← previous

Product available shipping tomorrow

SM 32x125 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130352

GTIN: 5906301813002

Diameter Ø [±0,1 mm]

32 mm

Height [±0,1 mm]

125 mm

Weight

670 g

381.30 ZŁ with VAT / pcs + price for transport

310.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

310.00 ZŁ

381.30 ZŁ

price from 9 pcs

294.50 ZŁ

362.24 ZŁ

price from 15 pcs

279.00 ZŁ

343.17 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure about your choice?

Call us now +48 888 99 98 98 if you prefer let us know via our online form our website.
Strength as well as appearance of a neodymium magnet can be tested on our our magnetic calculator.

Orders submitted before 14:00 will be dispatched today!

SM 32x125 [2xM8] / N42 - magnetic separator

Specification/characteristics SM 32x125 [2xM8] / N42 - magnetic separator

properties

values

Cat. no.

130352

GTIN

5906301813002

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

32 mm [±0,1 mm]

Height

125 mm [±0,1 mm]

Weight

670 g [±0,1 mm]

Manufacturing Tolerance

± 0.1 mm

Magnetic properties of material N42

properties

values

units

coercivity bHc ?

860-955

kA/m

coercivity bHc ?

10.8-12.0

kOe

energy density [Min. - Max.] ?

318-334

BH max KJ/m

energy density [Min. - Max.] ?

40-42

BH max MGOe

remenance Br [Min. - Max.] ?

12.9-13.2

kGs

remenance Br [Min. - Max.] ?

1290-1320

actual internal force iHc

≥ 955

kA/m

actual internal force iHc

≥ 12

kOe

max. temperature ?

≤ 80

°C

Physical properties of NdFeB

properties

values

units

Vickers hardness

≥550

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

Shopping tips

Produkt dostępny wysyłka jutro!

MW 25x5 / N38AH - cylindrical magnet

6.84 ZŁ / pcs

Produkt dostępny wysyłka jutro!

MPL 25x15x2 / N38 - lamellar magnet

2.39 ZŁ / pcs

Produkt dostępny wysyłka jutro!

UMH 42x9x46 [M6] / N38 - magnetic holder with hook

35.99 ZŁ / pcs

Produkt dostępny wysyłka jutro!

MP 5x2.7/1.2x5 C / N38 - ring magnet

0.84 ZŁ / pcs

The device rod magnetic is based on the use of neodymium magnets, which are placed in a construction made of stainless steel mostly AISI304. As a result, it is possible to precisely remove ferromagnetic elements from other materials. A key aspect of its operation is the use of repulsion of N and S poles of neodymium magnets, which causes magnetic substances to be targeted. The thickness of the 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 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 find application in the food sector for the elimination of metallic contaminants, for example iron fragments or iron dust. Our rods are built from durable acid-resistant steel, AISI 304, suitable for use in food.

Magnetic rollers, often called magnetic separators, are used in food production, metal separation as well as waste processing. They help in eliminating iron dust in the course of the process of separating metals from other wastes.

Our magnetic rollers are built with a neodymium magnet embedded in a tube made of stainless steel with a wall thickness of 1mm.

From both sides of the magnetic bar can be with M8 threaded openings, enabling quick installation 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 magnetic force lines, flux density and the area of operation of the magnetic field. We produce them in materials, N42 and N52.

Often it is believed that the greater the magnet's power, the more efficient it is. However, the strength of the magnet's power depends 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 specific needs. The standard operating temperature of a magnetic bar is 80°C.

If the magnet is thin, the magnetic force lines are short. Otherwise, in the case of a thicker magnet, the force lines are longer and extend over a greater distance.

For creating the casings of magnetic separators - rollers, frequently stainless steel is utilized, especially types AISI 304, AISI 316, and AISI 316L.

In a saltwater contact, AISI 316 steel exhibits the best resistance due to its outstanding corrosion resistance.

Magnetic bars stand out for their specific arrangement of poles and their ability to attract magnetic particles directly onto their surface, as opposed to other separators that often use more complicated 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, seeking the highest magnetic field value close to the magnetic pole. The result is checked 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 rollers 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, you should regularly cleaning them from contaminants, avoiding high temperatures up to 80°C, and protecting them from moisture if the threads are not sealed – in ours, they are. The rollers feature waterproofing IP67, so if they are leaky, the magnets inside can rust and lose their power. Testing of the rollers should be carried out every two years. Care should be taken, as it’s possible getting pinched. If the protective tube is only 0.5 mm thick, it may wear out, which in turn could cause problems with the magnetic rod seal and product contamination. The effective range of the roller corresponds to its diameter: fi25mm gives an active range of about 25mm, while fi32 gives an active range of about 40mm.

Magnetic rollers are cylindrical neodymium magnets placed in a casing made of corrosion-resistant stainless steel, used for separating ferromagnetic contaminants from raw materials. They are applied in industries such as food processing, ceramics, and recycling, where metal separation is crucial.

Advantages and disadvantages of neodymium magnets NdFeB.

Apart from their superior power, neodymium magnets have these key benefits:

They retain their attractive force for around ten years – the drop is just ~1% (according to analyses),
They remain magnetized despite exposure to magnetic noise,
In other words, due to the glossy gold coating, the magnet obtains an stylish appearance,
They possess strong magnetic force measurable at the magnet’s surface,
Neodymium magnets are known for strong magnetic induction and the ability to work at temperatures up to 230°C or higher (depending on the shape),
The ability for accurate shaping as well as adjustment to custom needs – neodymium magnets can be manufactured in many forms and dimensions, which extends the scope of their use cases,
Key role in modern technologies – they serve a purpose in data storage devices, electric motors, medical equipment or even other advanced devices,
Compactness – despite their small size, they deliver powerful magnetism, making them ideal for precision applications

Disadvantages of neodymium magnets:

They are prone to breaking when subjected to a powerful impact. If the magnets are exposed to shocks, we recommend in a protective enclosure. The steel housing, in the form of a holder, protects the magnet from cracks while also increases its overall resistance,
They lose magnetic force at high temperatures. Most neodymium magnets experience permanent degradation in strength when heated above 80°C (depending on the shape and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
Magnets exposed to wet conditions can oxidize. Therefore, for outdoor applications, we advise waterproof types made of coated materials,
Limited ability to create internal holes in the magnet – the use of a housing is recommended,
Safety concern linked to microscopic shards may arise, in case of ingestion, which is important in the health of young users. Furthermore, miniature parts from these devices may complicate medical imaging once in the system,
High unit cost – neodymium magnets are costlier than other types of magnets (e.g., ferrite), which increases the cost of large-scale applications

Notes with Neodymium Magnets

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

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.

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.

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

Keep neodymium magnets away from GPS and smartphones.

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 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.

Neodymium magnets can demagnetize at high temperatures.

Although magnets have shown to retain their effectiveness up to 80°C or 175°F, this temperature may vary depending on the type of material, shape, and intended use of the magnet.

Keep neodymium magnets far from children.

Neodymium magnets are not toys. Be cautious and make sure no child plays 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.

The magnet coating is made of nickel, so be cautious 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.

Magnets made of neodymium are highly fragile, they easily crack as well as can crumble.

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. At the moment of collision between the magnets, sharp metal fragments can be dispersed in different directions.

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

Neodymium magnets produce intense magnetic fields that can damage magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, etc. devices. They can also destroy devices like video players, televisions, CRT computer monitors. Do not forget to keep neodymium magnets away from these electronic devices.

Safety precautions!

So that know how powerful neodymium magnets are and why they are so dangerous, read the article - Dangerous very strong neodymium magnets.