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UMGGW 88x8.5 [M6] GW / N38 - magnetic holder rubber internal thread
magnetic holder rubber internal thread
Catalog no 160309
GTIN/EAN: 5906301813675
Diameter Ø
88 mm [±1 mm]
Height
8.5 mm [±1 mm]
Weight
186 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
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Technical details - UMGGW 88x8.5 [M6] GW / N38 - magnetic holder rubber internal thread
Specification / characteristics - UMGGW 88x8.5 [M6] GW / N38 - magnetic holder rubber internal thread
| properties | values |
|---|---|
| Cat. no. | 160309 |
| GTIN/EAN | 5906301813675 |
| 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 | 186 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 |
Elemental analysis
| 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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other products
Advantages and disadvantages of neodymium magnets.
Advantages
- Their magnetic field is durable, and after approximately 10 years it drops only by ~1% (theoretically),
- They maintain their magnetic properties even under close interference source,
- A magnet with a shiny silver surface has better aesthetics,
- The surface of neodymium magnets generates a strong magnetic field – this is a distinguishing feature,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for action at temperatures reaching 230°C and above...
- Possibility of individual machining and adjusting to atypical applications,
- Universal use in modern technologies – they are commonly used in computer drives, electric drive systems, diagnostic systems, as well as complex engineering applications.
- Thanks to concentrated force, small magnets offer high operating force, with minimal size,
Cons
- They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
- When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- We recommend cover - magnetic holder, due to difficulties in creating nuts inside the magnet and complex shapes.
- Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, small elements of these magnets can disrupt the diagnostic process medical when they are in the body.
- With large orders the cost of neodymium magnets is a challenge,
Holding force characteristics
Optimal lifting capacity of a neodymium magnet – what it depends on?
- using a sheet made of low-carbon steel, acting as a circuit closing element
- with a cross-section of at least 10 mm
- with a plane free of scratches
- without any clearance between the magnet and steel
- during detachment in a direction vertical to the mounting surface
- in neutral thermal conditions
What influences lifting capacity in practice
- Clearance – existence of foreign body (rust, dirt, gap) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
- Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of generating force.
- Steel grade – ideal substrate is high-permeability steel. Stainless steels may have worse magnetic properties.
- Smoothness – full contact is obtained only on polished steel. Any scratches and bumps create air cushions, reducing force.
- Temperature – temperature increase results in weakening of induction. It is worth remembering the thermal limit for a given model.
Lifting capacity testing was carried out on a smooth plate of optimal thickness, under a perpendicular pulling force, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate decreases the load capacity.
Warnings
Danger to the youngest
Always store magnets away from children. Risk of swallowing is high, and the effects of magnets connecting inside the body are tragic.
Handling guide
Be careful. Neodymium magnets attract from a long distance and snap with massive power, often quicker than you can react.
Eye protection
Neodymium magnets are sintered ceramics, which means they are very brittle. Impact of two magnets leads to them breaking into small pieces.
Warning for heart patients
Health Alert: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.
Cards and drives
Powerful magnetic fields can erase data on payment cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.
Power loss in heat
Watch the temperature. Exposing the magnet to high heat will destroy its properties and pulling force.
Allergy Warning
Medical facts indicate that the nickel plating (the usual finish) is a potent allergen. For allergy sufferers, avoid direct skin contact or choose coated magnets.
Flammability
Mechanical processing of NdFeB material poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
Precision electronics
Remember: rare earth magnets generate a field that disrupts precision electronics. Keep a separation from your mobile, tablet, and GPS.
Crushing force
Protect your hands. Two large magnets will join instantly with a force of massive weight, destroying anything in their path. Be careful!
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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