← previous
next →
Product available Ships today (order by 14:00) CO2 GPSR PPWR REACH

SM 28x200 [2xM8] / N52 - magnetic separator

magnetic separator

Catalog no 130517

GTIN/EAN: 5906301815044

Diameter Ø
28 mm [±1 mm]
Height
200 mm [±1 mm]
Weight
953.34 g
Magnetic Flux
~ 8 500 Gauss [±5%]

How we measure these parameters — certificates and measurements

see technical data »

530.00 zł net / pcs

651.90 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?
Quantity
Net
Gross
price from 1 pcs
530.00 zł
651.90 zł
price from 5 pcs
503.50 zł
619.31 zł
price from 10 pcs
477.00 zł
586.71 zł

Frequently asked questions

How do I choose a separator for fine contamination and check availability?
Start with the size and type of contaminant, the material flow and the working surface. Compare the magnetic-field data and dimensions stated on the selected product card, and check current availability there.
Where can I order a separator for a production line, and what should I check?
Match the device to the installation dimensions, material flow, cleaning method and housing requirements. A drawing or the dimensions of the transfer point help determine whether a catalogue model fits or a custom version is needed.
How can I verify a separator's declared magnetic parameters before purchase?
Ask for the measured value, the point of measurement and the method or instrument used. A field-strength figure without its measurement conditions cannot be compared reliably with another product.
Can a magnetic beam withstand continuous work on a production line?
Check the construction, mounting and cleaning procedure for the chosen beam. Captured metal must be removed regularly; a layer of particles can reduce effective separation even when the magnets themselves are sound.
What roller design is suitable for a dusty environment?
Check the bearing protection, surface finish and cleaning access of the selected model. Dust accumulation and abrasion depend on the installation, so specify the actual process conditions before choosing a version.
How do I choose the size of a hand-held separator?
Match the rod diameter and length to the container and material depth, and consider the tool's weight for repeated manual work. Use the dimensions and magnetic data on the current product card.
What is a hand-held separator for, and how is it different from a built-in rod?
A built-in rod stays in the process line. A hand-held separator is moved through a material sample or container and then cleaned. It is useful for spot checks or occasional cleanup when permanent installation is not required.
Which separator type suits a small production plant?
Choose by the point in the process: a grate at a hopper, a beam over a conveyor, a built-in rod in a chute or pipe, or a hand-held tool for spot checks. A magnetic gripper handles steel parts rather than separating contamination.

Guides from the knowledge base

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

Order by 14:00 and we’ll ship today!

Detailed specification - SM 28x200 [2xM8] / N52 - magnetic separator

Specification / characteristics - SM 28x200 [2xM8] / N52 - magnetic separator

properties
properties values
Cat. no. 130517
GTIN/EAN 5906301815044
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 28 mm [±1 mm]
Height 200 mm [±1 mm]
Weight 953.34 g
Material Type Stainless steel AISI 304 / A2
Magnetic Flux ~ 8 500 Gauss [±5%]
Size/Mount Quantity M8x2
Polarity circumferential - 7 poles
Casing Tube Thickness 1 mm
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics SM 28x200 [2xM8] / N52 - magnetic separator
properties values units
Remanence Br ? 14.2-14.7 kGs
Remanence Br ? 1420-1470 mT
Coercivity bHc ? 10.8-12.5 kOe
Coercivity bHc ? 860-995 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 48-53 BH max MGOe
Energy product BHmax ? 380-422 BH max KJ/m
Maximum working temperature ? ≤ 60 °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 310 °C
Curie Temperature TF 590 °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 28x200 [2xM8] / N52

Parameter Value Description / Unit
Diameter (Ø) 28 mm
Total length 200 mm (L)
Active length 164 mm
Section count 7 modules
Dead zone 36 mm (2x 18mm starter)
Weight (est.) ~936 g
Active area 144 cm² (Area)
Housing material AISI 304 1.4301 (Inox)
Surface finish Ra < 0.8 µm Polished
Temp. class 60°C N52
Force loss (at max °C) -8.6% Reversible loss (physics)
Force (calculated) 22.7 kg (theor.)
Induction (surface) ~8 500 Gauss (Max)
Max T = 60°C. Construction data for M8/M10 thread series.

Chart 2: Field profile (7 sections)

Simulation: 7 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: 130517-2026
Magnet Unit Converter

Force (pull)

Field Strength

Put your value in a single field to receive results in all other fields immediately.

