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neodymium magnets

We provide blue color magnetic Nd2Fe14B - our offer. Practically all "neodymium magnets" in our store are available for immediate purchase (check the list). Check out the magnet price list for more details check the magnet price list

Magnet for water searching F200 GOLD

Where to purchase strong neodymium magnet? Magnetic holders in airtight, solid enclosure are ideally suited for use in challenging weather conditions, including during rain and snow check

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Magnetic holders can be applied to improve manufacturing, underwater exploration, or locating meteors made of ore see more...

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SM 32x450 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130303

GTIN/EAN: 5906301812968

5.00

Diameter Ø

32 mm [±1 mm]

Height

450 mm [±1 mm]

Weight

2410 g

Magnetic Flux

~ 8 000 Gauss [±5%]

1340.70 ZŁ with VAT / pcs + price for transport

1090.00 ZŁ net + 23% VAT / pcs

bulk discounts:

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price from 1 pcs
1090.00 ZŁ
1340.70 ZŁ
price from 5 pcs
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1206.63 ZŁ
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Lifting power and shape of magnetic components can be checked using our power calculator.

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SM 32x450 [2xM8] / N42 - magnetic separator

Specification / characteristics SM 32x450 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130303
GTIN/EAN 5906301812968
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 32 mm [±1 mm]
Height 450 mm [±1 mm]
Weight 2410 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 17 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 32x450 [2xM8] / 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
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%
Environmental data
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: 130303-2025
Magnet Unit Converter
Magnet Pull Force
Field Strength
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A magnetic rod is the basic element of building grate separators and magnetic filters. It is mounted in chutes, hoppers, and pipelines to protect production machines from failure. 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.
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. 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. 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. Contact us for a quote on a non-standard dimension.

Strengths as well as weaknesses of neodymium magnets.

Strengths
Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
  • They show high resistance to demagnetization induced by external disturbances,
  • Thanks to the metallic finish, the plating of Ni-Cu-Ni, gold-plated, or silver gives an professional appearance,
  • Neodymium magnets generate maximum magnetic induction on a small area, which increases force concentration,
  • 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 the option of flexible molding and customization to unique projects, NdFeB magnets can be produced in a wide range of forms and dimensions, which amplifies use scope,
  • Wide application in advanced technology sectors – they find application in HDD drives, electric motors, precision medical tools, and technologically advanced constructions.
  • Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Cons
Disadvantages of neodymium magnets:
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop 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 extremely resistant to heat
  • They rust in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • We suggest a housing - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complicated forms.
  • Health risk to health – tiny shards of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that small elements of these products are able to be problematic in diagnostics medical after entering the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Holding force characteristics

Maximum magnetic pulling force – what it depends on?
Breakaway force was determined for the most favorable conditions, assuming:
  • with the contact of a sheet made of special test steel, guaranteeing full magnetic saturation
  • with a thickness minimum 10 mm
  • with a plane free of scratches
  • without the slightest air gap between the magnet and steel
  • under axial force direction (90-degree angle)
  • at conditions approx. 20°C
Magnet lifting force in use – key factors
It is worth knowing that the working load may be lower subject to the following factors, starting with the most relevant:
  • Clearance – the presence of any layer (rust, tape, air) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
  • Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of generating force.
  • Metal type – different alloys reacts the same. Alloy additives weaken the attraction effect.
  • Surface structure – the more even the surface, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
  • Thermal environment – heating the magnet causes a temporary drop of force. Check the thermal limit for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under parallel forces the load capacity is reduced by as much as fivefold. Moreover, even a minimal clearance between the magnet and the plate decreases the holding force.

Safety rules for work with neodymium magnets
Danger to the youngest

Always keep magnets out of reach of children. Choking hazard is significant, and the effects of magnets connecting inside the body are tragic.

Power loss in heat

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

Caution required

Handle magnets consciously. Their immense force can shock even experienced users. Plan your moves and respect their power.

Safe distance

Device Safety: Strong magnets can damage payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Precision electronics

A powerful magnetic field interferes with the operation of compasses in smartphones and navigation systems. Keep magnets near a device to prevent breaking the sensors.

Dust is flammable

Dust created during machining of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Warning for allergy sufferers

Some people suffer from a contact allergy to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching might lead to a rash. It is best to use safety gloves.

Physical harm

Watch your fingers. Two powerful magnets will join immediately with a force of massive weight, crushing anything in their path. Be careful!

Implant safety

For implant holders: Powerful magnets disrupt medical devices. Maintain at least 30 cm distance or request help to handle the magnets.

Eye protection

Protect your eyes. Magnets can explode upon uncontrolled impact, launching shards into the air. We recommend safety glasses.

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

e-mail: bok@dhit.pl

tel: +48 888 99 98 98