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SM 25x175 [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 130369

GTIN/EAN: 5906301813170

Diameter Ø

25 mm [±1 mm]

Height

175 mm [±1 mm]

Weight

0.01 g

Magnetic Flux

~ 9 500 Gauss [±5%]

541.20 ZŁ with VAT / pcs + price for transport

440.00 ZŁ net + 23% VAT / pcs

bulk discounts:

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487.08 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

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Contact us by phone +48 888 99 98 98 alternatively let us know by means of form the contact page.
Specifications along with shape of magnets can be checked on our force calculator.

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SM 25x175 [2xM8] / N52 - magnetic separator

Specification / characteristics SM 25x175 [2xM8] / N52 - magnetic separator

properties

properties	values
Cat. no.	130369
GTIN/EAN	5906301813170
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	175 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 - 6 poles
Casing Tube Thickness	1 mm
Manufacturing Tolerance	±1 mm

Magnetic properties of material N52

Specification / characteristics SM 25x175 [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

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%

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: 130369-2025

Measurement Calculator

Pulling force

Newtons (N)

Pounds (lbs)

Field Strength

Induction (T)

Just complete a single box, to let the tool fill in everything else instantly.

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A magnetic rod is the basic element of building grate separators and magnetic filters. 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). Such construction ensures full resistance to corrosion, water, oils, and acids.

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. For basic machine protection against pieces of iron, standard power is sufficient. High induction is necessary when contaminants are microscopic or weakly magnetic.

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.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Advantages

Besides their remarkable pulling force, neodymium magnets offer the following advantages:

They do not lose magnetism, even during approximately ten years – the decrease in strength is only ~1% (theoretically),
Neodymium magnets are characterized by remarkably resistant to loss of magnetic properties caused by external magnetic fields,
Thanks to the shimmering finish, the plating of Ni-Cu-Ni, gold, or silver gives an elegant appearance,
Magnetic induction on the surface of the magnet turns out to be very high,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
In view of the ability of free forming and customization to custom solutions, NdFeB magnets can be manufactured in a wide range of geometric configurations, which amplifies use scope,
Huge importance in electronics industry – they serve a role in data components, motor assemblies, advanced medical instruments, and multitasking production systems.
Thanks to their power density, small magnets offer high operating force, in miniature format,

Disadvantages

Disadvantages of neodymium magnets:

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a strong case, which not only protects them against impacts but also increases their durability
We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
Limited ability of making threads in the magnet and complex shapes - preferred is cover - magnet mounting.
Potential hazard resulting from small fragments of magnets can be dangerous, in case of ingestion, which becomes key in the aspect of protecting the youngest. Additionally, small elements of these magnets are able to complicate diagnosis medical in case of swallowing.
With mass production the cost of neodymium magnets can be a barrier,

Holding force characteristics

Maximum lifting force for a neodymium magnet – what affects it?

The force parameter is a result of laboratory testing conducted under standard conditions:

on a plate made of mild steel, effectively closing the magnetic field
whose transverse dimension is min. 10 mm
with an ground contact surface
without any clearance between the magnet and steel
for force applied at a right angle (pull-off, not shear)
at room temperature

What influences lifting capacity in practice

Effective lifting capacity is affected by working environment parameters, mainly (from priority):

Gap (betwixt the magnet and the plate), since even a tiny clearance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to paint, corrosion or debris).
Angle of force application – highest force is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the surface is usually several times lower (approx. 1/5 of the lifting capacity).
Element thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
Material type – the best choice is pure iron steel. Cast iron may generate lower lifting capacity.
Surface structure – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, however under parallel forces the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate reduces the lifting capacity.

Warnings

Magnets are brittle

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

Caution required

Use magnets with awareness. Their huge power can shock even professionals. Be vigilant and do not underestimate their power.

Electronic hazard

Data protection: Strong magnets can ruin data carriers and delicate electronics (heart implants, hearing aids, timepieces).

Impact on smartphones

Navigation devices and mobile phones are highly sensitive to magnetic fields. Direct contact with a strong magnet can permanently damage the internal compass in your phone.

Thermal limits

Keep cool. NdFeB magnets are sensitive to temperature. If you require operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Mechanical processing

Powder created during machining of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.

Warning for heart patients

For implant holders: Powerful magnets affect electronics. Keep minimum 30 cm distance or request help to handle the magnets.

Bodily injuries

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

Allergy Warning

Nickel alert: The nickel-copper-nickel coating consists of nickel. If skin irritation happens, immediately stop working with magnets and wear gloves.

This is not a toy

Neodymium magnets are not toys. Eating multiple magnets can lead to them pinching intestinal walls, which constitutes a severe health hazard and necessitates urgent medical intervention.

Attention! Learn more about risks in the article: Magnet Safety Guide.

SM 25x175 [2xM8] / N52 - magnetic separator

Not sure about your choice?

SM 25x175 [2xM8] / N52 - magnetic separator

Magnetic properties of material N52

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Material specification

Ecology and recycling (GPSR)

Pulling force

Field Strength

Other products

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UMC 20x6/3x7 / N38 - cylindrical magnetic holder

SM 18x275 [2xM5] / N42 - magnetic separator

MPL 40x10x4 / N38 - lamellar magnet

Advantages and disadvantages of Nd2Fe14B magnets.

Advantages

Disadvantages

Holding force characteristics

Maximum lifting force for a neodymium magnet – what affects it?

What influences lifting capacity in practice

Magnets are brittle

Caution required

Electronic hazard

Impact on smartphones

Thermal limits

Mechanical processing

Warning for heart patients

Bodily injuries

Allergy Warning

This is not a toy

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Advantages and disadvantages of Nd₂Fe₁₄B magnets.