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UMGGW 22x6 [M4] GW / N38 - magnetic holder rubber internal thread
magnetic holder rubber internal thread
Catalog no 160304
GTIN/EAN: 5906301813620
Diameter Ø
22 mm [±1 mm]
Height
6 mm [±1 mm]
Weight
12 g
Load capacity
5.10 kg / 50.01 N
7.38 ZŁ with VAT / pcs + price for transport
6.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical - UMGGW 22x6 [M4] GW / N38 - magnetic holder rubber internal thread
Specification / characteristics - UMGGW 22x6 [M4] GW / N38 - magnetic holder rubber internal thread
| properties | values |
|---|---|
| Cat. no. | 160304 |
| GTIN/EAN | 5906301813620 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 22 mm [±1 mm] |
| Height | 6 mm [±1 mm] |
| Weight | 12 g |
| Load capacity ~ ? | 5.10 kg / 50.01 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 |
Chemical composition
| 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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Advantages as well as disadvantages of Nd2Fe14B magnets.
Advantages
- They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (according to literature),
- Magnets perfectly defend themselves against demagnetization caused by ambient magnetic noise,
- Thanks to the shimmering finish, the surface of nickel, gold, or silver-plated gives an modern appearance,
- They feature high magnetic induction at the operating surface, which increases their power,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
- Possibility of individual creating as well as optimizing to individual needs,
- Wide application in innovative solutions – they are utilized in HDD drives, brushless drives, precision medical tools, as well as industrial machines.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Weaknesses
- At very strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
- Neodymium magnets decrease their power 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 durability even at temperatures up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
- We recommend cover - magnetic mechanism, due to difficulties in producing threads inside the magnet and complex shapes.
- Possible danger resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the context of child safety. Furthermore, small components of these devices are able to disrupt the diagnostic process medical in case of swallowing.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities
Lifting parameters
Detachment force of the magnet in optimal conditions – what it depends on?
- using a sheet made of low-carbon steel, serving as a magnetic yoke
- with a thickness no less than 10 mm
- with an polished contact surface
- with total lack of distance (no coatings)
- for force acting at a right angle (pull-off, not shear)
- in neutral thermal conditions
What influences lifting capacity in practice
- Space between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
- Load vector – maximum parameter is obtained only during perpendicular pulling. The shear force of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
- Base massiveness – too thin plate does not accept the full field, causing part of the power to be escaped to the other side.
- Steel type – low-carbon steel attracts best. Higher carbon content decrease magnetic permeability and holding force.
- Surface quality – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Unevenness creates an air distance.
- Temperature – heating the magnet causes a temporary drop of force. It is worth remembering the thermal limit for a given model.
Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, in contrast under shearing force the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.
Precautions when working with NdFeB magnets
Allergic reactions
Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If redness happens, cease handling magnets and use protective gear.
Serious injuries
Pinching hazard: The pulling power is so immense that it can result in blood blisters, crushing, and even bone fractures. Protective gloves are recommended.
Power loss in heat
Do not overheat. NdFeB magnets are susceptible to temperature. If you require operation above 80°C, ask us about HT versions (H, SH, UH).
Dust is flammable
Combustion risk: Rare earth powder is explosive. Avoid machining magnets without safety gear as this may cause fire.
Compass and GPS
Navigation devices and smartphones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.
Caution required
Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.
Medical interference
Patients with a heart stimulator have to maintain an large gap from magnets. The magnetic field can interfere with the operation of the life-saving device.
Magnet fragility
Protect your eyes. Magnets can explode upon violent connection, launching sharp fragments into the air. Wear goggles.
Protect data
Very strong magnetic fields can destroy records on payment cards, HDDs, and storage devices. Maintain a gap of at least 10 cm.
Swallowing risk
Strictly keep magnets out of reach of children. Choking hazard is high, and the consequences of magnets connecting inside the body are fatal.
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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