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SMZR 32x225 / N52 - magnetic separator with handle

magnetic separator with handle

Catalog no 140468

GTIN/EAN: 5906301813521

5.00
Diameter Ø
32 mm [±1 mm]
Height
225 mm [±1 mm]
Weight
1245 g
Magnetic Flux
~ 10 000 Gauss [±5%]

How we measure these parameters — certificates and measurements

view properties »

590.00 zł net / pcs

725.70 zł with VAT (23% VAT) / pcs

price for transport

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725.70 zł
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638.62 zł

Frequently asked questions

Which rod should I choose for fine contamination?
For particles below 0.5 mm — a Ø32 mm rod in grade N52, with surface induction of about 10,000 Gs. A Ø25 rod in grade N42 gives about 6,500 Gs and is chosen for contamination above 1 mm: bolts, washers, pieces of wire.
Which rod pitch should I choose?
The narrow pitch, 40 mm centre to centre, for fine free-flowing fractions — it gives denser coverage of the cross-section. The wide pitch, 50 mm, for granulates and for damp, greasy or sticky materials, where a narrow pitch risks the material bridging above the rods.
Why does efficiency drop after a few weeks of operation?
Almost always because the separator has not been cleaned. The layer of captured particles shields the field, and further particles settle on that layer rather than on the rod surface, where the gradient is far stronger. The magnets themselves do not weaken at that rate.

Guides from the knowledge base

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical data - SMZR 32x225 / N52 - magnetic separator with handle

Specification / characteristics - SMZR 32x225 / N52 - magnetic separator with handle

properties
properties values
Cat. no. 140468
GTIN/EAN 5906301813521
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 225 mm [±1 mm]
Weight 1245 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 7 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SMZR 32x225 / N52 - magnetic separator with handle
properties values units
Remanence Br ? 14.2-14.7 kGs
Remanence Br ? 1420-1470 mT
Coercivity bHc ? 10.8-12.5 kOe
Coercivity bHc ? 860-995 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 48-53 BH max MGOe
Energy product BHmax ? 380-422 BH max KJ/m
Maximum working 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 310 °C
Curie Temperature TF 590 °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 32x225 / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 225 mm (L)
Active length 205 mm
Section count 8 modules
Dead zone 20 mm (Blaszka 2mm + Gwint 18mm)
Weight (est.) ~1375 g
Active area 206 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 (8 sections)

Simulation: 8 magnetic modules (pitch 23 mm).

Chart 3: Temperature performance

Engineering data and GPSR

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%

Environmental data

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: 140468-2026
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It is an essential at every scrap yard, waste sorting plant, and workshop. It allows checking if a given item is ferromagnetic (steel, cast iron) or not (aluminum, copper, stainless steel). 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. The neodymium version is currently the standard in professional scrap yards.
The construction consists of a hermetic can protecting the magnet and an ergonomic handle. The grip was designed so as not to slip in the hand, even in a work glove. 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. Models with a release lever (so-called grippers with a dropper) are also available in another category. 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.

Strengths and weaknesses of neodymium magnets.

Strengths

In addition to their long-term stability, neodymium magnets provide the following advantages:
  • They retain magnetic properties for nearly 10 years – the drop is just ~1% (in theory),
  • They have excellent resistance to weakening of magnetic properties due to opposing magnetic fields,
  • The use of an refined finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • Magnets are characterized by impressive magnetic induction on the surface,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for functioning at temperatures reaching 230°C and above...
  • Thanks to the option of precise forming and adaptation to unique projects, magnetic components can be modeled in a wide range of shapes and sizes, which makes them more universal,
  • Huge importance in innovative solutions – they find application in computer drives, motor assemblies, precision medical tools, as well as other advanced devices.
  • Thanks to their power density, small magnets offer high operating force, with minimal size,

Limitations

Characteristics of disadvantages of neodymium magnets: tips and applications.
  • They are prone to damage upon too strong 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
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 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 stable to moisture, in case of application outdoors
  • Due to limitations in producing nuts and complicated forms in magnets, we recommend using casing - magnetic mechanism.
  • Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Additionally, small elements of these devices can complicate diagnosis medical in case of swallowing.
  • Due to expensive raw materials, their price is higher than average,

Holding force characteristics

Best holding force of the magnet in ideal parameters – what contributes to it?

The load parameter shown refers to the limit force, measured under laboratory conditions, namely:
  • with the use of a sheet made of low-carbon steel, ensuring full magnetic saturation
  • with a cross-section of at least 10 mm
  • with a plane free of scratches
  • without any air gap between the magnet and steel
  • during pulling in a direction vertical to the plane
  • in neutral thermal conditions

What influences lifting capacity in practice

It is worth knowing that the magnet holding may be lower subject to the following factors, in order of importance:
  • Distance – existence of any layer (rust, dirt, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Angle of force application – maximum parameter is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
  • Base massiveness – too thin plate does not accept the full field, causing part of the flux to be wasted into the air.
  • Steel grade – ideal substrate is pure iron steel. Stainless steels may generate lower lifting capacity.
  • Plate texture – smooth surfaces ensure maximum contact, which increases force. Uneven metal reduce efficiency.
  • Thermal environment – heating the magnet results in weakening of force. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity was assessed by applying a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under shearing force the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the load capacity.

Safe handling of neodymium magnets
Thermal limits

Regular neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. The loss of strength is permanent.

Nickel coating and allergies

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If skin irritation occurs, cease working with magnets and use protective gear.

Choking Hazard

These products are not intended for children. Accidental ingestion of a few magnets can lead to them attracting across intestines, which poses a direct threat to life and necessitates urgent medical intervention.

Impact on smartphones

An intense magnetic field disrupts the operation of magnetometers in smartphones and GPS navigation. Keep magnets near a device to prevent breaking the sensors.

Danger to pacemakers

Individuals with a ICD should maintain an absolute distance from magnets. The magnetism can stop the operation of the life-saving device.

Caution required

Handle with care. Neodymium magnets act from a distance and snap with massive power, often quicker than you can react.

Shattering risk

Despite the nickel coating, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Electronic devices

Equipment safety: Strong magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, mechanical watches).

Serious injuries

Big blocks can smash fingers in a fraction of a second. Under no circumstances place your hand between two strong magnets.

Machining danger

Combustion risk: Neodymium dust is explosive. Do not process magnets in home conditions as this risks ignition.

Safety First! Learn more about hazards in the article: Safety of working with magnets.