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

Product available Ships in 3 days

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

see technical data »

202.95 ZŁ with VAT / pcs + price for transport

165.00 ZŁ net + 23% VAT / pcs

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Technical parameters - 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%

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

Measurement Calculator

Pulling force

Force in kg

Newtons (N)

Force in lbs

Magnetic Field

Gauss (Gs)

Induction (T)

Simply populate a single box, to let the tool fill in everything else automatically.

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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 tip is fully demountable - you can unscrew the hook and screw in a bolt, eyelet, or other element in its place. 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. When mounting on a wall (vertically), the holding force is much lower due to shear force (the magnet may slide).

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. If you are looking for an outdoor hanger, choose a model in rubberized or plastic housing, which is tight.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Strengths

Apart from their notable magnetism, neodymium magnets have these key benefits:

They do not lose magnetism, even after nearly 10 years – the drop in lifting capacity is only ~1% (theoretically),
They maintain their magnetic properties even under external field action,
The use of an metallic layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
Magnetic induction on the surface of the magnet is exceptional,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
Possibility of precise modeling and adjusting to complex needs,
Wide application in modern technologies – they are commonly used in magnetic memories, drive modules, medical equipment, as well as complex engineering applications.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:

They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
Limited ability of producing threads in the magnet and complex shapes - preferred is cover - mounting 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. Furthermore, small components of these magnets can disrupt the diagnostic process medical when they are in the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Magnetic strength at its maximum – what it depends on?

Breakaway force was determined for ideal contact conditions, taking into account:

using a plate made of high-permeability steel, serving as a circuit closing element
whose thickness is min. 10 mm
with an ideally smooth touching surface
with direct contact (no paint)
for force acting at a right angle (pull-off, not shear)
at conditions approx. 20°C

What influences lifting capacity in practice

Holding efficiency impacted by working environment parameters, such as (from most important):

Clearance – the presence of foreign body (paint, tape, air) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
Angle of force application – maximum parameter is obtained only during perpendicular pulling. The shear force of the magnet along the surface is usually many times lower (approx. 1/5 of the lifting capacity).
Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
Chemical composition of the base – low-carbon steel gives the best results. Alloy admixtures reduce magnetic permeability and holding force.
Plate texture – ground elements guarantee perfect abutment, which increases force. Uneven metal weaken the grip.
Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and in frost 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, however under shearing force the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.

Precautions when working with neodymium magnets

Magnet fragility

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

Medical interference

For implant holders: Powerful magnets disrupt electronics. Maintain at least 30 cm distance or ask another person to handle the magnets.

Allergy Warning

Medical facts indicate that nickel (standard magnet coating) is a potent allergen. If you have an allergy, prevent direct skin contact and opt for encased magnets.

Crushing force

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

Threat to navigation

Remember: neodymium magnets generate a field that confuses sensitive sensors. Keep a separation from your mobile, tablet, and navigation systems.

Do not drill into magnets

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

Choking Hazard

Product intended for adults. Tiny parts can be swallowed, causing serious injuries. Store out of reach of kids and pets.

Handling rules

Before use, check safety instructions. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.

Demagnetization risk

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will destroy its magnetic structure and pulling force.

Magnetic media

Very strong magnetic fields can destroy records on payment cards, HDDs, and storage devices. Stay away of at least 10 cm.

Attention! Details about risks in the article: Magnet Safety Guide.

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

Technical parameters - 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

Sustainability

Pulling force

Magnetic Field

Check out more deals

MPL 10x10x3 / N38 - lamellar magnet

MW 5x25 / N38 - cylindrical magnet

MW 9x3 / N38 - cylindrical magnet

MW 12x8 / N38 - cylindrical magnet

Advantages as well as disadvantages of Nd2Fe14B magnets.

Strengths

Cons

Pull force analysis

Magnetic strength at its maximum – what it depends on?

What influences lifting capacity in practice

Precautions when working with neodymium magnets

Magnet fragility

Medical interference

Allergy Warning

Crushing force

Threat to navigation

Do not drill into magnets

Choking Hazard

Handling rules

Demagnetization risk

Magnetic media

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.