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neodymium magnets

We offer red color magnets Nd2Fe14B - our proposal. All magnesy neodymowe on our website are available for immediate purchase (see the list). Check out the magnet pricing for more details see the magnet price list

Magnet for water searching F400 GOLD

Where to purchase very strong neodymium magnet? Magnet holders in airtight and durable steel casing are ideally suited for use in difficult, demanding weather conditions, including during snow and rain check...

magnetic holders

Holders with magnets can be applied to improve manufacturing, underwater discoveries, or locating meteors made of ore read...

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Dhit sp. z o.o.
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SM 32x200 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130360

GTIN: 5906301813088

5

Diameter Ø [±0,1 mm]

32 mm

Height [±0,1 mm]

200 mm

Weight

1100 g

676.50 with VAT / pcs + price for transport

550.00 ZŁ net + 23% VAT / pcs

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SM 32x200 [2xM8] / N52 - magnetic separator
Specification/characteristics SM 32x200 [2xM8] / N52 - magnetic separator
properties
values
Cat. no.
130360
GTIN
5906301813088
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]
Weight
1100 g [±0,1 mm]
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material 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 at 20°C

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

Shopping tips

A magnetic rod is the basic element of building grate separators and magnetic filters. It is mounted in chutes, hoppers, and pipelines to protect production machines from failure. High magnetic induction on the surface allows catching the finest iron particles.
The outer layer is hygienic acid-resistant steel, approved for food contact. The core is a precise magnetic system generating high induction (Gauss). Such construction ensures full resistance to corrosion, water, oils, and acids.
Metal contaminants are strongly attracted, so removing them with a bare hand or glove can be difficult. We recommend sticking packing tape to the cluster of filings and tearing it off together with the contaminants. For easier operation, it is worth considering ordering a rod in a version with a cleaning sleeve.
The Gauss value tells us how effectively and deeply the magnet will catch contaminants. Standard rods (~8000 Gs) are sufficient for catching screws, nails, and steel shavings. High induction is necessary when contaminants are microscopic or weakly magnetic.
We can produce a rod of non-standard length with any mounting termination. You can choose a mounting method consistent with your technical design. Contact us for a quote on a non-standard dimension.

Pros as well as cons of rare earth magnets.

In addition to their magnetic capacity, neodymium magnets provide the following advantages:

  • Their power remains stable, and after around 10 years it decreases only by ~1% (according to research),
  • Neodymium magnets are distinguished by remarkably resistant to magnetic field loss caused by external interference,
  • A magnet with a smooth nickel surface has an effective appearance,
  • Neodymium magnets ensure maximum magnetic induction on a small area, which allows for strong attraction,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of precise machining as well as adapting to concrete requirements,
  • Wide application in modern industrial fields – they are utilized in magnetic memories, drive modules, precision medical tools, as well as complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which makes them useful in small systems

Disadvantages of NdFeB magnets:

  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • We suggest a housing - magnetic holder, due to difficulties in producing threads inside the magnet and complicated forms.
  • Possible danger resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child safety. Additionally, small elements of these devices can be problematic in diagnostics medical after entering the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Magnetic strength at its maximum – what contributes to it?

Holding force of 0 kg is a result of laboratory testing performed under the following configuration:

  • with the use of a yoke made of special test steel, guaranteeing full magnetic saturation
  • with a cross-section minimum 10 mm
  • characterized by even structure
  • without any insulating layer between the magnet and steel
  • during detachment in a direction vertical to the mounting surface
  • at temperature room level

Magnet lifting force in use – key factors

Holding efficiency is influenced by specific conditions, including (from priority):

  • Gap (between the magnet and the metal), because even a tiny distance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to varnish, corrosion or debris).
  • Loading method – declared lifting capacity refers to pulling vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of maximum force).
  • Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
  • Metal type – different alloys reacts the same. Alloy additives worsen the interaction with the magnet.
  • Surface condition – smooth surfaces guarantee perfect abutment, which improves force. Uneven metal weaken the grip.
  • Temperature – heating the magnet results in weakening of induction. It is worth remembering the thermal limit for a given model.

* Lifting capacity was determined by applying a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under shearing force the holding force is lower. Additionally, even a slight gap {between} the magnet’s surface and the plate lowers the lifting capacity.

H&S for magnets

Flammability

Machining of neodymium magnets poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Bone fractures

Mind your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!

Thermal limits

Watch the temperature. Heating the magnet to high heat will ruin its magnetic structure and pulling force.

Immense force

Handle magnets with awareness. Their immense force can surprise even professionals. Stay alert and do not underestimate their force.

Material brittleness

Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting shards into the air. We recommend safety glasses.

Phone sensors

A powerful magnetic field disrupts the operation of compasses in smartphones and GPS navigation. Maintain magnets near a device to avoid breaking the sensors.

Warning for allergy sufferers

Certain individuals suffer from a hypersensitivity to nickel, which is the typical protective layer for NdFeB magnets. Prolonged contact can result in skin redness. We strongly advise wear safety gloves.

Implant safety

Patients with a pacemaker must maintain an absolute distance from magnets. The magnetism can stop the operation of the life-saving device.

Magnetic media

Intense magnetic fields can destroy records on credit cards, HDDs, and other magnetic media. Stay away of at least 10 cm.

Danger to the youngest

NdFeB magnets are not toys. Eating several magnets may result in them connecting inside the digestive tract, which poses a severe health hazard and necessitates immediate surgery.

Security!

Want to know more? Check our post: Are neodymium magnets dangerous?

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98