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UMGGZ 34x6 [M4] GZ / N38 - rubber magnetic holder external thread
rubber magnetic holder external thread
Catalog no 340311
GTIN/EAN: 5906301814733
Diameter Ø
34 mm [±1 mm]
Height
6 mm [±1 mm]
Weight
26 g
Load capacity
7.70 kg / 75.51 N
9.84 ZŁ with VAT / pcs + price for transport
8.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Detailed specification - UMGGZ 34x6 [M4] GZ / N38 - rubber magnetic holder external thread
Specification / characteristics - UMGGZ 34x6 [M4] GZ / N38 - rubber magnetic holder external thread
| properties | values |
|---|---|
| Cat. no. | 340311 |
| GTIN/EAN | 5906301814733 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 34 mm [±1 mm] |
| Height | 6 mm [±1 mm] |
| Weight | 26 g |
| Load capacity ~ ? | 7.70 kg / 75.51 N |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N38
| properties | values | units |
|---|---|---|
| remenance Br [min. - max.] ? | 12.2-12.6 | kGs |
| remenance Br [min. - max.] ? | 1220-1260 | mT |
| coercivity bHc ? | 10.8-11.5 | kOe |
| coercivity bHc ? | 860-915 | kA/m |
| actual internal force iHc | ≥ 12 | kOe |
| actual internal force iHc | ≥ 955 | kA/m |
| energy density [min. - max.] ? | 36-38 | BH max MGOe |
| energy density [min. - max.] ? | 287-303 | 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 |
Chemical composition
| 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 |
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Pros and cons of neodymium magnets.
Strengths
- Their magnetic field remains stable, and after around 10 years it drops only by ~1% (according to research),
- They do not lose their magnetic properties even under strong external field,
- Thanks to the shiny finish, the surface of Ni-Cu-Ni, gold, or silver-plated gives an elegant appearance,
- Magnets exhibit extremely high magnetic induction on the outer side,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Possibility of detailed forming as well as modifying to complex applications,
- Significant place in high-tech industry – they are commonly used in data components, drive modules, diagnostic systems, as well as industrial machines.
- Thanks to concentrated force, small magnets offer high operating force, with minimal size,
Limitations
- To avoid cracks under impact, we recommend using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening 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
- Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
- Limited ability of producing nuts in the magnet and complex shapes - preferred is casing - magnetic holder.
- Potential hazard related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these products can complicate diagnosis medical when they are in the body.
- With budget limitations the cost of neodymium magnets is a challenge,
Holding force characteristics
Magnetic strength at its maximum – what affects it?
- using a plate made of low-carbon steel, acting as a ideal flux conductor
- possessing a massiveness of min. 10 mm to avoid saturation
- characterized by smoothness
- under conditions of gap-free contact (metal-to-metal)
- under axial application of breakaway force (90-degree angle)
- at ambient temperature approx. 20 degrees Celsius
Practical lifting capacity: influencing factors
- Air gap (between the magnet and the metal), since even a tiny distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to varnish, corrosion or dirt).
- Force direction – catalog parameter refers to pulling vertically. When slipping, the magnet holds much less (typically approx. 20-30% of nominal force).
- Element thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Steel grade – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
- Surface condition – smooth surfaces ensure maximum contact, which increases field saturation. Rough surfaces weaken the grip.
- Thermal factor – high temperature reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity was assessed by applying a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, in contrast under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a small distance between the magnet’s surface and the plate lowers the lifting capacity.
Safety rules for work with NdFeB magnets
Safe operation
Exercise caution. Neodymium magnets attract from a distance and connect with huge force, often faster than you can move away.
Allergy Warning
It is widely known that nickel (the usual finish) is a common allergen. For allergy sufferers, refrain from direct skin contact or opt for coated magnets.
Pacemakers
Health Alert: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.
Do not give to children
Absolutely store magnets out of reach of children. Ingestion danger is high, and the effects of magnets connecting inside the body are tragic.
Magnetic media
Powerful magnetic fields can erase data on credit cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.
Magnetic interference
A powerful magnetic field disrupts the operation of magnetometers in smartphones and navigation systems. Keep magnets close to a smartphone to avoid breaking the sensors.
Mechanical processing
Mechanical processing of neodymium magnets poses a fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.
Power loss in heat
Watch the temperature. Heating the magnet to high heat will permanently weaken its magnetic structure and pulling force.
Hand protection
Watch your fingers. Two large magnets will snap together instantly with a force of massive weight, crushing anything in their path. Exercise extreme caution!
Risk of cracking
NdFeB magnets are sintered ceramics, which means they are fragile like glass. Collision of two magnets leads to them breaking into small pieces.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
GLS kurier
Przesyłka będzie u Ciebie za 2-3 dni
14.99 ZŁ
InPost Paczkomaty 24/7
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12.30 ZŁ
Płatność przy odbiorze (pobranie):
GLS kurier
Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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