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neodymium magnets

We offer blue color magnets Nd2Fe14B - our store's offer. Practically all magnesy neodymowe in our store are available for immediate purchase (check the list). See the magnet pricing for more details see the magnet price list

Magnets for water searching F200 GOLD

Where to buy strong magnet? Holders with magnets in airtight and durable steel casing are excellent for use in variable and difficult weather conditions, including snow and rain see

magnets with holders

Holders with magnets can be applied to improve production, underwater exploration, or finding meteorites made of metal see...

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Dhit sp. z o.o.
Product on order Ships in 3-5 days

UMP 75x24 [M8+M10] GW F 200 kg - search holder

search holder

Catalog no 210336

GTIN: 5906301813958

0

Diameter Ø [±0,1 mm]

75 mm

Height [±0,1 mm]

24 mm

Weight

900 g

Load capacity

280 kg / 2745.86 N

Coating

[NiCuNi] nickel

200.00 with VAT / pcs + price for transport

162.60 ZŁ net + 23% VAT / pcs

bulk discounts:

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UMP 75x24 [M8+M10] GW F 200 kg - search holder
Specification/characteristics UMP 75x24 [M8+M10] GW F 200 kg - search holder
properties
values
Cat. no.
210336
GTIN
5906301813958
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
75 mm [±0,1 mm]
Height
24 mm [±0,1 mm]
Weight
900 g [±0,1 mm]
Load capacity ~ ?
280 kg / 2745.86 N
Coating
[NiCuNi] nickel
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material

properties
values
units

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 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

It is worth betting on proven F200, F300, or F550 models from our offer, which guarantee real power. Model UMP 75x24 [M8+M10] GW F 200 kg offers an optimal weight-to-pull force ratio, which is important for repeated throwing. For beginners, we recommend lighter single-sided models (F80-F200), for advanced users - heavier double-sided (Two-Side) ones.
The 2xTwo-Side version is more versatile, allowing the eyelet to be mounted in two positions. Top mounting works well when fishing from a bridge, pier, or well (vertical technique). The double-sided version increases search efficiency by 100%.
Our holders have a thick steel housing covered with an anti-corrosion layer (chrome, nickel, zinc). The housing significantly increases lifespan but does not make the magnet completely indestructible. Maintenance (e.g., WD-40) prevents surface corrosion of the steel housing.
We offer both standalone holders and ready-made gift sets (depending on the selected option in the store). A full set usually contains: magnet, polypropylene rope with appropriate strength, protective gloves, hook, and carabiner. We recommend always securing the thread with glue or tightening the eyelet firmly before first use.
It is a technical parameter defining perpendicular break force, not the weight of an object in water. The magnet may slide on round elements (bicycle frame) due to the small contact area. Therefore, to pull objects weighing 10kg from the water, a magnet with a capacity of 200-300kg is often needed.
Searches are allowed as long as you do not interfere with archaeological sites or search for weapons. Magnet fishing is an eco-friendly hobby if you clean the river from trash and scrap.

Pros and cons of neodymium magnets.

Apart from their consistent power, neodymium magnets have these key benefits:

  • They retain magnetic properties for almost ten years – the drop is just ~1% (according to analyses),
  • Neodymium magnets are characterized by extremely resistant to loss of magnetic properties caused by external interference,
  • In other words, due to the metallic finish of silver, the element gains a professional look,
  • The surface of neodymium magnets generates a strong magnetic field – this is a distinguishing feature,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Possibility of individual creating and optimizing to defined needs,
  • Fundamental importance in innovative solutions – they are utilized in magnetic memories, motor assemblies, medical equipment, also multitasking production systems.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages of neodymium magnets:

  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a special holder, which not only protects them against impacts but also raises their durability
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • Due to limitations in realizing threads and complex shapes in magnets, we recommend using a housing - magnetic mechanism.
  • Possible danger related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child health protection. Additionally, tiny parts of these products are able to be problematic in diagnostics medical after entering the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Maximum holding power of the magnet – what affects it?

The specified lifting capacity refers to the maximum value, measured under laboratory conditions, meaning:

  • using a plate made of low-carbon steel, functioning as a ideal flux conductor
  • possessing a massiveness of minimum 10 mm to avoid saturation
  • characterized by smoothness
  • under conditions of no distance (metal-to-metal)
  • for force acting at a right angle (in the magnet axis)
  • at conditions approx. 20°C

Determinants of lifting force in real conditions

During everyday use, the actual holding force is determined by a number of factors, presented from the most important:

  • Air gap (between the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to varnish, rust or debris).
  • Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet holds much less (typically approx. 20-30% of nominal force).
  • Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
  • Material composition – different alloys attracts identically. High carbon content weaken the interaction with the magnet.
  • Surface finish – full contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Operating temperature – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

* Lifting capacity was determined by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under shearing force the load capacity is reduced by as much as fivefold. In addition, even a slight gap {between} the magnet and the plate reduces the holding force.

H&S for magnets

Hand protection

Risk of injury: The attraction force is so immense that it can result in hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Heat warning

Watch the temperature. Exposing the magnet above 80 degrees Celsius will destroy its magnetic structure and strength.

Safe distance

Avoid bringing magnets near a wallet, computer, or TV. The magnetism can permanently damage these devices and wipe information from cards.

Keep away from children

Always store magnets away from children. Choking hazard is high, and the consequences of magnets connecting inside the body are tragic.

Flammability

Fire warning: Neodymium dust is explosive. Do not process magnets without safety gear as this risks ignition.

Handling guide

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

Warning for allergy sufferers

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

Phone sensors

A powerful magnetic field negatively affects the operation of compasses in phones and navigation systems. Keep magnets near a device to prevent breaking the sensors.

Pacemakers

Health Alert: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Magnet fragility

Neodymium magnets are ceramic materials, meaning they are fragile like glass. Impact of two magnets leads to them cracking into shards.

Caution!

Want to know more? Read our article: Why are neodymium magnets dangerous?

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98