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neodymium magnets

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Product available shipping tomorrow!

SM 32x500 [2xM8] / N52 - magnetic roller

magnetic separator

catalog number 130467

GTIN: 5906301813385

5.0

diameter Ø

32 mm [±0,1 mm]

height

500 mm [±0,1 mm]

max. temperature

≤ 80 °C

1562.10 PLN gross price (including VAT) / pcs +

1270.00 PLN net price + 23% VAT / pcs

bulk discounts:

need more quantity?
price from 1 pcs
1270.00 PLN
1562.10 PLN
price from 2 pcs
1206.50 PLN
1483.99 PLN
price from 4 pcs
1143.00 PLN
1405.89 PLN

Want to bargain?

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

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

Specification: magnetic separator 32x500 [2xM8] / N52

Characteristics: magnetic separator 32x500 [2xM8] / N52
Properties
Values
catalog number
130467
GTIN
5906301813385
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]
max. temperature ?
≤ 80 °C
weight
2770.00 g
execution tolerance
± 0.1 mm
rodzaj materiału
AISI 304 - bezpieczna dla żywności
rodzaj magnesów
NdFeB N52
ilość gwintów
2x [M8] wewnętrzne
biegunowość
obwodowa - 19 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 magnetic separator, namely the magnetic roller, uses the power of neodymium magnets, which are embedded in a casing made of stainless steel usually AISI304. Due to this, it is possible to effectively remove ferromagnetic particles from the mixture. A fundamental component of its operation is the use of repulsion of magnetic poles N and S, which enables magnetic substances to be attracted. The thickness of the magnet and its structure pitch affect the range and strength of the separator's operation.
Generally speaking, magnetic separators are used to segregate 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 separator will not be able to separate them.
Yes, magnetic rollers are used in the food sector to remove metallic contaminants, for example iron fragments or iron dust. Our rollers are constructed from acid-resistant steel, AISI 304, suitable for use in food.
Magnetic rollers, often called cylindrical magnets, find application in food production, metal separation as well as recycling. They help in removing iron dust in the course of the process of separating metals from other materials.
Our magnetic rollers consist of neodymium magnets embedded in a tube made of stainless steel with a wall thickness of 1mm.
Both ends of the magnetic bar will be with M8 threaded openings, allowing for 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 flux density, magnetic force lines and the field of the magnetic field. We produce them in materials, N42 as well as N52.
Usually it is believed that the greater the magnet's power, the more effective. But, 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 use 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, in the case of a thicker magnet, the force lines are extended and extend over a greater distance.
For creating the casings of magnetic separators - rollers, most often stainless steel is utilized, especially types AISI 304, AISI 316, and AISI 316L.
In a saltwater contact, type AISI 316 steel is highly recommended thanks to its outstanding corrosion resistance.
Magnetic rollers stand out for their specific arrangement of poles and their ability to attract magnetic substances directly onto their surface, in contrast to other separators that often use complex filtration systems.
Technical designations and terms pertaining to magnetic separators include among 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 close to the magnetic pole. The result is verified in a value table - the lowest is N30. All designations below N27 or N25 indicate 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. However, some of the downsides may involve the need for regular cleaning, higher cost, and potential installation challenges.
For proper maintenance of neodymium magnetic rollers, it is advised {to clean them regularly from contaminants, avoid extremal temperatures up to 80°C, and protect them from moisture if the threads are not sealed - in our case. The rollers have an IP67 waterproof rating, so if they are not sealed, the magnets inside may rust and weaken. Magnetic field measurements are recommended to be conducted every two years. 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 be worn down, which, in turn, may lead to 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.

Compilation of suggested goods

cylindrical magnet 18x10 / N38 ↑ axial
Product available shipping tomorrow!

cylindrical magnet 18x10 / N38 ↑ axial

7.00 PLN / pcs
conical magnetic holder 16x6.5x3.5x5 / N38
Product available shipping tomorrow!

conical magnetic holder 16x6.5x3.5x5 / N38

3.35 PLN / pcs
magnetic separator 32x200 [2xM8] / N52
Product available shipping tomorrow!

magnetic separator 32x200 [2xM8] / N52

676.50 PLN / pcs
magnetic separator with handle 32x250 / N52
Product available shipping tomorrow!

magnetic separator with handle 32x250 / N52

738.00 PLN / pcs

Advantages and disadvantages of neodymium magnets NdFeB.

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

  • They do not lose strength over time. After approximately 10 years, their strength decreases by only ~1% (theoretically),
  • They are highly resistant to demagnetization by external magnetic field,
  • In other words, thanks to the shiny nickel, gold, or silver finish, the element gains an aesthetic appearance,
  • They have 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...
  • Thanks to the flexibility in shaping or the ability to adapt to specific requirements – neodymium magnets can be produced in various forms and dimensions, which enhances their versatility in applications.
  • Wide application in modern technologies – find application in HDD drives, electric drive mechanisms, medical devices and other advanced devices.

Disadvantages of neodymium magnets:

  • They can break when subjected to a powerful impact. If the magnets are exposed to impacts, we recommend using magnets in a steel housing. The steel housing in the form of a holder protects the magnet from impacts, and at the same time increases its overall strength,
  • They lose strength at high temperatures. Most neodymium magnets experience permanent loss of strength when heated above 80°C (depending on the shape and height). However, we also offer special magnets with high temperature resistance, up to 230°C,
  • Due to their susceptibility to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic, or other moisture-resistant materials when using them outdoors,
  • 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
  • Health risk associated with microscopic parts of magnets pose a threat, when accidentally ingested, which is crucial in the aspect of protecting young children. Additionally, miniscule components of these magnets have the potential to be problematic in medical diagnosis in case of swallowing.

We Recommend Caution with Neodymium Magnets

 Maintain neodymium magnets away 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.

Avoid bringing neodymium magnets close to a phone or GPS.

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 magnetic are highly susceptible to damage, leading to their cracking.

Magnets made of neodymium are extremely delicate, and by joining them in an uncontrolled manner, they will break. Neodymium magnetic are made of metal and coated with a shiny nickel, but they are not as durable 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.

Neodymium magnets are the most powerful magnets ever invented. Their power can surprise you.

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 are not recommended for people with pacemakers.

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.

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

Magnetic 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. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. Avoid placing neodymium magnets in close proximity to electronic devices.

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.

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.

If joining of neodymium magnets is not under control, then they may crumble and crack. Remember not to move them to each other or have them firmly in hands at a distance less than 10 cm.

Neodymium magnets can demagnetize at high temperatures.

Whilst Neodymium magnets can lose their magnetic properties at high temperatures, it's important to note that the extent of this effect can vary based on factors such as the magnet's material, shape, and intended application.

The magnet is coated with nickel - be careful if you have an 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.

To illustrate why neodymium magnets are so dangerous, read the article - How very dangerous are powerful neodymium magnets?.

Dhit sp. z o.o. logo

e-mail: bok@dhit.pl

tel: +48 888 99 98 98