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SM 25x100 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130366

GTIN: 5906301813149

Diameter Ø [±0,1 mm]

25 mm

Height [±0,1 mm]

100 mm

Weight

0.01 g

319.80 ZŁ with VAT / pcs + price for transport

260.00 ZŁ net + 23% VAT / pcs

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SM 25x100 [2xM8] / N52 - magnetic separator

Specification/characteristics SM 25x100 [2xM8] / N52 - magnetic separator

properties

values

Cat. no.

130366

GTIN

5906301813149

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

25 mm [±0,1 mm]

Height

100 mm [±0,1 mm]

Weight

0.01 g [±0,1 mm]

Manufacturing Tolerance

± 0.1 mm

Magnetic properties of material N52

properties

values

units

coercivity bHc ?

860-995

kA/m

coercivity bHc ?

10.8-12.5

kOe

energy density [Min. - Max.] ?

380-422

BH max KJ/m

energy density [Min. - Max.] ?

48-53

BH max MGOe

remenance Br [Min. - Max.] ?

14.2-14.7

kGs

remenance Br [Min. - Max.] ?

1420-1470

actual internal force iHc

≥ 955

kA/m

actual internal force iHc

≥ 12

kOe

max. temperature ?

≤ 80

°C

Physical properties of NdFeB

properties

values

units

Vickers hardness

≥550

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 106

°C^-1

Thermal expansion perpendicular (⊥) to orientation (M)

-(1-3) x 10-6

°C^-1

Young's modulus

1.7 x 104

kg/mm²

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The device rod magnetic is based on the use of neodymium magnets, which are welded in a construction made of stainless steel usually AISI304. In this way, it is possible to efficiently separate ferromagnetic particles from other materials. A fundamental component of its operation is the use of repulsion of magnetic poles N and S, which causes magnetic substances to be attracted. The thickness of the embedded magnet and its structure pitch determine the range and strength of the separator's operation.

Generally speaking, magnetic separators are used to separate ferromagnetic particles. If the cans are made of ferromagnetic materials, the separator will be able to separate them. However, if the cans are made of non-ferromagnetic materials, such as aluminum, the separator will not effectively segregate them.

Yes, magnetic rollers are employed in the food sector to clear metallic contaminants, including iron fragments or iron dust. Our rollers are built from durable acid-resistant steel, EN 1.4301, approved for use in food.

Magnetic rollers, often called cylindrical magnets, are employed in metal separation, food production as well as waste processing. They help in extracting iron dust in the course of the process of separating metals from other materials.

Our magnetic rollers are composed of a neodymium magnet placed in a tube made of stainless steel with a wall thickness of 1mm.

From both sides of the magnetic bar can be with M8 threaded openings, enabling simple mounting in machines or magnetic filter drawers. A "blind" version is also possible in manual separators.

In terms of magnetic properties, magnetic bars stand out in terms of flux density, magnetic force lines and the field of the magnetic field. We produce them in materials, N42 as well as N52.

Often it is believed that the greater the magnet's power, the better. But, the value of the magnet's power is dependent on the height of the used magnet and the quality of the material [N42] or [N52], as well as on the area of application and specific needs. The standard operating temperature of a magnetic bar is 80°C.

In the case where the magnet is thin, the magnetic force lines are short. By contrast, in the case of a thicker magnet, the force lines are longer and reach further.

For creating the casings of magnetic separators - rollers, frequently stainless steel is used, particularly types AISI 316, AISI 316L, and AISI 304.

In a salt water environment, type AISI 316 steel is recommended due to its excellent corrosion resistance.

Magnetic bars stand out for their specific arrangement of poles and their ability to attract magnetic substances directly onto their surface, as opposed to other devices that often use complex filtration systems.

Technical designations and terms pertaining to magnetic separators include amongst others polarity, magnetic induction, magnet pitch, as well as the steel type applied.

Magnetic induction for a magnet on a roller is determined using a teslameter or a gaussmeter with a flat Hall-effect probe, aiming to find the highest magnetic field value near the magnetic pole. The outcome is verified in a value table - the lowest is N30. All designations less than N27 or N25 suggest recycling that falls below the standard - they are not suitable.

Neodymium magnetic bars offer a range of benefits such as a very strong magnetic field, the ability to capture even the tiniest metal particles, and durability. However, some of the downsides may involve the need for regular cleaning, higher cost, and potential installation challenges.

To properly maintain of neodymium magnetic rollers, it is recommended they should be regularly cleaned, avoiding temperatures above 80 degrees. The rollers feature waterproofing IP67, so if they are leaky, the magnets inside can oxidize and weaken. Magnetic field measurements should be carried out every two years. Care should be taken, as it’s possible of finger injury. If the protective tube is only 0.5 mm thick, it may wear out, which in turn could lead to problems with the magnetic rod seal and product contamination. The effective range of the roller is equal to its diameter: fi25mm gives an active range of about 25mm, while fi32 gives an active range of about 40mm.

