SM 32x400 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130302
GTIN/EAN: 5906301812951
Diameter Ø
32 mm [±1 mm]
Height
400 mm [±1 mm]
Weight
2145 g
Magnetic Flux
~ 8 000 Gauss [±5%]
1193.10 ZŁ with VAT / pcs + price for transport
970.00 ZŁ net + 23% VAT / pcs
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Technical of the product - SM 32x400 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 32x400 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130302 |
| GTIN/EAN | 5906301812951 |
| Production/Distribution | Dhit sp. z o.o. |
| 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
| 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
| 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 |
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 |
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Strengths as well as weaknesses of neodymium magnets.
Pros
- They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
- They possess excellent resistance to magnetism drop when exposed to opposing magnetic fields,
- Thanks to the elegant finish, the surface of nickel, gold-plated, or silver gives an visually attractive appearance,
- Magnets have impressive magnetic induction on the outer side,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Thanks to modularity in constructing and the ability to customize to client solutions,
- Significant place in modern technologies – they find application in data components, electromotive mechanisms, medical equipment, as well as modern systems.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Cons
- At very 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.
- Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- We suggest cover - magnetic mount, due to difficulties in producing nuts inside the magnet and complicated shapes.
- Health risk resulting from small fragments of magnets can be dangerous, if swallowed, which becomes key in the context of child safety. It is also worth noting that small elements of these magnets can disrupt the diagnostic process medical in case of swallowing.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Holding force characteristics
Detachment force of the magnet in optimal conditions – what it depends on?
- using a plate made of high-permeability steel, acting as a ideal flux conductor
- with a cross-section of at least 10 mm
- with a surface perfectly flat
- with total lack of distance (without paint)
- for force acting at a right angle (pull-off, not shear)
- at conditions approx. 20°C
Magnet lifting force in use – key factors
- Distance – existence of any layer (paint, tape, gap) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
- Direction of force – highest force is reached only during perpendicular pulling. The shear force of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
- Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
- Steel grade – the best choice is high-permeability steel. Cast iron may generate lower lifting capacity.
- Surface finish – full contact is obtained only on polished steel. Rough texture create air cushions, weakening the magnet.
- Thermal factor – high temperature reduces magnetic field. Too high temperature can permanently demagnetize the magnet.
Lifting capacity was assessed using a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, in contrast under attempts to slide the magnet the lifting capacity is smaller. In addition, even a small distance between the magnet and the plate decreases the lifting capacity.
Safety rules for work with neodymium magnets
Operating temperature
Standard neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.
Impact on smartphones
An intense magnetic field interferes with the operation of compasses in smartphones and navigation systems. Maintain magnets near a device to avoid damaging the sensors.
Electronic devices
Powerful magnetic fields can destroy records on credit cards, HDDs, and storage devices. Keep a distance of at least 10 cm.
Do not drill into magnets
Fire warning: Neodymium dust is explosive. Do not process magnets in home conditions as this risks ignition.
Caution required
Before starting, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Be predictive.
Product not for children
Strictly store magnets out of reach of children. Ingestion danger is significant, and the effects of magnets clamping inside the body are very dangerous.
Allergic reactions
Allergy Notice: The Ni-Cu-Ni coating contains nickel. If skin irritation appears, cease working with magnets and wear gloves.
Bodily injuries
Mind your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, crushing anything in their path. Be careful!
Danger to pacemakers
Medical warning: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.
Shattering risk
Despite the nickel coating, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
