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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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Call us +48 888 99 98 98 or let us know via inquiry form the contact form page.
Force as well as form of magnets can be estimated on our magnetic mass calculator.

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Technical parameters - 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
Elemental analysis
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. It is a universal hanger that you can move to another place at any time without a trace.
Yes, the hook is an element screwed into a bushing with a metric thread (e.g., M4, M5, M6 - check description). Thanks to this, one magnet can perform many functions - sometimes be a hook, and sometimes a holder for a bolt.
You will get the greatest force by mounting the magnet on a thick, smooth steel surface vertically. When mounting on a wall (vertically), the holding force is much lower due to shear force (the magnet may slide).
Thanks to the metal cover, attraction force is concentrated, which significantly increases capacity compared to a bare magnet. Additionally, steel protects the brittle magnet from cracking upon hitting the ceiling or beam.
Standard holders are coated with a layer of nickel or zinc, which protects them from corrosion indoors. Metal elements can rust with constant contact with atmospheric moisture.

Pros and cons of neodymium magnets.

Benefits

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They have stable power, and over more than 10 years their performance decreases symbolically – ~1% (according to theory),
  • They have excellent resistance to magnetism drop as a result of external fields,
  • The use of an refined coating 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, making them more effective,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • Possibility of exact modeling and adjusting to specific needs,
  • Key role in future technologies – they serve a role in HDD drives, electric motors, diagnostic systems, also other advanced devices.
  • Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Cons

Characteristics of disadvantages of neodymium magnets and ways of using them
  • At strong impacts they can crack, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • We recommend casing - magnetic holder, due to difficulties in producing nuts inside the magnet and complex shapes.
  • Health risk related to microscopic parts of magnets are risky, in case of ingestion, which becomes key in the context of child health protection. It is also worth noting that small components of these devices can disrupt the diagnostic process medical after entering the body.
  • With large orders the cost of neodymium magnets is economically unviable,

Pull force analysis

Detachment force of the magnet in optimal conditions – what it depends on?

Information about lifting capacity was defined for optimal configuration, assuming:
  • using a plate made of high-permeability steel, functioning as a circuit closing element
  • possessing a massiveness of minimum 10 mm to avoid saturation
  • characterized by even structure
  • with total lack of distance (no impurities)
  • for force applied at a right angle (in the magnet axis)
  • at temperature approx. 20 degrees Celsius

Practical lifting capacity: influencing factors

Real force is influenced by specific conditions, such as (from priority):
  • Gap between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
  • Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
  • Material composition – different alloys attracts identically. Alloy additives weaken the attraction effect.
  • Plate texture – smooth surfaces guarantee perfect abutment, which improves field saturation. Uneven metal weaken the grip.
  • Operating temperature – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate reduces the lifting capacity.

Safe handling of neodymium magnets
Medical implants

For implant holders: Strong magnetic fields affect medical devices. Maintain minimum 30 cm distance or request help to work with the magnets.

Safe distance

Avoid bringing magnets close to a purse, laptop, or screen. The magnetic field can irreversibly ruin these devices and wipe information from cards.

Precision electronics

Remember: neodymium magnets generate a field that interferes with sensitive sensors. Maintain a safe distance from your phone, tablet, and GPS.

Permanent damage

Control the heat. Exposing the magnet to high heat will destroy its magnetic structure and pulling force.

Eye protection

NdFeB magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets leads to them cracking into shards.

Nickel coating and allergies

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction appears, cease working with magnets and use protective gear.

Bodily injuries

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

Combustion hazard

Mechanical processing of NdFeB material carries a risk of fire risk. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Swallowing risk

Absolutely keep magnets away from children. Choking hazard is significant, and the effects of magnets clamping inside the body are life-threatening.

Caution required

Handle magnets consciously. Their immense force can shock even professionals. Plan your moves and respect their power.

Danger! Want to know more? Read our article: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98