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UMGGZ 22x6 [M4] GZ / N38 - rubber magnetic holder external thread

rubber magnetic holder external thread

Catalog no 340310

GTIN/EAN: 5906301814726

5.00

Diameter Ø

22 mm [±1 mm]

Height

6 mm [±1 mm]

Weight

15 g

Load capacity

5.10 kg / 50.01 N

7.38 with VAT / pcs + price for transport

6.00 ZŁ net + 23% VAT / pcs

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Technical of the product - UMGGZ 22x6 [M4] GZ / N38 - rubber magnetic holder external thread

Specification / characteristics - UMGGZ 22x6 [M4] GZ / N38 - rubber magnetic holder external thread

properties
properties values
Cat. no. 340310
GTIN/EAN 5906301814726
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 22 mm [±1 mm]
Height 6 mm [±1 mm]
Weight 15 g
Load capacity ~ ? 5.10 kg / 50.01 N
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMGGZ 22x6 [M4] 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 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: 340310-2026
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Magnet pull force

Magnetic Field

Other deals

This type of holder is standard when mounting lighting (beacons), antennas, searchlights, and cameras on a car roof. It is a safe and durable mounting without drilling holes in the bodywork.
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.
Soft rubber provides a barrier between the hard magnet and the paint, eliminating the risk of scratches. Rubber has a high coefficient of friction, ensuring stability even with vibrations and wind.
The thread size is standard and fits typical nuts available in hardware stores. The stud is an integral part of the steel base and cannot be unscrewed.
Rubber creates a distance between the magnet and metal, which slightly reduces perpendicular attraction force but drastically increases friction force. Holding force depends on the roof sheet thickness.

Strengths as well as weaknesses of rare earth magnets.

Benefits

Besides their durability, neodymium magnets are valued for these benefits:
  • They do not lose power, even over around ten years – the drop in power is only ~1% (based on measurements),
  • They show high resistance to demagnetization induced by external magnetic fields,
  • A magnet with a shiny nickel surface has better aesthetics,
  • Neodymium magnets create maximum magnetic induction on a small area, which ensures high operational effectiveness,
  • Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for functioning at temperatures reaching 230°C and above...
  • Possibility of accurate creating and adapting to specific needs,
  • Wide application in electronics industry – they find application in data components, brushless drives, medical devices, also complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which enables their usage in compact constructions

Limitations

Disadvantages of neodymium magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding 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 creating threads and complicated shapes in magnets, we recommend using casing - magnetic holder.
  • Possible danger resulting from small fragments of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child safety. Furthermore, small components of these magnets can disrupt the diagnostic process medical when they are in the body.
  • Due to complex production process, their price exceeds standard values,

Lifting parameters

Maximum magnetic pulling forcewhat contributes to it?

Magnet power is the result of a measurement for optimal configuration, taking into account:
  • on a plate made of structural steel, perfectly concentrating the magnetic field
  • with a thickness no less than 10 mm
  • characterized by smoothness
  • with direct contact (no impurities)
  • during pulling in a direction vertical to the plane
  • in neutral thermal conditions

Lifting capacity in real conditions – factors

Real force is affected by specific conditions, including (from priority):
  • Gap (betwixt the magnet and the plate), because even a very small clearance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
  • Base massiveness – insufficiently thick steel does not accept the full field, causing part of the flux to be escaped to the other side.
  • Material composition – not every steel attracts identically. High carbon content weaken the attraction effect.
  • Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
  • Temperature influence – hot environment weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces the holding force is lower. In addition, even a slight gap between the magnet and the plate decreases the holding force.

H&S for magnets
Permanent damage

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

Metal Allergy

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction occurs, cease working with magnets and wear gloves.

Dust is flammable

Powder produced during grinding of magnets is self-igniting. Do not drill into magnets unless you are an expert.

GPS Danger

GPS units and smartphones are highly sensitive to magnetism. Direct contact with a strong magnet can decalibrate the sensors in your phone.

Danger to pacemakers

Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.

Fragile material

Neodymium magnets are sintered ceramics, which means they are very brittle. Impact of two magnets will cause them cracking into small pieces.

Do not give to children

Only for adults. Small elements pose a choking risk, leading to severe trauma. Keep out of reach of children and animals.

Hand protection

Big blocks can smash fingers instantly. Never put your hand betwixt two attracting surfaces.

Magnetic media

Do not bring magnets close to a wallet, computer, or screen. The magnetism can destroy these devices and erase data from cards.

Handling guide

Handle magnets with awareness. Their immense force can surprise even professionals. Plan your moves and do not underestimate their power.

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