← previous

Product available shipping tomorrow

SM 32x500 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130374

GTIN: 5906301813224

Diameter Ø [±0,1 mm]

32 mm

Height [±0,1 mm]

500 mm

Weight

2670 g

1488.30 ZŁ with VAT / pcs + price for transport

1210.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

1210.00 ZŁ

1488.30 ZŁ

price from 5 pcs

1089.00 ZŁ

1339.47 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Need advice?

Give us a call +48 888 99 98 98 alternatively send us a note by means of request form the contact section.
Strength as well as form of neodymium magnets can be checked with our magnetic mass calculator.

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

SM 32x500 [2xM8] / N42 - magnetic separator

Specification/characteristics SM 32x500 [2xM8] / N42 - magnetic separator

properties

values

Cat. no.

130374

GTIN

5906301813224

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

32 mm [±0,1 mm]

Height

500 mm [±0,1 mm]

Weight

2670 g [±0,1 mm]

Manufacturing Tolerance

± 0.1 mm

Magnetic properties of material N42

properties

values

units

remenance Br [Min. - Max.] ?

12.9-13.2

kGs

remenance Br [Min. - Max.] ?

1290-1320

coercivity bHc ?

10.8-12.0

kOe

coercivity bHc ?

860-955

kA/m

actual internal force iHc

≥ 12

kOe

actual internal force iHc

≥ 955

kA/m

energy density [Min. - Max.] ?

40-42

BH max MGOe

energy density [Min. - Max.] ?

318-334

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

Shopping tips

Product available wysyłka jutro!

UMC 60x9/5x15 / N38 - cylindrical magnetic holder

64.94 ZŁ / pcs

Product available wysyłka jutro!

UMS 20x8.6x4.5x7 / N38 - conical magnetic holder

6.46 ZŁ / pcs

Product available wysyłka jutro!

MP 12x8/4x3 / N38 - ring magnet

1.427 ZŁ / pcs

Product available wysyłka jutro!

AM ucho [M8] - magnetic accessories

4.92 ZŁ / pcs

The device rod magnetic is based on the use of neodymium magnets, which are welded in a construction made of stainless steel mostly AISI304. Due to this, it is possible to effectively segregate ferromagnetic particles from other materials. A fundamental component of its operation is the repulsion of N and S poles of neodymium magnets, which allows magnetic substances to be targeted. The thickness of the embedded magnet and its structure pitch determine the range and strength of the separator's operation.

Generally speaking, magnetic separators are used to extract ferromagnetic elements. 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 food production for the elimination of metallic contaminants, such as iron fragments or iron dust. Our rollers are constructed from acid-resistant steel, EN 1.4301, approved for contact with food.

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

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

Both ends of the magnetic bar will be with M8 threaded holes - 18 mm, enabling simple mounting 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 as well as N52.

Generally it is believed that the stronger the magnet, the more effective. However, 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.

In the case where the magnet is thin, the magnetic force lines are more compressed. By contrast, when the magnet is thick, the force lines will be 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 saltwater contact, AISI 316 steel exhibits the best resistance due to its exceptional anti-corrosion properties.

Magnetic bars are characterized by their specific arrangement of poles and their ability to attract magnetic substances directly onto their surface, as opposed to other separators that often use more complicated filtration systems.

Technical designations and terms related to magnetic separators include amongst others magnet pitch, polarity, and magnetic induction, 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 suggest recycling that doesn't meet the standard - they are not suitable.

Neodymium magnetic bars offer many advantages, including a very strong magnetic field, the ability to capture even the tiniest metal particles, 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, you should cleaning after each use, avoiding temperatures above 80 degrees. The rollers our rollers have waterproofing IP67, so if they are not sealed, the magnets inside can oxidize and lose their power. Magnetic field measurements is recommended be carried out once every 24 months. Caution should be taken during use, 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 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.

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 the removal of iron metals and iron filings is essential.

Advantages and disadvantages of neodymium magnets NdFeB.

In addition to their immense magnetic power, neodymium magnets offer the following advantages:

Their strength is maintained, and after around 10 years, it drops only by ~1% (theoretically),
They show strong resistance to demagnetization from outside magnetic sources,
By applying a reflective layer of gold, the element gains a modern look,
They exhibit superior levels of magnetic induction near the outer area of the magnet,
These magnets tolerate elevated temperatures, often exceeding 230°C, when properly designed (in relation to form),
Thanks to the possibility in shaping and the capability to adapt to specific requirements, neodymium magnets can be created in diverse shapes and sizes, which broadens their functional possibilities,
Wide application in advanced technical fields – they are utilized in HDDs, electromechanical systems, medical equipment as well as high-tech tools,
Thanks to their efficiency per volume, small magnets offer high magnetic performance, in miniature format,

Disadvantages of rare earth magnets:

They may fracture when subjected to a powerful 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 breakage , and at the same time enhances its overall durability,
High temperatures may significantly reduce the magnetic power of neodymium magnets. Typically, above 80°C, they experience permanent weakening in performance (depending on shape). To prevent this, we offer heat-resistant magnets marked [AH], capable of working up to 230°C, which makes them perfect for high-temperature use,
Due to corrosion risk in humid conditions, it is advisable to use sealed magnets made of synthetic coating for outdoor use,
The use of a protective casing or external holder is recommended, since machining fine details in neodymium magnets is difficult,
Potential hazard due to small fragments may arise, when consumed by mistake, which is notable in the health of young users. Additionally, miniature parts from these assemblies can interfere with diagnostics once in the system,
Due to a complex production process, their cost is considerably higher,

Maximum magnetic pulling force – what affects it?

The given lifting capacity of the magnet means the maximum lifting force, measured under optimal conditions, namely:

using a steel plate with low carbon content, acting as a magnetic circuit closure
of a thickness of at least 10 mm
with a polished side
with zero air gap
in a perpendicular direction of force
under standard ambient temperature

Lifting capacity in real conditions – factors

Practical lifting force is dependent on elements, by priority:

Air gap between the magnet and the plate, since 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.

* Lifting capacity was assessed by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a slight gap {between} the magnet and the plate reduces the holding force.

Exercise Caution with Neodymium Magnets

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.

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.

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

Neodymium magnets are a source of intense magnetic fields that cause interference with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.

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

Read the information on our website on how to properly utilize neodymium magnets and avoid significant harm to your body and unintentional disruption to the magnets.

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

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

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

Strong magnetic fields emitted by neodymium magnets can destroy magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other devices. They can also damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic devices.

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

Magnets made of neodymium are delicate as well as can easily break as well as shatter.

In the event of a collision between two neodymium magnets, it can result in them getting chipped. Despite being made of metal as well as 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 become demagnetized at high temperatures.

Even though magnets have been found to maintain their efficacy up to temperatures of 80°C or 175°F, it's essential to consider that this threshold may fluctuate depending on the magnet's type, configuration, and intended usage.

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. 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.

Exercise caution!

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