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UMH 60x15x69 [M8] / N38 - magnetic holder with hook

magnetic holder with hook

Catalog no 310431

GTIN/EAN: 5906301814603

5.00

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

see specifications »

143.91 ZŁ with VAT / pcs + price for transport

117.00 ZŁ net + 23% VAT / pcs

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Force as well as structure of a neodymium magnet can be reviewed with our magnetic mass calculator.

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Product card - UMH 60x15x69 [M8] / N38 - magnetic holder with hook

Specification / characteristics - UMH 60x15x69 [M8] / N38 - magnetic holder with hook

properties
properties values
Cat. no. 310431
GTIN/EAN 5906301814603
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
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

Specification / characteristics UMH 60x15x69 [M8] / N38 - magnetic holder with hook
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

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
Engineering data and GPSR
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
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 310431-2026
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They serve to create mobile suspension points without the need to drill holes in beams. In workshops and garages, they work perfectly for guiding cables or hanging work lighting.
The tip is fully demountable - you can unscrew the hook and screw in a bolt, eyelet, or other element in its place. This gives huge application flexibility and allows adapting the holder to current needs.
The given value defines the maximum load when suspended under a thick, horizontal ceiling beam. If you hang the magnet on a wall, the real capacity is approx. 20-30% of the nominal value.
The cup acts as a magnetic armature, intensifying the neodymium action and increasing efficiency. Additionally, steel protects the brittle magnet from cracking upon hitting the ceiling or beam.
In the bathroom or kitchen, they will work perfectly, provided they are not directly splashed with water. Metal elements can rust with constant contact with atmospheric moisture.

Advantages and disadvantages of neodymium magnets.

Strengths

Apart from their strong magnetic energy, neodymium magnets have these key benefits:
  • They retain attractive force for nearly 10 years – the loss is just ~1% (according to analyses),
  • Neodymium magnets remain remarkably resistant to demagnetization caused by external interference,
  • A magnet with a smooth silver surface has better aesthetics,
  • Magnetic induction on the working part of the magnet turns out to be extremely intense,
  • 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 detailed machining as well as optimizing to specific requirements,
  • Wide application in high-tech industry – they are commonly used in hard drives, electric motors, diagnostic systems, as well as other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in small systems

Weaknesses

Disadvantages of NdFeB magnets:
  • Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a steel housing, which not only secures them against impacts but also raises their 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 and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • We suggest a housing - magnetic holder, due to difficulties in realizing nuts inside the magnet and complicated forms.
  • Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. It is also worth noting that small elements of these devices are able to be problematic in diagnostics medical when they are in 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

Maximum holding power of the magnet – what it depends on?

Information about lifting capacity was defined for optimal configuration, assuming:
  • on a plate made of mild steel, optimally conducting the magnetic flux
  • with a cross-section minimum 10 mm
  • characterized by smoothness
  • with total lack of distance (no impurities)
  • during detachment in a direction perpendicular to the plane
  • in neutral thermal conditions

Key elements affecting lifting force

It is worth knowing that the application force will differ influenced by elements below, starting with the most relevant:
  • Distance – existence of any layer (rust, tape, gap) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Load vector – highest force is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the surface is standardly several times smaller (approx. 1/5 of the lifting capacity).
  • Plate thickness – too thin 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 admixtures decrease magnetic permeability and lifting capacity.
  • Surface structure – the more even the surface, the better the adhesion and stronger the hold. Unevenness creates an air distance.
  • Temperature – heating the magnet results in weakening of force. Check the thermal limit for a given model.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Additionally, even a minimal clearance between the magnet and the plate reduces the load capacity.

Warnings
Do not give to children

Only for adults. Small elements can be swallowed, leading to serious injuries. Keep out of reach of children and animals.

Beware of splinters

Neodymium magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets leads to them breaking into shards.

GPS and phone interference

Remember: neodymium magnets generate a field that confuses sensitive sensors. Maintain a separation from your mobile, device, and navigation systems.

Operating temperature

Regular neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. The loss of strength is permanent.

Immense force

Exercise caution. Neodymium magnets attract from a distance and snap with massive power, often quicker than you can move away.

Physical harm

Risk of injury: The attraction force is so immense that it can result in blood blisters, crushing, and even bone fractures. Protective gloves are recommended.

Threat to electronics

Avoid bringing magnets close to a purse, computer, or TV. The magnetic field can destroy these devices and wipe information from cards.

Dust is flammable

Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this may cause fire.

Sensitization to coating

Some people suffer from a hypersensitivity to Ni, which is the common plating for neodymium magnets. Prolonged contact can result in an allergic reaction. It is best to wear safety gloves.

Health Danger

Health Alert: Strong magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.

Caution! Want to know more? Check our post: Why are neodymium magnets dangerous?