← previous

Product available shipping tomorrow

SM 32x275 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130458

GTIN: 5906301813293

Diameter Ø [±0,1 mm]

32 mm

Height [±0,1 mm]

275 mm

Weight

1520 g

897.90 ZŁ with VAT / pcs + price for transport

730.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

730.00 ZŁ

897.90 ZŁ

price from 5 pcs

693.50 ZŁ

853.01 ZŁ

price from 10 pcs

657.00 ZŁ

808.11 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Want to talk magnets?

Call us +48 22 499 98 98 or drop us a message through form the contact page.
Parameters and structure of magnetic components can be estimated on our power calculator.

Same-day processing for orders placed before 14:00.

SM 32x275 [2xM8] / N52 - magnetic separator

Specification/characteristics SM 32x275 [2xM8] / N52 - magnetic separator

properties

values

Cat. no.

130458

GTIN

5906301813293

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

32 mm [±0,1 mm]

Height

275 mm [±0,1 mm]

Weight

1520 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 10x30 / N38 - cylindrical magnet

6.38 ZŁ / pcs

Produkt dostępny wysyłka jutro!

SM 18x300 [2xM5] / N42 - magnetic separator

664.20 ZŁ / pcs

Produkt dostępny wysyłka jutro!

NCM 15x13.5x5 / N38 - channel magnetic holder

5.10 ZŁ / pcs

Produkt dostępny wysyłka jutro!

MW 20x2 / N38 - cylindrical magnet

2.03 ZŁ / pcs

The main mechanism of the magnetic separator is the use of neodymium magnets, which are welded in a casing made of stainless steel mostly AISI304. As a result, it is possible to precisely separate ferromagnetic elements from the mixture. 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 power and range of the separator's operation.

Generally speaking, magnetic separators are used to segregate ferromagnetic particles. If the cans are ferromagnetic, a magnetic separator will be effective. However, if the cans are made of non-ferromagnetic materials, such as aluminum, the magnetic separator will not be effective.

Yes, magnetic rollers are employed in food production to clear metallic contaminants, such as iron fragments or iron dust. Our rollers are made from acid-resistant steel, EN 1.4301, intended for contact with food.

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

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

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

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

Often it is believed that the stronger the magnet, the more effective. Nevertheless, the strength 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 application and expected needs. The standard operating temperature of a magnetic bar is 80°C.

If the magnet is thin, the magnetic force lines are more compressed. Otherwise, in the case of a thicker magnet, the force lines will be longer and extend over a greater distance.

For making the casings of magnetic separators - rollers, most often stainless steel is used, especially types AISI 304, AISI 316, and AISI 316L.

In a salt water environment, AISI 316 steel exhibits the best resistance thanks to its exceptional corrosion resistance.

Magnetic bars stand out for their specific arrangement of poles and their ability to attract magnetic substances directly onto their surface, as opposed to other separators that may utilize complex filtration systems.

Technical designations and terms related to magnetic separators include among others polarity, magnetic induction, magnet pitch, 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, 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 a very strong magnetic field, the ability to capture even the tiniest metal particles, and durability. Disadvantages may include higher cost compared to other types of magnets and the need for regular maintenance.

To properly maintain of neodymium magnetic rollers, it is recommended regularly cleaning them from deposits, avoiding extreme temperatures up to 80°C, 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 leaky, the magnets inside can rust and weaken. Magnetic field measurements 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.

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 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.

In addition to their pulling strength, neodymium magnets provide the following advantages:

They virtually do not lose strength, because even after ten years, the performance loss is only ~1% (according to literature),
They show strong resistance to demagnetization from outside magnetic sources,
Because of the brilliant layer of silver, the component looks visually appealing,
The outer field strength of the magnet shows elevated magnetic properties,
With the right combination of materials, they reach significant thermal stability, enabling operation at or above 230°C (depending on the design),
The ability for custom shaping or adjustment to custom needs – neodymium magnets can be manufactured in many forms and dimensions, which amplifies their functionality across industries,
Significant impact in modern technologies – they serve a purpose in HDDs, electric motors, medical equipment or even sophisticated instruments,
Thanks to their power density, small magnets offer high magnetic performance, with minimal size,

Disadvantages of magnetic elements:

They are fragile when subjected to a heavy impact. If the magnets are exposed to physical collisions, it is suggested to place them in a steel housing. The steel housing, in the form of a holder, protects the magnet from cracks , and at the same time strengthens its overall resistance,
They lose power at elevated temperatures. Most neodymium magnets experience permanent loss in strength when heated above 80°C (depending on the form and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
Magnets exposed to damp air can oxidize. Therefore, for outdoor applications, we recommend waterproof types made of non-metallic composites,
Limited ability to create complex details in the magnet – the use of a external casing is recommended,
Potential hazard due to small fragments may arise, in case of ingestion, which is important in the protection of children. Moreover, small elements from these assemblies have the potential to complicate medical imaging after being swallowed,
Due to a complex production process, their cost is considerably higher,

Optimal lifting capacity of a neodymium magnet – what contributes to it?

The given lifting capacity of the magnet means the maximum lifting force, determined in the best circumstances, specifically:

with mild steel, used as a magnetic flux conductor
with a thickness of minimum 10 mm
with a refined outer layer
with zero air gap
under perpendicular detachment force
in normal thermal conditions

Lifting capacity in real conditions – factors

In practice, the holding capacity of a magnet is affected by the following aspects, arranged from the most important to the least relevant:

Air gap between the magnet and the plate, as even a very small distance (e.g. 0.5 mm) can cause a drop in lifting force of up to 50%.
Direction of applied force, because the maximum lifting capacity is achieved under perpendicular application. The force required to slide the magnet along the plate is usually several times lower.
Thickness of the plate, as a plate that is too thin causes part of the magnetic flux not to be used and to remain wasted in the air.
Material of the plate, because higher carbon content lowers holding force, while higher iron content increases it. The best choice is steel with high magnetic permeability and high saturation induction.
Surface of the plate, because the more smooth and polished it is, the better the contact and consequently the greater the magnetic saturation.
Operating temperature, since all permanent magnets have a negative temperature coefficient. This means that at high temperatures they are weaker, while at sub-zero temperatures they become slightly stronger.

* Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the holding force is lower. Additionally, even a small distance {between} the magnet and the plate decreases the lifting capacity.

Safety Precautions

Neodymium magnets can become demagnetized at high temperatures.

While 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.

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.

Make sure not to bring neodymium magnets close to the TV, wallet, and computer HDD.

Neodymium magnets generate strong magnetic fields that can destroy 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. Remember not to place neodymium magnets close to these electronic devices.

Dust and powder from neodymium magnets are highly flammable.

Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. If the magnet is crushed into fine powder or dust, it becomes highly flammable.

Neodymium magnets should not be in the vicinity youngest children.

Not all neodymium magnets are toys, so do not let children play with them. 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.

Magnets made of neodymium are extremely fragile, they easily crack and can crumble.

Neodymium magnets are characterized by considerable fragility. 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 collision between the magnets, small metal fragments can be dispersed in different directions.

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

Make sure to review all the information we have provided. This will help you avoid harm to your body and damage to the magnets.

People with pacemakers are advised to avoid neodymium magnets.

In the case of neodymium magnets, there is a strong magnetic field. As a result, it interferes 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.

Keep neodymium magnets as far away as possible from GPS and smartphones.

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.

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 the joining of neodymium magnets is not controlled, at that time they may crumble and also crack. You can't approach them to each other. At a distance less than 10 cm you should have them extremely firmly.

Warning!

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