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UMGGZ 88x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
rubber magnetic holder external thread
Catalog no 340313
GTIN/EAN: 5906301814757
Diameter Ø
88 mm [±1 mm]
Height
8.5 mm [±1 mm]
Weight
193 g
Load capacity
42.90 kg / 420.71 N
40.59 ZŁ with VAT / pcs + price for transport
33.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Product card - UMGGZ 88x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
Specification / characteristics - UMGGZ 88x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
| properties | values |
|---|---|
| Cat. no. | 340313 |
| GTIN/EAN | 5906301814757 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 88 mm [±1 mm] |
| Height | 8.5 mm [±1 mm] |
| Weight | 193 g |
| Load capacity ~ ? | 42.90 kg / 420.71 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 |
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 products
![SM 32x100 [2xM8] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-32x100-2xm8-cox.jpg "SM 32x100 [2xM8] / N42 - magnetic separator")
Strengths as well as weaknesses of Nd2Fe14B magnets.
Benefits
- They do not lose strength, even after around 10 years – the reduction in strength is only ~1% (according to tests),
- Neodymium magnets prove to be remarkably resistant to magnetic field loss caused by external magnetic fields,
- In other words, due to the reflective layer of silver, the element looks attractive,
- Magnets are characterized by impressive magnetic induction on the surface,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures approaching 230°C and above...
- Possibility of accurate modeling and adapting to atypical applications,
- Versatile presence in modern technologies – they find application in magnetic memories, electric motors, advanced medical instruments, as well as other advanced devices.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which enables their usage in miniature devices
Cons
- Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a steel housing, which not only secures them against impacts but also increases their durability
- Neodymium magnets lose their strength 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
- 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
- We recommend casing - magnetic mount, due to difficulties in creating threads inside the magnet and complicated shapes.
- Potential hazard related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that small elements of these products can be problematic in diagnostics medical when they are in the body.
- Due to neodymium price, their price is higher than average,
Holding force characteristics
Optimal lifting capacity of a neodymium magnet – what it depends on?
- using a sheet made of low-carbon steel, serving as a circuit closing element
- possessing a massiveness of min. 10 mm to ensure full flux closure
- characterized by smoothness
- with direct contact (no coatings)
- for force applied at a right angle (in the magnet axis)
- at ambient temperature approx. 20 degrees Celsius
Magnet lifting force in use – key factors
- Clearance – the presence of foreign body (paint, tape, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
- Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
- Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
- Steel type – low-carbon steel attracts best. Higher carbon content decrease magnetic properties and lifting capacity.
- Smoothness – full contact is obtained only on polished steel. Any scratches and bumps create air cushions, reducing force.
- Operating temperature – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).
Lifting capacity was assessed with the use of a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a small distance between the magnet and the plate reduces the lifting capacity.
Safety rules for work with neodymium magnets
Sensitization to coating
Allergy Notice: The nickel-copper-nickel coating contains nickel. If redness occurs, immediately stop working with magnets and wear gloves.
Mechanical processing
Machining of NdFeB material carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
Operating temperature
Standard neodymium magnets (N-type) lose magnetization when the temperature exceeds 80°C. This process is irreversible.
No play value
Always store magnets out of reach of children. Choking hazard is significant, and the consequences of magnets clamping inside the body are tragic.
Keep away from electronics
An intense magnetic field interferes with the operation of compasses in phones and GPS navigation. Maintain magnets near a device to avoid breaking the sensors.
Hand protection
Big blocks can crush fingers instantly. Do not place your hand between two strong magnets.
Handling guide
Before starting, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.
Keep away from computers
Do not bring magnets close to a wallet, computer, or screen. The magnetism can destroy these devices and erase data from cards.
Eye protection
Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Wear goggles.
Pacemakers
For implant holders: Strong magnetic fields disrupt medical devices. Maintain minimum 30 cm distance or request help to work with the magnets.
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
Przesyłka będzie u Ciebie za 1-2 dni
12.30 ZŁ
Płatność przy odbiorze (pobranie):
GLS kurier
Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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