See more deals

MPL 50x30x4 / N38 - lamellar magnet
Product available Ships today (order by 14:00)

MPL 50x30x4 / N38 - lamellar magnet

25.83 zł brutto / pcs
ZM XMAG2 105 elementów - magnetic toy
Product available Ships today (order by 14:00)

ZM XMAG2 105 elementów - magnetic toy

49.20 zł brutto / pcs
UMP 97x40 [M8+M10] GW F300 Lina / N38 - search holder
Product available Ships today (order by 14:00)

UMP 97x40 [M8+M10] GW F300 Lina / N38 - search holder

370.00 zł brutto / pcs
MW 14.9x10 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 14.9x10 / N38 - cylindrical magnet

8.24 zł brutto / pcs
It is the "heart" of every magnetic filter used in industry for cleaning raw materials. 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 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.
Metal contaminants are strongly attracted, so removing them with a bare hand or glove can be difficult. 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. 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). The rod end is strictly adapted to the fastening system in your device. We ensure fast realization of special orders and technical advice.

Advantages as well as disadvantages of rare earth magnets.

Advantages

Besides their durability, neodymium magnets are valued for these benefits:
  • Their magnetic field is maintained, and after around 10 years it decreases only by ~1% (theoretically),
  • Magnets perfectly resist against demagnetization caused by ambient magnetic noise,
  • The use of an refined layer of noble metals (nickel, gold, silver) causes the element to present itself better,
  • The surface of neodymium magnets generates a unique magnetic field – this is a distinguishing feature,
  • 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 versatility in forming and the ability to adapt to complex applications,
  • Universal use in innovative solutions – they are used in mass storage devices, electric motors, diagnostic systems, as well as other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which allows their use in small systems

Disadvantages

Drawbacks and weaknesses of neodymium magnets: application proposals
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
  • Do not exceed this material temperature limit: 60°C. Overheating may permanently weaken the magnet.
  • They oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • We recommend casing - magnetic mount, due to difficulties in creating threads inside the magnet and complicated shapes.
  • Health risk to health – tiny shards of magnets pose a threat, if swallowed, which gains importance in the context of child health protection. It is also worth noting that tiny parts of these magnets are able to complicate diagnosis medical when they are in the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Lifting parameters

Highest magnetic holding force – what it depends on?

The lifting capacity listed is a theoretical maximum value executed under the following configuration:
  • using a plate made of low-carbon steel, acting as a ideal flux conductor
  • whose transverse dimension is min. 10 mm
  • with a plane perfectly flat
  • under conditions of ideal adhesion (metal-to-metal)
  • during pulling in a direction perpendicular to the mounting surface
  • at ambient temperature approx. 20 degrees Celsius

Lifting capacity in practice – influencing factors

Please note that the application force will differ subject to elements below, in order of importance:
  • Distance – existence of any layer (rust, tape, air) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Loading method – catalog parameter refers to detachment vertically. When slipping, the magnet holds much less (often approx. 20-30% of maximum force).
  • Base massiveness – insufficiently thick sheet causes magnetic saturation, causing part of the flux to be escaped into the air.
  • Plate material – mild steel attracts best. Alloy admixtures lower magnetic permeability and lifting capacity.
  • Smoothness – ideal contact is obtained only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Thermal factor – high temperature weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the holding force is lower. Moreover, even a slight gap between the magnet and the plate lowers the holding force.

H&S for magnets
GPS Danger

GPS units and smartphones are extremely susceptible to magnetic fields. Close proximity with a strong magnet can decalibrate the sensors in your phone.

Medical interference

People with a pacemaker should keep an large gap from magnets. The magnetic field can disrupt the functioning of the life-saving device.

Do not overheat magnets

Monitor thermal conditions. Heating the magnet to high heat will destroy its magnetic structure and pulling force.

Respect the power

Be careful. Rare earth magnets attract from a distance and snap with huge force, often quicker than you can react.

Cards and drives

Avoid bringing magnets close to a purse, laptop, or TV. The magnetism can irreversibly ruin these devices and erase data from cards.

Product not for children

NdFeB magnets are not toys. Swallowing multiple magnets may result in them connecting inside the digestive tract, which poses a direct threat to life and requires urgent medical intervention.

Dust is flammable

Powder produced during machining of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.

Eye protection

Beware of splinters. Magnets can fracture upon uncontrolled impact, launching shards into the air. We recommend safety glasses.

Avoid contact if allergic

Certain individuals experience a contact allergy to Ni, which is the common plating for neodymium magnets. Extended handling can result in a rash. It is best to use safety gloves.

Bone fractures

Large magnets can crush fingers instantly. Do not place your hand betwixt two strong magnets.

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