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SM 32x225 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130361

GTIN/EAN: 5906301813095

Diameter Ø

32 mm [±1 mm]

Height

225 mm [±1 mm]

Weight

1205 g

Magnetic Flux

~ 10 000 Gauss [±5%]

676.50 with VAT / pcs + price for transport

550.00 ZŁ net + 23% VAT / pcs

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Detailed specification - SM 32x225 [2xM8] / N52 - magnetic separator

Specification / characteristics - SM 32x225 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130361
GTIN/EAN 5906301813095
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 225 mm [±1 mm]
Weight 1205 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 8 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x225 [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 32x225 [2xM8] / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 225 mm (L)
Active length 189 mm
Section count 8 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~1375 g
Active area 190 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 (8 sections)

Chart 3: Temperature performance

Technical and environmental data
Material specification
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: 130361-2026
Measurement Calculator
Force (pull)

Magnetic Field

See also products

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. 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). The core is a precise magnetic system generating high induction (Gauss). 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. 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 more Gauss, the smaller and more weakly magnetic particles will be effectively caught. The economical version (8kGs) handles large pieces of metal perfectly. For the food and precision industry, we recommend the highest induction parameters.
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.

Advantages as well as disadvantages of rare earth magnets.

Advantages

Besides their immense pulling force, neodymium magnets offer the following advantages:
  • They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (based on calculations),
  • They are noted for resistance to demagnetization induced by external magnetic fields,
  • Thanks to the smooth finish, the coating of Ni-Cu-Ni, gold-plated, or silver gives an aesthetic appearance,
  • Neodymium magnets generate maximum magnetic induction on a small area, which allows for strong attraction,
  • 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...
  • In view of the option of free shaping and customization to specialized needs, magnetic components can be created in a wide range of shapes and sizes, which amplifies use scope,
  • Key role in electronics industry – they are used in data components, motor assemblies, diagnostic systems, also other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which allows their use in miniature devices

Limitations

Disadvantages of NdFeB magnets:
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • They oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in creating threads and complex shapes in magnets, we propose using cover - magnetic mount.
  • Possible danger to health – tiny shards of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. Additionally, small components of these products can complicate diagnosis medical after entering the body.
  • Due to neodymium price, their price is higher than average,

Holding force characteristics

Detachment force of the magnet in optimal conditionswhat contributes to it?

The lifting capacity listed is a measurement result performed under the following configuration:
  • with the use of a sheet made of special test steel, guaranteeing full magnetic saturation
  • with a thickness minimum 10 mm
  • with an polished contact surface
  • with total lack of distance (without coatings)
  • for force acting at a right angle (pull-off, not shear)
  • in temp. approx. 20°C

What influences lifting capacity in practice

Bear in mind that the magnet holding will differ influenced by elements below, starting with the most relevant:
  • Gap (between the magnet and the metal), because even a microscopic clearance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to paint, corrosion or debris).
  • Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
  • Steel grade – the best choice is pure iron steel. Cast iron may attract less.
  • Surface condition – smooth surfaces guarantee perfect abutment, which increases field saturation. Rough surfaces weaken the grip.
  • Operating temperature – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity testing was performed on a smooth plate of suitable thickness, under perpendicular forces, in contrast under shearing force the lifting capacity is smaller. Moreover, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.

Warnings
Finger safety

Risk of injury: The attraction force is so great that it can result in blood blisters, crushing, and broken bones. Protective gloves are recommended.

Demagnetization risk

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

Flammability

Combustion risk: Neodymium dust is explosive. Do not process magnets without safety gear as this risks ignition.

Beware of splinters

Watch out for shards. Magnets can explode upon violent connection, launching shards into the air. We recommend safety glasses.

Phone sensors

Note: neodymium magnets produce a field that disrupts precision electronics. Keep a separation from your phone, tablet, and navigation systems.

Safe distance

Do not bring magnets near a wallet, computer, or screen. The magnetism can permanently damage these devices and wipe information from cards.

Handling rules

Before starting, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.

This is not a toy

Product intended for adults. Tiny parts can be swallowed, leading to severe trauma. Store out of reach of kids and pets.

Sensitization to coating

It is widely known that the nickel plating (standard magnet coating) is a strong allergen. If you have an allergy, avoid touching magnets with bare hands or opt for versions in plastic housing.

Danger to pacemakers

Patients with a heart stimulator must maintain an absolute distance from magnets. The magnetism can disrupt the operation of the life-saving device.

Caution! 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