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neodymium magnets

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SM 32x500 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130467

GTIN: 5906301813385

5

Diameter Ø [±0,1 mm]

32 mm

Height [±0,1 mm]

500 mm

Weight

2770 g

1562.10 with VAT / pcs + price for transport

1270.00 ZŁ net + 23% VAT / pcs

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SM 32x500 [2xM8] / N52 - magnetic separator
Specification/characteristics SM 32x500 [2xM8] / N52 - magnetic separator
properties
values
Cat. no.
130467
GTIN
5906301813385
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
32 mm [±0,1 mm]
Height
500 mm [±0,1 mm]
Weight
2770 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

This product serves to effectively catch ferromagnetic contaminants from bulk and liquid products. It is commonly used for cleaning flour, sugar, plastic granules, as well as oils and coolants. High magnetic induction on the surface allows catching the finest iron particles.
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.
Due to the high power of the magnet, direct removal of filings can be troublesome and time-consuming. You can use compressed air or special non-magnetic strippers (rings). 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. Standard rods (~8000 Gs) are sufficient for catching screws, nails, and steel shavings. For the food and precision industry, we recommend the highest induction parameters.
We can produce a rod of non-standard length with any mounting termination. You can choose a mounting method consistent with your technical design. We ensure fast realization of special orders and technical advice.

Strengths as well as weaknesses of rare earth magnets.

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

  • They retain attractive force for almost 10 years – the drop is just ~1% (according to analyses),
  • They possess excellent resistance to weakening of magnetic properties due to external magnetic sources,
  • In other words, due to the glossy surface of nickel, the element is aesthetically pleasing,
  • The surface of neodymium magnets generates a intense magnetic field – this is a key feature,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
  • Thanks to the option of accurate forming and customization to specialized projects, neodymium magnets can be produced in a broad palette of shapes and sizes, which makes them more universal,
  • Wide application in modern industrial fields – they find application in computer drives, electric drive systems, diagnostic systems, also industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in compact constructions

Disadvantages of neodymium magnets:

  • They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • They oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • We recommend cover - magnetic mount, due to difficulties in creating nuts inside the magnet and complex shapes.
  • Potential hazard related to microscopic parts of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Additionally, small components of these magnets can be problematic in diagnostics medical in case of swallowing.
  • With large orders the cost of neodymium magnets is a challenge,

Maximum lifting capacity of the magnetwhat contributes to it?

The declared magnet strength represents the limit force, measured under laboratory conditions, specifically:

  • with the contact of a yoke made of special test steel, ensuring full magnetic saturation
  • whose thickness reaches at least 10 mm
  • characterized by lack of roughness
  • without any clearance between the magnet and steel
  • under axial force direction (90-degree angle)
  • at temperature approx. 20 degrees Celsius

Key elements affecting lifting force

Please note that the working load may be lower influenced by elements below, starting with the most relevant:

  • Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Base massiveness – too thin plate causes magnetic saturation, causing part of the power to be lost to the other side.
  • Steel grade – the best choice is high-permeability steel. Cast iron may attract less.
  • Base smoothness – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
  • Temperature – heating the magnet results in weakening of force. Check the thermal limit for a given model.

* Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the holding force is lower. Additionally, even a minimal clearance {between} the magnet and the plate reduces the lifting capacity.

Warnings

No play value

Absolutely store magnets out of reach of children. Ingestion danger is high, and the effects of magnets connecting inside the body are life-threatening.

Fragile material

Beware of splinters. Magnets can fracture upon violent connection, ejecting shards into the air. Eye protection is mandatory.

Impact on smartphones

Note: rare earth magnets produce a field that interferes with precision electronics. Keep a separation from your phone, device, and GPS.

Electronic hazard

Intense magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Stay away of at least 10 cm.

Safe operation

Before use, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.

Bodily injuries

Mind your fingers. Two powerful magnets will join instantly with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!

Sensitization to coating

Some people experience a contact allergy to Ni, which is the standard coating for neodymium magnets. Prolonged contact might lead to a rash. We recommend use protective gloves.

Life threat

Life threat: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.

Fire risk

Fire hazard: Neodymium dust is explosive. Do not process magnets in home conditions as this may cause fire.

Operating temperature

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

Security!

Looking for details? Read our article: Why are neodymium magnets dangerous?

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98