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SM 25x325 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130349
GTIN/EAN: 5906301812975
Diameter Ø
25 mm [±1 mm]
Height
325 mm [±1 mm]
Weight
1260 g
Magnetic Flux
~ 6 500 Gauss [±5%]
1094.70 ZŁ with VAT / pcs + price for transport
890.00 ZŁ net + 23% VAT / pcs
740.00 ZŁ net was the lowest price in the last 30 days
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Technical data of the product - SM 25x325 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x325 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130349 |
| GTIN/EAN | 5906301812975 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 325 mm [±1 mm] |
| Weight | 1260 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| 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 25x325 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 325 | mm (L) |
| Active length | 289 | mm |
| Section count | 12 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~1212 | g |
| Active area | 227 | 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 (12 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 |
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Strengths and weaknesses of Nd2Fe14B magnets.
Pros
- They retain full power for around 10 years – the loss is just ~1% (based on simulations),
- They retain their magnetic properties even under external field action,
- In other words, due to the smooth finish of silver, the element looks attractive,
- Magnetic induction on the working layer of the magnet is maximum,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
- Possibility of precise modeling and optimizing to complex applications,
- Universal use in electronics industry – they find application in hard drives, motor assemblies, medical equipment, and complex engineering applications.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Disadvantages
- At very strong impacts they can crack, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
- Due to limitations in realizing nuts and complicated shapes in magnets, we recommend using cover - magnetic mount.
- Health risk related to microscopic parts of magnets are risky, when accidentally swallowed, which is particularly important in the context of child safety. Furthermore, tiny parts of these devices can be problematic in diagnostics medical when they are in the body.
- With budget limitations the cost of neodymium magnets can be a barrier,
Pull force analysis
Maximum lifting capacity of the magnet – what it depends on?
- with the contact of a yoke made of low-carbon steel, ensuring full magnetic saturation
- with a cross-section minimum 10 mm
- with an polished touching surface
- with direct contact (no coatings)
- under vertical force direction (90-degree angle)
- in neutral thermal conditions
What influences lifting capacity in practice
- Space between magnet and steel – every millimeter of separation (caused e.g. by veneer or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
- Angle of force application – maximum parameter is available only during pulling at a 90° angle. The force required to slide of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
- Steel thickness – too thin plate does not accept the full field, causing part of the power to be lost to the other side.
- Plate material – low-carbon steel attracts best. Alloy steels reduce magnetic properties and holding force.
- Smoothness – full contact is obtained only on smooth steel. Rough texture create air cushions, reducing force.
- Thermal factor – hot environment weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, however under parallel forces the holding force is lower. Additionally, even a minimal clearance between the magnet and the plate decreases the load capacity.
H&S for magnets
Skin irritation risks
Some people have a contact allergy to Ni, which is the standard coating for NdFeB magnets. Prolonged contact might lead to skin redness. We recommend use safety gloves.
Respect the power
Use magnets with awareness. Their powerful strength can shock even professionals. Stay alert and do not underestimate their power.
Threat to electronics
Equipment safety: Strong magnets can damage payment cards and sensitive devices (pacemakers, hearing aids, mechanical watches).
Fire warning
Dust produced during machining of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.
Serious injuries
Watch your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!
No play value
Always store magnets out of reach of children. Risk of swallowing is high, and the effects of magnets clamping inside the body are fatal.
Heat warning
Do not overheat. NdFeB magnets are susceptible to temperature. If you require resistance above 80°C, ask us about HT versions (H, SH, UH).
Risk of cracking
Neodymium magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets will cause them shattering into shards.
Magnetic interference
Navigation devices and mobile phones are extremely sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.
Health Danger
People with a heart stimulator should maintain an absolute distance from magnets. The magnetism 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
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