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SM 32x250 [2xM8] / N42 - 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 130299

GTIN/EAN: 5906301812920

Diameter Ø

32 mm [±1 mm]

Height

250 mm [±1 mm]

Weight

1240 g

Magnetic Flux

~ 8 000 Gauss [±5%]

750.30 ZŁ with VAT / pcs + price for transport

610.00 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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SM 32x250 [2xM8] / N42 - magnetic separator

Specification / characteristics SM 32x250 [2xM8] / N42 - magnetic separator

properties

properties	values
Cat. no.	130299
GTIN/EAN	5906301812920
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	1240 g
Material Type	Stainless steel AISI 304 / A2
Magnetic Flux	~ 8 000 Gauss [±5%]
Size/Mount Quantity	2xM8
Polarity	circumferential - 9 poles
Casing Tube Thickness	1 mm
Manufacturing Tolerance	±1 mm

Magnetic properties of material N42

Specification / characteristics SM 32x250 [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

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

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%

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: 130299-2025

Quick Unit Converter

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A magnetic rod is the basic element of building grate separators and magnetic filters. It is mounted in chutes, hoppers, and pipelines to protect production machines from failure. Thanks to the use of strong neodymium magnets, the rod catches even metallic dust.

The outer layer is hygienic acid-resistant steel, approved for food contact. 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. 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.

Magnetic induction measured in Gauss (Gs) determines the density of magnetic flux on the rod surface. 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.

Yes, as a manufacturer, we make rods of any length and diameter (standard is dia 25mm and 32mm). You can choose a mounting method consistent with your technical design. We ensure fast realization of special orders and technical advice.

Advantages as well as disadvantages of neodymium magnets.

Strengths

Apart from their superior power, neodymium magnets have these key benefits:

They have unchanged lifting capacity, and over nearly 10 years their attraction force decreases symbolically – ~1% (in testing),
They maintain their magnetic properties even under external field action,
By using a lustrous coating of nickel, the element presents an professional look,
The surface of neodymium magnets generates a concentrated magnetic field – this is a key feature,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
Thanks to modularity in shaping and the ability to adapt to unusual requirements,
Key role in advanced technology sectors – they are utilized in magnetic memories, drive modules, precision medical tools, and industrial machines.
Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Disadvantages

Drawbacks and weaknesses of neodymium magnets: tips and applications.

To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening 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
Magnets exposed to a humid environment can rust. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
Limited ability of producing nuts in the magnet and complex shapes - recommended is a housing - magnetic holder.
Possible danger related to microscopic parts of magnets are risky, in case of ingestion, which gains importance in the context of child safety. It is also worth noting that tiny parts of these products can complicate diagnosis medical when they are in the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum magnetic pulling force – what contributes to it?

The specified lifting capacity refers to the peak performance, recorded under ideal test conditions, meaning:

using a plate made of low-carbon steel, serving as a magnetic yoke
possessing a massiveness of at least 10 mm to ensure full flux closure
with an polished contact surface
with zero gap (no paint)
for force applied at a right angle (in the magnet axis)
at ambient temperature approx. 20 degrees Celsius

What influences lifting capacity in practice

Real force impacted by specific conditions, such as (from priority):

Clearance – existence of any layer (rust, dirt, gap) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
Plate thickness – too thin plate does not accept the full field, causing part of the flux to be escaped into the air.
Steel grade – ideal substrate is high-permeability steel. Hardened steels may attract less.
Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
Thermal environment – temperature increase results in weakening of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity was assessed using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular detachment force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet’s surface and the plate reduces the holding force.

Safe handling of neodymium magnets

Finger safety

Large magnets can break fingers in a fraction of a second. Under no circumstances put your hand betwixt two attracting surfaces.

Eye protection

Protect your eyes. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.

Avoid contact if allergic

Studies show that the nickel plating (the usual finish) is a common allergen. For allergy sufferers, refrain from touching magnets with bare hands and opt for encased magnets.

Precision electronics

A powerful magnetic field negatively affects the functioning of magnetometers in phones and navigation systems. Keep magnets near a smartphone to avoid damaging the sensors.

This is not a toy

Adult use only. Tiny parts pose a choking risk, causing serious injuries. Keep out of reach of children and animals.

Combustion hazard

Combustion risk: Rare earth powder is explosive. Avoid machining magnets without safety gear as this risks ignition.

ICD Warning

Individuals with a ICD have to keep an large gap from magnets. The magnetic field can disrupt the operation of the implant.

Powerful field

Before starting, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.

Thermal limits

Watch the temperature. Exposing the magnet to high heat will destroy its properties and strength.

Safe distance

Intense magnetic fields can destroy records on payment cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.

Danger! More info about hazards in the article: Safety of working with magnets.

SM 32x250 [2xM8] / N42 - magnetic separator

Not sure which magnet to buy?

SM 32x250 [2xM8] / N42 - magnetic separator

Magnetic properties of material N42

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Material specification

Environmental data

Magnet pull force

Magnetic Field

See also offers

SMZR 32x175 / N52 - magnetic separator with handle

MW 5x2 / N38 - cylindrical magnet

SM 25x125 [2xM8] / N42 - magnetic separator

MT 50x1.5x50000 - magnetic tape

Advantages as well as disadvantages of neodymium magnets.

Strengths

Disadvantages

Holding force characteristics

Maximum magnetic pulling force – what contributes to it?

What influences lifting capacity in practice

Finger safety

Eye protection

Avoid contact if allergic

Precision electronics

This is not a toy

Combustion hazard

ICD Warning

Powerful field

Thermal limits

Safe distance

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C