Powerful, practical magnetic roller SM 32x150 [2xM8] / N52

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SM 32x150 [2xM8] / N52 - magnetic roller

magnetic separator

catalog number 130358

GTIN: 5906301813064

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diameter Ø

32 mm [±0,1 mm]

height

150 mm [±0,1 mm]

max. temperature

≤ 80 °C

528.90 ZŁ gross price (including VAT) / pcs +

430.00 ZŁ net price + 23% VAT / pcs

bulk discounts:

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price from 1 pcs

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Want to talk about magnets?

Call us tel: +48 22 499 98 98 or contact us via contact form on the contact page. You can check the mass as well as the appearance of neodymium magnets in our magnetic mass calculator magnetic mass calculator

Orders placed by 2:00 PM will be shipped on the same business day.

Specification: magnetic separator 32x150 [2xM8] / N52

Characteristics: magnetic separator 32x150 [2xM8] / N52

Properties

Values

catalog number

130358

GTIN

5906301813064

production / distribution

Dhit sp. z o.o.

country of origin

Poland / China / Germany

customs code

85059029

diameter Ø

32 mm [±0,1 mm]

height

150 mm [±0,1 mm]

max. temperature ?

≤ 80 °C

weight

830.00 g

execution tolerance

± 0.1 mm

rodzaj materiału

AISI 304 - bezpieczna dla żywności

rodzaj magnesów

NdFeB N52

ilość gwintów

2x [M8] wewnętrzne

biegunowość

obwodowa - 5 nabiegunników

indukcja magnetyczna

~ 10 000 Gauss [±5%]

max. temp. pracy

poniżej ≤ 80°C

grubość rury osłonowej

1 mm

Magnetic properties of the material N52

material characteristics 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 sintered neodymium magnets Nd₂Fe₁₄B

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

The main mechanism of the magnetic separator is the use of neodymium magnets, which are embedded in a casing made of stainless steel mostly AISI304. As a result, it is possible to efficiently separate ferromagnetic elements from other materials. An important element of its operation is the use of repulsion of N and S poles of neodymium magnets, which enables magnetic substances to be collected. The thickness of the embedded magnet and its structure's pitch affect the range and strength of the separator's operation.

Generally speaking, magnetic separators serve to segregate ferromagnetic particles. 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 magnetic separator will not be effective.

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

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

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

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

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

Generally it is believed that the greater the magnet's power, the more efficient it is. Nevertheless, the effectiveness 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 anticipated needs. The standard operating temperature of a magnetic bar is 80°C.

In the case where 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 extended and reach further.

For constructing the casings of magnetic separators - rollers, usually stainless steel is utilized, especially types AISI 304, AISI 316, and AISI 316L.

In a saltwater contact, type AISI 316 steel is highly recommended due to its outstanding anti-corrosion properties.

Magnetic rollers stand out for their specific arrangement of poles and their capability to attract magnetic substances directly onto their surface, as opposed to other separators 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 steel type applied.

Magnetic induction for a magnet on a roller is measured using a teslameter or a gaussmeter with a flat Hall-effect probe, seeking the highest magnetic field value near the magnetic pole. The result is checked in a value table - the lowest is N30. All designations less than N27 or N25 indicate recycling that falls below the standard - they are not suitable.

Neodymium magnetic bars 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.

To properly maintain of neodymium magnetic rollers, it’s worth washing regularly, avoiding temperatures up to 80°C. The rollers our rollers have waterproofing IP67, so if they are not sealed, the magnets inside can rust and weaken. Magnetic field measurements should be carried out every two years. Caution should be taken during use, as it’s possible getting pinched. 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 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.

Magnetic rollers are cylindrical neodymium magnets placed in a casing made of corrosion-resistant stainless steel, which are used to remove metal contaminants from bulk and granular materials. They are used in the food industry, recycling, and plastic processing, where the removal of iron metals and iron filings is essential.

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Advantages as well as disadvantages of neodymium magnets NdFeB.

Apart from immense power, neodymium magnets have the following advantages:

They do not lose their strength (of the magnet). After about 10 years, their strength decreases by only ~1% (theoretically),
They protect against demagnetization caused by external magnetic sources extremely well,
In other words, thanks to the shiny nickel, gold, or silver finish, the element gains an aesthetic appearance,
They exhibit extremely 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...
Thanks to the flexibility in shaping or the ability to adapt to specific requirements – neodymium magnets can be produced in various forms and dimensions, which expands the range of their possible uses.
Key role in the industry of new technologies – are utilized in hard drives, electric motors, medical equipment and very modern machines.

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 steel housing. The steel housing in the form of a holder protects the magnet from impacts and at the same time increases its overall strength,
They lose strength at high temperatures. Most neodymium magnets experience permanent loss of strength when heated above 80°C (depending on the form and height). However, we also offer special magnets with high temperature resistance, up to 230°C,
They rust in a humid environment - during outdoor use, we recommend using waterproof magnets, such as those made of rubber or plastic,
The use of a cover - a magnetic holder is recommended due to the limited production capabilities of creating threads or complex shapes in the magnet
Potential hazard associated with microscopic parts of magnets are risky, if swallowed, which is particularly important in the context of child safety. It's also worth noting that tiny parts of these devices can complicate diagnosis in case of swallowing.

Safety Precautions

Dust and powder from neodymium magnets are flammable.

Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. Once crushed into fine powder or dust, this material becomes highly flammable.

Avoid bringing neodymium magnets close to a phone or GPS.

Neodymium magnets produce strong magnetic fields that interfere with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.

Neodymium magnets can demagnetize 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.

The magnet coating contains nickel, so be cautious if you have a nickel allergy.

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.

You should maintain neodymium magnets at a safe distance from the wallet, computer, and TV.

Strong magnetic fields emitted by neodymium magnets can damage magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other devices. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. Avoid placing neodymium magnets in close proximity to electronic devices.

Comparing neodymium magnets to ferrite magnets (found in speakers), they are 10 times stronger, and their strength can surprise you.

On our website, you can find information on how to use neodymium magnets. This will help you avoid injuries and prevent damage to the magnets.

Neodymium magnets should not be around children.

Not all neodymium magnets are toys, so do not let children play with them. In such a situation, surgery is necessary to remove them. In the worst case scenario, it can result in death.

Magnets made of neodymium are extremely fragile, they easily crack as well as can become damaged.

Magnets made of neodymium are highly delicate, and by joining them in an uncontrolled manner, they will break. Neodymium magnets are made of metal and coated with a shiny nickel, but they are not as durable as steel. At the moment of connection between the magnets, small metal fragments can be dispersed in different directions.

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. Even if the magnetic field does not affect the device, it can damage its components or deactivate the entire device.

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

Neodymium magnets bounce and also touch each other mutually within a distance of several to almost 10 cm from each other.

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

SM 32x150 [2xM8] / N52 - magnetic roller

magnetic separator

Specification: magnetic separator 32x150 [2xM8] / N52

Magnetic properties of the material N52

Physical properties of sintered neodymium magnets Nd2Fe14B

List recommended items

magnetic separator with handle 32x100 / N52

magnetic separator 25x250 [2xM8] / N52

magnetic holder with hook 48x11x65 [M6] / N38 ↑ axial

magnetic separator 32x175 [2xM8] / N42

Advantages as well as disadvantages of neodymium magnets NdFeB.

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B