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Product available shipping tomorrow!

SM 32x475 [2xM8] / N42 - magnetic roller

magnetic separator

catalog number 130377

GTIN: 5906301813255

no reviews

diameter Ø

32 mm [±0,1 mm]

height

475 mm [±0,1 mm]

max. temperature

≤ 80 °C

1414.50 PLN gross price (including VAT) / pcs +

1150.00 PLN net price + 23% VAT / pcs

bulk discounts:

need more quantity?
price from 1 pcs
1150.00 PLN
1414.50 PLN
price from 2 pcs
1092.50 PLN
1343.78 PLN
price from 4 pcs
1035.00 PLN
1273.05 PLN

Do you have a problem in choosing?

Give us a call tel: +48 888 99 98 98 or write through contact form on the contact page. You can check the strength and the appearance of neodymium magnet in our power calculator force calculator

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

Specification: magnetic separator 32x475 [2xM8] / N42

Characteristics: magnetic separator 32x475 [2xM8] / N42
Properties
Values
catalog number
130377
GTIN
5906301813255
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
2545.00 g
execution tolerance
± 0.1 mm
rodzaj materiału
AISI 304 - bezpieczna dla żywności
rodzaj magnesów
NdFeB N42
ilość gwintów
2x [M8] wewnętrzne
biegunowość
obwodowa - 18 nadbiegunników
indukcja magnetyczna
~ 8 000 Gauss [±5%]
max. temp. pracy
poniżej ≤ 80°C
grubość rury osłonowej
1 mm

Magnetic properties of the material N42

material characteristics 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 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 device rod magnetic is based on the use of neodymium magnets, which are placed in a construction made of stainless steel usually AISI304. Due to this, it is possible to precisely remove ferromagnetic elements from other materials. An important element of its operation is the repulsion of magnetic poles N and S, which allows magnetic substances to be targeted. The thickness of the embedded magnet and its structure's pitch determine the power and range of the separator's operation.
Generally speaking, magnetic separators serve to separate ferromagnetic particles. If the cans are made from ferromagnetic materials, the separator will effectively segregate them. However, if the cans are made of non-ferromagnetic materials, such as aluminum, the separator will not effectively segregate them.
Yes, magnetic rollers are employed in the food sector for the elimination of metallic contaminants, such as iron fragments or iron dust. Our rollers are built from acid-resistant steel, EN 1.4301, approved for use in food.
Magnetic rollers, often called cylindrical magnets, are employed in food production, metal separation as well as waste processing. They help in extracting iron dust in the course of the process of separating metals from other wastes.
Our magnetic rollers consist of neodymium magnets embedded in a stainless steel tube casing of stainless steel with a wall thickness of 1mm.
From both sides of the magnetic bar can be with M8 threaded holes - 18 mm, allowing for 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 magnetic force lines, flux density and the field of the magnetic field. We produce them in two materials, N42 as well as N52.
Usually it is believed that the stronger the magnet, the better. Nevertheless, the effectiveness 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.
In the case where the magnet is more flat, the magnetic force lines are short. Otherwise, in the case of a thicker magnet, the force lines will be longer and reach further.
For making the casings of magnetic separators - rollers, most often stainless steel is utilized, especially types AISI 316, AISI 316L, and AISI 304.
In a saltwater contact, AISI 316 steel exhibits the best resistance thanks to its excellent anti-corrosion properties.
Magnetic bars stand out for their unique configuration of poles and their capability to attract magnetic substances directly onto their surface, in contrast to other devices that may utilize 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 determined 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 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 many advantages, including excellent separation efficiency, strong magnetic field, and durability. Disadvantages may include the need for regular cleaning, higher cost, and potential installation challenges.
To properly maintain of neodymium magnetic rollers, it is advised {to clean them regularly from deposits, avoid extreme temperatures above 80 degrees, and cleaning regularly, avoiding temperatures above 80 degrees. The rollers our rollers have an IP67 waterproof rating, so if they are not sealed, the magnets inside may rust and weaken. Magnetic field measurements are advised to be conducted once every 24 months. Caution should be exercised during use as there is a risk of finger injury. If the protective tube is only 0.5 mm thick, it can wear out, which, in turn, may lead to issues with the magnetic rod becoming unsealed and product contamination. The Roller operating range 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.

Apart from immense power, neodymium magnets have the following advantages:

  • They do not lose their power (of the magnet). After about 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 exhibit very high magnetic induction on the surface of the magnet,
  • By using an appropriate combination of materials, they can achieve significant thermal resistance, allowing them to operate at temperatures up to 230°C and above...
  • Due to the option of accurate forming and adaptation to individual needs – neodymium magnets can be produced in various forms and dimensions, which enhances their versatility in applications.
  • Key role in modern technologies – find application in computer drives, electric drive mechanisms, medical apparatus and various technologically advanced devices.

Disadvantages of neodymium magnets:

  • They are fragile when subjected to a powerful 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 at the same time increases its overall strength,
  • High temperatures can reduce the strength of neodymium magnets. Typically, after heating above 80°C, most of them experience a permanent loss in strength (although it is dependent on the shape and size). To prevent this, we offer special magnets marked with the symbol [AH], which are highly resistant to high temperatures. They can operate even at temperatures up to 230°C, making them an ideal solution for applications requiring high-temperature operation,
  • Due to their susceptibility to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic, or other moisture-resistant materials when using them outdoors,
  • The use of a cover or a magnetic holder is recommended due to the limited possibilities of manufacturing threads or complex shapes in the magnet
  • Potential hazard associated with microscopic parts of magnets pose a threat, in case of ingestion, which is crucial in the context of children's health. It's also worth noting that miniscule components of these products have the potential to be problematic in medical diagnosis after entering the body.

Handle Neodymium Magnets with Caution

Magnets will attract to each other, so remember not to allow them to pinch together without control or place your fingers in their path.

Magnets may crack or alternatively crumble with uncontrolled connecting to each other. You can't move them to each other. At a distance less than 10 cm you should hold them extremely firmly.

  Neodymium magnets should not be in the vicinity youngest children.

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

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

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

Neodymium magnets can demagnetize 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.

Neodymium magnets should not be near people with pacemakers.

Neodymium magnets generate very strong magnetic fields that can interfere with the operation of a pacemaker. This is because many of these devices are equipped with a function that deactivates the device in a magnetic field.

Avoid bringing neodymium magnets close to a phone or 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 are fragile as well as can easily break and shatter.

Neodymium magnets are characterized by significant fragility. Neodymium magnets are made of metal and coated with a shiny nickel surface, but they are not as hard as steel. In the event of a collision between two magnets, there may be a scattering of fragments in different directions. Protecting your eyes is crucial in such a situation.

Dust and powder from neodymium magnets are 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.

You should keep neodymium magnets at a safe distance from the wallet, computer, and TV.

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 destroy devices like video players, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

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

Please read 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

tel: +48 888 99 98 98