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SM 32x150 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130358

GTIN/EAN: 5906301813064

Diameter Ø

32 mm [±1 mm]

Height

150 mm [±1 mm]

Weight

830 g

Magnetic Flux

~ 10 000 Gauss [±5%]

528.90 with VAT / pcs + price for transport

430.00 ZŁ net + 23% VAT / pcs

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Force as well as appearance of a neodymium magnet can be estimated using our online calculation tool.

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Product card - SM 32x150 [2xM8] / N52 - magnetic separator

Specification / characteristics - SM 32x150 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130358
GTIN/EAN 5906301813064
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 150 mm [±1 mm]
Weight 830 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 5 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x150 [2xM8] / N52 - magnetic separator
properties values units
remenance Br [min. - max.] ? 14.2-14.7 kGs
remenance Br [min. - max.] ? 1420-1470 mT
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 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²

Table 1: Rod construction
SM 32x150 [2xM8] / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 150 mm (L)
Active length 114 mm
Section count 4 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~917 g
Active area 115 cm² (Area)
Housing material AISI 304 1.4301 (Inox)
Surface finish Ra < 0.8 µm Polished
Temp. class 80°C Standard (N)
Force loss (at max °C) -12.8% Reversible loss (physics)
Force (calculated) 41 kg (theor.)
Induction (surface) ~10 000 Gauss (Max)

Chart 2: Field profile (4 sections)

Chart 3: Temperature performance

Technical specification and ecology
Elemental analysis
iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%
Ecology and recycling (GPSR)
recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 130358-2026
Magnet Unit Converter
Pulling force

Magnetic Field

Other products

A magnetic rod is the basic element of building grate separators and magnetic filters. 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 construction relies on a sealed, welded stainless steel housing, polished smooth. Inside there is a stack of strong neodymium magnets arranged in a special configuration (magnetic circuit). Such construction ensures full resistance to corrosion, water, oils, and acids.
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. For easier operation, it is worth considering ordering a rod in a version with a cleaning sleeve.
The Gauss value tells us how effectively and deeply the magnet will catch contaminants. 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 fulfill individual orders for bars perfectly matched to your machine or separator. The rod end is strictly adapted to the fastening system in your device. We ensure fast realization of special orders and technical advice.

Strengths and weaknesses of rare earth magnets.

Advantages

Apart from their strong holding force, neodymium magnets have these key benefits:
  • They have constant strength, and over more than 10 years their attraction force decreases symbolically – ~1% (in testing),
  • They possess excellent resistance to magnetism drop as a result of external magnetic sources,
  • Thanks to the elegant finish, the layer of nickel, gold-plated, or silver gives an visually attractive appearance,
  • Magnetic induction on the working layer of the magnet remains very high,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures approaching 230°C and above...
  • Possibility of precise machining as well as modifying to concrete conditions,
  • Key role in future technologies – they are used in HDD drives, motor assemblies, advanced medical instruments, as well as complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which allows their use in miniature devices

Weaknesses

What to avoid - cons of neodymium magnets: tips and applications.
  • To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Limited ability of making nuts in the magnet and complex forms - preferred is cover - magnetic holder.
  • Potential hazard resulting from small fragments of magnets are risky, if swallowed, which gains importance in the context of child safety. Additionally, small elements of these products can complicate diagnosis medical when they are in the body.
  • With budget limitations the cost of neodymium magnets can be a barrier,

Pull force analysis

Maximum magnetic pulling forcewhat affects it?

The lifting capacity listed is a measurement result conducted under standard conditions:
  • using a sheet made of high-permeability steel, functioning as a magnetic yoke
  • with a cross-section minimum 10 mm
  • characterized by lack of roughness
  • with total lack of distance (no paint)
  • for force acting at a right angle (pull-off, not shear)
  • at room temperature

Impact of factors on magnetic holding capacity in practice

Effective lifting capacity is influenced by working environment parameters, including (from most important):
  • Space between surfaces – every millimeter of distance (caused e.g. by varnish or dirt) diminishes the pulling force, often by half at just 0.5 mm.
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
  • Plate thickness – too thin steel causes magnetic saturation, causing part of the flux to be lost to the other side.
  • Steel grade – ideal substrate is pure iron steel. Cast iron may have worse magnetic properties.
  • Surface condition – ground elements ensure maximum contact, which improves force. Rough surfaces weaken the grip.
  • Thermal factor – high temperature reduces pulling force. Too high temperature can permanently damage the magnet.

Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate decreases the holding force.

Precautions when working with NdFeB magnets
Warning for heart patients

Medical warning: Neodymium magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Risk of cracking

Despite the nickel coating, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.

Metal Allergy

Medical facts indicate that the nickel plating (the usual finish) is a common allergen. If you have an allergy, avoid touching magnets with bare hands or opt for encased magnets.

Swallowing risk

Strictly keep magnets out of reach of children. Ingestion danger is significant, and the consequences of magnets connecting inside the body are very dangerous.

Bone fractures

Danger of trauma: The pulling power is so great that it can result in hematomas, pinching, and broken bones. Protective gloves are recommended.

Powerful field

Use magnets consciously. Their immense force can shock even experienced users. Be vigilant and do not underestimate their power.

Permanent damage

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will ruin its properties and pulling force.

Safe distance

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

Fire warning

Powder created during grinding of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Magnetic interference

An intense magnetic field negatively affects the operation of compasses in smartphones and GPS navigation. Maintain magnets near a smartphone to prevent breaking the sensors.

Security! Need more info? Read our article: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98