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SM 32x125 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130357

GTIN/EAN: 5906301813057

Diameter Ø

32 mm [±1 mm]

Height

125 mm [±1 mm]

Weight

690 g

Magnetic Flux

~ 10 000 Gauss [±5%]

455.10 with VAT / pcs + price for transport

370.00 ZŁ net + 23% VAT / pcs

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Force as well as shape of neodymium magnets can be checked using our magnetic mass calculator.

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Technical of the product - SM 32x125 [2xM8] / N52 - magnetic separator

Specification / characteristics - SM 32x125 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130357
GTIN/EAN 5906301813057
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 125 mm [±1 mm]
Weight 690 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 4 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x125 [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 32x125 [2xM8] / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 125 mm (L)
Active length 89 mm
Section count 3 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~764 g
Active area 89 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 (3 sections)

Chart 3: Temperature performance

Engineering data and GPSR
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%
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: 130357-2026
Measurement Calculator
Pulling force

Magnetic Induction

View also proposals

It is the "heart" of every magnetic filter used in industry for cleaning raw materials. It is commonly used for cleaning flour, sugar, plastic granules, as well as oils and coolants. 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 core is a precise magnetic system generating high induction (Gauss). 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.
Magnetic induction measured in Gauss (Gs) determines the density of magnetic flux on the rod surface. For basic machine protection against pieces of iron, standard power is sufficient. For the food and precision industry, we recommend the highest induction parameters.
Yes, as a manufacturer, we make rods of any length and diameter (standard is dia 25mm and 32mm). The rod end is strictly adapted to the fastening system in your device. Contact us for a quote on a non-standard dimension.

Strengths as well as weaknesses of rare earth magnets.

Pros

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They retain attractive force for around 10 years – the drop is just ~1% (based on simulations),
  • They possess excellent resistance to magnetism drop as a result of external fields,
  • Thanks to the glossy finish, the layer of Ni-Cu-Ni, gold, or silver gives an clean appearance,
  • They show high magnetic induction at the operating surface, which improves attraction properties,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to modularity in constructing and the ability to adapt to client solutions,
  • Significant place in future technologies – they serve a role in data components, electric drive systems, precision medical tools, also multitasking production systems.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

What to avoid - cons of neodymium magnets and proposals for their use:
  • Brittleness is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a strong case, which not only protects them against impacts but also increases their durability
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
  • We recommend casing - magnetic mount, due to difficulties in producing nuts inside the magnet and complex forms.
  • Possible danger related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, small components of these products can be problematic in diagnostics medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Optimal lifting capacity of a neodymium magnetwhat it depends on?

Holding force of 0.00 kg is a theoretical maximum value executed under specific, ideal conditions:
  • using a base made of high-permeability steel, acting as a magnetic yoke
  • whose transverse dimension equals approx. 10 mm
  • with an polished contact surface
  • with total lack of distance (without paint)
  • under perpendicular application of breakaway force (90-degree angle)
  • in stable room temperature

Key elements affecting lifting force

During everyday use, the real power is determined by a number of factors, presented from the most important:
  • Distance (between the magnet and the plate), since even a very small clearance (e.g. 0.5 mm) can cause a decrease in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
  • Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
  • Steel grade – ideal substrate is pure iron steel. Cast iron may attract less.
  • Smoothness – ideal contact is obtained only on polished steel. Rough texture create air cushions, weakening the magnet.
  • Thermal conditions – 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 tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate decreases the holding force.

Safe handling of NdFeB magnets
Keep away from children

Strictly keep magnets away from children. Choking hazard is high, and the consequences of magnets connecting inside the body are tragic.

Precision electronics

Be aware: rare earth magnets produce a field that confuses precision electronics. Keep a separation from your phone, tablet, and navigation systems.

Pacemakers

For implant holders: Strong magnetic fields affect medical devices. Keep at least 30 cm distance or ask another person to handle the magnets.

Safe distance

Very strong magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Stay away of at least 10 cm.

Permanent damage

Keep cool. Neodymium magnets are susceptible to temperature. If you require resistance above 80°C, look for special high-temperature series (H, SH, UH).

Powerful field

Before use, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Think ahead.

Machining danger

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

Magnets are brittle

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Collision of two magnets leads to them shattering into shards.

Physical harm

Protect your hands. Two powerful magnets will snap together immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!

Nickel allergy

Nickel alert: The nickel-copper-nickel coating consists of nickel. If redness occurs, immediately stop handling magnets and use protective gear.

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