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UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread

magnetic holder external thread

Catalog no 190417

GTIN/EAN: 5906301813880

5.00
Load capacity 162.00 kg / 1588.68 N
Diameter Ø
75 mm [±1 mm]
Height
34 mm [±1 mm]
Height
18 mm [±1 mm]
Weight
475 g
Coating
[NiCuNi] Nickel
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189.42 zł with VAT / pcs + price for transport

154.00 zł net + 23% VAT / pcs

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Technical parameters - UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread

Specification / characteristics - UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread

properties
properties values
Cat. no. 190417
GTIN/EAN 5906301813880
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 75 mm [±1 mm]
Height 34 mm [±1 mm]
Height 18 mm [±1 mm]
Weight 475 g
Load capacity ~ ? 162.00 kg / 1588.68 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMGZ 75x34x18 [M10] 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%

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: 190417-2026
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This type of holder has a integrated threaded stud (screw), making it ideal for mounting in through holes. Thanks to this, you get a solid, magnetized mounting point without welding or gluing. They are commonly used in machine building, exhibition stands, lighting, and advertising.
Too strong tightening with a wrench can cause the stud to rotate in the cup or strip the thread. When assembling, use a torque wrench or tighten with feeling. The construction is durable and adapted to industrial conditions.
Standard neodymium holders are adapted to work in temperatures up to 80°C. We also offer holders made of ferrite magnets (resistant up to 200°C) or special high-temperature versions. Remember that even momentary overheating can weaken the holder.
Holders are equipped with standard metric threads (e.g., M4, M6, M8, M10). Ensure thread length is sufficient to pass through the hole in your material and tighten the nut. It is a solid threaded connection, ready for use.
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).

Pros as well as cons of Nd2Fe14B magnets.

Pros

Besides their exceptional magnetic power, neodymium magnets offer the following advantages:
  • They have unchanged lifting capacity, and over around ten years their performance decreases symbolically – ~1% (in testing),
  • They possess excellent resistance to weakening of magnetic properties as a result of external magnetic sources,
  • The use of an metallic coating of noble metals (nickel, gold, silver) causes the element to look better,
  • The surface of neodymium magnets generates a powerful magnetic field – this is a distinguishing feature,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • Possibility of custom modeling as well as optimizing to individual requirements,
  • Versatile presence in innovative solutions – they are commonly used in mass storage devices, electromotive mechanisms, precision medical tools, as well as industrial machines.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

Cons of neodymium magnets: application proposals
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
  • When exposed to high temperature, neodymium magnets experience a drop in force. 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
  • Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • We suggest cover - magnetic holder, due to difficulties in producing threads inside the magnet and complicated shapes.
  • Health risk to health – tiny shards of magnets are risky, if swallowed, which is particularly important in the context of child health protection. Additionally, small components of these devices are able to complicate diagnosis medical after entering the body.
  • With mass production the cost of neodymium magnets is economically unviable,

Holding force characteristics

Highest magnetic holding force – what it depends on?

Magnet power was defined for optimal configuration, assuming:
  • with the contact of a sheet made of low-carbon steel, ensuring maximum field concentration
  • whose thickness reaches at least 10 mm
  • with a surface perfectly flat
  • without any insulating layer between the magnet and steel
  • during detachment in a direction vertical to the plane
  • at ambient temperature approx. 20 degrees Celsius

What influences lifting capacity in practice

Please note that the magnet holding may be lower depending on elements below, in order of importance:
  • Gap between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Direction of force – maximum parameter is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
  • Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
  • Steel type – mild steel attracts best. Alloy admixtures decrease magnetic permeability and lifting capacity.
  • Surface finish – full contact is obtained only on smooth steel. Any scratches and bumps create air cushions, reducing force.
  • Temperature influence – hot environment reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was measured using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under shearing force the lifting capacity is smaller. Additionally, even a small distance between the magnet and the plate decreases the holding force.

Precautions when working with neodymium magnets
Do not give to children

These products are not toys. Eating multiple magnets can lead to them attracting across intestines, which poses a severe health hazard and necessitates urgent medical intervention.

Respect the power

Be careful. Neodymium magnets attract from a distance and snap with huge force, often quicker than you can move away.

Do not drill into magnets

Combustion risk: Neodymium dust is highly flammable. Avoid machining magnets without safety gear as this may cause fire.

Heat warning

Do not overheat. NdFeB magnets are sensitive to heat. If you require operation above 80°C, ask us about HT versions (H, SH, UH).

Medical implants

Individuals with a ICD must keep an safe separation from magnets. The magnetic field can stop the operation of the life-saving device.

Magnet fragility

Protect your eyes. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.

Phone sensors

A strong magnetic field negatively affects the functioning of magnetometers in smartphones and GPS navigation. Do not bring magnets close to a smartphone to prevent damaging the sensors.

Bodily injuries

Large magnets can break fingers instantly. Never put your hand between two strong magnets.

Keep away from computers

Do not bring magnets near a purse, laptop, or TV. The magnetic field can permanently damage these devices and erase data from cards.

Nickel allergy

Certain individuals suffer from a contact allergy to Ni, which is the standard coating for NdFeB magnets. Frequent touching may cause a rash. We recommend wear protective gloves.

Danger! Learn more about hazards in the article: Magnet Safety Guide.