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SM 32x200 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130298

GTIN/EAN: 5906301812913

Diameter Ø

32 mm [±1 mm]

Height

200 mm [±1 mm]

Weight

1070 g

Magnetic Flux

~ 8 000 Gauss [±5%]

602.70 with VAT / pcs + price for transport

490.00 ZŁ net + 23% VAT / pcs

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Specifications and appearance of magnetic components can be tested with our power calculator.

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Technical data of the product - SM 32x200 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 32x200 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130298
GTIN/EAN 5906301812913
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 200 mm [±1 mm]
Weight 1070 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 7 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 32x200 [2xM8] / N42 - magnetic separator
properties values units
remenance Br [min. - max.] ? 12.9-13.2 kGs
remenance Br [min. - max.] ? 1290-1320 mT
coercivity bHc ? 10.8-12.0 kOe
coercivity bHc ? 860-955 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 40-42 BH max MGOe
energy density [min. - max.] ? 318-334 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 32x200 [2xM8] / N42

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 200 mm (L)
Active length 164 mm
Section count 7 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~1222 g
Active area 165 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) 26.2 kg (theor.)
Induction (surface) ~8 000 Gauss (Max)

Chart 2: Field profile (7 sections)

Chart 3: Temperature performance

Technical and environmental data
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%
Environmental data
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: 130298-2026
Measurement Calculator
Pulling force

Field Strength

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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 rod consists of a cover tube made of high-quality acid-resistant steel (AISI 304 or 316). 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.
Metal contaminants are strongly attracted, so removing them with a bare hand or glove can be difficult. The most effective home method is using adhesive tape, which we wrap around the dirt and peel off. In industry, cover tubes (so-called Easy Clean system) are used, from which the magnetic insert slides out.
Magnetic induction measured in Gauss (Gs) determines the density of magnetic flux on the rod surface. The economical version (8kGs) handles large pieces of metal perfectly. High induction is necessary when contaminants are microscopic or weakly magnetic.
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 neodymium magnets.

Benefits

Besides their exceptional magnetic power, neodymium magnets offer the following advantages:
  • Their power is durable, and after approximately 10 years it drops only by ~1% (according to research),
  • Neodymium magnets are highly resistant to demagnetization caused by magnetic disturbances,
  • Thanks to the shiny finish, the surface of nickel, gold, or silver gives an professional appearance,
  • Magnetic induction on the top side of the magnet remains exceptional,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to modularity in designing and the ability to modify to individual projects,
  • Key role in modern technologies – they are used in computer drives, electric motors, medical devices, also multitasking production systems.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Limitations

Disadvantages of NdFeB magnets:
  • At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in producing threads and complex shapes in magnets, we recommend using casing - magnetic mechanism.
  • Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. Furthermore, small components of these products can disrupt the diagnostic process medical after entering the body.
  • Due to neodymium price, their price exceeds standard values,

Pull force analysis

Optimal lifting capacity of a neodymium magnetwhat affects it?

Magnet power is the result of a measurement for optimal configuration, assuming:
  • with the use of a yoke made of special test steel, guaranteeing maximum field concentration
  • possessing a massiveness of at least 10 mm to ensure full flux closure
  • characterized by smoothness
  • under conditions of gap-free contact (surface-to-surface)
  • under perpendicular application of breakaway force (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Lifting capacity in practice – influencing factors

Effective lifting capacity is influenced by specific conditions, such as (from most important):
  • Distance – existence of foreign body (rust, dirt, gap) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
  • Direction of force – maximum parameter is available only during perpendicular pulling. The force required to slide of the magnet along the surface is typically many times smaller (approx. 1/5 of the lifting capacity).
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Steel type – low-carbon steel attracts best. Alloy admixtures reduce magnetic permeability and lifting capacity.
  • Surface condition – ground elements ensure maximum contact, which improves field saturation. Rough surfaces weaken the grip.
  • Operating temperature – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the holding force is lower. Moreover, even a slight gap between the magnet and the plate decreases the holding force.

H&S for magnets
Sensitization to coating

It is widely known that nickel (the usual finish) is a potent allergen. For allergy sufferers, prevent direct skin contact and select coated magnets.

Keep away from computers

Avoid bringing magnets near a purse, computer, or screen. The magnetic field can irreversibly ruin these devices and wipe information from cards.

Serious injuries

Risk of injury: The attraction force is so immense that it can result in hematomas, pinching, and broken bones. Protective gloves are recommended.

ICD Warning

People with a ICD must keep an absolute distance from magnets. The magnetism can interfere with the operation of the implant.

Dust is flammable

Powder produced during machining of magnets is flammable. Do not drill into magnets unless you are an expert.

Danger to the youngest

These products are not intended for children. Swallowing multiple magnets may result in them pinching intestinal walls, which constitutes a direct threat to life and necessitates urgent medical intervention.

Compass and GPS

A strong magnetic field interferes with the operation of magnetometers in smartphones and GPS navigation. Do not bring magnets near a smartphone to avoid breaking the sensors.

Demagnetization risk

Standard neodymium magnets (grade N) lose magnetization when the temperature exceeds 80°C. Damage is permanent.

Fragile material

Neodymium magnets are ceramic materials, which means they are fragile like glass. Collision of two magnets leads to them breaking into small pieces.

Handling rules

Use magnets consciously. Their immense force can surprise even professionals. Be vigilant and do not underestimate their power.

Warning! More info about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98