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SM 32x500 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130467

GTIN/EAN: 5906301813385

5.00
Diameter Ø
32 mm [±1 mm]
Height
500 mm [±1 mm]
Weight
2770 g
Magnetic Flux
~ 10 000 Gauss [±5%]

How we measure these parameters — certificates and measurements

see parameters »

1270.00 zł net / pcs

1562.10 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

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Quantity
Net
Gross
price from 1 pcs
1270.00 zł
1562.10 zł
price from 5 pcs
1143.00 zł
1405.89 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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Product card - SM 32x500 [2xM8] / N52 - magnetic separator

Specification / characteristics - SM 32x500 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130467
GTIN/EAN 5906301813385
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 500 mm [±1 mm]
Weight 2770 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 19 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x500 [2xM8] / N52 - magnetic separator
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
SM 32x500 [2xM8] / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 500 mm (L)
Active length 464 mm
Section count 20 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~3056 g
Active area 466 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 (20 sections)

Simulation: 20 magnetic modules (pitch 23 mm).

Chart 3: Temperature performance

Engineering data and GPSR

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: 130467-2026
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This product serves to effectively catch ferromagnetic contaminants from bulk and liquid products. It is mounted in chutes, hoppers, and pipelines to protect production machines from failure. Thanks to the use of strong neodymium magnets, the rod catches even metallic dust.
The outer layer is hygienic acid-resistant steel, approved for food contact. The center is filled with NdFeB magnets and pole pieces, arranged to maximize the field on the tube surface. Thanks to this, the rod is durable, hygienic, and easy to keep clean.
Due to the high power of the magnet, direct removal of filings can be troublesome and time-consuming. We recommend sticking packing tape to the cluster of filings and tearing it off together with the contaminants. In industry, cover tubes (so-called Easy Clean system) are used, from which the magnetic insert slides out.
The Gauss value tells us how effectively and deeply the magnet will catch contaminants. For basic machine protection against pieces of iron, standard power is sufficient. 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. You can choose a mounting method consistent with your technical design. Contact us for a quote on a non-standard dimension.

Strengths and weaknesses of rare earth magnets.

Pros

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • Their magnetic field is maintained, and after approximately ten years it decreases only by ~1% (according to research),
  • Magnets perfectly resist against loss of magnetization caused by external fields,
  • Thanks to the reflective finish, the plating of nickel, gold, or silver-plated gives an aesthetic appearance,
  • Magnets exhibit very high magnetic induction on the working surface,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • Thanks to versatility in shaping and the capacity to customize to complex applications,
  • Key role in electronics industry – they are commonly used in data components, drive modules, precision medical tools, and technologically advanced constructions.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Disadvantages

Disadvantages of NdFeB magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can reduce 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 suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
  • We suggest a housing - magnetic holder, due to difficulties in producing threads inside the magnet and complicated shapes.
  • Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which becomes key in the context of child safety. Furthermore, small elements of these magnets can complicate diagnosis medical after entering the body.
  • Due to complex production process, their price exceeds standard values,

Holding force characteristics

Maximum holding power of the magnet – what it depends on?

Breakaway force is the result of a measurement for ideal contact conditions, including:
  • with the use of a yoke made of special test steel, guaranteeing maximum field concentration
  • possessing a massiveness of at least 10 mm to avoid saturation
  • with an ideally smooth contact surface
  • under conditions of no distance (metal-to-metal)
  • under axial force direction (90-degree angle)
  • at temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

Please note that the working load will differ subject to elements below, in order of importance:
  • Distance (between the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
  • Load vector – maximum parameter is reached only during perpendicular pulling. The force required to slide of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
  • Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Chemical composition of the base – low-carbon steel attracts best. Alloy steels lower magnetic permeability and lifting capacity.
  • Surface finish – full contact is obtained only on polished steel. Rough texture create air cushions, reducing force.
  • Thermal environment – temperature increase causes a temporary drop of induction. Check the maximum operating temperature for a given model.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.

Warnings
Magnetic interference

A powerful magnetic field interferes with the functioning of magnetometers in phones and navigation systems. Maintain magnets close to a device to avoid breaking the sensors.

Immense force

Handle magnets with awareness. Their powerful strength can surprise even experienced users. Stay alert and do not underestimate their power.

Permanent damage

Avoid heat. NdFeB magnets are sensitive to heat. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Bone fractures

Pinching hazard: The pulling power is so great that it can cause hematomas, crushing, and broken bones. Protective gloves are recommended.

Do not give to children

These products are not toys. Eating multiple magnets may result in them connecting inside the digestive tract, which constitutes a critical condition and necessitates immediate surgery.

Fire risk

Drilling and cutting of NdFeB material poses a fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Risk of cracking

Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Eye protection is mandatory.

Implant safety

Patients with a ICD should keep an large gap from magnets. The magnetism can disrupt the operation of the implant.

Nickel coating and allergies

A percentage of the population have a sensitization to nickel, which is the common plating for neodymium magnets. Extended handling might lead to skin redness. We strongly advise use safety gloves.

Threat to electronics

Do not bring magnets close to a wallet, laptop, or TV. The magnetic field can irreversibly ruin these devices and wipe information from cards.

Important! Learn more about risks in the article: Magnet Safety Guide.