UMGB 75x28 [M10x3] GW F200 GOLD +Lina GOBLIN / N42 - goblin magnetic holder
goblin magnetic holder
Catalog no 350440
GTIN/EAN: 5906301814825
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
255.00 ZŁ with VAT / pcs + price for transport
207.32 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical data - 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 | values |
|---|---|
| Cat. no. | 350440 |
| GTIN/EAN | 5906301814825 |
| 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 ~ ? | 310.00 kg / 3040.06 N |
| Coating | [NiCuNi] Nickel |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N42
| 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
| 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 |
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
See also offers
Strengths and weaknesses of neodymium magnets.
Pros
- They do not lose strength, even over nearly ten years – the reduction in lifting capacity is only ~1% (according to tests),
- They possess excellent resistance to magnetism drop when exposed to opposing magnetic fields,
- In other words, due to the aesthetic finish of silver, the element becomes visually attractive,
- Magnetic induction on the working part of the magnet is extremely intense,
- Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
- Thanks to freedom in constructing and the ability to modify to client solutions,
- Versatile presence in electronics industry – they are used in magnetic memories, electromotive mechanisms, medical devices, as well as technologically advanced constructions.
- Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,
Weaknesses
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- 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, in case of application outdoors
- We suggest cover - magnetic mount, due to difficulties in realizing nuts inside the magnet and complex shapes.
- Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that small elements of these magnets are able to complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities
Lifting parameters
Highest magnetic holding force – what contributes to it?
- with the application of a sheet made of low-carbon steel, ensuring full magnetic saturation
- with a thickness of at least 10 mm
- characterized by even structure
- with zero gap (without coatings)
- under vertical application of breakaway force (90-degree angle)
- at ambient temperature approx. 20 degrees Celsius
Lifting capacity in real conditions – factors
- Gap (between the magnet and the plate), since even a microscopic clearance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
- Steel type – low-carbon steel attracts best. Alloy steels reduce magnetic properties and lifting capacity.
- Plate texture – smooth surfaces guarantee perfect abutment, which improves field saturation. Uneven metal reduce efficiency.
- Thermal environment – temperature increase causes a temporary drop of induction. Check the maximum operating temperature for a given model.
Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, however under parallel forces the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet and the plate reduces the holding force.
Warnings
Immense force
Handle with care. Rare earth magnets act from a long distance and connect with massive power, often faster than you can move away.
Adults only
Product intended for adults. Tiny parts can be swallowed, leading to intestinal necrosis. Store out of reach of kids and pets.
Flammability
Mechanical processing of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.
Medical interference
People with a heart stimulator should keep an large gap from magnets. The magnetism can disrupt the operation of the implant.
Keep away from electronics
GPS units and smartphones are highly susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
Magnetic media
Device Safety: Strong magnets can ruin payment cards and sensitive devices (heart implants, medical aids, timepieces).
Protective goggles
Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.
Crushing risk
Pinching hazard: The pulling power is so great that it can result in blood blisters, pinching, and even bone fractures. Protective gloves are recommended.
Do not overheat magnets
Avoid heat. NdFeB magnets are susceptible to temperature. If you need operation above 80°C, look for special high-temperature series (H, SH, UH).
Allergic reactions
Certain individuals have a sensitization to nickel, which is the typical protective layer for neodymium magnets. Prolonged contact might lead to an allergic reaction. We recommend use safety gloves.
