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UMGGZ 66x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
rubber magnetic holder external thread
Catalog no 340423
GTIN/EAN: 5906301814764
Diameter Ø
66 mm [±1 mm]
Height
8.5 mm [±1 mm]
Weight
100 g
Load capacity
18.40 kg / 180.44 N
23.37 ZŁ with VAT / pcs + price for transport
19.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical data of the product - UMGGZ 66x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
Specification / characteristics - UMGGZ 66x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
| properties | values |
|---|---|
| Cat. no. | 340423 |
| GTIN/EAN | 5906301814764 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 66 mm [±1 mm] |
| Height | 8.5 mm [±1 mm] |
| Weight | 100 g |
| Load capacity ~ ? | 18.40 kg / 180.44 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 |
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Strengths as well as weaknesses of Nd2Fe14B magnets.
Advantages
- They have constant strength, and over around 10 years their attraction force decreases symbolically – ~1% (in testing),
- They are resistant to demagnetization induced by external disturbances,
- The use of an elegant layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- Magnetic induction on the top side of the magnet is exceptional,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling functioning at temperatures approaching 230°C and above...
- Possibility of exact creating and modifying to precise applications,
- Universal use in modern technologies – they find application in data components, electromotive mechanisms, medical devices, as well as modern systems.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Limitations
- To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
- We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
- Due to limitations in creating nuts and complex forms in magnets, we propose using casing - magnetic mechanism.
- Potential hazard related to microscopic parts of magnets are risky, in case of ingestion, which becomes key in the context of child safety. It is also worth noting that small components of these magnets can be problematic in diagnostics medical in case of swallowing.
- With budget limitations the cost of neodymium magnets is a challenge,
Lifting parameters
Magnetic strength at its maximum – what contributes to it?
- on a block made of mild steel, effectively closing the magnetic flux
- with a thickness minimum 10 mm
- with an polished contact surface
- under conditions of gap-free contact (metal-to-metal)
- under vertical force vector (90-degree angle)
- at temperature room level
Practical lifting capacity: influencing factors
- Distance (betwixt the magnet and the plate), because even a microscopic clearance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
- Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the maximum value.
- Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Material composition – different alloys reacts the same. High carbon content weaken the interaction with the magnet.
- Surface finish – ideal contact is possible only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
- Temperature influence – high temperature weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity was measured by applying a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, in contrast under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a minimal clearance between the magnet and the plate reduces the load capacity.
Warnings
Bone fractures
Watch your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!
Do not drill into magnets
Combustion risk: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.
Keep away from computers
Powerful magnetic fields can erase data on credit cards, hard drives, and other magnetic media. Keep a distance of min. 10 cm.
Keep away from electronics
A powerful magnetic field negatively affects the operation of compasses in smartphones and GPS navigation. Do not bring magnets near a device to avoid breaking the sensors.
Skin irritation risks
Studies show that the nickel plating (the usual finish) is a strong allergen. If your skin reacts to metals, avoid direct skin contact or opt for versions in plastic housing.
Respect the power
Handle magnets consciously. Their huge power can shock even experienced users. Be vigilant and do not underestimate their force.
Life threat
Patients with a ICD should keep an safe separation from magnets. The magnetism can interfere with the functioning of the implant.
Permanent damage
Standard neodymium magnets (N-type) lose power when the temperature surpasses 80°C. Damage is permanent.
Keep away from children
Always keep magnets out of reach of children. Choking hazard is significant, and the effects of magnets connecting inside the body are fatal.
Material brittleness
Protect your eyes. Magnets can explode upon uncontrolled impact, launching shards into the air. Eye protection is mandatory.
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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