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UMGW 32x18x8 [M6] GW / N38 - magnetic holder internal thread
magnetic holder internal thread
Catalog no 180318
GTIN/EAN: 5906301813743
Diameter Ø
32 mm [±1 mm]
Height
18 mm [±1 mm]
Height
8 mm [±1 mm]
Weight
42 g
Load capacity
34.00 kg / 333.43 N
15.22 ZŁ with VAT / pcs + price for transport
12.37 ZŁ net + 23% VAT / pcs
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Technical details - UMGW 32x18x8 [M6] GW / N38 - magnetic holder internal thread
Specification / characteristics - UMGW 32x18x8 [M6] GW / N38 - magnetic holder internal thread
| properties | values |
|---|---|
| Cat. no. | 180318 |
| GTIN/EAN | 5906301813743 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 32 mm [±1 mm] |
| Height | 18 mm [±1 mm] |
| Height | 8 mm [±1 mm] |
| Weight | 42 g |
| Load capacity ~ ? | 34.00 kg / 333.43 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% |
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 and disadvantages of rare earth magnets.
Benefits
- They do not lose power, even during approximately ten years – the decrease in strength is only ~1% (theoretically),
- They do not lose their magnetic properties even under strong external field,
- By covering with a smooth coating of nickel, the element acquires an elegant look,
- The surface of neodymium magnets generates a intense magnetic field – this is one of their assets,
- Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
- Possibility of individual modeling as well as modifying to complex requirements,
- Key role in electronics industry – they are commonly used in magnetic memories, electric motors, precision medical tools, and other advanced devices.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which enables their usage in small systems
Cons
- At very strong impacts they can break, therefore we advise placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- We suggest cover - magnetic holder, due to difficulties in producing threads inside the magnet and complicated shapes.
- Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which gains importance in the context of child health protection. It is also worth noting that small components of these devices are able to disrupt the diagnostic process medical after entering the body.
- With mass production the cost of neodymium magnets is economically unviable,
Pull force analysis
Maximum holding power of the magnet – what affects it?
- with the contact of a yoke made of special test steel, guaranteeing full magnetic saturation
- with a thickness minimum 10 mm
- with an ground contact surface
- with zero gap (without paint)
- under perpendicular application of breakaway force (90-degree angle)
- at ambient temperature room level
Determinants of practical lifting force of a magnet
- Gap (betwixt the magnet and the metal), because even a very small clearance (e.g. 0.5 mm) results in a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
- Force direction – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
- Material type – ideal substrate is high-permeability steel. Cast iron may generate lower lifting capacity.
- Surface quality – the more even the plate, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
- Temperature influence – high temperature reduces pulling force. Too high temperature can permanently demagnetize the magnet.
Lifting capacity was determined by applying a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate lowers the lifting capacity.
Safety rules for work with neodymium magnets
Bodily injuries
Danger of trauma: The attraction force is so great that it can result in hematomas, crushing, and broken bones. Use thick gloves.
Precision electronics
Be aware: rare earth magnets produce a field that disrupts precision electronics. Maintain a separation from your mobile, tablet, and navigation systems.
Warning for heart patients
Health Alert: Neodymium magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.
Swallowing risk
Only for adults. Tiny parts can be swallowed, leading to severe trauma. Store out of reach of children and animals.
Fire risk
Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this may cause fire.
Immense force
Be careful. Rare earth magnets attract from a long distance and snap with massive power, often quicker than you can move away.
Nickel coating and allergies
Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If redness appears, cease handling magnets and wear gloves.
Magnetic media
Intense magnetic fields can destroy records on credit cards, HDDs, and storage devices. Maintain a gap of at least 10 cm.
Maximum temperature
Keep cool. NdFeB magnets are susceptible to heat. If you need operation above 80°C, inquire about HT versions (H, SH, UH).
Magnet fragility
Watch out for shards. Magnets can explode upon violent connection, launching sharp fragments into the air. Wear goggles.
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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