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SM 25x125 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130367

GTIN: 5906301813156

Diameter Ø [±0,1 mm]

25 mm

Height [±0,1 mm]

125 mm

Weight

0.01 g

393.60 ZŁ with VAT / pcs + price for transport

320.00 ZŁ net + 23% VAT / pcs

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SM 25x125 [2xM8] / N52 - magnetic separator

Specification/characteristics SM 25x125 [2xM8] / N52 - magnetic separator

properties

values

Cat. no.

130367

GTIN

5906301813156

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

25 mm [±0,1 mm]

Height

125 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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SM 25x275 [2xM8] / N52 - magnetic separator

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The magnetic separator, namely the magnetic roller, uses the force of neodymium magnets, placed in a construction made of stainless steel mostly AISI304. As a result, it is possible to effectively separate ferromagnetic particles from the mixture. An important element of its operation is the repulsion of magnetic poles N and S, which allows magnetic substances to be targeted. The thickness of the magnet and its structure pitch determine the range and strength of the separator's operation.

Generally speaking, magnetic separators serve to extract ferromagnetic elements. If the cans are ferromagnetic, 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 used in the food sector to clear metallic contaminants, such as iron fragments or iron dust. Our rollers are built from acid-resistant steel, AISI 304, suitable for contact with food.

Magnetic rollers, otherwise cylindrical magnets, find application in food production, metal separation as well as recycling. They help in eliminating iron dust during the process of separating metals from other materials.

Our magnetic rollers consist of a neodymium magnet anchored in a stainless steel tube casing made of stainless steel with a wall thickness of 1mm.

From both sides of the magnetic bar will be with M8 threaded openings, allowing for quick installation in machines or magnetic filter drawers. A "blind" version is also possible in manual separators.

In terms of features, magnetic bars differ in terms of flux density, magnetic force lines and the field of the magnetic field. We produce them in materials, N42 and N52.

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

When the magnet is more flat, the magnetic force lines will be more compressed. By contrast, in the case of a thicker magnet, the force lines will be longer and reach further.

For constructing the casings of magnetic separators - rollers, most often stainless steel is employed, particularly types AISI 316, AISI 316L, and AISI 304.

In a salt water environment, AISI 316 steel exhibits the best resistance due to its exceptional anti-corrosion properties.

Magnetic bars stand out for their unique configuration of poles and their capability to attract magnetic particles directly onto their surface, in contrast to other devices that may utilize more complicated filtration systems.

Technical designations and terms related to magnetic separators comprise among others polarity, magnetic induction, magnet pitch, as well as the type of steel used.

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 result is checked in a value table - the lowest is N30. All designations below N27 or N25 indicate recycling that doesn't meet the standard - they are not suitable.

Neodymium magnetic rollers offer a range of benefits such as higher attracting power, longer lifespan, and effectiveness in separating fine metal particles. On the other hand, among the drawbacks, one can mention higher cost compared to other types of magnets and the need for regular maintenance.

For proper maintenance of neodymium magnetic rollers, it’s worth they should be regularly cleaned, avoiding temperatures up to 80°C. The rollers our rollers have waterproofing IP67, so if they are leaky, the magnets inside can rust and lose their power. Testing of the rollers is recommended be carried out once every 24 months. Caution should be taken during use, 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 cause problems with the magnetic rod seal and product contamination. The range of the roller corresponds 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 the removal of iron metals and iron filings is essential.

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to immense power, neodymium magnets have the following advantages:

They do not lose their strength (of the magnet). After about 10 years, their power decreases by only ~1% (theoretically),
They protect against demagnetization caused by external magnetic field extremely well,
In other words, thanks to the shiny nickel, gold, or silver finish, the element gains an aesthetic appearance,
They exhibit very high magnetic induction on the surface of the magnet,
By using an appropriate combination of materials, they can achieve high thermal resistance, allowing them to operate at temperatures up to 230°C and above...
Due to the option of accurate forming and adaptation to individual needs – neodymium magnets can be produced in a wide range of shapes and sizes, which amplifies their universality in usage.
Significant importance in the industry of new technologies – are utilized in hard drives, electric motors, medical devices or various technologically advanced devices.

Disadvantages of neodymium magnets:

They can break when subjected to a strong impact. If the magnets are exposed to impacts, we recommend using magnets in a protective case. The steel housing in the form of a holder protects the magnet from impacts, and at the same time increases its overall strength,
Magnets lose their power due to exposure to high temperatures. In most cases, when the temperature exceeds 80°C, these magnets experience permanent reduction in strength (although it is worth noting that this is dependent on the form and size of the magnet). To avoid this problem, we offer special magnets marked with the [AH] symbol, which exhibit high temperature resistance. They can operate even at temperatures as high as 230°C or more,
They rust in a humid environment - during outdoor use, we recommend using waterproof magnets, such as those made of rubber or plastic,
Limited ability to create threads or complex shapes in the magnet - the use of a housing is recommended - magnetic holder
Potential hazard to health from tiny fragments of magnets are risky, if swallowed, which becomes significant in the context of child safety. Additionally, small elements of these products can be problematic in medical diagnosis when they are in the body.

Handle Neodymium Magnets Carefully

Neodymium magnets are not recommended for people with pacemakers.

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

Neodymium magnets are extremely fragile, leading to their cracking.

Neodymium magnetic are fragile and will break if allowed to collide with each other, even from a distance of a few centimeters. Despite being made of metal as well as coated with a shiny nickel plating, they are not as hard as steel. In the case of a collision between two magnets, there can be a scattering of small sharp metal fragments in different directions. Protecting your eyes is essential.

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.

Do not give neodymium magnets to youngest children.

Neodymium magnets are not toys. You cannot allow them to become toys for children. In such a situation, surgery is necessary to remove them. In the worst case scenario, it can result in death.

Do not place neodymium magnets near a computer HDD, TV, and wallet.

The strong magnetic field generated by neodymium magnets can destroy magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, etc. devices. They can also destroy devices like video players, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Neodymium Magnets can attract to each other due to their immense internal force, causing the skin and other body parts to get pinched and resulting in significant injuries.

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

Avoid bringing neodymium magnets close to a phone or GPS.

Neodymium magnets are a source of strong magnetic fields that cause interference with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.

If you have a nickel allergy, avoid contact with neodymium magnets.

Studies show a small percentage of people have allergies to certain metals, including 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.

Neodymium magnets can demagnetize at high temperatures.

Although magnets are generally resilient, their ability to retain their magnetic strength can be influenced by factors like the type of material used, the magnet's shape, and the intended purpose for which it is employed.

Neodymium magnets are the strongest magnets ever invented. Their strength can surprise you.

Familiarize yourself with our information to correctly handle these magnets and avoid significant swellings to your body and prevent damage to the magnets.

Safety rules!

In order for you to know how strong neodymium magnets are and why they are so dangerous, see the article - Dangerous powerful neodymium magnets.