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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
bulk discounts:
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Technical of the product - 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 |
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% |
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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Advantages as well as disadvantages of rare earth magnets.
Strengths
- Their magnetic field is durable, and after around ten years it drops only by ~1% (according to research),
- They have excellent resistance to weakening of magnetic properties due to external magnetic sources,
- In other words, due to the aesthetic layer of gold, the element looks attractive,
- Magnetic induction on the working part of the magnet is extremely intense,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- Possibility of individual forming and adapting to defined conditions,
- Universal use in electronics industry – they find application in mass storage devices, electric drive systems, diagnostic systems, and industrial machines.
- Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,
Cons
- To avoid cracks under impact, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
- Neodymium magnets decrease their force 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 stability even at temperatures up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
- Due to limitations in producing nuts and complicated shapes in magnets, we recommend using cover - magnetic holder.
- Potential hazard to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the aspect of protecting the youngest. It is also worth noting that small elements of these products are able to complicate diagnosis medical when they are in the body.
- With large orders the cost of neodymium magnets can be a barrier,
Pull force analysis
Optimal lifting capacity of a neodymium magnet – what affects it?
- on a plate made of structural steel, perfectly concentrating the magnetic field
- possessing a thickness of minimum 10 mm to avoid saturation
- with a surface perfectly flat
- without any clearance between the magnet and steel
- under vertical force vector (90-degree angle)
- at temperature room level
Key elements affecting lifting force
- Gap (between the magnet and the metal), since even a tiny clearance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to paint, rust or dirt).
- Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Steel thickness – too thin sheet causes magnetic saturation, causing part of the power to be escaped to the other side.
- Steel type – mild steel gives the best results. Alloy steels decrease magnetic permeability and lifting capacity.
- Plate texture – smooth surfaces ensure maximum contact, which improves field saturation. Uneven metal weaken the grip.
- Temperature influence – hot environment reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity was measured with the use of a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the load capacity is reduced by as much as fivefold. Additionally, even a slight gap between the magnet and the plate reduces the holding force.
Safe handling of NdFeB magnets
Thermal limits
Watch the temperature. Heating the magnet to high heat will destroy its magnetic structure and pulling force.
Serious injuries
Risk of injury: The pulling power is so immense that it can cause hematomas, pinching, and even bone fractures. Use thick gloves.
Phone sensors
Be aware: neodymium magnets generate a field that disrupts precision electronics. Maintain a separation from your phone, device, and navigation systems.
Life threat
Individuals with a ICD must keep an safe separation from magnets. The magnetic field can interfere with the operation of the life-saving device.
Nickel coating and allergies
Certain individuals suffer from a hypersensitivity to Ni, which is the standard coating for NdFeB magnets. Prolonged contact may cause an allergic reaction. It is best to use protective gloves.
Risk of cracking
Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Wear goggles.
Flammability
Fire warning: Rare earth powder is highly flammable. Do not process magnets without safety gear as this may cause fire.
Protect data
Do not bring magnets close to a purse, computer, or screen. The magnetic field can permanently damage these devices and wipe information from cards.
Caution required
Before starting, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.
Danger to the youngest
Only for adults. Tiny parts pose a choking risk, leading to severe trauma. Store out of reach of children and animals.
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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