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UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread
magnetic holder internal thread
Catalog no 180320
GTIN/EAN: 5906301813767
Diameter Ø
42 mm [±1 mm]
Height
20 mm [±1 mm]
Height
9 mm [±1 mm]
Weight
78 g
Load capacity
66.00 kg / 647.24 N
33.95 ZŁ with VAT / pcs + price for transport
27.60 ZŁ net + 23% VAT / pcs
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Technical - UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread
Specification / characteristics - UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread
| properties | values |
|---|---|
| Cat. no. | 180320 |
| GTIN/EAN | 5906301813767 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 42 mm [±1 mm] |
| Height | 20 mm [±1 mm] |
| Height | 9 mm [±1 mm] |
| Weight | 78 g |
| Load capacity ~ ? | 66.00 kg / 647.24 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 |
Other offers
Advantages and disadvantages of Nd2Fe14B magnets.
Advantages
- They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (according to literature),
- They feature excellent resistance to magnetic field loss as a result of external magnetic sources,
- A magnet with a metallic nickel surface has better aesthetics,
- Neodymium magnets ensure maximum magnetic induction on a their surface, which increases force concentration,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
- Possibility of exact forming and adapting to specific needs,
- Wide application in high-tech industry – they are used in data components, motor assemblies, advanced medical instruments, as well as multitasking production systems.
- Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,
Limitations
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a special holder, which not only protects them against impacts but also raises their durability
- We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
- Limited ability of producing nuts in the magnet and complicated shapes - recommended is casing - mounting mechanism.
- Possible danger resulting from small fragments of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, tiny parts of these products are able to be problematic in diagnostics medical in case of swallowing.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Lifting parameters
Maximum holding power of the magnet – what affects it?
- with the application of a yoke made of special test steel, guaranteeing maximum field concentration
- possessing a thickness of minimum 10 mm to ensure full flux closure
- with an ideally smooth touching surface
- with zero gap (no coatings)
- during pulling in a direction perpendicular to the mounting surface
- at conditions approx. 20°C
Lifting capacity in practice – influencing factors
- Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
- Direction of force – highest force is reached only during pulling at a 90° angle. The force required to slide of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Material type – ideal substrate is high-permeability steel. Stainless steels may generate lower lifting capacity.
- Surface condition – ground elements ensure maximum contact, which improves force. Rough surfaces reduce efficiency.
- Operating temperature – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).
Lifting capacity was measured using a polished steel plate of optimal thickness (min. 20 mm), under vertically applied force, however under parallel forces the holding force is lower. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.
Safety rules for work with neodymium magnets
Shattering risk
Neodymium magnets are ceramic materials, which means they are very brittle. Clashing of two magnets leads to them shattering into shards.
Phone sensors
Remember: rare earth magnets generate a field that confuses sensitive sensors. Keep a safe distance from your mobile, tablet, and navigation systems.
Bodily injuries
Pinching hazard: The pulling power is so great that it can cause hematomas, crushing, and broken bones. Use thick gloves.
Fire risk
Drilling and cutting of neodymium magnets poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.
Danger to the youngest
Always store magnets away from children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are tragic.
Safe distance
Avoid bringing magnets near a wallet, computer, or TV. The magnetism can destroy these devices and wipe information from cards.
Respect the power
Exercise caution. Neodymium magnets attract from a long distance and snap with huge force, often faster than you can move away.
Allergy Warning
Nickel alert: The Ni-Cu-Ni coating contains nickel. If skin irritation occurs, immediately stop handling magnets and use protective gear.
Health Danger
Individuals with a pacemaker have to maintain an absolute distance from magnets. The magnetism can stop the operation of the implant.
Do not overheat magnets
Standard neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. Damage is permanent.
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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