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neodymium magnets

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UMGZ 60x30x15 [M10] GZ / N38 - magnetic holder external thread

magnetic holder external thread

Catalog no 190416

GTIN: 5906301813873

5

Diameter Ø [±0,1 mm]

60 mm

Height [±0,1 mm]

30 mm

Height [±0,1 mm]

15 mm

Weight

260 g

Load capacity

140 kg / 1372.93 N

102.95 with VAT / pcs + price for transport

83.70 ZŁ net + 23% VAT / pcs

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UMGZ 60x30x15 [M10] GZ / N38 - magnetic holder external thread

Specification/characteristics UMGZ 60x30x15 [M10] GZ / N38 - magnetic holder external thread
properties
values
Cat. no.
190416
GTIN
5906301813873
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
60 mm [±0,1 mm]
Height
30 mm [±0,1 mm]
Height
15 mm [±0,1 mm]
Weight
260 g [±0,1 mm]
Load capacity ~ ?
140 kg / 1372.93 N
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material N38

properties
values
units
remenance Br [Min. - Max.] ?
12.2-12.6
kGs
remenance Br [Min. - Max.] ?
1220-1260
T
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 NdFeB

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 106
°C-1
Thermal expansion perpendicular (⊥) to orientation (M)
-(1-3) x 10-6
°C-1
Young's modulus
1.7 x 104
kg/mm²

Shopping tips

Magnetic holders with neodymium magnets with external thread are modern accessories, applied across various industries, including automotive, agriculture, or advertising. Their design relies on a high-performance NdFeB magnet, installed in steel housing protected by an anti-corrosion layer. The external thread ranging from M3–M10 enables mounting onto compatible surfaces, which makes it possible to screw in nameplates, lighting, tools. Thanks to a strong magnetic field, these holders provide a holding force of up to 68 kg, depending on the model and size. Applications of the holders include both industrial operations and DIY projects. Certain models feature a rubber coating, which safeguards mounted elements from damage and increases grip. Note, however, that neodymium magnets are brittle and may break under excessive tightening. Caution during installation is recommended, and they should be stored away from magnetic cards and electronic devices. For best quality, one should opt for models from trusted manufacturers.

Advantages and disadvantages of neodymium magnets NdFeB.

Apart from their notable holding force, neodymium magnets have these key benefits:

  • They virtually do not lose strength, because even after ten years, the performance loss is only ~1% (in laboratory conditions),
  • They show exceptional resistance to demagnetization from external field exposure,
  • In other words, due to the metallic nickel coating, the magnet obtains an aesthetic appearance,
  • They have extremely strong magnetic induction on the surface of the magnet,
  • Neodymium magnets are known for very high magnetic induction and the ability to work at temperatures up to 230°C or higher (depending on the geometry),
  • The ability for precise shaping or adaptation to specific needs – neodymium magnets can be manufactured in a wide range of shapes and sizes, which amplifies their functionality across industries,
  • Important function in advanced technical fields – they are used in computer drives, electric motors, healthcare devices or even technologically developed systems,
  • Relatively small size with high magnetic force – neodymium magnets offer impressive pulling strength in compact dimensions, which makes them useful in miniature devices

Disadvantages of neodymium magnets:

  • They can break when subjected to a strong impact. If the magnets are exposed to physical collisions, they should be placed in a metal holder. The steel housing, in the form of a holder, protects the magnet from fracture and increases its overall strength,
  • They lose power at extreme temperatures. Most neodymium magnets experience permanent decline in strength when heated above 80°C (depending on the shape and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
  • Magnets exposed to humidity can degrade. Therefore, for outdoor applications, we recommend waterproof types made of non-metallic composites,
  • Limited ability to create internal holes in the magnet – the use of a mechanical support is recommended,
  • Possible threat related to magnet particles may arise, in case of ingestion, which is notable in the health of young users. It should also be noted that small elements from these products may interfere with diagnostics when ingested,
  • High unit cost – neodymium magnets are pricier than other types of magnets (e.g., ferrite), which increases the cost of large-scale applications

Breakaway strength of the magnet in ideal conditionswhat contributes to it?

