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SM 32x300 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130459

GTIN: 5906301813309

Diameter Ø [±0,1 mm]

32 mm

Height [±0,1 mm]

300 mm

Weight

1660 g

971.70 ZŁ with VAT / pcs + price for transport

790.00 ZŁ net + 23% VAT / pcs

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SM 32x300 [2xM8] / N52 - magnetic separator

Specification/characteristics SM 32x300 [2xM8] / N52 - magnetic separator

properties

values

Cat. no.

130459

GTIN

5906301813309

Production/Distribution

Dhit sp. z o.o.

Country of origin

Polska / Chiny / Niemcy

Customs code

85059029

Diameter Ø

32 mm [±0,1 mm]

Height

300 mm [±0,1 mm]

Weight

1660 g [±0,1 mm]

tolerancja wykonania

± 0.1 mm

Magnetic properties of material N52

properties

values

units

remenance Br [Min. - Max.] ?

14.2-14.7

kGs

remenance Br [Min. - Max.] ?

1420-1470

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 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 magnetic separator, namely the magnetic roller, uses the power of neodymium magnets, placed in a construction made of stainless steel mostly AISI304. As a result, it is possible to precisely remove ferromagnetic elements from the mixture. A key aspect of its operation is the repulsion of N and S poles of neodymium magnets, which enables magnetic substances to be attracted. The thickness of the magnet and its structure's pitch affect the power and range of the separator's operation.

Generally speaking, magnetic separators are designed to segregate ferromagnetic elements. If the cans are made from ferromagnetic materials, the separator will effectively segregate them. However, if the cans are made of non-ferromagnetic materials, such as aluminum, the magnetic separator will not be effective.

Yes, magnetic rollers find application in food production to clear metallic contaminants, such as iron fragments or iron dust. Our rods are made from acid-resistant steel, AISI 304, suitable for use in food.

Magnetic rollers, otherwise magnetic separators, are used in metal separation, food production as well as recycling. They help in eliminating iron dust in the course of the process of separating metals from other materials.

Our magnetic rollers are composed of neodymium magnets embedded in a tube of stainless steel with a wall thickness of 1mm.

Both ends of the magnetic bar can be with M8 threaded holes - 18 mm, allowing for quick installation in machines or magnetic filter drawers. A "blind" version is also possible in manual separators.

In terms of forces, 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 greater the magnet's power, the more effective. But, the value of the magnet's power depends 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 expected needs. The standard operating temperature of a magnetic bar is 80°C.

When the magnet is thin, the magnetic force lines are more compressed. By contrast, in the case of a thicker magnet, the force lines will be extended and extend over a greater distance.

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

In a saltwater environment, AISI 316 steel is recommended thanks to its excellent anti-corrosion properties.

Magnetic bars are characterized by their unique configuration of poles and their capability to attract magnetic substances directly onto their surface, in contrast to other devices that often use more complicated filtration systems.

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

Magnetic induction for a roller is measured using a teslameter or a gaussmeter with a flat Hall-effect probe, seeking the highest magnetic field value close to 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 doesn't meet the standard - they are not suitable.

Neodymium magnetic bars offer a range of benefits such as excellent separation efficiency, strong magnetic field, and durability. However, some of the downsides may involve the requirement for frequent cleaning, greater weight, and potential installation difficulties.

To properly maintain of neodymium magnetic rollers, it is recommended regularly cleaning them from contaminants, avoiding high temperatures above 80 degrees, and shielding them from moisture if the threads are not sealed – in ours, they are. The rollers our rollers have waterproofing IP67, so if they are not sealed, the magnets inside can oxidize and lose their power. Testing of the rollers is recommended 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 cause 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.

Magnetic rollers are cylindrical neodymium magnets placed in a casing made of corrosion-resistant stainless steel, used for separating ferromagnetic contaminants from raw materials. They are used in the food industry, recycling, and plastic processing, where the removal of iron metals and iron filings is essential.

Advantages and disadvantages of neodymium magnets

Neodymium magnets, also known as NdFeB magnets, are currently the strongest permanent magnets available on the market. Their exceptional magnetic properties make them suitable for various industries, technologies, and everyday life. Below are the key advantages:

Immense attractive force: Even small neodymium magnets generate a very strong magnetic field.
High coercivity: They are resistant to demagnetization by external magnetic fields.
Wide operating temperature range: Standard neodymium magnets operate up to 80°C, with special versions up to 230°C.
Variety of shapes and sizes: Available in many forms, making them easy to adapt to specific applications.
Relatively low price compared to strength: They offer the best strength-to-price ratio among all magnets.
Longevity: With proper use, they retain their magnetic properties for many years.
Versatility of applications: From electric motors to speakers, separators, toys, and jewelry.

Despite numerous advantages, neodymium magnets also have certain disadvantages to consider:

Brittleness: They are hard but brittle and prone to cracking or chipping upon impact.
Susceptibility to corrosion: They require a protective coating (e.g., nickel, zinc) to prevent rusting.
Limited operating temperature for standard versions: Above the Curie temperature, they lose their magnetic properties.
Strong magnetic field can be dangerous: They can damage electronics, magnetic cards, and pose a risk of attracting metal objects with great force.
Difficulties in mechanical processing: Due to their hardness and brittleness, processing them is complex.

Be Cautious with Neodymium Magnets

Neodymium magnets are over 10 times stronger than ferrite magnets (the ones in speakers), and their strength can shock you.

To handle 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 demagnetize at high temperatures.

Whilst Neodymium magnets can demagnetize at high temperatures, it's important to note that the extent of this effect can vary based on factors such as the magnet's material, shape, and intended application.

Neodymium magnetic are fragile as well as can easily break as well as shatter.

Neodymium magnetic are fragile and will shatter if allowed to collide with each other, even from a distance of a few centimeters. They are coated with a shiny nickel plating similar to steel, but they are not as hard. At the moment of collision between the magnets, small sharp metal pieces can be propelled in various directions at high speed. Eye protection is recommended.

Dust and powder from neodymium magnets are highly flammable.

Avoid drilling or mechanical processing of neodymium magnets. If the magnet is crushed into fine powder or dust, it becomes highly flammable.

Magnets are not toys, children should not play with them.

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.

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.

Neodymium magnets are primarily characterized by their significant internal force. They attract to each other, and any object that comes in their way will be affected.

Neodymium magnets jump and also touch each other mutually within a radius of several to around 10 cm from each other.

Under no circumstances should neodymium magnets be brought close to GPS and smartphones.

Magnetic fields interfere with compasses and magnetometers used in navigation for air and sea transport, as well as internal compasses of smartphones and GPS devices.

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

Neodymium magnets generate strong magnetic fields that can damage magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, or other devices. They can also damage devices like video players, televisions, CRT computer monitors. Do not forget to keep neodymium magnets away from these electronic devices.

Neodymium magnets should not be near people with pacemakers.

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.

So that know how strong neodymium magnets are and why they are so dangerous, read the article - Dangerous powerful neodymium magnets.