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UMGW 48x24x11.5 [M8] GW / N38 - magnetic holder internal thread
magnetic holder internal thread
Catalog no 180418
GTIN/EAN: 5906301813774
Diameter Ø
48 mm [±1 mm]
Height
24 mm [±1 mm]
Height
11.5 mm [±1 mm]
Weight
140 g
Load capacity
80.00 kg / 784.53 N
59.96 ZŁ with VAT / pcs + price for transport
48.75 ZŁ net + 23% VAT / pcs
bulk discounts:
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Force along with appearance of neodymium magnets can be tested using our
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Technical parameters of the product - UMGW 48x24x11.5 [M8] GW / N38 - magnetic holder internal thread
Specification / characteristics - UMGW 48x24x11.5 [M8] GW / N38 - magnetic holder internal thread
| properties | values |
|---|---|
| Cat. no. | 180418 |
| GTIN/EAN | 5906301813774 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 48 mm [±1 mm] |
| Height | 24 mm [±1 mm] |
| Height | 11.5 mm [±1 mm] |
| Weight | 140 g |
| Load capacity ~ ? | 80.00 kg / 784.53 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
- Their power is maintained, and after approximately 10 years it drops only by ~1% (theoretically),
- Magnets effectively defend themselves against loss of magnetization caused by ambient magnetic noise,
- A magnet with a metallic silver surface has an effective appearance,
- Magnets have exceptionally strong magnetic induction on the surface,
- Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
- In view of the possibility of free forming and customization to unique projects, neodymium magnets can be manufactured in a wide range of forms and dimensions, which makes them more universal,
- Universal use in modern industrial fields – they find application in hard drives, electric drive systems, medical equipment, as well as complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which allows their use in small systems
Disadvantages
- They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
- Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- We recommend cover - magnetic mount, due to difficulties in producing threads inside the magnet and complicated shapes.
- Health risk to health – tiny shards of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. Furthermore, small elements of these products are able to disrupt the diagnostic process medical in case of swallowing.
- With large orders the cost of neodymium magnets is a challenge,
Holding force characteristics
Breakaway strength of the magnet in ideal conditions – what it depends on?
- on a plate made of structural steel, effectively closing the magnetic flux
- possessing a thickness of min. 10 mm to avoid saturation
- with an polished touching surface
- without the slightest insulating layer between the magnet and steel
- during pulling in a direction vertical to the mounting surface
- at ambient temperature room level
Lifting capacity in real conditions – factors
- Clearance – the presence of any layer (rust, dirt, air) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
- Angle of force application – highest force is available only during perpendicular pulling. The shear force of the magnet along the surface is usually several times lower (approx. 1/5 of the lifting capacity).
- Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Steel grade – the best choice is pure iron steel. Stainless steels may generate lower lifting capacity.
- Base smoothness – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
- Thermal factor – hot environment reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity was determined with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under shearing force the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet and the plate reduces the holding force.
Warnings
Handling guide
Before use, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Think ahead.
Crushing risk
Risk of injury: The attraction force is so immense that it can cause blood blisters, crushing, and even bone fractures. Protective gloves are recommended.
Danger to pacemakers
For implant holders: Strong magnetic fields disrupt electronics. Keep minimum 30 cm distance or ask another person to work with the magnets.
Compass and GPS
A strong magnetic field disrupts the operation of magnetometers in smartphones and GPS navigation. Do not bring magnets close to a smartphone to prevent damaging the sensors.
Nickel coating and allergies
Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If redness occurs, cease handling magnets and wear gloves.
Cards and drives
Intense magnetic fields can destroy records on credit cards, HDDs, and storage devices. Keep a distance of at least 10 cm.
Combustion hazard
Combustion risk: Neodymium dust is explosive. Avoid machining magnets without safety gear as this risks ignition.
No play value
Strictly keep magnets out of reach of children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are fatal.
Thermal limits
Control the heat. Exposing the magnet above 80 degrees Celsius will ruin its properties and pulling force.
Magnets are brittle
Beware of splinters. Magnets can explode upon violent connection, ejecting 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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