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

Product available Ships today (order by 14:00)

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

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: PLN 1-6500
Rating: 5

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

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Give us a call +48 22 499 98 98 alternatively let us know via request form our website.
Specifications along with structure of magnets can be tested with our magnetic calculator.

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Technical data - 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

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

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%

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: 310432-2026

Magnet Unit Converter

Pulling force

Force in kg

Newtons (N)

Force in lbs

Magnetic Induction

Gauss (Gs)

Input data in one of the inputs, and all other values change on the fly.

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Holders with a hook are indispensable in large-format stores and warehouses for suspending advertisements (POS systems). You can use them to organize wires, hang tools, or clothes on metal racks.

Yes, the hook is an element screwed into a bushing with a metric thread (e.g., M4, M5, M6 - check description). Check the thread size in the product specification to select matching replacements.

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.

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.

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 Nd₂Fe₁₄B magnets.

Pros

In addition to their pulling strength, neodymium magnets provide the following advantages:

They have unchanged lifting capacity, and over nearly ten years their attraction force decreases symbolically – ~1% (in testing),
They have excellent resistance to weakening of magnetic properties due to external fields,
In other words, due to the shiny layer of gold, the element is aesthetically pleasing,
The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
Thanks to modularity in forming and the ability to modify to unusual requirements,
Key role in advanced technology sectors – they serve a role in computer drives, electric drive systems, precision medical tools, and modern systems.
Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Disadvantages

Disadvantages of NdFeB magnets:

At strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. 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 rust. Therefore during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
Limited possibility of creating threads in the magnet and complicated forms - preferred is a housing - mounting mechanism.
Potential hazard to health – tiny shards of magnets are risky, in case of ingestion, which gains importance in the context of child safety. It is also worth noting that tiny parts of these products can disrupt the diagnostic process medical after entering the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Best holding force of the magnet in ideal parameters – what it depends on?

Magnet power is the result of a measurement for ideal contact conditions, assuming:

on a base made of mild steel, optimally conducting the magnetic flux
with a cross-section no less than 10 mm
with an ideally smooth touching surface
without the slightest insulating layer between the magnet and steel
under perpendicular force direction (90-degree angle)
at standard ambient temperature

Impact of factors on magnetic holding capacity in practice

In real-world applications, the actual lifting capacity depends on a number of factors, listed from most significant:

Distance (between the magnet and the plate), as even a tiny distance (e.g. 0.5 mm) results in a drastic drop in force by up to 50% (this also applies to paint, corrosion or dirt).
Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
Base massiveness – insufficiently thick sheet does not accept the full field, causing part of the power to be wasted to the other side.
Material type – ideal substrate is pure iron steel. Hardened steels may attract less.
Surface condition – ground elements ensure maximum contact, which improves force. Rough surfaces weaken the grip.
Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity was assessed with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under shearing force the load capacity is reduced by as much as 5 times. In addition, even a small distance between the magnet and the plate decreases the lifting capacity.

Safe handling of NdFeB magnets

Allergy Warning

Certain individuals suffer from a hypersensitivity to nickel, which is the common plating for NdFeB magnets. Frequent touching might lead to a rash. We recommend use safety gloves.

Keep away from children

NdFeB magnets are not suitable for play. Accidental ingestion of several magnets may result in them pinching intestinal walls, which constitutes a severe health hazard and requires urgent medical intervention.

Maximum temperature

Keep cool. NdFeB magnets are sensitive to heat. If you need operation above 80°C, inquire about HT versions (H, SH, UH).

Protect data

Intense magnetic fields can destroy records on payment cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.

Implant safety

Warning for patients: Powerful magnets affect medical devices. Maintain minimum 30 cm distance or request help to handle the magnets.

Compass and GPS

Remember: rare earth magnets generate a field that disrupts precision electronics. Keep a separation from your phone, device, and navigation systems.

Powerful field

Before use, check safety instructions. Sudden snapping can break the magnet or hurt your hand. Be predictive.

Flammability

Mechanical processing of neodymium magnets carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Eye protection

Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Hand protection

Big blocks can crush fingers instantly. Do not place your hand betwixt two strong magnets.

Warning! Learn more about hazards in the article: Safety of working with magnets.

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

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Material specification

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

Other offers

SM 25x150 [2xM8] / N52 - magnetic separator

BM 450x180x70 [4x M8] - magnetic beam

SM 32x175 [2xM8] / N42 - magnetic separator

MW 12x50 / N38 - cylindrical magnet

Strengths and weaknesses of Nd2Fe14B magnets.

Pros

Disadvantages

Holding force characteristics

Best holding force of the magnet in ideal parameters – what it depends on?

Impact of factors on magnetic holding capacity in practice

Safe handling of NdFeB magnets

Allergy Warning

Keep away from children

Maximum temperature

Protect data

Implant safety

Compass and GPS

Powerful field

Flammability

Eye protection

Hand protection

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Strengths and weaknesses of Nd₂Fe₁₄B magnets.