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SM 18x225 [2xM5] / N42 - magnetic separator
magnetic separator
Catalog no 130274
GTIN/EAN: 5906301812760
Diameter Ø
18 mm [±1 mm]
Height
225 mm [±1 mm]
Weight
0.01 g
Magnetic Flux
~ 5 400 Gauss [±5%]
498.15 ZŁ with VAT / pcs + price for transport
405.00 ZŁ net + 23% VAT / pcs
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Technical details - SM 18x225 [2xM5] / N42 - magnetic separator
Specification / characteristics - SM 18x225 [2xM5] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130274 |
| GTIN/EAN | 5906301812760 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 18 mm [±1 mm] |
| Height | 225 mm [±1 mm] |
| Weight | 0.01 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 5 400 Gauss [±5%] |
| Size/Mount Quantity | 2xM5 |
| Polarity | circumferential - 10 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 |
Table 1: Rod construction
SM 18x225 [2xM5] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 18 | mm |
| Total length | 225 | mm (L) |
| Active length | 189 | mm |
| Section count | 8 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~435 | g |
| Active area | 107 | 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) | 3.8 | kg (theor.) |
| Induction (surface) | ~5 400 | Gauss (Max) |
Chart 2: Field profile (8 sections)
Chart 3: Temperature performance
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
See also proposals
![BM 650x180x70 [4x M8] - magnetic beam](https://cdn3.dhit.pl/graphics/products/bm-650x180x70-4x-m8-laj.jpg "BM 650x180x70 [4x M8] - magnetic beam")
Advantages and disadvantages of neodymium magnets.
Pros
- They do not lose strength, even over approximately 10 years – the reduction in strength is only ~1% (theoretically),
- Magnets perfectly resist against loss of magnetization caused by external fields,
- By applying a lustrous layer of gold, the element acquires an professional look,
- Magnets are distinguished by very high magnetic induction on the surface,
- Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
- Possibility of precise machining as well as adapting to individual needs,
- Versatile presence in electronics industry – they find application in hard drives, electromotive mechanisms, advanced medical instruments, as well as multitasking production systems.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Cons
- To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
- Neodymium magnets decrease their strength 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
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
- Due to limitations in creating nuts and complex shapes in magnets, we propose using a housing - magnetic holder.
- Potential hazard related to microscopic parts of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small components of these magnets are able to disrupt the diagnostic process medical after entering the body.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Pull force analysis
Breakaway strength of the magnet in ideal conditions – what contributes to it?
- with the contact of a yoke made of low-carbon steel, ensuring full magnetic saturation
- with a cross-section no less than 10 mm
- characterized by even structure
- with direct contact (no coatings)
- during pulling in a direction vertical to the mounting surface
- at standard ambient temperature
Practical lifting capacity: influencing factors
- Gap between magnet and steel – every millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Load vector – maximum parameter is obtained only during perpendicular pulling. The force required to slide of the magnet along the surface is usually many times lower (approx. 1/5 of the lifting capacity).
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Material type – ideal substrate is pure iron steel. Hardened steels may generate lower lifting capacity.
- Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
- Thermal conditions – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).
Lifting capacity was measured by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under attempts to slide the magnet the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.
Safe handling of neodymium magnets
Nickel allergy
Certain individuals suffer from a sensitization to nickel, which is the standard coating for NdFeB magnets. Extended handling may cause dermatitis. We suggest use protective gloves.
Adults only
Strictly store magnets away from children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are fatal.
Heat sensitivity
Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will ruin its properties and pulling force.
Data carriers
Powerful magnetic fields can erase data on credit cards, HDDs, and other magnetic media. Stay away of at least 10 cm.
Risk of cracking
NdFeB magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets will cause them cracking into small pieces.
Machining danger
Machining of NdFeB material poses a fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.
Pinching danger
Mind your fingers. Two powerful magnets will snap together immediately with a force of massive weight, crushing everything in their path. Be careful!
GPS Danger
Navigation devices and smartphones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
Powerful field
Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.
Pacemakers
Life threat: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
GLS kurier
Przesyłka będzie u Ciebie za 2-3 dni
14.99 ZŁ
InPost Paczkomaty 24/7
Przesyłka będzie u Ciebie za 1-2 dni
12.30 ZŁ
Płatność przy odbiorze (pobranie):
GLS kurier
Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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