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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

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143.91 ZŁ with VAT / pcs + price for transport

117.00 ZŁ net + 23% VAT / pcs

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Parameters as well as appearance of a neodymium magnet can be tested with our modular calculator.

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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
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
Technical and environmental data
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%
Environmental data
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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A hook magnet is an ideal solution for quick mounting of banners, signs, and markings on steel ceiling structures. In workshops and garages, they work perfectly for guiding cables or hanging work lighting.
The magnet has a standard threaded socket, which allows replacing the hook with any other accessory with a thread. Thanks to this, one magnet can perform many functions - sometimes be a hook, and sometimes a holder for a bolt.
The nominal capacity (e.g., 112.00 kg) refers to perpendicular (vertical) force when mounted on the ceiling. For heavy ceiling ads or tools, we recommend choosing a magnet with a considerable power reserve.
The cup acts as a magnetic armature, intensifying the neodymium action and increasing efficiency. The housing ensures mechanical durability, which is important in industrial and assembly conditions.
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.

Pros as well as cons of rare earth magnets.

Benefits

Besides their remarkable strength, neodymium magnets offer the following advantages:
  • They retain magnetic properties for around 10 years – the loss is just ~1% (in theory),
  • They have excellent resistance to weakening of magnetic properties when exposed to external fields,
  • The use of an metallic finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • They are known for high magnetic induction at the operating surface, which improves attraction properties,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Due to the option of accurate forming and adaptation to unique solutions, neodymium magnets can be created in a broad palette of geometric configurations, which makes them more universal,
  • Huge importance in high-tech industry – they serve a role in mass storage devices, brushless drives, diagnostic systems, and modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which makes them useful in miniature devices

Limitations

Characteristics of disadvantages of neodymium magnets: weaknesses and usage proposals
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (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
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
  • We suggest casing - magnetic mechanism, due to difficulties in creating threads inside the magnet and complicated forms.
  • Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. Additionally, tiny parts of these products can be problematic in diagnostics medical after entering the body.
  • Due to expensive raw materials, their price is relatively high,

Lifting parameters

Highest magnetic holding force – what affects it?

The lifting capacity listed is a result of laboratory testing executed under the following configuration:
  • on a block made of mild steel, perfectly concentrating the magnetic field
  • with a thickness minimum 10 mm
  • with a surface free of scratches
  • without any clearance between the magnet and steel
  • under perpendicular force direction (90-degree angle)
  • in temp. approx. 20°C

Determinants of practical lifting force of a magnet

Effective lifting capacity is affected by working environment parameters, mainly (from most important):
  • Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
  • Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Steel grade – the best choice is pure iron steel. Cast iron may generate lower lifting capacity.
  • Surface finish – ideal contact is obtained only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
  • Thermal conditions – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, whereas under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a small distance between the magnet’s surface and the plate lowers the load capacity.

Warnings
Adults only

Adult use only. Small elements pose a choking risk, leading to intestinal necrosis. Keep away from kids and pets.

Crushing risk

Big blocks can crush fingers in a fraction of a second. Do not place your hand between two attracting surfaces.

Nickel coating and allergies

Certain individuals experience a contact allergy to Ni, which is the standard coating for NdFeB magnets. Frequent touching might lead to dermatitis. We suggest wear protective gloves.

Magnet fragility

Despite metallic appearance, the material is brittle and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.

Handling guide

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

Protect data

Device Safety: Neodymium magnets can ruin payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).

Health Danger

Life threat: Neodymium magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Dust is flammable

Dust created during cutting of magnets is combustible. Avoid drilling into magnets unless you are an expert.

GPS and phone interference

Be aware: rare earth magnets generate a field that disrupts sensitive sensors. Keep a separation from your phone, tablet, and GPS.

Thermal limits

Do not overheat. NdFeB magnets are sensitive to temperature. If you need resistance above 80°C, inquire about HT versions (H, SH, UH).

Warning! Learn more about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98