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SM 25x125 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130367

GTIN: 5906301813156

Diameter Ø

25 mm [±1 mm]

Height

125 mm [±1 mm]

Weight

0.01 g

Magnetic Flux

~ 9 500 Gauss [±5%]

393.60 ZŁ with VAT / pcs + price for transport

320.00 ZŁ net + 23% VAT / pcs

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320.00 ZŁ

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354.24 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

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Specifications along with structure of neodymium magnets can be estimated on our magnetic mass calculator.

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SM 25x125 [2xM8] / N52 - magnetic separator

Specification / characteristics SM 25x125 [2xM8] / N52 - magnetic separator

properties

properties	values
Cat. no.	130367
GTIN	5906301813156
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	125 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 - 4 poles
Casing Tube Thickness	1 mm
Manufacturing Tolerance	±1 mm

Magnetic properties of material N52

Specification / characteristics SM 25x125 [2xM8] / N52 - magnetic separator

properties	values	units
remenance Br [Min. - Max.] ?	14.2-14.7	kGs
remenance Br [Min. - Max.] ?	1420-1470	T
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 106	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10-6	°C^-1
Young's modulus	1.7 x 104	kg/mm²

Quick Unit Converter

Force (Pull)

Kilograms (kg)

Force (N)

Pounds (lbs)

Magnetic Induction

Gauss (Gs)

Put your value in just one field to see the conversion for the other units immediately.

UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder

150.00 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 12x4 / N52 - cylindrical magnet

2.18 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 12x6 / N38 - cylindrical magnet

1.882 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

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

688.80 ZŁ brutto / pcs

It is the "heart" of every magnetic filter used in industry for cleaning raw materials. 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 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. You can use compressed air or special non-magnetic strippers (rings). 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. For the food and precision industry, we recommend the highest induction parameters.

Yes, as a manufacturer, we make rods of any length and diameter (standard is dia 25mm and 32mm). 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 rare earth magnets.

Benefits

Besides their tremendous field intensity, neodymium magnets offer the following advantages:

They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (based on calculations),
They retain their magnetic properties even under external field action,
A magnet with a shiny silver surface has better aesthetics,
Neodymium magnets create maximum magnetic induction on a small area, which increases force concentration,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
Possibility of custom forming and optimizing to individual conditions,
Versatile presence in electronics industry – they are commonly used in computer drives, electric motors, medical equipment, and multitasking production systems.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
Neodymium magnets lose their strength 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
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
Due to limitations in realizing threads and complicated forms in magnets, we recommend using a housing - magnetic mount.
Potential hazard related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the context of child health protection. Additionally, small elements of these magnets are able to complicate diagnosis medical in case of swallowing.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum lifting capacity of the magnet – what affects it?

Breakaway force was determined for ideal contact conditions, including:

with the contact of a yoke made of special test steel, guaranteeing maximum field concentration
with a cross-section of at least 10 mm
with an ideally smooth contact surface
with zero gap (no paint)
for force acting at a right angle (in the magnet axis)
in neutral thermal conditions

Determinants of lifting force in real conditions

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

Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
Steel thickness – too thin plate causes magnetic saturation, causing part of the flux to be lost to the other side.
Material type – ideal substrate is pure iron steel. Cast iron may attract less.
Surface quality – the more even the plate, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
Thermal factor – high temperature reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was determined with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the load capacity is reduced by as much as fivefold. In addition, even a small distance between the magnet and the plate lowers the lifting capacity.

Precautions when working with neodymium magnets

Powerful field

Handle magnets consciously. Their huge power can shock even professionals. Be vigilant and respect their force.

Power loss in heat

Watch the temperature. Heating the magnet above 80 degrees Celsius will destroy its properties and strength.

ICD Warning

For implant holders: Powerful magnets disrupt medical devices. Keep minimum 30 cm distance or ask another person to work with the magnets.

Risk of cracking

Beware of splinters. Magnets can explode upon violent connection, launching shards into the air. Eye protection is mandatory.

GPS and phone interference

GPS units and mobile phones are extremely susceptible to magnetic fields. Close proximity with a strong magnet can ruin the internal compass in your phone.

Bodily injuries

Pinching hazard: The pulling power is so great that it can result in hematomas, pinching, and even bone fractures. Use thick gloves.

Product not for children

Adult use only. Small elements can be swallowed, causing severe trauma. Store away from children and animals.

Allergy Warning

A percentage of the population have a contact allergy to nickel, which is the typical protective layer for neodymium magnets. Extended handling might lead to skin redness. We recommend wear safety gloves.

Flammability

Combustion risk: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.

Threat to electronics

Intense magnetic fields can destroy records on credit cards, HDDs, and storage devices. Stay away of at least 10 cm.

Attention! Details about risks in the article: Safety of working with magnets.

SM 25x125 [2xM8] / N52 - magnetic separator

Need help making a decision?

SM 25x125 [2xM8] / N52 - magnetic separator

Magnetic properties of material N52

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Force (Pull)

Magnetic Induction

See also proposals

UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder

MW 12x4 / N52 - cylindrical magnet

MW 12x6 / N38 - cylindrical magnet

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

Pros as well as cons of rare earth magnets.

Benefits

Weaknesses

Lifting parameters

Maximum lifting capacity of the magnet – what affects it?

Determinants of lifting force in real conditions

Powerful field

Power loss in heat

ICD Warning

Risk of cracking

GPS and phone interference

Bodily injuries

Product not for children

Allergy Warning

Flammability

Threat to electronics

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C