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SM 32x400 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130302

GTIN/EAN: 5906301812951

5.00

Diameter Ø

32 mm [±1 mm]

Height

400 mm [±1 mm]

Weight

2145 g

Magnetic Flux

~ 8 000 Gauss [±5%]

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1340.70 ZŁ with VAT / pcs + price for transport

1090.00 ZŁ net + 23% VAT / pcs

970.00 ZŁ net was the lowest price in the last 30 days

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Technical - SM 32x400 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 32x400 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130302
GTIN/EAN 5906301812951
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 400 mm [±1 mm]
Weight 2145 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 15 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 32x400 [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 32x400 [2xM8] / N42

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 400 mm (L)
Active length 364 mm
Section count 15 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~2445 g
Active area 366 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)
Max T = 80°C. Construction data for M8/M10 thread series.

Chart 2: Field profile (15 sections)

Simulation: 15 magnetic modules (pitch 23 mm).

Chart 3: Temperature performance

Technical and environmental data
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: 130302-2026
Quick Unit Converter
Force (pull)
Magnetic Induction
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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 outer layer is hygienic acid-resistant steel, approved for food contact. The center is filled with NdFeB magnets and pole pieces, arranged to maximize the field on the tube surface. 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 fulfill individual orders for bars perfectly matched to your machine or separator. 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 and weaknesses of Nd2Fe14B magnets.

Benefits

Besides their high retention, neodymium magnets are valued for these benefits:
  • They retain full power for almost ten years – the drop is just ~1% (based on simulations),
  • They retain their magnetic properties even under external field action,
  • The use of an elegant layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • Magnetic induction on the working part of the magnet is impressive,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Considering the potential of precise forming and adaptation to specialized needs, NdFeB magnets can be produced in a broad palette of forms and dimensions, which expands the range of possible applications,
  • Universal use in future technologies – they are used in magnetic memories, drive modules, precision medical tools, and modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which makes them useful in compact constructions

Limitations

Disadvantages of NdFeB magnets:
  • At strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • They rust in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in realizing nuts and complicated forms in magnets, we propose using casing - magnetic mount.
  • Potential hazard resulting from small fragments of magnets can be dangerous, in case of ingestion, which gains importance in the context of child safety. Furthermore, small components of these products can disrupt the diagnostic process medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum lifting capacity of the magnet – what contributes to it?

Information about lifting capacity was defined for the most favorable conditions, taking into account:
  • on a block made of mild steel, effectively closing the magnetic field
  • with a thickness minimum 10 mm
  • with an ideally smooth touching surface
  • under conditions of no distance (metal-to-metal)
  • for force applied at a right angle (pull-off, not shear)
  • at conditions approx. 20°C

Determinants of lifting force in real conditions

Bear in mind that the magnet holding may be lower subject to elements below, in order of importance:
  • Gap between surfaces – every millimeter of distance (caused e.g. by veneer or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Direction of force – highest force is obtained only during perpendicular pulling. The force required to slide of the magnet along the surface is typically many times smaller (approx. 1/5 of the lifting capacity).
  • Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Metal type – different alloys reacts the same. High carbon content weaken the interaction with the magnet.
  • Plate texture – ground elements ensure maximum contact, which increases field saturation. Uneven metal reduce efficiency.
  • Temperature – temperature increase results in weakening of induction. Check the maximum operating temperature for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Additionally, even a minimal clearance between the magnet and the plate decreases the load capacity.

Safety rules for work with NdFeB magnets
ICD Warning

Patients with a heart stimulator must maintain an safe separation from magnets. The magnetism can disrupt the functioning of the life-saving device.

GPS and phone interference

Navigation devices and smartphones are highly sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.

Threat to electronics

Equipment safety: Neodymium magnets can ruin data carriers and sensitive devices (pacemakers, medical aids, timepieces).

Do not drill into magnets

Powder created during machining of magnets is flammable. Do not drill into magnets unless you are an expert.

Metal Allergy

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If skin irritation appears, immediately stop handling magnets and wear gloves.

Bodily injuries

Risk of injury: The attraction force is so immense that it can cause blood blisters, crushing, and broken bones. Protective gloves are recommended.

Caution required

Before use, check safety instructions. Sudden snapping can break the magnet or injure your hand. Be predictive.

Magnet fragility

Neodymium magnets are ceramic materials, which means they are prone to chipping. Collision of two magnets leads to them shattering into small pieces.

Do not overheat magnets

Standard neodymium magnets (grade N) lose power when the temperature exceeds 80°C. The loss of strength is permanent.

Product not for children

NdFeB magnets are not toys. Swallowing a few magnets can lead to them pinching intestinal walls, which poses a severe health hazard and necessitates immediate surgery.

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