Product available Ships tomorrow

SM 25x225 [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 130354

GTIN/EAN: 5906301813026

5.00

Diameter Ø

25 mm [±1 mm]

Height

225 mm [±1 mm]

Weight

0.01 g

Magnetic Flux

~ 9 500 Gauss [±5%]

688.80 ZŁ with VAT / pcs + price for transport

560.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

560.00 ZŁ

688.80 ZŁ

price from 5 pcs

532.00 ZŁ

654.36 ZŁ

price from 10 pcs

504.00 ZŁ

619.92 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Can't decide what to choose?

Call us +48 888 99 98 98 if you prefer let us know through contact form through our site.
Parameters along with form of a neodymium magnet can be reviewed on our online calculation tool.

Orders placed before 14:00 will be shipped the same business day.

SM 25x225 [2xM8] / N52 - magnetic separator

Specification / characteristics SM 25x225 [2xM8] / N52 - magnetic separator

properties

properties	values
Cat. no.	130354
GTIN/EAN	5906301813026
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	25 mm [±1 mm]
Height	225 mm [±1 mm]
Weight	0.01 g
Material Type	Stainless steel AISI 304 / A2
Magnetic Flux	~ 9 500 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 25x225 [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 and environmental data

Chemical composition

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: 130354-2025

Measurement Calculator

Magnet Pull Force

Kilograms (kg)

Newtons (N)

lbs

Magnetic Induction

Gauss (Gs)

Induction (T)

Put your value in just one field to get results for all other units immediately.

Other deals

Product available Ships tomorrow

GM 100x38x13 / N52 - weapon holder

65.50 ZŁ brutto / pcs

Product available Ships tomorrow

MW 15x4 / N38 - cylindrical magnet

1.968 ZŁ brutto / pcs

Product available Ships tomorrow

SM 25x100 [2xM8] / N52 - magnetic separator

319.80 ZŁ brutto / pcs

Product available Ships tomorrow

MW 15x1 / N38 - cylindrical magnet

0.800 ZŁ brutto / pcs

This product serves to effectively catch ferromagnetic contaminants from bulk and liquid products. 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 center is filled with NdFeB magnets and pole pieces, arranged to maximize the field on the tube surface. 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. We recommend sticking packing tape to the cluster of filings and tearing it off together with the contaminants. In industry, cover tubes (so-called Easy Clean system) are used, from which the magnetic insert slides out.

Magnetic induction measured in Gauss (Gs) determines the density of magnetic flux on the rod surface. The economical version (8kGs) handles large pieces of metal perfectly. 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. 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 and cons of Nd₂Fe₁₄B magnets.

Pros

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

They virtually do not lose power, because even after 10 years the performance loss is only ~1% (according to literature),
They possess excellent resistance to weakening of magnetic properties due to opposing magnetic fields,
The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to present itself better,
They feature high magnetic induction at the operating surface, making them more effective,
Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures approaching 230°C and above...
Possibility of custom forming as well as adapting to individual conditions,
Wide application in future technologies – they find application in HDD drives, brushless drives, diagnostic systems, as well as other advanced devices.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
Magnets exposed to a humid environment can rust. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
We suggest cover - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complicated forms.
Possible danger related to microscopic parts of magnets pose a threat, if swallowed, which gains importance in the context of child health protection. It is also worth noting that small elements of these devices are able to be problematic in diagnostics medical in case of swallowing.
With budget limitations the cost of neodymium magnets is a challenge,

Lifting parameters

Magnetic strength at its maximum – what it depends on?

Magnet power was determined for the most favorable conditions, taking into account:

using a plate made of low-carbon steel, serving as a circuit closing element
whose transverse dimension reaches at least 10 mm
characterized by even structure
with direct contact (no coatings)
for force acting at a right angle (in the magnet axis)
at conditions approx. 20°C

Practical aspects of lifting capacity – factors

During everyday use, the actual holding force is determined by several key aspects, presented from most significant:

Distance – the presence of foreign body (paint, dirt, air) interrupts the magnetic circuit, which lowers capacity rapidly (even by 50% at 0.5 mm).
Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
Substrate thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
Metal type – different alloys attracts identically. High carbon content weaken the attraction effect.
Plate texture – smooth surfaces ensure maximum contact, which improves force. Rough surfaces reduce efficiency.
Temperature – heating the magnet results in weakening of force. Check the thermal limit for a given model.

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under a perpendicular pulling force, whereas under shearing force the load capacity is reduced by as much as fivefold. In addition, even a slight gap between the magnet and the plate decreases the holding force.

Safety rules for work with NdFeB magnets

Immense force

Be careful. Rare earth magnets act from a distance and connect with huge force, often faster than you can react.

Threat to electronics

Very strong magnetic fields can corrupt files on credit cards, HDDs, and storage devices. Stay away of min. 10 cm.

Do not give to children

Strictly store magnets out of reach of children. Ingestion danger is high, and the effects of magnets connecting inside the body are tragic.

Do not overheat magnets

Control the heat. Exposing the magnet to high heat will ruin its magnetic structure and pulling force.

GPS Danger

A powerful magnetic field interferes with the operation of compasses in phones and navigation systems. Do not bring magnets near a device to prevent damaging the sensors.

Magnet fragility

Neodymium magnets are ceramic materials, meaning they are very brittle. Clashing of two magnets leads to them cracking into small pieces.

Pacemakers

For implant holders: Powerful magnets affect electronics. Keep at least 30 cm distance or ask another person to handle the magnets.

Warning for allergy sufferers

Certain individuals have a hypersensitivity to Ni, which is the typical protective layer for NdFeB magnets. Frequent touching can result in skin redness. We suggest wear protective gloves.

Crushing force

Risk of injury: The attraction force is so great that it can cause blood blisters, crushing, and even bone fractures. Use thick gloves.

Dust explosion hazard

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

Warning! Learn more about risks in the article: Safety of working with magnets.

SM 25x225 [2xM8] / N52 - magnetic separator

Can't decide what to choose?

SM 25x225 [2xM8] / N52 - magnetic separator

Magnetic properties of material N52

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Chemical composition

Sustainability

Magnet Pull Force

Magnetic Induction

Other deals

GM 100x38x13 / N52 - weapon holder

MW 15x4 / N38 - cylindrical magnet

SM 25x100 [2xM8] / N52 - magnetic separator

MW 15x1 / N38 - cylindrical magnet

Pros and cons of Nd2Fe14B magnets.

Pros

Cons

Lifting parameters

Magnetic strength at its maximum – what it depends on?

Practical aspects of lifting capacity – factors

Immense force

Threat to electronics

Do not give to children

Do not overheat magnets

GPS Danger

Magnet fragility

Pacemakers

Warning for allergy sufferers

Crushing force

Dust explosion hazard

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Pros and cons of Nd₂Fe₁₄B magnets.