← previous
next →
Product available Ships today (order by 14:00) CO2 GPSR PPWR REACH

SM 32x300 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130459

GTIN/EAN: 5906301813309

Diameter Ø
32 mm [±1 mm]
Height
300 mm [±1 mm]
Weight
1660 g
Magnetic Flux
~ 10 000 Gauss [±5%]

How we measure these parameters — certificates and measurements

see specifications »

920.00 zł net / pcs

1131.60 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?
Quantity
Net
Gross
price from 1 pcs
920.00 zł
1131.60 zł
price from 5 pcs
828.00 zł
1018.44 zł

Frequently asked questions

Which rod should I choose for fine contamination?
For particles below 0.5 mm — a Ø32 mm rod in grade N52, with surface induction of about 10,000 Gs. A Ø25 rod in grade N42 gives about 6,500 Gs and is chosen for contamination above 1 mm: bolts, washers, pieces of wire.
Which rod pitch should I choose?
The narrow pitch, 40 mm centre to centre, for fine free-flowing fractions — it gives denser coverage of the cross-section. The wide pitch, 50 mm, for granulates and for damp, greasy or sticky materials, where a narrow pitch risks the material bridging above the rods.
Why does efficiency drop after a few weeks of operation?
Almost always because the separator has not been cleaned. The layer of captured particles shields the field, and further particles settle on that layer rather than on the rod surface, where the gradient is far stronger. The magnets themselves do not weaken at that rate.

Guides from the knowledge base

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

Order by 14:00 and we’ll ship today!

Technical details - SM 32x300 [2xM8] / N52 - magnetic separator

Specification / characteristics - SM 32x300 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130459
GTIN/EAN 5906301813309
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 300 mm [±1 mm]
Weight 1660 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 11 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x300 [2xM8] / N52 - magnetic separator
properties values units
Remanence Br ? 14.2-14.7 kGs
Remanence Br ? 1420-1470 mT
Coercivity bHc ? 10.8-12.5 kOe
Coercivity bHc ? 860-995 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 48-53 BH max MGOe
Energy product BHmax ? 380-422 BH max KJ/m
Maximum working 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 310 °C
Curie Temperature TF 590 °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 32x300 [2xM8] / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 300 mm (L)
Active length 264 mm
Section count 11 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~1834 g
Active area 265 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)
Max T = 80°C. Construction data for M8/M10 thread series.

Chart 2: Field profile (11 sections)

Simulation: 11 magnetic modules (pitch 23 mm).

Chart 3: Temperature performance

Technical and environmental data

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%

Environmental data

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: 130459-2026
Quick Unit Converter

Force (pull)

Magnetic Induction

Type your figure into a field, and the rest change instantly.

View more proposals

SMZR 25x100 / N52 - magnetic separator with handle
Product available Ships today (order by 14:00)

SMZR 25x100 / N52 - magnetic separator with handle

307.50 zł brutto / pcs
SM 32x500 [2xM8] / N42 - magnetic separator
Product available Ships today (order by 14:00)

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

1488.30 zł brutto / pcs
MW 4x6 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 4x6 / N38 - cylindrical magnet

0.381 zł brutto / pcs
MW 10x6 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 10x6 / N38 - cylindrical magnet

1.045 zł brutto / pcs
This product serves to effectively catch ferromagnetic contaminants from bulk and liquid products. It is commonly used for cleaning flour, sugar, plastic granules, as well as oils and coolants. Thanks to the use of strong neodymium magnets, the rod catches even metallic dust.
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). Such construction ensures full resistance to corrosion, water, oils, and acids.
Metal contaminants are strongly attracted, so removing them with a bare hand or glove can be difficult. 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 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. 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.

Pros and cons of neodymium magnets.

Strengths

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They retain attractive force for almost ten years – the loss is just ~1% (based on simulations),
  • They do not lose their magnetic properties even under close interference source,
  • Thanks to the shiny finish, the coating of nickel, gold-plated, or silver gives an elegant appearance,
  • Neodymium magnets create maximum magnetic induction on a small surface, which increases force concentration,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • In view of the possibility of flexible shaping and customization to custom projects, magnetic components can be modeled in a broad palette of forms and dimensions, which expands the range of possible applications,
  • Significant place in electronics industry – they find application in HDD drives, electromotive mechanisms, medical devices, and industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in small systems

Disadvantages

Characteristics of disadvantages of neodymium magnets and ways of using them
  • At very strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • We suggest cover - magnetic mount, due to difficulties in producing threads inside the magnet and complicated shapes.
  • Possible danger to health – tiny shards of magnets can be dangerous, if swallowed, which becomes key in the aspect of protecting the youngest. Additionally, small elements of these products are able to disrupt the diagnostic process medical in case of swallowing.
  • Due to expensive raw materials, their price is relatively high,

Holding force characteristics

Detachment force of the magnet in optimal conditions – what it depends on?

Information about lifting capacity is the result of a measurement for optimal configuration, taking into account:
  • with the application of a sheet made of low-carbon steel, ensuring full magnetic saturation
  • whose thickness reaches at least 10 mm
  • with a plane cleaned and smooth
  • without any clearance between the magnet and steel
  • for force applied at a right angle (pull-off, not shear)
  • at temperature room level

Key elements affecting lifting force

Real force is influenced by specific conditions, such as (from priority):
  • Distance (betwixt the magnet and the plate), as even a very small clearance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to varnish, corrosion or dirt).
  • Loading method – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits much less (typically approx. 20-30% of nominal force).
  • Plate thickness – too thin steel does not accept the full field, causing part of the power to be lost into the air.
  • Metal type – different alloys reacts the same. Alloy additives weaken the interaction with the magnet.
  • Base smoothness – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
  • Temperature influence – high temperature reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity was determined using a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under attempts to slide the magnet the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate lowers the lifting capacity.

Safe handling of NdFeB magnets
Precision electronics

GPS units and smartphones are extremely susceptible to magnetism. Close proximity with a strong magnet can decalibrate the sensors in your phone.

Permanent damage

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

Metal Allergy

Studies show that nickel (standard magnet coating) is a common allergen. For allergy sufferers, prevent touching magnets with bare hands or choose coated magnets.

Pacemakers

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

Caution required

Before use, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.

Do not give to children

Strictly keep magnets away from children. Choking hazard is high, and the effects of magnets clamping inside the body are fatal.

Fire warning

Dust created during grinding of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Bone fractures

Big blocks can smash fingers in a fraction of a second. Do not put your hand between two attracting surfaces.

Material brittleness

Protect your eyes. Magnets can fracture upon violent connection, launching shards into the air. We recommend safety glasses.

Electronic hazard

Data protection: Neodymium magnets can ruin data carriers and delicate electronics (pacemakers, medical aids, timepieces).

Warning! Want to know more? Check our post: Why are neodymium magnets dangerous?