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SM 32x475 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130466

GTIN/EAN: 5906301813378

Diameter Ø

32 mm [±1 mm]

Height

475 mm [±1 mm]

Weight

2630 g

Magnetic Flux

~ 10 000 Gauss [±5%]

1488.30 with VAT / pcs + price for transport

1210.00 ZŁ net + 23% VAT / pcs

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Physical properties - SM 32x475 [2xM8] / N52 - magnetic separator

Specification / characteristics - SM 32x475 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130466
GTIN/EAN 5906301813378
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 475 mm [±1 mm]
Weight 2630 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 18 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x475 [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 32x475 [2xM8] / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 475 mm (L)
Active length 439 mm
Section count 19 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~2903 g
Active area 441 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 (19 sections)

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: 130466-2025
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Pulling force

Magnetic Induction

Other deals

It is the "heart" of every magnetic filter used in industry for cleaning raw materials. 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. 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. 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. The economical version (8kGs) handles large pieces of metal perfectly. High Power versions (~12000-14000 Gs) are necessary for catching metallic dust, oxides, and stainless steel after processing.
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.

Pros as well as cons of rare earth magnets.

Strengths

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • They have constant strength, and over more than ten years their attraction force decreases symbolically – ~1% (according to theory),
  • Magnets effectively defend themselves against loss of magnetization caused by ambient magnetic noise,
  • Thanks to the shimmering finish, the plating of Ni-Cu-Ni, gold-plated, or silver gives an clean appearance,
  • The surface of neodymium magnets generates a strong magnetic field – this is a distinguishing feature,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to the option of flexible molding and customization to specialized needs, NdFeB magnets can be modeled in a wide range of shapes and sizes, which makes them more universal,
  • Key role in modern industrial fields – they are used in magnetic memories, electric motors, diagnostic systems, as well as complex engineering applications.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Cons

What to avoid - cons of neodymium magnets: weaknesses and usage proposals
  • At strong impacts they can crack, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
  • We recommend cover - magnetic holder, due to difficulties in producing threads inside the magnet and complex forms.
  • Health risk related to microscopic parts of magnets can be dangerous, in case of ingestion, which becomes key in the aspect of protecting the youngest. It is also worth noting that small elements of these devices are able to disrupt the diagnostic process medical when they are in the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Lifting parameters

Highest magnetic holding forcewhat it depends on?

The force parameter is a result of laboratory testing executed under the following configuration:
  • using a sheet made of low-carbon steel, acting as a circuit closing element
  • possessing a massiveness of min. 10 mm to ensure full flux closure
  • with a surface cleaned and smooth
  • with zero gap (no coatings)
  • for force acting at a right angle (in the magnet axis)
  • at room temperature

Lifting capacity in practice – influencing factors

During everyday use, the real power results from a number of factors, presented from crucial:
  • Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits much less (typically approx. 20-30% of nominal force).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Steel grade – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
  • Plate texture – smooth surfaces ensure maximum contact, which increases field saturation. Uneven metal weaken the grip.
  • Thermal environment – temperature increase results in weakening of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity was determined with the use of a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet and the plate reduces the lifting capacity.

H&S for magnets
Immense force

Before use, read the rules. Sudden snapping can destroy the magnet or injure your hand. Be predictive.

Swallowing risk

Neodymium magnets are not intended for children. Eating multiple magnets may result in them connecting inside the digestive tract, which constitutes a direct threat to life and requires immediate surgery.

Threat to electronics

Avoid bringing magnets near a wallet, laptop, or TV. The magnetism can permanently damage these devices and wipe information from cards.

Finger safety

Big blocks can smash fingers in a fraction of a second. Under no circumstances put your hand betwixt two attracting surfaces.

Thermal limits

Do not overheat. Neodymium magnets are susceptible to temperature. If you need resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

GPS and phone interference

A powerful magnetic field negatively affects the operation of compasses in smartphones and navigation systems. Maintain magnets close to a smartphone to prevent damaging the sensors.

Magnets are brittle

Watch out for shards. Magnets can explode upon uncontrolled impact, launching shards into the air. Wear goggles.

Danger to pacemakers

Patients with a ICD should keep an safe separation from magnets. The magnetism can stop the functioning of the life-saving device.

Machining danger

Dust produced during machining of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.

Avoid contact if allergic

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If an allergic reaction appears, immediately stop working with magnets and use protective gear.

Caution! Learn more 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