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SM 25x350 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130350
GTIN/EAN: 5906301812982
Diameter Ø
25 mm [±1 mm]
Height
350 mm [±1 mm]
Weight
1360 g
Magnetic Flux
~ 6 500 Gauss [±5%]
984.00 ZŁ with VAT / pcs + price for transport
800.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Detailed specification - SM 25x350 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x350 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130350 |
| GTIN/EAN | 5906301812982 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 350 mm [±1 mm] |
| Weight | 1360 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 13 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 25x350 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 350 | mm (L) |
| Active length | 314 | mm |
| Section count | 13 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~1306 | g |
| Active area | 247 | 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) | 10.6 | kg (theor.) |
| Induction (surface) | ~6 500 | Gauss (Max) |
Chart 2: Field profile (13 sections)
Chart 3: Temperature performance
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 |
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Strengths and weaknesses of neodymium magnets.
Advantages
- They retain full power for around ten years – the drop is just ~1% (in theory),
- Neodymium magnets prove to be extremely resistant to magnetic field loss caused by external interference,
- By covering with a decorative layer of silver, the element gains an professional look,
- Neodymium magnets generate maximum magnetic induction on a their surface, which increases force concentration,
- Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures approaching 230°C and above...
- Thanks to versatility in constructing and the capacity to customize to client solutions,
- Huge importance in modern technologies – they are utilized in hard drives, electric motors, medical equipment, as well as multitasking production systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Weaknesses
- 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
- When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- We recommend casing - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complex forms.
- Possible danger resulting from small fragments of magnets pose a threat, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, tiny parts of these products are able to disrupt the diagnostic process medical when they are in the body.
- With large orders the cost of neodymium magnets is economically unviable,
Lifting parameters
Breakaway strength of the magnet in ideal conditions – what it depends on?
- with the application of a sheet made of special test steel, guaranteeing maximum field concentration
- whose thickness is min. 10 mm
- with an polished contact surface
- with direct contact (no paint)
- during pulling in a direction vertical to the mounting surface
- in stable room temperature
What influences lifting capacity in practice
- Clearance – the presence of foreign body (paint, tape, air) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
- Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
- Steel thickness – insufficiently thick sheet does not close the flux, causing part of the power to be lost to the other side.
- Plate material – low-carbon steel attracts best. Alloy steels decrease magnetic permeability and holding force.
- Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
- Temperature influence – high temperature reduces pulling force. Too high temperature can permanently demagnetize the magnet.
Lifting capacity was measured by applying a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, in contrast under parallel forces the holding force is lower. Additionally, even a slight gap between the magnet and the plate decreases the lifting capacity.
Precautions when working with neodymium magnets
Threat to navigation
GPS units and mobile phones are highly susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.
Do not underestimate power
Before starting, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.
Protective goggles
NdFeB magnets are sintered ceramics, meaning they are prone to chipping. Impact of two magnets will cause them cracking into shards.
Magnetic media
Device Safety: Strong magnets can ruin data carriers and delicate electronics (pacemakers, medical aids, timepieces).
Metal Allergy
Certain individuals experience a hypersensitivity to Ni, which is the standard coating for NdFeB magnets. Frequent touching may cause a rash. We suggest use protective gloves.
Danger to pacemakers
Patients with a heart stimulator should maintain an absolute distance from magnets. The magnetic field can interfere with the functioning of the life-saving device.
Maximum temperature
Keep cool. NdFeB magnets are susceptible to temperature. If you require operation above 80°C, look for HT versions (H, SH, UH).
Bodily injuries
Big blocks can break fingers instantly. Never place your hand between two strong magnets.
Dust is flammable
Machining of neodymium magnets carries a risk of fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
Choking Hazard
These products are not toys. Swallowing multiple magnets can lead to them connecting inside the digestive tract, which poses a severe health hazard and necessitates immediate surgery.
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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