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SM 32x500 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130374

GTIN/EAN: 5906301813224

5.00

Diameter Ø

32 mm [±1 mm]

Height

500 mm [±1 mm]

Weight

2670 g

Magnetic Flux

~ 8 000 Gauss [±5%]

1488.30 with VAT / pcs + price for transport

1210.00 ZŁ net + 23% VAT / pcs

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Technical data of the product - SM 32x500 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 32x500 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130374
GTIN/EAN 5906301813224
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 500 mm [±1 mm]
Weight 2670 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 19 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 32x500 [2xM8] / N42 - magnetic separator
properties values units
remenance Br [min. - max.] ? 12.9-13.2 kGs
remenance Br [min. - max.] ? 1290-1320 mT
coercivity bHc ? 10.8-12.0 kOe
coercivity bHc ? 860-955 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 40-42 BH max MGOe
energy density [min. - max.] ? 318-334 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 32x500 [2xM8] / N42

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 500 mm (L)
Active length 464 mm
Section count 20 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~3056 g
Active area 466 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) 26.2 kg (theor.)
Induction (surface) ~8 000 Gauss (Max)

Chart 2: Field profile (20 sections)

Chart 3: Temperature performance

Engineering data and GPSR
Material specification
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%
Sustainability
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: 130374-2026
Measurement Calculator
Magnet pull force

Magnetic Induction

Check out more products

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). Inside there is a stack of strong neodymium magnets arranged in a special configuration (magnetic circuit). 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. The most effective home method is using adhesive tape, which we wrap around the dirt and peel off. For easier operation, it is worth considering ordering a rod in a version with a cleaning sleeve.
The more Gauss, the smaller and more weakly magnetic particles will be effectively caught. 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 fulfill individual orders for bars perfectly matched to your machine or separator. You can choose a mounting method consistent with your technical design. Contact us for a quote on a non-standard dimension.

Advantages as well as disadvantages of rare earth magnets.

Strengths

Apart from their consistent magnetism, neodymium magnets have these key benefits:
  • Their magnetic field is maintained, and after around 10 years it drops only by ~1% (according to research),
  • Magnets very well defend themselves against demagnetization caused by ambient magnetic noise,
  • In other words, due to the metallic surface of nickel, the element becomes visually attractive,
  • Neodymium magnets achieve maximum magnetic induction on a their surface, which increases force concentration,
  • 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 specialized requirements, NdFeB magnets can be produced in a variety of shapes and sizes, which expands the range of possible applications,
  • Key role in modern industrial fields – they find application in computer drives, brushless drives, medical devices, as well as complex engineering applications.
  • Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Cons

Characteristics of disadvantages of neodymium magnets and ways of using them
  • Brittleness is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
  • Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • They oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of producing threads in the magnet and complex shapes - recommended is cover - magnet mounting.
  • Health risk resulting from small fragments of magnets pose a threat, in case of ingestion, which becomes key in the aspect of protecting the youngest. It is also worth noting that small components of these products are able to complicate diagnosis medical when they are in the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Optimal lifting capacity of a neodymium magnetwhat contributes to it?

Magnet power is the result of a measurement for the most favorable conditions, including:
  • on a plate made of structural steel, optimally conducting the magnetic flux
  • whose transverse dimension is min. 10 mm
  • with an ideally smooth touching surface
  • under conditions of ideal adhesion (surface-to-surface)
  • for force applied at a right angle (pull-off, not shear)
  • at conditions approx. 20°C

Determinants of practical lifting force of a magnet

It is worth knowing that the magnet holding may be lower subject to the following factors, in order of importance:
  • Distance – existence of any layer (rust, tape, air) interrupts the magnetic circuit, which lowers capacity rapidly (even by 50% at 0.5 mm).
  • Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
  • Steel thickness – too thin steel does not close the flux, causing part of the power to be wasted into the air.
  • Steel grade – the best choice is high-permeability steel. Stainless steels may attract less.
  • Surface finish – ideal contact is possible only on polished steel. Rough texture create air cushions, weakening the magnet.
  • Temperature influence – high temperature reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under a perpendicular pulling force, in contrast under parallel forces the holding force is lower. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.

Precautions when working with neodymium magnets
Safe operation

Handle magnets consciously. Their powerful strength can surprise even professionals. Be vigilant and do not underestimate their force.

Flammability

Combustion risk: Rare earth powder is explosive. Do not process magnets without safety gear as this may cause fire.

Eye protection

Despite the nickel coating, neodymium is delicate and not impact-resistant. Avoid impacts, as the magnet may shatter into hazardous fragments.

Allergic reactions

It is widely known that nickel (standard magnet coating) is a potent allergen. If your skin reacts to metals, refrain from direct skin contact and select encased magnets.

Compass and GPS

Note: rare earth magnets generate a field that confuses precision electronics. Keep a safe distance from your mobile, tablet, and GPS.

Demagnetization risk

Keep cool. Neodymium magnets are sensitive to temperature. If you need operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Crushing force

Risk of injury: The pulling power is so immense that it can result in blood blisters, pinching, and even bone fractures. Use thick gloves.

Product not for children

Adult use only. Small elements can be swallowed, causing severe trauma. Store out of reach of children and animals.

Medical interference

Warning for patients: Strong magnetic fields disrupt electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Magnetic media

Do not bring magnets near a wallet, laptop, or TV. The magnetic field can destroy these devices and wipe information from cards.

Safety First! Need more info? Read our article: Are neodymium magnets dangerous?