UMH 48x11x65 [M6] / N38 - magnetic holder with hook

Product available Ships tomorrow

UMH 48x11x65 [M6] / 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 310430

GTIN/EAN: 5906301814597

5.00

Diameter Ø

48 mm [±1 mm]

Height

65 mm [±1 mm]

Height

11 mm [±1 mm]

Weight

145 g

Magnetization Direction

↑ axial

Load capacity

88.00 kg / 862.99 N

Coating

[NiCuNi] Nickel

technical specifications »

68.88 ZŁ with VAT / pcs + price for transport

56.00 ZŁ net + 23% VAT / pcs

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Product card - UMH 48x11x65 [M6] / N38 - magnetic holder with hook

Specification / characteristics - UMH 48x11x65 [M6] / N38 - magnetic holder with hook

properties

properties	values
Cat. no.	310430
GTIN/EAN	5906301814597
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	48 mm [±1 mm]
Height	65 mm [±1 mm]
Height	11 mm [±1 mm]
Weight	145 g
Magnetization Direction	↑ axial
Load capacity ~ ?	88.00 kg / 862.99 N
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMH 48x11x65 [M6] / 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 specification and ecology

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: 310430-2026

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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.

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.

The nominal capacity (e.g., 88.00 kg) refers to perpendicular (vertical) force when mounted on the ceiling. 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.

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.

Strengths as well as weaknesses of rare earth magnets.

Advantages

Besides their immense field intensity, neodymium magnets offer the following advantages:

Their power is maintained, and after approximately ten years it drops only by ~1% (according to research),
Neodymium magnets are distinguished by exceptionally resistant to magnetic field loss caused by external magnetic fields,
The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to present itself better,
Magnetic induction on the working layer of the magnet remains extremely intense,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling operation at temperatures approaching 230°C and above...
Thanks to freedom in designing and the capacity to modify to complex applications,
Significant place in high-tech industry – they are commonly used in HDD drives, electric drive systems, medical equipment, also industrial machines.
Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Disadvantages

Disadvantages of NdFeB magnets:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
Neodymium magnets decrease 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
They oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
Due to limitations in realizing nuts and complex forms in magnets, we recommend using casing - magnetic holder.
Health risk related to microscopic parts of magnets can be dangerous, in case of ingestion, which gains importance in the context of child safety. It is also worth noting that small components of these products are able to complicate diagnosis medical in case of swallowing.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Pull force analysis

Magnetic strength at its maximum – what contributes to it?

Holding force of 88.00 kg is a result of laboratory testing conducted under specific, ideal conditions:

using a base made of high-permeability steel, serving as a circuit closing element
with a cross-section no less than 10 mm
with a surface perfectly flat
with total lack of distance (without paint)
under perpendicular application of breakaway force (90-degree angle)
in stable room temperature

Determinants of lifting force in real conditions

In practice, the actual holding force is determined by many variables, listed from crucial:

Gap (betwixt the magnet and the plate), because even a very small clearance (e.g. 0.5 mm) leads to a reduction in force by up to 50% (this also applies to paint, rust or debris).
Angle of force application – maximum parameter is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is usually many times smaller (approx. 1/5 of the lifting capacity).
Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
Material type – ideal substrate is pure iron steel. Cast iron may generate lower lifting capacity.
Smoothness – ideal contact is obtained only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
Operating temperature – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the holding force is lower. Additionally, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

Warnings

Hand protection

Big blocks can smash fingers in a fraction of a second. Never place your hand betwixt two attracting surfaces.

Combustion hazard

Combustion risk: Rare earth powder is explosive. Avoid machining magnets without safety gear as this risks ignition.

Eye protection

Protect your eyes. Magnets can explode upon violent connection, launching sharp fragments into the air. Eye protection is mandatory.

Nickel coating and allergies

Studies show that nickel (the usual finish) is a potent allergen. If you have an allergy, avoid direct skin contact and opt for coated magnets.

Choking Hazard

These products are not toys. Swallowing multiple magnets can lead to them connecting inside the digestive tract, which constitutes a severe health hazard and requires immediate surgery.

Medical implants

Health Alert: Strong magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.

Keep away from electronics

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

Data carriers

Data protection: Strong magnets can ruin payment cards and delicate electronics (heart implants, medical aids, timepieces).

Heat warning

Standard neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. This process is irreversible.

Do not underestimate power

Be careful. Rare earth magnets act from a distance and snap with huge force, often faster than you can react.

Important! Want to know more? Check our post: Why are neodymium magnets dangerous?

UMH 48x11x65 [M6] / N38 - magnetic holder with hook

Product card - UMH 48x11x65 [M6] / 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)

Force (pull)

Magnetic Field

Other offers

UMGZ 60x30x15 [M10] GZ / N38 - magnetic holder external thread

MPL 17x17x3 / N38 - lamellar magnet

SM 18x250 [2xM5] / N42 - magnetic separator

MW 20x35 / N38 - cylindrical magnet

Strengths as well as weaknesses of rare earth magnets.

Advantages

Disadvantages

Pull force analysis

Magnetic strength at its maximum – what contributes to it?

Determinants of lifting force in real conditions

Warnings

Hand protection

Combustion hazard

Eye protection

Nickel coating and allergies

Choking Hazard

Medical implants

Keep away from electronics

Data carriers

Heat warning

Do not underestimate power

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C