A magnetic roller is a magnetic separator made from a neodymium magnet enclosed in a cylindrical stainless steel housing, used for separating ferromagnetic contaminants from raw materials. They are applied in industries such as food processing, ceramics, and recycling, where metal separation is crucial.

Advantages and disadvantages of neodymium magnets NdFeB.

Apart from their consistent holding force, neodymium magnets have these key benefits:

Their strength is durable, and after approximately ten years, it drops only by ~1% (according to research),
Their ability to resist magnetic interference from external fields is impressive,
By applying a reflective layer of silver, the element gains a sleek look,
They exhibit elevated levels of magnetic induction near the outer area of the magnet,
They are suitable for high-temperature applications, operating effectively at 230°C+ due to advanced heat resistance and form-specific properties,
Thanks to the possibility in shaping and the capability to adapt to unique requirements, neodymium magnets can be created in diverse shapes and sizes, which broadens their usage potential,
Important function in new technology industries – they find application in data storage devices, electric drives, medical equipment as well as other advanced devices,
Compactness – despite their small size, they generate strong force, making them ideal for precision applications

Disadvantages of magnetic elements:

They are fragile when subjected to a sudden impact. If the magnets are exposed to external force, it is suggested to place them in a protective enclosure. The steel housing, in the form of a holder, protects the magnet from breakage and additionally reinforces its overall resistance,
High temperatures may significantly reduce the holding force of neodymium magnets. Typically, above 80°C, they experience permanent decline in performance (depending on form). To prevent this, we offer heat-resistant magnets marked [AH], capable of working up to 230°C, which makes them perfect for high-temperature use,
Due to corrosion risk in humid conditions, it is recommended to use sealed magnets made of protective material for outdoor use,
Using a cover – such as a magnetic holder – is advised due to the restrictions in manufacturing complex structures directly in the magnet,
Health risk related to magnet particles may arise, if ingested accidentally, which is important in the health of young users. Moreover, small elements from these magnets may complicate medical imaging after being swallowed,
High unit cost – neodymium magnets are pricier than other types of magnets (e.g., ferrite), which may limit large-scale applications

Handle Neodymium Magnets with Caution

Neodymium magnets can attract to each other, pinch the skin, and cause significant swellings.

If you have a finger between or on the path of attracting magnets, there may be a severe cut or even a fracture.

Neodymium magnets should not be in the vicinity youngest children.

Remember that neodymium magnets are not toys. Do not allow children to play with them. In the case of swallowing multiple magnets simultaneously, they can attract to each other through the intestinal walls. In the worst case scenario, this can lead to death.

Neodymium magnetic are characterized by their fragility, which can cause them to shatter.

In the event of a collision between two neodymium magnets, it can result in them getting chipped. Despite being made of metal and coated with a shiny nickel plating, they are not as hard as steel. At the moment of connection between the magnets, tiny sharp metal pieces can be propelled in various directions at high speed. Eye protection is recommended.

Avoid bringing neodymium magnets close to a phone or GPS.

Intense magnetic fields generated by neodymium magnets interfere with compasses and magnetometers used in navigation, as well as internal compasses of smartphones and GPS devices.

Avoid contact with neodymium magnets if you have a nickel allergy.

Studies clearly indicate a small percentage of people who suffer from metal allergies such as nickel. An allergic reaction often manifests as skin redness and rash. If you have a nickel allergy, try wearing gloves or avoid direct contact with nickel-plated neodymium magnets.

Keep neodymium magnets away from TV, wallet, and computer HDD.

Neodymium magnets generate intense magnetic fields that can destroy magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, etc. devices. They can also damage videos, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Neodymium magnets are among the strongest magnets on Earth. The astonishing force they generate between each other can surprise you.

To use magnets properly, it is best to familiarize yourself with our information beforehand. This will help you avoid significant harm to your body and the magnets themselves.

Neodymium magnets can become demagnetized at high temperatures.

Although magnets have demonstrated their effectiveness up to 80°C or 175°F, the temperature can vary depending on the type, shape, and intended use of the specific magnet.

Dust and powder from neodymium magnets are flammable.

Avoid drilling or mechanical processing of neodymium magnets. Once crushed into fine powder or dust, this material becomes highly flammable.

People with pacemakers are advised to avoid neodymium magnets.

Neodymium magnets produce strong magnetic fields that can interfere with the operation of a heart pacemaker. However, if the magnetic field does not affect the device, it can damage its components or deactivate the device when it is in a magnetic field.

Warning!

To show why neodymium magnets are so dangerous, see the article - How very dangerous are very powerful neodymium magnets?.