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UMGGZ 43x6 [M6] GZ / N38 - rubber magnetic holder external thread

rubber magnetic holder external thread

Catalog no 340312

GTIN/EAN: 5906301814740

5.00

Diameter Ø

43 mm [±1 mm]

Height

6 mm [±1 mm]

Weight

36 g

Load capacity

8.70 kg / 85.32 N

10.46 with VAT / pcs + price for transport

8.50 ZŁ net + 23% VAT / pcs

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Specifications and structure of neodymium magnets can be verified using our magnetic calculator.

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Product card - UMGGZ 43x6 [M6] GZ / N38 - rubber magnetic holder external thread

Specification / characteristics - UMGGZ 43x6 [M6] GZ / N38 - rubber magnetic holder external thread

properties
properties values
Cat. no. 340312
GTIN/EAN 5906301814740
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 43 mm [±1 mm]
Height 6 mm [±1 mm]
Weight 36 g
Load capacity ~ ? 8.70 kg / 85.32 N
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMGGZ 43x6 [M6] GZ / N38 - rubber magnetic holder external thread
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
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: 340312-2026
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Pulling force

Magnetic Field

Other products

This type of holder is standard when mounting lighting (beacons), antennas, searchlights, and cameras on a car roof. Ideally suited for outdoor, off-road applications and on special vehicles.
Yes, these holders are completely resistant to weather conditions thanks to the hermetic Santoprene rubber coating. Guarantees no rusty stains on the paint, which happen with regular magnets.
Rubberized holders are the safest choice for painted surfaces. Rubber has a high coefficient of friction, ensuring stability even with vibrations and wind.
The magnet has a permanently built-in stud with a metric thread (usually M4, M6, or M8). Allows easy lamp mounting by passing the screw through the hole in the holder and tightening the nut.
Although nominal capacity (e.g., 8.70 kg) is lower than a bare magnet, real adhesion on slippery paint is much better. For secure mounting on a car roof, we recommend using several holders (e.g., 3-4 pieces per lamp).

Strengths as well as weaknesses of rare earth magnets.

Strengths

Besides their durability, neodymium magnets are valued for these benefits:
  • They virtually do not lose power, because even after ten years the performance loss is only ~1% (according to literature),
  • They have excellent resistance to magnetic field loss due to external fields,
  • The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • Magnetic induction on the top side of the magnet is impressive,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Considering the ability of precise molding and customization to custom solutions, NdFeB magnets can be created in a wide range of geometric configurations, which makes them more universal,
  • Key role in advanced technology sectors – they are commonly used in computer drives, electric motors, medical equipment, as well as modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which allows their use in small systems

Disadvantages

Disadvantages of neodymium magnets:
  • Brittleness is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a strong case, which not only secures them against impacts but also increases their durability
  • Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Limited ability of creating nuts in the magnet and complicated shapes - recommended is cover - magnet mounting.
  • Potential hazard related to microscopic parts of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child health protection. Furthermore, small elements of these devices can complicate diagnosis medical after entering 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 affects it?

The specified lifting capacity represents the peak performance, measured under ideal test conditions, namely:
  • using a plate made of mild steel, serving as a magnetic yoke
  • possessing a thickness of min. 10 mm to avoid saturation
  • characterized by lack of roughness
  • with total lack of distance (without paint)
  • during detachment in a direction perpendicular to the mounting surface
  • at conditions approx. 20°C

Lifting capacity in practice – influencing factors

Bear in mind that the application force may be lower depending on the following factors, starting with the most relevant:
  • Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Material type – the best choice is pure iron steel. Stainless steels may attract less.
  • Plate texture – ground elements guarantee perfect abutment, which improves field saturation. Uneven metal reduce efficiency.
  • Thermal environment – temperature increase results in weakening of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was performed on a smooth plate of suitable thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate decreases the load capacity.

Precautions when working with neodymium magnets
Medical interference

For implant holders: Strong magnetic fields disrupt medical devices. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Nickel coating and allergies

It is widely known that the nickel plating (standard magnet coating) is a potent allergen. If you have an allergy, refrain from direct skin contact or opt for versions in plastic housing.

Choking Hazard

Neodymium magnets are not suitable for play. Accidental ingestion of a few magnets may result in them pinching intestinal walls, which constitutes a direct threat to life and requires immediate surgery.

Do not drill into magnets

Dust created during cutting of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Keep away from electronics

GPS units and mobile phones are highly sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.

Crushing risk

Big blocks can smash fingers instantly. Under no circumstances put your hand between two attracting surfaces.

Magnetic media

Data protection: Neodymium magnets can damage data carriers and delicate electronics (pacemakers, medical aids, timepieces).

Immense force

Before use, read the rules. Sudden snapping can destroy the magnet or injure your hand. Think ahead.

Eye protection

Beware of splinters. Magnets can explode upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.

Thermal limits

Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and pulling force.

Important! Looking for details? Check our post: Why are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98