UMH 42x9x46 [M6] / N38 - magnetic holder with hook

UMH 42x9x46 [M6] / N38 - magnetic holder with hook - ujęcie 2

Product available Ships today (order by 14:00)

UMH 42x9x46 [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 310429

GTIN/EAN: 5906301814580

5.00

Diameter Ø

42 mm [±1 mm]

Height

46 mm [±1 mm]

Height

9 mm [±1 mm]

Weight

90 g

Magnetization Direction

↑ axial

Load capacity

66.00 kg / 647.24 N

Coating

[NiCuNi] Nickel

product specifications »

35.99 ZŁ with VAT / pcs + price for transport

29.26 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Want to talk magnets?

Contact us by phone +48 22 499 98 98 otherwise drop us a message using our online form the contact form page.
Weight along with appearance of magnets can be verified on our online calculation tool.

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

Technical specification - UMH 42x9x46 [M6] / N38 - magnetic holder with hook

Specification / characteristics - UMH 42x9x46 [M6] / N38 - magnetic holder with hook

properties

properties	values
Cat. no.	310429
GTIN/EAN	5906301814580
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	42 mm [±1 mm]
Height	46 mm [±1 mm]
Height	9 mm [±1 mm]
Weight	90 g
Magnetization Direction	↑ axial
Load capacity ~ ?	66.00 kg / 647.24 N
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMH 42x9x46 [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 and environmental data

Elemental analysis

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: 310429-2026

Quick Unit Converter

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They serve to create mobile suspension points without the need to drill holes in beams. 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. Thanks to this, one magnet can perform many functions - sometimes be a hook, and sometimes a holder for a bolt.

You will get the greatest force by mounting the magnet on a thick, smooth steel surface vertically. If you hang the magnet on a wall, the real capacity is approx. 20-30% of the nominal value.

The steel housing (cup) shields the magnetic field, directing all its power downwards, onto the contact surface. A bare magnet could crack upon sudden application to metal, and the holder is resistant to this.

Standard holders are coated with a layer of nickel or zinc, which protects them from corrosion indoors. In home and office conditions, they will serve for many years without signs of wear.

Strengths and weaknesses of rare earth magnets.

Benefits

Besides their tremendous strength, neodymium magnets offer the following advantages:

They do not lose strength, even after nearly ten years – the reduction in strength is only ~1% (based on measurements),
Magnets effectively resist against demagnetization caused by ambient magnetic noise,
By applying a reflective coating of nickel, the element has an nice look,
Neodymium magnets achieve maximum magnetic induction on a their surface, which ensures high operational effectiveness,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Possibility of accurate machining as well as modifying to specific needs,
Significant place in high-tech industry – they are utilized in data components, motor assemblies, medical devices, also other advanced devices.
Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Disadvantages

Disadvantages of neodymium magnets:

To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously increases its 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 stability even at temperatures up to 230°C
They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
Due to limitations in realizing threads and complicated shapes in magnets, we recommend using a housing - magnetic holder.
Health risk resulting from small fragments of magnets pose a threat, in case of ingestion, which becomes key in the context of child safety. Additionally, small components of these magnets are able to be problematic in diagnostics medical when they are in the body.
With budget limitations the cost of neodymium magnets is a challenge,

Pull force analysis

Maximum holding power of the magnet – what contributes to it?

Holding force of 66.00 kg is a result of laboratory testing performed under standard conditions:

with the contact of a sheet made of special test steel, ensuring maximum field concentration
possessing a thickness of min. 10 mm to ensure full flux closure
with an polished touching surface
with total lack of distance (no paint)
for force applied at a right angle (in the magnet axis)
in neutral thermal conditions

Lifting capacity in real conditions – factors

Real force impacted by working environment parameters, including (from most important):

Distance (between the magnet and the plate), because even a tiny distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to varnish, corrosion or dirt).
Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the maximum value.
Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
Steel grade – ideal substrate is high-permeability steel. Cast iron may attract less.
Surface quality – the more even the surface, the larger the contact zone and stronger the hold. Roughness creates an air distance.
Thermal factor – high temperature reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity was determined by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under shearing force the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate decreases the load capacity.

Safety rules for work with NdFeB magnets

Magnetic media

Do not bring magnets near a purse, computer, or screen. The magnetism can permanently damage these devices and wipe information from cards.

Medical implants

Life threat: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Caution required

Use magnets consciously. Their immense force can surprise even experienced users. Stay alert and respect their power.

Nickel coating and allergies

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If skin irritation appears, immediately stop handling magnets and wear gloves.

Keep away from children

Neodymium magnets are not toys. Swallowing several magnets can lead to them pinching intestinal walls, which poses a critical condition and requires immediate surgery.

Dust explosion hazard

Dust generated during cutting of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Material brittleness

Watch out for shards. Magnets can fracture upon uncontrolled impact, launching shards into the air. We recommend safety glasses.

Do not overheat magnets

Standard neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. This process is irreversible.

GPS and phone interference

An intense magnetic field disrupts the functioning of magnetometers in phones and navigation systems. Maintain magnets close to a smartphone to avoid breaking the sensors.

Bodily injuries

Risk of injury: The attraction force is so great that it can result in hematomas, pinching, and broken bones. Use thick gloves.

Caution! Learn more about risks in the article: Magnet Safety Guide.

UMH 42x9x46 [M6] / N38 - magnetic holder with hook

Technical specification - UMH 42x9x46 [M6] / N38 - magnetic holder with hook

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Environmental data

Pulling force

Magnetic Induction

Check out also offers

SM 18x100 [2xM5] / N42 - magnetic separator

UMT 12x20 orange / N38 - board holder

BM 510x180x70 [4x M8] - magnetic beam

UMC 60x9/5x15 / N38 - cylindrical magnetic holder

Strengths and weaknesses of rare earth magnets.

Benefits

Disadvantages

Pull force analysis

Maximum holding power of the magnet – what contributes to it?

Lifting capacity in real conditions – factors

Safety rules for work with NdFeB magnets

Magnetic media

Medical implants

Caution required

Nickel coating and allergies

Keep away from children

Dust explosion hazard

Material brittleness

Do not overheat magnets

GPS and phone interference

Bodily injuries

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C