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UMGW 60x30x15 [M10] GW / N38 - magnetic holder internal thread

magnetic holder internal thread

Catalog no 180419

GTIN: 5906301813781

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

112 kg / 1098.34 N

102.96 with VAT / pcs + price for transport

83.71 ZŁ net + 23% VAT / pcs

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UMGW 60x30x15 [M10] GW / N38 - magnetic holder internal thread

Specification/characteristics UMGW 60x30x15 [M10] GW / N38 - magnetic holder internal thread
properties
values
Cat. no.
180419
GTIN
5906301813781
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 ~ ?
112 kg / 1098.34 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 female thread can be universal tools, used across manufacturing as well as everyday applications, such as construction. They contain a neodymium magnet, usually neodymium, embedded within a metal shell, coated with zinc for corrosion protection. The female thread, available in sizes from M4 to M8, enables insertion of screws, which facilitates assembly of various components, like nameplates, tools, or lamps. They operate via a powerful magnetic zone, which concentrates at the mounting point, providing load capacity ranging from one to sixty kilograms, based on mounting dimensions. They are especially useful in the automotive industry, for example, for attaching car body components, and also in advertising, for poster placement. Certain types have a rubber coating, e.g. in black or yellow, which protects surfaces from scratches and improves moisture resistance. Advantages cover high durability, ease of installation thanks to the thread, and the ability to transport heavy ferromagnetic objects. Still, the grip strength relies on surface thickness, type of steel, or distance between the holder and the component. Preventing mechanical shocks is crucial, as NdFeB magnets are brittle, and over-tightening the bolt can cause damage. Moreover, a strong magnetic field may affect electronic devices, such as smartphones or magnetic cards, therefore mounts should be stored away from those devices. It is recommended to choose holders from reputable manufacturers, to ensure high quality and safe use during operation.

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to their pulling strength, neodymium magnets provide the following advantages:

  • They virtually do not lose power, because even after ten years, the decline in efficiency is only ~1% (based on calculations),
  • They show exceptional resistance to demagnetization from outside magnetic sources,
  • Because of the brilliant layer of gold, the component looks visually appealing,
  • The outer field strength of the magnet shows remarkable magnetic properties,
  • 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 shape),
  • Thanks to the flexibility in shaping and the capability to adapt to unique requirements, neodymium magnets can be created in various configurations, which expands their usage potential,
  • Important function in cutting-edge sectors – they find application in computer drives, electric motors, clinical machines or even other advanced devices,
  • Compactness – despite their small size, they provide high effectiveness, making them ideal for precision applications

Disadvantages of rare earth magnets:

  • They are fragile when subjected to a powerful impact. If the magnets are exposed to external force, we recommend in a protective enclosure. The steel housing, in the form of a holder, protects the magnet from breakage and additionally strengthens its overall strength,
  • They lose field intensity at elevated temperatures. Most neodymium magnets experience permanent loss in strength when heated above 80°C (depending on the geometry and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
  • Magnets exposed to wet conditions can rust. Therefore, for outdoor applications, it's best to use waterproof types made of rubber,
  • The use of a protective casing or external holder is recommended, since machining threads in neodymium magnets is restricted,
  • Possible threat due to small fragments may arise, when consumed by mistake, which is significant in the family environments. It should also be noted that small elements from these devices may disrupt scanning once in the system,
  • High unit cost – neodymium magnets are costlier than other types of magnets (e.g., ferrite), which may limit large-scale applications

Magnetic strength at its maximum – what it depends on?

The given holding capacity of the magnet represents the highest holding force, measured under optimal conditions, namely:

  • using a steel plate with low carbon content, serving as a magnetic circuit closure
  • with a thickness of minimum 10 mm
  • with a smooth surface
  • with no separation
  • with vertical force applied
  • at room temperature

Practical aspects of lifting capacity – factors

The lifting capacity of a magnet depends on in practice the following factors, ordered from most important to least significant:

  • 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 tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance {between} the magnet’s surface and the plate decreases the lifting capacity.

Be Cautious with Neodymium Magnets

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

Neodymium magnets generate intense magnetic fields that can damage magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, or other devices. They can also destroy videos, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Keep neodymium magnets away from 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.

The magnet is coated with nickel - be careful if you have an 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, try wearing gloves or avoid direct contact with nickel-plated neodymium magnets.

Magnets made of neodymium are extremely delicate, they easily crack as well as can become damaged.

Neodymium magnets are fragile as well as will crack if allowed to collide with each other, even from a distance of a few centimeters. They are coated with a shiny nickel plating similar to steel, but they are not as hard. At the moment of connection between the magnets, small sharp metal fragments can be propelled in various directions at high speed. Eye protection is recommended.

Neodymium magnets are over 10 times stronger than ferrite magnets (the ones in speakers), and their strength can shock you.

Read the information on our website on how to properly utilize neodymium magnets and avoid significant harm to your body and unintentional damage to the magnets.

Neodymium magnets can become demagnetized at high temperatures.

Whilst Neodymium magnets can demagnetize at high temperatures, it's important to note that the extent of this effect can vary based on factors such as the magnet's material, shape, and intended application.

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

Magnets may crack or crumble with uncontrolled connecting to each other. You can't approach them to each other. At a distance less than 10 cm you should hold them very firmly.

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.

 It is important to keep neodymium magnets away from children.

Remember that neodymium magnets are not toys. Do not allow children to play with them. In the case of swallowing multiple magnets simultaneously, they can attract to each other through the intestinal walls. In the worst case scenario, this can lead to death.

Neodymium magnets should not be near people with pacemakers.

In the case of neodymium magnets, there is a strong magnetic field. As a result, it interferes with the operation of a heart pacemaker. However, if the magnetic field does not affect the device, it can damage its components or deactivate the device when it is in a magnetic field.

Be careful!

So you are aware of why neodymium magnets are so dangerous, see the article titled How dangerous are very powerful neodymium magnets?.

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tel: +48 888 99 98 98