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UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread
magnetic holder internal thread
Catalog no 180420
GTIN/EAN: 5906301813798
Diameter Ø
75 mm [±1 mm]
Height
33 mm [±1 mm]
Height
18 mm [±1 mm]
Weight
475 g
Load capacity
162.00 kg / 1588.68 N
189.91 ZŁ with VAT / pcs + price for transport
154.40 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical details - UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread
Specification / characteristics - UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread
| properties | values |
|---|---|
| Cat. no. | 180420 |
| GTIN/EAN | 5906301813798 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 75 mm [±1 mm] |
| Height | 33 mm [±1 mm] |
| Height | 18 mm [±1 mm] |
| Weight | 475 g |
| Load capacity ~ ? | 162.00 kg / 1588.68 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% |
Ecology and recycling (GPSR)
| 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 ten years their attraction force decreases symbolically – ~1% (in testing),
- They do not lose their magnetic properties even under close interference source,
- In other words, due to the reflective finish of silver, the element becomes visually attractive,
- Neodymium magnets create maximum magnetic induction on a small surface, which allows for strong attraction,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures reaching 230°C and above...
- Possibility of individual shaping as well as adjusting to specific applications,
- Key role in electronics industry – they find application in HDD drives, drive modules, medical equipment, and multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which enables their usage in compact constructions
Weaknesses
- They are fragile upon heavy impacts. To avoid cracks, it is worth securing 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, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
- Due to limitations in creating threads and complex forms in magnets, we recommend using a housing - magnetic holder.
- Potential hazard to health – tiny shards of magnets can be dangerous, if swallowed, which gains importance in the context of child safety. Additionally, small elements of these magnets can be problematic in diagnostics medical when they are in the body.
- Due to neodymium price, their price exceeds standard values,
Pull force analysis
Highest magnetic holding force – what contributes to it?
- with the application of a sheet made of low-carbon steel, guaranteeing maximum field concentration
- possessing a thickness of min. 10 mm to ensure full flux closure
- with a surface free of scratches
- without any insulating layer between the magnet and steel
- under perpendicular force vector (90-degree angle)
- at conditions approx. 20°C
Key elements affecting lifting force
- Distance – the presence of any layer (rust, tape, air) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
- Direction of force – highest force is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
- Steel type – mild steel attracts best. Alloy steels decrease magnetic permeability and lifting capacity.
- Surface condition – ground elements ensure maximum contact, which improves force. Uneven metal weaken the grip.
- Heat – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).
Lifting capacity was assessed with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the load capacity is reduced by as much as 5 times. In addition, even a minimal clearance between the magnet and the plate reduces the lifting capacity.
Warnings
Beware of splinters
Despite the nickel coating, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may shatter into hazardous fragments.
Adults only
NdFeB magnets are not toys. Accidental ingestion of multiple magnets may result in them attracting across intestines, which constitutes a severe health hazard and requires immediate surgery.
Magnetic interference
A strong magnetic field interferes with the operation of magnetometers in smartphones and navigation systems. Maintain magnets close to a device to avoid damaging the sensors.
Health Danger
Individuals with a ICD have to keep an absolute distance from magnets. The magnetic field can interfere with the functioning of the implant.
Warning for allergy sufferers
Allergy Notice: The nickel-copper-nickel coating contains nickel. If skin irritation happens, cease working with magnets and use protective gear.
Threat to electronics
Do not bring magnets near a purse, laptop, or TV. The magnetism can permanently damage these devices and wipe information from cards.
Operating temperature
Monitor thermal conditions. Heating the magnet to high heat will ruin its properties and pulling force.
Dust explosion hazard
Mechanical processing of NdFeB material poses a fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
Do not underestimate power
Exercise caution. Rare earth magnets act from a long distance and connect with massive power, often faster than you can move away.
Serious injuries
Large magnets can break fingers in a fraction of a second. Under no circumstances put your hand betwixt two attracting surfaces.
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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