← previous

Product available shipping tomorrow

SM 25x150 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130368

GTIN: 5906301813163

Diameter Ø [±0,1 mm]

25 mm

Height [±0,1 mm]

150 mm

Weight

0.01 g

467.40 ZŁ with VAT / pcs + price for transport

380.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

380.00 ZŁ

467.40 ZŁ

price from 7 pcs

361.00 ZŁ

444.03 ZŁ

price from 12 pcs

342.00 ZŁ

420.66 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Want to negotiate?

Call us now +48 22 499 98 98 alternatively send us a note via our online form the contact page.
Parameters and shape of magnetic components can be calculated on our magnetic mass calculator.

Orders placed before 14:00 will be shipped the same business day.

SM 25x150 [2xM8] / N52 - magnetic separator

Specification/characteristics SM 25x150 [2xM8] / N52 - magnetic separator

properties

values

Cat. no.

130368

GTIN

5906301813163

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

25 mm [±0,1 mm]

Height

150 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

Shopping tips

Produkt dostępny wysyłka jutro!

UMT 12x20 blue / N38 - board holder

1.89 ZŁ / pcs

Produkt dostępny wysyłka jutro!

MP 62x42x25 / N38 - ring magnet

165.00 ZŁ / pcs

Produkt dostępny wysyłka jutro!

LM TLN - 22 SQ / N38 - magnetic leviton

523.00 ZŁ / pcs

Produkt dostępny wysyłka jutro!

MW 5x10 / N38 - cylindrical magnet

0.65 ZŁ / pcs

The magnetic separator, namely the magnetic roller, uses the force of neodymium magnets, placed in a construction made of stainless steel usually AISI304. In this way, it is possible to effectively remove ferromagnetic particles from different substances. An important element of its operation is the use of repulsion of magnetic poles N and S, which enables magnetic substances to be collected. The thickness of the magnet and its structure's pitch determine the range and strength of the separator's operation.

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

Yes, magnetic rollers are employed in the food sector for the elimination of metallic contaminants, for example iron fragments or iron dust. Our rods are made from acid-resistant steel, AISI 304, approved for use in food.

Magnetic rollers, often called magnetic separators, are employed in metal separation, food production as well as waste processing. They help in extracting iron dust during the process of separating metals from other wastes.

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

Both ends of the magnetic bar will be with M8 threaded openings, enabling easy installation in machines or magnetic filter drawers. A "blind" version is also possible in manual separators.

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

Usually it is believed that the greater the magnet's power, the more efficient it is. However, the strength 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 anticipated 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. Otherwise, in the case of a thicker magnet, the force lines are extended and reach further.

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

In a saltwater contact, type AISI 316 steel exhibits the best resistance thanks to its outstanding anti-corrosion properties.

Magnetic rollers stand out for their specific arrangement of poles and their ability to attract magnetic particles directly onto their surface, in contrast to other separators that often use more complicated filtration systems.

Technical designations and terms related to magnetic separators comprise among others magnet pitch, polarity, and magnetic induction, 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 close to the magnetic pole. The result is checked 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 many advantages, including 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.

By ensuring proper maintenance of neodymium magnetic rollers, it is recommended regularly cleaning them from deposits, avoiding high temperatures above 80 degrees, and shielding them from moisture if the threads are not sealed – in ours, they are. The rollers feature 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 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 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, which are used to remove metal contaminants from bulk and granular 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 and disadvantages of neodymium magnets NdFeB.

Apart from their strong magnetism, neodymium magnets have these key benefits:

They have stable power, and over nearly 10 years their performance decreases symbolically – ~1% (in testing),
They show superior resistance to demagnetization from external field exposure,
The use of a mirror-like nickel surface provides a smooth finish,
They exhibit elevated levels of magnetic induction near the outer area of the magnet,
Neodymium magnets are known for strong magnetic induction and the ability to work at temperatures up to 230°C or higher (depending on the magnetic form),
Thanks to the flexibility in shaping and the capability to adapt to unique requirements, neodymium magnets can be created in different geometries, which increases their application range,
Key role in new technology industries – they are utilized in computer drives, electric drives, healthcare devices or even other advanced devices,
Compactness – despite their small size, they generate strong force, making them ideal for precision applications

Disadvantages of magnetic elements:

They may fracture when subjected to a heavy impact. If the magnets are exposed to shocks, it is suggested to place them in a metal holder. The steel housing, in the form of a holder, protects the magnet from cracks and additionally increases its overall durability,
Magnets lose pulling force when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible performance loss (influenced by the magnet’s dimensions). To address this, we provide [AH] models with superior thermal resistance, able to operate even at 230°C or more,
They rust in a wet environment. If exposed to rain, we recommend using sealed magnets, such as those made of plastic,
The use of a protective casing or external holder is recommended, since machining multi-axis shapes in neodymium magnets is restricted,
Health risk related to magnet particles may arise, especially if swallowed, which is notable in the family environments. Furthermore, tiny components from these devices have the potential to hinder health screening after being swallowed,
In cases of tight budgets, neodymium magnet cost is a challenge,

Exercise Caution with Neodymium Magnets

Magnets should not be treated as toys. Therefore, it is not recommended for children to have access to them.

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.

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 generate strong magnetic fields. As a result, they interfere with the operation of a pacemaker. This happens because such devices have a function to deactivate them in a magnetic field.

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

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

Do not bring neodymium magnets close to GPS and smartphones.

Magnetic fields can interfere with compasses and magnetometers used in aviation and maritime navigation, as well as internal compasses of smartphones and GPS devices. There are neodymium magnets in every smartphone, for example, in the microphone and speakers.

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.

Magnets will attract to each other, so remember not to allow them to pinch together without control or place your fingers in their path.

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

Neodymium magnets are the most powerful, most remarkable magnets on the planet, and the surprising force between them can shock you at first.

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 are extremely fragile, resulting in shattering.

Neodymium magnets are fragile as well as will shatter if allowed to collide with each other, even from a distance of a few centimeters. Despite being made of metal and 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.

Neodymium magnets can demagnetize at high temperatures.

In certain circumstances, Neodymium magnets can lose their magnetism when subjected to high temperatures.

Safety precautions!

In order to illustrate why neodymium magnets are so dangerous, read the article - How very dangerous are very powerful neodymium magnets?.