![Magnetic bar SM 18x275 [2xM5] / N42](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Magnetic bar SM 18x275 [2xM5] / N42")
![SM 18x275 [2xM5] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-18x275-2xm5-zep.jpg)
SM 18x275 [2xM5] / N42 - magnetic separator
magnetic separator
Catalog no 130276
GTIN/EAN: 5906301812784
Diameter Ø
18 mm [±1 mm]
Height
275 mm [±1 mm]
Weight
0.01 g
Magnetic Flux
~ 5 400 Gauss [±5%]
608.85 ZŁ with VAT / pcs + price for transport
495.00 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Contact us by phone
+48 888 99 98 98
or send us a note using
form
the contact page.
Weight as well as structure of neodymium magnets can be analyzed on our
magnetic mass calculator.
Order by 14:00 and we’ll ship today!
Product card - SM 18x275 [2xM5] / N42 - magnetic separator
Specification / characteristics - SM 18x275 [2xM5] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130276 |
| GTIN/EAN | 5906301812784 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 18 mm [±1 mm] |
| Height | 275 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 - 12 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 18x275 [2xM5] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 18 | mm |
| Total length | 275 | mm (L) |
| Active length | 239 | mm |
| Section count | 10 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~532 | g |
| Active area | 135 | 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 (10 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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other deals
![SM 32x450 [2xM8] / N52 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-32x450-2xm8-bir.jpg "SM 32x450 [2xM8] / N52 - magnetic separator")
![SM 25x400 [2xM8] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-25x400-2xm8-daj.jpg "SM 25x400 [2xM8] / N42 - magnetic separator")
![UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread](https://cdn3.dhit.pl/graphics/products/um-16x13x5-m4-gw-fig.jpg "UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread")
![UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread](https://cdn3.dhit.pl/graphics/products/um-42x20x9-m8-gw-god.jpg "UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread")
Pros as well as cons of neodymium magnets.
Strengths
- Their magnetic field is durable, and after around ten years it drops only by ~1% (theoretically),
- Neodymium magnets are distinguished by exceptionally resistant to demagnetization caused by external field sources,
- By applying a reflective coating of nickel, the element presents an elegant look,
- Neodymium magnets ensure maximum magnetic induction on a small surface, which allows for strong attraction,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
- Thanks to flexibility in forming and the capacity to customize to unusual requirements,
- Wide application in advanced technology sectors – they are utilized in magnetic memories, electric drive systems, medical devices, as well as complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which makes them useful in compact constructions
Disadvantages
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
- We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
- Limited possibility of making nuts in the magnet and complicated shapes - recommended is a housing - magnet mounting.
- Health risk related to microscopic parts of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child health protection. It is also worth noting that small components of these products can be problematic in diagnostics medical after entering the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Holding force characteristics
Highest magnetic holding force – what contributes to it?
- with the contact of a yoke made of special test steel, ensuring full magnetic saturation
- with a cross-section minimum 10 mm
- with an ideally smooth touching surface
- without the slightest insulating layer between the magnet and steel
- under vertical force vector (90-degree angle)
- in neutral thermal conditions
What influences lifting capacity in practice
- Gap between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Pull-off angle – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
- Plate material – mild steel gives the best results. Alloy steels lower magnetic permeability and lifting capacity.
- Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
- Temperature – temperature increase results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.
Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under parallel forces the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.
Safe handling of NdFeB magnets
Phone sensors
GPS units and mobile phones are highly susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can decalibrate the sensors in your phone.
Danger to the youngest
Strictly keep magnets out of reach of children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are tragic.
Machining danger
Combustion risk: Rare earth powder is explosive. Avoid machining magnets in home conditions as this risks ignition.
Power loss in heat
Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. This process is irreversible.
Nickel allergy
Allergy Notice: The nickel-copper-nickel coating consists of nickel. If an allergic reaction happens, cease handling magnets and wear gloves.
Shattering risk
NdFeB magnets are ceramic materials, which means they are prone to chipping. Clashing of two magnets will cause them shattering into shards.
Handling guide
Before starting, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.
Physical harm
Pinching hazard: The pulling power is so great that it can cause hematomas, crushing, and even bone fractures. Protective gloves are recommended.
Keep away from computers
Avoid bringing magnets near a purse, computer, or TV. The magnetism can irreversibly ruin these devices and erase data from cards.
Warning for heart patients
Patients with a ICD must maintain an absolute distance from magnets. The magnetic field can disrupt the operation of the life-saving device.
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
Rate the product
Your rating