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neodymium magnets

We provide red color magnetic Nd2Fe14B - our store's offer. Practically all magnesy neodymowe in our store are available for immediate delivery (see the list). Check out the magnet price list for more details see the magnet price list

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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. Thanks to the use of strong neodymium magnets, the rod catches even metallic dust.
The rod consists of a cover tube made of high-quality acid-resistant steel (AISI 304 or 316). The center is filled with NdFeB magnets and pole pieces, arranged to maximize the field on the tube surface. Thanks to this, the rod is durable, hygienic, and easy to keep clean.
Metal filings stick to the surface very strongly, so cleaning requires strength or cleverness. We recommend sticking packing tape to the cluster of filings and tearing it off together with the contaminants. In industry, cover tubes (so-called Easy Clean system) are used, from which the magnetic insert slides out.
Magnetic induction measured in Gauss (Gs) determines the density of magnetic flux on the rod surface. For basic machine protection against pieces of iron, standard power is sufficient. High Power versions (~12000-14000 Gs) are necessary for catching metallic dust, oxides, and stainless steel after processing.
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 and cons of neodymium magnets.

Apart from their strong magnetism, neodymium magnets have these key benefits:

  • They virtually do not lose power, because even after 10 years the performance loss is only ~1% (in laboratory conditions),
  • They are noted for resistance to demagnetization induced by external disturbances,
  • Thanks to the metallic finish, the surface of Ni-Cu-Ni, gold-plated, or silver gives an clean appearance,
  • Neodymium magnets generate maximum magnetic induction on a contact point, which increases force concentration,
  • Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
  • In view of the possibility of accurate molding and adaptation to individualized solutions, magnetic components can be created in a variety of shapes and sizes, which makes them more universal,
  • Huge importance in innovative solutions – they are utilized in HDD drives, drive modules, diagnostic systems, also technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which enables their usage in miniature devices

What to avoid - cons of neodymium magnets: weaknesses and usage proposals

  • At strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • We suggest a housing - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complicated shapes.
  • Potential hazard resulting from small fragments of magnets are risky, if swallowed, which is particularly important in the context of child health protection. Furthermore, small elements of these magnets can disrupt the diagnostic process medical in case of swallowing.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Highest magnetic holding forcewhat contributes to it?

The force parameter is a measurement result performed under specific, ideal conditions:

  • using a plate made of mild steel, acting as a circuit closing element
  • whose transverse dimension equals approx. 10 mm
  • characterized by smoothness
  • without any air gap between the magnet and steel
  • during detachment in a direction perpendicular to the plane
  • at ambient temperature room level

Magnet lifting force in use – key factors

Real force is influenced by working environment parameters, including (from most important):

  • Gap (betwixt the magnet and the plate), because even a very small clearance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to paint, corrosion or dirt).
  • Angle of force application – maximum parameter is reached only during perpendicular pulling. The force required to slide of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
  • Plate thickness – insufficiently thick plate does not accept the full field, causing part of the power to be escaped to the other side.
  • Metal type – different alloys reacts the same. Alloy additives worsen the attraction effect.
  • Surface finish – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
  • Operating temperature – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).

* Lifting capacity was determined by applying a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the lifting capacity is smaller. In addition, even a minimal clearance {between} the magnet and the plate reduces the holding force.

Precautions when working with neodymium magnets

Cards and drives

Data protection: Strong magnets can ruin payment cards and sensitive devices (heart implants, hearing aids, timepieces).

Heat sensitivity

Keep cool. Neodymium magnets are sensitive to heat. If you require resistance above 80°C, look for HT versions (H, SH, UH).

Beware of splinters

NdFeB magnets are sintered ceramics, meaning they are very brittle. Clashing of two magnets will cause them cracking into small pieces.

Conscious usage

Use magnets consciously. Their immense force can shock even professionals. Plan your moves and respect their force.

Mechanical processing

Powder produced during cutting of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Warning for heart patients

People with a heart stimulator must keep an safe separation from magnets. The magnetism can interfere with the functioning of the life-saving device.

Danger to the youngest

Strictly store magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets clamping inside the body are tragic.

Phone sensors

Be aware: rare earth magnets produce a field that disrupts precision electronics. Keep a safe distance from your phone, device, and GPS.

Finger safety

Big blocks can smash fingers in a fraction of a second. Never put your hand betwixt two strong magnets.

Avoid contact if allergic

It is widely known that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, avoid touching magnets with bare hands or select encased magnets.

Important!

Want to know more? Read our article: Why are neodymium magnets dangerous?

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98