UMH 60x15x69 [M8] / N38 - magnetic holder with hook
magnetic holder with hook
Catalog no 310431
GTIN/EAN: 5906301814603
Diameter Ø
60 mm [±1 mm]
Height
69 mm [±1 mm]
Height
15 mm [±1 mm]
Weight
300 g
Magnetization Direction
↑ axial
Load capacity
112.00 kg / 1098.34 N
Coating
[NiCuNi] Nickel
143.91 ZŁ with VAT / pcs + price for transport
117.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical details - UMH 60x15x69 [M8] / N38 - magnetic holder with hook
Specification / characteristics - UMH 60x15x69 [M8] / N38 - magnetic holder with hook
| properties | values |
|---|---|
| Cat. no. | 310431 |
| GTIN/EAN | 5906301814603 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 60 mm [±1 mm] |
| Height | 69 mm [±1 mm] |
| Height | 15 mm [±1 mm] |
| Weight | 300 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 112.00 kg / 1098.34 N |
| Coating | [NiCuNi] Nickel |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N38
| properties | values | units |
|---|---|---|
| remenance Br [min. - max.] ? | 12.2-12.6 | kGs |
| remenance Br [min. - max.] ? | 1220-1260 | mT |
| coercivity bHc ? | 10.8-11.5 | kOe |
| coercivity bHc ? | 860-915 | kA/m |
| actual internal force iHc | ≥ 12 | kOe |
| actual internal force iHc | ≥ 955 | kA/m |
| energy density [min. - max.] ? | 36-38 | BH max MGOe |
| energy density [min. - max.] ? | 287-303 | 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 |
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Advantages as well as disadvantages of Nd2Fe14B magnets.
Benefits
- Their magnetic field is maintained, and after around 10 years it decreases only by ~1% (according to research),
- Neodymium magnets are characterized by exceptionally resistant to demagnetization caused by magnetic disturbances,
- The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to present itself better,
- They are known for high magnetic induction at the operating surface, which increases their power,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Thanks to the ability of precise molding and adaptation to specialized needs, neodymium magnets can be created in a variety of shapes and sizes, which increases their versatility,
- Fundamental importance in modern industrial fields – they are used in magnetic memories, brushless drives, precision medical tools, as well as industrial machines.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Weaknesses
- To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Due to limitations in creating threads and complex shapes in magnets, we propose using cover - magnetic mechanism.
- Health risk related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. Furthermore, small elements of these products can disrupt the diagnostic process medical in case of swallowing.
- Due to neodymium price, their price exceeds standard values,
Lifting parameters
Optimal lifting capacity of a neodymium magnet – what contributes to it?
- on a plate made of structural steel, optimally conducting the magnetic flux
- possessing a thickness of at least 10 mm to ensure full flux closure
- with an ground touching surface
- without the slightest insulating layer between the magnet and steel
- for force applied at a right angle (in the magnet axis)
- at ambient temperature room level
Magnet lifting force in use – key factors
- Distance (betwixt the magnet and the metal), as even a very small clearance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
- Base massiveness – insufficiently thick steel does not accept the full field, causing part of the power to be escaped to the other side.
- Steel type – mild steel attracts best. Alloy steels reduce magnetic permeability and lifting capacity.
- Surface structure – the more even the surface, the better the adhesion and higher the lifting capacity. Unevenness creates an air distance.
- Thermal environment – temperature increase results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under parallel forces the holding force is lower. In addition, even a slight gap between the magnet and the plate decreases the holding force.
Safety rules for work with neodymium magnets
Immense force
Handle with care. Rare earth magnets attract from a long distance and connect with huge force, often faster than you can move away.
Fire risk
Drilling and cutting of neodymium magnets poses a fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Crushing risk
Protect your hands. Two large magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Be careful!
Sensitization to coating
Medical facts indicate that the nickel plating (standard magnet coating) is a strong allergen. If you have an allergy, refrain from direct skin contact or choose coated magnets.
Maximum temperature
Standard neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.
Swallowing risk
Absolutely store magnets out of reach of children. Choking hazard is significant, and the consequences of magnets clamping inside the body are fatal.
Shattering risk
Beware of splinters. Magnets can fracture upon violent connection, launching shards into the air. Eye protection is mandatory.
Threat to navigation
Navigation devices and smartphones are extremely susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
ICD Warning
Life threat: Neodymium magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.
Magnetic media
Do not bring magnets close to a purse, computer, or screen. The magnetic field can destroy these devices and wipe information from cards.
