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

Product available Ships tomorrow

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

technical details »

202.95 ZŁ with VAT / pcs + price for transport

165.00 ZŁ net + 23% VAT / pcs

bulk discounts:

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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

Want to talk magnets?

Give us a call +48 22 499 98 98 or contact us using form our website.
Strength as well as shape of neodymium magnets can be checked on our power calculator.

Orders placed before 14:00 will be shipped the same business day.

Detailed specification - 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

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: 310432-2026

Quick Unit Converter

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Holders with a hook are indispensable in large-format stores and warehouses for suspending advertisements (POS systems). In workshops and garages, they work perfectly for guiding cables or hanging work lighting.

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.

The given value defines the maximum load when suspended under a thick, horizontal ceiling beam. 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. 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. Metal elements can rust with constant contact with atmospheric moisture.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Benefits

Besides their durability, neodymium magnets are valued for these benefits:

They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (based on calculations),
They are extremely resistant to demagnetization induced by presence of other magnetic fields,
Thanks to the shimmering finish, the coating of Ni-Cu-Ni, gold, or silver-plated gives an aesthetic appearance,
They are known for high magnetic induction at the operating surface, which affects their effectiveness,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
Possibility of exact forming and adapting to individual conditions,
Key role in innovative solutions – they are commonly used in computer drives, drive modules, precision medical tools, also industrial machines.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Disadvantages of NdFeB magnets:

To avoid cracks under impact, we recommend using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
Neodymium magnets lose their power 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 stability even at temperatures up to 230°C
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
Due to limitations in producing nuts and complicated shapes in magnets, we recommend using a housing - magnetic mechanism.
Health risk resulting from small fragments of magnets can be dangerous, if swallowed, which is particularly important in the context of child health protection. Furthermore, small elements of these devices are able to complicate diagnosis 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

Maximum lifting capacity of the magnet – what affects it?

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

on a plate made of structural steel, effectively closing the magnetic flux
whose transverse dimension reaches at least 10 mm
characterized by smoothness
with zero gap (no paint)
for force applied at a right angle (in the magnet axis)
at room temperature

Practical lifting capacity: influencing factors

Bear in mind that the magnet holding will differ depending on the following factors, starting with the most relevant:

Gap (between the magnet and the plate), since even a very small distance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, corrosion or debris).
Force direction – catalog parameter refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (often approx. 20-30% of maximum force).
Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
Material composition – different alloys reacts the same. High carbon content weaken the attraction effect.
Surface condition – smooth surfaces guarantee perfect abutment, which improves field saturation. Uneven metal reduce efficiency.
Thermal environment – temperature increase results in weakening of force. It is worth remembering the maximum operating temperature for a given model.

Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.

Safe handling of neodymium magnets

Implant safety

Patients with a pacemaker have to maintain an absolute distance from magnets. The magnetic field can stop the operation of the implant.

Safe distance

Do not bring magnets near a wallet, laptop, or screen. The magnetic field can destroy these devices and wipe information from cards.

Warning for allergy sufferers

Nickel alert: The nickel-copper-nickel coating consists of nickel. If skin irritation occurs, immediately stop working with magnets and wear gloves.

Heat warning

Do not overheat. NdFeB magnets are sensitive to temperature. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).

No play value

Neodymium magnets are not suitable for play. Accidental ingestion of multiple magnets can lead to them pinching intestinal walls, which poses a critical condition and requires immediate surgery.

Magnets are brittle

Protect your eyes. Magnets can fracture upon uncontrolled impact, ejecting sharp fragments into the air. Eye protection is mandatory.

Phone sensors

Remember: rare earth magnets generate a field that interferes with precision electronics. Maintain a safe distance from your phone, tablet, and navigation systems.

Combustion hazard

Powder created during cutting of magnets is flammable. Do not drill into magnets unless you are an expert.

Crushing risk

Watch your fingers. Two powerful magnets will snap together immediately with a force of massive weight, crushing everything in their path. Exercise extreme caution!

Caution required

Handle magnets consciously. Their powerful strength can shock even professionals. Be vigilant and do not underestimate their power.

Danger! Need more info? Check our post: Why are neodymium magnets dangerous?

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

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Chemical composition

Environmental data

Force (pull)

Field Strength

Other offers

MW 6x2 / N38 - cylindrical magnet

UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal thread

SM 32x375 [2xM8] / N52 - magnetic separator

MW 70x50 / N38 - cylindrical magnet

Advantages as well as disadvantages of Nd2Fe14B magnets.

Benefits

Cons

Holding force characteristics

Maximum lifting capacity of the magnet – what affects it?

Practical lifting capacity: influencing factors

Safe handling of neodymium magnets

Implant safety

Safe distance

Warning for allergy sufferers

Heat warning

No play value

Magnets are brittle

Phone sensors

Combustion hazard

Crushing risk

Caution required

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.