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SMZR 32x150 / N52 - magnetic separator with handle

magnetic separator with handle

Catalog no 140239

GTIN/EAN: 5906301813477

5.00
Diameter Ø
32 mm [±1 mm]
Height
150 mm [±1 mm]
Weight
935 g
Magnetic Flux
~ 10 000 Gauss [±5%]
technical parameters »

500.00 zł net / pcs

615.00 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

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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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Product card - SMZR 32x150 / N52 - magnetic separator with handle

Specification / characteristics - SMZR 32x150 / N52 - magnetic separator with handle

properties
properties values
Cat. no. 140239
GTIN/EAN 5906301813477
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 150 mm [±1 mm]
Weight 935 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 5 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SMZR 32x150 / 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 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 32x150 / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 150 mm (L)
Active length 130 mm
Section count 5 modules
Dead zone 20 mm (Blaszka 2mm + Gwint 18mm)
Weight (est.) ~917 g
Active area 131 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 (5 sections)

Simulation: 5 magnetic modules (pitch 23 mm).

Chart 3: Temperature performance

Technical and environmental data

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%

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: 140239-2026
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This gripper serves for instant distinction of steel (iron) from non-ferrous metals. 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.
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. This is a modern solution displacing heavy and weak ferrite magnets.
The construction consists of a hermetic can protecting the magnet and an ergonomic handle. Tool ergonomics are key with frequent use by employees. The tool is durable, drop-resistant, and prepared for hard work.
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. 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 as well as disadvantages of neodymium magnets.

Advantages

Besides their durability, neodymium magnets are valued for these benefits:
  • They do not lose strength, even after around ten years – the drop in strength is only ~1% (theoretically),
  • Magnets very well defend themselves against demagnetization caused by ambient magnetic noise,
  • The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • The surface of neodymium magnets generates a powerful 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...
  • Due to the potential of free forming and customization to specialized needs, magnetic components can be manufactured in a wide range of geometric configurations, which expands the range of possible applications,
  • Huge importance in advanced technology sectors – they are utilized in mass storage devices, drive modules, medical devices, and industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which enables their usage in compact constructions

Cons

Disadvantages of NdFeB magnets:
  • They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power 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
  • They rust in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in realizing nuts and complicated forms in magnets, we recommend using casing - magnetic holder.
  • Potential hazard to health – tiny shards 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 can be problematic in diagnostics medical in case of swallowing.
  • With mass production the cost of neodymium magnets can be a barrier,

Holding force characteristics

Maximum magnetic pulling force – what affects it?

Breakaway force was defined for optimal configuration, assuming:
  • with the use of a yoke made of special test steel, ensuring maximum field concentration
  • possessing a thickness of at least 10 mm to ensure full flux closure
  • characterized by even structure
  • under conditions of no distance (metal-to-metal)
  • under axial force vector (90-degree angle)
  • in temp. approx. 20°C

Practical lifting capacity: influencing factors

Please note that the working load will differ depending on elements below, in order of importance:
  • Gap (between the magnet and the plate), since even a tiny distance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, corrosion or dirt).
  • Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Material type – the best choice is high-permeability steel. Cast iron may attract less.
  • Base smoothness – the more even the plate, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
  • Temperature – temperature increase causes a temporary drop of induction. Check the thermal limit for a given model.

Lifting capacity testing was conducted on a smooth plate of suitable thickness, under a perpendicular pulling force, whereas under parallel forces the holding force is lower. In addition, even a slight gap between the magnet and the plate decreases the load capacity.

Safety rules for work with NdFeB magnets
Fire warning

Fire hazard: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.

Immense force

Handle magnets with awareness. Their huge power can shock even experienced users. Plan your moves and do not underestimate their power.

Warning for heart patients

Warning for patients: Strong magnetic fields disrupt medical devices. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Crushing risk

Large magnets can crush fingers in a fraction of a second. Never put your hand between two attracting surfaces.

Magnetic media

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

Swallowing risk

Always keep magnets away from children. Ingestion danger is significant, and the consequences of magnets connecting inside the body are tragic.

Sensitization to coating

Nickel alert: The nickel-copper-nickel coating consists of nickel. If skin irritation happens, cease working with magnets and use protective gear.

Operating temperature

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

Risk of cracking

NdFeB magnets are sintered ceramics, meaning they are fragile like glass. Clashing of two magnets leads to them shattering into small pieces.

Magnetic interference

GPS units and mobile phones are highly sensitive to magnetic fields. Close proximity with a strong magnet can ruin the internal compass in your phone.

Caution! More info about hazards in the article: Magnet Safety Guide.