The given strength of the magnet means the optimal strength, calculated under optimal conditions, specifically:

  • using a steel plate with low carbon content, serving as a magnetic circuit closure
  • of a thickness of at least 10 mm
  • with a polished side
  • in conditions of no clearance
  • with vertical force applied
  • in normal thermal conditions

Magnet lifting force in use – key factors

Practical lifting force is determined by factors, by priority:

  • Air gap between the magnet and the plate, since even a very small distance (e.g. 0.5 mm) can cause a drop in lifting force of up to 50%.
  • Direction of applied force, because the maximum lifting capacity is achieved under perpendicular application. The force required to slide the magnet along the plate is usually several times lower.
  • Thickness of the plate, as a plate that is too thin causes part of the magnetic flux not to be used and to remain wasted in the air.
  • Material of the plate, because higher carbon content lowers holding force, while higher iron content increases it. The best choice is steel with high magnetic permeability and high saturation induction.
  • Surface of the plate, because the more smooth and polished it is, the better the contact and consequently the greater the magnetic saturation.
  • Operating temperature, since all permanent magnets have a negative temperature coefficient. This means that at high temperatures they are weaker, while at sub-zero temperatures they become slightly stronger.

* Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the holding force is lower. Moreover, even a small distance {between} the magnet and the plate decreases the load capacity.

Handle Neodymium Magnets Carefully

 Maintain neodymium magnets away from youngest children.

Neodymium magnets are not toys. You cannot allow them to become toys for children. In such a situation, surgery is necessary to remove them. In the worst case scenario, it can result in death.

Neodymium magnets are delicate and can easily break and shatter.

Neodymium magnets are characterized by considerable fragility. Neodymium magnetic are made of metal and coated with a shiny nickel, but they are not as durable as steel. In the event of a collision between two magnets, there may be a scattering of fragments in different directions. Protecting your eyes is crucial in such a situation.

Neodymium magnets can attract to each other, pinch the skin, and cause significant injuries.

Magnets will attract each other within a distance of several to around 10 cm from each other. Don't put your fingers in the path of magnet attraction, because a serious injury may occur. Depending on how huge the neodymium magnets are, they can lead to a cut or a fracture.

Neodymium magnets can become demagnetized at high temperatures.

Despite the fact that magnets have been found to maintain their efficacy up to temperatures of 80°C or 175°F, it's essential to consider that this threshold may fluctuate depending on the magnet's type, configuration, and intended usage.

Do not bring neodymium magnets close to GPS and smartphones.

Intense magnetic fields generated by neodymium magnets interfere with compasses and magnetometers used in navigation, as well as internal compasses of smartphones and GPS devices.

Keep neodymium magnets away from TV, wallet, and computer HDD.

The strong magnetic field generated by neodymium magnets can destroy magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, etc. devices. They can also destroy devices like video players, televisions, CRT computer monitors. Do not forget to keep neodymium magnets away from these electronic devices.

Neodymium magnets are not recommended for people with pacemakers.

Neodymium magnets generate very strong magnetic fields that can interfere with the operation of a pacemaker. This happens because such devices have a function to deactivate them in a magnetic field.

Neodymium magnets are the most powerful magnets ever invented. Their power can surprise you.

To use magnets properly, it is best to familiarize yourself with our information beforehand. This will help you avoid significant harm to your body and the magnets themselves.

The magnet coating contains nickel, so be cautious if you have a nickel allergy.

Studies show a small percentage of people have allergies to certain metals, including nickel. An allergic reaction often manifests as skin redness and rash. If you have a nickel allergy, you can try wearing gloves or simply avoid direct contact with nickel-plated neodymium magnets.

Dust and powder from neodymium magnets are highly flammable.

Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. Once crushed into fine powder or dust, this material becomes highly flammable.

Safety rules!

So that know how powerful neodymium magnets are and why they are so dangerous, read the article - Dangerous very strong neodymium magnets.

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