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SM 32x150 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130297

GTIN: 5906301812906

5

Diameter Ø [±0,1 mm]

32 mm

Height [±0,1 mm]

150 mm

Weight

804 g

455.10 with VAT / pcs + price for transport

370.00 ZŁ net + 23% VAT / pcs

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SM 32x150 [2xM8] / N42 - magnetic separator

Specification/characteristics SM 32x150 [2xM8] / N42 - magnetic separator
properties
values
Cat. no.
130297
GTIN
5906301812906
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
32 mm [±0,1 mm]
Height
150 mm [±0,1 mm]
Weight
804 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
T
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
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 magnetic rod is the basic building block of grate separators. It is used for cleaning bulk products (flour, sugar, granules) and liquids (oils, juices). High magnetic induction allows catching the finest iron particles.
The rod consists of a casing tube made of acid-resistant steel (AISI 304/316). The center is filled with NdFeB magnets arranged to maximize the field on the surface. Thanks to this, the rod is durable and hygienic.
Metal impurities are strongly attracted, making manual removal difficult. We recommend taping the filings and peeling them off together. In industry, cover tubes (Easy Clean) are used, from which the magnet is slid out.
The more Gauss, the smaller and weakly magnetic particles will be caught. For basic iron protection, standard power is enough. High induction is required when contaminants are microscopic.
We can produce a rod with any mounting end. We offer various tip options: threaded holes (e.g., M8, M10), protruding screws, flat studs, or handles. We ensure fast execution of special orders.

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to their magnetic capacity, neodymium magnets provide the following advantages:

  • They have constant strength, and over nearly ten years their attraction force decreases symbolically – ~1% (in testing),
  • They show superior resistance to demagnetization from outside magnetic sources,
  • By applying a shiny layer of gold, the element gains a modern look,
  • The outer field strength of the magnet shows remarkable magnetic properties,
  • These magnets tolerate extreme temperatures, often exceeding 230°C, when properly designed (in relation to build),
  • Thanks to the freedom in shaping and the capability to adapt to individual requirements, neodymium magnets can be created in various configurations, which broadens their usage potential,
  • Significant impact in advanced technical fields – they are utilized in computer drives, electric drives, medical equipment and high-tech tools,
  • Thanks to their concentrated strength, small magnets offer high magnetic performance, while occupying minimal space,

Disadvantages of rare earth magnets:

  • They are prone to breaking when subjected to a strong impact. If the magnets are exposed to mechanical hits, we recommend in a protective case. The steel housing, in the form of a holder, protects the magnet from breakage and additionally increases its overall robustness,
  • They lose strength at elevated temperatures. Most neodymium magnets experience permanent degradation in strength when heated above 80°C (depending on the dimensions and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
  • They rust in a humid environment, especially when used outside, we recommend using sealed magnets, such as those made of non-metallic materials,
  • The use of a protective casing or external holder is recommended, since machining threads in neodymium magnets is restricted,
  • Safety concern from tiny pieces may arise, if ingested accidentally, which is notable in the protection of children. Moreover, minuscule fragments from these assemblies can interfere with diagnostics when ingested,
  • In cases of large-volume purchasing, neodymium magnet cost may be a barrier,

Detachment force of the magnet in optimal conditionswhat it depends on?

The given lifting capacity of the magnet means the maximum lifting force, measured in a perfect environment, that is:

  • using a steel plate with low carbon content, acting as a magnetic circuit closure
  • of a thickness of at least 10 mm
  • with a refined outer layer
  • with no separation
  • under perpendicular detachment force
  • under standard ambient temperature

Lifting capacity in practice – influencing factors

Practical lifting force is determined by elements, listed from the most critical to the less significant:

  • 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 optimal thickness, under perpendicular forces, in contrast under shearing force the holding force is lower. Additionally, even a slight gap {between} the magnet and the plate lowers the holding force.

Handle with Care: Neodymium Magnets

Neodymium magnetic are especially delicate, which leads to their breakage.

Neodymium magnets are highly fragile, and by joining them in an uncontrolled manner, they will crumble. 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.

Do not place neodymium magnets near a computer HDD, TV, and wallet.

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. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic devices.

 It is essential to maintain neodymium magnets out of reach from children.

Neodymium magnets are not toys. You cannot allow them to become toys for children. In such a situation, surgery is necessary to remove them. In the worst case scenario, it can result in death.

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 bounce and contact together within a distance of several to almost 10 cm from each other.

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.

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.

Despite the fact that magnets have been observed 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.

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, you can try wearing gloves or simply avoid direct contact with nickel-plated neodymium magnets.

Neodymium magnets are the strongest magnets ever invented. Their strength can shock you.

To handle magnets properly, it is best to familiarize yourself with our information beforehand. This will help you avoid significant harm to your body and the magnets themselves.

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.

Exercise caution!

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

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e-mail: bok@dhit.pl

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