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neodymium magnets

We offer red color magnets Nd2Fe14B - our offer. Practically all magnesy neodymowe on our website are in stock for immediate purchase (check the list). See the magnet price list for more details see the magnet price list

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SMZR 32x100 / N52 - magnetic separator with handle

magnetic separator with handle

Catalog no 140237

GTIN: 5906301813453

5.00

Diameter Ø

32 mm [±1 mm]

Height

100 mm [±1 mm]

Weight

660 g

Magnetic Flux

~ 10 000 Gauss [±5%]

369.00 with VAT / pcs + price for transport

300.00 ZŁ net + 23% VAT / pcs

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SMZR 32x100 / N52 - magnetic separator with handle

Specification / characteristics SMZR 32x100 / N52 - magnetic separator with handle

properties
properties values
Cat. no. 140237
GTIN 5906301813453
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 32 mm [±1 mm]
Height 100 mm [±1 mm]
Weight 660 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 3 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SMZR 32x100 / N52 - magnetic separator with handle
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

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
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Magnet Pull Force

Field Strength

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This gripper serves for instant distinction of steel (iron) from non-ferrous metals. Thanks to it, you can easily and quickly assess the value of scrap and avoid mistakes. It is also useful for pulling small steel elements from crates, ash, sand, or sawdust.
A neodymium magnet attracts only ferromagnetic metals, such as ordinary steel (black) and cast iron. Lack of reaction (attraction) means the tested item is made of non-magnetic material.
Neodymium separators are much lighter and many times stronger than traditional ferrite ones. A lighter tool allows for longer work without wrist and arm pain. The neodymium version is currently the standard in professional scrap yards.
The magnet is completely shielded from mechanical impacts, which extends its lifespan. The grip was designed so as not to slip in the hand, even in a work glove. Thanks to such an armored build, the separator is resistant to difficult conditions prevailing at a scrap yard.
In this model, collected metal must be torn off manually (preferably in a work glove). If you are looking for automatic dropping, ask about models with a magnetic release system. The sliding technique is more effective and requires less force than perpendicular tearing.

Advantages and disadvantages of Nd2Fe14B magnets.

Pros
Apart from their strong magnetic energy, neodymium magnets have these key benefits:
  • They do not lose strength, even after nearly 10 years – the drop in power is only ~1% (based on measurements),
  • They feature excellent resistance to magnetism drop due to external magnetic sources,
  • Thanks to the shiny finish, the layer of nickel, gold-plated, or silver gives an clean appearance,
  • They are known for high magnetic induction at the operating surface, which affects their effectiveness,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to freedom in shaping and the capacity to customize to client solutions,
  • Significant place in advanced technology sectors – they serve a role in data components, motor assemblies, medical devices, also industrial machines.
  • Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,
Limitations
Disadvantages of NdFeB magnets:
  • To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their power 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
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • Limited possibility of creating nuts in the magnet and complex shapes - preferred is casing - mounting mechanism.
  • Potential hazard to health – tiny shards of magnets are risky, if swallowed, which is particularly important in the context of child safety. Additionally, small components of these magnets can complicate diagnosis medical after entering the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Magnetic strength at its maximum – what contributes to it?
The force parameter is a theoretical maximum value executed under standard conditions:
  • using a base made of low-carbon steel, serving as a ideal flux conductor
  • with a cross-section minimum 10 mm
  • with an polished touching surface
  • under conditions of ideal adhesion (surface-to-surface)
  • during pulling in a direction vertical to the mounting surface
  • at conditions approx. 20°C
Determinants of practical lifting force of a magnet
During everyday use, the actual holding force depends on several key aspects, ranked from the most important:
  • Gap between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
  • Direction of force – highest force is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is standardly many times smaller (approx. 1/5 of the lifting capacity).
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
  • Plate material – mild steel attracts best. Alloy admixtures reduce magnetic properties and holding force.
  • Plate texture – ground elements guarantee perfect abutment, which improves force. Rough surfaces reduce efficiency.
  • Temperature influence – hot environment weakens pulling force. Too high temperature can permanently damage the magnet.

Lifting capacity was assessed by applying a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the load capacity.

Warnings
Heat warning

Standard neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. Damage is permanent.

Crushing force

Mind your fingers. Two large magnets will join instantly with a force of massive weight, crushing everything in their path. Exercise extreme caution!

Keep away from electronics

An intense magnetic field interferes with the operation of magnetometers in smartphones and GPS navigation. Keep magnets close to a device to avoid breaking the sensors.

Life threat

Life threat: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Electronic hazard

Intense magnetic fields can destroy records on payment cards, hard drives, and storage devices. Stay away of at least 10 cm.

Metal Allergy

It is widely known that the nickel plating (the usual finish) is a strong allergen. If you have an allergy, avoid touching magnets with bare hands and choose encased magnets.

Combustion hazard

Fire hazard: Rare earth powder is highly flammable. Avoid machining magnets in home conditions as this may cause fire.

Eye protection

Watch out for shards. Magnets can fracture upon uncontrolled impact, ejecting sharp fragments into the air. Eye protection is mandatory.

Handling guide

Handle with care. Rare earth magnets attract from a long distance and snap with massive power, often faster than you can react.

Do not give to children

Always keep magnets out of reach of children. Choking hazard is significant, and the consequences of magnets clamping inside the body are very dangerous.

Safety First! Need more info? Read our article: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98