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

SM 32x225 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130361

GTIN/EAN: 5906301813095

Diameter Ø
32 mm [±1 mm]
Height
225 mm [±1 mm]
Weight
1205 g
Magnetic Flux
~ 10 000 Gauss [±5%]

How we measure these parameters — certificates and measurements

check technical specifications »

650.00 zł net / pcs

799.50 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?
Quantity
Net
Gross
price from 1 pcs
650.00 zł
799.50 zł
price from 5 pcs
617.50 zł
759.53 zł
price from 10 pcs
585.00 zł
719.55 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 32x225 [2xM8] / N52 - magnetic separator

Specification / characteristics - SM 32x225 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130361
GTIN/EAN 5906301813095
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 225 mm [±1 mm]
Weight 1205 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 10 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 8 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x225 [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 32x225 [2xM8] / N52

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 225 mm (L)
Active length 189 mm
Section count 8 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~1375 g
Active area 190 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 (8 sections)

Simulation: 8 magnetic modules (pitch 23 mm).

Chart 3: Temperature performance

Engineering data and GPSR

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: 130361-2026
Measurement Calculator

Force (pull)

Magnetic Induction

Input your value in just one field to get results for the other units immediately.

View more deals

MP 10x7/3.5x3 / N38 - ring magnet
Product available Ships today (order by 14:00)

MP 10x7/3.5x3 / N38 - ring magnet

0.886 zł brutto / pcs
UMGGW 66x8.5 [M8] GW / N38 - magnetic holder rubber internal thread
Product available Ships today (order by 14:00)

UMGGW 66x8.5 [M8] GW / N38 - magnetic holder rubber internal thread

23.37 zł brutto / pcs
UMT 29x38 black / N38 - board holder
Product available Ships today (order by 14:00)

UMT 29x38 black / N38 - board holder

6.81 zł brutto / pcs
MW 4x8 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 4x8 / N38 - cylindrical magnet

0.701 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. 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 contaminants are strongly attracted, so removing them with a bare hand or glove can be difficult. You can use compressed air or special non-magnetic strippers (rings). In industry, cover tubes (so-called Easy Clean system) are used, from which the magnetic insert slides out.
The Gauss value tells us how effectively and deeply the magnet will catch contaminants. Standard rods (~8000 Gs) are sufficient for catching screws, nails, and steel shavings. High induction is necessary when contaminants are microscopic or weakly magnetic.
We fulfill individual orders for bars perfectly matched to your machine or separator. We offer various tip options: threaded holes (e.g., M8, M10), protruding screws, flat pivots, mills, or handles. We ensure fast realization of special orders and technical advice.

Pros as well as cons of rare earth magnets.

Pros

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • Their power remains stable, and after approximately 10 years it decreases only by ~1% (according to research),
  • They show high resistance to demagnetization induced by external disturbances,
  • Thanks to the reflective finish, the surface of nickel, gold-plated, or silver-plated gives an clean appearance,
  • Magnetic induction on the working layer of the magnet is impressive,
  • 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...
  • Thanks to flexibility in constructing and the ability to modify to unusual requirements,
  • Huge importance in modern industrial fields – they serve a role in hard drives, electromotive mechanisms, precision medical tools, also industrial machines.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their strength 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 rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of creating threads in the magnet and complex shapes - recommended is a housing - magnet mounting.
  • Health risk to health – tiny shards of magnets are risky, if swallowed, which gains importance in the context of child health protection. Furthermore, tiny parts of these magnets are able to complicate diagnosis medical in case of swallowing.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what contributes to it?

The load parameter shown represents the limit force, recorded under laboratory conditions, namely:
  • with the use of a sheet made of low-carbon steel, ensuring full magnetic saturation
  • possessing a thickness of minimum 10 mm to avoid saturation
  • characterized by even structure
  • without the slightest clearance between the magnet and steel
  • for force acting at a right angle (in the magnet axis)
  • at standard ambient temperature

Determinants of practical lifting force of a magnet

Please note that the magnet holding may be lower influenced by elements below, starting with the most relevant:
  • Distance – existence of any layer (paint, tape, air) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Steel type – low-carbon steel attracts best. Higher carbon content reduce magnetic permeability and holding force.
  • Surface condition – ground elements guarantee perfect abutment, which increases force. Rough surfaces weaken the grip.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was measured by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, in contrast under parallel forces the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate lowers the load capacity.

Safe handling of NdFeB magnets
Bodily injuries

Big blocks can crush fingers instantly. Never place your hand betwixt two strong magnets.

Permanent damage

Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will permanently weaken its properties and strength.

Risk of cracking

Watch out for shards. Magnets can explode upon violent connection, launching shards into the air. Wear goggles.

This is not a toy

Absolutely store magnets out of reach of children. Choking hazard is high, and the effects of magnets clamping inside the body are life-threatening.

Magnetic media

Avoid bringing magnets close to a wallet, computer, or screen. The magnetic field can destroy these devices and erase data from cards.

Phone sensors

A strong magnetic field disrupts the functioning of magnetometers in phones and navigation systems. Keep magnets close to a smartphone to avoid damaging the sensors.

Do not underestimate power

Exercise caution. Neodymium magnets act from a distance and snap with huge force, often faster than you can react.

Fire risk

Dust created during machining of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Implant safety

People with a ICD must keep an large gap from magnets. The magnetic field can disrupt the operation of the implant.

Allergic reactions

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If an allergic reaction appears, immediately stop handling magnets and use protective gear.

Safety First! More info about risks in the article: Safety of working with magnets.