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SM 32x400 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130463

GTIN/EAN: 5906301813347

Diameter Ø

32 mm [±1 mm]

Height

400 mm [±1 mm]

Weight

2215 g

Magnetic Flux

~ 10 000 Gauss [±5%]

1266.90 with VAT / pcs + price for transport

1030.00 ZŁ net + 23% VAT / pcs

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1140.21 ZŁ
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Force along with structure of a neodymium magnet can be calculated using our online calculation tool.

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Product card - SM 32x400 [2xM8] / N52 - magnetic separator

Specification / characteristics - SM 32x400 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130463
GTIN/EAN 5906301813347
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 400 mm [±1 mm]
Weight 2215 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 15 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x400 [2xM8] / N52 - magnetic separator
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
SM 32x400 [2xM8] / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 400 mm (L)
Active length 364 mm
Section count 15 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~2445 g
Active area 366 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 (15 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: 130463-2026
Magnet Unit Converter
Force (pull)

Magnetic Field

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A magnetic rod is the basic element of building grate separators and magnetic filters. Its task is separation (separation) of metal filings from the transported material. Thanks to the use of strong neodymium magnets, the rod catches even metallic dust.
The construction relies on a sealed, welded stainless steel housing, polished smooth. The core is a precise magnetic system generating high induction (Gauss). Such construction ensures full resistance to corrosion, water, oils, and acids.
Metal filings stick to the surface very strongly, so cleaning requires strength or cleverness. We recommend sticking packing tape to the cluster of filings and tearing it off together with the contaminants. For easier operation, it is worth considering ordering a rod in a version with a cleaning sleeve.
The more Gauss, the smaller and more weakly magnetic particles will be effectively caught. Standard rods (~8000 Gs) are sufficient for catching screws, nails, and steel shavings. For the food and precision industry, we recommend the highest induction parameters.
We can produce a rod of non-standard length with any mounting termination. The rod end is strictly adapted to the fastening system in your device. Contact us for a quote on a non-standard dimension.

Advantages as well as disadvantages of neodymium magnets.

Advantages

In addition to their long-term stability, neodymium magnets provide the following advantages:
  • They do not lose power, even during nearly ten years – the drop in strength is only ~1% (according to tests),
  • Neodymium magnets remain remarkably resistant to demagnetization caused by external magnetic fields,
  • In other words, due to the smooth layer of silver, the element gains a professional look,
  • Magnets are characterized by very high magnetic induction on the surface,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
  • Considering the potential of precise molding and adaptation to custom requirements, NdFeB magnets can be manufactured in a broad palette of shapes and sizes, which amplifies use scope,
  • Huge importance in future technologies – they are commonly used in magnetic memories, electric motors, precision medical tools, and multitasking production systems.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Weaknesses

Disadvantages of NdFeB magnets:
  • To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
  • When exposed to high temperature, neodymium magnets experience a drop in force. 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
  • They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • We recommend cover - magnetic mount, due to difficulties in creating threads inside the magnet and complicated forms.
  • Possible danger related to microscopic parts of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child health protection. Additionally, small elements of these devices can disrupt the diagnostic process medical after entering the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Magnetic strength at its maximum – what affects it?

The specified lifting capacity concerns the limit force, obtained under ideal test conditions, meaning:
  • on a base made of structural steel, optimally conducting the magnetic field
  • possessing a thickness of at least 10 mm to ensure full flux closure
  • with a surface perfectly flat
  • with direct contact (no paint)
  • under axial application of breakaway force (90-degree angle)
  • at temperature approx. 20 degrees Celsius

Determinants of lifting force in real conditions

Holding efficiency is affected by specific conditions, such as (from priority):
  • Distance – existence of any layer (paint, tape, gap) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
  • Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
  • Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
  • Material type – ideal substrate is pure iron steel. Hardened steels may generate lower lifting capacity.
  • Surface quality – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Thermal environment – temperature increase results in weakening of induction. Check the maximum operating temperature for a given model.

Lifting capacity was determined with the use of a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under attempts to slide the magnet the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate reduces the load capacity.

Safe handling of NdFeB magnets
Permanent damage

Standard neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.

Magnetic media

Intense magnetic fields can destroy records on credit cards, hard drives, and storage devices. Maintain a gap of at least 10 cm.

Swallowing risk

Always keep magnets out of reach of children. Risk of swallowing is significant, and the consequences of magnets connecting inside the body are very dangerous.

Sensitization to coating

It is widely known that the nickel plating (standard magnet coating) is a potent allergen. If your skin reacts to metals, refrain from direct skin contact and choose encased magnets.

Pacemakers

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

Mechanical processing

Powder created during machining of magnets is self-igniting. Avoid drilling into magnets without proper cooling and knowledge.

Do not underestimate power

Handle magnets consciously. Their huge power can surprise even professionals. Be vigilant and respect their power.

Shattering risk

Neodymium magnets are sintered ceramics, which means they are prone to chipping. Clashing of two magnets leads to them breaking into shards.

Crushing risk

Big blocks can crush fingers instantly. Never put your hand betwixt two strong magnets.

Threat to navigation

A powerful magnetic field negatively affects the functioning of magnetometers in smartphones and GPS navigation. Maintain magnets close to a smartphone to avoid damaging the sensors.

Attention! Need more info? Check our post: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98