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UMGZ 16x13x5 [M4] GZ / N38 - magnetic holder external thread

magnetic holder external thread

Catalog no 190321

GTIN/EAN: 5906301813804

5.00
Load capacity 5.00 kg / 49.03 N
Diameter Ø
16 mm [±1 mm]
Height
13 mm [±1 mm]
Height
5 mm [±1 mm]
Weight
7 g
Coating
[NiCuNi] Nickel
technical parameters »

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Technical details - UMGZ 16x13x5 [M4] GZ / N38 - magnetic holder external thread

Specification / characteristics - UMGZ 16x13x5 [M4] GZ / N38 - magnetic holder external thread

properties
properties values
Cat. no. 190321
GTIN/EAN 5906301813804
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 16 mm [±1 mm]
Height 13 mm [±1 mm]
Height 5 mm [±1 mm]
Weight 7 g
Load capacity ~ ? 5.00 kg / 49.03 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMGZ 16x13x5 [M4] 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
Engineering data and GPSR

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: 190321-2026
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Pulling force

Field Strength

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It is a ready-made mounting element that allows quick creation of a magnetic point. Thanks to this, you get a solid, magnetized mounting point without welding or gluing. Used for mounting sensors, panels, plates, and exhibition elements.
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 magnet itself is protected by a steel cup and is very resistant to impact.
Maximum operating temperature is 80 degrees Celsius for the standard version. We also offer holders made of ferrite magnets (resistant up to 200°C) or special high-temperature versions. Avoid mounting directly on hot engine or machine components.
Holders are equipped with standard metric threads (e.g., M4, M6, M8, M10). Stud length varies depending on the model (usually from 8 to 15 mm). 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. However, such a system works point-wise and requires direct contact with metal.

Strengths and weaknesses of Nd2Fe14B magnets.

Pros

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • Their strength remains stable, and after around 10 years it drops only by ~1% (according to research),
  • They feature excellent resistance to weakening of magnetic properties due to external fields,
  • A magnet with a shiny nickel surface is more attractive,
  • Neodymium magnets ensure maximum magnetic induction on a their surface, which ensures high operational effectiveness,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • In view of the potential of accurate forming and adaptation to custom needs, magnetic components can be modeled in a variety of geometric configurations, which expands the range of possible applications,
  • Versatile presence in high-tech industry – they serve a role in mass storage devices, brushless drives, precision medical tools, also complex engineering applications.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Cons

Disadvantages of NdFeB magnets:
  • Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a special holder, which not only secures them against impacts but also increases their durability
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • We recommend a housing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complicated forms.
  • Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. Additionally, small components of these devices are able to be problematic in diagnostics medical when they are in the body.
  • Due to expensive raw materials, their price exceeds standard values,

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what contributes to it?

The specified lifting capacity represents the peak performance, measured under ideal test conditions, specifically:
  • with the contact of a sheet made of special test steel, guaranteeing full magnetic saturation
  • whose thickness equals approx. 10 mm
  • with an ground touching surface
  • under conditions of ideal adhesion (metal-to-metal)
  • under vertical force vector (90-degree angle)
  • at temperature room level

What influences lifting capacity in practice

Effective lifting capacity impacted by working environment parameters, including (from priority):
  • Distance (betwixt the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Angle of force application – highest force is reached only during perpendicular pulling. The shear force of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
  • Base massiveness – insufficiently thick steel does not close the flux, causing part of the power to be escaped into the air.
  • Metal type – not every steel attracts identically. High carbon content weaken the interaction with the magnet.
  • Base smoothness – the more even the plate, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
  • Temperature influence – hot environment weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.

Warnings
Finger safety

Risk of injury: The attraction force is so great that it can result in hematomas, pinching, and broken bones. Use thick gloves.

Nickel coating and allergies

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If redness occurs, cease working with magnets and wear gloves.

Danger to the youngest

Neodymium magnets are not intended for children. Accidental ingestion of multiple magnets may result in them pinching intestinal walls, which poses a severe health hazard and requires immediate surgery.

Shattering risk

Neodymium magnets are ceramic materials, meaning they are prone to chipping. Clashing of two magnets will cause them cracking into small pieces.

Compass and GPS

A powerful magnetic field disrupts the functioning of magnetometers in smartphones and navigation systems. Keep magnets near a smartphone to avoid breaking the sensors.

Power loss in heat

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

Threat to electronics

Intense magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Stay away of at least 10 cm.

Mechanical processing

Dust produced during machining of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Conscious usage

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

Danger to pacemakers

For implant holders: Powerful magnets disrupt medical devices. Keep minimum 30 cm distance or request help to handle the magnets.

Danger! Looking for details? Check our post: Are neodymium magnets dangerous?