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SM 32x325 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130378

GTIN/EAN: 5906301813262

Diameter Ø

32 mm [±1 mm]

Height

325 mm [±1 mm]

Weight

1740 g

Magnetic Flux

~ 8 000 Gauss [±5%]

971.70 with VAT / pcs + price for transport

790.00 ZŁ net + 23% VAT / pcs

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Technical specification of the product - SM 32x325 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 32x325 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130378
GTIN/EAN 5906301813262
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 325 mm [±1 mm]
Weight 1740 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 12 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 32x325 [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 32x325 [2xM8] / N42

Parameter Value Description / Unit
Diameter (Ø) 25 mm
Total Length 150 mm (L)
Active Length 114 mm (L - 36mm)
Dead Zone 36 mm (2x 18mm Starter)
Section Count 4 modules (co 23mm)
Configuration Magnets every 23mm + Spacers 2x2mm
Induction (Surface) ~6 500 Gauss
Force (Calculated) 10.6 kg (Theor.)

Chart 2: Magnetic Field Profile

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%
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: 130378-2025
Magnet Unit Converter
Magnet pull force

Magnetic Induction

Other proposals

A magnetic rod is the basic element of building grate separators and magnetic filters. 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. Inside there is a stack of strong neodymium magnets arranged in a special configuration (magnetic circuit). 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. 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. We offer various tip options: threaded holes (e.g., M8, M10), protruding screws, flat pivots, mills, or handles. Contact us for a quote on a non-standard dimension.

Advantages and disadvantages of Nd2Fe14B magnets.

Benefits

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (according to literature),
  • Magnets perfectly defend themselves against loss of magnetization caused by external fields,
  • In other words, due to the reflective finish of nickel, the element is aesthetically pleasing,
  • Neodymium magnets create maximum magnetic induction on a small surface, which ensures high operational effectiveness,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of custom modeling as well as adjusting to defined applications,
  • Key role in future technologies – they are used in hard drives, electric drive systems, diagnostic systems, and industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which makes them useful in compact constructions

Weaknesses

Disadvantages of neodymium magnets:
  • At very strong impacts they can break, therefore we advise placing them in strong housings. 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, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise 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 complex forms.
  • Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small elements of these products can complicate diagnosis medical in case of swallowing.
  • Due to complex production process, their price is higher than average,

Holding force characteristics

Optimal lifting capacity of a neodymium magnetwhat contributes to it?

The specified lifting capacity represents the peak performance, measured under optimal environment, namely:
  • with the use of a sheet made of low-carbon steel, ensuring maximum field concentration
  • whose thickness is min. 10 mm
  • with an polished contact surface
  • with zero gap (no impurities)
  • for force acting at a right angle (in the magnet axis)
  • in temp. approx. 20°C

Practical lifting capacity: influencing factors

During everyday use, the actual lifting capacity depends on many variables, presented from crucial:
  • Gap (between the magnet and the plate), because even a microscopic clearance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
  • Angle of force application – maximum parameter is available only during pulling at a 90° angle. The force required to slide of the magnet along the surface is standardly several times smaller (approx. 1/5 of the lifting capacity).
  • Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Steel type – low-carbon steel gives the best results. Alloy steels lower magnetic properties and lifting capacity.
  • Base smoothness – the more even the plate, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.

Warnings
Dust explosion hazard

Fire warning: Neodymium dust is explosive. Avoid machining magnets without safety gear as this risks ignition.

Permanent damage

Monitor thermal conditions. Exposing the magnet to high heat will permanently weaken its properties and strength.

Keep away from electronics

Navigation devices and smartphones are extremely susceptible to magnetism. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.

Allergic reactions

A percentage of the population have a contact allergy to Ni, which is the common plating for neodymium magnets. Prolonged contact may cause an allergic reaction. We suggest wear protective gloves.

Electronic devices

Avoid bringing magnets near a purse, laptop, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.

Serious injuries

Large magnets can smash fingers instantly. Do not put your hand between two strong magnets.

Material brittleness

Protect your eyes. Magnets can explode upon violent connection, ejecting shards into the air. Wear goggles.

Immense force

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

Health Danger

Warning for patients: Powerful magnets disrupt medical devices. Keep minimum 30 cm distance or ask another person to work with the magnets.

Swallowing risk

Adult use only. Tiny parts can be swallowed, leading to severe trauma. Store away from kids and pets.

Warning! Need more info? Read our article: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98