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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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Technical parameters - 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 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%
Sustainability
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
Magnet Unit Converter
Force (pull)

Magnetic Field

Other proposals

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. 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. 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. 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.
Standard manual separators (such as SMZR 32x250 / N52) do not have a release mechanism and require manual cleaning. 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.

Pros and cons of Nd2Fe14B magnets.

Strengths

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They retain full power for almost ten years – the loss is just ~1% (in theory),
  • Magnets very well resist against demagnetization caused by foreign field sources,
  • By using a decorative layer of gold, the element presents an elegant look,
  • The surface of neodymium magnets generates a intense magnetic field – this is a key feature,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for functioning at temperatures approaching 230°C and above...
  • Possibility of individual forming and optimizing to precise needs,
  • Versatile presence in high-tech industry – they find application in data components, drive modules, advanced medical instruments, as well as multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which enables their usage in miniature devices

Weaknesses

Characteristics of disadvantages of neodymium magnets and ways of using them
  • They are prone to damage 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
  • Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Limited ability of producing threads in the magnet and complex forms - preferred is casing - magnetic holder.
  • Potential hazard related to microscopic parts of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child health protection. It is also worth noting that small elements of these devices can disrupt the diagnostic process medical when they are in the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Maximum magnetic pulling forcewhat contributes to it?

The load parameter shown represents the maximum value, recorded under ideal test conditions, specifically:
  • using a base made of low-carbon steel, acting as a circuit closing element
  • possessing a thickness of min. 10 mm to avoid saturation
  • with a plane cleaned and smooth
  • without the slightest insulating layer between the magnet and steel
  • during pulling in a direction vertical to the mounting surface
  • in neutral thermal conditions

Magnet lifting force in use – key factors

Effective lifting capacity impacted by specific conditions, such as (from priority):
  • Clearance – existence of foreign body (rust, tape, air) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
  • Plate thickness – too thin sheet causes magnetic saturation, causing part of the flux to be escaped into the air.
  • Steel grade – ideal substrate is pure iron steel. Hardened steels may generate lower lifting capacity.
  • Surface condition – smooth surfaces ensure maximum contact, which increases field saturation. Rough surfaces weaken the grip.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, whereas under parallel forces the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate reduces the lifting capacity.

Warnings
Fragile material

Neodymium magnets are ceramic materials, meaning they are prone to chipping. Clashing of two magnets leads to them shattering into shards.

Power loss in heat

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

Safe operation

Handle with care. Rare earth magnets attract from a distance and snap with massive power, often faster than you can move away.

Crushing force

Watch your fingers. Two powerful magnets will join instantly with a force of massive weight, crushing anything in their path. Be careful!

Compass and GPS

GPS units and smartphones are highly susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Threat to electronics

Device Safety: Strong magnets can damage data carriers and sensitive devices (heart implants, hearing aids, timepieces).

Dust is flammable

Drilling and cutting of neodymium magnets poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Health Danger

For implant holders: Powerful magnets affect electronics. Keep minimum 30 cm distance or ask another person to work with the magnets.

Skin irritation risks

Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If an allergic reaction appears, cease handling magnets and use protective gear.

Swallowing risk

Adult use only. Tiny parts pose a choking risk, leading to intestinal necrosis. Keep out of reach of children and animals.

Danger! Want to know more? Check our post: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98