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SM 25x150 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130368

GTIN/EAN: 5906301813163

5.00

Diameter Ø

25 mm [±1 mm]

Height

150 mm [±1 mm]

Weight

0.01 g

Magnetic Flux

~ 9 500 Gauss [±5%]

467.40 with VAT / pcs + price for transport

380.00 ZŁ net + 23% VAT / pcs

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Technical specification of the product - SM 25x150 [2xM8] / N52 - magnetic separator

Specification / characteristics - SM 25x150 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130368
GTIN/EAN 5906301813163
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 25 mm [±1 mm]
Height 150 mm [±1 mm]
Weight 0.01 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 9 500 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 5 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 25x150 [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
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: 130368-2025
Measurement Calculator
Force (pull)

Field Strength

Other 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 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 contaminants are strongly attracted, so removing them with a bare hand or glove can be difficult. 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.
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. High induction is necessary when contaminants are microscopic or weakly magnetic.
We can produce a rod of non-standard length with any mounting termination. You can choose a mounting method consistent with your technical design. We ensure fast realization of special orders and technical advice.

Pros and cons of neodymium magnets.

Pros

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They do not lose strength, even during around ten years – the reduction in strength is only ~1% (based on measurements),
  • Neodymium magnets are distinguished by exceptionally resistant to magnetic field loss caused by magnetic disturbances,
  • The use of an shiny finish of noble metals (nickel, gold, silver) causes the element to present itself better,
  • The surface of neodymium magnets generates a intense magnetic field – this is a distinguishing feature,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures approaching 230°C and above...
  • Possibility of custom modeling as well as adapting to defined needs,
  • Wide application in advanced technology sectors – they serve a role in data components, drive modules, medical equipment, as well as technologically advanced constructions.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:
  • At very strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength 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
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
  • Due to limitations in creating threads and complicated shapes in magnets, we propose using a housing - magnetic mechanism.
  • Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. Furthermore, tiny parts of these products can complicate diagnosis medical after entering the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Highest magnetic holding forcewhat contributes to it?

The force parameter is a result of laboratory testing performed under specific, ideal conditions:
  • on a block made of structural steel, optimally conducting the magnetic field
  • with a thickness of at least 10 mm
  • with an polished touching surface
  • under conditions of ideal adhesion (metal-to-metal)
  • during detachment in a direction vertical to the plane
  • in neutral thermal conditions

Determinants of lifting force in real conditions

Real force is affected by specific conditions, including (from priority):
  • Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
  • Direction of force – highest force is obtained only during pulling at a 90° angle. The shear force of the magnet along the plate is standardly many times smaller (approx. 1/5 of the lifting capacity).
  • Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
  • Material type – ideal substrate is pure iron steel. Hardened steels may attract less.
  • Base smoothness – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
  • Thermal conditions – NdFeB sinters have a negative temperature coefficient. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was assessed with the use of a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, in contrast under shearing force the lifting capacity is smaller. In addition, even a minimal clearance between the magnet and the plate decreases the lifting capacity.

Safety rules for work with NdFeB magnets
Demagnetization risk

Avoid heat. Neodymium magnets are susceptible to temperature. If you require resistance above 80°C, ask us about special high-temperature series (H, SH, UH).

Warning for allergy sufferers

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If skin irritation appears, immediately stop handling magnets and wear gloves.

Pacemakers

Patients with a ICD should keep an absolute distance from magnets. The magnetic field can stop the operation of the implant.

Danger to the youngest

Strictly store magnets away from children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are fatal.

Magnets are brittle

Despite metallic appearance, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Precision electronics

A powerful magnetic field interferes with the functioning of magnetometers in smartphones and navigation systems. Do not bring magnets close to a device to prevent damaging the sensors.

Magnetic media

Intense magnetic fields can destroy records on credit cards, hard drives, and storage devices. Stay away of min. 10 cm.

Machining danger

Fire warning: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.

Handling rules

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

Finger safety

Big blocks can crush fingers in a fraction of a second. Never put your hand between two strong magnets.

Warning! Looking for details? Check our post: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98