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UMGZ 32x18x8 [M6] GZ / N38 - magnetic holder external thread

magnetic holder external thread

Catalog no 190324

GTIN/EAN: 5906301813835

5.00
Load capacity 34.00 kg / 333.43 N
Diameter Ø
32 mm [±1 mm]
Height
18 mm [±1 mm]
Height
8 mm [±1 mm]
Weight
40 g
Coating
[NiCuNi] Nickel
view technical specifications »

17.98 zł with VAT / pcs + price for transport

14.62 zł net + 23% VAT / pcs

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Technical details - UMGZ 32x18x8 [M6] GZ / N38 - magnetic holder external thread

Specification / characteristics - UMGZ 32x18x8 [M6] GZ / N38 - magnetic holder external thread

properties
properties values
Cat. no. 190324
GTIN/EAN 5906301813835
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 18 mm [±1 mm]
Height 8 mm [±1 mm]
Weight 40 g
Load capacity ~ ? 34.00 kg / 333.43 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMGZ 32x18x8 [M6] GZ / N38 - 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

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%

Sustainability

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: 190324-2026
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This type of holder has a integrated threaded stud (screw), making it perfect for mounting in through holes. Just pass the thread through the hole in the element and tighten the nut on the other side. They are commonly used in machine building, exhibition stands, lighting, and advertising.
The screw is solidly seated in the cup, however, moderation must be maintained when tightening the nut. We recommend using spring washers to avoid the need for forceful tightening. The construction is durable and adapted to industrial conditions.
Maximum operating temperature is 80 degrees Celsius for the standard version. If you need resistance to higher temperatures, ask about special versions (H, SH). Remember that even momentary overheating can weaken the holder.
We use standardized threads that fit typical nuts available in every store. Exact screw dimensions can be found in the product technical table. The thread is made of galvanized steel, ensuring corrosion resistance.
Thanks to shielding the sides and top, all magnet power is directed downwards, giving higher capacity than a bare magnet. This force drops very quickly with increasing distance (air gap).

Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

Besides their tremendous magnetic power, neodymium magnets offer the following advantages:
  • They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (according to literature),
  • They maintain their magnetic properties even under external field action,
  • By covering with a smooth layer of nickel, the element has an elegant look,
  • Magnets possess excellent magnetic induction on the outer layer,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
  • Possibility of custom forming and modifying to precise requirements,
  • Versatile presence in future technologies – they are used in mass storage devices, electric motors, medical devices, as well as other advanced devices.
  • Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Limitations

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • They oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • We recommend a housing - magnetic mount, due to difficulties in creating threads inside the magnet and complicated forms.
  • Possible danger resulting from small fragments of magnets can be dangerous, in case of ingestion, which gains importance in the context of child health protection. Additionally, tiny parts of these magnets can be problematic in diagnostics medical in case of swallowing.
  • With large orders the cost of neodymium magnets is a challenge,

Lifting parameters

Magnetic strength at its maximum – what it depends on?

The declared magnet strength concerns the peak performance, measured under optimal environment, meaning:
  • with the use of a yoke made of low-carbon steel, guaranteeing maximum field concentration
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • characterized by even structure
  • without the slightest insulating layer between the magnet and steel
  • under vertical application of breakaway force (90-degree angle)
  • in stable room temperature

Impact of factors on magnetic holding capacity in practice

In practice, the actual holding force is determined by many variables, ranked from the most important:
  • Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Direction of force – maximum parameter is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the surface is standardly several times smaller (approx. 1/5 of the lifting capacity).
  • Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
  • Material composition – not every steel reacts the same. High carbon content worsen the attraction effect.
  • Surface finish – ideal contact is possible only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
  • Heat – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, whereas under parallel forces the load capacity is reduced by as much as 5 times. In addition, even a small distance between the magnet and the plate lowers the holding force.

Precautions when working with NdFeB magnets
Nickel coating and allergies

Allergy Notice: The nickel-copper-nickel coating contains nickel. If redness happens, cease handling magnets and wear gloves.

Combustion hazard

Machining of neodymium magnets poses a fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Demagnetization risk

Avoid heat. Neodymium magnets are susceptible to temperature. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Danger to pacemakers

People with a ICD should maintain an absolute distance from magnets. The magnetic field can stop the operation of the implant.

Caution required

Handle magnets with awareness. Their immense force can surprise even professionals. Stay alert and do not underestimate their force.

No play value

Only for adults. Small elements can be swallowed, leading to serious injuries. Store away from children and animals.

Magnet fragility

Beware of splinters. Magnets can fracture upon violent connection, ejecting shards into the air. Wear goggles.

Phone sensors

Remember: rare earth magnets produce a field that interferes with precision electronics. Keep a safe distance from your mobile, tablet, and GPS.

Magnetic media

Equipment safety: Neodymium magnets can damage data carriers and delicate electronics (heart implants, hearing aids, timepieces).

Pinching danger

Mind your fingers. Two large magnets will join instantly with a force of massive weight, destroying anything in their path. Be careful!

Danger! Looking for details? Read our article: Are neodymium magnets dangerous?