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UMH 48x11x65 [M6] / N38 - magnetic holder with hook

magnetic holder with hook

Catalog no 310430

GTIN/EAN: 5906301814597

5.00

Diameter Ø

48 mm [±1 mm]

Height

65 mm [±1 mm]

Height

11 mm [±1 mm]

Weight

145 g

Magnetization Direction

↑ axial

Load capacity

88.00 kg / 862.99 N

Coating

[NiCuNi] Nickel

technical parameters »

68.88 ZŁ with VAT / pcs + price for transport

56.00 ZŁ net + 23% VAT / pcs

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Call us now +48 888 99 98 98 or let us know through inquiry form through our site.
Lifting power and shape of neodymium magnets can be checked on our online calculation tool.

Orders placed before 14:00 will be shipped the same business day.

Technical data of the product - UMH 48x11x65 [M6] / N38 - magnetic holder with hook

Specification / characteristics - UMH 48x11x65 [M6] / N38 - magnetic holder with hook

properties
properties values
Cat. no. 310430
GTIN/EAN 5906301814597
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 48 mm [±1 mm]
Height 65 mm [±1 mm]
Height 11 mm [±1 mm]
Weight 145 g
Magnetization Direction ↑ axial
Load capacity ~ ? 88.00 kg / 862.99 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMH 48x11x65 [M6] / 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%
Ecology and recycling (GPSR)
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: 310430-2025
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Force (pull)
Magnetic Field
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Holders with a hook are indispensable in large-format stores and warehouses for suspending advertisements (POS systems). It is a universal hanger that you can move to another place at any time without a trace.
The magnet has a standard threaded socket, which allows replacing the hook with any other accessory with a thread. Check the thread size in the product specification to select matching replacements.
You will get the greatest force by mounting the magnet on a thick, smooth steel surface vertically. 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. In home and office conditions, they will serve for many years without signs of wear.

Strengths and weaknesses of rare earth magnets.

Benefits

Apart from their strong power, neodymium magnets have these key benefits:
  • They retain attractive force for around ten years – the loss is just ~1% (based on simulations),
  • Neodymium magnets are highly resistant to demagnetization caused by magnetic disturbances,
  • A magnet with a metallic nickel surface has better aesthetics,
  • The surface of neodymium magnets generates a unique magnetic field – this is a distinguishing feature,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of exact modeling and optimizing to atypical needs,
  • Significant place in modern industrial fields – they are utilized in HDD drives, electric motors, medical devices, and multitasking production systems.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of NdFeB magnets:
  • To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening 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
  • 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 creating nuts and complex forms in magnets, we recommend using cover - magnetic mechanism.
  • Health risk related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child safety. Additionally, tiny parts of these devices are able to complicate diagnosis medical when they are in the body.
  • With large orders the cost of neodymium magnets is a challenge,

Holding force characteristics

Maximum lifting capacity of the magnet – what it depends on?

Information about lifting capacity is the result of a measurement for ideal contact conditions, including:
  • with the application of a yoke made of special test steel, ensuring full magnetic saturation
  • whose thickness reaches at least 10 mm
  • with a surface free of scratches
  • under conditions of no distance (metal-to-metal)
  • under axial application of breakaway force (90-degree angle)
  • at ambient temperature room level

Practical lifting capacity: influencing factors

Bear in mind that the magnet holding may be lower influenced by the following factors, in order of importance:
  • Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Direction of force – highest force is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the plate is standardly several times smaller (approx. 1/5 of the lifting capacity).
  • Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
  • Material type – ideal substrate is pure iron steel. Stainless steels may generate lower lifting capacity.
  • Surface quality – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the holding force is lower. In addition, even a slight gap between the magnet and the plate decreases the lifting capacity.

Safety rules for work with neodymium magnets
Cards and drives

Avoid bringing magnets close to a wallet, laptop, or screen. The magnetic field can permanently damage these devices and wipe information from cards.

Warning for heart patients

Warning for patients: Strong magnetic fields disrupt electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Do not give to children

These products are not suitable for play. Accidental ingestion of a few magnets may result in them connecting inside the digestive tract, which constitutes a critical condition and necessitates urgent medical intervention.

Power loss in heat

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

GPS and phone interference

Navigation devices and smartphones are extremely sensitive to magnetism. Direct contact with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Powerful field

Handle with care. Neodymium magnets act from a long distance and connect with massive power, often faster than you can react.

Skin irritation risks

Some people experience a sensitization to Ni, which is the standard coating for NdFeB magnets. Extended handling can result in a rash. We suggest wear safety gloves.

Fragile material

Beware of splinters. Magnets can explode upon violent connection, launching sharp fragments into the air. We recommend safety glasses.

Bodily injuries

Large magnets can crush fingers in a fraction of a second. Under no circumstances put your hand betwixt two strong magnets.

Combustion hazard

Machining of neodymium magnets carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Security! Want to know more? Check our post: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98