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Product available shipping tomorrow!

SM 32x475 [2xM8] / N52 - magnetic roller

magnetic separator

catalog number 130466

GTIN: 5906301813378

no reviews

diameter Ø

32 mm [±0,1 mm]

height

475 mm [±0,1 mm]

max. temperature

≤ 80 °C

1488.30 PLN gross price (including VAT) / pcs +

1210.00 PLN net price + 23% VAT / pcs

bulk discounts:

need more quantity?
price from 1 pcs
1210.00 PLN
1488.30 PLN
price from 2 pcs
1149.50 PLN
1413.88 PLN
price from 4 pcs
1089.00 PLN
1339.47 PLN

Don't know what to buy?

Give us a call tel: +48 22 499 98 98 or write via contact form on our website. You can check the mass and the appearance of neodymium magnets in our force calculator magnetic calculator

Orders placed by 2:00 PM will be shipped on the same business day.

Specification: magnetic separator 32x475 [2xM8] / N52

Characteristics: magnetic separator 32x475 [2xM8] / N52
Properties
Values
catalog number
130466
GTIN
5906301813378
production / distribution
Dhit sp. z o.o.
country of origin
Poland / China / Germany
customs code
85059029
diameter Ø
32 mm [±0,1 mm]
height
475 mm [±0,1 mm]
max. temperature ?
≤ 80 °C
weight
2630.00 g
execution tolerance
± 0.1 mm
rodzaj materiału
AISI 304 - bezpieczna dla żywności
rodzaj magnesów
NdFeB N52
ilość gwintów
2x [M8] wewnętrzne
biegunowość
obwodowa - 18 nadbiegunników
indukcja magnetyczna
~ 10 000 Gauss [±5%]
max. temp. pracy
poniżej ≤ 80°C
grubość rury osłonowej
1 mm

Magnetic properties of the material N52

material characteristics 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 sintered neodymium magnets Nd2Fe14B

Physical properties of sintered neodymium magnets Nd2Fe14B
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
The main mechanism of the magnetic separator is the use of neodymium magnets, placed in a casing made of stainless steel usually AISI304. Due to this, it is possible to effectively remove ferromagnetic particles from the mixture. A key aspect 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's pitch affect the power and range of the separator's operation.
Generally speaking, magnetic separators are used to separate ferromagnetic particles. 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 find application in the food industry to clear metallic contaminants, such as iron fragments or iron dust. Our rollers are constructed from durable acid-resistant steel, EN 1.4301, suitable for use in food.
Magnetic rollers, otherwise cylindrical magnets, are used in metal separation, food production as well as waste processing. They help in eliminating iron dust during the process of separating metals from other wastes.
Our magnetic rollers are built with neodymium magnets embedded in a stainless steel tube cylinder made of stainless steel with a wall thickness of 1mm.
Both ends of the magnetic bar can be with M8 threaded openings, allowing for 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 flux density, magnetic force lines and the area of operation of the magnetic field. We produce them in materials, N42 and N52.
Generally it is believed that the greater the magnet's power, the more efficient it is. However, the value of the magnet's power is dependent 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 thin, the magnetic force lines are more compressed. By contrast, when the magnet is thick, the force lines are extended and extend over a greater distance.
For constructing the casings of magnetic separators - rollers, frequently stainless steel is used, particularly types AISI 304, AISI 316, and AISI 316L.
In a saltwater contact, type AISI 316 steel is recommended thanks to its excellent corrosion resistance.
Magnetic rollers are characterized by their specific arrangement of poles and their ability to attract magnetic substances directly onto their surface, as opposed to other devices that may utilize more complicated filtration systems.
Technical designations and terms pertaining to magnetic separators comprise amongst others polarity, magnetic induction, magnet pitch, as well as the steel type applied.
Magnetic induction for a roller is determined using a teslameter or a gaussmeter with a flat Hall-effect probe, aiming to find 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 falls below the standard - they are not suitable.
Neodymium magnetic rollers offer many advantages, including a very strong magnetic field, the ability to capture even the tiniest metal particles, and durability. On the other hand, among the drawbacks, one can mention the need for regular cleaning, higher cost, and potential installation challenges.
To properly maintain of neodymium magnetic rollers, it is suggested {to clean them regularly from contaminants, avoid extremal temperatures up to 80°C, and to clean them regularly, avoiding temperatures above 80 degrees. The rollers have an IP67 waterproof rating, so if they are not watertight, the magnets inside may oxidize and weaken. Roller inspections are suggested to be conducted 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 can be worn down, which, in turn, can result in issues with the magnetic rod becoming unsealed and product contamination. The effective operating range of the roller equals its diameter, fi25mm is approximately 25mm active range, while fi32 is about 40mm.

