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UMH 32x8x46 [M6] / N38 - magnetic holder with hook

magnetic holder with hook

Catalog no 310427

GTIN/EAN: 5906301814566

Diameter Ø

32 mm [±1 mm]

Height

46 mm [±1 mm]

Height

8 mm [±1 mm]

Weight

53 g

Magnetization Direction

↑ axial

Load capacity

38.00 kg / 372.65 N

Coating

[NiCuNi] Nickel

see technical data »

22.14 ZŁ with VAT / pcs + price for transport

18.00 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety
Do you have doubts?

Pick up the phone and ask +48 22 499 98 98 or get in touch via our online form through our site.
Strength and structure of a neodymium magnet can be verified with our force calculator.

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Technical specification - UMH 32x8x46 [M6] / N38 - magnetic holder with hook

Specification / characteristics - UMH 32x8x46 [M6] / N38 - magnetic holder with hook

properties
properties values
Cat. no. 310427
GTIN/EAN 5906301814566
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 32 mm [±1 mm]
Height 46 mm [±1 mm]
Height 8 mm [±1 mm]
Weight 53 g
Magnetization Direction ↑ axial
Load capacity ~ ? 38.00 kg / 372.65 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMH 32x8x46 [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

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: 310427-2026
Measurement Calculator
Magnet pull force
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They serve to create mobile suspension points without the need to drill holes in beams. 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. 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 cup acts as a magnetic armature, intensifying the neodymium action and increasing efficiency. 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.

Pros and cons of rare earth magnets.

Advantages

Besides their remarkable field intensity, neodymium magnets offer the following advantages:
  • They have stable power, and over nearly ten years their attraction force decreases symbolically – ~1% (in testing),
  • Neodymium magnets are distinguished by remarkably resistant to magnetic field loss caused by external magnetic fields,
  • A magnet with a metallic gold surface has an effective appearance,
  • Neodymium magnets create maximum magnetic induction on a small area, which ensures high operational effectiveness,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the form) even at a temperature of 230°C or more...
  • Possibility of individual forming and modifying to individual requirements,
  • Versatile presence in electronics industry – they find application in hard drives, electric motors, diagnostic systems, and modern systems.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Disadvantages of NdFeB magnets:
  • At very strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
  • Neodymium magnets decrease their strength 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
  • When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
  • Limited possibility of making threads in the magnet and complicated shapes - preferred is cover - magnetic holder.
  • Health risk related to microscopic parts of magnets can be dangerous, if swallowed, which becomes key in the context of child health protection. Additionally, small elements of these magnets are able to complicate diagnosis medical in case of swallowing.
  • With budget limitations the cost of neodymium magnets can be a barrier,

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what affects it?

Information about lifting capacity was defined for optimal configuration, including:
  • using a sheet made of low-carbon steel, functioning as a circuit closing element
  • possessing a thickness of at least 10 mm to avoid saturation
  • characterized by lack of roughness
  • with zero gap (no impurities)
  • for force applied at a right angle (in the magnet axis)
  • at conditions approx. 20°C

Key elements affecting lifting force

Effective lifting capacity impacted by working environment parameters, such as (from most important):
  • Gap between magnet and steel – every millimeter of distance (caused e.g. by veneer or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
  • Plate thickness – too thin sheet does not close the flux, causing part of the power to be escaped into the air.
  • Material composition – not every steel attracts identically. Alloy additives weaken the attraction effect.
  • Smoothness – full contact is possible only on polished steel. Rough texture create air cushions, weakening the magnet.
  • Thermal conditions – NdFeB sinters have a negative temperature coefficient. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under perpendicular forces, whereas under shearing force the load capacity is reduced by as much as 75%. Additionally, even a small distance between the magnet’s surface and the plate lowers the load capacity.

H&S for magnets
Hand protection

Danger of trauma: The pulling power is so immense that it can cause blood blisters, crushing, and broken bones. Protective gloves are recommended.

Flammability

Fire hazard: Neodymium dust is explosive. Avoid machining magnets in home conditions as this risks ignition.

Phone sensors

A strong magnetic field disrupts the operation of compasses in phones and GPS navigation. Keep magnets close to a device to prevent breaking the sensors.

Handling guide

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

Allergy Warning

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If an allergic reaction happens, cease working with magnets and wear gloves.

Medical interference

People with a heart stimulator have to maintain an safe separation from magnets. The magnetism can interfere with the functioning of the implant.

Protective goggles

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.

This is not a toy

Always keep magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are life-threatening.

Heat sensitivity

Do not overheat. Neodymium magnets are susceptible to temperature. If you need resistance above 80°C, inquire about HT versions (H, SH, UH).

Data carriers

Intense magnetic fields can corrupt files on credit cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.

Warning! Details about hazards in the article: Magnet Safety Guide.