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neodymium magnets

We provide red color magnetic Nd2Fe14B - our proposal. All magnesy in our store are available for immediate purchase (see the list). See the magnet pricing for more details check the magnet price list

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SMZR 32x225 / N52 - magnetic separator with handle

magnetic separator with handle

Catalog no 140468

GTIN: 5906301813521

5

Diameter Ø

32 mm [±1 mm]

Height

225 mm [±1 mm]

Weight

1245 g

Magnetic Flux

~ 10 000 Gauss [±5%]

676.50 with VAT / pcs + price for transport

550.00 ZŁ net + 23% VAT / pcs

bulk discounts:

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550.00 ZŁ
676.50 ZŁ
price from 5 pcs
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Strength as well as form of neodymium magnets can be analyzed with our modular calculator.

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SMZR 32x225 / N52 - magnetic separator with handle
Specification/characteristics SMZR 32x225 / N52 - magnetic separator with handle
properties
values
Cat. no.
140468
GTIN
5906301813521
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
32 mm [±1 mm]
Height
225 mm [±1 mm]
Weight
1245 g
Material Type
Stainless steel AISI 304 / A2
Magnetic Flux
~ 10 000 Gauss [±5%]
Size/Mount Quantity
2xM8
Polarity
circumferential - 7 poles
Casing Tube Thickness
1 mm
Manufacturing Tolerance
±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 manual separator is a basic tool for quick identification and sorting of metals. It enables effective segregation of materials in the yard and accepting goods. It can be used to collect scattered nails and screws from hard-to-reach places.
A neodymium magnet attracts only ferromagnetic metals, such as ordinary steel (black) and cast iron. If the magnet does not attract the tested element, it is probably non-ferrous metal or acid-resistant steel.
Neodymiums are more compact and effective during all-day work at a scrap yard. A lighter tool allows for longer work without wrist and arm pain. The neodymium version is currently the standard in professional scrap yards.
The construction consists of a hermetic can protecting the magnet and an ergonomic handle. The grip was designed so as not to slip in the hand, even in a work glove. The tool is durable, drop-resistant, and prepared for hard work.
It is a simple and reliable construction without moving parts, so cleaning consists of removing scrap. We also offer versions where pulling the handle automatically drops collected material. In the case of strong magnets, it is easiest to slide the metal to the side of the housing instead of tearing it straight off.

Advantages and disadvantages of rare earth magnets.

In addition to their long-term stability, neodymium magnets provide the following advantages:

  • They retain attractive force for around ten years – the drop is just ~1% (according to analyses),
  • They do not lose their magnetic properties even under external field action,
  • In other words, due to the aesthetic finish of nickel, the element is aesthetically pleasing,
  • Magnets possess huge magnetic induction on the outer layer,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • Considering the ability of precise shaping and adaptation to unique solutions, magnetic components can be created in a wide range of shapes and sizes, which increases their versatility,
  • Key role in modern industrial fields – they are used in hard drives, electromotive mechanisms, diagnostic systems, also complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in miniature devices

What to avoid - cons of neodymium magnets: application proposals

  • They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also improves its resistance to damage
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 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 holder, due to difficulties in creating threads inside the magnet and complex shapes.
  • Health risk resulting from small fragments of magnets are risky, when accidentally swallowed, which is particularly important in the context of child health protection. Additionally, tiny parts of these devices can disrupt the diagnostic process medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Magnetic strength at its maximum – what it depends on?

The lifting capacity listed is a theoretical maximum value executed under standard conditions:

  • with the contact of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • with a plane perfectly flat
  • with zero gap (without paint)
  • under vertical application of breakaway force (90-degree angle)
  • in temp. approx. 20°C

Determinants of practical lifting force of a magnet

It is worth knowing that the working load may be lower depending on the following factors, in order of importance:

  • Distance – existence of any layer (rust, dirt, gap) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
  • Direction of force – maximum parameter is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the surface is typically several times smaller (approx. 1/5 of the lifting capacity).
  • Plate thickness – too thin sheet does not accept the full field, causing part of the flux to be lost into the air.
  • Material type – the best choice is pure iron steel. Cast iron may generate lower lifting capacity.
  • Surface quality – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Roughness creates an air distance.
  • Temperature – heating the magnet causes a temporary drop of induction. Check the thermal limit for a given model.

* Lifting capacity was determined using a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the lifting capacity is smaller. Additionally, even a slight gap {between} the magnet’s surface and the plate reduces the load capacity.

Precautions when working with neodymium magnets

Dust explosion hazard

Combustion risk: Neodymium dust is highly flammable. Do not process magnets without safety gear as this risks ignition.

Skin irritation risks

Nickel alert: The nickel-copper-nickel coating consists of nickel. If skin irritation happens, cease handling magnets and wear gloves.

Thermal limits

Regular neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. This process is irreversible.

Beware of splinters

Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting shards into the air. We recommend safety glasses.

Do not give to children

Adult use only. Small elements pose a choking risk, causing intestinal necrosis. Store out of reach of kids and pets.

Respect the power

Handle magnets with awareness. Their powerful strength can shock even professionals. Be vigilant and do not underestimate their force.

Threat to electronics

Powerful magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

Pinching danger

Large magnets can crush fingers instantly. Never put your hand between two strong magnets.

Warning for heart patients

Patients with a ICD should maintain an large gap from magnets. The magnetic field can stop the functioning of the life-saving device.

Phone sensors

Be aware: rare earth magnets generate a field that disrupts sensitive sensors. Keep a separation from your mobile, device, and GPS.

Caution!

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