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SM 18x175 [2xM5] / 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 130272

GTIN: 5906301812746

Diameter Ø

18 mm [±1 mm]

Height

175 mm [±1 mm]

Weight

0.01 g

Magnetic Flux

~ 5 400 Gauss [±5%]

387.45 ZŁ with VAT / pcs + price for transport

315.00 ZŁ net + 23% VAT / pcs

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Weight as well as shape of magnetic components can be checked with our force calculator.

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SM 18x175 [2xM5] / N42 - magnetic separator

Specification / characteristics SM 18x175 [2xM5] / N42 - magnetic separator

properties

properties	values
Cat. no.	130272
GTIN	5906301812746
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	175 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 - 8 poles
Casing Tube Thickness	1 mm
Manufacturing Tolerance	±1 mm

Magnetic properties of material N42

Specification / characteristics SM 18x175 [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

Measurement Calculator

Force (Pull)

Force in kg

Force (N)

Pounds (lbs)

Field Strength

Induction (Gs)

Induction (T)

Put your value in a single field to generate results in all other fields right away.

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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.

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 Gauss value tells us how effectively and deeply the magnet will catch contaminants. 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.

We can produce a rod of non-standard length with any mounting termination. You can choose a mounting method consistent with your technical design. We ensure fast realization of special orders and technical advice.

Pros as well as cons of Nd₂Fe₁₄B magnets.

Strengths

Besides their exceptional magnetic power, neodymium magnets offer the following advantages:

Their magnetic field is durable, and after approximately ten years it decreases only by ~1% (according to research),
Magnets very well resist against demagnetization caused by foreign field sources,
A magnet with a metallic gold surface is more attractive,
The surface of neodymium magnets generates a maximum magnetic field – this is a distinguishing feature,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Due to the possibility of flexible shaping and customization to individualized needs, NdFeB magnets can be produced in a broad palette of shapes and sizes, which increases their versatility,
Huge importance in innovative solutions – they are used in data components, drive modules, advanced medical instruments, and industrial machines.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which enables their usage in miniature devices

Disadvantages

Disadvantages of neodymium 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 improves its resistance to damage
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 very resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
Limited ability of creating threads in the magnet and complex shapes - preferred is cover - mounting mechanism.
Health risk resulting from small fragments of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. Additionally, small components of these magnets can disrupt the diagnostic process medical in case of swallowing.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Maximum holding power of the magnet – what it depends on?

Breakaway force was determined for optimal configuration, assuming:

using a plate made of mild steel, functioning as a magnetic yoke
possessing a massiveness of minimum 10 mm to avoid saturation
with an ground contact surface
with total lack of distance (without paint)
during pulling in a direction vertical to the mounting surface
at ambient temperature room level

Impact of factors on magnetic holding capacity in practice

It is worth knowing that the application force may be lower depending on elements below, starting with the most relevant:

Gap between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Angle of force application – highest force is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is typically many 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 lifting capacity (the magnet "punches through" it).
Metal type – different alloys attracts identically. High carbon content weaken the interaction with the magnet.
Surface structure – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
Thermal conditions – NdFeB sinters have a negative temperature coefficient. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

Precautions when working with neodymium magnets

Danger to the youngest

Always store magnets away from children. Risk of swallowing is high, and the effects of magnets connecting inside the body are life-threatening.

Electronic devices

Intense magnetic fields can destroy records on payment cards, HDDs, and storage devices. Keep a distance of at least 10 cm.

Serious injuries

Big blocks can crush fingers in a fraction of a second. Under no circumstances put your hand betwixt two strong magnets.

Handling rules

Handle with care. Rare earth magnets attract from a distance and connect with massive power, often quicker than you can move away.

Operating temperature

Standard neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. Damage is permanent.

Allergy Warning

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If redness appears, cease working with magnets and use protective gear.

Threat to navigation

GPS units and mobile phones are highly susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Combustion hazard

Drilling and cutting of neodymium magnets carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Medical implants

For implant holders: Powerful magnets disrupt electronics. Maintain at least 30 cm distance or request help to work with the magnets.

Risk of cracking

Neodymium magnets are ceramic materials, meaning they are prone to chipping. Clashing of two magnets leads to them shattering into shards.

Caution! Need more info? Read our article: Are neodymium magnets dangerous?

SM 18x175 [2xM5] / N42 - magnetic separator

Need help making a decision?

SM 18x175 [2xM5] / N42 - magnetic separator

Magnetic properties of material N42

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Force (Pull)

Field Strength

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Pros as well as cons of Nd2Fe14B magnets.

Strengths

Disadvantages

Lifting parameters

Maximum holding power of the magnet – what it depends on?

Impact of factors on magnetic holding capacity in practice

Danger to the youngest

Electronic devices

Serious injuries

Handling rules

Operating temperature

Allergy Warning

Threat to navigation

Combustion hazard

Medical implants

Risk of cracking

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Pros as well as cons of Nd₂Fe₁₄B magnets.