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SM 32x425 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130464

GTIN: 5906301813354

0

Diameter Ø [±0,1 mm]

32 mm

Height [±0,1 mm]

425 mm

Weight

2353 g

1340.70 with VAT / pcs + price for transport

1090.00 ZŁ net + 23% VAT / pcs

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SM 32x425 [2xM8] / N52 - magnetic separator

Specification/characteristics SM 32x425 [2xM8] / N52 - magnetic separator
properties
values
Cat. no.
130464
GTIN
5906301813354
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
32 mm [±0,1 mm]
Height
425 mm [±0,1 mm]
Weight
2353 g [±0,1 mm]
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material N52

properties
values
units
remenance Br [Min. - Max.] ?
14.2-14.7
kGs
remenance Br [Min. - Max.] ?
1420-1470
T
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 NdFeB

properties
values
units
Vickers hardness
≥550
Hv
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

The device rod magnetic is based on the use of neodymium magnets, which are embedded in a casing made of stainless steel usually AISI304. In this way, it is possible to precisely segregate ferromagnetic elements from different substances. An important element of its operation is the use of 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 range and strength of the separator's operation.
Generally speaking, magnetic separators are designed 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 separator will not be able to separate them.
Yes, magnetic rollers are used in the food sector to clear metallic contaminants, such as iron fragments or iron dust. Our rods are made from durable acid-resistant steel, AISI 304, approved for use in food.
Magnetic rollers, often called cylindrical magnets, are employed in food production, metal separation as well as recycling. They help in removing iron dust during the process of separating metals from other wastes.
Our magnetic rollers consist of a neodymium magnet embedded in a stainless steel tube casing of stainless steel with a wall thickness of 1mm.
From both sides 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 forces, 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 as well as N52.
Often it is believed that the greater the magnet's power, the more effective. But, the value 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 use and expected needs. The standard operating temperature of a magnetic bar is 80°C.
When the magnet is more flat, the magnetic force lines are short. On the other hand, 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 utilized, especially types AISI 304, AISI 316, and AISI 316L.
In a saltwater environment, type AISI 316 steel exhibits the best resistance due to its exceptional anti-corrosion properties.
Magnetic bars are characterized by their unique configuration of poles and their capability to attract magnetic substances directly onto their surface, as opposed to other devices that often use more complicated filtration systems.
Technical designations and terms pertaining 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 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 below N27 or N25 indicate recycling that falls below the standard - they are not suitable.
Neodymium magnetic rollers offer many advantages, including excellent separation efficiency, strong magnetic field, and durability. However, some of the downsides may involve higher cost compared to other types of magnets and the need for regular maintenance.
For proper maintenance of neodymium magnetic rollers, it’s worth cleaning after each use, avoiding temperatures above 80 degrees. The rollers our rollers have waterproofing IP67, so if they are leaky, the magnets inside can oxidize and lose their power. Magnetic field measurements should be carried out once every 24 months. Care should be taken, as there is a risk 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, used for separating ferromagnetic contaminants from raw materials. They are used in the food industry, recycling, and plastic processing, where metal separation is crucial.

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to their tremendous strength, neodymium magnets offer the following advantages:

  • Their strength is maintained, and after around ten years, it drops only by ~1% (according to research),
  • They show strong resistance to demagnetization from outside magnetic sources,
  • Because of the lustrous layer of silver, the component looks aesthetically refined,
  • They exhibit superior levels of magnetic induction near the outer area of the magnet,
  • These magnets tolerate extreme temperatures, often exceeding 230°C, when properly designed (in relation to form),
  • The ability for custom shaping and customization to individual needs – neodymium magnets can be manufactured in many forms and dimensions, which enhances their versatility in applications,
  • Key role in new technology industries – they are utilized in hard drives, electric motors, healthcare devices as well as technologically developed systems,
  • Relatively small size with high magnetic force – neodymium magnets offer intense magnetic field in tiny dimensions, which makes them useful in small systems

Disadvantages of NdFeB magnets:

  • They can break when subjected to a powerful impact. If the magnets are exposed to physical collisions, it is advisable to use in a metal holder. The steel housing, in the form of a holder, protects the magnet from breakage and enhances its overall robustness,
  • Magnets lose pulling force when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible magnetic decay (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,
  • Due to corrosion risk in humid conditions, it is wise to use sealed magnets made of plastic for outdoor use,
  • Limited ability to create precision features in the magnet – the use of a magnetic holder is recommended,
  • Potential hazard linked to microscopic shards may arise, in case of ingestion, which is crucial in the context of child safety. Furthermore, minuscule fragments from these products might interfere with diagnostics if inside the body,
  • Higher purchase price is one of the drawbacks compared to ceramic magnets, especially in budget-sensitive applications

Detachment force of the magnet in optimal conditionswhat affects it?

The given lifting capacity of the magnet means the maximum lifting force, calculated in ideal conditions, that is:

  • with mild steel, serving as a magnetic flux conductor
  • with a thickness of minimum 10 mm
  • with a polished side
  • in conditions of no clearance
  • with vertical force applied
  • under standard ambient temperature

Practical lifting capacity: influencing factors

In practice, the holding capacity of a magnet is affected by these factors, in descending order of importance:

  • 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 testing was performed on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, however under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance {between} the magnet and the plate lowers the load capacity.

Caution with Neodymium Magnets

Never bring neodymium magnets close to a phone and GPS.

Intense magnetic fields generated by neodymium magnets interfere with compasses and magnetometers used in navigation, as well as internal compasses of smartphones and GPS devices.

Neodymium magnets can become demagnetized 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.

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.

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.

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

Familiarize yourself with our information to correctly handle these magnets and avoid significant injuries to your body and prevent disruption to the magnets.

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

Neodymium magnets generate strong magnetic fields that can damage magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, or other devices. They can also destroy devices like video players, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Neodymium magnetic are known for their fragility, which can cause them to shatter.

In the event of a collision between two neodymium magnets, it can result in them getting chipped. 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 attract to each other due to their immense internal force, causing the skin and other body parts to get pinched and resulting in significant injuries.

In the case of placing a finger in the path of a neodymium magnet, in that situation, a cut or even a fracture may occur.

Avoid contact with neodymium magnets 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 should not be treated as toys. Therefore, it is not recommended for children to have access to them.

Remember that neodymium magnets are not toys. Do not allow children to play with them. In the case of swallowing multiple magnets simultaneously, they can attract to each other through the intestinal walls. In the worst case scenario, this can lead to death.

Be careful!

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

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tel: +48 888 99 98 98