← previous

Product available shipping tomorrow

SM 32x125 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130357

GTIN: 5906301813057

Diameter Ø [±0,1 mm]

32 mm

Height [±0,1 mm]

125 mm

Weight

690 g

455.10 ZŁ with VAT / pcs + price for transport

370.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

370.00 ZŁ

455.10 ZŁ

price from 2200 pcs

351.50 ZŁ

432.34 ZŁ

price from 4400 pcs

333.00 ZŁ

409.59 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Want to negotiate the price?

Call us +48 22 499 98 98 or write via form on the contact page. Test the magnet's power with our power calculator.

Orders placed by 14:00 are shipped the same day.

SM 32x125 [2xM8] / N52 - magnetic separator

Specification/characteristics SM 32x125 [2xM8] / N52 - magnetic separator

properties

values

Cat. no.

130357

GTIN

5906301813057

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

32 mm [±0,1 mm]

Height

125 mm [±0,1 mm]

Weight

690 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!

MW 10x8 / N38 - cylindrical magnet

2.03 ZŁ / pcs

Produkt dostępny wysyłka jutro!

MPL 15x3x6 / N38 - lamellar magnet

0.73 ZŁ / pcs

Produkt dostępny wysyłka jutro!

UMGZ 25x17x8 [M5] GZ / N38 - magnetic holder external thread

12.23 ZŁ / pcs

Produkt dostępny wysyłka jutro!

MW 3x1 / N38 - cylindrical magnet

0.14 ZŁ / pcs

The magnetic separator, namely the magnetic roller, uses the force of neodymium magnets, placed in a casing made of stainless steel mostly AISI304. As a result, it is possible to effectively segregate ferromagnetic particles from the mixture. A key aspect 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's pitch determine the power and range of the separator's operation.

Generally speaking, magnetic separators serve to segregate ferromagnetic elements. If the cans are made of 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 the food sector for the elimination of metallic contaminants, such as iron fragments or iron dust. Our rods are constructed from durable acid-resistant steel, AISI 304, 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 eliminating iron dust during the process of separating metals from other wastes.

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

Both ends of the magnetic bar can be with M8 threaded holes - 18 mm, 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 stand out in terms of magnetic force lines, flux density and the field of the magnetic field. We produce them in materials, N42 and N52.

Generally it is believed that the stronger the magnet, the more efficient it is. However, 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 anticipated needs. The standard operating temperature of a magnetic bar is 80°C.

When the magnet is more flat, the magnetic force lines are short. Otherwise, in the case of a thicker magnet, the force lines are longer and reach further.

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

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

Magnetic rollers stand out for their unique configuration of poles and their ability to attract magnetic particles directly onto their surface, as opposed to other separators that may utilize complex filtration systems.

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

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 close to the magnetic pole. The outcome is checked in a value table - the lowest is N30. All designations below N27 or N25 indicate recycling that falls below the standard - they are not suitable.

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

By ensuring proper maintenance of neodymium magnetic rollers, you should cleaning after each use, avoiding temperatures above 80 degrees. The rollers feature waterproofing IP67, so if they are not sealed, the magnets inside can oxidize and weaken. Magnetic field measurements is recommended be carried out once every 24 months. 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 cause problems with the magnetic rod seal and product contamination. The 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, which are used to remove metal contaminants from bulk and granular materials. They are used in the food industry, recycling, and plastic processing, where metal separation is crucial.

Advantages and disadvantages of neodymium magnets NdFeB.

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

They do not lose their power (of the magnet). After about 10 years, their power decreases by only ~1% (theoretically),
They are exceptionally resistant to demagnetization caused by an external magnetic field,
In other words, thanks to the shiny coating of nickel, gold, or silver, the element acquires an aesthetic appearance,
They have exceptionally high magnetic induction on the surface of the magnet,
Thanks to their high temperature resistance, they can operate (depending on the form) even 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 enhances their versatility in applications.
Significant importance in modern technologies – are utilized in computer drives, electric motors, medical equipment or various technologically advanced devices.

Disadvantages of neodymium magnets:

They can break as they are fragile when subjected to a strong impact. If the magnets are exposed to impacts, it is suggested using magnets in a metal holder. The steel housing in the form of a holder protects the magnet from impacts and simultaneously 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 shape and height). However, we also offer special magnets with high temperature resistance, up to 230°C,
Magnets exposed to a humid environment can corrode. Therefore, when using them outdoors, we suggest using waterproof magnets made of rubber, plastic, or other moisture-resistant materials,
Limited ability to create threads or complex shapes in the magnet - the use of a housing is recommended - magnetic holder
Possible danger to health from tiny fragments of magnets pose a threat, if swallowed, which is crucial in the aspect of protecting young children. It's also worth noting that small elements of these devices are able to be problematic in medical diagnosis after entering the body.

Be Cautious with Neodymium Magnets

Neodymium magnets can become demagnetized 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.

Dust and powder from neodymium magnets are highly 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.

It is important to keep neodymium magnets out of reach from youngest children.

Neodymium magnets are not toys. You cannot allow them to become toys for children. In the case of small magnets, they can be swallowed and cause choking. In such cases, the only solution is to undergo surgery to remove the magnets, and otherwise, it can even lead to death.

Under no circumstances should neodymium magnets be placed near a computer HDD, TV, and wallet.

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

It is crucial not to allow the magnets to pinch together uncontrollably or place your fingers in their path as they attract to each other.

Magnets will crack or crumble with careless joining to each other. You can't move them to each other. At a distance less than 10 cm you should have them extremely strongly.

Neodymium magnetic are highly susceptible to damage, leading to their cracking.

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

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

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

Please review the information on how to handle neodymium magnets and avoid significant harm to your body, as well as prevent unintentional damage to the magnets.

Never bring neodymium magnets close to a phone and 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.

The magnet is coated with nickel - be careful if you have an 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.

Safety precautions!

Please see the article - What danger lies in neodymium magnets? You will learn how to handle them properly.