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SM 32x350 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130301

GTIN/EAN: 5906301812944

5.00

Diameter Ø

32 mm [±1 mm]

Height

350 mm [±1 mm]

Weight

1870 g

Magnetic Flux

~ 8 000 Gauss [±5%]

1045.50 with VAT / pcs + price for transport

850.00 ZŁ net + 23% VAT / pcs

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Detailed specification - SM 32x350 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 32x350 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130301
GTIN/EAN 5906301812944
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 350 mm [±1 mm]
Weight 1870 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 13 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 32x350 [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 32x350 [2xM8] / N42

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 350 mm (L)
Active length 314 mm
Section count 13 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~2139 g
Active area 316 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 (13 sections)

Chart 3: Temperature performance

Technical and environmental data
Chemical composition
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: 130301-2026
Quick Unit Converter
Pulling force

Magnetic Induction

Other products

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 construction relies on a sealed, welded stainless steel housing, polished smooth. 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). 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. Standard rods (~8000 Gs) are sufficient for catching screws, nails, and steel shavings. High Power versions (~12000-14000 Gs) are necessary for catching metallic dust, oxides, and stainless steel after processing.
We fulfill individual orders for bars perfectly matched to your machine or separator. The rod end is strictly adapted to the fastening system in your device. We ensure fast realization of special orders and technical advice.

Strengths and weaknesses of neodymium magnets.

Pros

Besides their immense magnetic power, neodymium magnets offer the following advantages:
  • They do not lose strength, even during around ten years – the drop in strength is only ~1% (theoretically),
  • They maintain their magnetic properties even under external field action,
  • In other words, due to the reflective finish of nickel, the element is aesthetically pleasing,
  • The surface of neodymium magnets generates a powerful magnetic field – this is a distinguishing feature,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Considering the option of flexible molding and customization to specialized solutions, neodymium magnets can be produced in a broad palette of shapes and sizes, which expands the range of possible applications,
  • Wide application in electronics industry – they find application in magnetic memories, electric motors, medical equipment, also technologically advanced constructions.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Problematic aspects of neodymium magnets: weaknesses and usage proposals
  • To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
  • When exposed to high temperature, neodymium magnets suffer 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
  • They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • We suggest casing - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complex shapes.
  • Health risk related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Furthermore, tiny parts of these magnets can be problematic in diagnostics medical in case of swallowing.
  • Due to expensive raw materials, their price is higher than average,

Holding force characteristics

Best holding force of the magnet in ideal parameterswhat it depends on?

Magnet power was determined for optimal configuration, assuming:
  • using a base made of mild steel, acting as a ideal flux conductor
  • possessing a massiveness of min. 10 mm to ensure full flux closure
  • with a surface cleaned and smooth
  • without any insulating layer between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • in temp. approx. 20°C

Practical lifting capacity: influencing factors

Please note that the application force may be lower depending on elements below, starting with the most relevant:
  • Gap (betwixt the magnet and the plate), as even a very small clearance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to varnish, rust or dirt).
  • Load vector – highest force is obtained only during pulling at a 90° angle. 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 – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
  • Steel type – low-carbon steel attracts best. Alloy admixtures decrease magnetic permeability and holding force.
  • Surface finish – ideal contact is possible only on smooth steel. Any scratches and bumps create air cushions, reducing force.
  • Heat – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and in frost 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%. In addition, even a small distance between the magnet and the plate reduces the holding force.

Warnings
Fragile material

Despite metallic appearance, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Handling guide

Use magnets consciously. Their huge power can surprise even experienced users. Stay alert and do not underestimate their force.

Cards and drives

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

Power loss in heat

Monitor thermal conditions. Heating the magnet to high heat will permanently weaken its properties and pulling force.

Avoid contact if allergic

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction happens, immediately stop working with magnets and wear gloves.

Do not drill into magnets

Powder produced during cutting of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Magnetic interference

Note: rare earth magnets produce a field that disrupts sensitive sensors. Maintain a safe distance from your phone, device, and navigation systems.

Life threat

Patients with a pacemaker have to keep an absolute distance from magnets. The magnetism can disrupt the operation of the implant.

Choking Hazard

Adult use only. Small elements pose a choking risk, leading to intestinal necrosis. Store out of reach of children and animals.

Bone fractures

Danger of trauma: The attraction force is so immense that it can cause blood blisters, pinching, and broken bones. Protective gloves are recommended.

Caution! Need more info? Check our post: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98