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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

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

product parameters »

189.42 ZŁ with VAT / pcs + price for transport

154.00 ZŁ net + 23% VAT / pcs

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Parameters as well as shape of a neodymium magnet can be calculated on our our magnetic calculator.

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Technical data of the product - 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 specification and ecology
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: 190417-2026
Magnet Unit Converter
Force (pull)
Field Strength
Just complete a single box, to let the converter fill in the rest automatically.

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This type of holder has a protruding 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. Used for mounting sensors, panels, plates, and exhibition elements.
The threaded stud is an integral part of the steel housing, but avoid overtightening the thread. Do not use the magnet as a structural bolt transferring huge mechanical loads in shear. The magnet itself is protected by a steel cup and is very resistant to impact.
Standard neodymium holders are adapted to work in temperatures up to 80°C. If you need resistance to higher temperatures, ask about special versions (H, SH). Avoid mounting directly on hot engine or machine components.
Holders are equipped with standard metric threads (e.g., M4, M6, M8, M10). Exact screw dimensions can be found in the product technical table. It is a solid threaded connection, ready for use.
Yes, the steel housing (cup) focuses the magnetic field, significantly increasing attraction force on the active side. This force drops very quickly with increasing distance (air gap).

Strengths and weaknesses of rare earth magnets.

Pros

Besides their durability, neodymium magnets are valued for these benefits:
  • Their magnetic field remains stable, and after around 10 years it decreases only by ~1% (theoretically),
  • They retain their magnetic properties even under strong external field,
  • By covering with a smooth layer of silver, the element gains an proper look,
  • Neodymium magnets generate maximum magnetic induction on a their surface, which ensures high operational effectiveness,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to the possibility of free shaping and adaptation to unique projects, NdFeB magnets can be produced in a wide range of forms and dimensions, which amplifies use scope,
  • Wide application in high-tech industry – they find application in hard drives, drive modules, medical devices, also other advanced devices.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Cons

Cons of neodymium magnets and ways of using them
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 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 as well as corrosion.
  • We recommend cover - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complex forms.
  • Potential hazard resulting from small fragments of magnets are risky, when accidentally swallowed, which is particularly important in the context of child safety. Additionally, small components of these magnets can complicate diagnosis medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what it depends on?

The lifting capacity listed is a theoretical maximum value conducted under specific, ideal conditions:
  • with the contact of a yoke made of low-carbon steel, ensuring full magnetic saturation
  • whose thickness equals approx. 10 mm
  • with a plane free of scratches
  • with direct contact (without impurities)
  • under axial force direction (90-degree angle)
  • at standard ambient temperature

What influences lifting capacity in practice

In real-world applications, the real power is determined by many variables, presented from most significant:
  • Clearance – existence of any layer (rust, tape, air) acts as an insulator, which lowers capacity rapidly (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds much less (often approx. 20-30% of nominal force).
  • Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Plate material – low-carbon steel attracts best. Alloy steels lower magnetic permeability and holding force.
  • Plate texture – smooth surfaces guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
  • Temperature – heating the magnet causes a temporary drop of induction. Check the thermal limit for a given model.

Lifting capacity was measured using a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, however under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Moreover, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.

Warnings
Data carriers

Very strong magnetic fields can erase data on credit cards, HDDs, and other magnetic media. Keep a distance of at least 10 cm.

Crushing risk

Mind your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, destroying anything in their path. Be careful!

Caution required

Handle magnets consciously. Their huge power can surprise even experienced users. Be vigilant and do not underestimate their power.

Flammability

Drilling and cutting of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Keep away from children

Only for adults. Tiny parts pose a choking risk, leading to serious injuries. Keep out of reach of kids and pets.

Thermal limits

Watch the temperature. Heating the magnet to high heat will destroy its properties and pulling force.

Medical interference

Warning for patients: Powerful magnets affect electronics. Keep at least 30 cm distance or request help to work with the magnets.

Impact on smartphones

GPS units and mobile phones are extremely susceptible to magnetism. Close proximity with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Nickel allergy

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If an allergic reaction appears, cease working with magnets and use protective gear.

Magnets are brittle

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Warning! Details about risks in the article: Safety of working with magnets.