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neodymium magnets

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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

It is the "heart" of every magnetic filter used in industry for cleaning raw materials. 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 core is a precise magnetic system generating high induction (Gauss). 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. The economical version (8kGs) handles large pieces of metal perfectly. 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. We ensure fast realization of special orders and technical advice.

Pros as well as cons of NdFeB magnets.

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

  • Their magnetic field is maintained, and after around 10 years it decreases only by ~1% (according to research),
  • Magnets very well resist against demagnetization caused by foreign field sources,
  • The use of an refined finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • Magnetic induction on the working layer of the magnet turns out to be exceptional,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of precise forming as well as modifying to complex conditions,
  • Key role in electronics industry – they are commonly used in data components, motor assemblies, precision medical tools, and industrial machines.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Disadvantages of NdFeB magnets:

  • At very strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets experience a drop in strength. 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
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in producing nuts and complex shapes in magnets, we recommend using casing - magnetic mechanism.
  • Health risk resulting from small fragments of magnets are risky, if swallowed, which becomes key in the context of child health protection. Furthermore, small components of these devices can disrupt the diagnostic process medical when they are in the body.
  • With large orders the cost of neodymium magnets is a challenge,

Optimal lifting capacity of a neodymium magnetwhat contributes to it?

Holding force of 0 kg is a theoretical maximum value performed under the following configuration:

  • using a base made of mild steel, functioning as a ideal flux conductor
  • whose thickness equals approx. 10 mm
  • with an polished contact surface
  • under conditions of ideal adhesion (metal-to-metal)
  • under vertical application of breakaway force (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Practical lifting capacity: influencing factors

During everyday use, the actual lifting capacity depends on many variables, ranked from most significant:

  • Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Loading method – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
  • Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of generating force.
  • Plate material – low-carbon steel gives the best results. Higher carbon content reduce magnetic permeability and holding force.
  • Smoothness – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
  • Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

* Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under perpendicular forces, whereas under attempts to slide the magnet the lifting capacity is smaller. In addition, even a small distance {between} the magnet and the plate decreases the holding force.

Precautions when working with NdFeB magnets

Material brittleness

Despite metallic appearance, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Crushing risk

Mind your fingers. Two large magnets will join instantly with a force of massive weight, destroying everything in their path. Be careful!

Thermal limits

Standard neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. The loss of strength is permanent.

Safe distance

Equipment safety: Strong magnets can ruin payment cards and delicate electronics (pacemakers, hearing aids, mechanical watches).

Safe operation

Before starting, read the rules. Sudden snapping can break the magnet or hurt your hand. Be predictive.

Flammability

Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this may cause fire.

Sensitization to coating

Studies show that the nickel plating (the usual finish) is a common allergen. If your skin reacts to metals, prevent touching magnets with bare hands or opt for versions in plastic housing.

Medical interference

Patients with a ICD should maintain an absolute distance from magnets. The magnetic field can stop the functioning of the implant.

GPS Danger

An intense magnetic field disrupts the functioning of magnetometers in smartphones and navigation systems. Keep magnets near a device to prevent damaging the sensors.

Do not give to children

Neodymium magnets are not toys. Swallowing multiple magnets may result in them connecting inside the digestive tract, which constitutes a direct threat to life and necessitates immediate surgery.

Security!

Looking for details? Check our post: Why are neodymium magnets dangerous?

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98