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SM 32x500 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130374

GTIN/EAN: 5906301813224

5.00

Diameter Ø

32 mm [±1 mm]

Height

500 mm [±1 mm]

Weight

2670 g

Magnetic Flux

~ 8 000 Gauss [±5%]

1488.30 with VAT / pcs + price for transport

1210.00 ZŁ net + 23% VAT / pcs

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Weight along with shape of a neodymium magnet can be checked with our magnetic calculator.

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Technical details - SM 32x500 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 32x500 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130374
GTIN/EAN 5906301813224
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 500 mm [±1 mm]
Weight 2670 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 19 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 32x500 [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

Table 1: Rod construction
SM 32x500 [2xM8] / N42

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 500 mm (L)
Active length 464 mm
Section count 20 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~3056 g
Active area 466 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) 26.2 kg (theor.)
Induction (surface) ~8 000 Gauss (Max)

Chart 2: Field profile (20 sections)

Chart 3: Temperature performance

Technical specification and ecology
Chemical composition
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: 130374-2026
Quick Unit Converter
Pulling force

Magnetic Field

Other products

This product serves to effectively catch ferromagnetic contaminants from bulk and liquid products. 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 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. 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.
Magnetic induction measured in Gauss (Gs) determines the density of magnetic flux on the rod surface. The economical version (8kGs) handles large pieces of metal perfectly. 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). You can choose a mounting method consistent with your technical design. Contact us for a quote on a non-standard dimension.

Pros as well as cons of rare earth magnets.

Strengths

Apart from their notable magnetic energy, neodymium magnets have these key benefits:
  • They retain magnetic properties for almost 10 years – the drop is just ~1% (in theory),
  • Magnets very well protect themselves against demagnetization caused by external fields,
  • In other words, due to the reflective surface of silver, the element gains visual value,
  • Neodymium magnets deliver maximum magnetic induction on a contact point, which ensures high operational effectiveness,
  • Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures approaching 230°C and above...
  • Thanks to the ability of flexible forming and customization to individualized requirements, neodymium magnets can be produced in a variety of shapes and sizes, which makes them more universal,
  • Huge importance in electronics industry – they are utilized in data components, drive modules, precision medical tools, and complex engineering applications.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Cons of neodymium magnets and ways of using them
  • At strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of making nuts in the magnet and complicated forms - recommended is casing - magnet mounting.
  • Potential hazard resulting from small fragments of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child health protection. Additionally, small components of these devices can disrupt the diagnostic process medical in case of swallowing.
  • Due to neodymium price, their price is relatively high,

Pull force analysis

Detachment force of the magnet in optimal conditionswhat affects it?

The lifting capacity listed is a theoretical maximum value performed under specific, ideal conditions:
  • with the use of a yoke made of low-carbon steel, ensuring maximum field concentration
  • whose transverse dimension equals approx. 10 mm
  • with an ground touching surface
  • without any clearance between the magnet and steel
  • under vertical application of breakaway force (90-degree angle)
  • at temperature room level

Determinants of practical lifting force of a magnet

Holding efficiency is influenced by specific conditions, mainly (from priority):
  • Gap between magnet and steel – every millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
  • Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
  • Material composition – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
  • Plate texture – smooth surfaces ensure maximum contact, which improves field saturation. Rough surfaces weaken the grip.
  • Thermal environment – heating the magnet causes a temporary drop of induction. Check the maximum operating temperature for a given model.

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under perpendicular forces, in contrast under parallel forces the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.

Warnings
Crushing risk

Danger of trauma: The pulling power is so immense that it can cause blood blisters, pinching, and broken bones. Protective gloves are recommended.

Allergic reactions

Certain individuals experience a contact allergy to Ni, which is the common plating for NdFeB magnets. Frequent touching might lead to skin redness. We strongly advise wear safety gloves.

Handling guide

Handle magnets consciously. Their powerful strength can shock even professionals. Be vigilant and do not underestimate their force.

Eye protection

Watch out for shards. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.

Compass and GPS

Be aware: neodymium magnets generate a field that confuses sensitive sensors. Maintain a separation from your mobile, device, and GPS.

Safe distance

Equipment safety: Strong magnets can damage data carriers and delicate electronics (pacemakers, medical aids, timepieces).

No play value

Only for adults. Tiny parts can be swallowed, causing intestinal necrosis. Store away from kids and pets.

Fire warning

Mechanical processing of NdFeB material carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Danger to pacemakers

Warning for patients: Powerful magnets affect electronics. Maintain minimum 30 cm distance or request help to handle the magnets.

Maximum temperature

Regular neodymium magnets (grade N) lose magnetization when the temperature exceeds 80°C. This process is irreversible.

Security! Learn more about risks in the article: Magnet Safety Guide.