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SM 32x175 [2xM8] / N42 - magnetic separator

magnetic separator

Catalog no 130353

GTIN/EAN: 5906301813019

Diameter Ø

32 mm [±1 mm]

Height

175 mm [±1 mm]

Weight

940 g

Magnetic Flux

~ 8 000 Gauss [±5%]

528.90 with VAT / pcs + price for transport

430.00 ZŁ net + 23% VAT / pcs

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Detailed specification - SM 32x175 [2xM8] / N42 - magnetic separator

Specification / characteristics - SM 32x175 [2xM8] / N42 - magnetic separator

properties
properties values
Cat. no. 130353
GTIN/EAN 5906301813019
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 175 mm [±1 mm]
Weight 940 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 000 Gauss [±5%]
Size/Mount Quantity 2xM8
Polarity circumferential - 6 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics SM 32x175 [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 32x175 [2xM8] / N42

Parameter Value Description / Unit
Diameter (Ø) 32 mm
Total length 175 mm (L)
Active length 139 mm
Section count 6 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~1070 g
Active area 140 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 (6 sections)

Chart 3: Temperature performance

Technical and environmental data
Elemental analysis
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: 130353-2026
Measurement Calculator
Magnet pull force

Magnetic Induction

Other deals

This product serves to effectively catch ferromagnetic contaminants from bulk and liquid products. 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 construction relies on a sealed, welded stainless steel housing, polished smooth. 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. You can use compressed air or special non-magnetic strippers (rings). 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. 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. We ensure fast realization of special orders and technical advice.

Strengths as well as weaknesses of neodymium magnets.

Benefits

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • Their strength remains stable, and after around 10 years it decreases only by ~1% (theoretically),
  • They maintain their magnetic properties even under external field action,
  • A magnet with a shiny nickel surface has better aesthetics,
  • They are known for high magnetic induction at the operating surface, which increases their power,
  • Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
  • Possibility of individual forming as well as adapting to specific needs,
  • Fundamental importance in modern industrial fields – they are commonly used in hard drives, brushless drives, medical devices, also complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which enables their usage in miniature devices

Weaknesses

Characteristics of disadvantages of neodymium magnets and ways of using them
  • Brittleness is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a strong case, which not only protects them against impacts but also increases their durability
  • Neodymium magnets lose 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 oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in creating threads and complex forms in magnets, we recommend using a housing - magnetic mechanism.
  • Potential hazard resulting from small fragments of magnets are risky, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Additionally, small components of these magnets can complicate diagnosis 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

Pull force analysis

Highest magnetic holding forcewhat it depends on?

Holding force of 0.00 kg is a theoretical maximum value conducted under the following configuration:
  • using a plate made of mild steel, acting as a circuit closing element
  • possessing a thickness of minimum 10 mm to avoid saturation
  • characterized by lack of roughness
  • with direct contact (without impurities)
  • under perpendicular application of breakaway force (90-degree angle)
  • at room temperature

Key elements affecting lifting force

It is worth knowing that the application force will differ influenced by the following factors, starting with the most relevant:
  • Clearance – the presence of any layer (paint, dirt, air) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
  • Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
  • Steel grade – ideal substrate is pure iron steel. Hardened steels may attract less.
  • Surface finish – full contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
  • Temperature – temperature increase causes a temporary drop of induction. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity was assessed by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under shearing force the holding force is lower. In addition, even a slight gap between the magnet and the plate decreases the load capacity.

Warnings
Keep away from electronics

An intense magnetic field negatively affects the functioning of compasses in smartphones and navigation systems. Keep magnets near a device to avoid breaking the sensors.

Product not for children

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

Magnets are brittle

Beware of splinters. Magnets can fracture upon uncontrolled impact, launching shards into the air. Wear goggles.

Metal Allergy

A percentage of the population have a hypersensitivity to nickel, which is the common plating for neodymium magnets. Frequent touching can result in skin redness. It is best to use safety gloves.

Conscious usage

Before starting, check safety instructions. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.

Heat warning

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

Crushing risk

Mind your fingers. Two large magnets will join immediately with a force of several hundred kilograms, crushing everything in their path. Exercise extreme caution!

Machining danger

Powder generated during grinding of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Life threat

For implant holders: Powerful magnets disrupt electronics. Maintain at least 30 cm distance or ask another person to handle the magnets.

Keep away from computers

Avoid bringing magnets near a purse, computer, or screen. The magnetic field can irreversibly ruin these devices and wipe information from cards.

Warning! Looking for details? Check our post: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98