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SMZR 32x125 / N52 - magnetic separator with handle

magnetic separator with handle

Catalog no 140238

GTIN/EAN: 5906301813460

5.00

Diameter Ø

32 mm [±1 mm]

Height

125 mm [±1 mm]

Weight

690 g

Magnetic Flux

~ 10 000 Gauss [±5%]

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430.50 ZŁ with VAT / pcs + price for transport

350.00 ZŁ net + 23% VAT / pcs

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Physical properties - SMZR 32x125 / N52 - magnetic separator with handle

Specification / characteristics - SMZR 32x125 / N52 - magnetic separator with handle

properties
properties values
Cat. no. 140238
GTIN/EAN 5906301813460
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 32 mm [±1 mm]
Height 125 mm [±1 mm]
Weight 690 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 4 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SMZR 32x125 / 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 32x125 / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 125 mm (L)
Active length 105 mm
Section count 4 modules
Dead zone 20 mm (Blaszka 2mm + Gwint 18mm)
Weight (est.) ~764 g
Active area 106 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) 41 kg (theor.)
Induction (surface) ~10 000 Gauss (Max)
Max T = 80°C. Construction data for M8/M10 thread series.

Chart 2: Field profile (4 sections)

Simulation: 4 magnetic modules (pitch 23 mm).

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: 140238-2026
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It is an essential at every scrap yard, waste sorting plant, and workshop. It enables effective segregation of materials in the yard and accepting goods. It is also useful for pulling small steel elements from crates, ash, sand, or sawdust.
A neodymium magnet attracts only ferromagnetic metals, such as ordinary steel (black) and cast iron. This is the simplest and fastest test to distinguish valuable non-ferrous metals from cheap steel.
Neodymiums are more compact and effective during all-day work at a scrap yard. Strong neodymium field detects even weakly magnetic alloys and contaminants. This is a modern solution displacing heavy and weak ferrite magnets.
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.
In this model, collected metal must be torn off manually (preferably in a work glove). Models with a release lever (so-called grippers with a dropper) are also available in another category. The sliding technique is more effective and requires less force than perpendicular tearing.

Advantages and disadvantages of Nd2Fe14B magnets.

Pros

Apart from their notable magnetism, neodymium magnets have these key benefits:
  • They do not lose power, even during around 10 years – the decrease in lifting capacity is only ~1% (theoretically),
  • They possess excellent resistance to weakening of magnetic properties as a result of external fields,
  • By using a reflective coating of gold, the element has an nice look,
  • Magnets possess extremely high magnetic induction on the working surface,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Possibility of detailed forming and modifying to defined conditions,
  • Key role in future technologies – they are utilized in mass storage devices, electric drive systems, medical equipment, also multitasking production systems.
  • Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Weaknesses

Cons of neodymium magnets: application proposals
  • They are fragile 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
  • When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as 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. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
  • We recommend cover - magnetic holder, due to difficulties in producing nuts inside the magnet and complex forms.
  • Health risk related to microscopic parts of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child health protection. Furthermore, small elements of these devices are able to be problematic in diagnostics medical after entering the body.
  • Due to complex production process, their price is relatively high,

Holding force characteristics

Detachment force of the magnet in optimal conditions – what contributes to it?

The load parameter shown refers to the limit force, obtained under laboratory conditions, specifically:
  • using a sheet made of high-permeability steel, acting as a magnetic yoke
  • possessing a thickness of minimum 10 mm to ensure full flux closure
  • with a plane cleaned and smooth
  • without any air gap between the magnet and steel
  • during detachment in a direction perpendicular to the plane
  • at temperature approx. 20 degrees Celsius

Practical aspects of lifting capacity – factors

In practice, the actual lifting capacity depends on a number of factors, presented from crucial:
  • Air gap (betwixt the magnet and the plate), as even a tiny clearance (e.g. 0.5 mm) leads to a reduction in force by up to 50% (this also applies to paint, rust or dirt).
  • Load vector – maximum parameter is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is usually several times lower (approx. 1/5 of the lifting capacity).
  • Base massiveness – too thin sheet does not close the flux, causing part of the power to be escaped to the other side.
  • Material composition – different alloys reacts the same. Alloy additives worsen the attraction effect.
  • Surface quality – the smoother and more polished the plate, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
  • Thermal factor – hot environment weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, however under shearing force the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate reduces the load capacity.

Warnings
Danger to pacemakers

People with a ICD have to keep an absolute distance from magnets. The magnetism can stop the operation of the life-saving device.

Fire risk

Combustion risk: Rare earth powder is highly flammable. Avoid machining magnets without safety gear as this may cause fire.

Threat to electronics

Intense magnetic fields can destroy records on credit cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.

Eye protection

Beware of splinters. Magnets can fracture upon violent connection, launching sharp fragments into the air. Wear goggles.

Permanent damage

Watch the temperature. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and strength.

Precision electronics

GPS units and mobile phones are extremely susceptible to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Safe operation

Exercise caution. Rare earth magnets act from a distance and connect with massive power, often faster than you can react.

Keep away from children

NdFeB magnets are not toys. Swallowing a few magnets can lead to them pinching intestinal walls, which poses a severe health hazard and requires urgent medical intervention.

Metal Allergy

It is widely known that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, refrain from direct skin contact and choose versions in plastic housing.

Hand protection

Protect your hands. Two powerful magnets will join immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!

Important! Want to know more? Check our post: Are neodymium magnets dangerous?