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UMGGW 43x6 [M4] GW / N38 - magnetic holder rubber internal thread
magnetic holder rubber internal thread
Catalog no 160307
GTIN/EAN: 5906301813651
Diameter Ø
43 mm [±1 mm]
Height
6 mm [±1 mm]
Weight
29 g
Load capacity
8.70 kg / 85.32 N
10.46 ZŁ with VAT / pcs + price for transport
8.50 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical data - UMGGW 43x6 [M4] GW / N38 - magnetic holder rubber internal thread
Specification / characteristics - UMGGW 43x6 [M4] GW / N38 - magnetic holder rubber internal thread
| properties | values |
|---|---|
| Cat. no. | 160307 |
| GTIN/EAN | 5906301813651 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 43 mm [±1 mm] |
| Height | 6 mm [±1 mm] |
| Weight | 29 g |
| Load capacity ~ ? | 8.70 kg / 85.32 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 |
Other deals
Advantages and disadvantages of rare earth magnets.
Benefits
- They have constant strength, and over more than 10 years their attraction force decreases symbolically – ~1% (according to theory),
- Magnets very well defend themselves against loss of magnetization caused by external fields,
- The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- Magnetic induction on the top side of the magnet is impressive,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Thanks to freedom in shaping and the capacity to adapt to client solutions,
- Key role in modern technologies – they find application in hard drives, drive modules, precision medical tools, as well as complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which makes them useful in miniature devices
Weaknesses
- At strong impacts they can crack, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
- Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape and 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
- We recommend a housing - magnetic holder, due to difficulties in creating nuts inside the magnet and complicated forms.
- Possible danger resulting from small fragments of magnets pose a threat, in case of ingestion, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these devices can be problematic in diagnostics medical in case of swallowing.
- With mass production the cost of neodymium magnets can be a barrier,
Pull force analysis
Breakaway strength of the magnet in ideal conditions – what it depends on?
- on a plate made of mild steel, effectively closing the magnetic flux
- whose thickness is min. 10 mm
- with an ideally smooth contact surface
- with total lack of distance (no paint)
- for force applied at a right angle (in the magnet axis)
- at room temperature
Lifting capacity in real conditions – factors
- Gap (between the magnet and the metal), because even a microscopic distance (e.g. 0.5 mm) can cause a decrease in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
- Pull-off angle – note that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
- Chemical composition of the base – mild steel attracts best. Alloy admixtures reduce magnetic properties and holding force.
- Plate texture – ground elements ensure maximum contact, which increases force. Rough surfaces weaken the grip.
- Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).
Lifting capacity testing was conducted on a smooth plate of optimal thickness, under a perpendicular pulling force, however under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.
Safe handling of NdFeB magnets
Bone fractures
Watch your fingers. Two powerful magnets will join immediately with a force of massive weight, destroying anything in their path. Be careful!
Danger to pacemakers
Individuals with a pacemaker must maintain an large gap from magnets. The magnetic field can stop the functioning of the implant.
Material brittleness
Neodymium magnets are ceramic materials, which means they are very brittle. Impact of two magnets leads to them cracking into small pieces.
Skin irritation risks
Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If an allergic reaction appears, cease handling magnets and wear gloves.
Magnetic media
Do not bring magnets near a purse, computer, or TV. The magnetic field can permanently damage these devices and wipe information from cards.
Dust is flammable
Powder produced during cutting of magnets is combustible. Avoid drilling into magnets unless you are an expert.
Phone sensors
GPS units and mobile phones are highly susceptible to magnetism. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.
Heat sensitivity
Avoid heat. Neodymium magnets are sensitive to temperature. If you require resistance above 80°C, ask us about special high-temperature series (H, SH, UH).
Safe operation
Before use, check safety instructions. Sudden snapping can break the magnet or hurt your hand. Think ahead.
Danger to the youngest
NdFeB magnets are not intended for children. Accidental ingestion of multiple magnets can lead to them attracting across intestines, which poses a critical condition and requires urgent medical intervention.
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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