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SMZR 32x250 / N52 - magnetic separator with handle

magnetic separator with handle

Catalog no 140469

GTIN/EAN: 5906301813538

5.00

Diameter Ø

32 mm [±1 mm]

Height

250 mm [±1 mm]

Weight

1490 g

Magnetic Flux

~ 10 000 Gauss [±5%]

738.00 with VAT / pcs + price for transport

600.00 ZŁ net + 23% VAT / pcs

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Lifting power and form of neodymium magnets can be verified on our our magnetic calculator.

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Physical properties - SMZR 32x250 / N52 - magnetic separator with handle

Specification / characteristics - SMZR 32x250 / N52 - magnetic separator with handle

properties
properties values
Cat. no. 140469
GTIN/EAN 5906301813538
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 250 mm [±1 mm]
Weight 1490 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 8 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SMZR 32x250 / 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 32x250 / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 250 mm (L)
Active length 230 mm
Section count 10 modules
Dead zone 20 mm (Blaszka 2mm + Gwint 18mm)
Weight (est.) ~1528 g
Active area 231 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)

Chart 2: Field profile (10 sections)

Chart 3: Temperature performance

Technical specification and ecology
Elemental analysis
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: 140469-2026
Measurement Calculator
Pulling force

Magnetic Induction

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A manual separator is a basic tool for quick identification and sorting of 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.
A neodymium magnet attracts only ferromagnetic metals, such as ordinary steel (black) and cast iron. Lack of reaction (attraction) means the tested item is made of non-magnetic material.
The neodymium model offers powerful force with low weight, which drastically reduces hand fatigue. Strong neodymium field detects even weakly magnetic alloys and contaminants. This is a modern solution displacing heavy and weak ferrite magnets.
The neodymium magnet is enclosed in a solid, metal housing (steel or brass). Tool ergonomics are key with frequent use by employees. 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. We also offer versions where pulling the handle automatically drops collected material. The sliding technique is more effective and requires less force than perpendicular tearing.

Strengths as well as weaknesses of rare earth magnets.

Strengths

Apart from their strong magnetic energy, neodymium magnets have these key benefits:
  • They retain attractive force for around 10 years – the drop is just ~1% (according to analyses),
  • They feature excellent resistance to weakening of magnetic properties as a result of opposing magnetic fields,
  • In other words, due to the aesthetic layer of gold, the element gains visual value,
  • Magnets exhibit impressive magnetic induction on the outer side,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to flexibility in constructing and the capacity to customize to unusual requirements,
  • Versatile presence in modern industrial fields – they are commonly used in magnetic memories, brushless drives, advanced medical instruments, as well as complex engineering applications.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:
  • To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • We suggest cover - magnetic mount, due to difficulties in creating nuts inside the magnet and complicated forms.
  • Health risk resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child safety. Furthermore, small elements of these magnets are able to be problematic in diagnostics medical after entering the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Holding force characteristics

Maximum holding power of the magnet – what affects it?

Information about lifting capacity was defined for optimal configuration, assuming:
  • using a sheet made of high-permeability steel, acting as a magnetic yoke
  • with a thickness no less than 10 mm
  • characterized by smoothness
  • with direct contact (without coatings)
  • under axial force vector (90-degree angle)
  • at temperature approx. 20 degrees Celsius

Lifting capacity in real conditions – factors

Real force is affected by specific conditions, mainly (from priority):
  • Space between magnet and steel – every millimeter of separation (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
  • Pull-off angle – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
  • Metal type – different alloys attracts identically. High carbon content weaken the attraction effect.
  • Surface structure – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Thermal factor – hot environment reduces pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was assessed using a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a small distance between the magnet’s surface and the plate reduces the holding force.

Safety rules for work with NdFeB magnets
Safe distance

Avoid bringing magnets near a wallet, computer, or screen. The magnetic field can permanently damage these devices and wipe information from cards.

Health Danger

Patients with a ICD have to maintain an absolute distance from magnets. The magnetism can stop the functioning of the implant.

Skin irritation risks

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

Phone sensors

Navigation devices and smartphones are extremely susceptible to magnetism. Close proximity with a strong magnet can permanently damage the internal compass in your phone.

Caution required

Use magnets consciously. Their powerful strength can shock even professionals. Stay alert and respect their force.

Magnets are brittle

Protect your eyes. Magnets can explode upon uncontrolled impact, launching shards into the air. Eye protection is mandatory.

Demagnetization risk

Watch the temperature. Exposing the magnet to high heat will permanently weaken its magnetic structure and pulling force.

Dust is flammable

Combustion risk: Rare earth powder is highly flammable. Avoid machining magnets without safety gear as this risks ignition.

Finger safety

Mind your fingers. Two powerful magnets will join immediately with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Do not give to children

These products are not toys. Accidental ingestion of several magnets may result in them pinching intestinal walls, which poses a critical condition and necessitates immediate surgery.

Security! Details about hazards in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98