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Advantages and disadvantages of neodymium magnets NdFeB.

In addition to immense power, neodymium magnets have the following advantages:

  • They do not lose their power (of the magnet). After approximately 10 years, their power decreases by only ~1% (theoretically),
  • They are highly resistant to demagnetization by external magnetic sources,
  • In other words, thanks to the shiny coating of nickel, gold, or silver, the element acquires an aesthetic appearance,
  • They have very 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 many variants of shapes and sizes, which enhances their versatility in applications.
  • Significant importance in modern technologies – find application in computer drives, electric motors, medical apparatus and 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, we recommend using magnets in a protective case. The steel housing in the form of a holder protects the magnet from impacts and simultaneously increases its overall strength,
  • Magnets lose their power due to exposure to high temperatures. In most cases, when the temperature exceeds 80°C, these magnets experience permanent reduction in strength (although it is worth noting that this is dependent on the form and size of the magnet). To avoid this problem, we offer special magnets marked with the [AH] symbol, which exhibit high temperature resistance. They can operate even at temperatures as high as 230°C or more,
  • Magnets exposed to a humid environment can corrode. Therefore, when using them outdoors, we recommend using waterproof magnets made of rubber, plastic, or other moisture-resistant materials,
  • The use of a cover - a magnetic holder is recommended due to the limited production capabilities of creating threads or complex shapes in the magnet
  • Possible danger associated with microscopic parts of magnets pose a threat, if swallowed, which is crucial in the context of children's health. It's also worth noting that small elements of these products can complicate diagnosis after entering the body.

Precautions

Keep neodymium magnets away from people with pacemakers.

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.

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

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. They can also damage televisions, VCRs, computer monitors, and CRT displays. Avoid placing neodymium magnets in close proximity to electronic devices.

Neodymium magnetic are delicate as well as can easily break as well as shatter.

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 connection between the magnets, small metal fragments can be dispersed in different directions.

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 jump and touch together within a distance of several to around 10 cm from each other.

Dust and powder from neodymium magnets are highly flammable.

Avoid drilling or mechanical processing of neodymium magnets. Once crushed into fine powder or dust, this material becomes highly flammable.

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

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

The magnet coating contains nickel, so be cautious 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, you can try wearing gloves or simply avoid direct contact with nickel-plated neodymium magnets.

Never bring neodymium magnets close to a phone and GPS.

Magnetic fields can interfere with compasses and magnetometers used in aviation and maritime navigation, as well as internal compasses of smartphones and GPS devices. There are neodymium magnets in every smartphone, for example, in the microphone and speakers.

Neodymium magnets can demagnetize 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.

  Neodymium magnets should not be in the vicinity youngest children.

Neodymium magnets are not toys. Do not allow children to play with them. Small magnets can pose a serious choking hazard. If multiple magnets are swallowed, they can attract to each other through the intestinal walls, causing significant injuries, and even death.

In order to show why neodymium magnets are so dangerous, see the article - How very dangerous are very strong neodymium magnets?.

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e-mail: bok@dhit.pl

tel: +48 888 99 98 98