FAQ
Order Status

tel: +48 22 499 98 98

Neodymiums – complete shape selection

Want to buy really powerful magnets? We offer complete range of various shapes and sizes. They are ideal for home use, garage and model making. Check our offer available immediately.

discover magnet catalog

Magnet fishing sets (searchers)

Start your adventure with treasure salvaging! Our specialized grips (F200, F400) provide grip certainty and immense power. Solid, corrosion-resistant housing and reinforced ropes are reliable in any water.

find searching equipment

Industrial magnetic grips industrial

Professional solutions for mounting without drilling. Threaded grips (external or internal) guarantee instant organization of work on production halls. They are indispensable installing lamps, detectors and ads.

see available threads

🚚 Order by 14:00 – we'll ship same day!

Dhit sp. z o.o.
0
0.00 ZŁ
  1. home
  2. handles magnets internal hook and hook type-e
  3. magnet with hook umh 75x18x68 [m8] / n38
← previous
Product available Ships today (order by 14:00)

UMH 75x18x68 [M8] / N38 - magnetic holder with hook

magnetic holder with hook

Catalog no 310432

GTIN/EAN: 5906301814610

5.00

Diameter Ø

75 mm [±1 mm]

Height

68 mm [±1 mm]

Height

18 mm [±1 mm]

Weight

625 g

Magnetization Direction

↑ axial

Load capacity

162.00 kg / 1588.68 N

Coating

[NiCuNi] Nickel

product parameters »

202.95 ZŁ with VAT / pcs + price for transport

165.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?
price from 1 pcs
165.00 ZŁ
202.95 ZŁ
price from 5 pcs
145.20 ZŁ
178.60 ZŁ
Carbon Footprint – environmental impact GPSR Regulation – product safety
Do you have problems deciding?

Call us now +48 888 99 98 98 or drop us a message via request form the contact section.
Weight and shape of magnetic components can be reviewed using our force calculator.

Same-day processing for orders placed before 14:00.

Physical properties - UMH 75x18x68 [M8] / N38 - magnetic holder with hook

Specification / characteristics - UMH 75x18x68 [M8] / N38 - magnetic holder with hook

properties
properties values
Cat. no. 310432
GTIN/EAN 5906301814610
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 75 mm [±1 mm]
Height 68 mm [±1 mm]
Height 18 mm [±1 mm]
Weight 625 g
Magnetization Direction ↑ axial
Load capacity ~ ? 162.00 kg / 1588.68 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMH 75x18x68 [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
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
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: 310432-2026
Magnet Unit Converter
Pulling force
Field Strength
Input your figure in one of the inputs, and the remaining fields convert instantly.

Other products

UMC 42x7/4x9 / N38 - cylindrical magnetic holder
Product available Ships today (order by 14:00)

UMC 42x7/4x9 / N38 - cylindrical magnetic holder

29.99 ZŁ brutto / pcs
UMGGZ 66x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
Product available Ships today (order by 14:00)

UMGGZ 66x8.5 [M8] GZ / N38 - rubber magnetic holder external thread

23.37 ZŁ brutto / pcs
MW 2x4 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 2x4 / N38 - cylindrical magnet

0.209 ZŁ brutto / pcs
MW 100x30 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 100x30 / N38 - cylindrical magnet

650.01 ZŁ brutto / pcs
They serve to create mobile suspension points without the need to drill holes in beams. You can use them to organize wires, hang tools, or clothes on metal racks.
The magnet has a standard threaded socket, which allows replacing the hook with any other accessory with a thread. 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. 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. A bare magnet could crack upon sudden application to metal, and the holder is resistant to this.
For outdoor use (in rain), metal hangers may eventually develop a rusty coating over time. In home and office conditions, they will serve for many years without signs of wear.

Strengths and weaknesses of rare earth magnets.

Advantages

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They have stable power, and over nearly ten years their performance decreases symbolically – ~1% (according to theory),
  • They possess excellent resistance to magnetic field loss as a result of external fields,
  • By covering with a shiny coating of silver, the element acquires an modern look,
  • The surface of neodymium magnets generates a maximum magnetic field – this is one of their assets,
  • 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 accurate creating and adjusting to complex needs,
  • Huge importance in future technologies – they serve a role in computer drives, brushless drives, medical equipment, also technologically advanced constructions.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Disadvantages of NdFeB magnets:
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only shields the magnet but also improves its resistance to damage
  • Neodymium magnets lose 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 durability even at temperatures up to 230°C
  • Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Limited possibility of making threads in the magnet and complicated shapes - recommended is a housing - mounting mechanism.
  • Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Additionally, small components of these products are able to disrupt the diagnostic process medical after entering the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what contributes to it?

The declared magnet strength refers to the maximum value, measured under optimal environment, meaning:
  • with the application of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
  • whose thickness reaches at least 10 mm
  • with an ideally smooth contact surface
  • under conditions of ideal adhesion (surface-to-surface)
  • during pulling in a direction perpendicular to the mounting surface
  • at temperature room level

Practical aspects of lifting capacity – factors

Bear in mind that the application force will differ depending on elements below, starting with the most relevant:
  • Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
  • Loading method – catalog parameter refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
  • Steel thickness – insufficiently thick steel causes magnetic saturation, causing part of the power to be escaped into the air.
  • Steel grade – the best choice is high-permeability steel. Cast iron may generate lower lifting capacity.
  • Surface structure – the more even the surface, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
  • Operating temperature – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was measured with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate decreases the holding force.

Safe handling of neodymium magnets
Do not overheat magnets

Watch the temperature. Heating the magnet to high heat will ruin its properties and pulling force.

Safe distance

Do not bring magnets close to a wallet, laptop, or TV. The magnetism can permanently damage these devices and wipe information from cards.

Product not for children

Adult use only. Tiny parts can be swallowed, causing severe trauma. Store out of reach of kids and pets.

Allergic reactions

Medical facts indicate that nickel (the usual finish) is a strong allergen. For allergy sufferers, refrain from direct skin contact or opt for encased magnets.

GPS Danger

An intense magnetic field disrupts the functioning of magnetometers in smartphones and GPS navigation. Maintain magnets near a smartphone to prevent breaking the sensors.

Flammability

Machining of NdFeB material carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Beware of splinters

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

Serious injuries

Protect your hands. Two large magnets will join immediately with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!

Immense force

Use magnets with awareness. Their powerful strength can surprise even experienced users. Be vigilant and respect their power.

Warning for heart patients

Individuals with a heart stimulator should keep an large gap from magnets. The magnetism can interfere with the functioning of the implant.

Important! Details about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98