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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

bulk discounts:

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Strength as well as form of a magnet can be verified using our online calculation tool.

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Product card - 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
Engineering data and GPSR
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%
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: 130368-2025
Measurement Calculator
Magnet pull force

Field Strength

Check out also proposals

A magnetic rod is the basic element of building grate separators and magnetic filters. 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 construction relies on a sealed, welded stainless steel housing, polished smooth. The core is a precise magnetic system generating high induction (Gauss). 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). For easier operation, it is worth considering ordering a rod in a version with a cleaning sleeve.
The more Gauss, the smaller and more weakly magnetic particles will be effectively caught. 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.
Yes, as a manufacturer, we make rods of any length and diameter (standard is dia 25mm and 32mm). 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 Nd2Fe14B magnets.

Strengths

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • Their magnetic field remains stable, and after approximately 10 years it decreases only by ~1% (theoretically),
  • They feature excellent resistance to magnetic field loss due to external fields,
  • The use of an refined layer of noble metals (nickel, gold, silver) causes the element to present itself better,
  • Magnets are distinguished by maximum magnetic induction on the surface,
  • Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
  • Thanks to modularity in shaping and the ability to adapt to individual projects,
  • Significant place in electronics industry – they are utilized in magnetic memories, electromotive mechanisms, advanced medical instruments, also complex engineering applications.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:
  • At very strong impacts they can crack, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
  • Limited ability of creating threads in the magnet and complicated forms - recommended is cover - magnet mounting.
  • Possible danger to health – tiny shards of magnets are risky, if swallowed, which is particularly important in the context of child health protection. Furthermore, small components of these devices can disrupt the diagnostic process medical in case of swallowing.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum magnetic pulling forcewhat it depends on?

Magnet power was determined for optimal configuration, assuming:
  • on a base made of structural steel, effectively closing the magnetic flux
  • possessing a massiveness of at least 10 mm to avoid saturation
  • with a plane cleaned and smooth
  • with zero gap (no paint)
  • during pulling in a direction perpendicular to the mounting surface
  • in stable room temperature

Practical aspects of lifting capacity – factors

In practice, the real power is determined by several key aspects, ranked from the most important:
  • Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Base massiveness – too thin steel does not close the flux, causing part of the power to be escaped to the other side.
  • Material type – the best choice is pure iron steel. Stainless steels may attract less.
  • Surface quality – the more even the plate, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
  • Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under parallel forces the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet’s surface and the plate reduces the load capacity.

H&S for magnets
Conscious usage

Use magnets consciously. Their powerful strength can shock even experienced users. Plan your moves and do not underestimate their power.

Dust is flammable

Drilling and cutting of NdFeB material carries a risk of fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Risk of cracking

Despite the nickel coating, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.

Electronic hazard

Data protection: Strong magnets can ruin data carriers and sensitive devices (pacemakers, hearing aids, timepieces).

GPS and phone interference

GPS units and smartphones are extremely sensitive to magnetism. Close proximity with a strong magnet can permanently damage the sensors in your phone.

Life threat

Life threat: Strong magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.

Serious injuries

Watch your fingers. Two powerful magnets will join instantly with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

Adults only

Product intended for adults. Tiny parts can be swallowed, leading to intestinal necrosis. Store away from kids and pets.

Demagnetization risk

Monitor thermal conditions. Heating the magnet to high heat will destroy its magnetic structure and pulling force.

Nickel coating and allergies

Nickel alert: The Ni-Cu-Ni coating contains nickel. If skin irritation happens, immediately stop handling magnets and use protective gear.

Caution! 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