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UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external thread

magnetic holder external thread

Catalog no 190415

GTIN/EAN: 5906301813866

5.00

Diameter Ø

48 mm [±1 mm]

Height

24 mm [±1 mm]

Height

11.5 mm [±1 mm]

Weight

140 g

Load capacity

80.00 kg / 784.53 N

Coating

[NiCuNi] Nickel

technical details »

59.90 ZŁ with VAT / pcs + price for transport

48.70 ZŁ net + 23% VAT / pcs

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Technical of the product - UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external thread

Specification / characteristics - UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external thread

properties
properties values
Cat. no. 190415
GTIN/EAN 5906301813866
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 48 mm [±1 mm]
Height 24 mm [±1 mm]
Height 11.5 mm [±1 mm]
Weight 140 g
Load capacity ~ ? 80.00 kg / 784.53 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMGZ 48x24x11.5 [M8] 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
Elemental analysis
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: 190415-2026
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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.
The screw is solidly seated in the cup, however, moderation must be maintained when tightening the nut. 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.
We use standardized threads that fit typical nuts available in every store. 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. It is a solution optimized for strong holding with direct contact, not attracting from afar.

Strengths and weaknesses of Nd2Fe14B magnets.

Benefits

Besides their remarkable field intensity, neodymium magnets offer the following advantages:
  • They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
  • Magnets perfectly resist against demagnetization caused by foreign field sources,
  • Thanks to the reflective finish, the layer of nickel, gold-plated, or silver gives an aesthetic appearance,
  • Magnetic induction on the top side of the magnet is very high,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Due to the potential of accurate molding and adaptation to individualized requirements, neodymium magnets can be manufactured in a wide range of geometric configurations, which expands the range of possible applications,
  • Wide application in advanced technology sectors – they are used in magnetic memories, motor assemblies, medical devices, also modern systems.
  • Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Cons

What to avoid - cons of neodymium magnets: tips and applications.
  • 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 experience a drop in strength. 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 oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • We recommend casing - magnetic mount, due to difficulties in creating nuts inside the magnet and complex forms.
  • Possible danger to health – tiny shards of magnets are risky, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, tiny parts of these devices can complicate diagnosis medical in case of swallowing.
  • Due to expensive raw materials, their price exceeds standard values,

Holding force characteristics

Detachment force of the magnet in optimal conditions – what contributes to it?

Breakaway force was determined for optimal configuration, assuming:
  • using a sheet made of low-carbon steel, serving as a ideal flux conductor
  • possessing a massiveness of at least 10 mm to avoid saturation
  • characterized by even structure
  • without any air gap between the magnet and steel
  • under vertical force vector (90-degree angle)
  • in stable room temperature

Practical lifting capacity: influencing factors

Holding efficiency is affected by working environment parameters, such as (from priority):
  • Gap (betwixt the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to varnish, corrosion or dirt).
  • Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of nominal force).
  • Steel thickness – too thin plate does not close the flux, causing part of the flux to be wasted into the air.
  • Steel type – low-carbon steel attracts best. Alloy steels lower magnetic permeability and lifting capacity.
  • Smoothness – full contact is possible only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
  • Thermal conditions – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was assessed using a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under attempts to slide the magnet the holding force is lower. Additionally, even a minimal clearance between the magnet’s surface and the plate lowers the lifting capacity.

Safety rules for work with NdFeB magnets
Warning for heart patients

Individuals with a pacemaker should maintain an safe separation from magnets. The magnetic field can interfere with the operation of the life-saving device.

Avoid contact if allergic

Certain individuals experience a hypersensitivity to Ni, which is the common plating for NdFeB magnets. Extended handling might lead to dermatitis. It is best to use protective gloves.

Heat warning

Control the heat. Exposing the magnet to high heat will destroy its properties and pulling force.

Magnetic media

Intense magnetic fields can destroy records on payment cards, HDDs, and storage devices. Stay away of at least 10 cm.

No play value

Strictly keep magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are tragic.

Fire warning

Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this risks ignition.

Serious injuries

Pinching hazard: The attraction force is so great that it can cause blood blisters, crushing, and even bone fractures. Protective gloves are recommended.

Fragile material

Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Eye protection is mandatory.

Respect the power

Exercise caution. Neodymium magnets attract from a long distance and connect with massive power, often faster than you can react.

Threat to navigation

Be aware: rare earth magnets produce a field that disrupts sensitive sensors. Maintain a separation from your phone, tablet, and GPS.

Important! Learn more about hazards in the article: Safety of working with magnets.