Neodymium magnets: power you're looking for

Need strong magnetic field? We offer complete range of disc, cylindrical and ring magnets. Perfect for for domestic applications, workshop and industrial tasks. See products available immediately.

discover magnet catalog

Magnets for seabed exploration

Discover your passion with treasure salvaging! Our specialized grips (F200, F400) provide grip certainty and immense power. Solid, corrosion-resistant housing and reinforced ropes are reliable in any water.

choose your water magnet

Magnetic solutions for business

Reliable solutions for fixing without drilling. Threaded grips (M8, M10, M12) guarantee instant organization of work on warehouses. They are indispensable mounting lighting, detectors and ads.

check industrial applications

🚀 Lightning processing: orders by 14:00 shipped within 24h!

Dhit sp. z o.o.
Product available Ships tomorrow

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

magnetic separator

Catalog no 130271

GTIN/EAN: 5906301812739

Diameter Ø

18 mm [±1 mm]

Height

150 mm [±1 mm]

Weight

0.01 g

Magnetic Flux

~ 5 400 Gauss [±5%]

332.10 with VAT / pcs + price for transport

270.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
270.00 ZŁ
332.10 ZŁ
price from 10 pcs
256.50 ZŁ
315.50 ZŁ
price from 20 pcs
243.00 ZŁ
298.89 ZŁ
Hunting for a discount?

Contact us by phone +48 888 99 98 98 or contact us via form the contact form page.
Force as well as form of magnets can be calculated with our magnetic calculator.

Orders submitted before 14:00 will be dispatched today!

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

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

properties
properties values
Cat. no. 130271
GTIN/EAN 5906301812739
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 150 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 - 7 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 18x150 [2xM5] / N42 - magnetic separator
properties values units
remenance Br [min. - max.] ? 12.9-13.2 kGs
remenance Br [min. - max.] ? 1290-1320 mT
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

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

Table 1: Rod construction
SM 18x150 [2xM5] / N42

Parameter Value Description / Unit
Diameter (Ø) 18 mm
Total length 150 mm (L)
Active length 114 mm
Section count 4 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~290 g
Active area 64 cm² (Area)
Housing material AISI 304 1.4301 (Inox)
Surface finish Ra < 0.8 µm Polished
Temp. class 80°C Standard (N)
Force loss (at max °C) -12.8% Reversible loss (physics)
Force (calculated) 3.8 kg (theor.)
Induction (surface) ~5 400 Gauss (Max)

Chart 2: Field profile (4 sections)

Chart 3: Temperature performance

Technical specification and ecology
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: 130271-2026
Measurement Calculator
Pulling force

Field Strength

View more offers

It is the "heart" of every magnetic filter used in industry for cleaning raw materials. 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). 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.
Due to the high power of the magnet, direct removal of filings can be troublesome and time-consuming. 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.
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. High induction is necessary when contaminants are microscopic or weakly magnetic.
Yes, as a manufacturer, we make rods of any length and diameter (standard is dia 25mm and 32mm). 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.

Strengths and weaknesses of Nd2Fe14B magnets.

Benefits

Apart from their superior holding force, neodymium magnets have these key benefits:
  • Their power is maintained, and after around 10 years it drops only by ~1% (according to research),
  • They are extremely resistant to demagnetization induced by external field influence,
  • In other words, due to the glossy layer of nickel, the element gains a professional look,
  • The surface of neodymium magnets generates a powerful magnetic field – this is a distinguishing feature,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Possibility of individual machining as well as adjusting to precise applications,
  • Fundamental importance in advanced technology sectors – they are utilized in computer drives, drive modules, advanced medical instruments, and other advanced devices.
  • Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Disadvantages

Problematic aspects of neodymium magnets: tips and applications.
  • At strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
  • NdFeB magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
  • Limited ability of producing nuts in the magnet and complex forms - preferred is a housing - mounting mechanism.
  • Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small elements of these magnets can disrupt the diagnostic process medical in case of swallowing.
  • With large orders the cost of neodymium magnets is a challenge,

Pull force analysis

Maximum holding power of the magnet – what contributes to it?

Breakaway force was defined for optimal configuration, assuming:
  • with the use of a yoke made of special test steel, guaranteeing maximum field concentration
  • with a thickness minimum 10 mm
  • characterized by even structure
  • with zero gap (without coatings)
  • for force applied at a right angle (in the magnet axis)
  • at ambient temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

During everyday use, the actual holding force is determined by many variables, ranked from the most important:
  • Gap (between the magnet and the metal), as even a microscopic distance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
  • Direction of force – maximum parameter is available only during perpendicular pulling. The resistance to sliding of the magnet along the plate is typically many times lower (approx. 1/5 of the lifting capacity).
  • Base massiveness – too thin plate does not close the flux, causing part of the flux to be wasted into the air.
  • Metal type – different alloys attracts identically. High carbon content weaken the attraction effect.
  • Surface structure – the more even the surface, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
  • Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently damage the magnet.

Lifting capacity testing was performed on a smooth plate of suitable thickness, under perpendicular forces, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

H&S for magnets
Immense force

Before use, read the rules. Sudden snapping can break the magnet or hurt your hand. Think ahead.

Sensitization to coating

Allergy Notice: The nickel-copper-nickel coating contains nickel. If an allergic reaction appears, cease handling magnets and use protective gear.

GPS Danger

An intense magnetic field interferes with the operation of compasses in phones and GPS navigation. Do not bring magnets close to a device to avoid breaking the sensors.

Swallowing risk

Only for adults. Tiny parts pose a choking risk, causing serious injuries. Store away from children and animals.

Cards and drives

Powerful magnetic fields can corrupt files on payment cards, HDDs, and storage devices. Keep a distance of min. 10 cm.

Crushing force

Watch your fingers. Two large magnets will join instantly with a force of massive weight, destroying everything in their path. Exercise extreme caution!

Medical implants

Warning for patients: Strong magnetic fields affect medical devices. Maintain minimum 30 cm distance or request help to handle the magnets.

Magnet fragility

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

Power loss in heat

Do not overheat. NdFeB magnets are susceptible to heat. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Fire risk

Dust produced during grinding of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Security! Learn more about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98