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SM 32x425 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130464

GTIN/EAN: 5906301813354

Diameter Ø

32 mm [±1 mm]

Height

425 mm [±1 mm]

Weight

2353 g

Magnetic Flux

~ 10 000 Gauss [±5%]

1340.70 with VAT / pcs + price for transport

1090.00 ZŁ net + 23% VAT / pcs

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Parameters as well as shape of neodymium magnets can be estimated using our modular calculator.

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Technical data - SM 32x425 [2xM8] / N52 - magnetic separator

Specification / characteristics - SM 32x425 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130464
GTIN/EAN 5906301813354
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 425 mm [±1 mm]
Weight 2353 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 16 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x425 [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 32x425 [2xM8] / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 425 mm (L)
Active length 389 mm
Section count 16 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~2598 g
Active area 391 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 (16 sections)

Chart 3: Temperature performance

Technical specification and ecology
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: 130464-2026
Magnet Unit Converter
Pulling force

Magnetic Induction

View also proposals

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 rod consists of a cover tube made of high-quality acid-resistant steel (AISI 304 or 316). 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.
Due to the high power of the magnet, direct removal of filings can be troublesome and time-consuming. 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. 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. 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 neodymium magnets.

Strengths

Apart from their notable magnetism, neodymium magnets have these key benefits:
  • They virtually do not lose power, because even after 10 years the performance loss is only ~1% (in laboratory conditions),
  • Magnets very well protect themselves against loss of magnetization caused by external fields,
  • By using a decorative layer of silver, the element acquires an aesthetic look,
  • Neodymium magnets create maximum magnetic induction on a their surface, which increases force concentration,
  • 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...
  • Possibility of precise forming as well as optimizing to precise requirements,
  • Wide application in modern industrial fields – they are commonly used in HDD drives, drive modules, diagnostic systems, as well as other advanced devices.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

What to avoid - cons of neodymium magnets: tips and applications.
  • To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • When exposed to high temperature, neodymium magnets experience a drop in force. 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 suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • Due to limitations in producing threads and complex forms in magnets, we recommend using casing - magnetic holder.
  • Possible danger related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the context of child safety. It is also worth noting that small components of these products are able to be problematic in diagnostics medical after entering the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Optimal lifting capacity of a neodymium magnetwhat affects it?

Magnet power is the result of a measurement for the most favorable conditions, assuming:
  • using a base made of high-permeability steel, acting as a circuit closing element
  • with a cross-section of at least 10 mm
  • characterized by smoothness
  • under conditions of no distance (metal-to-metal)
  • under axial force direction (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Determinants of practical lifting force of a magnet

In real-world applications, the actual lifting capacity results from a number of factors, listed from the most important:
  • Gap (betwixt the magnet and the plate), since even a microscopic distance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to paint, rust or dirt).
  • Force direction – catalog parameter refers to pulling vertically. When slipping, the magnet exhibits much less (typically approx. 20-30% of maximum force).
  • Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
  • Metal type – not every steel attracts identically. Alloy additives worsen the interaction with the magnet.
  • Surface structure – the smoother and more polished the plate, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
  • Temperature influence – hot environment weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, whereas under shearing force the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.

Safe handling of neodymium magnets
Dust explosion hazard

Dust created during machining of magnets is self-igniting. Do not drill into magnets unless you are an expert.

Protective goggles

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

Conscious usage

Handle magnets consciously. Their huge power can shock even experienced users. Plan your moves and respect their force.

Safe distance

Do not bring magnets close to a wallet, computer, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.

Life threat

Health Alert: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Serious injuries

Large magnets can crush fingers in a fraction of a second. Do not put your hand between two strong magnets.

Operating temperature

Monitor thermal conditions. Heating the magnet to high heat will permanently weaken its magnetic structure and strength.

Impact on smartphones

An intense magnetic field disrupts the operation of magnetometers in smartphones and navigation systems. Maintain magnets near a smartphone to avoid damaging the sensors.

Allergic reactions

Some people have a sensitization to Ni, which is the common plating for neodymium magnets. Frequent touching can result in dermatitis. We strongly advise use safety gloves.

Swallowing risk

Neodymium magnets are not suitable for play. Swallowing a few magnets can lead to them connecting inside the digestive tract, which poses a direct threat to life and necessitates urgent medical intervention.

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