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SM 18x250 [2xM5] / N42 - magnetic separator

magnetic separator

Catalog no 130275

GTIN/EAN: 5906301812777

Diameter Ø

18 mm [±1 mm]

Height

250 mm [±1 mm]

Weight

0.01 g

Magnetic Flux

~ 5 400 Gauss [±5%]

553.50 ZŁ with VAT / pcs + price for transport

450.00 ZŁ net + 23% VAT / pcs

bulk discounts:

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450.00 ZŁ

553.50 ZŁ

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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Call us +48 888 99 98 98 otherwise let us know by means of our online form the contact section.
Weight along with appearance of a neodymium magnet can be verified using our force calculator.

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SM 18x250 [2xM5] / N42 - magnetic separator

Specification / characteristics SM 18x250 [2xM5] / N42 - magnetic separator

properties

properties	values
Cat. no.	130275
GTIN/EAN	5906301812777
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	18 mm [±1 mm]
Height	250 mm [±1 mm]
Weight	0.01 g
Material Type	Stainless steel AISI 304 / A2
Magnetic Flux	~ 5 400 Gauss [±5%]
Size/Mount Quantity	2xM5
Polarity	circumferential - 11 poles
Casing Tube Thickness	1 mm
Manufacturing Tolerance	±1 mm

Magnetic properties of material N42

Specification / characteristics SM 18x250 [2xM5] / N42 - magnetic separator

properties	values	units
remenance Br [Min. - Max.] ?	12.9-13.2	kGs
remenance Br [Min. - Max.] ?	1290-1320	T
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 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

Engineering data and GPSR

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%

Sustainability

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

ul. ,

tel:

e-mail: kontakt@dhit.pl

id: 0000-2025

Quick Unit Converter

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SM 18x150 [2xM5] / N42 - magnetic separator

332.10 ZŁ brutto / pcs

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. Thanks to the use of strong neodymium magnets, the rod catches even metallic dust.

The construction relies on a sealed, welded stainless steel housing, polished smooth. The core is a precise magnetic system generating high induction (Gauss). Such construction ensures full resistance to corrosion, water, oils, and acids.

Metal filings stick to the surface very strongly, so cleaning requires strength or cleverness. 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. 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. You can choose a mounting method consistent with your technical design. Contact us for a quote on a non-standard dimension.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Strengths

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% (based on calculations),
They do not lose their magnetic properties even under strong external field,
By covering with a shiny layer of nickel, the element presents an modern look,
Magnetic induction on the top side of the magnet is extremely intense,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
Thanks to freedom in forming and the ability to modify to client solutions,
Key role in innovative solutions – they serve a role in hard drives, drive modules, diagnostic systems, as well as modern systems.
Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which allows their use in miniature devices

Weaknesses

Disadvantages of NdFeB magnets:

They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
Limited ability of making threads in the magnet and complex shapes - recommended is a housing - magnet mounting.
Health risk resulting from small fragments of magnets pose a threat, in case of ingestion, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these devices are able to be problematic in diagnostics medical after entering the body.
With large orders the cost of neodymium magnets is economically unviable,

Holding force characteristics

Maximum lifting capacity of the magnet – what affects it?

The force parameter is a theoretical maximum value executed under the following configuration:

with the use of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
with a cross-section minimum 10 mm
characterized by lack of roughness
with direct contact (no impurities)
for force applied at a right angle (in the magnet axis)
in temp. approx. 20°C

Determinants of lifting force in real conditions

It is worth knowing that the magnet holding may be lower depending on the following factors, starting with the most relevant:

Clearance – existence of foreign body (rust, dirt, air) acts as an insulator, which lowers capacity rapidly (even by 50% at 0.5 mm).
Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
Chemical composition of the base – mild steel gives the best results. Higher carbon content lower magnetic properties and holding force.
Surface condition – ground elements ensure maximum contact, which improves field saturation. Uneven metal reduce efficiency.
Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity testing was performed on a smooth plate of optimal thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.

Safety rules for work with neodymium magnets

Risk of cracking

Despite the nickel coating, neodymium is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Danger to pacemakers

Individuals with a ICD have to maintain an safe separation from magnets. The magnetism can stop the operation of the life-saving device.

Fire warning

Drilling and cutting of neodymium magnets carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Immense force

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

Permanent damage

Control the heat. Exposing the magnet above 80 degrees Celsius will destroy its magnetic structure and pulling force.

Cards and drives

Equipment safety: Strong magnets can damage payment cards and delicate electronics (pacemakers, hearing aids, mechanical watches).

Allergic reactions

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If an allergic reaction appears, immediately stop working with magnets and wear gloves.

Crushing force

Mind your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, crushing everything in their path. Be careful!

Phone sensors

Remember: neodymium magnets produce a field that interferes with sensitive sensors. Keep a separation from your mobile, device, and navigation systems.

Swallowing risk

NdFeB magnets are not intended for children. Eating multiple magnets may result in them attracting across intestines, which poses a severe health hazard and necessitates immediate surgery.

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

SM 18x250 [2xM5] / N42 - magnetic separator

Can't decide what to choose?

SM 18x250 [2xM5] / N42 - magnetic separator

Magnetic properties of material N42

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Sustainability

Pulling Force

Magnetic Field

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MPL 25x15x2 / N38 - lamellar magnet

AM lina fi 10 mm - magnetic accessories

SM 18x150 [2xM5] / N42 - magnetic separator

Advantages as well as disadvantages of Nd2Fe14B magnets.

Strengths

Weaknesses

Holding force characteristics

Maximum lifting capacity of the magnet – what affects it?

Determinants of lifting force in real conditions

Risk of cracking

Danger to pacemakers

Fire warning

Immense force

Permanent damage

Cards and drives

Allergic reactions

Crushing force

Phone sensors

Swallowing risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.