flammable. Do not process magnets in home conditions as this may cause fire.

Operating temperature

Do not overheat. Neodymium magnets are sensitive to heat. If you need resistance above 80°C, look for special high-temperature series (H, SH, UH).

Precision electronics

Navigation devices and mobile phones are highly susceptible to magnetism. Direct contact with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Fragile material

NdFeB magnets are ceramic materials, which means they are very brittle. Impact of two magnets will cause them shattering into small pieces.

Adults only

Always keep magnets away from children. Risk of swallowing is significant, and the consequences of magnets clamping inside the body are tragic.

Powerful field

Handle magnets with awareness. Their immense force can shock even professionals. Be vigilant and do not underestimate their power.

Serious injuries

Risk of injury: The pulling power is so great that it can cause hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Keep away from computers

Very strong magnetic fields can destroy records on payment cards, hard drives, and other magnetic media. Stay away of at least 10 cm.

Caution! Looking for details? Read our article: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98