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SM 32x250 [2xM8] / N52 - magnetic separator

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500
Rating: 5

magnetic separator

Catalog no 130362

GTIN/EAN: 5906301813101

Diameter Ø

32 mm [±1 mm]

Height

250 mm [±1 mm]

Weight

1285 g

Magnetic Flux

~ 10 000 Gauss [±5%]

824.10 ZŁ with VAT / pcs + price for transport

670.00 ZŁ net + 23% VAT / pcs

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SM 32x250 [2xM8] / N52 - magnetic separator

Specification / characteristics SM 32x250 [2xM8] / N52 - magnetic separator

properties

properties	values
Cat. no.	130362
GTIN/EAN	5906301813101
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	250 mm [±1 mm]
Weight	1285 g
Material Type	Stainless steel AISI 304 / A2
Magnetic Flux	~ 10 000 Gauss [±5%]
Size/Mount Quantity	2xM8
Polarity	circumferential - 9 poles
Casing Tube Thickness	1 mm
Manufacturing Tolerance	±1 mm

Magnetic properties of material N52

Specification / characteristics SM 32x250 [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

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

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: 130362-2025

Magnet Unit Converter

Magnet pull force

Newtons (N)

lbs

Magnetic Induction

Gauss (Gs)

Induction (T)

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A magnetic rod is the basic element of building grate separators and magnetic filters. Its task is separation (separation) of metal filings from the transported material. 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). The core is a precise magnetic system generating high induction (Gauss). Thanks to this, the rod is durable, hygienic, and easy to keep clean.

Due to the high power of the magnet, direct removal of filings can be troublesome and time-consuming. 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. 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. Contact us for a quote on a non-standard dimension.

Pros as well as cons of neodymium magnets.

Pros

Besides their magnetic performance, neodymium magnets are valued for these benefits:

They have constant strength, and over more than ten years their performance decreases symbolically – ~1% (according to theory),
Neodymium magnets are distinguished by highly resistant to loss of magnetic properties caused by external magnetic fields,
By applying a reflective layer of nickel, the element gains an professional look,
Neodymium magnets ensure maximum magnetic induction on a small area, which increases force concentration,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
Possibility of custom forming and optimizing to complex needs,
Key role in modern technologies – they are used in hard drives, electric motors, medical equipment, also technologically advanced constructions.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Limitations

Drawbacks and weaknesses of neodymium magnets and proposals for their use:

They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength 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
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
Due to limitations in realizing nuts and complicated shapes in magnets, we propose using a housing - magnetic holder.
Potential hazard related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that small elements of these devices can be problematic in diagnostics medical after entering 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

Best holding force of the magnet in ideal parameters – what contributes to it?

The declared magnet strength represents the maximum value, measured under optimal environment, meaning:

on a plate made of mild steel, effectively closing the magnetic field
possessing a thickness of minimum 10 mm to avoid saturation
characterized by smoothness
under conditions of no distance (metal-to-metal)
for force acting at a right angle (in the magnet axis)
in neutral thermal conditions

Determinants of practical lifting force of a magnet

Real force is influenced by specific conditions, including (from most important):

Distance – existence of foreign body (rust, tape, gap) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
Loading method – catalog parameter refers to pulling vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of maximum force).
Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
Material type – the best choice is pure iron steel. Hardened steels may generate lower lifting capacity.
Plate texture – ground elements guarantee perfect abutment, which improves field saturation. Uneven metal weaken the grip.
Heat – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).

Lifting capacity was determined with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, in contrast under shearing force the lifting capacity is smaller. In addition, even a slight gap between the magnet’s surface and the plate lowers the load capacity.

Precautions when working with neodymium magnets

Magnets are brittle

NdFeB magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets leads to them shattering into shards.

Machining danger

Powder generated during grinding of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Threat to navigation

Navigation devices and mobile phones are highly sensitive to magnetic fields. Direct contact with a strong magnet can decalibrate the sensors in your phone.

Maximum temperature

Keep cool. NdFeB magnets are sensitive to temperature. If you need resistance above 80°C, ask us about special high-temperature series (H, SH, UH).

Magnetic media

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

Skin irritation risks

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If redness happens, cease working with magnets and wear gloves.

Hand protection

Risk of injury: The pulling power is so great that it can cause hematomas, pinching, and even bone fractures. Use thick gloves.

Choking Hazard

Product intended for adults. Small elements can be swallowed, causing severe trauma. Keep away from kids and pets.

Medical interference

Patients with a heart stimulator must keep an large gap from magnets. The magnetism can disrupt the functioning of the life-saving device.

Caution required

Be careful. Rare earth magnets act from a distance and snap with massive power, often faster than you can move away.

Security! Details about hazards in the article: Safety of working with magnets.

SM 32x250 [2xM8] / N52 - magnetic separator

Not sure about your choice?

SM 32x250 [2xM8] / N52 - magnetic separator

Magnetic properties of material N52

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Induction

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SM 32x100 [2xM8] / N52 - magnetic separator

SM 25x275 [2xM8] / N42 - magnetic separator

MPL 20x8x6 / N38 - lamellar magnet

Pros as well as cons of neodymium magnets.

Pros

Limitations

Pull force analysis

Best holding force of the magnet in ideal parameters – what contributes to it?

Determinants of practical lifting force of a magnet

Magnets are brittle

Machining danger

Threat to navigation

Maximum temperature

Magnetic media

Skin irritation risks

Hand protection

Choking Hazard

Medical interference

Caution required

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C