e-mail: bok@dhit.pl

neodymium magnets

We offer yellow color magnets Nd2Fe14B - our proposal. All magnesy neodymowe in our store are in stock for immediate purchase (see the list). See the magnet price list for more details see the magnet price list

Magnet for water searching F200 GOLD

Where to buy very strong neodymium magnet? Holders with magnets in airtight and durable enclosure are excellent for use in difficult, demanding weather conditions, including in the rain and snow see more...

magnetic holders

Holders with magnets can be applied to enhance manufacturing, exploring underwater areas, or locating meteors from gold see more...

Shipping is shipped on the day of purchase before 2:00 PM on weekdays.

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Product available shipping tomorrow!

SM 32x200 [2xM8] / N52 - magnetic roller

magnetic separator

catalog number 130360

GTIN: 5906301813088

5.0

diameter Ø

32 mm [±0,1 mm]

height

200 mm [±0,1 mm]

max. temperature

≤ 80 °C

676.50 PLN gross price (including VAT) / pcs +

550.00 PLN net price + 23% VAT / pcs

bulk discounts:

need more quantity?

price from 1 pcs
550.00 PLN
676.50 PLN
price from 4 pcs
522.50 PLN
642.67 PLN
price from 8 pcs
495.00 PLN
608.85 PLN

Don't know what to buy?

Call us tel: +48 888 99 98 98 or write via contact form on our website. You can check the strength as well as the shape 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 32x200 [2xM8] / N52

Characteristics: magnetic separator 32x200 [2xM8] / N52
Properties
Values
catalog number
130360
production / distribution
Dhit sp. z o.o.
country of origin
Poland / China / Germany
customs code
85059029
diameter Ø
32 mm [±0,1 mm]
height
200 mm [±0,1 mm]
max. temperature ?
≤ 80 °C
weight
1100.00 g
execution tolerance
± 0.1 mm
rodzaj materiału
AISI 304 - bezpieczna dla żywności
rodzaj magnesów
NdFeB N52
ilość gwintów
2x [M8] wewnętrzne
biegunowość
obwodowa - 7 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 mostly AISI304. Due to this, it is possible to efficiently separate ferromagnetic elements from other materials. A fundamental component of its operation is the use of repulsion of magnetic poles N and S, which causes magnetic substances to be targeted. The thickness of the magnet and its structure pitch determine the range and strength of the separator's operation.
Generally speaking, magnetic separators are designed to segregate ferromagnetic elements. If the cans are made from ferromagnetic materials, a magnetic separator will be effective. However, if the cans are made of non-ferromagnetic materials, such as aluminum, the magnetic separator will not be effective.
Yes, magnetic rollers are employed in food production for the elimination of metallic contaminants, for example iron fragments or iron dust. Our rods are constructed from acid-resistant steel, AISI 304, approved for contact with food.
Magnetic rollers, often called magnetic separators, find application in metal separation, food production as well as recycling. They help in extracting iron dust in the course of the process of separating metals from other materials.
Our magnetic rollers are built with neodymium magnets embedded in a tube of stainless steel with a wall thickness of 1mm.
From both sides of the magnetic bar can be with M8 threaded holes - 18 mm, which enables 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 magnetic force lines, flux density 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. 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 application and specific needs. The standard operating temperature of a magnetic bar is 80°C.
When the magnet is thin, the magnetic force lines are short. 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, frequently stainless steel is employed, especially types AISI 304, AISI 316, and AISI 316L.
In a saltwater environment, type AISI 316 steel is highly recommended thanks to its outstanding anti-corrosion properties.
Magnetic rollers stand out for their unique configuration of poles and their capability to attract magnetic particles directly onto their surface, as opposed to other devices that may utilize more complicated filtration systems.
Technical designations and terms related to magnetic separators comprise among others magnet pitch, polarity, and magnetic induction, 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 verified in a value table - the lowest is N30. All designations below N27 or N25 suggest recycling that falls below the standard - they are not suitable.
Neodymium magnetic bars offer a range of benefits such as 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 recommended {to clean them regularly from deposits, avoid extreme temperatures up to 80°C, 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 oxidize and lose their strength. Magnetic field measurements are recommended to be conducted every two years. Care should be taken 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, can result in 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.

Shopping tips

Advantages and disadvantages of neodymium magnets NdFeB.

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

  • They do not lose power over time. After 10 years, their strength decreases by only ~1% (theoretically),
  • They are exceptionally resistant to demagnetization caused by an external magnetic field,
  • 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 shape) even at temperatures up to 230°C and above...
  • Thanks to the flexibility in shaping and 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.
  • Wide application in modern technologies – are utilized in hard drives, electric motors, medical devices or 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,
  • 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,
  • They rust in a humid environment - during outdoor use, we recommend using waterproof magnets, such as those made of rubber or plastic,
  • Limited ability to create threads or complex shapes in the magnet - the use of a housing is recommended - magnetic holder
  • Health risk associated with microscopic parts of magnets pose a threat, when accidentally ingested, which becomes significant in the aspect of protecting young children. Furthermore, tiny parts of these magnets are able to complicate diagnosis when they are in the body.

Caution with Neodymium Magnets

Neodymium magnets are not recommended for people with pacemakers.

In the case of neodymium magnets, there is a strong magnetic field. As a result, it interferes with the operation of a heart pacemaker. However, if the magnetic field does not affect the device, it can damage its components or deactivate the device when it is in a magnetic field.

Never bring neodymium magnets close to a phone and GPS.

Magnetic fields interfere with compasses and magnetometers used in navigation for air and sea transport, as well as internal compasses of smartphones and GPS devices.

Comparing neodymium magnets to ferrite magnets (found in speakers), they are 10 times stronger, and their power can shock you.

On our website, you can find information on how to use neodymium magnets. This will help you avoid injuries and prevent damage to the magnets.

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 will crack or crumble with uncontrolled joining to each other. Remember not to move them to each other or hold them firmly in hands at a distance less than 10 cm.

The magnet is coated with nickel. Therefore, exercise caution if you have an 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.

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.

Dust and powder from neodymium magnets are flammable.

Avoid drilling or mechanical processing of neodymium magnets. If the magnet is crushed into fine powder or dust, it becomes highly flammable.

  Neodymium magnets should not be around children.

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.

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

Magnets made of neodymium are fragile as well as can easily break as well as get damaged.

Neodymium magnetic are fragile and will crack if allowed to collide with each other, even from a distance of a few centimeters. They are coated with a shiny nickel plating similar to steel, but they are not as hard. At the moment of collision between the magnets, small sharp metal fragments can be propelled in various directions at high speed. Eye protection is recommended.

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

Dhit sp. z o.o. logo

e-mail: bok@dhit.pl

tel: +48 888 99 98 98