e-mail: bok@dhit.pl

neodymium magnets

We offer yellow color magnetic Nd2Fe14B - our store's offer. Practically all magnesy on our website are available for immediate delivery (see the list). See the magnet price list for more details see the magnet price list

Magnet for water searching F200 GOLD

Where to buy very strong neodymium magnet? Magnetic holders in airtight and durable steel casing are excellent for use in difficult, demanding weather conditions, including during snow and rain check

magnets with holders

Holders with magnets can be used to facilitate manufacturing, underwater exploration, or finding meteors from gold check...

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Dhit sp. z o.o.
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UMGB 75x28 [M10x3] GW F200 PLATINIUM + Lina GOBLIN / N52 - goblin magnetic holder

goblin magnetic holder

Catalog no 350441

GTIN: 5906301814832

5

Diameter Ø

75 mm [±1 mm]

Height

28 mm [±1 mm]

Weight

900 g

Magnetization Direction

↑ axial

Load capacity

365 kg / 3579.43 N

Coating

[NiCuNi] nickel

280.00 with VAT / pcs + price for transport

227.64 ZŁ net + 23% VAT / pcs

bulk discounts:

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price from 1 pcs
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Specifications and form of neodymium magnets can be calculated using our power calculator.

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UMGB 75x28 [M10x3] GW F200 PLATINIUM + Lina GOBLIN / N52 - goblin magnetic holder
Specification/characteristics UMGB 75x28 [M10x3] GW F200 PLATINIUM + Lina GOBLIN / N52 - goblin magnetic holder
properties
values
Cat. no.
350441
GTIN
5906301814832
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
75 mm [±1 mm]
Height
28 mm [±1 mm]
Weight
900 g
Magnetization Direction
↑ axial
Load capacity ~ ?
365 kg / 3579.43 N
Coating
[NiCuNi] nickel
Manufacturing Tolerance
±1 mm

Magnetic properties of material N52

properties
values
units
remenance Br [Min. - Max.] ?
14.2-14.7
kGs
remenance Br [Min. - Max.] ?
1420-1470
T
coercivity bHc ?
10.8-12.5
kOe
coercivity bHc ?
860-995
kA/m
actual internal force iHc
≥ 12
kOe
actual internal force iHc
≥ 955
kA/m
energy density [Min. - Max.] ?
48-53
BH max MGOe
energy density [Min. - Max.] ?
380-422
BH max KJ/m
max. temperature ?
≤ 80
°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 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

Pros and cons of neodymium magnets.

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

  • They do not lose power, even during nearly 10 years – the reduction in power is only ~1% (theoretically),
  • Magnets effectively resist against demagnetization caused by foreign field sources,
  • By applying a reflective coating of nickel, the element gains an aesthetic look,
  • The surface of neodymium magnets generates a unique magnetic field – this is a distinguishing feature,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • In view of the potential of precise molding and customization to specialized requirements, neodymium magnets can be manufactured in a wide range of forms and dimensions, which amplifies use scope,
  • Universal use in electronics industry – they serve a role in data components, electric drive systems, precision medical tools, and modern systems.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages of NdFeB magnets:

  • At very strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • Due to limitations in producing threads and complex shapes in magnets, we propose using cover - magnetic mechanism.
  • Health risk to health – tiny shards of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child health protection. It is also worth noting that small elements of these products are able to be problematic in diagnostics medical after entering the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Maximum holding power of the magnet – what contributes to it?

The lifting capacity listed is a result of laboratory testing performed under standard conditions:

  • using a base made of low-carbon steel, acting as a ideal flux conductor
  • with a thickness no less than 10 mm
  • characterized by lack of roughness
  • under conditions of ideal adhesion (metal-to-metal)
  • under vertical force vector (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Determinants of practical lifting force of a magnet

Real force is affected by specific conditions, mainly (from priority):

  • Distance (between the magnet and the plate), since even a microscopic clearance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to paint, corrosion or dirt).
  • Force direction – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits much less (often approx. 20-30% of nominal force).
  • Plate thickness – too thin plate does not close the flux, causing part of the flux to be wasted to the other side.
  • Chemical composition of the base – low-carbon steel gives the best results. Alloy admixtures lower magnetic properties and holding force.
  • Surface finish – full contact is possible only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
  • Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

* Lifting capacity was determined using a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under shearing force the load capacity is reduced by as much as 5 times. Additionally, even a small distance {between} the magnet and the plate reduces the holding force.

H&S for magnets

Caution required

Before starting, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.

Demagnetization risk

Control the heat. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and strength.

Medical interference

People with a heart stimulator have to maintain an safe separation from magnets. The magnetic field can disrupt the operation of the implant.

Product not for children

Only for adults. Tiny parts can be swallowed, leading to intestinal necrosis. Keep away from children and animals.

Mechanical processing

Machining of neodymium magnets poses a fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Magnet fragility

Despite metallic appearance, the material is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Compass and GPS

Be aware: neodymium magnets generate a field that interferes with precision electronics. Maintain a safe distance from your mobile, device, and GPS.

Physical harm

Watch your fingers. Two large magnets will snap together immediately with a force of massive weight, destroying everything in their path. Be careful!

Safe distance

Equipment safety: Strong magnets can damage payment cards and sensitive devices (heart implants, medical aids, timepieces).

Skin irritation risks

Medical facts indicate that nickel (standard magnet coating) is a common allergen. For allergy sufferers, avoid direct skin contact or select versions in plastic housing.

Warning!

Learn more about risks in the article: Safety of working with magnets.

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98