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UMGB 75x28 [M10x3] GW F200 GOLD +Lina GOBLIN / N42 - goblin magnetic holder

goblin magnetic holder

Catalog no 350440

GTIN/EAN: 5906301814825

5.00
Load capacity 310.00 kg / 3040.06 N
Diameter Ø
75 mm [±1 mm]
Height
28 mm [±1 mm]
Weight
900 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel
product parameters »

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Technical parameters - UMGB 75x28 [M10x3] GW F200 GOLD +Lina GOBLIN / N42 - goblin magnetic holder

Specification / characteristics - UMGB 75x28 [M10x3] GW F200 GOLD +Lina GOBLIN / N42 - goblin magnetic holder

properties
properties values
Cat. no. 350440
GTIN/EAN 5906301814825
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
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 ~ ? 310.00 kg / 3040.06 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N42

Specification / characteristics UMGB 75x28 [M10x3] GW F200 GOLD +Lina GOBLIN / N42 - goblin magnetic holder
properties values units
remenance Br [min. - max.] ? 12.9-13.2 kGs
remenance Br [min. - max.] ? 1290-1320 mT
coercivity bHc ? 10.8-12.0 kOe
coercivity bHc ? 860-955 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 40-42 BH max MGOe
energy density [min. - max.] ? 318-334 BH max KJ/m
max. temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°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 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²
Technical specification and ecology

Material specification

iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%

Environmental data

recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 350440-2026
Magnet Unit Converter

Force (pull)

Magnetic Induction

Just complete one field, and the tool fill in the rest automatically.

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Pros and cons of rare earth magnets.

Pros

Besides their high retention, neodymium magnets are valued for these benefits:
  • Their power is maintained, and after approximately 10 years it drops only by ~1% (theoretically),
  • They show high resistance to demagnetization induced by presence of other magnetic fields,
  • A magnet with a shiny gold surface is more attractive,
  • The surface of neodymium magnets generates a powerful magnetic field – this is one of their assets,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to flexibility in designing and the ability to adapt to unusual requirements,
  • Significant place in electronics industry – they are utilized in mass storage devices, motor assemblies, diagnostic systems, and industrial machines.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding 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 stable to moisture, in case of application outdoors
  • Due to limitations in creating threads and complicated shapes in magnets, we recommend using casing - magnetic mechanism.
  • Potential hazard related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these magnets are able to disrupt the diagnostic process medical after entering the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Best holding force of the magnet in ideal parameters – what affects it?

The force parameter is a result of laboratory testing performed under the following configuration:
  • with the application of a yoke made of special test steel, guaranteeing full magnetic saturation
  • possessing a thickness of min. 10 mm to ensure full flux closure
  • with a surface perfectly flat
  • under conditions of gap-free contact (metal-to-metal)
  • under axial force direction (90-degree angle)
  • at ambient temperature room level

Practical lifting capacity: influencing factors

During everyday use, the actual holding force is determined by a number of factors, ranked from the most important:
  • Space between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
  • Material type – ideal substrate is pure iron steel. Cast iron may generate lower lifting capacity.
  • Surface condition – smooth surfaces guarantee perfect abutment, which increases field saturation. Uneven metal reduce efficiency.
  • Temperature influence – high temperature weakens magnetic field. Too high temperature can permanently damage the magnet.

Lifting capacity was assessed by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, in contrast under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate lowers the lifting capacity.

Warnings
Medical interference

People with a ICD should maintain an absolute distance from magnets. The magnetism can disrupt the functioning of the life-saving device.

Magnetic interference

A powerful magnetic field disrupts the functioning of magnetometers in phones and GPS navigation. Maintain magnets close to a smartphone to prevent damaging the sensors.

Conscious usage

Handle magnets consciously. Their immense force can surprise even experienced users. Be vigilant and do not underestimate their power.

Finger safety

Watch your fingers. Two large magnets will snap together instantly with a force of several hundred kilograms, destroying anything in their path. Be careful!

Combustion hazard

Drilling and cutting of NdFeB material poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Permanent damage

Standard neodymium magnets (N-type) lose magnetization when the temperature exceeds 80°C. Damage is permanent.

Beware of splinters

NdFeB magnets are ceramic materials, meaning they are very brittle. Clashing of two magnets will cause them shattering into shards.

Nickel allergy

Allergy Notice: The nickel-copper-nickel coating contains nickel. If redness appears, cease handling magnets and wear gloves.

Keep away from computers

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

Product not for children

Absolutely keep magnets away from children. Risk of swallowing is high, and the effects of magnets connecting inside the body are tragic.

Important! Details about hazards in the article: Safety of working with magnets.