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UMP 94x28 [3xM10] GW F300 GOLD / N38 - search holder

search holder

Catalog no 210447

GTIN: 5906301814115

Diameter Ø [±0,1 mm]

94 mm

Height [±0,1 mm]

28 mm

Weight

1600 g

Load capacity

330 kg / 3236.19 N

Coating

[NiCuNi] nickel

200.00 ZŁ with VAT / pcs + price for transport

162.60 ZŁ net + 23% VAT / pcs

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UMP 94x28 [3xM10] GW F300 GOLD / N38 - search holder

Specification/characteristics UMP 94x28 [3xM10] GW F300 GOLD / N38 - search holder

properties

values

Cat. no.

210447

GTIN

5906301814115

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

94 mm [±0,1 mm]

Height

28 mm [±0,1 mm]

Weight

1600 g [±0,1 mm]

Load capacity ~ ?

330 kg / 3236.19 N

Coating

[NiCuNi] nickel

Manufacturing Tolerance

± 0.1 mm

Magnetic properties of material N38

properties

values

units

coercivity bHc ?

860-915

kA/m

coercivity bHc ?

10.8-11.5

kOe

energy density [Min. - Max.] ?

287-303

BH max KJ/m

energy density [Min. - Max.] ?

36-38

BH max MGOe

remenance Br [Min. - Max.] ?

12.2-12.6

kGs

remenance Br [Min. - Max.] ?

1220-1260

actual internal force iHc

≥ 955

kA/m

actual internal force iHc

≥ 12

kOe

max. temperature ?

≤ 80

°C

Physical properties of NdFeB

properties

values

units

Vickers hardness

≥550

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

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For underwater searches, we recommend UMP 94x28 [3xM10] GW F300 GOLD / N38, which is exceptionally strong and has an impressive magnetic pulling force of approximately ~330 kg. This model is perfect for retrieving metal objects at the bottom of water bodies.

Magnetic holders are efficient for searching in water environments due to their high lifting force. UMP 94x28 [3xM10] GW F300 GOLD / N38 weighing 1600 grams with a pulling force of ~330 kg is a great choice for recovering metallic findings.

When choosing a magnet for underwater searches, you should pay attention to the number of Gauss or Tesla value, which determines the lifting force. UMP 94x28 [3xM10] GW F300 GOLD / N38 has a pulling force of approximately ~330 kg, making it a effective solution for retrieving objects with significant mass. Remember that the maximum strength is achieved with the top attachment, while the side attachment offers only 10%-25% of that power.

The sideways force of a magnetic holder is typically lower than the adhesive force because it depends on the fraction of the magnetic field that interacts with the metal surface. In the case of UMP 94x28 [3xM10] GW F300 GOLD / N38 with a lifting capacity of ~330 kg, maximum power are achieved with the top attachment, while the side holder offers only 10%-25% of the stated power.

he attraction force was measured under laboratory conditions, using a smooth S235 low-carbon steel plate with a thickness of 10 mm, with the application of lifting force in a perpendicular manner. In a situation where the force acts parallelly, the magnet's lifting capacity can be five times lower! Any gap between the magnet and the plate can result in a reduction in the attraction force.

magnetic holder strength F200 GOLD F300 GOLD

Advantages as well as disadvantages of neodymium magnets NdFeB.

Besides their stability, neodymium magnets are valued for these benefits:

Their strength is durable, and after approximately 10 years, it drops only by ~1% (theoretically),
They show exceptional resistance to demagnetization from outside magnetic sources,
The use of a polished nickel surface provides a refined finish,
They exhibit elevated levels of magnetic induction near the outer area of the magnet,
Thanks to their high temperature resistance, they can operate (depending on the geometry) even at temperatures up to 230°C or more,
The ability for custom shaping and adaptation to individual needs – neodymium magnets can be manufactured in a wide range of shapes and sizes, which enhances their versatility in applications,
Wide application in modern technologies – they find application in HDDs, rotating machines, diagnostic apparatus and other advanced devices,
Relatively small size with high magnetic force – neodymium magnets offer impressive pulling strength in small dimensions, which allows for use in small systems

Disadvantages of magnetic elements:

They may fracture when subjected to a heavy impact. If the magnets are exposed to physical collisions, they should be placed in a steel housing. The steel housing, in the form of a holder, protects the magnet from damage , and at the same time enhances its overall durability,
They lose magnetic force at high temperatures. Most neodymium magnets experience permanent loss 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,
Due to corrosion risk in humid conditions, it is common to use sealed magnets made of plastic for outdoor use,
Using a cover – such as a magnetic holder – is advised due to the restrictions in manufacturing threads directly in the magnet,
Safety concern linked to microscopic shards may arise, in case of ingestion, which is notable in the family environments. Additionally, minuscule fragments from these assemblies might complicate medical imaging if inside the body,
High unit cost – neodymium magnets are costlier than other types of magnets (e.g., ferrite), which can restrict large-scale applications

Be Cautious with Neodymium Magnets

Dust and powder from neodymium magnets are 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.

Under no circumstances should neodymium magnets be brought 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.

Avoid contact with neodymium magnets if you have a nickel allergy.

Studies clearly indicate a small percentage of people who suffer from metal allergies such as 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.

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

If have a finger between or on the path of attracting magnets, there may be a serious cut or a fracture.

Neodymium magnets are not recommended for people with pacemakers.

Neodymium magnets generate strong magnetic fields. As a result, they interfere with the operation of a pacemaker. This happens because such devices have a function to deactivate them in a magnetic field.

Neodymium magnets can become demagnetized at high temperatures.

Despite the fact that magnets have been observed 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.

Maintain neodymium magnets far from children.

Not all neodymium magnets are toys, so do not let children play with them. Small magnets pose a serious choking hazard or can attract to each other in the intestines. In such cases, the only solution is to undergo surgery to remove the magnets, and otherwise, it can even lead to death.

Do not place neodymium magnets near a computer HDD, TV, and wallet.

Strong magnetic fields emitted by neodymium magnets can destroy magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other devices. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. Avoid placing neodymium magnets in close proximity to electronic devices.

Neodymium magnets are the most powerful magnets ever created, and their strength can surprise you.

Please review the information on how to handle neodymium magnets and avoid significant harm to your body, as well as prevent unintentional disruption to the magnets.

Neodymium magnets are known for being fragile, which can cause them to shatter.

Neodymium magnets are characterized by considerable fragility. Magnets made of neodymium 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.

Caution!

In order for you to know how strong neodymium magnets are and why they are so dangerous, read the article - Dangerous strong neodymium magnets.