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SM 32x375 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130462

GTIN/EAN: 5906301813330

5.00
Diameter Ø
32 mm [±1 mm]
Height
375 mm [±1 mm]
Weight
2075 g
Magnetic Flux
~ 10 000 Gauss [±5%]

How we measure these parameters — certificates and measurements

view technical data »

1070.00 zł net / pcs

1316.10 zł with VAT (23% VAT) / pcs

price for transport

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1184.49 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 32x375 [2xM8] / N52 - magnetic separator

Specification / characteristics - SM 32x375 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130462
GTIN/EAN 5906301813330
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 375 mm [±1 mm]
Weight 2075 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 14 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x375 [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 32x375 [2xM8] / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 375 mm (L)
Active length 339 mm
Section count 14 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~2292 g
Active area 341 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 (14 sections)

Simulation: 14 magnetic modules (pitch 23 mm).

Chart 3: Temperature performance

Technical and environmental data

Material specification

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: 130462-2026
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This product serves to effectively catch ferromagnetic contaminants from bulk and liquid products. Its task is separation (separation) of metal filings from the transported material. High magnetic induction on the surface allows catching the finest iron particles.
The outer layer is hygienic acid-resistant steel, approved for food contact. Inside there is a stack of strong neodymium magnets arranged in a special configuration (magnetic circuit). Thanks to this, the rod is durable, hygienic, and easy to keep clean.
Metal filings stick to the surface very strongly, so cleaning requires strength or cleverness. You can use compressed air or special non-magnetic strippers (rings). For easier operation, it is worth considering ordering a rod in a version with a cleaning sleeve.
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. We ensure fast realization of special orders and technical advice.

Advantages as well as disadvantages of rare earth magnets.

Advantages

Apart from their consistent power, neodymium magnets have these key benefits:
  • They have stable power, and over around 10 years their performance decreases symbolically – ~1% (in testing),
  • They are extremely resistant to demagnetization induced by external field influence,
  • A magnet with a shiny nickel surface looks better,
  • Neodymium magnets ensure maximum magnetic induction on a small surface, which ensures high operational effectiveness,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the form) even at a temperature of 230°C or more...
  • Thanks to freedom in constructing and the capacity to adapt to client solutions,
  • Significant place in advanced technology sectors – they are used in computer drives, motor assemblies, advanced medical instruments, as well as technologically advanced constructions.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Drawbacks and weaknesses 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 using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
  • Neodymium magnets lose their strength 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
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
  • We recommend cover - magnetic mechanism, due to difficulties in producing nuts inside the magnet and complicated forms.
  • Health risk resulting from small fragments of magnets can be dangerous, if swallowed, which becomes key in the context of child health protection. Additionally, tiny parts of these products are able to be problematic in diagnostics medical in case of swallowing.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

Detachment force of the magnet in optimal conditions – what it depends on?

Information about lifting capacity was defined for ideal contact conditions, taking into account:
  • using a base made of high-permeability steel, acting as a ideal flux conductor
  • with a thickness no less than 10 mm
  • with an ground touching surface
  • under conditions of gap-free contact (metal-to-metal)
  • for force applied at a right angle (in the magnet axis)
  • in neutral thermal conditions

Practical aspects of lifting capacity – factors

Please note that the working load will differ subject to elements below, starting with the most relevant:
  • Gap between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
  • Loading method – catalog parameter refers to detachment vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
  • Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Material type – ideal substrate is high-permeability steel. Hardened steels may generate lower lifting capacity.
  • Smoothness – ideal contact is possible only on smooth steel. Rough texture create air cushions, reducing force.
  • Thermal environment – temperature increase results in weakening of force. Check the thermal limit for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under shearing force the lifting capacity is smaller. Additionally, even a small distance between the magnet and the plate lowers the lifting capacity.

Warnings
Compass and GPS

A strong magnetic field negatively affects the operation of compasses in smartphones and navigation systems. Do not bring magnets near a smartphone to prevent damaging the sensors.

Health Danger

Life threat: Neodymium magnets can turn off heart devices and defibrillators. Stay away if you have medical devices.

Electronic hazard

Do not bring magnets near a purse, computer, or screen. The magnetic field can permanently damage these devices and wipe information from cards.

Adults only

Product intended for adults. Tiny parts pose a choking risk, leading to intestinal necrosis. Keep away from children and animals.

Skin irritation risks

It is widely known that nickel (standard magnet coating) is a strong allergen. If your skin reacts to metals, prevent direct skin contact or select encased magnets.

Dust is flammable

Drilling and cutting of neodymium magnets carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Serious injuries

Danger of trauma: The pulling power is so great that it can result in hematomas, pinching, and broken bones. Protective gloves are recommended.

Power loss in heat

Do not overheat. NdFeB magnets are susceptible to temperature. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).

Eye protection

Protect your eyes. Magnets can fracture upon uncontrolled impact, launching shards into the air. Wear goggles.

Immense force

Handle magnets with awareness. Their powerful strength can shock even professionals. Be vigilant and do not underestimate their force.

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