FAQ
Order Status

tel: +48 888 99 98 98

neodymium magnets

We offer blue color magnetic Nd2Fe14B - our store's offer. Practically all "neodymium magnets" in our store are in stock for immediate purchase (see the list). See the magnet pricing for more details see the magnet price list

Magnet for searching F300 GOLD

Where to buy very strong neodymium magnet? Holders with magnets in airtight, solid enclosure are excellent for use in challenging weather conditions, including snow and rain more...

magnetic holders

Holders with magnets can be applied to improve production, underwater discoveries, or searching for meteors from gold see...

Enjoy shipping of your order if the order is placed before 2:00 PM on working days.

Dhit sp. z o.o. logo
0
0.00 PLN
  1. home
  2. magnetic rollers separators
  3. strong, effective magnetic roller sm 32x100 [2xm8] / n52
← previous
next →
Product available shipping tomorrow!

SM 32x100 [2xM8] / N52 - magnetic roller

magnetic separator

catalog number 130356

GTIN: 5906301813040

no reviews

diameter Ø

32 mm [±0,1 mm]

height

100 mm [±0,1 mm]

max. temperature

≤ 80 °C

381.30 PLN gross price (including VAT) / pcs +

310.00 PLN net price + 23% VAT / pcs

bulk discounts:

need more quantity?
price from 1 pcs
310.00 PLN
381.30 PLN
price from 8 pcs
294.50 PLN
362.24 PLN
price from 15 pcs
279.00 PLN
343.17 PLN

Want to bargain?

Call us tel: +48 888 99 98 98 or contact us via form on the contact page. You can check the strength as well as the appearance of neodymium magnets in our magnetic mass calculator magnetic calculator

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

Specification: magnetic separator 32x100 [2xM8] / N52

Characteristics: magnetic separator 32x100 [2xM8] / N52
Properties
Values
catalog number
130356
GTIN
5906301813040
production / distribution
Dhit sp. z o.o.
country of origin
Poland / China / Germany
customs code
85059029
diameter Ø
32 mm [±0,1 mm]
height
100 mm [±0,1 mm]
max. temperature ?
≤ 80 °C
weight
554.00 g
execution tolerance
± 0.1 mm
rodzaj materiału
AISI 304 - bezpieczna dla żywności
rodzaj magnesów
NdFeB N52
ilość gwintów
2x [M8] wewnętrzne
biegunowość
obwodowa - 3 nabiegunniki
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 device rod magnetic is based on the use of neodymium magnets, placed in a construction made of stainless steel usually AISI304. Due to this, it is possible to efficiently segregate ferromagnetic elements from the mixture. A key aspect of its operation is the repulsion of N and S poles of neodymium magnets, which causes magnetic substances to be collected. The thickness of the embedded magnet and its structure pitch determine the range and strength of the separator's operation.
Generally speaking, magnetic separators are used to extract 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 separator will not be able to separate them.
Yes, magnetic rollers find application in the food industry to clear metallic contaminants, such as iron fragments or iron dust. Our rollers are built from acid-resistant steel, EN 1.4301, approved for contact with food.
Magnetic rollers, otherwise magnetic separators, are used in food production, metal separation as well as recycling. They help in eliminating iron dust in the course of the process of separating metals from other materials.
Our magnetic rollers are composed of a neodymium magnet anchored in a stainless steel tube casing of stainless steel with a wall thickness of 1mm.
From both sides of the magnetic bar will be with M8 threaded openings, enabling easy installation in machines or magnetic filter drawers. A "blind" version is also possible in manual separators.
In terms of forces, 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 effective. But, the strength 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 application and specific 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. By contrast, in the case of a thicker magnet, the force lines are longer and reach further.
For constructing the casings of magnetic separators - rollers, usually stainless steel is employed, particularly types AISI 304, AISI 316, and AISI 316L.
In a saltwater environment, AISI 316 steel is recommended due to its outstanding anti-corrosion properties.
Magnetic rollers are characterized by 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 include among others polarity, magnetic induction, magnet pitch, as well as the type of steel used.
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 close to the magnetic pole. The outcome 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 a very strong magnetic field, the ability to capture even the tiniest metal particles, and durability. However, some of the downsides may involve higher cost compared to other types of magnets and the need for regular maintenance.
To properly maintain of neodymium magnetic rollers, it is advised {to clean them regularly from contaminants, avoid extreme temperatures up to 80°C, and washing after each use, 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. Magnetic field measurements are recommended to be conducted once every 24 months. Care should be taken as there is a possibility 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 Roller operating range equals its diameter, fi25mm is approximately 25mm active range, while fi32 is about 40mm.

Choose recommended products

magnetic holder external thread 48x24x11.5 [M8] GZ / N38
Product available shipping tomorrow!

magnetic holder external thread 48x24x11.5 [M8] GZ / N38

59.90 PLN / pcs
board holder 29x38 black / N38
Product available shipping tomorrow!

board holder 29x38 black / N38

6.81 PLN / pcs
magnetic accessories ucho małe [M8]
Product available shipping tomorrow!

magnetic accessories ucho małe [M8]

4.92 PLN / pcs
cylindrical magnet 10x20 / N38 ↑ axial
Product available shipping tomorrow!

cylindrical magnet 10x20 / N38 ↑ axial

6.88 PLN / pcs

Advantages as well as disadvantages of neodymium magnets NdFeB.

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

  • They do not lose strength over time - after 10 years, their power decreases by only ~1% (theoretically),
  • They are highly resistant to demagnetization by external magnetic field,
  • Thanks to the shiny finish and nickel, gold, or silver coating, they have 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...
  • The ability for precise shaping or customization to specific needs – neodymium magnets can be produced in a wide range of shapes and sizes, which enhances their versatility in applications.
  • Wide application in advanced technologically fields – are used in hard drives, electric drive mechanisms, medical devices or other highly developed apparatuses.

Disadvantages of neodymium magnets:

  • They can break as they are extremely fragile 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 simultaneously increases its overall strength,
  • High temperatures can reduce the power of neodymium magnets. Typically, after heating above 80°C, most of them experience a permanent loss in strength (although it is dependent on the form 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,
  • 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 to health from tiny fragments of magnets pose a threat, in case of ingestion, which is particularly important in the aspect of protecting young children. It's also worth noting that miniscule components of these magnets can complicate diagnosis in case of swallowing.

Safety Precautions

Avoid bringing neodymium magnets close to a phone or 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.

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

Dust and powder from neodymium magnets are highly flammable.

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

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

Neodymium magnets are known for being fragile, which can cause them to become damaged.

Neodymium magnets are characterized by significant fragility. Neodymium magnets 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 can demagnetize at high temperatures.

While 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.

Neodymium magnets are among the most powerful magnets on Earth. The surprising force they generate between each other can shock you.

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

Neodymium magnets are primarily characterized by their significant internal force. They attract to each other, and any object that comes in their way will be affected.

If you have a finger between or on the path of attracting magnets, there may be a large cut or a fracture.

Keep neodymium magnets away from people with pacemakers.

Neodymium magnets produce strong magnetic fields that can interfere 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.

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

Neodymium magnets produce strong magnetic fields that can damage 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.

To raise awareness of why neodymium magnets are so dangerous, see the article titled How dangerous are strong neodymium magnets?.

Dhit sp. z o.o. logo

e-mail: bok@dhit.pl

tel: +48 888 99 98 98